CN212393254U - All-in-one machine for shearing, crushing and returning green manure to field - Google Patents

Abstract

The utility model discloses a still field all-in-one is smashed in green manure shearing, the device relate to agricultural machine technical field. Comprises a fixed frame body, and the rear end of the fixed frame body is provided with an operation unit. The working unit comprises a mounting plate, a plurality of mounting blocks are arranged on the mounting plate, and a guide cutting plate is arranged on the front side face of each mounting block. The rear side of installation piece has set gradually with installation piece fixed blade of fixed connection and the removal blade through slide and mounting panel sliding connection backward in the past, two the slide between be provided with the connection horizontal pole, the connection horizontal pole on rotate and be provided with the second pivot, just the second pivot pass through the rear end output shaft of drive mechanism and tractor and link to each other. And a driving cam is fixedly arranged on the second rotating shaft, and the driving cam is matched with the first roller and the second roller on the tool rest to realize the left-right reciprocating motion of the movable blade. The equipment can directly shear and crush green manure crops, and improves the working efficiency.

Description

All-in-one machine for shearing, crushing and returning green manure to field

Technical Field

The utility model belongs to the technical field of agricultural machine technique and specifically relates to a still field all-in-one is smashed in green manure shearing.

Background

Some crops, which are referred to as green-fertile crops, can be directly or indirectly compacted into soil for fertilizer by using all or part of the green plant bodies generated during the growth process, and the green plant bodies are referred to as green fertilizers. The green manure crops can provide crop nutrients, and have the effects of increasing the grain yield, promoting the production of high-quality agricultural products, preventing water and soil loss, improving the ecological environment, realizing reasonable land cultivation and the like. The green manure is used as the cleanest low-carbon organic fertilizer source, is not only the essence deposit of five thousand years agricultural cultivation civilization in China, but also is an important ring for implementing the village revivification strategy, deeply promoting the greenization, optimization and specialization development of agriculture and promoting the change of the agriculture from yield increase to quality increase. In 2017, the 'fruit, vegetable and tea organic fertilizer is started to replace a chemical fertilizer action' in the rural part of agriculture, and the 'natural grass growing and green manure' mode is one of 4 alternative technical modes in an orchard; in 2018, the ministry of agricultural rural districts issued "guidance on agricultural green development technology" (2018 and 2030), and "green fertilizer crop production and utilization technology", "efficient production of green fertilizer and fertilizer replacement technology in farmland", and the like, are listed as one of the key integrated demonstration technologies for improving and conserving cultivated land quality and reducing application and enhancing efficiency of fertilizer and pesticide. The 'orchard green manure bean and vegetable crop rotation fertilizing technology' and the 'paddy field winter green manure whole-process mechanized production technology' are listed as 2019 agricultural main promotion technologies in agricultural rural areas.

The technology of crushing and returning green manure refers to the technology of cutting and crushing stems and leaves of green manure crops in the growth period of the green manure crops and turning and pressing the green manure crops to a soil plough layer, and is one of the key technologies for utilizing the green manure. The current operation method is that firstly, green manure crops are harvested, then the green manure crops are crushed, and then the crushed green manure is thrown on the surface of the land and turned over to realize the returning of the green manure. The method needs a plurality of working procedures, has large labor capacity and low efficiency, needs a plurality of sets of agricultural machinery such as mowing machines, straw returning machines, rotary cultivators and the like, and has high production cost.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a still field all-in-one is smashed in green manure shearing, this equipment can directly cut the green manure crop that grows in the field and smash still field, has not only improved work efficiency, and the green manure crop length after cuting the smashing is short and small moreover, is favorable to decomposing in soil.

The utility model provides a technical scheme that its technical problem adopted is:

a green manure cutting, crushing and returning integrated machine comprises a fixed frame body fixedly connected with a tractor body, wherein the rear end of the fixed frame body is provided with an operation unit;

the operation unit comprises a mounting plate, a plurality of mounting blocks are fixedly arranged on the lower side surface of the mounting plate along the left-right direction, the front side surface of each mounting block is a V-shaped surface protruding forwards, and a guide cutting plate matched with the mounting blocks is arranged on the front side surface of each mounting block;

the lower end of the front side surface of the guide cutting plate is provided with a blade part, and the blade parts of the guide cutting plates are sequentially connected to form a continuous cutting blade;

the rear side of the mounting block is sequentially provided with a fixed blade and a movable blade from front to back, the fixed blade is fixedly connected with the mounting block, the upper end of the movable blade penetrates through the mounting plate and extends to the upper part of the mounting plate, the upper end of the movable blade is fixedly provided with a knife rest which is in sliding connection with the mounting plate, and the left end and the right end of the knife rest are respectively provided with a sliding seat which is matched with the knife rest;

a connecting cross rod is fixedly arranged between the two sliding seats, a second rotating shaft is rotatably arranged on the connecting cross rod, a driven bevel gear is fixedly arranged at the upper end of the second rotating shaft, a driving bevel gear meshed with the driven bevel gear is arranged on the fixed frame body, and the driving bevel gear is connected with a rear-end power output shaft of the tractor through a connecting shaft;

the second rotating shaft is located below the connecting cross rod and is fixedly provided with a driving cam, the tool rest is located on the left side and the right side of the driving cam and is provided with a first roller and a second roller respectively, and the driving cam is matched with the first roller and the second roller to realize the left-right reciprocating motion of the movable blade.

Further, the fixed support body and the operation unit are provided with an intermediate support body therebetween, the intermediate support body is in sliding connection with the fixed support body and is fixedly connected with the operation unit, and a driving mechanism used for driving the intermediate support body to move up and down is arranged between the fixed support body and the intermediate support body.

Further, fixed support body on from preceding vertical frame and the vertical frame of second that has set gradually backward, middle support body set up in first vertical frame and the vertical frame of second between, middle support body include the cuboid frame that is formed by twelve boundary beams, just preceding, the back both sides of cuboid frame fixed respectively be provided with first vertical frame's first perpendicular roof beam and the vertical frame's of second perpendicular roof beam matched with sliding sleeve erect, cuboid frame internal rotation be provided with first pivot, the drive bevel gear fixed set up in first pivot on, and be used for connecting the connecting axle of first pivot and tractor rear end output shaft is the universal shaft, the mounting panel with the downside fixed connection of cuboid frame.

Further, actuating mechanism include the drive lead screw, the lower extreme of drive lead screw pass through the bearing assembly with the side of going up of cuboid frame rotates to be connected, fixed support body include the upper portion truss, the upper portion truss on fixed be provided with drive lead screw matched with screw, be provided with on the up end of drive lead screw with drive spanner matched with slot.

Further, the sliding sleeve on be provided with the locating pin, first perpendicular roof beam and second erect the roof beam on from last first locating hole and the second locating hole of down having set gradually, work as the locating pin insert first locating hole in, the operation unit break away from with ground, work as the locating pin insert the second locating hole in, the operation unit insert in the ground.

Further, the top of knife rest is provided with the diaphragm, the preceding, the back both ends of diaphragm are respectively through riser and mounting panel fixed connection, the lower extreme of second pivot pass through the bearing assembly with the diaphragm rotate and be connected.

Further, the side of drive cam include big arc portion, little arc portion and be used for connecting the first straight face portion and the second straight face portion of big arc portion and little arc portion, the centre of a circle coincidence of big arc portion and little arc portion, just the central angle of big arc portion and little arc portion is the opposite vertex angle relation, the radius sum of big arc portion and little arc portion equals the shortest distance between first gyro wheel and the second gyro wheel.

Further, when the large arc-shaped part is in contact with the first roller or the second roller, the movable blade is overlapped with the fixed blade, and the central angle alpha corresponding to the large arc-shaped part and the small arc-shaped part is 100-110 degrees.

Furthermore, a plurality of coulters for plowing soil are arranged on the mounting plate and positioned at the rear side of the movable blade along the left-right direction.

Further, the lower end face of the guide cutting plate is an inclined plane with a low front part and a high rear part.

The utility model has the advantages that:

1. the equipment can directly shear and crush green manure crops growing in the field, and can effectively improve the working efficiency.

2. Through set up the coulter on the mounting panel, can directly plough the green manure after smashing in soil, once only accomplish the smashing still field of green manure, further improve work efficiency, reduce intensity of labour.

3. The green manure crops after being sheared and crushed by the equipment have short length and good fine crushing degree, and are favorable for decomposition in soil.

4. Compared with the existing straw crushing equipment with the crushing function on the market, the straw crushing equipment is simpler in structure, ingenious and low in production cost, and does not need to be fixed on the body of a tractor by the equipment, and the rear end of the tractor is used for outputting power, wherein the equipment needs to be independent of the existing straw crushing and returning equipment with the crushing function and needs to be driven by a driving system, a transmission system and the like.

5. The equipment is convenient to mount and dismount and is favorable for future maintenance of the equipment.

Drawings

FIG. 1 is a schematic perspective view of a shear mill mounted on a tractor;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic perspective view of a shear mill;

FIG. 4 is a right side view of the shear mill;

FIG. 5 is a rear view of the shear mill;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is an exploded view of the shear mill;

FIG. 8 is a schematic perspective view of the fixing frame;

FIG. 9 is a rear view of the intermediate frame body;

FIG. 10 is a right side view of the intermediate frame body;

FIG. 11 is a first schematic perspective view of the operation unit;

FIG. 12 is an enlarged view of portion B of FIG. 11;

FIG. 13 is a second schematic perspective view of the working unit;

FIG. 14 is an enlarged view of the portion C of FIG. 13;

FIG. 15 is an exploded view of the work cell;

FIG. 16 is an enlarged view of portion D of FIG. 15;

FIG. 17 is a schematic view of the connection between the moving blade and the blade holder;

FIG. 18 is an enlarged view of section E of FIG. 17;

FIG. 19 is a first diagram illustrating the cam rotation process;

FIG. 20 is a second view of the cam rotation process;

FIG. 21 is a third view of the cam rotation process;

fig. 22 is a diagram showing a process of cam rotation.

In the figure: 1-tractor, 2-fixed frame body, 211-upper longitudinal beam, 212-upper cross beam, 221-first vertical beam, 222-first connecting beam, 231-second vertical beam, 232-second connecting beam, 24-lower longitudinal beam, 25-third vertical beam, 26-reinforced longitudinal beam, 3-middle frame body, 31-edge beam, 321-first function beam, 322-second function beam, 323-third function beam, 324-fourth function beam, 325-fifth function beam, 326-sixth function beam, 33-sliding sleeve, 34-first rotating shaft, 35-driving bevel gear, 4-universal shaft, 5-operation unit, 51-mounting plate, 511-mounting block, 512-avoiding groove, 52-guiding cutting plate, 521-blade part, 53-fixed blade, 54-moving blade, 55-tool holder, 551-first roller, 552-second roller, 56-slide, 57-connecting cross bar, 58-second rotating shaft, 581-driving cam, 5811-large arc part, 5812-small arc part, 5813-first straight surface part, 5814-second straight surface part, 582-driven bevel gear, 591-transverse plate, 592-vertical plate, 61-driving screw rod, 611-slot and 62-nut.

Detailed Description

For convenience of description, a coordinate system is defined as shown in fig. 1, and the front-back direction is a longitudinal direction, the left-right direction is a transverse direction, and the up-down direction is a vertical direction.

As shown in fig. 1, 3 and 7, the green manure cutting, crushing and returning all-in-one machine comprises a fixed frame body 2 fixedly connected with a tractor 1, wherein a middle frame body 3 is arranged at the rear end of the fixed frame body 2 in a sliding manner, and the sliding frame body can slide up and down relative to the fixed frame body 2. And a driving mechanism for driving the middle frame body 3 to slide up and down is arranged between the fixed frame body 2 and the middle frame body 3. The middle frame body 3 is provided with an operation unit 5 for shearing operation.

As shown in fig. 8, the fixed frame body 2 includes two upper longitudinal beams 211 arranged in parallel, a plurality of upper cross beams 212 are arranged between the two upper longitudinal beams 211 at the front end of the upper longitudinal beams 211 in parallel, and the upper longitudinal beams 211 and the upper cross beams 212 together form an upper truss. The front end of the upper truss is sequentially provided with a first vertical beam 221 and a second vertical beam 231 from front to back, a first connecting beam 222 is arranged between the two first vertical beams 221 and positioned at the lower end of the first vertical beam 221, and the first vertical beam 221 and the first connecting beam 222 jointly form a U-shaped first vertical frame; two second erect between the roof beam 231 be located the lower extreme of second erect roof beam 231 is provided with second tie-beam 232, just second erect roof beam 231 and second tie-beam 232 form the second vertical frame that is the U type jointly. And lower longitudinal beams 24 extending forwards along the longitudinal direction are respectively arranged at the left side and the right side of the lower end of the second vertical frame, and third vertical beams 25 used for connecting the lower longitudinal beams 24 and the upper longitudinal beams 211 are arranged between the lower longitudinal beams 24 and the corresponding upper longitudinal beams 211. The corresponding upper side member 211 is the upper side member 211 located directly above the lower side member 24. The rear end of the upper truss (i.e., the rear end of the upper longitudinal beam 211) and the rear end of the lower longitudinal beam 24 are respectively fixedly connected to the body of the tractor 1.

Further, in order to improve the structural strength of the fixing frame body 2, as shown in fig. 8, reinforcing longitudinal beams 26 are respectively arranged between the first vertical frame and the second vertical frame and located on the left side and the right side of the first vertical frame, the front ends of the reinforcing longitudinal beams 26 are fixedly connected with the second vertical beam 231 in a welding manner, and the rear ends of the reinforcing longitudinal beams 26 are fixedly connected with the first vertical beam 221 in a welding manner.

As shown in fig. 7, the intermediate frame body 3 is disposed between the first vertical frame and the second vertical frame.

As shown in fig. 7, 9 and 10, the middle frame body 3 includes a rectangular parallelepiped frame formed by twelve boundary beams 31, sliding sleeves 33 respectively fixed on the front and rear sides of the rectangular parallelepiped frame and engaged with the first vertical beam 221 and the second vertical beam 231, and the middle frame body 3 can slide up and down relative to the fixed frame body 2 under the guiding action of the sliding sleeves 33.

As shown in fig. 7, functional beams arranged in the transverse direction, the longitudinal direction and/or the vertical direction are respectively arranged in the upper side, the front side and the rear side of the rectangular parallelepiped frame. The functional beams here serve on the one hand to reinforce the structural strength and on the other hand to provide mounting locations and structural support for the mounting of components on the intermediate frame 3. Therefore, the specific structure of the functional beam has no specific requirement, and the functional beam is designed adaptively according to the specific requirement of the mounting component.

As a specific embodiment, as shown in fig. 7, two first function beams 321 extending vertically are disposed between the front upper edge beam 31 and the front lower edge beam 31 of the rectangular parallelepiped frame, and a second function beam 322 extending horizontally is disposed between the two first function beams 321. Two third functional beams 323 extending vertically are arranged between the rear upper edge beam 31 and the rear lower edge beam 31 of the rectangular parallelepiped frame, and a fourth functional beam 324 extending horizontally is arranged between the two third functional beams 323. Two front longitudinally extending fifth function beams 325 are arranged between the front upper edge beam 31 and the rear upper edge beam 31 of the rectangular parallelepiped frame, and two sixth function beams 326 extending in the transverse direction are arranged between the two fifth function beams 325.

As shown in fig. 6 and 10, a first rotating shaft 34 extending in the longitudinal direction is disposed in the rectangular parallelepiped frame, and the front and rear ends of the first rotating shaft 34 are respectively fixedly connected to the upper side surface of the rectangular parallelepiped frame through a bearing assembly, and a drive bevel gear 35 is fixedly disposed on the first rotating shaft 34.

As shown in fig. 4, the rear end of the first rotating shaft 34 is connected to the rear power take-off shaft of the tractor 1 via a cardan shaft 4.

As shown in fig. 6, the driving mechanism includes a driving screw rod 61, a lower end of the driving screw rod 61 is rotatably connected to an upper side surface of the rectangular parallelepiped frame through a bearing assembly, a nut 62 matched with the driving screw rod 61 is fixedly disposed on the upper truss, and as shown in fig. 2, an insertion groove 611 having a hexagonal cross section and matched with a driving wrench is disposed on an upper end surface of the driving screw rod 61. The driving wrench is inserted into the slot 611, and the driving handle is rotated to drive the driving screw rod 61 to rotate, so that the driving screw rod 61 is matched with the screw nut 62 to move up and down, and the middle frame body 3 is driven to move up and down.

Further, because the self-locking function between the driving screw rod 61 and the nut 62 is not reliable enough, the sliding sleeve 33 is provided with a positioning pin (not shown in the figure), the first vertical beam 221 and the second vertical beam 231 are sequentially provided with a first positioning hole (not shown in the figure) and a second positioning hole (not shown in the figure) from top to bottom, when the positioning pin is inserted into the first positioning hole, the operation unit is separated from the ground, and when the positioning pin is inserted into the second positioning hole, the operation unit is inserted into the ground and is in a working state.

As shown in fig. 6 and 7, the working unit includes a horizontally disposed mounting plate 51 disposed below the middle frame body 3, and the edge beam 31 of the lower side surface of the rectangular parallelepiped frame is fixedly connected to the mounting plate by screws, respectively. Preferably, the length and width of the mounting plate 51 correspond to and are equal to the length and width of the rectangular parallelepiped frame, respectively.

As shown in fig. 11, 13 and 15, a plurality of mounting blocks 511 are fixedly arranged on the lower side of the mounting plate 51 in the left-right direction, and the front side of the mounting blocks 511 is a V-shaped surface protruding forward. The mounting block 511 is fixedly connected with the mounting plate 51 by welding. As shown in fig. 14 and 15, a guide cutting plate 52 is disposed on a front side surface of the mounting block 511, and the guide cutting plate 52 is fixedly connected to the mounting block 511 by a screw. The guide cutting plate 52 wraps the left side, the right side and the front side of the mounting block 511, and the front side of the guide cutting plate 52 is matched with the front side of the mounting block 511.

As shown in fig. 4 and 6, the lower end surface of the guide cutting plate 52 is a slope having a lower front and a higher rear, the lower end of the front side surface of the guide cutting plate 52 is provided with a blade 521, and as shown in fig. 5 and 14, the blades 521 of the guide cutting plate 52 are sequentially connected to form a continuous cutting blade.

As shown in fig. 6 and 14, a fixed blade 53 is fixedly disposed on a rear side of the mounting block 511, and the fixed blade 53 is fixedly connected to the mounting block 511 by a screw. Preferably, as shown in fig. 15, the fixed blade 53 mounted on the mounting block 511 is connected to a connecting portion disposed above the fixed blade 53 to form a whole body in a saw-toothed shape, and the saw-toothed shape is a square tooth.

As shown in fig. 6 and 15, a moving blade 54 having the same shape as the fixed blade 53 is disposed below the mounting plate 51 on the rear side of the fixed blade 53, and the front side of the moving blade 54 is attached to the rear side of the fixed blade 53. The upper end of the movable blade 54 passes through the mounting plate 51 and extends to the upper part of the mounting plate 51, and the mounting plate 51 is provided with an avoiding groove 512 for avoiding the movable blade 54. The upper end of the moving blade 54 is fixedly provided with a blade holder 55. As shown in fig. 17, the tool holder 55 includes a sliding rod extending in a transverse direction and having a square cross section, as shown in fig. 11 and 15, sliding seats 56 are respectively provided on the left and right ends of the mounting plate 51 on the upper side surface of the mounting plate 51, and the sliding seats 56 are fixedly connected to the mounting plate 51 by screws. The slide 56 on be provided with along transversely running through the slide 56 of slide, the left and right both ends of slide bar insert respectively the slide in, and can with the slide cooperate for the mounting panel 51 horizontal slip.

As an embodiment, as shown in fig. 17 and 18, the tool holder 55 includes a sliding rod extending in a transverse direction and having a square cross section, clamping plates extending downward are respectively provided at front and rear sides of a middle portion of a lower side surface of the sliding rod, and the moving blade 54 is positioned between the two clamping plates and fixedly connected to the clamping plates by screws.

As shown in fig. 11 and 15, a connecting cross bar 57 is disposed between the two sliding bases 56, and the left and right ends of the connecting cross bar 57 are respectively fixedly connected with the upper side surfaces of the sliding bases 56 through screws. As shown in fig. 6, 12, 15 and 16, a second rotating shaft 58 is provided on the connecting cross bar 57 and the second rotating shaft 58 is rotatably connected with the connecting cross bar 57 through a bearing assembly, a driven bevel gear engaged with the drive bevel gear 35 is fixedly arranged on the second rotating shaft 58 above the connecting cross rod 57, a driving cam 581 is fixedly arranged on the second rotating shaft 58 below the connecting cross rod 57, a first roller 551 and a second roller 552 which are engaged with the driving cam 581 are respectively provided on the upper side surface of the slide bar of the blade holder 55 at the left and right sides of the driving cam 581, and the knife rest 55 drives the moving blade 54 to reciprocate left and right under the action of the driving cam 581, thereby cooperating with the fixed blade 53 to realize the shearing action.

Further, in order to improve the structural stability of the second rotating shaft 58, as shown in fig. 6 and 16, a transverse plate 591 is disposed above the sliding rod of the tool holder 55, a vertical plate 592 extending downward is disposed at each of the front and rear ends of the transverse plate 591, the vertical plate 592 is fixedly connected to the mounting plate 51 by a screw, and the lower end of the second rotating shaft 58 is rotatably connected to the transverse plate 591 by a bearing assembly.

Further, as shown in fig. 19, the side surface of the driving cam 581 includes a large arc portion 5811, a small arc portion 5812, and a first straight surface portion 5813 and a second straight surface portion 5814 for connecting the large arc portion 5811 and the small arc portion 5812, and both ends of the first straight surface portion 5813 and the second straight surface portion 5814 are respectively in smooth transition connection with the large arc portion 5811 and the small arc portion 5812. The centre of a circle coincidence of big arc portion 5811 and little arc portion 5812, just the central angle of big arc portion 5811 and little arc portion 5812 is the opposite vertex angle relation. The sum of the radii of the large arc portion 5811 and the small arc portion 5812 is equal to the shortest distance between the first roller 551 and the second roller 552.

Thus, as shown in fig. 19, when the large arc portion 5811 is in contact with the first roller 551 on the left side, the small arc portion 5812 facilitates the contact of the second roller 552 on the other side, and since the sum of the radii of the large arc portion 5811 and the small arc portion 5812 is equal to the shortest distance between the first roller 551 and the second roller 552, the position of the blade holder 55 during the rotation of the driving cam 581 at this time is maintained until the state shown in fig. 20 is reached. At this time, the driving cam 581 continues to rotate, and the first straight surface portion 5813 presses against the second roller 552, and drives the tool post 55 to move rightward during the rotation until the state shown in fig. 21 is achieved. At this time, the large arc portion 5811 is in contact with the second roller 552, the small arc portion 5812 facilitates the contact of the first roller 551, and similarly, the sum of the radii of the large arc portion 5811 and the small arc portion 5812 is equal to the shortest distance between the first roller 551 and the second roller 552, so that the position of the blade holder 55 is maintained during the rotation of the driving cam 581 until the state shown in fig. 22 is achieved. The driving cam 581 continues to rotate, the first straight portion 5813 presses against the first roller 551, and drives the blade holder 55 to move to the left during rotation until the state shown in fig. 19 is reached. One cycle is completed.

Preferably, when the large arc portion 5811 contacts the first roller 551 or the second roller 552, the moving blade 54 coincides with the fixed blade 53. Preferably, the central angle α of the large arc portion 5811 and the small arc portion 5812 corresponds to 100-110 °.

Thus, the green manure is cut from the root by the cutting action of the blade parts 521 of the guide cutting plates 52, and then the cut green manure crop is inserted into the gap between two adjacent guide cutting plates 52 by the guide action of the guide cutting plates 52, and is input between the square teeth of the fixed blade 53, and then cut and cut into fine pieces by the reciprocating motion of the moving blade 54.

Further, in order to further improve the working efficiency, a plurality of coulters (not shown) for plowing the soil are provided in the left-right direction at the rear side of the movable blade 54 on the mounting plate 51, and the coulters can plow the cut green manure under the soil. Preferably, the coulter is fixedly connected with the mounting plate 51 in a welding mode.

The coulter is a component commonly used in the existing agricultural plowing machine, the structure of the coulter belongs to the prior art, and the specific structure of the coulter is not described in detail.

Claims (10)

1. The utility model provides a field all-in-one is smashed in green manure shearing which characterized in that: the tractor comprises a fixed frame body fixedly connected with a tractor body, wherein the rear end of the fixed frame body is provided with an operation unit;

the operation unit comprises a mounting plate, a plurality of mounting blocks are fixedly arranged on the lower side surface of the mounting plate along the left-right direction, the front side surface of each mounting block is a V-shaped surface protruding forwards, and a guide cutting plate matched with the mounting blocks is arranged on the front side surface of each mounting block;

the lower end of the front side surface of the guide cutting plate is provided with a blade part, and the blade parts of the guide cutting plates are sequentially connected to form a continuous cutting blade;

the rear side of the mounting block is sequentially provided with a fixed blade and a movable blade from front to back, the fixed blade is fixedly connected with the mounting block, the upper end of the movable blade penetrates through the mounting plate and extends to the upper part of the mounting plate, the upper end of the movable blade is fixedly provided with a knife rest which is in sliding connection with the mounting plate, and the left end and the right end of the knife rest are respectively provided with a sliding seat which is matched with the knife rest;

a connecting cross rod is fixedly arranged between the two sliding seats, a second rotating shaft is rotatably arranged on the connecting cross rod, a driven bevel gear is fixedly arranged at the upper end of the second rotating shaft, a driving bevel gear meshed with the driven bevel gear is arranged on the fixed frame body, and the driving bevel gear is connected with a rear-end power output shaft of the tractor through a connecting shaft;

the second rotating shaft is located below the connecting cross rod and is fixedly provided with a driving cam, the tool rest is located on the left side and the right side of the driving cam and is provided with a first roller and a second roller respectively, and the driving cam is matched with the first roller and the second roller to realize the left-right reciprocating motion of the movable blade.

2. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 1, characterized in that: the fixed support body and the operation unit between be provided with middle support body, just middle support body with fixed support body sliding connection, with operation unit fixed connection, the fixed support body and middle support body between be provided with and be used for the drive middle support body actuating mechanism that reciprocates.

3. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 2, characterized in that: fixed support body on from preceding vertical frame and the vertical frame of second that has set gradually backward, middle support body set up in first vertical frame and the vertical frame of second between, middle support body include the cuboid frame that is formed by twelve boundary beams, just preceding, the back both sides of cuboid frame fixed respectively be provided with first vertical frame's first perpendicular roof beam and the vertical frame's of second perpendicular roof beam matched with sliding sleeve erect, cuboid frame internal rotation be provided with first pivot, the drive bevel gear fixed set up in first pivot on, and be used for connecting the connecting axle of first pivot and tractor rear end output shaft is the universal shaft, the mounting panel with the downside fixed connection of cuboid frame.

4. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 3, characterized in that: actuating mechanism include the drive lead screw, the lower extreme of drive lead screw pass through the bearing assembly with the side is rotated on the cuboid frame and is connected, fixed support body include the upper portion truss, the upper portion truss on fixed be provided with drive lead screw matched with screw, be provided with on the up end of drive lead screw with drive spanner matched with slot.

5. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 3, characterized in that: the sliding sleeve on be provided with the locating pin, first perpendicular roof beam and second erect the roof beam and go up from last first locating hole and the second locating hole of down having set gradually, work as the locating pin insert first locating hole in time, the operation unit break away from with ground, work as the locating pin insert the second locating hole in time, the operation unit insert in ground.

6. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 1, characterized in that: the top of knife rest is provided with the diaphragm, the preceding, the back both ends of diaphragm are respectively through riser and mounting panel fixed connection, the lower extreme of second pivot pass through bearing assembly with the diaphragm rotate and be connected.

7. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 1, characterized in that: the side of drive cam include big arc portion, little arc portion and be used for connecting the first straight face portion and the second straight face portion of big arc portion and little arc portion, the centre of a circle coincidence of big arc portion and little arc portion, just the central angle of big arc portion and little arc portion is the opposite vertex angle relation, the radius sum of big arc portion and little arc portion equals the shortest distance between first gyro wheel and the second gyro wheel.

8. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 7, characterized in that: when the large arc-shaped part is contacted with the first roller or the second roller, the movable blade is superposed with the fixed blade, and the central angle alpha corresponding to the large arc-shaped part and the small arc-shaped part is 100-110 degrees.

9. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 1, characterized in that: the mounting plate is provided with a plurality of coulters for plowing soil along the left and right direction at the rear side of the movable blade.

10. The green manure cutting, crushing and returning all-in-one machine as claimed in claim 1, characterized in that: the lower end face of the guide cutting plate is an inclined plane with a low front part and a high back part.

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