A crop tiller

Abstract

The present invention discloses a crop tiller, which relates to the technical field of agricultural machinery, and comprises a tiller unit on the tiller, wherein a top plate is provided at the top of the front side of the tiller unit, an upper support plate is provided below the top plate, a folding device is provided at the bottom of the upper support plate, a cylinder is provided on the folding device, an opening and closing support device is provided inside the cylinder, the opening and closing support device runs through the folding device, an aerodynamic device is provided on the folding device, and the aerodynamic device is connected to the opening and closing support device. Beneficial effect: When the tiller turns forward during the tilling process, the folding device and the opening and closing support device at the front end effectively provide support stability.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a crop tiller. Background Art

[0002] In agricultural planting, the soil needs to be turned over before planting. After the soil is loosened, the saplings or seeds to be planted are placed in the turned over soil. However, in the process of turning over the soil, improper operation can easily cause the vehicle to overturn or lose its handlebars due to the weight of the front end. Once the tiller fails, the whole vehicle will easily tilt, and at the same time, it will rush forward without anyone controlling it, which will cause great safety hazards. Summary of the invention

[0003] The technical task of the present invention is to provide a crop tiller to solve the above problems.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A crop tiller comprises a tilling unit arranged on a tiller body, a top plate being provided on the front top of the tiller unit, an upper support plate being provided below the top plate, a folding device being provided at the bottom of the upper support plate, a cylinder being provided on the folding device, an opening and closing support device being provided inside the cylinder, the opening and closing support device passing through the folding device, an aerodynamic device being provided on the folding device, and the aerodynamic device being connected to the opening and closing support device.

[0006] Preferably, the folding device includes a lower support plate, and cylinders are respectively provided on the corresponding side edges on both sides of the top of the lower support plate, and matching gas rods are provided in the cylinders, and clamps are provided on the side of the gas rods away from the cylinders, and bent plates are provided in the clamps, and connecting shafts are inserted on the bent plates, and corner plates are provided at both ends of the connecting shafts, and the tops of the corner plates are respectively fixed at the two diagonal ends of the bottom of the upper support plate.

[0007] Preferably, a group of corner plates 2 are provided at the other two diagonal ends of the bottom of the upper support plate, the lower support plate is fixed on the inner side edges of corner plate 1 and corner plate 2, a connecting shaft 2 is provided between the bottoms of corner plates 2, a bent plate 2 is provided on the connecting shaft 2, a bent plate 1 is provided on the connecting shaft 1, a cross column is provided between the bottoms of the corresponding sides of bent plate 1 and bent plate 2, a plurality of bent pipes are provided on the cross column, and a shovel plate is provided between the bottoms of the bent pipes.

[0008] Preferably, the aerodynamic device includes an air tank, a turbine group, a generator and a motor. The air tank is connected to the turbine group through a pipeline, the turbine group is connected to the generator, and the generator is connected to the motor. Two bellows are connected to the air tank, and the bottoms of the bellows are respectively fixed to the outside of the top of the cross column.

[0009] Preferably, a plurality of turbines are provided in the turbine group, and the turbines include a rotating shaft, a turntable and a plurality of turbine blades. The rotating shaft runs across the turbine group, the turntable is sleeved on the rotating shaft, and a plurality of turbine blades are provided on the surface of the turntable. The right end of the rotating shaft passes through the turbine group and is connected to the shaft of the generator. The generator is connected to the motor through the motor shaft, and the motor is a bidirectional motor.

[0010] Preferably, a belt shaft is provided on the other side of the motor, a pulley 1 is provided on the end of the belt shaft away from the motor, a belt is provided on the pulley 1, a pulley 2 is provided on the other side of the belt, a coupler is connected to the left side of the pulley 2, a gear shaft 2 is provided on the side of the coupler away from the pulley 2, support plates are provided on both sides of the gear shaft 2, a pad is provided between the bottoms of the support plates, and the bottom of the pad is fixed to the upper support plate.

[0011] Preferably, the opening and closing support device comprises a disc, the disc is located in the cylinder, the top of the cylinder is fixed to the bottom center of the lower support plate, the middle of the disc is provided with a middle hole, a lifting column is provided in the middle hole, a middle rack is provided on the top of the lifting column, the middle rack passes through the cylinder, the lower support plate and the upper support plate and extends to the top of the upper support plate, a plurality of connecting plates are evenly provided on the lower surface of the lifting column, the outer ends of the connecting plates are provided with a slide plate 1, and the outer bottom of the slide plate 1 is A U-shaped plate 1 is provided, a group of driving rods 1 are provided in the U-shaped groove of the U-shaped plate 1, a U-shaped plate 2 is provided at the other end of the driving rod 1, and a conical block 1 is provided on the outside of the U-shaped plate 2; a slide plate 2 is provided at the bottom of the disc between the adjacent connecting plates, a U-shaped plate 3 is provided at the bottom of the outer side of the slide plate 2, a group of driving rods 2 are provided in the U-shaped groove of the U-shaped plate 3, a U-shaped plate 4 is provided at the other end of the driving rod 2, and a conical block 2 is provided on the outside of the U-shaped plate 4, and the conical block 2 is embedded between the adjacent conical blocks 1.

[0012] Preferably, side racks are provided on both sides of the top of the disc, and the side racks penetrate the cylinder, the lower support plate and the upper support plate and extend to the top of the upper support plate. Return springs are provided on the tops of the side racks and the middle rack, and the tops of the return springs are respectively fixed to the top plates. A gear one meshing with the middle rack is provided on one side of the middle rack, a gear shaft one is inserted through the middle of the gear one, and both ends of the gear shaft one respectively penetrate the upper parts of the support plates on both sides, a gear three meshing with the gear one is provided below the gear one, and the gear three is sleeved on the gear shaft two, and both sides of the gear three are located on the gear shaft two and are provided with gears two meshing with the side racks.

[0013] Preferably, a cavity-structured slide column is provided at the lower center of the cylinder, a plurality of slide grooves are provided on the side of the slide column, the slide plate 1 and the slide plate 2 are inserted into the slide groove in a staggered manner, and arc plates are provided on the outer sides of the bottoms of the conical block 2 and the conical block 1.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. When the tiller is in the tilling operation, if it tilts or there is an operating error, when the tiller is out of hand, the tilling unit in the front part will tilt forward under gravity due to its own weight. At this time, the folding device touches the ground and provides a certain degree of support. At the same time, a circle formed by multiple conical blocks presses the ground to support the front end of the entire tiller, effectively avoiding the tiller tipping forward and rushing around after failure.

[0016] 2. When the folding device keeps moving under the cooperation of the cylinder and the air rod, the bellows connected on the horizontal columns on both sides will produce compression and tension movements, and air power is generated inside the bellows. After entering the air storage tank for storage, it enters the turbine group and drives several turbines to rotate. The shaft will drive the generator to run, and the mechanical energy generated by the generator will drive the motor to run. After the motor runs, it will drive the pulley to rotate, so that through the operation of the aerodynamic device, the different racks on the opening and closing support device are prompted to achieve up and down lifting movements. At this time, the arc plate on the bottom of the conical block will further loosen the soil after turning over. When the tiller fails, after the folding device is returned and maintains its original state, the shovel plates on both sides will support the ground, and the aerodynamic device will stop the movement of the opening and closing support device without being driven by power. At this time, the arc plate will be inserted into the soil, thereby providing good support and stability for the front end of the entire tiller, effectively preventing the phenomenon of tipping over.

[0017] 3. The gathering device, the aerodynamic device and the opening and closing support device are linked structures. After the gathering device gathers and loosens the soil, the generated aerodynamic force drives the opening and closing support device to operate, so that the arc plate continuously inserts the gathered and turned over soil, and then the soil turning unit at the rear effectively turns the soil again, thereby improving the soil turning effect. When forward turning occurs during the soil turning process, the gathering device and the opening and closing support device at the front end effectively provide support stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic diagram of the front end structure of a soil turning unit according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the aerodynamic device end according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the gear end structure according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the combined structure of the opening and closing support device according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the unfolded structure of the opening and closing support device according to an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of a tapered block end structure according to an embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of the structure of a folding device end according to an embodiment of the present invention;

[0026] Figure 8 is based on Figure 7 A partial enlarged view of middle A;

[0027] Fig. 9 2 is a schematic diagram of the lower support plate end structure according to an embodiment of the present invention.

[0028] In the figure:

[0029] 1. Soil turning unit; 2. Top plate; 3. Upper support plate; 4. Cylinder; 5. Lower support plate; 6. Cylinder; 7. Gas rod; 8. Clamp; 9. Bending plate 1; 10. Connecting shaft 1; 11. Corner plate 1; 12. Corner plate 2; 13. Connecting shaft 2; 14. Bending plate 2; 15. Arc plate; 16. Horizontal column; 17. Bend pipe; 18. Shovel plate; 19. Gas storage tank; 20. Turbine group; 21. Generator; 22. Motor; 23. Pipeline; 24. Bellows; 25. Rotating shaft; 26. Turntable; 27. Turbine leaf; 28. Pulley 1; 29. ​​Belt; 30. Pulley 2; 31. Coupler; 32. Gear shaft 2; 33. Support plate; 34. Pad; 35. Disc; 36. Middle hole; 37. Lifting column; 38. Middle rack; 39. Connecting plate; 40. Slide plate 1; 41. U-shaped plate 1; 42. Drive rod 1; 43. U-shaped plate 2; 44. Conical block 1; 45. Slide plate 2; 46. U-shaped plate 3; 47. Drive rod 2; 48. U-shaped plate 4; 49. Conical block 2; 50. Side rack; 51. Return spring; 52. Gear 1; 53. Gear shaft 1; 54. Gear 3; 55. Gear 2; 56. Slide column; 57. Slide. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] According to an embodiment of the present invention, Figure 1-9 Shown in:

[0033] The present invention provides a crop tiller, comprising a tilling unit 1 arranged on a tiller body (the tiller body is an existing tiller body structure), a top plate 2 is provided on the front top of the tiller unit 1, an upper support plate 3 is provided below the top plate 2, a folding device is provided at the bottom of the upper support plate 3, a cylinder 4 is provided on the folding device, an opening and closing support device is provided inside the cylinder 4, the opening and closing support device runs through the folding device, an aerodynamic device is provided on the folding device, and the aerodynamic device is connected to the opening and closing support device.

[0034] Wherein, the folding device includes a lower support plate 5, and cylinders 6 are respectively provided on the corresponding side edges on both sides of the top of the lower support plate 5, and a matching gas rod 7 is provided in the cylinder 6, and a clamping block 8 is provided on the side of the gas rod 7 away from the cylinder 6, and a bent plate 9 is provided in the clamping block 8, and a connecting shaft 10 is inserted on the bent plate 9, and corner plates 11 are provided at both ends of the connecting shaft 10, and the tops of the corner plates 11 are respectively fixed at the two diagonal ends of the bottom of the upper support plate 3, and the bottom of the upper support plate 3 A group of corner plates 12 are provided at the other two diagonal ends, the lower support plate 5 is fixed on the inner sides of the corner plates 11 and 12, a connecting shaft 13 is provided between the bottoms of the corner plates 12, a bent plate 14 is provided on the connecting shaft 13, a bent plate 9 is provided on the connecting shaft 10, a horizontal column 16 is provided between the bottoms of the corresponding sides of the bent plate 9 and the bent plate 14, a plurality of bent pipes 17 are provided on the horizontal column 16, and a shovel plate 18 is provided between the bottoms of the bent pipes 17.

[0035] In addition, the aerodynamic device includes an air tank 19, a turbine group 20, a generator 21 and a motor 22. The air tank 19 is connected to the turbine group 20 through a pipeline 23, the turbine group 20 is connected to the generator 21, the generator 21 is connected to the motor 22, the air tank 19 is connected to two bellows 24, the bottoms of the bellows 24 are respectively fixed to the top outer side of the cross column 16, a plurality of turbines are arranged in the turbine group 20, the turbine includes a rotating shaft 25, a rotating disk 26 and a plurality of turbine blades 27, the rotating shaft 25 crosses the turbine group 20, the rotating disk 26 is sleeved on the rotating shaft 25, a plurality of turbine blades 27 are arranged on the surface of the rotating disk 26, and the rotating shaft 2 5, the right end of the turbine group 20 passes through the shaft of the generator 21, the generator 21 is connected to the motor 22 through the motor shaft, the motor 22 is a bidirectional motor, the other side of the motor 22 is provided with a belt shaft, the end of the belt shaft away from the motor 22 is provided with a pulley 1 28, the pulley 1 28 is provided with a belt 29, the other side of the belt 29 is provided with a pulley 2 30, the left side of the pulley 2 30 is connected with a coupler 31, the side of the coupler 31 away from the pulley 2 30 is provided with a gear shaft 2 32, the gear shaft 2 32 is provided with support plates 33 on both sides, the bottom of the support plates 33 is provided with a pad 34, the bottom of the pad 34 is fixed to the upper support plate 3.

[0036] In addition, the opening and closing support device includes a disc 35, the disc 35 is located in the cylinder 4, the top of the cylinder 4 is fixed to the bottom center of the lower support plate 5, the middle of the disc 35 is provided with a middle hole 36, a lifting column 37 is provided in the middle hole 36, a middle rack 38 is provided on the top of the lifting column 37, the middle rack 38 runs through the cylinder 4, the lower support plate 5 and the upper support plate 3 and extends to the top of the upper support plate 3, a plurality of connecting plates 39 are evenly provided on the lower part of the surface of the lifting column 37, and a slide plate 40 is provided at the outer end of each connecting plate 39, and the slide plate 40 A U-shaped plate 41 is provided at the bottom of the outer side, a group of driving rods 42 are provided in the U-shaped groove of the U-shaped plate 41, a U-shaped plate 2 43 is provided at the other end of the driving rod 42, a conical block 44 is provided at the outer side of the U-shaped plate 2 43, a slide plate 2 45 is provided at the bottom of the disk 35 between the adjacent connecting plates 39, a U-shaped plate 3 46 is provided at the outer bottom of the slide plate 2 45, a group of driving rods 2 47 are provided in the U-shaped groove of the U-shaped plate 3 46, a U-shaped plate 48 is provided at the other end of the driving rod 2 47, a conical block 2 49 is provided at the outer side of the U-shaped plate 48, and the conical block 2 49 Inlaid between the adjacent conical blocks 44, side racks 50 are provided on both sides of the top of the disc 35, and the side racks 50 penetrate the cylinder 4, the lower support plate 5 and the upper support plate 3 and extend to the top of the upper support plate 3. Return springs 51 are provided on the tops of the side racks 50 and the middle rack 38, and the tops of the return springs 51 are respectively fixed on the top plate 2. A gear 52 meshing with the middle rack 38 is provided on one side of the middle rack 38, and a gear shaft 53 is inserted in the middle of the gear 52, and the two ends of the gear shaft 53 respectively penetrate the support plates on both sides. 33, a gear three 54 meshing with the gear one 52 is provided below the gear one 52, the gear three 54 is sleeved on the gear shaft two 32, and gear two 55 meshing with the side rack 50 are provided on both sides of the gear three 54 located on the gear shaft two 32, a cavity structured slide column 56 is provided at the center of the lower part of the cylinder 4, and a plurality of slide grooves 57 are provided on the side of the slide column 56, the slide plate one 40 and the slide plate two 45 are inserted into the slide groove 57 in a differential manner, and the bottom outer sides of the conical block two 49 and the conical block one 44 are provided with an arc plate 15.

[0037] Detailed usage and function of this embodiment:

[0038] During the soil turning process, the driving cylinder 6 and the air rod 7 produce a telescopic movement, and the air rod 7 pushes against the clamping block 8, prompting the clamping block 8 to pull the bent plate 1 9 to rotate. Under the pulling of the clamping block 8, the shovel plate 18 connected to the bottom of the bent plate 1 9 will be constantly turned over, and the shovel plates 18 on both sides dig and produce at the same time to loosen the soil. At the same time, the bent plates 1 9 and 14 are constantly rotating, driving the bellows 24 connected to the cross column 16, and the bellows 24 will compress the internal air, and the air power generated inside will be input into the air storage tank 19, and the air storage tank 19 will input the stored air power into the turbine group 20, driving the internal turbine to rotate. After the turbine rotates, the rotating shaft 25 crossing the middle will rotate, and the rotating shaft 25 will drive The generator 21 drives the motor 22 to run, wherein a battery is also provided in the pad 34, and the battery is connected to the motor 22. After the motor 22 runs, it drives the pulley 1 28 to rotate, and the pulley 1 28 drives the pulley 2 30 through the belt 29, and the pulley 2 30 drives the coupler 31. The coupler 31 is composed of a main rotor, a secondary rotor and an air gap. There is an air gap between the main rotor and the secondary rotor. The main rotor is connected to the pulley 2 30, and the secondary rotor is connected to the gear shaft 2 32. The air gap is the space between the two rotors. The main rotor and the secondary rotor are both made of magnetic materials to form a magnetic coupling. When the motor 22 is started, the main rotor will generate a rotating magnetic field, and this magnetic field will pass The air gap acts on the secondary rotor, making it rotate synchronously with the main rotor, which will drive the gear shaft 2 32 to rotate, and the gear shaft 2 32 will drive the gear 2 55 and the gear 3 54 to rotate, and the gear 3 54 will drive the meshing gear 1 52 above to rotate. Since the gear 1 52 and the gear 2 55 are located at different heights, the middle rack 38 and the side rack 50 are also at different heights, and the rotation directions between the gear 1 52 and the gear 2 55 are opposite. When the gear 1 52 and the gear 2 55 rotate, they will drive the meshing racks to rise and fall in opposite directions, thereby pressing the conical block 1 44 and the conical block 2 49 to move up and down in an alternating manner. In this way, the arc plate 15 at the bottom will continuously loosen the soil. The operation is to improve the soil turning effect. When the tiller tip over or the operation fails during the tilling operation and the handle of the vehicle is released from the hand, the movement between the cylinder 6 and the gas rod 7 is stopped, and the shovel plate 18 is restored to its original state. The bottom surface of the shovel plate 18 supports the ground, and the conical block 1 44 and the conical block 2 49 are restored to the original closed state under the action of the reset spring 51. At this time, the conical block 1 44 and the conical block 2 49 are combined to form an integral circular structure, and the arc plate 15 at the bottom is just around to form a ring, and this ring is inserted into the soil. The cylinder 4 supports the entire folding device, which stably supports the front end of the tiller, maintains the stability of the front end of the tiller, avoids tipping over, and improves safety during use.

[0039] Through the above specific implementations, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementations. On the basis of the disclosed implementations, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A crop tiller, characterized in that: The invention comprises a tilling unit (1) arranged on a tiller body, wherein a top plate (2) is arranged on the front top of the tilling unit (1), an upper support plate (3) is arranged below the top plate (2), a folding device is arranged at the bottom of the upper support plate (3), a cylinder (4) is arranged on the folding device, an opening and closing support device is arranged inside the cylinder (4), the opening and closing support device passes through the folding device, an aerodynamic device is arranged on the folding device, and the aerodynamic device is connected to the opening and closing support device; The folding device comprises a lower support plate (5), cylinders (6) are respectively provided on the corresponding side edges of both sides of the top of the lower support plate (5), a matching gas rod (7) is provided in the cylinder (6), a clamping block (8) is provided on the side of the gas rod (7) away from the cylinder (6), a bent plate (9) is provided in the clamping block (8), a connecting shaft (10) is inserted on the bent plate (9), and corner plates (11) are provided at both ends of the connecting shaft (10), the top of the corner plates (11) are respectively fixed to the two diagonal ends of the bottom of the upper support plate (3), and the other two diagonal ends of the bottom of the upper support plate (3) are provided with a group of corner plates (12), and the lower support plate (5) is fixed to the corner plates (11) 1) and the inner side of the corner plate 2 (12), a connecting shaft 2 (13) is provided between the bottom of the corner plate 2 (12), a bent plate 2 (14) is provided on the connecting shaft 2 (13), a bent plate 1 (9) is provided on the connecting shaft 1 (10), a cross column (16) is provided between the bottoms of the corresponding sides of the bent plate 1 (9) and the bent plate 2 (14), a plurality of bent pipes (17) are provided on the cross column (16), and a shovel plate (18) is provided between the bottoms of the bent pipes (17), the aerodynamic device comprises an air storage tank (19), a turbine group (20), a generator (21) and a motor (22), the air storage tank (19) is connected to the turbine group (20) through a pipeline (23), the turbine group ( 20) is connected to the generator (21), the generator (21) is connected to the motor (22), the gas storage tank (19) is connected to two bellows (24), the bottoms of the bellows (24) are respectively fixed to the top outer side of the cross column (16), a plurality of turbines are arranged in the turbine group (20), the turbines include a rotating shaft (25), a rotating disk (26) and a plurality of turbine blades (27), the rotating shaft (25) passes through the turbine group (20), the rotating disk (26) is sleeved on the rotating shaft (25), a plurality of turbine blades (27) are arranged on the surface of the rotating disk (26), the right end of the rotating shaft (25) passes through the turbine group (20) and is connected to the shaft of the generator (21), the The generator (21) is connected to the motor (22) via a motor shaft. The motor (22) is a bidirectional motor. A belt shaft is provided on the other side of the motor (22). A pulley 1 (28) is provided on the end of the belt shaft away from the motor (22). A belt (29) is provided on the pulley 1 (28). A pulley 2 (30) is provided on the other side of the belt (29). A coupler (31) is connected to the left side of the pulley 2 (30). A gear shaft 2 (32) is provided on the side of the coupler (31) away from the pulley 2 (30). Support plates (33) are provided on both sides of the gear shaft 2 (32). The opening and closing support device comprises a disc (35). The disc (35) is located in the cylinder (4).The top of the cylinder (4) is fixed to the bottom center of the lower support plate (5); a center hole (36) is provided in the middle of the disc (35); a lifting column (37) is provided in the center hole (36); a center rack (38) is provided at the top of the lifting column (37); the center rack (38) penetrates the cylinder (4), the lower support plate (5) and the upper support plate (3) and extends to the top of the upper support plate (3); a plurality of connecting plates (39) are evenly provided at the lower part of the surface of the lifting column (37); a slide plate (40) is provided at the outer end of each connecting plate (39); a U-shaped plate (41) is provided at the outer bottom of each slide plate (40); and the U-shaped plate (41) is provided at the bottom of each slide plate (40). A group of driving rods (42) are provided in the U-shaped grooves, and a U-shaped plate (43) is provided at the other end of each driving rod (42), and a conical block (44) is provided on the outside of each U-shaped plate (43); a slide plate (45) is provided at the bottom of each circular disc (35) between adjacent connecting plates (39), and a U-shaped plate (46) is provided at the bottom of the outer side of each slide plate (45); a group of driving rods (47) are provided in the U-shaped grooves of each U-shaped plate (46), and a U-shaped plate (48) is provided at the other end of each driving rod (47), and a conical block (49) is provided on the outside of each U-shaped plate (48), and the conical block (49) is embedded between adjacent conical blocks (44). Side racks (50) are provided on both sides of the top of the disc (35), and the side racks (50) penetrate the cylindrical body (4), the lower support plate (5) and the upper support plate (3) and extend to the top of the upper support plate (3). Return springs (51) are provided on the tops of the side racks (50) and the middle rack (38), and the tops of the return springs (51) are respectively fixed on the top plate (2). A gear 1 (52) meshing with the middle rack (38) is provided on one side of the middle rack (38), and a gear shaft 1 (53) is inserted in the middle of the gear 1 (52), and the two ends of the gear shaft 1 (53) respectively penetrate the upper parts of the support plates (33) on both sides. A gear 3 (54) meshing with the gear 1 (52) is provided below the wheel 1 (52), the gear 3 (54) is sleeved on the gear shaft 2 (32), and gear 2 (55) meshing with the side rack (50) is provided on both sides of the gear 3 (54) located on the gear shaft 2 (32). A cavity-structured slide column (56) is provided at the center of the lower part of the cylinder (4), and a plurality of slide grooves (57) are provided on the side of the slide column (56). The slide plate 1 (40) and the slide plate 2 (45) are inserted into the slide groove (57) in a staggered manner, and the bottom outer sides of the conical block 2 (49) and the conical block 1 (44) are both provided with arc plates (15).

2. A crop tiller according to claim 1, characterized in that: A pad (34) is provided between the bottoms of the support plates (33), and the bottoms of the pads (34) are fixed on the upper support plate (3).

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