CN103430686A - Low-emission gasoline grass trimmer - Google Patents

Abstract

The invention provides a low-emission gasoline grass trimmer. According to the improved low-emission gasoline grass trimmer, two narrowed auxiliary vent holes which are used for a left box seat and a right box seat respectively, an air scavenging channel opening wedge turbulence returning piece and two auxiliary skirts of a piston are used in cooperation with one another. A spraying nozzle (70a) with four branches is arranged on a carburetor of the low-emission gasoline grass trimmer so that atomization can be facilitated and the unexpected emission reduction and standard reaching effect can be achieved. A grass trimming head (54) with a grass cutting and trimming steel wire rope (54b) is arranged on a cutter, a nylon wire is replaced by the steel wire rope, and therefore the long-lasting cutting is facilitated. An outer protective cover (73) which is arranged on an inner protective cover (60) is arranged on the cutter, a long grass pressing wheel (74) with the roller length equal to the grass trimming diameter is arranged on the outer protective cover of the cutter, and therefore grass pressing, soil moisture conservation and grass pattern forming are facilitated. A cutter disc (64) with internal saw teeth (642) is arranged in the cutter, outer cutting edges (641) of the peripheries of four extending knives are respectively provided with a plurality of outer sawing teeth (64a), and the number of the internal saw teeth (642) is also four, the internal saw teeth (642) are respectively provided with a plurality of teeth, and therefore the condition that the grass is too hard to cut is avoided. The quality and the usability of the low-emission gasoline grass trimmer are improved.

Description

Low emission gasoline mower

Technical field

The invention provides and a kind ofly for places such as flower bed, garden, park and road sides, cut off shrub, the mower of flowers and trees shaping and mower, belong to machine field, gardens.By the innovative approach by indirectly discharging after the catalase hush tube of a meter five, for enlarging purposes, install band additional and cut the moving head of piling up neatly the wire of beating the grass and disc cutterbar and the carburetor four bifurcated nozzles of being with inside and outside sawtooth on brush saw, and be convenient to press grass to preserve soil moisture and the long grass pressing wheel of meadow decorative pattern, to form the low emission gasoline brush cutter.There is the combustion chamber of function wave to reach and the collocation that the internal combustion engine ignition device of active receiving electrode and fine motion discharge electrode is arranged, have and reduce hydrocarbon emission in Jia Shuanfu shirt rim, piston skirt, and logarithmic differentiation isogonal line shirt rim, piston skirt turbulent flow returns to alter and falls row, there is the two auxiliary blow vent that narrows the left and right block to reduce the several different methods of discharge, managing the engine of low emission, is inventor's crystallization that lifetime, domestic and foreign experience was groped; The technical field that belongs to internal combustion engine and energy-saving and emission-reduction.Known two rush petrol engine discharges difficult up to standard, existing beyond thought emission reduction effect can be up to standard, it has been determined and has started batch in two application of rushing gasoline engine scavenging road junction and has produced, the developing direction that is indicating 20 years from now on low emission gasoline two impact machines and brush saw and mower, started the new technical field of mower.

Background technology

Mower is widely used in the place such as flower bed, garden, park and road side and cuts the grass on a lawn, tending [after young plantation, and tea place is upgraded, and the herbage harvesting, return crop stocks to the field, and flowers and trees shapings etc. cut off the operation of shrub branch; To carry out brush by the selected mode of people's hobby.Some operation pedestrian likes and while be accustomed to use brush saw, in the local time of particularly running into corner, uses and press energetically mobile jib, does to such an extent that mobile jib is often determined not live and trace waves in location.Operation pedestrian's height difference, and the difference of being accustomed to taking operating angle, need the mobile jib adjustable length, and the round type linkage of original location mobile jib leaves and easily causes the shortcoming that the mobile jib trace rocks.Low vibratility and the low noise of low vibration lawn mower, can have certain curative effect if consider at the foamed plastics of stock plus-minus vibration; And vibration and the very large root of noise be not only in precision and the form and position tolerance of power and instrument, and be mechanism, catalyst, hush tube, vibration-damped handle, cutter coordinates with the harmony of engine, and low vibration and the low emission of pursuing mower are in fact hard nut to cracks of leaving over for a long time.Adopt two stroke engine can improve power per liter more than 50% with respect to four-stroke engine, but be really difficult up to standard in discharge, this is a part of problem of the present invention; Mower is portable dam, wishes that power is gently little; Two-stroke or four-stroke gasoline engine are all wanted igniter, and the engine spark plug is widely used in the high voltage pulse electric current is introduced into to combustion chamber, and make the gaseous mixture sparking of inspiration cylinder and light, and then diffusion combustion break out work done.The outside coupling of existing spark plug and having between the spark cap of rubber jar, have the loose loose phenomenon of pine sometimes.The inside of existing spark plug, make resistance though be provided with glass-sealing agent, and impedance is only arranged; If the induction reactance of adding and capacitive reactance, form suitable RCL loop, have the effect that more preferably suppresses radio interference.Multiple tracks umbrella rib on insulator also can be improved to saw-tooth shaped cross section by semi-circular cross-section, so that the creepage passage of more insulation reaches, better blocks rubber jar.The heat radiation of the metal shell of existing spark plug also can further improve.The electrode of existing spark plug, well imagine, have easily coking, easily ablation, single-point arcing, the shortcoming of low temperature difficult point; If be the electrode innovation movable, when improvement is arranged.Moreover original combustion chamber has multiple, but do not have out of this world; Except crossing advantage, weak point is arranged; Wedge-section combustion chamber for example, its gaseous mixture undue concentration is at the spark plug place, and it is rough that operating mode seems; Bathtub shaped combustion chamber and for example, the shape of its prolate, make the effect of squish poor, and flame travel is also longer, and burn rate is lower, and burning time is long, and rate of explosion is low, and surface to volume ratio F/V is larger, and to HC, discharge is disadvantageous.Bowl-in-piston chamber and for example, ，Peng Xing combustion chamber, hemispherical combustion chamber, and other type combustion chambers, as the auxiliary combustion chamber of turbulization, the dual ignition plug combustion chamber, the combustion chamber on plane, each has something to recommend him; But the invention that the mankind aspire after perfection is endless, piston also has very large potentiality to dig.The so-called best geometry of combustion chamber and piston is no doubt important, but will reach and the igniter collocation with engine model is adaptive, and preferably effect is just arranged.Particularly two-stroke gasoline engine is poorer than the fuel economy of four-stroke gasoline engine, and the hydrocarbon emission in tail gas often exceeds standard.Combustion chambers of internal combustion engines and piston reach the collocation with igniter, are hard nut to cracks that relates to energy-saving and emission-reduction.If exert oneself less by four-stroke engine; If with booster, volume is large; If with the diesel engine easy dirty dirty person; The waste gas that is run in and put by the engine direct near the people is hovered around engine, and the part waste gas launched machine air filter of meeting and carburetor air mouth suck, and part waste gas can be sucked by the people.Brush saw can only brush and can not be beaten the grass; But if install just dual-use of moving head additional at the cutter head; The meadow of just having beaten, some grass has and is pulled out loose phenomenon, if use grass pressing wheel, the effect of pressing the grass soil moisture conservation and extruding the meadow decorative pattern is not only arranged, and make smooth operation and laborsaving; The bush knife of common flat sword, due to the effect of the sliding cutting effect more than impact cutting, encountering hard branch bar just has the cutter relieving phenomenon sometimes, if just can improve with the cutter of band portion sawtooth; It is long to cut buttress wire life-span of beating the grass; If can further optimize admission with the improvement of carburetor four bifurcated nozzles; And known two rush petrol engine discharge difficult up to standard after, if petrol engine is rushed in the low emission two that is used in Jia Shuanfu shirt rim, piston skirt and alters sheet at the scavenging road junction with wedge turbulent flow time, when can further improveing, make brush saw and mower up to standard.

Summary of the invention

In order to make up the shortcoming due to the existing mechanism of mower, make mobile jib location micro-waving reliably and not, low vibratility and the low noise of brush saw are improved, improve and exert oneself and cutting effect, reduced exhaust, the inventor has done the improvement of many brush saw mowers, with containing the single-cylinder air-cooled petrol engine of the small two-stroke that improves many scavenging ports, as E134F, former stock changes the hush tube of many honeycombs and catalyst into, transparent protective cover is arranged, the bush knife that periphery blade and interior all blades are arranged, the loosening stock interface that is difficult for that limit flange and lateral filament button are arranged, spiral spring or wave spring are arranged and the handgrip of vibration damping, the carburetor that inside spin whirlpool nozzle is arranged, form novel have catalase hush tube and swirl sprayer and two and rush the brush saw of many scavenging ports gasoline engine, it is a kind of low emission gasoline brush cutter.Brush saw can only brush and can not be beaten the grass; But if install just dual-use of moving head additional at the cutter head; The meadow of just having beaten, some grass has and is pulled out loose phenomenon, if use grass pressing wheel, the effect of pressing the grass soil moisture conservation and extruding the meadow decorative pattern is not only arranged, and make smooth operation and laborsaving; The bush knife of common flat sword, due to the effect of the sliding cutting effect more than impact cutting, encountering hard branch bar just has the cutter relieving phenomenon sometimes, if just can improve with the cutter of band portion sawtooth; It is long to cut buttress wire life-span of beating the grass; If can further optimize admission with the improvement of carburetor four bifurcated nozzles; And known two to rush petrol engine discharge difficult up to standard, petrol engine is rushed in the low emission two of finding to be used in Jia Shuanfu shirt rim, piston skirt and altering sheet at the scavenging road junction with wedge turbulent flow time, when can further improveing, makes brush saw and mower up to standard.Therefore for enlarging purposes, on low emission gasoline brush cutter basis, install moving head additional, grass pressing wheel, the band serrated knife, cut and pile up neatly the wire of beating the grass, and the improvement of carburetor four bifurcated nozzles, forms the low emission gasoline brush cutter.The engine of low emission, be the combustion chamber that function wave is arranged of the improvement of internal combustion engine and with the basis of the collocation of the internal combustion engine ignition device that active receiving electrode and fine motion discharge electrode are arranged on, and in Jia Shuanfu shirt rim, piston skirt, reduce on the petrolic basis of hydrocarbon emission, and return and alter on the petrol engine basis that falls row at logarithmic differentiation isogonal line shirt rim, improved piston skirt turbulent flow, the further improved two auxiliary blow vent that narrows the left and right block reduces two of discharge and rushes petrol engine, belongs to the combustion chamber of internal combustion engine and the technical field of turbulent scavenging.In Jia Shuanfu shirt rim, piston skirt with return the low emission two of altering sheet at the scavenging road junction with wedge turbulent flow and rush petrol engine, be to collect the crystallization that domestic and foreign experience is groped for many years; Its usefulness is to have obtained beyond thought reduction of discharging effect up to standard, and the brush mower is dual-purpose.

Silkworm in spring to dead silk not to the utmost, is improved invention and has no limits; Wear out iron shoes on a rare occasion to obtain, clino-diagonal is warded off in energy-saving and emission-reduction.Everybody knows that two impact machine discharges often exceed standard, but nobody can thoroughly solve; Described scavenging road junction wedge turbulent flow returns alters sheet, is to add small pieces at the scavenging road junction of two qi of chong channel ascending adversely cylinders, seems simple, and but nobody can find out; Be who the unexpected small pieces that will go to burn-on at the place, scavenging road junction of cylinder refill up and start the engine and contact with high speed piston because that can not think meaning, mess things up, even expected also dare not doing, what that may damage, compensation! This is invention just not but the sudden caprice of often having an examination in arms just has amazing effect, and what is this? this is after travelling far and wide in search of it, and thousand consider and even have one, is again the crystallization of groping for many years with domestic and foreign experience, beyond thought reduction of discharging effect up to standard.Moreover the carburetor of engine has the potential to be tapped very much, establish four bifurcated nozzles and refer to that establishing 4 gaps week along ring on the outlet of the nozzle of the inside of carburetor is four bifurcated nozzles, mix combustion vapour and be beneficial to atomization through the fluid state in gap therefore improved.Although it is very complicated that spark ignition process and two is rushed detailed physical and chemical processes, the mankind still have many aspects not clear so far, but we perhaps can tentatively think, this scavenging road junction wedge turbulent flow returns alters sheet, at the scavenging road junction, place produces turbulent flow with wedge, the rear waste gas that burns is returned to the possibility that channels to gas handling system retardation is arranged, its doubtful turbulent flow that belongs to is taken a breath, known cross flow scavenging for two-stroke internal combustion engine, three kinds of ventilation schemes of loop scavenging and uniflow scavenging, opened up an approach of sheet of altering with wedge turbulent flow time at the scavenging road junction that can reduce discharging, clino-diagonal referred to as turbulent scavenging, or the shortcut of low emission.Although the mechanism of its atom level remains to be explored future, it has been determined and has started batch product in two application of rushing gasoline engine scavenging road junction, having represented the developing direction of 20 years low emission gasoline brush cutters from now on.Cut the buttress wire of beating the grass durable more than nylon wire, not only be beneficial to long-acting cutting, few with line, save into the dish nylon wire; And can beat the grass, can also cut straw, and nylon wire cuts motionless thin bar; While cutting different object, beat the grass wire and disc cutterbar complement each other each has something to recommend him.Its roller length of long grass pressing wheel diameter that equals to beat the grass just in time can be pressed onto the grass just cut, in order to press careless successful.With the grass pressing wheel of thin length, so that press the grass soil moisture conservation, material-saving, roll that to cover face high, and meadow embossing is attractive in appearance.

The present invention solves technical scheme and the method that its technical problem takes:

A kind of low emission gasoline grass-mowing machine, containing the single-cylinder air-cooled petrol engine of small two-stroke, stock, cutter, manipulating handgrip assembly, described stock is provided with aluminum pipe, described aluminum pipe inside is provided with cavity, be provided with power transmission shaft in the cavity of described aluminum pipe, its upper end of described aluminum pipe and power transmission shaft is equiped with described engine, and its lower end of described aluminum pipe and power transmission shaft is equiped with described cutter, and the middle part of described aluminum pipe is equiped with described handgrip; Described low emission gasoline brush cutter its containing engine 1E34-48 (1), hexagon socket cap head screw M6x30 (2), hexagon socket cap head screw M5x8 (3), 31 type hex nut M6 (4), PP wire clamp (5), PA suspension ring (6), 41 type non-metallic insert hexagonal locking nut M5 (7), POM suspension ring holder (8), hexagon socket cap head screw M5x20 (9), the front aluminum pipe 750x that connects

26x1.5 (10), manipulating handgrip assembly (11), control handle pipe (12), 13 band bullet pad hexagon socket cap head screw M5x25 (13), handgrip holder train wheel bridge (14), handgrip holder (15), left hand handle component (16), acrylonitrile-butadiene rubber handgrip shock-absorbing sleeve (17), handgrip holder lower plate (18), left handle pipe (19), five leaf nylon tubes

8.3x1460 (20), power transmission shaft

8x1531 (21), deep groove ball bearing (22), bullet pad 6 (23), hexagon socket cap head screw M6x23 (24), aluminium tube joint (25), locking knob (26), shaft adapter (27),Rear aluminum pipe 740x

26x1.5 (28), 4 hexagon socket cap head screw M5x12 (29), 4 spring washers 5 (30), spacing handle spring (31), spacing handle lock (32), spacing handle (33), split washer 2.5 (34), protective cover holder (35), circlip for hole 26 (36), circlip for shaft 10 (37), small arc-shaped gear (38), the small arc-shaped gear oil blocks up (39), hexagon socket cap head screw M6x14 (40), hexagon socket cap head screw M6x10 (41), plain washer 6 (42), gear-box (43), orthodrome gear (44), splined shaft (45), deep groove ball bearing 6002 (46), circlip for hole 32 (47), gear-box guard shield (48), spline pad (49), 3 tooth disc cutterbars (50), cutterhead pressing plate (51), cutterhead guard shield (52), 1 type hex nut M10 left-handed (53), nylon moving head (54), braces (55), hexagon nut with flange M5 (56), small blade (57), knife rest (58), cross recessed pan head tapping screw ST4x14 (59), protective cover A (60), shielding support (61), hexagon socket cap head screw M5x35 (62), 2 tooth disc cutterbars (63), 4 tooth disc cutterbars (64), 8 tooth disc cutterbars (65), left hand is (16-1), 1 type hex-head nut M5 (16-2), Cross Recess Head Screw M5x20 (16-3), Cross Recess Head Screw M5x30 (16-4), the waistband (66) that pallet (67) are arranged, the auxiliary ball (68) that turns, catalase hush tube (69), described engine, or with little to 1E32F, or with greatly to 1E48F, it comprises starter assembly (F1), start driver plate assembly (F2), 2 oil sealings (F3), right case (F4), 2 deep groove ball bearings (F5), hexagonal cylindrical head plain cushion screw assemblies M5 in 2 moment of torsion 7-9NM * 45 (F6), the muffler ASSY (F7) of catalase hush tube (69), silencer pad (F8), the right shock-reducing sleeve of fuel tank (F9), 2 retaining ring for piston pins (F10), piston pin (F11), needle bearing (F12), piston (F13), piston ring (F14), crank assemblby (F15), woodruff key (F16), cylinder block pad (F17), cylinder block (g44), 2 interior hexagonal cylindrical head screw assemblies M5 * 20 (F19), engine outer cover (F20), recessed pan head tapping screw ST5 * 14 (F21), igniter assembly (F22),2 cross fluting screw assemblies M4 * 20 (F23), spark plug (F24), without asbestos packing sheet mould assembling pad (F25), 2 mould assembling alignment pins (F26), left box body (F27), 5 cross fluting screw assemblies M5 * 25 (F28), magnetic flywheel (F29), clutch assembly (F30), clutch disk (F31), circlip for shaft (F32), the left shock-absorbing sleeve L of fuel tank (F33), the right shock-absorbing sleeve R of fuel tank (F34), inserts bearing connection seat (F35), 3 cross fluting screw assemblies M5 * 20 (F36), train wheel bridge shock-absorbing sleeve (F37), lower plate shock-absorbing sleeve (F38), train wheel bridge (F39), lower plate (F40), 2 interior hexagonal cylindrical head screw assemblies M5 * 18 (F41), flame-out wire clamp (F42), air filter seat (F43), 2 air filter seat pad covers (F44), soft polyurethane foam filter core (F45), air filter pressing plate (F46), 2 M5 bullet pads (F47), 2 cross fluting coiled hair bullet screw M5 * 63 (F48), air filter lid (F49), cross fluting coiled hair screw assemblies M5 * 14 (F50), 2 air inlet pipe pads (F51), deflector (F52), polyphenylene sulfide PPS air inlet pipe (F53), grounding wire component (F54), without asbestos packing sheet carburetor packing (F55), carburetor assembly (F56), PU yellow transparent oil return pipe (F57), PU black oil inlet pipe (F58), oil resistant butadiene-acrylonitrile rubber oil base (F59), fuel filter assembly (F60), oil pipe clip (F61), HDPE blowing fuel tank (F62), cap assembly of fuel tank (F63), 5-7NM hexagon-headed bolt plain cushion combination M6X14 (F64), 4 3-5NM cross fluting screw assemblies M5X18 (F65), its engine 1E34-48 (1) comprised of described gasoline brush cutter, by described hexagon socket cap head screw M6x30 (2), hexagon socket cap head screw M5x8 (3), and 31 type hex nut M6 (4), with described before connect aluminum pipe (10) and be connected, connect the outside of the pipe of aluminum pipe (10) before described, by described PP wire clamp (5), PA suspension ring (6), 41 type non-metallic insert hexagonal locking nut M5 (7), POM suspension ring holder (8), hexagon socket cap head screw M5x20 (9) and form the braces part with braces (55), in order to braces is worn on single shoulder, the aluminum pipe 750x connect before described

26x1.5 (10) upper, be equiped with manipulating handgrip assembly (11), be by control handle pipe (12),Many bands bullet pad hexagon socket cap head screw M5x25 (13), handgrip holder train wheel bridges (14), handgrip holder (15), left hand handle component (16), acrylonitrile-butadiene rubber handgrip shock-absorbing sleeve (17), handgrip holder lower plate (18), the common composition of left handle pipe (19) institute; Connect the inside of the pipe of aluminum pipe (10) before described, be equiped with described five leaf nylon tubes

8.3x1460 (20), power transmission shaft

8x1531 (21), and deep groove ball bearing (22) so that transmission; Before described, connect aluminum pipe (10) by described bullet pad 6 (23), hexagon socket cap head screw M6x23 (24), aluminium tube joint (25), locking knob (26), shaft adapter (27), with described rear aluminum pipe 740x 26x1.5 (28) connect, and form spacing Handleset by 4 hexagon socket cap head screw M5x12 (29), 4 spring washers 5 (30), spacing handle spring (31), spacing handle lock (32), spacing handle (33), split washers 2.5 (34); end at described rear aluminum pipe (28), be equiped with described protective cover holder (35), circlip for hole 26 (36), circlip for shaft 10 (37), small arc-shaped gear (38), the small arc-shaped gear oil blocks up (39), and many band bullet pad hexagon socket cap head screw M5x25 (13), hexagon socket cap head screw M6x14 (40), hexagon socket cap head screw M6x10 (41), plain washer 6 (42), and gear-box (43), orthodrome gear (44), splined shaft (45), deep groove ball bearing 6002 (46), circlip for hole 32 (47), gear-box guard shield (48),Spline pad (49), 3 tooth disc cutterbars (50), cutterhead pressing plate (51), cutterhead guard shield (52); Described cutter contains protective cover and moving head and disc cutterbar in order to select; The dress cutterhead will be with described 1 type hex nut M10 left-handed (53); Or dress nylon moving head (54) is to replace disc cutterbar, and the cut-out described small blade (57) that line uses of beating the grass, be contained in described protective cover (60) by hexagon nut with flange M5 (56), knife rest (58), cross recessed pan head tapping screw ST4x14 (59) upper, and shielding support (61) and hexagon socket cap head screw M5x35 (62) will be installed; Cutterhead has multiselect, or 2 tooth disc cutterbars (63), or the disc cutterbar of 4 teeth (64), or 8 tooth disc cutterbars (65), so that the shrub of different cultivars is cut in choosing; Described left hand handle component (16), by left hand, (16-1), 1 type hex-head nut M5 (16-2), Cross Recess Head Screw M5x20 (16-3), Cross Recess Head Screw M5x30 (16-4) are formed, be arranged on left handle pipe (19); And the waistband (66) of pallet (67) is arranged, and can tie up to people's waist, pallet (67) and auxiliary ball (68) movable contact that turns, auxiliaryly turn ball (68) and be connected with engine outer cover (F20), in order to further lengthen cut coverage; Described catalase hush tube (69), the gas outlet of connection muffler ASSY (F7), so that waste gas is discharged near cutter through aluminum pipe; Described engine, or use 1E30, or greatly to 48 cylinder diameter; Engine start partly comprises starter assembly (F1), starts driver plate assembly (F2), is furnished with 2 oil sealings (F3) and 2 deep groove ball bearings (F5), in order to be contained in rotationally on the described right case (F4) of engine; By hexagonal cylindrical head plain cushion screw assemblies M5 * 45 (F6) in 2 moment of torsion 7-9NM, the muffler ASSY of catalase hush tube (69) (F7) and silencer pad (F8), be fixed on cylinder block (g44); The right shock-reducing sleeve of fuel tank (F9) is housed on cylinder block (g44); 2 retaining ring for piston pins (F10), piston pin (F11), needle bearing (F12), piston (F13), piston ring (F14) and crank assemblby (F15) are housed in cylinder block (g44), establish woodruff key (F16) on bent axle; Cylinder block pad (F17) is mounted on cylinder block (g44); 2 interior hexagonal cylindrical head screw assemblies M5 * 20 (F19) and recessed pan head tapping screw ST5 * 14 (F21) are fixed on engine outer cover (F20) on cylinder block (g44); M4 * 20 (F23) are fixing by 2 cross fluting screw assemblies for igniter assembly (F22); Spark plug (F24) also is contained on cylinder block (g44); On cylinder block (g44), put without asbestos packing sheet mould assembling pad (F25), 2 mould assembling alignment pins (F26), and with the fixing left box body (F27) of 5 crosses fluting screw assemblies M5 * 25 (F28); Magnetic flywheel (F29) is contained on bent axle, and with clutch assembly (F30),Clutch disk (F31) and circlip for shaft (F32) match; The right shock-absorbing sleeve R of the left shock-absorbing sleeve L of fuel tank (F33) and fuel tank (F34) is contained on described outer cover (20); Inserts bearing connection seat (F35) fixes by 3 cross fluting screw assemblies M5 * 20 (F36); Train wheel bridge shock-absorbing sleeve (F37), lower plate shock-absorbing sleeve (F38) and train wheel bridge (F39) lower plate (F40) are housed on described connection seat (F35), also clamp with 2 interior hexagonal cylindrical head screw assemblies M5 * 18 (F41); Flame-out wire clamp (F42) also is housed on described connection seat (F35); Air filter seat (F43), 2 air filter seat pad covers (F44), soft polyurethane foam filter core (F45), air filter pressing plate (F46) form air filter, and are packed on carburetor by 2 M5 bullet pads (F47) and 2 cross fluting coiled hair bullet screw M5 * 63 (F48) air filter lids (F49), cross fluting coiled hair screw assemblies M5 * 14 (F50); 2 air inlet pipe pads (F51), deflector (F52), polyphenylene sulfide PPS air inlet pipe (F53), grounding wire component (F54), without asbestos packing sheet carburetor packing (F55), carburetor assembly (F56), form carburetor; PU yellow transparent oil return pipe (F57), PU black oil inlet pipe (F58), oil resistant butadiene-acrylonitrile rubber oil base (F59), fuel filter assembly (F60), oil pipe clip (F61), HDPE blowing fuel tank (F62), cap assembly of fuel tank (F63) form fuel tank; And 5-7NM hexagon-headed bolt plain cushion combination M6X14 (F64) is fixing described startup driver plate assembly (F2) use, as for 4 3-5NM crosses fluting screw assemblies M5X18 (F65), be the use of fixing described starter assembly (F1); Described have the waistband (66) of pallet (67) to be provided with pallet (67), can place the auxiliary ball (68) that turns on pallet (67), and auxiliary turn ball (68) and be contained in external engine, or directly the brush cutter engine is placed on to the operation that comes up of pallet (67) that waistband (66) is provided with; Pallet (67) and auxiliary ball (68) movable contact that turns, auxiliaryly turn ball (68) and be connected with engine outer cover (F20), in order to further lengthen cut coverage; Described catalase hush tube (69), the one termination is led to the gas outlet of muffler ASSY (F7), and its another termination aluminum pipe so that waste gas is through described aluminum pipe, and is discharged near cutter; Described catalase hush tube (69) is aluminum, waste gas is arranged by order to the aluminium dioxide catalyst effect is arranged; Described muffler ASSY (F7) is aluminum, waste gas is arranged by order to the aluminium dioxide catalyst effect is arranged; Connect aluminum pipe (10) and rear aluminum pipe (28) before described or separate, or an aluminum pipe, waste gas being arranged by order to the aluminium dioxide catalyst effect is arranged; Five leaf nylon tubes in described aluminum pipe are established the foam honeycomb body, and add the catalase catalyst at the foam honeycomb body, so as to have waste gas by the time catalyst multiple catalyzing effect arranged; Described 2 tooth disc cutterbars (63),4 tooth disc cutterbars (64), 8 tooth disc cutterbars (65), for selecting, are commonly referred to as the disc cutterbar of cutter, and it is provided with a plurality of outer cutting edges (641) in the cutterhead periphery, so that the few cutter relieving of brush; Described 2 tooth disc cutterbars (63), 4 tooth disc cutterbars (64), 8 tooth disc cutterbars (65) are for selecting, and it is provided with a plurality of inner cutter holes (642) in the cutterhead periphery, so that card branch in brush not; In described carburetor assembly (F56), improve the interior straight tube (70) of atomizer for the vortex spray bar of helicla flute (71) is arranged, be beneficial to disperse mixed effect; In described carburetor assembly (F56), the import of vortex spray bar that improves the interior straight tube (70) of atomizer or helicla flute (71) arranged is for there being parabolical horn mouth (72), or conical section is beneficial to polymerization contaminated product effect as the horn mouth of archimedes curve; Upper in described left handle pipe (19), (19b) taken in the damping that is provided with close circle helical spring shape, so that further damping; Employing has protective cover transparent or partially transparent (60), in order to convenient observation brush operation; The single-cylinder air-cooled petrol engine of small two-stroke that this brush cutter adopts, little of 1E32, greatly to 1E47.5, multiplex 1E34F or 1E39F; The engine that belongs to low emission, be the combustion chamber that function wave is arranged of the improvement of internal combustion engine and with the basis of the collocation of the internal combustion engine ignition device that active receiving electrode and fine motion discharge electrode are arranged on, and in Jia Shuanfu shirt rim, piston skirt, reduce on the petrolic basis of hydrocarbon emission, and return and alter on the petrol engine basis that falls row at logarithmic differentiation isogonal line shirt rim, improved piston skirt turbulent flow, the further improved two auxiliary blow vent that narrows the left and right block reduces two of discharge and rushes petrol engine; In Jia Shuanfu shirt rim, piston skirt, unexpectedly have and reduce discharging effect up to standard; Logarithmic differentiation isogonal line shirt rim, piston skirt turbulent flow returns and alters the petrol engine that falls row is to be equipped with two auxiliary shirt rims (g37) in the skirt section of piston (g37); Described two auxiliary shirt rim (g37) is on the basis of former two shirt rims of the bilateral that there is not the connecting rod pin-and-hole of original piston, the bilateral that the connecting rod pin-and-hole is arranged in the skirt section of piston (g31) below, an auxiliary shirt rim is added on every one side, can be described as two auxiliary shirt rims (g37); Described two auxiliary shirt rim, it is containing the through hole (g43) of concave arc limit (g42), piston and two auxiliary shirt rims on base (g38), lower fillet (g39), side (g40), upper fillet (g41), base, piston skirt is located at shirt rim with isogonal a section of logarithmic differentiation equation, it is conducive to auxiliary guiding, additional turbulence is returned and is altered and fall row, and lubrication assistant and heat radiation; Described two auxiliary shirt rim or use aluminium alloy, or with composite in order to reduce cylinder prepareding gap; Each auxiliary shirt rim and described former two shirt rims of described two auxiliary shirt rims (g37) are all the cylindrical prolongations along outside piston week, and its projection is thrown on the face vertical with the piston movement direction along the outside piston week quartering; It is longer that each auxiliary shirt rim of described two auxiliary shirt rims (g37) extends along the cylinder in outside piston week than described former two shirt rims, that is to say,The base of two auxiliary shirt rims (g38) is more farther apart from the connecting rod pin-and-hole on the direction of the cylinder extended line along piston than the base of former two shirt rims, two auxiliary shirt rims are higher, piston and skirt section are longer, and its effect is to be conducive to the guiding length of lengthened piston and auxiliary guiding, the both sides of described two auxiliary shirt rims (g37) are provided with the side (g40) of two auxiliary shirt rims, and it connects the base (g38) of piston (g31) and two auxiliary shirt rims, the both sides of described two auxiliary shirt rims (g37), be provided with the side (g40) of two auxiliary shirt rims on the base (g38) that connects piston (g31) and pair auxiliary shirt rims, and the angle of the side of its both sides (g40) is greater than 100 degree, the both sides of described two auxiliary shirt rims (g37) are provided with the side (g40) of two auxiliary shirt rims, and it is that upper fillet (g41) by the side of two auxiliary shirt rims connects piston (g31), the both sides of described two auxiliary shirt rims (g37) are provided with the side (g40) of two auxiliary shirt rims, and it is lower fillet (g39) by the side of the two auxiliary shirt rims base (g38) that connects two auxiliary shirt rims, establish concave arc limit (g42) on the base of described two auxiliary shirt rims (g37), described concave arc limit (g42) or circular arc, or involute, or parabola, or other functions, fall row in order to assisting, establish through hole (g43) on described two auxiliary shirt rim (g37), or pit, in order to lubrication assistant and heat radiation, the upper piston that reaches in described two auxiliary shirt rim (g37) is provided with a plurality of through holes (g43), and it slightly is del arranges, and many rows are arranged, and the most descending through hole is few, and the Kong Yue that more up works is many, in order to lubrication assistant and heat radiation, cylinder body (g44) is two to rush the petrolic respectively cylinder body (g44) at one scavenging road junction (g45) of left and right that contains along Central Symmetry ground on the cylinder chamber of dress piston, on each scavenging road junction (g45) of one, the left and right of the symmetry of described cylinder body (g44), respectively each ground, left and right is provided with wedge turbulent flow time and alters sheet (g46) symmetrically, utilize the equal feature of logatithmic spiral tool pressure angle of higher mathematics, make described a section of having by the logatithmic spiral of logarithmic differentiation equation, the mixed air-flow gushed thereon is just easily steady, block waste gas and return and alter in order to reduce discharge in order to utilize equal pressure angle to produce turbulent flow at scavenging road junction place, described wedge turbulent flow returns alters the side of outlet of the scavenging air belt of pressing close to piston that closes on lower dead center of bottom of below that sheet (g46) is located at the scavenging road junction (g45) of cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters sheet (g46) and comprises the wedge turbulent flow and go back to the scavenging road junction (g47) of altering sheet, wedge (g48), wedge turbulent flow that the wedge turbulent flow goes back to the logical scavenging road junction of altering sheet and return returning of the logical scavenging road junction of altering sheet and alter the turbulent shield (g50) that grid (g49), wedge turbulent flow go back to the logical scavenging road junction of altering sheet, all one section of the tool logatithmic spiral, described wedge turbulent flow time is altered sheet (g46) and slightly is inclined wedge-shaped, the large end of described inclined wedge-shaped is connected to side of the outlet of the scavenging air belt of pressing close to piston that closes on lower dead center of the bottom of below at the scavenging road junction (g45) of cylinder body, a section of its tool logatithmic spiral,Described wedge turbulent flow returns alters wedge turbulent flow that sheet (g46) comprises and goes back to the scavenging road junction (g47) of altering sheet and be located at described wedge turbulent flow and go back to the top of altering sheet (g46), that is to say a section of its tool logatithmic spiral of small end that returns the inclined wedge-shaped of altering sheet (g46) at the wedge turbulent flow, described wedge turbulent flow return alter wedge (g48) that described wedge turbulent flow that sheet (g46) comprises goes back to the logical scavenging road junction of altering sheet be located at the wedge turbulent flow return alter the inboard of sheet (g46) and with the bottom connection of the below at the scavenging road junction (g45) of cylinder body, a section of its tool logatithmic spiral of described inboard, described wedge turbulent flow returns alters described wedge turbulent flow that sheet (g46) comprises and returns returning of the logical scavenging road junction of altering sheet and alter grid (g49) and be located at the intersection of a side of outlet that the wedge turbulent flow returns the scavenging air belt at the scavenging road junction (g45) of altering sheet and cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters described wedge turbulent flow that sheet (g46) comprises and returns returning of the logical scavenging road junction of altering sheet and alter grid (g49) and be located at the chamfering place of a side of outlet that the wedge turbulent flow returns the scavenging air belt at the scavenging road junction (g45) of altering sheet and cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters described wedge turbulent flow that sheet (g46) comprises and returns returning of the logical scavenging road junction of altering sheet and alter grid (g49) and be located at the rounding place of a side of outlet that the wedge turbulent flow returns the scavenging air belt at the scavenging road junction (g45) of altering sheet and cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow return alter sheet (g46) above be provided with the turbulent shield (g50) that the wedge turbulent flow goes back to the logical scavenging road junction of altering sheet, the one end returns and alters the sheet chamfering place crossing with a side of the outlet of the scavenging air belt at the scavenging road junction (g45) of cylinder body and be connected with being located at wedge turbulent flow, and its other end and wedge turbulent flow time are altered the top of sheet and be that is to say that the small end of with wedge, altering the inclined wedge-shaped of sheet (g46) for turbulent time is connected, and a section of top its tool logatithmic spiral of described turbulent shield, the two auxiliary blow vent that narrows the left and right block reduces two of discharge and rushes petrol engine, containing left block, right block, piston, and known combustion chamber, spark plug, cylinder body, cylinder cap, cylinder barrel, connecting rod, crankcase, lubricating oil pump, lubricating system, fuel system, ignition system, cooling system, described cylinder body (g44) is two to rush the petrolic respectively cylinder body (44) at one scavenging road junction (g45) of left and right that contains along Central Symmetry ground on the cylinder chamber of dress piston, on each scavenging road junction (g45) of one, the left and right of the symmetry of described cylinder body (g44), respectively each ground, left and right is provided with wedge turbulent flow time and alters sheet (g46) symmetrically, the skirt section of described piston is equipped with two auxiliary shirt rims (g37), described two auxiliary shirt rim (g37) is on the basis of former two shirt rims of the bilateral that there is not the connecting rod pin-and-hole that retains original piston, and the bilateral that the connecting rod pin-and-hole is arranged in the skirt section of piston (g31) below, an auxiliary shirt rim is added on every one side, can be described as two auxiliary shirt rims (g37), the through hole (g43) of concave arc limit (g42), piston and two auxiliary shirt rims on described two ，Qi Han base, auxiliary shirt rim (g38), lower fillet (g39), side (g40), upper fillet (g41), base,Its piston skirt of described piston also claims isogonal one section to be located at shirt rim with the logarithm line of logarithmic differentiation equation, the limit of the part of its shirt rim is a section that pressure angle approaches the equal logatithmic spiral by the logarithmic differentiation equation, utilize the equal feature of logatithmic spiral tool pressure angle of higher mathematics, make sheet there is one section of logatithmic spiral and block waste gas and return and alter in order to reduce discharge in order to utilize equal pressure angle to produce turbulent flow at place, scavenging road junction, described two auxiliary shirt rim or use aluminium alloy, or with composite in order to reduce cylinder prepareding gap, use the CNC machining center, first make the tungsten copper electrode, with the auxiliary molding of the lathe that the three-dimensional rotation head is arranged, then produce in batches with die casting machine, machined and plating again, its left block of described left block and right block and right block respectively are provided with and change the little two auxiliary blow vent narrowed down, described two auxiliary blow vent is located at left block and just is called left two auxiliary blow vent (51b), described two auxiliary blow vent is located at right block and just is called right two auxiliary blow vent (52b), described left block and right block are to assemble Face to face, and with above the scavenging air belt of cylinder body, be connected, the two auxiliary blow vents (52b) in the right side that the two auxiliary blow vents (51b) in the left side that two scavenging air belts of described cylinder body are provided with described left block (51) respectively are provided with described right block (g52) are connected, it is the two auxiliary blow vent of the left and right block that narrows, when described two auxiliary blow vents and run to two auxiliary shirt rim (g37) that near the skirt section of the described piston piston lower dead center is equipped with while approaching, just be beneficial to and narrow local volume, strengthen local air flow pressure and flow velocity and additional turbulence is returned and altered and fall row, upper each wedge turbulent flow that each ground, left and right is provided with symmetrically in each scavenging road junction (g45) of one, the left and right of the symmetry of the described two auxiliary blow vent that narrows the left and right block and described cylinder body (g44) returns alters both adapteds of sheet (g46), and the row's of falling effect is arranged, both adapteds of two auxiliary shirt rim (g37) that the skirt section of the described two auxiliary blow vent that narrows the left and right block and described piston is equipped with, have the row's of falling effect, the described two auxiliary blow vent that narrows the left and right block, return and alter sheet (g46) with upper each wedge turbulent flow that each ground, left and right is provided with symmetrically in each scavenging road junction (g45) of one, left and right of the symmetry of described cylinder body (g44), and with two auxiliary shirt rim (g37) three's adapted that the skirt section of described piston is equipped with, the more row's effect of falling is arranged, the rear wall (51f) of the two auxiliary blow vents (51b) in the left side that the described described left block (g51) that narrows two auxiliary blow vents of left and right block is provided with is thicker, the minimum 2mm that is greater than of thinnest part, and the oblique angle that is greater than 10 degree is arranged, gain in strength so that root is thicker, the described described left block (g51) that narrows two auxiliary blow vents of left and right block is provided with 4 and strengthens arm pawl (51e), and the square-section of each reinforcement arm pawl is thicker, and the minimum 2mm that is greater than of thinnest part, gain in strength so that cross section is thicker, be provided with long reinforcement (51c) near the back side of the two auxiliary blow vents (51b) in the left side that the described described left block (51) that narrows two auxiliary blow vents of left and right block is provided with, in order to gain in strength to resist the larger local pressure narrowed due to two auxiliary blow vents,Be provided with short reinforcement (51d) near the back side of the pit of the two auxiliary blow vents (51b) in the left side that the described described left block (51) that narrows two auxiliary blow vents of left and right block is provided with, in order to gain in strength to resist the larger local pressure narrowed due to two auxiliary blow vents; The two auxiliary blow vents (52b) in the right side that the described described right block (g52) that narrows two auxiliary blow vents of left and right block is provided with are pits, the two auxiliary blow vents (51b) in high its left side be provided with described left block (g51) of the length and width of its pit are identical, in order to gain in strength, resist the larger local pressure narrowed due to two auxiliary blow vents; The two auxiliary blow vents (52b) in the right side that the described described right block (g52) that narrows two auxiliary blow vents of left and right block is provided with are pits, the two auxiliary blow vents (51b) in the high left side be provided with described left block (g51) of the length and width of its pit are identical, length and width on the 1E33 type are high for being not more than 19x7x4.8mm, narrow local volume with convenient, strengthen local air flow pressure and flow velocity and additional turbulence is returned and altered and fall row; The waste gas of engine is directly discharge not, but indirectly discharges by the nearly tool bore (28a) from aluminum pipe after the catalase hush tube of a meter five; Described low emission gasoline brush cutter is characterized in that described cutter is containing with cutting buttress, beating the grass the moving head (54) of wire (54b) in order to long-acting cutting, and with the disc cutterbar (64) of inner sawtooth (642) in case cutter relieving; With and the carburetor of engine establish four bifurcated nozzles (70a) in order to atomization; And described cutter is provided with interior protective cover (60) and outer protective cover (73) and is provided with its roller length on its outer protective cover and equals to beat the grass the long grass pressing wheel (74) of diameter so that press grass soil moisture conservation and meadow decorative pattern.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: the moving head (54) that described cutter is contained with to cut the buttress way that wire (54b) is provided with its a plurality of sharp swords of a plurality of sharp swords (54a) of beating the grass be on wire, with sharp plain chisel, under hammering, to cut to pile up neatly, its wire is round.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: the moving head (54) that described cutter is contained with the buttress wire (54b) of beating the grass of cutting be provided with a plurality of sharp swords (54a), the way of its a plurality of sharp swords is on wire, with the plunger chip die that sharp edge is arranged, under the impact of stamping machine, to cut to pile up neatly, and its wire is flat.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: the outer cutting edge (641) of the periphery of 4 cuttves that stretch out that the contained disc cutterbar with inner sawtooth (642) (64) of described cutter is provided with is provided with a plurality of outer sawtooth (64a), and described inner sawtooth (642) also has 4, and its every inner sawtooth (642) is established a plurality of sawtooth.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: the outer protective cover (73) of installing on the interior protective cover (60) that described cutter is equipped with is provided with installs draw-in groove (73b) and 2 screw hole positions (73a) in order to installation, and be provided with beat the grass spacing (73c) of rope on its outer protective cover (73), and be provided with grass pressing wheel mounting bar (73d) and the arc enclosing bar (73e) for long grass pressing wheel (74) is installed on its outer protective cover (73).

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is rotating, the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller grows to is 3 times of diameter of its grass pressing wheel less; Spacing (73c) that the described diameter of beating the grass refers to the rope of beating the grass that described its outer protective cover (73) is provided with to the cutter rotary middle spindle apart from being the radius of beating the grass, its 2 times are the described diameter of beating the grass; Its roller length of long grass pressing wheel (74) diameter that equals to beat the grass just in time can be pressed onto the grass just cut, or its roller length equal to beat the grass 1.2 times of diameter.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is rotating, the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller length is 10 times of diameter of its grass pressing wheel, or more, so that press the grass soil moisture conservation.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is rotating and the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller length is 10 times of diameter of its grass pressing wheel, or more, so that press the grass soil moisture conservation.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is provided with the careless groove of a plurality of pressures (74b), its groove is along its roller length direction or straight groove, or the groove of corrugated bending; And the slot cross-section (74a) of the careless groove of described pressure or square, or semicircular, and the careless groove of described a plurality of pressure is at least 2, skid less so that press grass soil moisture conservation and meadow embossing.

Certain technical solution is a kind of low emission gasoline mower, it is characterized in that: the carburetor of described its engine is established four bifurcated nozzles (70a) and is referred to that establishing 4 gaps week along ring on the outlet of the nozzle (70) of the inside of carburetor is four bifurcated nozzles (70a), mixes combustion vapour with improvement and is beneficial to atomization through the fluid state in gap.Or in described carburetor assembly (F56), also along ring, establish 4 gaps week on the outlet that the interior straight tube (70) that improves atomizer is vortex spray bar that helicla flute (71) is arranged and be four bifurcated nozzles (70a), or be 3 bifurcateds, or be 5 bifurcateds, or be six bifurcateds, or be 7 bifurcateds, or be eight bifurcateds,, if 1 gap, or 2 gaps, go out vapour irregular; If 9 above gaps, because outlet is less than 3mm, gap is too fine and closely woven.When oily vapour pours described interior straight tube (70) and the vortex spray bar of helicla flute (71) is arranged through the interior straight tube (70) of the improvement atomizer in described carburetor assembly (F56) or the horn mouth that has the import of the vortex spray bar of helicla flute (71) to be made as the archimedes curve of parabolical horn mouth (72) or conical section, extrude to multi-direction dispersion in 4 gaps or 3-8 the gap of and then from the outlet of described spray bar, along ring week, establishing again, rather than only from a hole to a direction, extrude, again due on described outlet along formed a plurality of its vibrations of back and forth trembling because the cantilever beam principle has between a plurality of gaps of establishing in ring week to the steam flow effect of adding fuel to the flames, will be in the air-breathing moment of gasoline engine, aditus laryngis key position at this trunnion, sharply mixed while handing over atomization and be more conducive to polymerization contaminated product effect and disperse mixed effect at accelerating fluid and the air-flow of coming from air filter, entering two with the carburetion state of atomization more rushes in each scavenging road junction (g45) of one, left and right of symmetry of described cylinder body (g44) of gasoline engine, return and alter sheet (g46) effect and enter two piston and the formed combustion chambers of cylinder that rush gasoline engine and be beneficial to week and reciprocally work through each wedge turbulent flow that each ground, left and right is provided with symmetrically again.

The usefulness of low emission gasoline mower is: the mower cutter is containing with cutting the beat the grass moving head (54) of wire (54b) of buttress, with wire, for nylon wire, being beneficial to long-acting cutting, and is beneficial to anti-cutter relieving with the disc cutterbar (64) of inner sawtooth (642), with and the carburetor of engine establish four bifurcated nozzles (70a), or be 3 bifurcateds, or be 5 bifurcateds, or be six bifurcateds, or be 7 bifurcateds, or be eight bifurcateds, vapour pours described vortex spray bar from horn mouth, extrude to multi-direction dispersion in 4 gaps or 3-8 the gap of and then from the outlet of described spray bar, along ring week, establishing again, rather than only from a hole to a direction, extrude, again due on described outlet along formed a plurality of its vibrations of back and forth trembling because the cantilever beam principle has between a plurality of gaps of establishing in ring week to the steam flow effect of adding fuel to the flames, will be in the air-breathing moment of gasoline engine, aditus laryngis key position at this trunnion, sharply mixed while handing over atomization and be more conducive to polymerization contaminated product effect and disperse mixed effect at accelerating fluid and the air-flow of coming from air filter, carburetion state with atomization more enters engine, and described cutter is provided with the outer protective cover (73) be contained on interior protective cover (60) and is provided with its roller length equal to beat the grass long grass pressing wheel (74) of diameter on its outer protective cover, it is convenient to press grass soil moisture conservation and meadow decorative pattern.The outer cutting edge (641) of the periphery of 4 cuttves that stretch out that the contained disc cutterbar with inner sawtooth (642) (64) of described cutter is provided with is provided with a plurality of outer sawtooth (64a), and described inner sawtooth (642) also has 4, and its every inner sawtooth (642) is established a plurality of sawtooth, greatly improved cutting and boldly confronted a powerful opponent and allow the motionless state that lancinates.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the schematic diagram of mower.

Fig. 2 is the exploded perspective view of the first half of mower.

Fig. 3 is the exploded perspective view of the latter half of mower.

Fig. 4 is the schematic diagram that removes outer cover and protective cover of mower.

Fig. 5 is the exploded perspective view containing engine for brush saw.

Fig. 6 is the generalized section of brush mower with the carburetter body containing four bifurcated nozzles (70a) of engine.

Fig. 7 is the schematic perspective view of brush mower with the carburetter body containing atomizer of engine and carburetor assembly (F56).

Fig. 8 is the schematic perspective view of brush mower with the disc cutterbar that inner cutter hole (642) and outer cutting edge (641) are arranged.

Fig. 9 is the local schematic top plan view of brush mower with the disc cutterbar that inner cutter hole (642) and outer cutting edge (641) are arranged.

Figure 10 is that outer protective cover is provided with its roller length equal to beat the grass schematic perspective view of long grass pressing wheel (74) of diameter.

Figure 11 is the schematic perspective view of disc cutterbar of the belt length grass pressing wheel of brush mower.

Figure 12 is the stock of brush mower and the schematic perspective view of the disc cutterbar that band is beaten the grass.

Figure 13 is the schematic perspective view of the band of the brush mower disc cutterbar of beating the grass.

Figure 14 is the generalized section of piston.

Figure 15 returns and alters the schematic perspective view that gasoline engine cylinder is rushed in two of sheet reduction discharge with scavenging road junction wedge turbulent flow.

Figure 16 returns and alters the local enlarged diagram that gasoline engine cylinder is rushed in two of sheet reduction discharge with scavenging road junction wedge turbulent flow.

Figure 17 is that the two auxiliary blow vent that narrows the left and right block reduces the schematic diagram that the front of the left block of petrol engine is rushed in two of discharge.

Figure 18 is that the two auxiliary blow vent that narrows the left and right block reduces the schematic diagram that the reverse side of the left block of petrol engine is rushed in two of discharge.

Figure 19 two rushes the schematic perspective view of the installation site of the former left and right of petrol engine block.

Figure 20 is that the two auxiliary blow vent that narrows the left and right block reduces the schematic diagram that the right block of petrol engine is rushed in two of discharge.

Figure 21 is that the two auxiliary blow vent that narrows the left and right block reduces the schematic diagram that the two two auxiliary blow vents that narrow that rush petrolic left and right block that discharge close on the piston that adds two auxiliary shirt rims.

Figure 22 is that the two auxiliary blow vent that narrows the left and right block reduces the midship section schematic diagram that the left block of petrol engine is rushed in two of discharge.

As shown in Fig. 1 to Figure 22, in figure:

1. be engine 1E34-48; 2. be hexagon socket cap head screw M6x30; 3. be hexagon socket cap head screw M5x8; 4. be 31 type hex nut M6; 5. be the PP wire clamp; 6. be the PA suspension ring; 7. be 41 type non-metallic insert hexagonal locking nut M5; 8. be POM suspension ring holders; 9. be hexagon socket cap head screw M5x20; 10. meet aluminum pipe 750x before being

26x1.5; 11. be the manipulating handgrip assembly; 12. be to control handle pipe; 13. be 13 band bullet pad hexagon socket cap head screw M5x25; 14. be handgrip holder train wheel bridge; 15. be the handgrip holder; 16. be the left hand handle component; 17. be acrylonitrile-butadiene rubber handgrip shock-absorbing sleeve; 18. be handgrip holder lower plate; 19. be left handle pipe; 20. be five leaf nylon tubes

8.3x1460; 21. be power transmission shaft

8x1531; 22. be deep groove ball bearing; 23. be bullet pad 6; 24. be hexagon socket cap head screw M6x23; 25. be aluminium tube joint; 26. be locking knob; 27. be shaft adapter; 28. be rear aluminum pipe 740x

26x1.5; 29. be 4 hexagon socket cap head screw M5x12; 30. be 4 spring washers 5; 31. be spacing handle spring; 32. be spacing handle lock; 33. be spacing handle; 34. be split washer 2.5; 35. be the protective cover holder; 36. be circlip for hole 26; 37. be circlip for shaft 10; 38. be the small arc-shaped gear; 39. be that the small arc-shaped gear oil is stifled; 40. be hexagon socket cap head screw M6x14; 41. be hexagon socket cap head screw M6x10; 42. be plain washer 6; 43. be gear-box; 44. be the orthodrome gear; 45. be splined shaft; 46. be deep groove ball bearing 6002; 47. be circlip for hole 32; 48. be the gear-box guard shield; 49. be the spline pad; 50. be 3 tooth disc cutterbars; 51. be the cutterhead pressing plate; 52. be the cutterhead guard shield; 53. be that 1 type hex nut M10 is left-handed; 54. be the nylon moving head; 54a. be sharp sword; 54b. be to cut to pile up neatly the wire of beating the grass; 55. be braces; 56. be hexagon nut with flange M5; 57. be small blade; 58. be knife rest; 59. be cross recessed pan head tapping screw ST4x14; 60. be interior protective cover; 61. be shielding support; 62. be hexagon socket cap head screw M5x35; 63. be 2 tooth disc cutterbars; 64. be disc cutterbar; 65. be 8 tooth disc cutterbars; 16-1. be the left hand handle; 16-2. be 1 type hex-head nut M5; 16-3. be Cross Recess Head Screw M5x20; 16-4. be Cross Recess Head Screw M5x30; 66. be the waistband that pallet is arranged; 67. be pallet; 68. be the auxiliary ball that turns; 69. be the catalase hush tube; 70. be the interior straight tube of atomizer; 70a. be four bifurcated nozzles; 71. be that spiral fluted vortex spray bar is arranged; 72. be the parabolical horn mouth of having of atomizer; 73. be outer protective cover; 73a. be the screw hole position; 73b. be that draw-in groove is installed; 73c. be the spacing of rope of beating the grass; 73d. be the grass pressing wheel mounting bar; 73e. be arc enclosing bar; 74. be long grass pressing wheel; 641. be outer cutting edge; 64a. be outer sawtooth; 642. be inner sawtooth; 74a. be the pressure grass slot cross-section of long roller grass pressing wheel; 74b. be the careless groove of a plurality of pressures of long roller grass pressing wheel; 19b. be to have the damping of close circle helical spring shape to take over (19b); F1. be the starter assembly; F2. be to start the driver plate assembly; F3. be 2 oil sealings; F4. be right case; F5. be 2 deep groove ball bearings; F6. be hexagonal cylindrical head plain cushion screw assemblies M5 in 2 moment of torsion 7-9NM * 45; F7. be the muffler ASSY of catalase hush tube (69); F8. be the silencer pad; F9. be the right shock-reducing sleeve of fuel tank; F10. be 2 retaining ring for piston pins; F11. be piston pin; F12. be needle bearing; F14. be piston ring; F15. be crank assemblby; F16. be woodruff key; F17. be the cylinder block pad; G44. be cylinder block; F19. be 2 interior hexagonal cylindrical head screw assemblies M5 * 20; F20. be the engine outer cover; F21. be recessed pan head tapping screw ST5 * 14; F22. be the igniter assembly; F23. be 2 cross fluting screw assemblies M4 * 20; F24. be spark plug; F25. be without asbestos packing sheet mould assembling pad; F26. be 2 mould assembling alignment pins; F27. be left box body; F28. be 5 cross fluting screw assemblies M5 * 25; F29. be the magnetic flywheel; F30. be clutch assembly; F31. be clutch disk; F32. be circlip for shaft; F33. be the left shock-absorbing sleeve L of fuel tank (F33); F34. be the right shock-absorbing sleeve R of fuel tank; F35. be inserts bearing connection seat; F36. be 3 cross fluting screw assemblies M5 * 20; F37. be the train wheel bridge shock-absorbing sleeve; F38. be the lower plate shock-absorbing sleeve; F39. be train wheel bridge; F40. be lower plate; F41. be 2 interior hexagonal cylindrical head screw assemblies M5 * 18; F42. be flame-out wire clamp; F43. be the air filter seat; F44. be 2 air filter seat pad covers; F45. be soft polyurethane foam filter core; F46. be the air filter pressing plate; F47. be 2 M5 bullet pads; F48. be 2 cross fluting coiled hair bullet screw M5 * 63; F49. be the air filter lid; F50. be cross fluting coiled hair screw assemblies M5 * 14; F51. be 2 air inlet pipe pads; F52. be deflector; F53. be polyphenylene sulfide PPS air inlet pipe; F54. be grounding wire component; F55. be without the asbestos packing sheet carburetor packing; F56. be carburetor assembly; F57. be PU yellow transparent oil return pipe; F58. be PU black oil inlet pipe; F59. be oil resistant butadiene-acrylonitrile rubber oil base; F60. be fuel filter assembly; F61. be oil pipe clip; F62. be HDPE blowing fuel tank; F63. be cap assembly of fuel tank; F64. be 5-7NM hexagon-headed bolt plain cushion combination M6X14; F65. be 4 3-5NM cross fluting screw assemblies M5X18; G31. be piston (g31); G37. be two auxiliary shirt rims (g37); G38 is the base (g38) of two auxiliary shirt rims; G39 is lower fillet (g39); G40. be the side (g40) of two auxiliary shirt rims; G41. be upper fillet (g41); G42. be the concave arc limit (g42) on base; G43. be the through hole (g43) of piston and two auxiliary shirt rims; G44. be cylinder body (g44); G45. be scavenging road junction (g45); G46. be that wedge turbulent flow time is altered sheet (g46); G47. be that the wedge turbulent flow goes back to the scavenging road junction (g47) of altering sheet; G48. be the wedge (g48) at logical scavenging road junction; G49. be that the returning of logical scavenging road junction that wedge turbulent flow time is altered sheet altered grid (g49); G50. be the turbulent shield (g50) at logical scavenging road junction; 51b. be left two auxiliary blow vent (51b); 52b. be right two auxiliary blow vent (52b).

Embodiment

For making up the phenomenon that the mobile jib trace rocks due to the existing mechanism of brush mower, the main aluminium bar of the length of a kind of improvement for brush saw provided by the invention, within the catalase hush tube is packed machine into, and is used to the F41 screw fastening; Make waste gas by muffler ASSY and catalase hush tube 69, then by long main aluminium bar, and from gap or the discharge of aperture gap of close the cutter of aluminium boom end.

According to customer requirement, the useful four-stroke engine of mower is as 139FA, and also useful two-stroke is as 1E34F.Can improve power per liter more than 50% with two stroke engine with respect to four-stroke engine, but will take measures in discharge; Mower is portable dam, wishes that power is gently little; If exert oneself less by four-stroke engine; Former stock changes the hush tube of many honeycombs and catalase into, from far-end, discharges; Its usefulness of brush saw that has catalase hush tube and swirl sprayer and two to rush many scavenging ports engine is: changed former cause and hovered around engine near people's the engine direct waste gas of putting that runs in, part waste gas can suck by launched machine carburetor air mouth, and the part waste gas situation that can be sucked by the people, after the catalase hush tube indirectly the method for discharge make to discharge low and floss hole from a little away from the people, safer, and reduce discharging reinforcement; There is transparent protective cover to be more convenient for observing, the mode of operation of the new pallet waistband of brush saw also is provided, while enlarging operating radius, ought run into large shrub in other words, while reaching treetop, maybe to cut while having puddle to stop at a distance, use the lengthening mode that engine is put into to the pallet waistband, make the cutterhead elongation, this is easily more stable operation also.Transparent protective cover is arranged, and is on the protective cover of cutter, and local transparent or all transparent can be observed better and cut off and operate, and reduces jam.The bush knife that periphery blade and interior all blades are arranged, improved significantly brush allow the branch and jam.Also have the loosening stock interface that is difficult for of limit flange and lateral filament button, spiral spring or wave spring are arranged and the handgrip of vibration damping, the carburetor of inside spin whirlpool nozzle is arranged; Environmental protection quality and the usability of mower have been promoted with low emission gasoline engine and multinomial measure.Low emission gasoline mower is characterized in that described cutter is containing with cutting buttress, beating the grass the moving head 54 of wire 54b in order to long-acting cutting, and with the disc cutterbar 64 of inner sawtooth 642 in case cutter relieving; With and the carburetor of engine establish four bifurcated nozzle 70a in order to atomization; And described cutter is provided with interior protective cover 60 and outer protective cover 73 and is provided with its roller length on its outer protective cover and equals to beat the grass the long grass pressing wheel 74 of diameter so that press grass soil moisture conservation and meadow decorative pattern, therefore its usefulness is many.

54 of contained moving heads of the cutter of low emission gasoline mower with the buttress wire 54b of beating the grass that cuts be provided with a plurality of sharp sword 54a, the way of its a plurality of sharp swords is on wire, with sharp plain chisel, under hammering, to cut to pile up neatly.Perhaps, 54 of contained moving heads of cutter with the buttress wire 54b of beating the grass that cuts be provided with a plurality of sharp sword 54a, the way of its a plurality of sharp swords is on wire, with the plunger chip die that sharp edge is arranged, under the impact of stamping machine, to cut to pile up neatly.Cut the buttress wire of beating the grass durable more than nylon wire, not only be beneficial to long-acting cutting, few with line, save into the dish nylon wire; And can beat the grass, can also cut straw, and nylon wire cuts motionless thin bar; While cutting different object, beat the grass wire and disc cutterbar complement each other each has something to recommend him.The outer cutting edge 641 of the periphery of 4 cuttves that stretch out that the contained disc cutterbar with inner sawtooth 642 64 of cutter is provided with is provided with a plurality of outer sawtooth 64a, and described inner sawtooth 642 also has 4, and its every inner sawtooth 642 establishes a plurality of sawtooth, therefore handy.The outer protective cover 73 of installing on the interior protective cover 60 that cutter is equipped with is provided with installs draw-in groove 73b and 2 screw hole position 73a in order to installation, and on its outer protective cover 73, be provided with beat the grass the rope spacing 73c, and be provided with grass pressing wheel mounting bar 73b and arc enclosing bar 73b for long grass pressing wheel 74 is installed on its outer protective cover 73, therefore be easy to install.Described its roller length equal to beat the grass long grass pressing wheel 74 of diameter is rotating, and the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller grows to is 3 times of diameter of its grass pressing wheel less; The spacing 73c that the described diameter of beating the grass refers to the rope of beating the grass that described its outer protective cover 73 is provided with to the cutter rotary middle spindle apart from being the radius of beating the grass, its 2 times are the described diameter of beating the grass; Long grass pressing wheel 74 its roller length diameter that equals to beat the grass just in time can be pressed onto the grass just cut, therefore press careless successful.Its roller length equal to beat the grass long grass pressing wheel 74 of diameter is rotating, the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller length is 10 times of diameter of its grass pressing wheel, both be convenient to press the grass soil moisture conservation, material-saving again, and if more carefully just can roll several circles because of the same distance wheel footpath of advancing more and be conducive to press grass.Wheel too slightly takes material, and what also turn is excessively slow, and dash is few, and it is poor to roll.Roller length is convenient to cover face, and efficiency is high; So will be with the grass pressing wheel of thin length.Because described its roller length equal to beat the grass long grass pressing wheel 74 of diameter is provided with the careless groove 74b of a plurality of pressures, its groove is along its roller length direction or straight groove, or the groove of corrugated bending again; And the slot cross-section 74a of the careless groove of described pressure or square, or semicircular, skid less therefore be convenient to press grass soil moisture conservation and meadow embossing.Moreover the carburetor of described engine is established four bifurcated nozzle 70a and referred to that establishing 4 gaps week along ring on the outlet of the nozzle 70 of the inside of carburetor is four bifurcated nozzle 70a, therefore improved, mix combustion vapour and be beneficial to atomization through the fluid state in gap; The carburetor of described its engine is established four bifurcated nozzle 70a and is referred to that establishing 4 gaps week along ring on the outlet of the nozzle 70 of the inside of carburetor is four bifurcated nozzle 70a, mixes combustion vapour with improvement and is beneficial to atomization through the fluid state in gap.Or, in described carburetor assembly F56, also along ring, establish 4 gaps week on the outlet that the interior straight tube 70 that improves atomizer is vortex spray bar that helicla flute 71 is arranged and be four bifurcated nozzle 70a, or be 3 bifurcateds, or be 5 bifurcateds, or be six bifurcateds, or be 7 bifurcateds, or be eight bifurcateds; If 1 gap, or 2 gaps, go out vapour irregular; If 9 above gaps, because outlet is less than 3mm, gap is too fine and closely woven.When oily vapour pours described interior straight tube 70 and the vortex spray bar of helicla flute 71 is arranged through the interior straight tube 70 of the improvement atomizer in described carburetor assembly F56 or the horn mouth that has the import of the vortex spray bar of helicla flute 71 to be made as the archimedes curve of parabolical horn mouth 72 or conical section, extrude to multi-direction dispersion in 4 gaps or 3-8 the gap of and then from the outlet of described spray bar, along ring week, establishing again, rather than only from a hole to a direction, extrude, again due on described outlet along formed a plurality of its vibrations of back and forth trembling because the cantilever beam principle has between a plurality of gaps of establishing in ring week to the steam flow effect of adding fuel to the flames, will be in the air-breathing moment of gasoline engine, aditus laryngis key position at this trunnion, sharply mixed while handing over atomization and be more conducive to polymerization contaminated product effect and disperse mixed effect at accelerating fluid and the air-flow of coming from air filter, entering two with the carburetion state of atomization more rushes in each scavenging road junction g45 of one of left and right of symmetry of cylinder body g44 of gasoline engine, entering two piston and the formed combustion chambers of cylinder body that rush gasoline engine therefore the wedge be provided with through it again turbulent flow time is altered sheet g46 effect is beneficial to week and reciprocally works.The air mass flow coefficient of known carburetor in Reynolds number 8x (1000-100000) scope only in 0.05 left and right, thereby and the discharge coefficient of main jet is that Reynolds number increases and sharply increases and cause the Carburettor performace curve to reduce making mixture strength be tending towards enriching with the increase of the aditus laryngis vacuum of this trunnion; A plurality of of the aditus laryngis of this trunnion it have the vibration of back and forth trembling more to be conducive to accelerate atomization to accelerate carburetion.Narrow wedge turbulent flow that the scavenging road junction g45 of the two auxiliary blow vent of left and right block and cylinder body g44 is provided with and return and alter sheet g46, and with two auxiliary shirt rim 937 three's adapteds that the skirt section of piston is equipped with, the more row's effect of falling is arranged.To collect the crystallization that domestic and foreign experience is groped for many years; Beyond thought reduction of discharging effect up to standard is arranged unexpectedly, not only can reach 50 gram marks, and can drop to 39.9 grams, safety coefficient is large, and waster is few, and this is significant to large quantities of volume productions.It has been determined and has started batch in two application of rushing gasoline engine and has produced, the developing direction that is indicating 20 years from now on low emission gasoline mowers.The present invention relates to two and rush petrolic improvement, function wave combustion chamber and float electrode collocation are arranged, two auxiliary shirt rims are arranged, scavenging air belt wedge sheet is arranged, energy-saving and emission-reduction are up to standard, and multi-functional, and its bright spot is remarkable; But the invention that the mankind aspire after perfection is endless, therefore weave silk, repeat not to the utmost in the hope of casting a brick to attract jade.

Claims (9)

1. a low emission gasoline grass-mowing machine, containing the single-cylinder air-cooled petrol engine of small two-stroke, stock, cutter, manipulating handgrip assembly, described stock is provided with aluminum pipe, described aluminum pipe inside is provided with cavity, be provided with power transmission shaft in the cavity of described aluminum pipe, its upper end of described aluminum pipe and power transmission shaft is equiped with described engine, and its lower end of described aluminum pipe and power transmission shaft is equiped with described cutter, and the middle part of described aluminum pipe is equiped with described handgrip; Described low emission gasoline brush cutter its containing engine 1E34-48 (1), hexagon socket cap head screw M6x30 (2), hexagon socket cap head screw M5x8 (3), 31 type hex nut M6 (4), PP wire clamp (5), PA suspension ring (6), 41 type non-metallic insert hexagonal locking nut M5 (7), POM suspension ring holder (8), hexagon socket cap head screw M5x20 (9), the front aluminum pipe 750x that connects 26x1.5 (10), manipulating handgrip assembly (11), control handle pipe (12), 13 band bullet pad hexagon socket cap head screw M5x25 (13), handgrip holder train wheel bridge (14), handgrip holder (15), left hand handle component (16), acrylonitrile-butadiene rubber handgrip shock-absorbing sleeve (17), handgrip holder lower plate (18), left handle pipe (19), five leaf nylon tubes

8.3x1460 (20), power transmission shaft

8x1531 (21), deep groove ball bearing (22), bullet pad 6 (23), hexagon socket cap head screw M6x23 (24), aluminium tube joint (25), locking knob (26), shaft adapter (27),Rear aluminum pipe 740x 26x1.5 (28), 4 hexagon socket cap head screw M5x12 (29), 4 spring washers 5 (30), spacing handle spring (31), spacing handle lock (32), spacing handle (33), split washer 2.5 (34), protective cover holder (35), circlip for hole 26 (36), circlip for shaft 10 (37), small arc-shaped gear (38), the small arc-shaped gear oil blocks up (39), hexagon socket cap head screw M6x14 (40), hexagon socket cap head screw M6x10 (41), plain washer 6 (42), gear-box (43), orthodrome gear (44), splined shaft (45), deep groove ball bearing 6002 (46), circlip for hole 32 (47), gear-box guard shield (48), spline pad (49), 3 tooth disc cutterbars (50), cutterhead pressing plate (51), cutterhead guard shield (52), 1 type hex nut M10 left-handed (53), nylon moving head (54), braces (55), hexagon nut with flange M5 (56), small blade (57), knife rest (58), cross recessed pan head tapping screw ST4x14 (59), protective cover A (60), shielding support (61), hexagon socket cap head screw M5x35 (62), 2 tooth disc cutterbars (63), 4 tooth disc cutterbars (64), 8 tooth disc cutterbars (65), left hand is (16-1), 1 type hex-head nut M5 (16-2), Cross Recess Head Screw M5x20 (16-3), Cross Recess Head Screw M5x30 (16-4), the waistband (66) that pallet (67) are arranged, the auxiliary ball (68) that turns, catalase hush tube (69), described engine, or with little to 1E32F, or with greatly to 1E48F, it comprises starter assembly (F1), start driver plate assembly (F2), 2 oil sealings (F3), right case (F4), 2 deep groove ball bearings (F5), hexagonal cylindrical head plain cushion screw assemblies M5 in 2 moment of torsion 7-9NM * 45 (F6), the muffler ASSY (F7) of catalase hush tube (69), silencer pad (F8), the right shock-reducing sleeve of fuel tank (F9), 2 retaining ring for piston pins (F10), piston pin (F11), needle bearing (F12), piston (F13), piston ring (F14), crank assemblby (F15), woodruff key (F16), cylinder block pad (F17), cylinder block (F18), 2 interior hexagonal cylindrical head screw assemblies M5 * 20 (F19), engine outer cover (F20), recessed pan head tapping screw ST5 * 14 (F21),Igniter assembly (F22), 2 cross fluting screw assemblies M4 * 20 (F23), spark plug (F24), without asbestos packing sheet mould assembling pad (F25), 2 mould assembling alignment pins (F26), left box body (F27), 5 cross fluting screw assemblies M5 * 25 (F28), magnetic flywheel (F29), clutch assembly (F30), clutch disk (F31), circlip for shaft (F32), the left shock-absorbing sleeve L of fuel tank (F33), the right shock-absorbing sleeve R of fuel tank (F34), inserts bearing connection seat (F35), 3 cross fluting screw assemblies M5 * 20 (F36), train wheel bridge shock-absorbing sleeve (F37), lower plate shock-absorbing sleeve (F38), train wheel bridge (F39), lower plate (F40), 2 interior hexagonal cylindrical head screw assemblies M5 * 18 (F41), flame-out wire clamp (F42), air filter seat (F43), 2 air filter seat pad covers (F44), soft polyurethane foam filter core (F45), air filter pressing plate (F46), 2 M5 bullet pads (F47), 2 cross fluting coiled hair bullet screw M5 * 63 (F48), air filter lid (F49), cross fluting coiled hair screw assemblies M5 * 14 (F50), 2 air inlet pipe pads (F51), deflector (F52), polyphenylene sulfide PPS air inlet pipe (F53), grounding wire component (F54), without asbestos packing sheet carburetor packing (F55), carburetor assembly (F56), PU yellow transparent oil return pipe (F57), PU black oil inlet pipe (F58), oil resistant butadiene-acrylonitrile rubber oil base (F59), fuel filter assembly (F60), oil pipe clip (F61), HDPE blowing fuel tank (F62), cap assembly of fuel tank (F63), 5-7NM hexagon-headed bolt plain cushion combination M6X14 (F64), 4 3-5NM cross fluting screw assemblies M5X18 (F65), its engine 1E34-48 (1) comprised of described gasoline brush cutter, by described hexagon socket cap head screw M6x30 (2), hexagon socket cap head screw M5x8 (3), and 31 type hex nut M6 (4), with described before connect aluminum pipe (10) and be connected, connect the outside of the pipe of aluminum pipe (10) before described, by described PP wire clamp (5), PA suspension ring (6), 41 type non-metallic insert hexagonal locking nut M5 (7), POM suspension ring holder (8), hexagon socket cap head screw M5x20 (9) and form the braces part with braces (55), in order to braces is worn on single shoulder, the aluminum pipe 750x connect before described

26x1.5 it is (10) upper,Be equiped with manipulating handgrip assembly (11), by controlling, handle pipe (12), many band bullet pad hexagon socket cap head screw M5x25 (13), handgrip holder train wheel bridge (14), handgrip holder (15), left hand handle component (16), acrylonitrile-butadiene rubber handgrip shock-absorbing sleeve (17), handgrip holder lower plate (18), left handle pipe (19) institute are common to be formed; Connect the inside of the pipe of aluminum pipe (10) before described, be equiped with described five leaf nylon tubes

8.3x1460 (20), power transmission shaft

8x1531 (21), and deep groove ball bearing (22) so that transmission; Before described, connect aluminum pipe (10) by described bullet pad 6 (23), hexagon socket cap head screw M6x23 (24), aluminium tube joint (25), locking knob (26), shaft adapter (27), with described rear aluminum pipe 740x

26x1.5 (28) connect, and form spacing Handleset by 4 hexagon socket cap head screw M5x12 (29), 4 spring washers 5 (30), spacing handle spring (31), spacing handle lock (32), spacing handle (33), split washers 2.5 (34); In the end of described rear aluminum pipe (28), be equiped with described protective cover holder (35), circlip for hole 26 (36), circlip for shaft 10 (37), small arc-shaped gear (38), small arc-shaped gear oil stifled (39), and many bands bullet pad hexagon socket cap head screw M5x25 (13), hexagon socket cap head screw M6x14 (40), hexagon socket cap head screw M6x10 (41), plain washer 6 (42),Reach gear-box (43), orthodrome gear (44), splined shaft (45), deep groove ball bearing 6002 (46), circlip for hole 32 (47), gear-box guard shield (48), spline pad (49), 3 tooth disc cutterbars (50), cutterhead pressing plate (51), cutterhead guard shield (52); Described cutter contains protective cover and moving head and disc cutterbar in order to select; The dress cutterhead will be with described 1 type hex nut M10 left-handed (53); Or dress nylon moving head (54) is to replace disc cutterbar, and the cut-out described small blade (57) that line uses of beating the grass, be contained in described protective cover A (60) by hexagon nut with flange M5 (56), knife rest (58), cross recessed pan head tapping screw ST4x14 (59) upper, and shielding support (61) and hexagon socket cap head screw M5x35 (62) will be installed; But cutterhead multiselect, or 2 tooth disc cutterbars (63), or 4 tooth disc cutterbars (64), or 8 tooth disc cutterbars (65), so that the shrub of different cultivars is cut in choosing; Described left hand handle component (16), by left hand, (16-1), 1 type hex-head nut M5 (16-2), Cross Recess Head Screw M5x20 (16-3), Cross Recess Head Screw M5x30 (16-4) are formed, be arranged on left handle pipe (19); And the waistband (66) of pallet (67) is arranged, and can tie up to people's waist, pallet (67) and auxiliary ball (68) movable contact that turns, auxiliaryly turn ball (68) and be connected with engine outer cover (F20), in order to further lengthen cut coverage; Described catalase hush tube (69), the gas outlet of connection muffler ASSY (F7), so that waste gas is discharged near cutter through aluminum pipe; Described engine, or use 1E30, or greatly to 48 cylinder diameter; Engine start partly comprises starter assembly (F1), starts driver plate assembly (F2), is furnished with 2 oil sealings (F3) and 2 deep groove ball bearings (F5), in order to be contained in rotationally on the described right case (F4) of engine; By hexagonal cylindrical head plain cushion screw assemblies M5 * 45 (F6) in 2 moment of torsion 7-9NM, the muffler ASSY of catalase hush tube (69) (F7) and silencer pad (F8), be fixed on cylinder block (F18); The right shock-reducing sleeve of fuel tank (F9) is housed on cylinder block (F18); 2 retaining ring for piston pins (F10), piston pin (F11), needle bearing (F12), piston (F13), piston ring (F14) and crank assemblby (F15) are housed in cylinder block (F18), establish woodruff key (F16) on bent axle; Cylinder block pad (F17) is mounted on cylinder block (F18); 2 interior hexagonal cylindrical head screw assemblies M5 * 20 (F19) and recessed pan head tapping screw ST5 * 14 (F21) are fixed on engine outer cover (F20) on cylinder block (F18); M4 * 20 (F23) are fixing by 2 cross fluting screw assemblies for igniter assembly (F22); Spark plug (F24) also is contained on cylinder block (F18); On cylinder block (F18), put without asbestos packing sheet mould assembling pad (F25),2 mould assembling alignment pins (F26), and with the fixing left box body (F27) of 5 crosses fluting screw assemblies M5 * 25 (F28); Magnetic flywheel (F29) is contained on bent axle, and matches with clutch assembly (F30), clutch disk (F31) and circlip for shaft (F32); The right shock-absorbing sleeve R of the left shock-absorbing sleeve L of fuel tank (F33) and fuel tank (F34) is contained on described outer cover (20); Inserts bearing connection seat (F35) fixes by 3 cross fluting screw assemblies M5 * 20 (F36); Train wheel bridge shock-absorbing sleeve (F37), lower plate shock-absorbing sleeve (F38) and train wheel bridge (F39) lower plate (F40) are housed on described connection seat (F35), also clamp with 2 interior hexagonal cylindrical head screw assemblies M5 * 18 (F41); Flame-out wire clamp (F42) also is housed on described connection seat (F35); Air filter seat (F43), 2 air filter seat pad covers (F44), soft polyurethane foam filter core (F45), air filter pressing plate (F46) form air filter, and are packed on carburetor by 2 M5 bullet pads (F47) and 2 cross fluting coiled hair bullet screw M5 * 63 (F48) air filter lids (F49), cross fluting coiled hair screw assemblies M5 * 14 (F50); 2 air inlet pipe pads (F51), deflector (F52), polyphenylene sulfide PPS air inlet pipe (F53), grounding wire component (F54), without asbestos packing sheet carburetor packing (F55), carburetor assembly (F56), form carburetor; PU yellow transparent oil return pipe (F57), PU black oil inlet pipe (F58), oil resistant butadiene-acrylonitrile rubber oil base (F59), fuel filter assembly (F60), oil pipe clip (F61), HDPE blowing fuel tank (F62), cap assembly of fuel tank (F63) form fuel tank; And 5-7NM hexagon-headed bolt plain cushion combination M6X14 (F64) is fixing described startup driver plate assembly (F2) use, as for 4 3-5NM crosses fluting screw assemblies M5X18 (F65), be the use of fixing described starter assembly (F1); Described have the waistband (66) of pallet (67) to be provided with pallet (67), can place the auxiliary ball (68) that turns on pallet (67), and auxiliary turn ball (68) and be contained in external engine, or directly the brush cutter engine is placed on to the operation that comes up of pallet (67) that waistband (66) is provided with; Pallet (67) and auxiliary ball (68) movable contact that turns, auxiliaryly turn ball (68) and be connected with engine outer cover (F20), in order to further lengthen cut coverage; Described catalase hush tube (69), the one termination is led to the gas outlet of muffler ASSY (F7), and its another termination aluminum pipe so that waste gas is through described aluminum pipe, and is discharged near cutter; Described catalase hush tube (69) is aluminum, waste gas is arranged by order to the aluminium dioxide catalyst effect is arranged; Described muffler ASSY (F7) is aluminum, waste gas is arranged by order to the aluminium dioxide catalyst effect is arranged; Connect aluminum pipe (10) and rear aluminum pipe (28) before described or separate, or an aluminum pipe,Waste gas is arranged by order to the aluminium dioxide catalyst effect is arranged; Five leaf nylon tubes in described aluminum pipe are established the foam honeycomb body, and add the catalase catalyst at the foam honeycomb body, so as to have waste gas by the time catalyst multiple catalyzing effect arranged; Described 2 tooth disc cutterbars (63), 4 tooth disc cutterbars (64), 8 tooth disc cutterbars (65), for selecting, are commonly referred to as the disc cutterbar of cutter, and it is provided with a plurality of outer cutting edges (641) in the cutterhead periphery, so that the few cutter relieving of brush; Described 2 tooth disc cutterbars (63), 4 tooth disc cutterbars (64), 8 tooth disc cutterbars (65) are for selecting, and it is provided with a plurality of inner cutter holes (642) in the cutterhead periphery, so that card branch in brush not; In described carburetor assembly (F56), improve the interior straight tube (70) of atomizer for the vortex spray bar of helicla flute (71) is arranged, be beneficial to disperse mixed effect; In described carburetor assembly (F56), the import of vortex spray bar that improves the interior straight tube (70) of atomizer or helicla flute (71) arranged is for there being parabolical horn mouth (72), or conical section is beneficial to polymerization contaminated product effect as the horn mouth of archimedes curve; Upper in described left handle pipe (19), (19b) taken in the damping that is provided with close circle helical spring shape, so that further damping; Employing has protective cover transparent or partially transparent (60), in order to convenient observation brush operation; The single-cylinder air-cooled petrol engine of small two-stroke that this brush cutter adopts, little of 1E32, greatly to 1E47.5, multiplex 1E34F or 1E39F; The engine that belongs to low emission, be the combustion chamber that function wave is arranged of the improvement of internal combustion engine and with the basis of the collocation of the internal combustion engine ignition device that active receiving electrode and fine motion discharge electrode are arranged on, and in Jia Shuanfu shirt rim, piston skirt, reduce on the petrolic basis of hydrocarbon emission, and return and alter on the petrol engine basis that falls row at logarithmic differentiation isogonal line shirt rim, improved piston skirt turbulent flow, the further improved two auxiliary blow vent that narrows the left and right block reduces two of discharge and rushes petrol engine; In Jia Shuanfu shirt rim, piston skirt, unexpectedly have and reduce discharging effect up to standard; Logarithmic differentiation isogonal line shirt rim, piston skirt turbulent flow returns and alters the petrol engine that falls row is to be equipped with two auxiliary shirt rims (g37) in the skirt section of piston (g31); Described two auxiliary shirt rim (g37) is on the basis of former two shirt rims of the bilateral that there is not the connecting rod pin-and-hole that retains original piston, and the bilateral that the connecting rod pin-and-hole is arranged in the skirt section of piston (g31) below, an auxiliary shirt rim is added on every one side, can be described as two auxiliary shirt rims (g37); Described two auxiliary shirt rim, it is containing the through hole (g43) of concave arc limit (g42), piston and two auxiliary shirt rims on base (g38), lower fillet (g39), side (g40), upper fillet (g41), base, piston skirt is located at shirt rim with isogonal a section of logarithmic differentiation equation, it is conducive to auxiliary guiding, additional turbulence is returned and is altered and fall row, and lubrication assistant and heat radiation; Described two auxiliary shirt rim or use aluminium alloy, or with composite in order to reduce cylinder prepareding gap; Each auxiliary shirt rim and described former two shirt rims of described two auxiliary shirt rims (g37) are all the cylindrical prolongations along outside piston week,And its projection is thrown on the face vertical with the piston movement direction along the outside piston week quartering, it is longer that each auxiliary shirt rim of described two auxiliary shirt rims (g37) extends along the cylinder in outside piston week than described former two shirt rims, that is to say, the base of two auxiliary shirt rims (g38) is more farther apart from the connecting rod pin-and-hole on the direction of the cylinder extended line along piston than the base of former two shirt rims, two auxiliary shirt rims are higher, piston and skirt section are longer, and its effect is to be conducive to the guiding length of lengthened piston and auxiliary guiding, the both sides of described two auxiliary shirt rims (g37) are provided with the side (g40) of two auxiliary shirt rims, and it connects the base (g38) of piston (31) and two auxiliary shirt rims, the both sides of described two auxiliary shirt rims (g37), be provided with the side (g40) of two auxiliary shirt rims on the base (g38) that connects piston (31) and pair auxiliary shirt rims, and the angle of the side of its both sides (g40) is greater than 100 degree, the both sides of described two auxiliary shirt rims (37) are provided with the side (g40) of two auxiliary shirt rims, and it is that upper fillet (g41) by the side of two auxiliary shirt rims connects piston (g31), the both sides of described two auxiliary shirt rims (g37) are provided with the side (g40) of two auxiliary shirt rims, and it is lower fillet (g39) by the side of the two auxiliary shirt rims base (g38) that connects two auxiliary shirt rims, establish concave arc limit (g42) on the base of described two auxiliary shirt rims (g37), described concave arc limit (g42) or circular arc, or involute, or parabola, or other functions, fall row in order to assisting, establish through hole (g43) on described two auxiliary shirt rim (g37), or pit, in order to lubrication assistant and heat radiation, the upper piston that reaches in described two auxiliary shirt rim (g37) is provided with a plurality of through holes (g43), and it slightly is del arranges, and many rows are arranged, and the most descending through hole is few, and the Kong Yue that more up works is many, in order to lubrication assistant and heat radiation, cylinder body (g44) is two to rush the petrolic respectively cylinder body (g44) at one scavenging road junction (g45) of left and right that contains along Central Symmetry ground on the cylinder chamber of dress piston, on each scavenging road junction (g45) of one, the left and right of the symmetry of described cylinder body (g44), respectively each ground, left and right is provided with wedge turbulent flow time and alters sheet (g46) symmetrically, utilize the equal feature of logatithmic spiral tool pressure angle of higher mathematics, make described a section of having by the logatithmic spiral of logarithmic differentiation equation, the mixed air-flow gushed thereon is just easily steady, block waste gas and return and alter in order to reduce discharge in order to utilize equal pressure angle to produce turbulent flow at scavenging road junction place, described wedge turbulent flow returns alters the side of outlet of the scavenging air belt of pressing close to piston that closes on lower dead center of bottom of below that sheet (g46) is located at the scavenging road junction (g45) of cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters sheet (46) and comprises the wedge turbulent flow and go back to the scavenging road junction (g47) of altering sheet, wedge (g48), wedge turbulent flow that the wedge turbulent flow goes back to the logical scavenging road junction of altering sheet and return returning of the logical scavenging road junction of altering sheet and alter the turbulent shield (g50) that grid (g49), wedge turbulent flow go back to the logical scavenging road junction of altering sheet, all one section of the tool logatithmic spiral, described wedge turbulent flow time is altered sheet (g46) and slightly is inclined wedge-shaped,The large end of described inclined wedge-shaped is connected to side of the outlet of the scavenging air belt of pressing close to piston that closes on lower dead center of the bottom of below at the scavenging road junction (g45) of cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters wedge turbulent flow that sheet (g46) comprises and goes back to the scavenging road junction (g47) of altering sheet and be located at described wedge turbulent flow and go back to the top of altering sheet (46), that is to say a section of its tool logatithmic spiral of small end that returns the inclined wedge-shaped of altering sheet (g46) at the wedge turbulent flow, described wedge turbulent flow return alter wedge (g48) that described wedge turbulent flow that sheet (g46) comprises goes back to the logical scavenging road junction of altering sheet be located at the wedge turbulent flow return alter the inboard of sheet (g46) and with the bottom connection of the below at the scavenging road junction (g45) of cylinder body, a section of its tool logatithmic spiral of described inboard, described wedge turbulent flow returns alters described wedge turbulent flow that sheet (46) comprises and returns returning of the logical scavenging road junction of altering sheet and alter grid (g49) and be located at the intersection of a side of outlet that the wedge turbulent flow returns the scavenging air belt at the scavenging road junction (g45) of altering sheet and cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters described wedge turbulent flow that sheet (46) comprises and returns returning of the logical scavenging road junction of altering sheet and alter grid (g49) and be located at the chamfering place of a side of outlet that the wedge turbulent flow returns the scavenging air belt at the scavenging road junction (g45) of altering sheet and cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow returns alters described wedge turbulent flow that sheet (46) comprises and returns returning of the logical scavenging road junction of altering sheet and alter grid (g49) and be located at the rounding place of a side of outlet that the wedge turbulent flow returns the scavenging air belt at the scavenging road junction (g45) of altering sheet and cylinder body, a section of its tool logatithmic spiral, described wedge turbulent flow return alter sheet (g46) above be provided with the turbulent shield (g50) that the wedge turbulent flow goes back to the logical scavenging road junction of altering sheet, the one end returns and alters the sheet chamfering place crossing with a side of the outlet of the scavenging air belt at the scavenging road junction (g45) of cylinder body and be connected with being located at wedge turbulent flow, and its other end and wedge turbulent flow time are altered the top of sheet and be that is to say that the small end of with wedge, altering the inclined wedge-shaped of sheet (g46) for turbulent time is connected, and a section of top its tool logatithmic spiral of described turbulent shield, the two auxiliary blow vent that narrows the left and right block reduces two of discharge and rushes petrol engine, containing left block, right block, piston, and known combustion chamber, spark plug, cylinder body, cylinder cap, cylinder barrel, connecting rod, crankcase, lubricating oil pump, lubricating system, fuel system, ignition system, cooling system, described cylinder body (g44) is two to rush the petrolic respectively cylinder body (44) at one scavenging road junction (g45) of left and right that contains along Central Symmetry ground on the cylinder chamber of dress piston, on each scavenging road junction (g45) of one, the left and right of the symmetry of described cylinder body (g44), respectively each ground, left and right is provided with wedge turbulent flow time and alters sheet (g46) symmetrically, the skirt section of described piston is equipped with two auxiliary shirt rims (g37), described two auxiliary shirt rim (g37) is on the basis of former two shirt rims of the bilateral that there is not the connecting rod pin-and-hole that retains original piston, and the bilateral that the connecting rod pin-and-hole is arranged in the skirt section of piston (g31) below, an auxiliary shirt rim is added on every one side, can be described as two auxiliary shirt rims (g37), described two auxiliary shirt rim,It is containing base (g38), lower fillet (g39), side (g40), upper fillet (g41), the concave arc limit (g42) on base, the through hole (g43) of piston and two auxiliary shirt rims, its piston skirt of described piston also claims isogonal one section to be located at shirt rim with the logarithm line of logarithmic differentiation equation, the limit of the part of its shirt rim is a section that pressure angle approaches the equal logatithmic spiral by the logarithmic differentiation equation, utilize the equal feature of logatithmic spiral tool pressure angle of higher mathematics, making sheet have one section of logatithmic spiral blocks waste gas and returns and alter in order to reduce discharge in order to utilize equal pressure angle to produce turbulent flow at place, scavenging road junction, described two auxiliary shirt rim or use aluminium alloy, or with composite in order to reduce cylinder prepareding gap, use the CNC machining center, first make the tungsten copper electrode, with the auxiliary molding of the lathe that the three-dimensional rotation head is arranged, then produce in batches with die casting machine, machined and plating again, its left block of described left block and right block and right block respectively are provided with and change the little two auxiliary blow vent narrowed down, described two auxiliary blow vent is located at left block and just is called left two auxiliary blow vent (51b), described two auxiliary blow vent is located at right block and just is called right two auxiliary blow vent (52b), described left block and right block are to assemble Face to face, and with above the scavenging air belt of cylinder body, be connected, the two auxiliary blow vents (52b) in the right side that the two auxiliary blow vents (51b) in the left side that two scavenging air belts of described cylinder body are provided with described left block (51) respectively are provided with described right block (g52) are connected, it is the two auxiliary blow vent of the left and right block that narrows, when described two auxiliary blow vents and run to two auxiliary shirt rim (g37) that near the skirt section of the described piston piston lower dead center is equipped with while approaching, just be beneficial to and narrow local volume, strengthen local air flow pressure and flow velocity and additional turbulence is returned and altered and fall row, upper each wedge turbulent flow that each ground, left and right is provided with symmetrically in each scavenging road junction (g45) of one, the left and right of the symmetry of the described two auxiliary blow vent that narrows the left and right block and described cylinder body (g44) returns alters both adapteds of sheet (g46), and the row's of falling effect is arranged, both adapteds of two auxiliary shirt rim (g37) that the skirt section of the described two auxiliary blow vent that narrows the left and right block and described piston is equipped with, have the row's of falling effect, the described two auxiliary blow vent that narrows the left and right block, return and alter sheet (g46) with upper each wedge turbulent flow that each ground, left and right is provided with symmetrically in each scavenging road junction (g45) of one, left and right of the symmetry of described cylinder body (g44), and with two auxiliary shirt rim (g37) three's adapted that the skirt section of described piston is equipped with, the more row's effect of falling is arranged, the rear wall (51f) of the two auxiliary blow vents (51b) in the left side that the described described left block (g51) that narrows two auxiliary blow vents of left and right block is provided with is thicker, the minimum 2mm that is greater than of thinnest part, and the oblique angle that is greater than 10 degree is arranged, gain in strength so that root is thicker, the described described left block (g51) that narrows two auxiliary blow vents of left and right block is provided with 4 and strengthens arm pawl (51e), and the square-section of each reinforcement arm pawl is thicker, and the minimum 2mm that is greater than of thinnest part, gain in strength so that cross section is thicker,Be provided with long reinforcement (51c) near the back side of the two auxiliary blow vents (51b) in the left side that the described described left block (g51) that narrows two auxiliary blow vents of left and right block is provided with, in order to gain in strength to resist the larger local pressure narrowed due to two auxiliary blow vents; Be provided with short reinforcement (51d) near the back side of the pit of the two auxiliary blow vents (51b) in the left side that the described described left block (51) that narrows two auxiliary blow vents of left and right block is provided with, in order to gain in strength to resist the larger local pressure narrowed due to two auxiliary blow vents; The two auxiliary blow vents (52b) in the right side that the described described right block (52) that narrows two auxiliary blow vents of left and right block is provided with are pits, the two auxiliary blow vents (51b) in the high left side approximately be provided with described left block (g51) of the length and width of its pit are identical, in order to gain in strength, resist the larger local pressure narrowed due to two auxiliary blow vents; The two auxiliary blow vents (52b) in the right side that the described described right block (g52) that narrows two auxiliary blow vents of left and right block is provided with are pits, the two auxiliary blow vents (51b) in the high left side be provided with described left block (51) of the length and width of its pit are identical, length and width on the 1E33 type are high for being not more than 19x7x4.8mm, narrow local volume with convenient, strengthen local air flow pressure and flow velocity and additional turbulence is returned and altered and fall row; The waste gas of engine is directly discharge not, but indirectly discharges by the nearly tool bore (28a) from aluminum pipe after the catalase hush tube of a meter five; Described low emission gasoline brush cutter is characterized in that described cutter is containing with cutting buttress, beating the grass the moving head (54) of wire (54b) in order to long-acting cutting, and with the disc cutterbar (64) of inner sawtooth (642) in case cutter relieving; With and the carburetor of engine establish four bifurcated nozzles (70a) in order to atomization; And described cutter is provided with the outer protective cover (73) be contained on interior protective cover (60) and is provided with its roller length long grass pressing wheel (74) of diameter that equals to beat the grass on its outer protective cover, so that press grass soil moisture conservation and meadow decorative pattern.

2. a kind of low emission gasoline mower according to claim 1, it is characterized in that: the moving head (54) that described cutter is contained with to cut the buttress way that wire (54b) is provided with its a plurality of sharp swords of a plurality of sharp swords (54a) of beating the grass be on wire, with sharp plain chisel, under hammering, to cut to pile up neatly, and described wire is round.

3. the low emission gasoline mower of mower according to claim 1, it is characterized in that: the moving head (54) that described cutter is contained with the buttress wire (54b) of beating the grass of cutting be provided with a plurality of sharp swords (54a), the way of its a plurality of sharp swords is on wire, with the plunger chip die that sharp edge is arranged, under the impact of stamping machine, to cut to pile up neatly, and described wire is flat.

4. the low emission gasoline mower of mower according to claim 1, it is characterized in that: the outer cutting edge (641) of the periphery of 4 cuttves that stretch out that the contained disc cutterbar with inner sawtooth (642) (64) of described cutter is provided with is provided with a plurality of outer sawtooth (64a), and described inner sawtooth (642) also has 4, and its every inner sawtooth (642) is established a plurality of sawtooth.

5. the low emission gasoline mower of mower according to claim 1, it is characterized in that: the outer protective cover (73) of installing on the set interior protective cover of described cutter (60) is provided with installs draw-in groove (73b) and 2 screw hole positions (73a) in order to installation, and be provided with beat the grass spacing (73c) of rope on its outer protective cover (73), and be provided with grass pressing wheel mounting bar (73d) and the arc enclosing bar (73e) for long grass pressing wheel (74) is installed on its outer protective cover (73).

6. a kind of low emission gasoline mower according to claim 1, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is rotating, the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller grows to is 3 times of diameter of its grass pressing wheel less; Spacing (73c) that the described diameter of beating the grass refers to the rope of beating the grass that described its outer protective cover (73) is provided with to the cutter rotary middle spindle apart from being the radius of beating the grass, its 2 times are the described diameter of beating the grass; Its roller length of long grass pressing wheel (74) diameter that equals to beat the grass just in time can be pressed onto the grass just cut, or its roller length is 1.2 times of diameter of beating the grass.

7. a kind of low emission gasoline mower according to claim 1, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is rotating, the axial length of its grass pressing wheel is the long-range diameter that is greater than its grass pressing wheel of roller, that is to say, the axial length of its grass pressing wheel is that roller length is 3 times of diameter of its grass pressing wheel, or more than, so that press the grass soil moisture conservation.

8. a kind of low emission gasoline mower according to claim 1, it is characterized in that: described its roller length equal to beat the grass long grass pressing wheel (74) of diameter is provided with the careless groove of a plurality of pressures (74b), its groove is along its roller length direction or straight groove, or the groove of corrugated bending; And the slot cross-section (74a) of the careless groove of described pressure or square, or semicircular, and the careless groove of described a plurality of pressure is at least 2, skid less so that press grass soil moisture conservation and meadow embossing.

9. low emission gasoline mower according to claim 1, it is characterized in that: the carburetor of described its engine is established four bifurcated nozzles (70a) and is referred to that establishing 4 gaps week along ring on the outlet of the nozzle (70) of the inside of carburetor is four bifurcated nozzles (70a), mixes combustion vapour with improvement and is beneficial to atomization through the fluid state in gap.

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