CN102577663A

CN102577663A - Loosener

Info

Publication number: CN102577663A
Application number: CN2011100084516A
Authority: CN
Inventors: 张士松; 钟红风; 孙益民
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2011-01-15
Filing date: 2011-01-15
Publication date: 2012-07-18

Abstract

The invention relates to a loosener which comprises a handle, a power output part, a middle shaft, a working assembly and a clamping mechanism, wherein the handle is provided with a switch and is used for being held by a user; the power output part is connected with the handle and comprises a shell, a motor which is accommodated in the shell and is controlled by the switch and a power output shaft driven by the motor to rotate; the middle shaft is driven by the power output shaft to rotate; the working assembly is driven by the middle shaft; the clamping mechanism is used for positioning the working assembly on the middle shaft; the clamping mechanism comprises a limit groove positioned on the middle shaft and a chuck clamped into the limit groove; the clamping mechanism has two states; in a first state, the limit groove and the chuck are combined and the chuck is abutted against the working assembly; and in a second state, the limit groove is separated from the chuck and the chuck can slide relative to the working assembly.

Description

Loosenning tiller

Technical field

The present invention relates to a kind of loosenning tiller.

Background technology

In agricultural production, soil is carried out the step that ploughing and weeding is an indispensability, big machinery capable of using is ploughed deeply soil and the soil block of bulk is pulverized.This operating type is applicable to does not have the situation of plant growth in the soil.

With relevant technology of the present invention is a kind of to planting and the soil of the crop that growing carries out the skill that chesson is pulverized soil block.

Patent document data such as the United States Patent (USP) relevant with the present invention are announced US 4; 678; Disclose a kind of hand-held loosenning tiller for No. 043; This hand-held loosenning tiller comprises a bar portion and the back shaft that is connected with this bar portion pivoting, and this back shaft connects some locating pieces, the ratchet of pulverizing soil of packing into of the space tiltable between this locating piece.In the time of in working order, people's force urges loosenning tiller forward, ratchet rolls along the gap of setting, and the soil on the direct of travel is loosened.

United States Patent (USP) is announced US 4,424, has disclosed another kind of hand-held loosenning tiller No. 869, and this hand-held loosenning tiller is provided with a bolster, and locking has bent axle on this back shaft, is with working head on this bent axle, and people's force urges loosenning tiller carries out operation forward.

Their problem be to use the manpower operation to push the work forward to carry out operating efficiency low for head rotation, labour intensity is big.Should carry out the front and back push pull maneuver simultaneously can fulfil assignment, and can not carry out Fixed Point Operation to specific individual plants or specific region.

United States Patent (USP) is announced US 6,968, has disclosed a kind of Electrodynmic Loosener 906B2 number, and this Electrodynmic Loosener can be utilized its anti-back bar to position and loosen the soil.

The common issue with that exists in the prior art is that the work package dismounting on the loosenning tiller is inconvenient.

Therefore, on the basis that prior art has been carried out concentrating on studies, the inventor provides a kind of loosenning tiller of convenient disassemble and assemble work assembly.

Summary of the invention

The loosenning tiller that the purpose of this invention is to provide a kind of convenient disassemble and assemble work assembly.

For realizing above-mentioned purpose, the present invention provides handle, supplies the user to grip, and said handle is provided with switch;

The power output is connected with said handle, said power output comprises housing, be contained in the housing by the motor of switch control with by the power take-off of motor driven rotation;

Jackshaft has the jackshaft axis, is driven by said power take-off and rotates around the jackshaft axis;

At least one work package; Comprise be connected with said jackshaft and by said jackshaft drive around the working shaft of jackshaft axis rotation be installed in the working head that is used to loosen the soil on the said working shaft; Working shaft has the working shaft axis, working head working shaft rotation relatively;

Said loosenning tiller is provided with work package is positioned the clamp mechanism on the jackshaft; This clamp mechanism comprises stopper slot that is positioned on the jackshaft and the chuck that snaps in stopper slot; This clamp mechanism has two states, and first state is that stopper slot combines with chuck, chuck butt work package; Second state is that stopper slot and chuck break away from, and chuck work package relatively slides.

Further, said chuck comprises inner sleeve and outer sleeve and the limit element that is nested together, and inner sleeve is provided with the passage of accommodating limit element, and limit element is removable in passage, and at the extreme position near jackshaft, limit element snaps in the stopper slot; At the extreme position near outer sleeve, limit element and stopper slot break away from fully, and therefore, the chuck state changes the position that only need change limit element can be realized, easy and simple to handle.

Further; Said stopper slot has a plurality of, arranges vertically, and the spacing between the adjacent stopper slot occupies the integral multiple of jackshaft length for each work package; Therefore, cooperate the work package quantity of chuck loosenning tiller can conveniently increase and be fixed in ad-hoc location.

Further, said stopper slot is the medium axle diameter formation that concaves, and the cross section of this stopper slot is an arc, therefore, and the snapping in and withdraw from easily of the limit element on the chuck.

Further: said outer sleeve is provided with the boss towards inner sleeve, and when chuck restraint of labour assembly moved axially, boss was over against passage; When the relative jackshaft of chuck moved axially, boss left the position over against passage, and therefore, therefore, the change of limit element position is converted into and relies on the move realization of outer sleeve relative to inner sleeve, only needs free-hand operation can realize that operation is convenient.

Further, said chuck also comprises the flexible member of being located between inner sleeve and the outer sleeve, and therefore, clamp mechanism can be accomplished from the released state to the lock-out state automatically, further judicial convenience.

Further, said chuck also comprises stop part, and this stop part is between inner sleeve outer wall and outer sleeve inwall, and flexible member one end is connected to stop part, and therefore, it is simple that the structure of inner sleeve can be made, and is beneficial to and reduces the chuck cost.

Compared with prior art, the present invention has following beneficial effect at least:

Work package is convenient the replacing under the effect of clamp mechanism.

Description of drawings

Below in conjunction with accompanying drawing the present invention is described further.

Fig. 1 is the stereogram of embodiment loosenning tiller of the present invention.

Fig. 2 is the decomposing schematic representation of loosenning tiller shown in Figure 1.

Fig. 3 is the part decomposing schematic representation of loosenning tiller shown in Figure 1.

Fig. 4 is the partial schematic diagram of loosenning tiller shown in Figure 1.

Fig. 5 is the partial schematic diagram of loosenning tiller shown in Figure 1.

Fig. 6 is the partial schematic diagram of loosenning tiller shown in Figure 1.

Fig. 7 is that jackshaft combines with the working shaft end face, the sketch map before the jackshaft Rotate 180 degree.

Fig. 8 is that jackshaft combines with the working shaft end face, the sketch map behind the jackshaft Rotate 180 degree.

Fig. 9 is that jackshaft combines the sketch map before the jackshaft Rotate 180 degree with the work axle key.

Figure 10 is that jackshaft combines the sketch map behind the jackshaft Rotate 180 degree with the work axle key.

Figure 11 is the scope of loosening the soil and the prior art contrast sketch map of working head.

Sketch map when Figure 12 is the clamp mechanism locking.

Figure 13 is that clamp mechanism is in locking and the sketch map during non-locking intermediateness.

Figure 14 is that clamp mechanism is in the sketch map when non-locking.

Figure 15 is a working head concrete structure sketch map.

100 loosenning tillers	54 propeller shaft sleeves	7111 flanges
			1 power brick	55 back shafts	7112 passages
2 handles	6 work packages	7113 grooves
			21 main handles	61 working shafts	712 outer sleeves
22 assist handles	611 installing holes	7121 boss
			3 extension rods	612 draw-in grooves	7122 guiding walls
31 big bar covers	62 working heads	713 flexible members
			32 little bar covers	621 base parts	714 limit elements
33 handles of screwing	622 pawls	715 stop parts
			4 power outputs	623 bearing chambers	8 switches
41 housings	624 steps	81 starting switches
			42 motors	625 draw-in grooves	82 safety switches
421 motor drive shafts	626 clamps	9 running parts
			43 deceleration devices	627 packing rings	91 first bevel gears
44 power take-offs	628 jump rings	92 second bevel gears

5 jackshafts	63 rolling bearings	The A cross-point
			50 joints	64 sealing rings	X jackshaft axis
51 supporting parts	7 clamp mechanism	Y working shaft axis
			52 stopper slots	71 chucks	Z installing hole axis
53 keys	711 inner sleeves

Embodiment

Be described in detail embodiment of the present invention below in conjunction with accompanying drawing.

Referring to figs. 1 through Fig. 6; Loosenning tiller 100 comprises: power source, handle 2, the extension rod 3 that connects handle 2, the power output 4 that is connected with extension rod 3, by the jackshaft 5 of power output 4 drivings, be installed on the work package 6 on the jackshaft 5, and with the clamp mechanism 7 of work package 6 axial limitings.Loosenning tiller 100 whole longitudinally settings.

Loosenning tiller 100 comprises handle 2, is used to supply the user to grip to loosen the soil.Handle 2 comprises main handle 21 and assist handle 22.Main handle 21 is ring-type with assist handle 22, and certainly, shape that other are fit to grip such as tubular also are feasible.Assist handle 22 is located at the place ahead of main handle 21 along loosenning tiller 100 longitudinallies.The plane of symmetry of the plane of symmetry of main handle 21 and assist handle 22 is the angle setting, preferably is arranged to the right angle, and certainly, other position relations also are fine.Assist handle 22 is used to apply the power that lifts upwards or downward pressing force and work package 6 is lifted away from or is pressed in the soil works, or unites with main handle 21 and to be used for promoting forward or pulled backwards loosenning tiller 100 along the direct of travel of loosenning tiller 100.

Handle 2 is provided with switch 8.Switch 8 comprises starting switch 81 and safety switch 82.Concrete, starting switch is put in the inboard of main handle 21, is strip, extends along longitudinally.Safety switch 82 is outstanding outside main handle 21 1 side direction, and its outstanding position is vertical with the bearing of trend of starting switch 81.Only after safety switch 82 was pressed, starting switch 81 just can be unlocked.When needing to start power output 4, the operator needs started by press switch 81 and keeps pressed state, and safety switch 82 gets into lock-out state, and power output 4 is started working.Discharge starting switch 81, starting switch 81 is upspring with safety switch 82 synchronously, and starting switch 81 gets into the state of locking once more, at this moment, can't press starting switch 81, and power output 4 is not worked.

Aforesaid power source is specially a power brick 1, and it is through the dismountable below that is installed in main handle 21 of guide rail structure, for loosenning tiller 100 provides electric power.Be provided with several electrokinetic cells in the power brick, cell types can be NI-G, ni-mh, nickel zinc or lithium battery.According to the different needs of user to battery electric quantity and power output, the capacity of power brick and voltage are provided with multiple.Because it is big that lithium-ion-power cell has energy density, the advantage that discharge power is big, preferably, the battery in the power brick of the present invention is a lithium-ion-power cell, battery parameter is 18V, 1.3Ah or 18V, 2.6Ah.The installation site of power brick 1 is not limited to the below of main handle 21, also can be that other anyly do not influence the position that the operator grips.The mounting means of power brick 1 can be a plug-in or sliding.

Because lithium ion battery wraps in and lost efficacy easily in over-discharge and the overload process or cause danger, loosenning tiller of the present invention also is provided with lithium ion battery protection electronic installation, has overcurrent and puts defencive function with crossing.It is arranged at handle inside and electrically connects with power brick.

Extension rod 3 is between handle 2 and power output 4, and the length of extension rod 3 can be regulated.Length through adjustment extension rod 3 can change the distance between handle 2 and the work package 6, to adapt to different operation person or different use occasions.The people of different heights can prevent that operating personnel are tired so that can through regulating the length of extension rod 3, keep not bending over to loosen the soil according to concrete processing landform.Extension rod 3 comprises a pair of large and small bar cover 31,32 of the different inner diameters that can slide relatively of being nested together and is fixed in the handle 33 of screwing on the little bar cover 32 of less internal diameter.Screwing is provided with screw thread in the handle 33, with the rotation of screwing handle 33, and screw thread and reduce gradually until fitting tightly than gap between the big bar cover 31 of large diameter.Large and small bar cover 31,32 can slide under the state that the handle 33 of screwing loosens relatively, to regulate length; The handle 33 of when suitable length, will screwing is tightened.

Power output 4 is connected with extension rod 3.Concrete, power output 4 comprises: housing 41, be contained in the power take-off 44 of the motor 42 in the housing 41, the deceleration device 43 that is connected with motor 42, connection deceleration device 43.

Housing 41 is formed by the plastic cement injection mo(u)lding, and certainly, other suitable materials are feasible.Housing 41 can be selected the mode of whole shell side formula or half shell fastening according to the condition of producing.Housing 41 can output power and have the parts that rotatablely move in the part 4 and isolate, prevent that in the process of loosening the soil operating personnel's the bottom of s trouser leg is involved in or soil on weeds be entangled to and make the parts that rotatablely move quit work.

Motor 42 is contained in the housing 41, by above-mentioned switch 8 controls and by above-mentioned power brick 1 electric power is provided.Be provided with circuit between power brick 1, switch 8 and the motor 42.Motor 42 extends motor drive shaft 421 along above-mentioned longitudinally.

Deceleration device 43 is the gear drive deceleration device, realizes slowing down through different number of teeth gear meshing.Certainly, deceleration device 43 also can be those skilled in the art the known device that can reduce motor 42 output speeds, like belt drive unit etc., its concrete set-up mode repeats no more at this.

In this embodiment, power take-off 44 is coaxial with motor drive shaft 421.Because motor 42, deceleration device 43, power take-off 44 are arranged along the longitudinally of loosenning tiller 100, so the size of power output 4 longitudinallies is greater than lateral dimension.The size of longitudinally belongs to loosenning tiller 100 length parts, and the length of loosenning tiller 100 partly is adjustable, does not therefore influence the overall dimensions of loosenning tiller 100.This arrangement mode of power output 4 can reduce the space that loosenning tiller 100 occupies to greatest extent, and a kind of miniaturization scheme of loosenning tiller 100 is provided.

Power output 4 drives jackshaft 5 motions through running part 9.Power take-off 44 is vertical with jackshaft 5, and power take-off 44 is arranged along longitudinally.Said running part 9 comprises to be located at first bevel gear 91 on the jackshaft 5 and to be located at second bevel gear 92 on the power take-off 44.First bevel gear 91 and second bevel gear 92 are orthogonal, and the rotatablely moving of axle 44 that output power is delivered to jackshaft 5.

Jackshaft 5 is along extending perpendicular to the direction of motor drive shaft 421 and power take-off 44, and motor drive shaft 421 axis or power take-off 44 axis are symmetrical set basically relatively.Two parts that jackshaft 5 is positioned at power take-off 44 both sides form a supporting part 51 respectively.The length of two supporting parts 51 is equal basically.Supporting part 51 is used for installment work assembly 6.Certainly, supporting part 51 also is feasible in one-sided setting only.The stopper slot 52 that axial distribution has some footpaths to concave on the jackshaft 5 is used for connecting with the chuck 71 of clamp mechanism 7.Jackshaft 5 has the jackshaft axis X, is driven by power take-off 4 and rotates around the jackshaft axis X.Preferably, this stopper slot 52 is an annular groove, and certainly, this stopper slot 52 also can be the groove of other shape.

Preferably, in this embodiment, the identical and set-up mode of the quantity of the work package 6 that is provided with on two supporting parts 51 is with respect to power take-off 44 symmetries, and load that like this can balance loosenning tiller 100 both sides makes the process stabilization that loosens the soil.Certainly, in the narrow zone of loosening the soil, it also is feasible that single work package 6 is set.

Preferably, in this embodiment, each supporting part 51 is provided with the terminal staggered of 6, two work packages 6 of two work packages, has cross-point A; And two work packages 6 are symmetrical with respect to the parallel lines of the power take-off axis of this cross-point of process A, and two work packages 6 one of formation are two waists of the isosceles triangle on base with supporting part 51 in other words.Like this, the soil that terminal staggered a pair of work package 6 receives is cancelled out each other to jackshaft 5 axial reaction forces, prevents that work package 6 from sliding on supporting part 51.

Work package 6 comprises working shaft 61 and working head 62.

Working shaft 61 is cylindrical basically, is installed on the above-mentioned supporting part 51, as the bindiny mechanism of jackshaft 5 and working head 62.

Please with reference to Fig. 7 and Fig. 8, jackshaft 5 is provided with key 53, and working shaft 61 has cylindrical outer surface and two parallel end faces.Columniform outer surface has working shaft axis Y, and working shaft 61 is provided with the installing hole 611 that connects working shaft 61 axial two ends, and installing hole 611 has installing hole axis Z, and said end face and working shaft axis Y acutangulate setting.Its angular range is spent between 45 degree 5, is preferably 15 degree.Installing hole axis Z is vertical with end face.Be that installing hole axis Z and working shaft axis acutangulate setting.Installing hole 611 radially indent forms draw-in groove 612, and jackshaft 5 inserts in the installing hole 611, and the key 53 on the jackshaft 5 embeds in the draw-in groove 612 of installing hole 611.Therefore the rotating tee of jackshaft 5 is crossed the draw-in groove 612 that key 53 is passed to installing hole 611, and working shaft 61 is by jackshaft 5 driven in rotation.The fit structure that the fit structure of this key 53 and draw-in groove can adopt pin and hole, spline etc. to use always substitutes.

Working shaft 61 has other replacement schemes that the easy think of of those skilled in the art reaches with this kind connected mode of jackshaft 5.Please with reference to Fig. 9 and Figure 10, drive a working shaft 61 rotations that are adjacent and be provided with the rotation transferring structure between the working shaft 61 like jackshaft 5, the rotation of jackshaft 5 is delivered to all working shafts 61.Concrete, jackshaft 5 comprises a propeller shaft sleeve 54 and the back shafts 55 that pass from propeller shaft sleeve 54 centres.Two end faces of propeller shaft sleeve 54 are provided with the draw-in groove of protruding trip or depression.Be provided with also on two end faces of working shaft 61 simultaneously that the corresponding draw-in groove that is provided with protruding trip or depression is used for and propeller shaft sleeve or two working shafts between connect transferring power each other.55 supports that provide radially of back shaft prevent that working shaft 61 from moving radially.Like this, working shaft 61 is driven by jackshaft 5 rotations.Can increase the scope of loosening the soil of working head 62 through the relativeness that installing hole axis Z and working shaft axis Y are set.It is effects of bringing through the relativeness of installing hole axis Z and working shaft axis Y that working shaft 61 increases working head 62 scopes of loosening the soil.Preferably, installing hole axis Z and working shaft axis Y angle be 5 spend to 45 the degree

Installing hole axis Z and working shaft axis Y coplane, and angle acutangulates setting.

Jackshaft 5 inserts installing holes 611, drives working shaft 61 around the rotation of jackshaft axis X, because jackshaft 5 directly connects with installing hole 611, and both are cylindrical, and jackshaft axis X and installing hole axis Z are conllinear.Installing hole axis Z and working shaft axis Y coplane angle acutangulate, so the movement locus of working shaft axis Y is a circular cone.The working head 62 that is installed on the working shaft 61 is that center line is done the circular cone swing with the jackshaft axis X.Because of the movement locus of working head 62 is a circular cone, so working head 62 scope of loosening the soil is that the entire length of working head 62 is in the projected length of jackshaft 5 on axially.This length sees Figure 11 for details greater than working head 62 direct length when jackshaft 5 rotates, and increases working shaft 61, and after working head 62 relative working shafts 61 rotations, the scope of loosening the soil d1 is greater than the scope of the loosening the soil d2 and the d3 of back two kinds of rotation modes.

Special, when working head 62 can rotate with respect to working shaft 61 axis, when working head 62 received greater than predetermined big slight drag, rotatablely moving of working head 62 was prevented from, and the part in the working head 62 insertion soil is along jackshaft 5 axial reciprocally swingings.

In another embodiment, installing hole axis Z and working shaft axis Y antarafacial, and angle acutangulates setting.

The working head 62 that is installed on the working shaft 61 is that center line is done the circular cone swing with the jackshaft axis X.Because of the movement locus of working head 62 is a circular cone, so working head 62 scope of loosening the soil is that the entire length of working head 62 is in the projected length of jackshaft 5 on axially.This length is greater than working head 62 direct length when jackshaft 5 rotates.

Special, when working head 62 can rotate with respect to working shaft 61 axis, when working head 62 received the resistance greater than predetermined size, the part in the working head 62 insertion soil was at jackshaft 5 axial reciprocally swingings.

Working head 62 comprises the tubular base part 621 and a plurality of pawls 622 that extend radially outwardly from base part 621 that is set in working shaft 61.Physical dimension ratio according to base part 621 and pawl 622 is different, and the shape of working head 62 has difference.When base part 621 diameters during less than the length of pawl 622, working head 62 is the thorn colyliform.When base part 621 during greater than the length of pawl, the shape approximation of pawl 622 is in sawtooth, and working head 62 is the plate wheel shape.These working head 62 convenient manufacturings simple in structure.Preferably, the diameter of base part 621 is 1: 1 o'clock with the length of pawl ratio, and base part 621 is convenient to be installed and being of convenient length of pawl 622.

The base part 621 of working head 62 is provided with circular step 624, draw-in groove 625, clamp 626, packing ring 627, the jump ring 628 of bearing chamber 623 cylindraceous and catch bearing.Rolling bearing 63 is installed in the bearing chamber 623 and with working shaft 61 and connects, and working head 62 can freely rotate and can not fall to take off around the working shaft axis X like this.In order to improve the bearing capacity of bearing, this this used two rolling bearings.Certainly, as also being fine with one or more bearing, the form of bearing also is not limited to roll, and also can adopt sliding bearing.Because working head is used to loosen the soil; The working environment very severe; Stuck by earth, dust at work in order to prevent working head, the present invention is provided with sealing ring 64 in the base part 621 of working head 62, is used for the bearing chamber 623 of working head 62 isolated with space outerpace.It is worthy of note; In order to reduce cost, the present invention also can adopt packing less bearing chamber 623 structures, and this moment, bearing must adopt sliding bearing; And sliding bearing will adopt big matched in clearance with cooperating of working head 62, and sliding bearing inside will be provided with the dust discharge groove.

Work package 6 relative power take-offs 4 are symmetrical set.And work package 6 is symmetrical set.Specifically, the working shaft 61 of two work packages 6, jackshaft 5 are two waists of isosceles triangle.Two work packages 6 terminal interlaced, particularly, the pawl 622 of the working head 62 of work package 6 is interlaced.Soil when loosening the soil operation like this between the working head 62 of work package 6 also can be arrived by pine.The working shaft 61 of a pair of in other words work package 6 has cylindrical outer surface and both ends of the surface.End face and working shaft 61 axis acutangulate setting.Preferred embodiment, both ends of the surface laterally arrange.In a concrete embodiment, loosenning tiller 100 is provided with paired work package 6.In every pair of work package 6, the 61 adjacent settings of two working shafts, bearing surface is identical with the working shaft axis Y angle of two working shafts 61.It is identical that the diameter of different working axle 61 and end face gradient are set to, and can carry out standardized production, and uniform specification can conveniently be replaced.Working shaft 61 only need keep one section cylinder of same angle inclined cut can form the main part of working shaft 61 when producing, and processing technology is simple.

See also Figure 12 to Figure 15, clamp mechanism 7 is exercisable to make chuck 71 mediate fixing to axial clamped position of axle 5 and the off-position that moves to axial with jackshaft 5.Clamp mechanism 7 comprise be placed on the jackshaft 5 to the chuck 71 of working shaft 61 axial limitings be positioned at the stopper slot 52 on the jackshaft 5.This clamp mechanism 7 has two states, and first state is that stopper slot 52 combines with chuck 71, chuck 71 butt work packages 6; Second state is that stopper slot 52 breaks away from chuck 71, and chuck 71 work package 6 relatively slides.

Stopper slot 52 forms along the radially indent of jackshaft in this embodiment.Circumference along jackshaft 5 is provided with the scope that stopper slot 52 can increase chuck 71 engagings, prevents that the contact portion excessive wear from causing connecting inefficacy.

Special, snapping in and withdraw from for ease of chuck 71, the cross section of this stopper slot 52 is smooth arc.

Special, the number of regulating work package 6 for ease changes loosenning tiller 100 disposable scopes of loosening the soil, and above-mentioned stopper slot 52 has a plurality of along jackshaft 5 axial distribution, and the spacing of this stopper slot 52 is the integral multiple that work package 6 occupies jackshaft 5 length.

Chuck 71 is removable to connect with jackshaft 5.After jackshaft 5 assembling, being loaded on the stopper slot 52 of chuck 71 relative jackshaft 5 axial restraints.Limit the axially movable effect of one or more work packages 6.Jackshaft 5 comprises supporting part 51 and the joint 50 that radially extends.Joint 50 is positioned at the centre position of jackshaft 5.Work package 6 contiguous these joints 50 are provided with.One end of the working shaft 61 of work package 6 is against this joint 50, thereby the axial displacement of work package 6 is limited by part, and an end of the contiguous chuck 71 of working shaft 61 is against chuck 71, thereby the axial displacement of another direction of work package 6 is defined.The both direction of joint 50 and 6 axial displacements of chuck 71 restraint of labour assemblies like this, work package 6 can not move axially.A plurality of work packages 6 against each other can be set between joint 50 and chuck 71.Certainly, adjacent work package 6 also can be isolated from each other through chuck 71.Work package 6 cooperates with stopper slot 52 through chuck 71 can convenient adjustment quantity and installation site.

Chuck 71 comprises inner sleeve 711, outer sleeve 712, flexible member 713, limit element 714 and stop part 715.

Inner sleeve 711 internal diameters are slightly larger than jackshaft 5 diameters, and a side is provided with flange 7111 butt working shafts 61.Also be provided with the passage 7112 that radially connects on the inner sleeve 711.Limit element 714 is accommodated in this passage 7112.Passage 7112 drops out passage 7112 near the diameter of an end of jackshaft 5 diameter less than limit element 714 to prevent limit element 714 fully.The outstanding passage 7112 of limit element 714 parts snaps in the stopper slot 52.Work package 6 is by inner sleeve 711 and limit element 714 axial limitings that are positioned at the passage 7112 of inner sleeve 711 like this.Inner sleeve 711 outsides have outer sleeve 712.The diameter of limit element 714 is greater than the wall thickness of inner sleeve 711, and limit element 714 can partly get into the receiving space between outer sleeve 712 and the inner sleeve 711 like this.Like this, when limit element 714 near the part of jackshaft 5 in the complete admission passage 7112 time, inner sleeve 711 can slide with respect to jackshaft 5 and remove the axial limiting of work packages 6.

Outer sleeve 712 inwalls are provided with boss 7121.Boss one side has inclined-plane 7122.Can realize the locking and unlocking of chuck 71 and jackshaft 5 through the relative slip of inner sleeve 711 and outer sleeve 712.In the concrete embodiment, the boss 7121 of outer sleeve 712 and passage 7112 are over against setting.Boss 7121 limited bit units 714 move radially, and limit element 714 is mediated in the stopper slot 52 of axle on 5 and the passage 7112.Limit element 714 can not move in the receiving space of outer sleeve 712 and inner sleeve 711, thus inner sleeve 711 relative jackshaft 5 axial restraints, and limit element 714 keeps combining with stopper slot 52.At this moment, chuck 71 is in spacing state.Outer sleeve 712 is when spacing disarm state, and boss 7121 moves axially along jackshaft 5, makes inclined-plane 7122 on the boss 7121 away from limit element 714.Passage 7112 has the space that allows limit element 714 parts to get into, and promptly limit element 714 allows limit element 714 to move radially.Moving inner sleeve 711 can move axially chuck 71, thereby makes limit element 714 break away from engagement.At this moment, chuck 71 is in released state.

Through flexible member 713 is set, chuck 71 can be automatically reset to spacing state from spacing disarm state.Concrete, inner sleeve 711 radially indent forms a groove 7113.Stop part 715 snaps in the groove 7113 of inner sleeve 711.Flexible member 713 is arranged at 715 of boss 7121 and stop parts.When making boss 7121 compression elastic elements 713 through outer sleeve 712 application of forces, boss 7121 leaves over against the position of passage 7112, and after this forces, boss 7121 is reset to over against the position of passage 7112 under the effect of flexible member 713.In the embodiment, flexible member 713 is springs, and an end is resisted against boss 7,121 one sides, and the other end is resisted against stop part 715.

Flange 7111 diameters of inner sleeve 711 are greater than the internal diameter of outer sleeve 712, prevent that outer sleeve 712 from deviating from from a side, and flexible member 714 acts on boss 7121 and prevents that outer sleeve 712 breaks away from from opposite side.Special, from spacing disarm state to spacing state-transition the time, being facility extruding limit element 714 admission passages 7112, boss 7121 is provided with guiding walls 7122.

The end face of the working shaft 61 in the limited work package 6 and the distance of stopper slot 52 are more than or equal to the distance of limit element 714 with flange 7111, so that chuck 71 restraint of labour axles 61 move axially.

Above-mentioned limit element 714 can be elements such as ball or pin.

Based on above-mentioned concrete embodiment, loosenning tiller 100 operation principle that is in electric model in the face of loosenning tiller 100 of can under manual or electronic pattern, working down elaborates.

Jackshaft axis X and working shaft axis Y can be positioned at same plane, acutangulate angle.Perhaps installing hole axis Z and working shaft axis Y also can acutangulate angle by antarafacial.Jackshaft 5 inserts installing holes 611, makes jackshaft axis X and installing hole axis Z conllinear, and the assembling of jackshaft 5, working shaft 61 is simple.Because working head 62 can rotate freely around the working shaft axis, the motion of working head 62 is around the revolution of jackshaft axis X with around the compound motion of the rotation of working shaft axis Y.This kind compound motion can be decomposed into along the axial swing of jackshaft 5 and be rotatablely moving of axis with jackshaft 5.Running into the resistance greater than predetermined size when working head 62 inserts soil, as greater than 1 newton's resistance the time, is that rotatablely moving of axis is suppressed with working shaft 61, and only takes place along the axial swing of jackshaft 5.The angle of swing is specially 2 times of angle of installing hole axis Z and working shaft axis Y.Preferably, the angle of installing hole axis Z or jackshaft axis X and working shaft axis Y be 5 spend to 45 the degree, the pendulum angle of working head 62 be 10 spend to 90 the degree.Spend between 45 degree 5, the scope of loosening the soil of loosenning tiller 100 increases obviously.The amplitude of loosening the soil of working head 62 can be regulated with pendulum angle.Special, the angle of installing hole axis Z and jackshaft axis X is 30 to spend between 45 degree, and working head 62 inserts soil easily, and has the bigger power of loosening the soil.

Under the situation of working method for swing of working head 62; Operating personnel's the bottom of s trouser leg or the weeds on the soil can not be entangled on the parts that rotatablely move of loosenning tiller 100 fully; Therefore; The use of this kind loosenning tiller 100 is as safe as a house, and need not shut down to remove and be wound into the weeds on the rotating moving part, and the efficient of loosening the soil is very high.And because working head 62 reciprocally swingings, the soil of working head 62 working regions can be from circumferentially not thrown away by centrifugal, thereby reduce the soil loss of loosening the soil a little and can not throw on one's body the operating personnel.After the operator was fixed on a position with working head, working head 62 swings were loosened the soil, and can realize point-to-point operation.

The operation principle of facing the manual mode of loosenning tiller 100 down elaborates.

Jackshaft axis X and working shaft axis Y can be positioned at same plane, acutangulate angle.Perhaps installing hole axis Z and working shaft axis Y also can acutangulate angle by antarafacial.Because working head 62 is not around the axial revolution of jackshaft 5, so working head 62 only has the rotation around working shaft axis Y.

The dynamical type loosenning tiller of transmission is that power directly drives the working head rotation.And when working head drives structure when rotation relatively, the driving force that working head receives can't be worked by soil resistance.Therefore traditional dynamical type loosenning tiller drives structure and working head are for being fixedly connected.Connect drives structure step by step and be essentially lever, driving force is positioned at the end away from fulcrum, and the reaction force of soil is positioned at the end near fulcrum.If when dynamical type changed manual type into, push-pull effort must overcome the SR of this drives structure.So push-pull effort is very big, even almost can not promote.The loosenning tiller 100 of this embodiment is provided with the working shaft 61 that is therefrom passed by jackshaft 5, and working head 62 is rotatably installed on the working shaft 61, and working shaft axis Y and jackshaft axis X acutangulate angle.When working power, working head 62 can reciprocally swinging; When manual, working head 62 rotates around working shaft axis Y.Realized the combination of dynamical type and manual type.

The loosenning tiller that this embodiment provides can be worked under manual mode, also can under electric model, work, and below introduces respectively.

Under manual mode, loosenning tiller 100 is manually actuated and loosens the soil under the situation that maintained switch 8 breaks off.The power drive system of loosenning tiller 100 is not worked.And because there is output shaft counter motion locking system power drive system inside, when attempting externally rotation work axle 61, output shaft counter motion locking system can be with this kind motion locking.Simultaneously and since working head 62 can be freely around working shaft 61 rotations, so switch 8 breaks off, when promoting the relative soil movement of loosenning tiller 100, working head 62 can rotation and working shaft 61 maintenances are static, loosenning tiller 100 only works as a traditional manual loosenning tiller.

Loosenning tiller 100 concrete operating procedure under manual mode is following:

Push the working head 62 of loosenning tiller 100 to soil;

Keep the switch 8 of loosenning tiller 100 to be in off-state;

On soil, promote loosenning tiller 100, working shaft 61 is static with respect to the housing 41 of loosenning tiller 100, and working head 62 loosens the soil with respect to working shaft axis Y rotation.

Under electric model, 8 conductings of loosenning tiller 100 maintained switch are used motor 42 power drive working shafts 61 to move with working head 62 and are loosened the soil.It should be noted that owing to frictional resistance between working head 62 and the working shaft 61 is less, can rotate freely relatively; When working head 62 receives soil resistance, be easy on direction of rotation that soil conservation is static relatively, and working shaft 61 drove at motor 42 and kept down rotating this moment; And has the acute angle angle between working shaft axis Y and the jackshaft axis X; Therefore, working shaft 61 drives working head 62 along jackshaft 5 axial wobbles, realizes loosening the soil.The reaction force direction of working head 62 swing this moment and jackshaft 5 are parallel and to act on the application of force direction of handle 2 vertical with the operator, so the vibration force direction is also vertical with operator's application of force direction.It is opposite answering the swaying direction of a plurality of working heads 62 simultaneously, and its vibration can be cancelled out each other.It is very little that the operator grips the vibration at place, operates comfortable.

Like this, when the housing 41 of loosenning tiller 100 is constant basically with respect to the soil position, realize that the original place is electronic to loosen the soil that its concrete operating procedure is following:

Push the working head 62 of loosenning tiller 100 to soil;

Keep the switch 8 of loosenning tiller 100 to be in conducting state;

Keep the housing 41 of loosenning tiller 100 constant basically with respect to the position of soil;

Working head 62 direction of rotation under soil resistance keeps static, in motor 42 driving lower edge jackshaft 5 axial wobbles.

When the housing of loosenning tiller 100 41 moves with respect to soil, realized advancing and electronic loosening the soil, its concrete operating procedure is following:

Push the working head 62 of loosenning tiller 100 to soil;

Keep the switch 8 of loosenning tiller 100 to be in conducting state;

Moving loosenning tiller 100 relative to soil makes the housing 41 of loosenning tiller 100 move with respect to soil;

Working head 62 is with the mobile and corresponding rotation of housing 41, in motor 42 driving lower edge jackshaft 5 axial wobbles.

The invention still has multiple concrete embodiment.All employings are equal to replacement or equivalent transformation and all technical schemes of forming all drop within the scope of the invention requirement protection.

Claims

1. loosenning tiller comprises:

Handle supplies the user to grip, and said handle is provided with switch;

It is characterized in that; Said loosenning tiller is provided with work package is positioned the clamp mechanism on the jackshaft; This clamp mechanism comprises stopper slot that is positioned on the jackshaft and the chuck that snaps in stopper slot; This clamp mechanism has two states, and first state is that stopper slot combines with chuck, chuck butt work package; Second state is that stopper slot and chuck break away from, and chuck work package relatively slides.

2. loosenning tiller according to claim 1; It is characterized in that: said chuck comprises inner sleeve and outer sleeve and the limit element that is nested together; Inner sleeve is provided with the passage of accommodating limit element; Limit element is removable in passage, and at the extreme position near jackshaft, limit element snaps in the stopper slot; At the extreme position near outer sleeve, limit element and stopper slot break away from fully.

3. loosenning tiller according to claim 2 is characterized in that: said stopper slot has a plurality of, arranges vertically, and the spacing between the adjacent stopper slot occupies the integral multiple of jackshaft length for each work package.

4. loosenning tiller according to claim 2 is characterized in that: said stopper slot is the medium axle diameter formation that concaves, and the cross section of this stopper slot is an arc.

5. loosenning tiller according to claim 2 is characterized in that: said outer sleeve is provided with the boss towards inner sleeve, and when chuck restraint of labour assembly moved axially, boss was over against passage; When the relative jackshaft of chuck moved axially, boss left the position over against passage.

6. loosenning tiller according to claim 5 is characterized in that: said chuck also comprises the flexible member of being located between inner sleeve and the outer sleeve.

7. loosenning tiller according to claim 6 is characterized in that: said chuck also comprises stop part, and this stop part is between inner sleeve outer wall and outer sleeve inwall, and flexible member one end is connected to stop part.