CN217523155U - Agricultural straw strip tillage mechanical equipment - Google Patents

Abstract

An agricultural straw strip farming mechanical device belongs to the technical field of agricultural machinery. The utility model aims at adjusting part of the mechanisms on the basis of the existing strip tilling machine, thereby perfecting the agricultural straw strip tilling mechanical equipment for strip tilling operation. The utility model discloses to hack roller linking bridge crossbearer adjustment mechanism, subsoiler's adjustment mechanism, install the earthing rake adjusting mechanism the same with hack roller adjustment mechanism structure, divide grass-collecting wheel mechanism to the earthing rake connecting rod with the frame junction and improve. The utility model discloses can straw return to the line and cover and bank up the land fertility, stop the straw and burn, improve the suppression soil moisture conservation effect to planting the ridge, restrain farmland weeds, enrich soil biology; reduce surface soil loss, reduce carbon emission, improve plough layer structure, preserve nutrient and improve soil fertility. Not only maintains the straw covering amount of the ground surface with a larger area, but also solves the problems of seeding quality and seedling growth.

Description

Agricultural straw strip tillage mechanical equipment

Technical Field

The utility model belongs to the technical field of agricultural machine.

Background

Straw returning is increasingly receiving wide attention from all social aspects as one of the most key technical links in the current agricultural planting field, especially in the protective farming technology. The straw returning method which is most easily accepted by farmers is straw returning by row covering. The straw returning, covering, returning, fertilizing and land fertility improving method solves the problem of straw going and putting an end to straw burning, and has important practical significance for developing green and efficient farming technology and systematically solving the actual problems facing agricultural production in northeast regions. Therefore, the rotary tillage technology for covering the deep turning strips by shallow pressing the straws is provided aiming at the problems that the straws are difficult to leave stubbles at high height, small row spacing and windy in spring when being harvested in northeast China at present. Because the operation of the existing strip rotary cultivator often causes the straw to be piled up when the land is uneven, the straw caused by the dragging is unevenly distributed, the popularization of the technology is seriously restricted, meanwhile, the compacting effect of the rear roller is poor, and the compacting and soil moisture preservation effects are difficult to realize. Therefore, the prior strip rotary cultivator cannot meet the technical requirement of straw row-returning shallow-pressing covering strip cultivation. In view of the situation, an agricultural straw strip farming mechanical device is provided.

Disclosure of Invention

The utility model aims at adjusting partial mechanism on the basis of the strip cultivator of the current mainstream to can perfect the agricultural straw strip cultivation mechanical equipment of the operation of strip cultivation more.

The utility model comprises a vehicle connecting mechanism, a frame, depth wheels, a gap stubble breaking cutter, a soil crushing roller connecting bracket cross frame, a subsoiler, two earthing harrow sheets and an earthing harrow sheet connecting rod, wherein a single stress application mechanism is arranged on the vehicle connecting frame and a four-connecting-rod bracket,

(1) hacking roller linking bridge crossbearer adjustment mechanism: the two soil crushing roller connecting support crossbearers are respectively and axially connected to the two soil crushing roller connecting crossbearer fixing frames, the two soil crushing roller connecting crossbearer fixing frames are fixedly arranged at the front end of the machine frame, and the soil crushing roller adjusting mechanism is arranged on the soil crushing roller connecting support crossbearers; hack roller adjustment mechanism: the soil crushing roller adjusting mechanism seat is fixed on a soil crushing roller connecting support cross frame, the soil crushing roller adjusting support rod penetrates through the bottom end of the soil crushing roller adjusting mechanism seat and is fixed on a soil crushing roller connecting cross frame fixing frame, a soil crushing roller adjusting spring is sleeved outside the soil crushing roller adjusting support rod on the soil crushing roller adjusting mechanism seat, the bottom end of the soil crushing roller adjusting spring is propped against the soil crushing roller adjusting mechanism seat, the top end of the soil crushing roller adjusting spring is propped against a soil crushing roller adjusting spring pressing cap, the soil crushing roller adjusting spring pressing cap is sleeved on the soil crushing roller adjusting support rod, and a soil crushing roller adjusting spring pressing nut is installed at the upper end of the soil crushing roller adjusting support rod through thread matching;

(2) adjusting mechanism of subsoiler: the soil covering rake is characterized in that a pull rod connecting piece is fixedly mounted on a rack, the end part of an inner rod of a telescopic pull rod is connected to the top end of the pull rod connecting piece through an end shaft of the inner rod, the end part of an outer rod of the telescopic pull rod is connected to the top end of a triangular adjusting block through an end shaft of the outer rod, the rear angle of the triangular adjusting block is mounted on the rack through an adjusting bolt shaft, the top end of a subsoiler is mounted at the lower end of the triangular adjusting block through a subsoiler mounting hole and is placed between two soil covering rake blades, a limiting block is fixedly mounted on the rack between the rack and the triangular adjusting block, and the triangular adjusting block is arranged between two soil crushing rollers and a cross frame fixing frame;

(3) an earthing rake sheet adjusting mechanism with the same structure as the soil crushing roller adjusting mechanism is arranged at the joint of the earthing rake sheet connecting rod and the rack; the installation structure of the earthing rake sheet adjusting mechanism is as follows: the bottom end of an earthing rake adjusting support rod penetrates through a fixed support plate and is connected with the tail end of an earthing rake connecting rod, the lower end of an earthing rake adjusting spring is propped against the fixed support plate, the upper end of the earthing rake adjusting spring is propped against an earthing rake adjusting spring pressing cap, an earthing rake spring pressing nut is installed on an earthing rake connecting rod extending out of the upper end of the earthing rake adjusting spring pressing cap in a matched mode through threads, the side face of the fixed support plate is fixedly installed on a fixed support, the fixed support is fixedly installed on a rack, an earthing rake connecting rod shaft frame is fixedly installed at the front end of the fixed support, and an earthing rake connecting rod shaft penetrates through the earthing rake connecting rod shaft frame and the earthing rake connecting rod fixing device rack;

(4) divide grass round mechanism: the grass dividing wheel mechanism is inserted on the grass dividing wheel connecting frame through a grass dividing wheel inserting column, the grass dividing wheel connecting frame is fixed below the rack, the grass dividing wheel inserting column and the grass dividing wheel connecting frame are respectively provided with a grass dividing wheel inserting column inserting hole and a grass dividing wheel connecting frame inserting hole which are matched with each other, and the grass dividing wheel inserting column inserting hole and the grass dividing wheel connecting frame inserting hole are inserted and fixed through a grass dividing wheel inserting rod; the grass distributing wheel mounting plate is fixedly mounted below the grass distributing wheel inserting column, the grass distributing wheel mounting plate with mutually staggered end parts on two sides is fixedly mounted on the grass distributing wheel fixing plate, the front grass distributing wheel and the rear grass distributing wheel are mounted at the mutually staggered end parts on two sides of the grass distributing wheel mounting plate respectively through shafts, and grass distributing crushing teeth are arranged on the front grass distributing wheel and the rear grass distributing wheel.

The utility model discloses a carry out the part to current straw strip farming soil preparation combined machine and improve, solved the straw problem of piling up to can realize that the straw returns to go to cover and foster fertile land fertility, improve the purpose of the suppression soil moisture conservation effect in seedling area. Because the disturbed soil is not more than 1/3, the straws cover the corn growth period, the soil moisture is kept, and the temperature of the soil in the sowing zone can be quickly improved; excessive compaction of the soil is avoided; the surface soil loss is reduced; improve the plough layer structure, preserve the nutrients and improve the soil fertility. The technology of the utility model not only keeps the straw coverage of a larger area of the earth surface, but also solves the problems of seeding quality, emergence rate and late seedling condition.

Drawings

FIG. 1 is a schematic side view of the present invention;

fig. 2 is a schematic view of the structure of the three-dimensional viewing angle of the present invention;

FIG. 3 is a partial schematic view of an adjusting mechanism of the subsoiler of the present invention;

FIG. 4 is a side view of the grass separating wheel mechanism of the present invention;

FIG. 5 is a bottom view of the grass-dividing wheel mechanism of the present invention (the grass-dividing wheel fixing plate is removed from the view);

FIG. 6 is a schematic view of the rear perspective structure of the grass separating wheel mechanism of the present invention;

FIG. 7 is a schematic view of the installation structure of the adjusting spring of the soil crushing roller of the present invention;

FIG. 8 is a schematic structural view of a cross-frame adjusting mechanism of the soil crushing roller connecting bracket of the present invention;

fig. 9 is a schematic view of the four groups of the structure of the present invention mounted on the vehicle frame.

Detailed Description

The utility model discloses mainly based on the partial improvement of current straw strip farming soil preparation comprehensive machinery. Therefore, the parts which are not improved are simply explained, and the soil-breaking device comprises a vehicle connecting mechanism, a frame 11, depth wheels 14, a notch stubble-breaking cutter 15, a soil-breaking roller 2, a soil-breaking roller connecting support 1, a soil-breaking roller connecting support cross frame 3, a subsoiler 7, two soil-covering rakes 5 and a soil-covering rake connecting rod 6, wherein a single stress application mechanism 16 is arranged on the vehicle connecting frame 17 and the four-bar-rod support 12 in a lap joint mode.

The vehicle connecting mechanism comprises a four-bar support 12, a single stress application mechanism 16 and a vehicle connecting frame 17, wherein one end of the four-bar support 12 is connected to the frame 11, the other end of the four-bar support is connected to the vehicle connecting frame 17, the single stress application mechanism 16 is arranged on the four-bar support 12 and the vehicle connecting frame 17 (the detailed technical applicant of the part already filed a utility model patent in 2016 (patent number: ZL 201620958971.1), and not described herein, the vehicle connecting frame 17 is used for being connected with the vehicle frame body 18.

The frame 11 is an arched main frame, and all mechanisms are basically installed by taking the main frame as a support.

The installation sequence and the function of the depth wheel 14, the gap stubble breaking cutter 15, the soil crushing roller 2, the soil crushing roller connecting bracket 1, the soil crushing roller connecting bracket cross frame 3, the subsoiler 7, the two soil covering harrow pieces 5 and the soil covering harrow piece connecting rod 6 are the same as the installation sequence and the function of the existing straw strip farming soil preparation combined machine. The frame 11 sequentially comprises the following components according to the dragging direction of the vehicle: depth wheels 14 (adjustment is set according to the depth of whole mechanism), breach stubble-breaking knife 15 (place between two depth wheels 14, and correspond the ridge platform position, can break or break the maize stubble on the ridge platform), the utility model discloses improved branch grass wheel mechanism 13 (the following description), earthing harrow piece 5 (because the ridge platform has been destroyed in the front, so, draw in the soil of scattering both sides again through this structure, general two earthing harrow pieces 5 become the angle installation, like this, the soil that the front end got into is many, the rear side draws in, the rear side is basically close with the ridge platform width, two earthing harrow pieces 5 are installed in frame 11 both sides through respective earthing harrow piece mounting bracket 6 respectively, earthing harrow piece adjustment mechanism 10 is installed to the junction of earthing harrow piece mounting bracket 6 and frame 11 the utility model discloses an improvement, the description is as [0014] (3)), hack roller 2 (through hack roller connecting bracket crossbearer 3, hack roller connecting crossbearer 19 installs on frame 11, hack roller 2 will break some bigger clod, the connecting part of hack roller 2 is the utility model discloses the structure description is the following.

The following describes the improved parts of the present invention in detail with reference to the accompanying drawings:

1. the utility model discloses a 3 adjustment mechanism of hack roller linking bridge crossbearers: the adjusting mechanism is manually adjusted, and after the adjustment is completed, the adjusting mechanism is fixed after being fastened through bolts. Two garrulous soil roller linking bridge crossbearers 3 are hub connection respectively on two garrulous soil roller linking bridge mount 19, and two garrulous soil roller linking bridge crossbearers 3 are through horizontal fixed plate fixed connection, just so can make two garrulous soil roller linking bridge crossbearers 3 synchronous motion, and this motion is through being connected the axle that crossbearer mount 19 is connected with the garrulous soil roller and carrying out the motion as the axle center, loosens the bolt when the adjustment, and the adjustment is accomplished the back, and fastening bolt can. The two soil crushing roller connecting cross frame fixing frames 19 are fixedly arranged at the front end of the machine frame 11, and the soil crushing roller adjusting mechanism 4 is arranged on the soil crushing roller connecting support cross frame 3. The shaft angle between the soil crushing roller connecting bracket cross frame 3 and the soil crushing roller connecting cross frame fixing frame 19 is adjusted through the spring elasticity of the soil crushing roller adjusting mechanism 4.

Hack roller adjustment mechanism 4: a soil crushing roller adjusting mechanism seat 403 is fixed on the soil crushing roller connecting support cross frame 3, a soil crushing roller adjusting support rod 405 penetrates through the bottom end of the soil crushing roller adjusting mechanism seat 403 and is fixed on the soil crushing roller connecting cross frame fixing frame 19, a soil crushing roller adjusting spring 402 is sleeved outside the soil crushing roller adjusting support rod 405 on the soil crushing roller adjusting mechanism seat 403, the bottom end of the soil crushing roller adjusting spring 402 is propped against the soil crushing roller adjusting mechanism seat 403, the top end of the soil crushing roller adjusting spring is propped against a soil crushing roller adjusting spring pressing cap 401, the soil crushing roller adjusting spring pressing cap 401 is sleeved on the soil crushing roller adjusting support rod 405, and the upper end of the soil crushing roller adjusting support rod 405 is provided with a soil crushing roller adjusting spring pressing cap 404 in a threaded matching manner; the work of hack roller adjustment mechanism 4 is accomplished through the screw thread matching rotation on hack roller adjusting spring gland nut 404 and hack roller adjusting strut 405, and hack roller adjusting strut 405 is a mounting, and the bottom is connected crossbearer mount 19 fixed connection with the hack roller, because hack roller adjusting strut 405 passes hack roller adjustment mechanism seat 403, so hack roller adjustment mechanism seat 403 can reciprocate along hack roller adjusting strut 405. When downward adjustment is needed, only the soil crushing roller adjusting spring pressing nut 404 is rotated to move downward, at this time, the soil crushing roller adjusting spring pressing nut 404 presses the soil crushing roller adjusting spring pressing cap 401 to move downward and press the soil crushing roller adjusting spring 402, the lower end of the soil crushing roller adjusting spring 402 presses the soil crushing roller adjusting mechanism seat 403 to move downward, and as the soil crushing roller adjusting mechanism seat 403 is fixedly connected with the soil crushing roller connecting bracket cross frame 3 (at this time, the movement needs to loosen a bolt which is used for shaft-shaped connection between the soil crushing roller connecting bracket cross frame 3 and the soil crushing roller connecting cross frame fixing frame 19 so as to ensure that the soil crushing roller connecting bracket cross frame 3 can rotate along the shaft relative to the soil crushing roller connecting cross frame fixing frame 19), therefore, the soil crushing roller adjusting mechanism seat 403 presses the soil crushing roller connecting bracket cross frame 3 to drive a component thereon to move downward, and when the required height is reached, the rotation of the soil crushing roller adjusting support rod 405 is stopped, and the soil crushing roller connecting bracket cross frame 3 and the soil crushing roller connecting bracket cross frame 19 are fixed by screwing the bolt. Rotating the crusher adjustment arm 405 in the opposite direction upward adjusts the crusher attachment bracket cross-frame 3 to move upward with the components thereon.

(2) Adjusting mechanism 9 of subsoiler 7: a draw bar connector 901 is fixedly arranged on the frame 11, and the draw bar connector 901 is designed to be similar to a triangle, so that the telescopic draw bar 903 is arranged at the top end of the triangle, and the work of other components cannot be influenced when the telescopic draw bar 903 moves telescopically. The end part of an inner rod of the telescopic pull rod 903 is connected to the top end of a pull rod connecting piece 901 through an inner rod end shaft 902, the end part of an outer rod of the telescopic pull rod 903 is connected to the top end of a triangular adjusting block 906 through an outer rod end shaft 904, the rear angle of the triangular adjusting block 906 is installed on a rack 11 through an adjusting bolt shaft 905, the top end of a subsoiler 7 is installed at the lower end of the triangular adjusting block 906 through a subsoiler installing hole 907 and is placed between two soil covering harrow sheets 5, a limiting block 908 is fixedly installed on the rack 11 between the rack 11 and the triangular adjusting block 906, and the triangular adjusting block 906 is arranged between two soil crushing roller connecting cross frame fixing frames 19; the telescopic pull rod 903 can adopt a telescopic adjusting mechanism such as a hydraulic cylinder, a pneumatic cylinder and the like, so that the telescopic pull rod 903 can be stretched under the action of hydraulic pressure or air pressure, two ends of the telescopic pull rod 903 are connected with the outer rod end shaft 904 through the inner rod end shaft 902, and the angle change adjustment of the telescopic pull rod 903 relative to the pull rod connecting piece 901 or the triangular adjusting block 906 in the stretching process can be ensured; the telescopic pull rod 903 can stretch and retract to drive the triangular adjusting block 906 to swing by taking the adjusting bolt shaft 905 as a shaft, during adjustment, the bolt of the adjusting bolt shaft 905 is in a loose state, and after the adjusting bolt shaft is adjusted to a required position, the fastening bolt can ensure that the triangular adjusting block 906 is fastened on the rack 11. The subsoiler 7 is adjustable in its blade tip angle relative to the ground by means of a telescopic rod 903, while the height of the subsoiler 7 is adjusted by means of the position of the subsoiler mounting holes 907, which are longitudinally more numerous than one.

(3) An earthing rake adjusting mechanism 10 with the same structure as the soil crushing roller adjusting mechanism 4 is arranged at the joint of the earthing rake connecting rod 6 and the frame 11; because earthing rake piece 5 has two, installs respectively on two earthing rake piece connecting rods 6, and earthing rake piece 5 has similar structure with earthing rake piece connecting rod 6's connection structure in present equipment, does not do too much here and describe again, and earthing rake piece connecting rod 6 is connected and cooperates earthing rake piece adjustment mechanism 10 with frame 11's structure is the utility model discloses the modified part. The overall structure of the soil covering rake adjusting mechanism 10 is basically the same as that of the soil crushing roller adjusting mechanism 4, that is, the soil covering rake adjusting strut 1003, the soil covering rake spring pressing nut 1004, the soil covering rake spring pressing cap 1002 and the soil covering rake adjusting spring 1001 which are comprised in the soil covering rake adjusting mechanism 10 have the same functions and structures as the corresponding parts on the soil crushing roller adjusting mechanism 4. The difference between the general structure of the soil covering rake adjusting mechanism 10 and the soil crushing roller adjusting mechanism 4 is that the installation and working modes and structures are different, and the concrete installation and working structures of the soil covering rake adjusting mechanism 10 are as follows: the bottom end of a soil covering rake sheet adjusting support 1003 penetrates through a fixed support plate 1006 and is connected with the tail end of a soil covering rake sheet connecting rod 6, the lower end of a soil covering rake sheet adjusting spring 1001 is abutted on the fixed support plate 1006, the upper end of the soil covering rake sheet adjusting spring is abutted on a soil covering rake sheet pressing cap 1002, a soil covering rake sheet spring pressing nut 1004 is mounted on the soil covering rake sheet connecting rod 6 extending out of the upper end of the soil covering rake sheet adjusting spring pressing cap 1002 in a matching mode through threads, the side face of the fixed support plate 1006 is fixedly mounted on a fixed support 1007, the fixed support 1007 is fixedly mounted on a rack 11, a soil covering rake sheet connecting rod shaft frame 1008 is fixedly mounted at the front end of the fixed support 1007, and a soil covering rake sheet connecting rod 1005 penetrates through the soil covering rake sheet connecting rod shaft frame 1008 and the soil covering rake sheet connecting rod 6 and is fixedly mounted on the rack 11; the adjusting process comprises the following steps: the soil covering rake blade adjusting mechanism 10 is designed for adjusting the distance between the soil covering rake blade 5 and the ground, when upward adjustment is required (i.e. when the distance between the soil covering rake blade 5 and the ground is increased), the soil covering rake blade spring pressing nut 1004 is rotated downward, the soil covering rake blade adjusting spring pressing cap 1002 is pressed to move downward due to the threaded matching with the soil covering rake blade adjusting strut 1003, the soil covering rake blade adjusting spring 1001 is pressed to compress, the soil covering rake blade adjusting strut 1003 is not moved at this time, but the fixed support plate 1006 also moves downward under the pressure of the soil covering rake blade adjusting spring 1001, so that the end of the soil covering rake blade connecting rod 6 is pushed downward, when the tail end of the soil covering rake connecting rod 6 moves downward, the front end of the soil covering rake blade connecting rod 6 is lifted upward by using the soil covering rake blade connecting rod shaft as an axis, and stops after reaching a required height, the fastening bolt of the soil covering rake blade connecting rod shaft is in a loose state, and after stopping, the fastening bolt 1005 of the soil covering rake blade connecting rod is fastened and fixed, so that the soil covering rake blade 1005 is prevented from continuing to rotate along the soil covering rod connecting rod shaft 1005, and the soil covering rod 1005 is fastened by the soil covering adjusting mechanism 1005. The distance between the soil covering harrow plate 5 and the ground can be reduced by reverse operation.

(4) Grass separating wheel mechanism 13: the grass dividing wheel mechanism 13 is inserted in the grass dividing wheel connecting frame 8 through a grass dividing wheel inserting column 1303, the grass dividing wheel connecting frame 8 is fixed below the rack 11, the grass dividing wheel inserting column 1303 and the grass dividing wheel connecting frame 8 are respectively provided with a grass dividing wheel inserting column inserting hole 1304 and a grass dividing wheel connecting frame inserting hole 1302 which are matched with each other, and the grass dividing wheel inserting column inserting hole 1304 and the grass dividing wheel connecting frame inserting hole 1302 are inserted and fixed through a grass dividing wheel inserting rod 1301; a grass dividing wheel mounting plate 1308 is fixedly mounted below the grass dividing wheel inserting column 1303, a grass dividing wheel mounting plate 1307 with mutually staggered end parts at two sides is fixedly mounted on the grass dividing wheel mounting plate 1308, a front grass dividing wheel 1305 and a rear grass dividing wheel 1306 are respectively mounted at the mutually staggered end parts at two sides of the grass dividing wheel mounting plate 1307 through shafts, and grass dividing crushing teeth 1309 are arranged on the front grass dividing wheel 1305 and the rear grass dividing wheel 1306. The existing combined machine is also provided with two grass dividing wheels, but the two grass dividing wheels are basically arranged on the same plane, and even if the existing grass dividing wheels are provided with teeth, bent teeth extend outwards on a circular disc. The improved structure of the utility model is two points, the first is the installation mode of the grass separating wheel, and the second is the flat tooth of the grass separating wheel, so-called flat tooth, namely the tooth and the wheel body are on the same plane.

Firstly, the installation mode of the grass dividing wheel is as follows: the two grass dividing wheels are not arranged on the same plane and are arranged in staggered positions from front to back, the staggered arrangement is realized through staggered arrangement of two ends of the grass dividing wheel mounting plate 1307, therefore, the two grass dividing wheel mounting positions form a front-back staggered form, the front-back staggered form is determined through staggered bending of the end parts of the grass dividing wheel mounting plate 1307, the grass dividing wheel mounting plate 1307 is connected with the front grass dividing wheel 1305 and the rear grass dividing wheel 1306 in an axial form, and the front grass dividing wheel 1305 and the rear grass dividing wheel 1306 can rotate on the grass dividing wheel mounting plate 1307. Due to the front and back staggered form, the problem of rotary locking cannot occur when the two sides work.

Secondly, the flat teeth of the grass dividing wheel: the flat teeth are the teeth on the wheel and the wheel body are on the same plane, so that the processing is very easy, and the processing is not extremely complicated like the existing bent teeth.

The height lifting arrangement of the grass separating wheel mechanism 13 is fixed by inserting the grass separating wheel inserting column inserting holes 1304 on the grass separating wheel inserting columns 1303 and the grass separating wheel connecting frame inserting holes 1302 on the grass separating wheel connecting frames 8 correspondingly to the grass separating wheel inserting rods 1301, and a plurality of grass separating wheel inserting column inserting holes 1304 and a plurality of grass separating wheel connecting frame inserting holes 1302 are longitudinally arranged.

Claims (1)

1. The utility model provides an agricultural straw strip farming mechanical equipment, includes vehicle coupling mechanism, frame (11), gauge wheel (14), breach stubble cutter (15), hack roller (2), hack roller linking bridge (1), hack roller linking bridge crossbearer (3), subsoiler (7), two earthing harrow pieces (5), earthing harrow piece connecting rod (6), the overlap joint has monomer additional force mechanism (16) on vehicle coupling bridge (17) and four-bar linkage support (12), its characterized in that:

(1) hack roller linking bridge crossbearer (3) adjustment mechanism: the two soil crushing roller connecting support crossbearers (3) are respectively and pivotally connected to two soil crushing roller connecting crossbearer fixing frames (19), the two soil crushing roller connecting crossbearer fixing frames (19) are fixedly arranged at the front end of the machine frame (11), and the soil crushing roller adjusting mechanisms (4) are arranged on the soil crushing roller connecting support crossbearers (3); soil crushing roller adjusting mechanism (4): a soil crushing roller adjusting mechanism seat (403) is fixed on a soil crushing roller connecting support cross frame (3), a soil crushing roller adjusting support rod (405) penetrates through the bottom end of the soil crushing roller adjusting mechanism seat (403) and is fixed on a soil crushing roller connecting cross frame fixing frame (19), a soil crushing roller adjusting spring (402) is sleeved outside the soil crushing roller adjusting support rod (405), the bottom end of the soil crushing roller adjusting spring (402) is propped against the soil crushing roller adjusting mechanism seat (403), the top end of the soil crushing roller adjusting spring is propped against a soil crushing roller adjusting spring pressing cap (401), the soil crushing roller adjusting spring pressing cap (401) is sleeved on the soil crushing roller adjusting support rod (405), and a soil crushing roller adjusting spring pressing nut (404) is installed at the upper end of the soil crushing roller adjusting support rod (405) in a threaded matching manner;

(2) the adjusting mechanism of the subsoiler (7): a pull rod connecting piece (901) is fixedly installed on a rack (11), the end part of an inner rod of a telescopic pull rod (903) is connected to the top end of the pull rod connecting piece (901) through an inner rod end shaft (902), the end part of an outer rod of the telescopic pull rod (903) is connected to the top end of a triangular adjusting block (906) through an outer rod end shaft (904), the rear angle of the triangular adjusting block (906) is installed on the rack (11) through an adjusting bolt shaft (905), the top end of a subsoiler (7) is installed at the lower end of the triangular adjusting block (906) through a subsoiler installing hole (907) and is placed between two soil covering harrow plates (5), a limiting block (908) is fixedly installed on the rack (11) between the rack (11) and the triangular adjusting block (906), and the triangular adjusting block (906) is arranged between two soil crushing rollers and a cross rack fixing frame (19);

(3) an earthing rake sheet adjusting mechanism (10) with the same structure as the soil crushing roller adjusting mechanism (4) is arranged at the joint of the earthing rake sheet connecting rod (6) and the rack (11); the installation structure of the soil covering rake sheet adjusting mechanism (10) is as follows: the bottom end of an earthing rake adjusting support rod (1003) penetrates through a fixed support plate (1006) and is connected with the tail end of an earthing rake connecting rod (6), the lower end of an earthing rake adjusting spring (1001) is propped against the fixed support plate (1006), the upper end of the earthing rake adjusting spring is propped against an earthing rake adjusting spring pressing cap (1002), an earthing rake spring pressing nut (1004) is installed on the earthing rake connecting rod (6) extending out of the upper end of the earthing rake adjusting spring pressing cap (1002) in a threaded matching mode, the side face of the fixed support plate (1006) is fixedly installed on a fixed support (1007), the fixed support (1007) is fixedly installed on a rack (11), an earthing rake connecting rod shaft frame (1008) is fixedly installed at the front end of the fixed support (1007), and an earthing rake connecting rod shaft (1005) penetrates through the earthing rake connecting rod shaft frame (1008) and the earthing rake connecting rod (6) to be fixed on the rack (11);

(4) grass dividing wheel mechanism (13): the grass dividing wheel mechanism (13) is inserted into the grass dividing wheel connecting frame (8) through a grass dividing wheel inserting column (1303), the grass dividing wheel connecting frame (8) is fixed below the rack (11), the grass dividing wheel inserting column (1303) and the grass dividing wheel connecting frame (8) are respectively provided with a grass dividing wheel inserting column inserting hole (1304) and a grass dividing wheel connecting frame inserting hole (1302) which are matched with each other, and the grass dividing wheel inserting column inserting hole (1304) and the grass dividing wheel connecting frame inserting hole (1302) are inserted and fixed through a grass dividing wheel inserting rod (1301); a grass dividing wheel fixing plate (1308) is fixedly installed below the grass dividing wheel inserting column (1303), a grass dividing wheel mounting plate (1307) with mutually staggered end parts at two sides is fixedly installed on the grass dividing wheel fixing plate (1308), a front grass dividing wheel (1305) and a rear grass dividing wheel (1306) are installed at the mutually staggered end parts at two sides of the grass dividing wheel mounting plate (1307) through shafts respectively, and grass dividing crushing teeth (1309) are arranged on the front grass dividing wheel (1305) and the rear grass dividing wheel (1306).

Images