Differential stubble cutting, root breaking and deep burying device

Abstract

A differential stubble cutting, root breaking and deep burying device belongs to the technical field of agricultural machinery and comprises an outer shell, a differential stubble cutting mechanism and a root breaking and deep burying mechanism, a three-point suspension bracket is arranged at the front end of the outer portion of the outer shell, the differential stubble cutting mechanism is located at the front end of the inner portion of the outer shell, and the root breaking and deep burying mechanism end is located at the rear end of the inner portion of the outer shell; according to the differential stubble cutting mechanism, three-stage speed change of the stubble cutting mechanism from top to bottom is achieved through a three-stage planetary gear set, the problem that crushing of the lower middle portions of stubbles is insufficient is solved through combined use of various cutters on a three-stage speed change cutter roller, lodging stubbles are straightened and cut through a toothed stubble supporting cutter with a bending angle and an arc-shaped cutter, and the stubble cutting efficiency is improved. The problems that lodging stubbles are missed to be cut and the cutting quality is poor are solved, downward root breaking and deep burying of broken roots are achieved through the auger, auger blades are spirally installed in a stacked mode, when the auger rotates upwards, the auger blades are in a contraction state, broken roots are prevented from returning to the field, and the problem that the broken roots return to the field are too small in depth is solved.

Description

Technical Field

[0001] The present invention relates to a differential stubble cutting, root breaking and deep burying device, belonging to the technical field of agricultural machinery. Background Art

[0002] Existing stubble treatment devices have problems such as insufficient crushing of the lower part of the stubble body, poor crushing quality of lodged stubble bodies, and too shallow depth of root breaking and returning to the field, resulting in a low decomposition rate of the stubble body, affecting the quality of subsequent sowing operations, and being unfavorable to the growth and development of seedlings. Summary of the Invention

[0003] The present invention aims to provide a differential stubble cutting, root breaking and deep burying device that can achieve sufficient stubble body crushing, effectively cut lodged stubble bodies, and increase the depth of root breaking and returning to the field. By using a three-stage planetary gear set to achieve three-stage speed change of the stubble cutting mechanism from top to bottom, and through the combined use of various tools on the three-stage speed change cutter roller, the problem of insufficient crushing of the middle and lower parts of the stubble body is solved. The use of a toothed stubble supporting knife with a bending angle and an arc-shaped cutter to achieve the righting and cutting of lodged stubble bodies solves the problems of missed cutting and poor crushing quality of lodged stubble bodies. The use of a screw conveyor to achieve downward root breaking and deep burying of crushed roots, and the screw conveyor blades are spirally stacked. When the screw conveyor rotates upward, the screw conveyor blades are in a contracted state to avoid the backhaul of crushed roots, solving the problem of too shallow depth of root breaking and returning to the field.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A differential stubble cutting, root breaking and deep burying device includes a housing, a differential stubble cutting mechanism, and a root breaking and deep burying mechanism. A three-point hitch is provided at the front end of the outside of the housing. The differential stubble cutting mechanism is located at the front end inside the housing, and the root breaking and deep burying mechanism is located at the rear end inside the housing.

[0006] The differential stubble cutting mechanism is characterized in that the first battery is fixedly installed on the inner front top plate of the outer housing, the first motor is fixedly installed below the first battery, the first battery is connected to the first motor through a power cord, the large central gear is fixedly installed on the output shaft of the first motor, the large central gear meshes with the first large planetary gear and the second large planetary gear respectively, a circular baffle with a circular groove is arranged at the bottom of the inner gear with a bracket, the circular groove is concentric with the circular baffle and penetrates the baffle, the diameter of the circular groove is larger than the diameter of the circular trajectory formed by the rotation of the first cutter roller and the fourth cutter roller, and smaller than the diameter of the inner gear with a bracket, the first large planetary gear and the second large planetary gear are rotatably installed on the edge of the circular groove above the circular baffle at the bottom of the inner gear with a bracket and mesh with the internal teeth of the inner gear with a bracket, the inner gear with a bracket is fixedly installed on the two side plates inside the outer housing through the support rods on its two sides, the first cutter roller and the fourth cutter roller are concentrically fixedly installed at the bottom of the first large planetary gear and the second large planetary gear respectively, three groups of straight knives with sawteeth are axially fixedly installed on the first cutter roller and the fourth cutter roller at equal intervals, the straight knives with sawteeth are provided with sawteeth at equal intervals along the cutting edge, the centers of the first planetary carrier and the third planetary carrier are concentrically fixedly installed at the bottom of the first cutter roller and the fourth cutter roller respectively, the first small planetary gear and the second small planetary gear, and the fifth small planetary gear and the sixth small planetary gear are rotatably and concentrically installed at the bottom rods at both ends of the first planetary carrier and the third planetary carrier respectively, the first small planetary gear and the second small planetary gear are respectively meshed with the internal teeth of the first small internal gear and the first small central gear, the fifth small planetary gear and the sixth small planetary gear are respectively meshed with the internal teeth of the third small internal gear and the third small central gear, circular baffles with circular grooves are arranged at the bottoms of the first small internal gear and the third small internal gear, the circular grooves are concentric with the circular baffles and penetrate the baffles, and the diameters of the circular grooves are respectively smaller than the outer tooth ring diameters of the first small central gear and the third small central gear, the first small central gear and the third small central gear are rotatably and concentrically installed on the edges of the circular grooves above the circular baffles at the bottoms of the first small internal gear and the third small internal gear respectively, a notch is arranged at one end of the first circular ring bracket along the advancing direction of the machine, and a circular groove penetrating the bracket is arranged at the bottom, the diameter of the circular groove is larger than the diameter of the circular trajectory formed by the rotation of the second cutter roller and the fifth cutter roller, and smaller than the diameter of the circular trajectory formed by the rotation of the first small internal gear and the third small internal gear, the first small internal gear and the third small internal gear are rotatably installed on the edges of the circular grooves above the first circular ring bracket, the first circular ring bracket is fixedly installed on the two side plates of the outer housing through the support rods on its two sides, the second cutter roller and the fifth cutter roller are concentrically fixedly installed at the bottoms of the first small central gear and the third small central gear respectively, four groups of triangular knives with sawteeth are axially fixedly installed on the second cutter roller and the fifth cutter roller at equal intervals, the triangular knives with sawteeth are provided with sawteeth at equal intervals along the cutting edge, the second planetary carrier and the fourth planetary carrier are concentrically fixedly installed at the bottoms of the second cutter roller and the fifth cutter roller respectively,The third minor planet gear, the fourth minor planet gear, the seventh minor planet gear, and the eighth minor planet gear are respectively rotatably and concentrically installed at the two end bottom rods of the second planet carrier and the fourth planet carrier. The third minor planet gear and the fourth minor planet gear are respectively meshed with the internal teeth of the second small internal gear and the second small central gear, and the seventh minor planet gear and the eighth minor planet gear are respectively meshed with the internal teeth of the fourth small internal gear and the fourth small central gear. The sizes and shapes of the second small internal gear and the fourth small internal gear are the same as those of the first small internal gear and the third small internal gear. The second small central gear and the fourth small central gear are respectively rotatably and concentrically installed on the edges of the circular grooves above the circular baffles at the bottoms of the second small internal gear and the fourth small internal gear. The size and shape of the second circular bracket are the same as those of the first circular bracket. The second small internal gear and the fourth small internal gear are respectively rotatably installed on the edges of the circular grooves above the second circular bracket. The second circular bracket is fixedly installed on the two side plates of the outer housing through the two side rods on its both sides. The third cutter roller and the sixth cutter roller are respectively concentrically fixedly installed at the bottoms of the second small central gear and the fourth small central gear. Four groups of cutter blades and a group of toothed stubble-raising blades are respectively fixedly installed on the third cutter roller and the sixth cutter roller at equal intervals axially from top to bottom. The cutter blades are arc-shaped, the toothed stubble-raising blades have a certain bending angle, and tooth edges are arranged on the inner side at the bending position.,

[0007] The deep root burying mechanism is characterized in that the support plate is fixedly installed on the rear end top plate inside the outer housing. The wireless controller, the air cylinder, the air compressor, and the guide rod are all fixedly installed on the support plate. The air cylinder and the air compressor are connected through a pipeline. The two sides of the lifting plate are slidably installed on the two side guide rods. The auger opening and closing drive shaft is rotatably installed at the center of the lifting plate. A number of straight rods are spirally and equidistantly fixedly installed on the auger opening and closing drive shaft. The support frame is fixedly installed on the two side plates at both ends of the outer housing. The second battery and the second motor are both fixedly installed on the support frame. The second motor and the second battery are connected through a power cord. The worm gear is fixedly installed on the output shaft of the second motor. The worm gear is meshed with the worm. Two support rods are fixedly installed at the bottom of the worm. The worm is rotatably installed on the rod-bearing. The two sides of the rod-bearing are fixedly installed on the two side plates at both ends of the outer housing. A number of auger blades are spirally and equidistantly hinged on the auger hollow shaft. Two first rectangular grooves are oppositely opened radially at the upper part of the auger hollow shaft. The height of the first rectangular groove is the same as the height of the starting point and the ending point of the spiral groove. A number of second rectangular grooves equal to the number of the auger blades are spirally and equidistantly opened at the middle and lower parts. The distribution of the second rectangular grooves on the auger hollow shaft corresponds to the distribution of the straight rods on the auger opening and closing drive shaft. One end of the round rod is fixedly installed on the auger hollow shaft, and the other end passes through the auger sleeve and is inserted into the spiral groove. The auger hollow shaft is clamped on the two support rods through the two first rectangular grooves. One end of the inclined rod is fixedly connected to the middle part of the lower end of the straight rod, and the other end is hinged to the middle part of the upper end of the auger blade. The auger sleeve is coaxially fixedly installed on the middle part of the round rod with the auger hollow shaft. The spiral groove sleeve is fixedly installed below the support frame.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses a three-stage planetary gear set to achieve three-stage speed change of the stubble cutting mechanism from top to bottom. By using a variety of tool combinations on the three-stage speed change cutter roller, the problem of insufficient shredding of the middle and lower parts of the stubble body is solved. The toothed stubble lifting knife with a bending angle and the arc-shaped cutter are used to achieve the righting and cutting of the lodged stubble body, solving the problems of missed cutting and poor shredding quality of the lodged stubble body. The auger is used to break the roots downward and deeply bury the broken roots. The auger blades are installed in a spiral and stacked manner. When the auger rotates upward, the auger blades are in a contracted state, avoiding the backhaul of the broken roots and solving the problem of too shallow depth of root breaking and returning to the field. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0010] Figure 1 It is a schematic diagram of the overall differential stubble cutting, root breaking and deep burying device

[0011] Figure 2 It is a schematic diagram of the differential stubble cutting mechanism (with a partial enlarged view)

[0012] Figure 3 It is a schematic diagram of the root breaking and deep burying mechanism (with a partial enlarged view)

[0013] Figure 4 It is a schematic diagram of the expandable and closable auger mechanism (including part drawings)

[0014] Description of component numbers in the figure: 1. Three-point hitch 2. Outer housing 3. First battery 4. First motor 5. Large central gear 6. First large planetary gear 7. Inner gear with bracket 8. First cutter roller 9. Straight knife with serrations 10. First planet carrier 11. First small planet gear 12. Second small planet gear 13. First small central gear 14. First small inner gear 15. First circular bracket 16. Second cutter roller 17. Triangular knife with serrations 18. Second planet carrier 19. Third small planet gear 20. Fourth small planet gear 21. Second small central gear 22. Second small inner gear 23. Second circular bracket 24. Third cutter roller 25. Cutter 26. Stubble-supporting knife with teeth 27. Second large planetary gear 28. Fourth cutter roller 29. Third planet carrier 30. Fifth small planet gear 31. Sixth small planet gear 32. Third small central gear 33. Third small inner gear 34. Fifth cutter roller 35. Fourth planet carrier 36. Seventh small planet gear 37. Eighth small planet gear 38. Fourth small central gear 39. Fourth small inner gear 40. Sixth cutter roller 41. Support plate 42. Wireless controller 43. Guide rod 44. Lifting plate 45. Auger opening and closing drive shaft 46. Bearing with rod 47. Worm 48. Cylinder 49. Air compressor 50. Worm gear 51. Second motor 52. Second battery 53. Support frame 54. Auger hollow shaft 55. First rectangular groove 56. Support rod 57. Round rod 58. Sleeve with spiral groove 59. Spiral groove 60. Auger sleeve 61. Second rectangular groove 62. Auger blade 63. Straight rod 64. Diagonal rod Detailed implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0016] The present invention will be further described in detail below in conjunction with the embodiments.

[0017] As Figures 1-4 shown, a specific embodiment of a differential stubble cutting, root breaking and deep burying device provided by the present invention:

[0018] A differential stubble cutting, root breaking and deep burying device includes an outer housing 2, a differential stubble cutting mechanism, and a root breaking and deep burying mechanism. A three-point hitch 1 is provided at the front end of the outside of the outer housing 2. The differential stubble cutting mechanism is located at the front end inside the outer housing 2, and the root breaking and deep burying mechanism is located at the rear end inside the outer housing 2.

[0019] The differential stubble cutting mechanism is characterized in that the first storage battery 3 is fixedly installed on the inner front top plate of the outer casing 2, the first motor 4 is fixedly installed below the first storage battery 3, the first storage battery 3 is connected to the first motor 4 through a power cord, the large central gear 5 is fixedly installed on the output shaft of the first motor 4, the large central gear 5 meshes with the first large planetary gear 6 and the second large planetary gear 27 respectively, the bottom of the inner gear 7 with a bracket is provided with a circular baffle with a circular groove, the circular groove is concentric with the circular baffle and penetrates the baffle, the diameter of the circular groove is larger than the diameter of the circular trajectories formed by the rotation of the first cutter roller 8 and the fourth cutter roller 28, and smaller than the diameter of the inner gear 7 with a bracket, the first large planetary gear 6 and the second large planetary gear 27 are rotatably installed on the edge of the circular groove above the circular baffle at the bottom of the inner gear 7 with a bracket and mesh with the internal teeth of the inner gear 7 with a bracket, the inner gear 7 with a bracket is fixedly installed on the two side plates inside the outer casing 2 through the support rods on both sides thereof, the first cutter roller 8 and the fourth cutter roller 28 are respectively concentrically fixedly installed at the bottoms of the first large planetary gear 6 and the second large planetary gear 27, three groups of straight knives 9 with saw teeth are respectively axially fixedly installed on the first cutter roller 8 and the fourth cutter roller 28 at equal intervals, the straight knives 9 with saw teeth are provided with saw teeth at equal intervals along the cutting edges, the centers of the first planetary carrier 10 and the third planetary carrier 29 are respectively concentrically fixedly installed at the bottoms of the first cutter roller 8 and the fourth cutter roller 28, the first small planetary gear 11, the second small planetary gear 12 and the fifth small planetary gear 30, the sixth small planetary gear 31 are respectively rotatably and concentrically installed at the bottom rods at both ends of the first planetary carrier 10 and the third planetary carrier 29, the first small planetary gear 11 and the second small planetary gear 12 respectively mesh with the internal teeth of the first small internal gear 14 and the first small central gear 13, the fifth small planetary gear 30 and the sixth small planetary gear 31 respectively mesh with the internal teeth of the third small internal gear 33 and the third small central gear 32, the bottoms of the first small internal gear 14 and the third small internal gear 33 are both provided with circular baffles with circular grooves, the circular grooves are concentric with the circular baffles and penetrate the baffles, and the diameters of the circular grooves are respectively smaller than the outer tooth ring diameters of the first small central gear 13 and the third small central gear 32, the first small central gear 13 and the third small central gear 32 are respectively rotatably and concentrically installed on the edge of the circular groove above the circular baffle at the bottom of the first small internal gear 14 and the third small internal gear 33, one end of the first circular ring bracket 15 in the advancing direction of the machine tool is provided with a notch, and a circular groove penetrating the bracket is provided at the bottom, the diameter of the circular groove is larger than the diameter of the circular trajectories formed by the rotation of the second cutter roller 16 and the fifth cutter roller 34, and smaller than the diameter of the circular trajectories formed by the rotation of the first small internal gear 14 and the third small internal gear 33, the first small internal gear 14 and the third small internal gear 33 are rotatably installed on the edge of the circular groove above the first circular ring bracket 15, the first circular ring bracket 15 is fixedly installed on the two side plates of the outer casing 2 through the support rods on both sides thereof, the second cutter roller 16 and the fifth cutter roller 34 are respectively concentrically fixedly installed at the bottoms of the first small central gear 13 and the third small central gear 32,Four groups of serrated triangular knives 17 are respectively and axially fixedly installed on the second knife roller 16 and the fifth knife roller 34 at equal intervals. The serrated triangular knives 17 are provided with serrations at equal intervals along the blade edges. The second planetary carrier 18 and the fourth planetary carrier 35 are respectively and concentrically fixedly installed at the bottoms of the second knife roller 16 and the fifth knife roller 34. The third minor planet gears 19, the fourth minor planet gears 20 and the seventh minor planet gears 36, the eighth minor planet gears 37 are respectively rotatably and concentrically installed at the bottom rods at both ends of the second planetary carrier 18 and the fourth planetary carrier 35. Both the third minor planet gears 19 and the fourth minor planet gears 20 are respectively meshed with the internal teeth of the second small internal gear 22 and the second small central gear 21. Both the seventh minor planet gears 36 and the eighth minor planet gears 37 are respectively meshed with the internal teeth of the fourth small internal gear 39 and the fourth small central gear 38. The sizes and shapes of the second small internal gear 22 and the fourth small internal gear 39 are the same as those of the first small internal gear 14 and the third small internal gear 33. The second small central gear 21 and the fourth small central gear 38 are respectively rotatably and concentrically installed on the edges of the circular grooves above the circular baffles at the bottoms of the second small internal gear 22 and the fourth small internal gear 39. The size and shape of the second circular support bracket 23 are the same as those of the first circular support bracket 15. The second small internal gear 22 and the fourth small internal gear 39 are respectively rotatably installed on the edges of the circular grooves above the second circular support bracket 23. The second circular support bracket 23 is fixedly installed on the two side plates of the outer housing 2 through the support rods on both sides thereof. The third knife roller 24 and the sixth knife roller 40 are respectively concentrically fixedly installed at the bottoms of the second small central gear 21 and the fourth small central gear 38. Four groups of cutting knives 25 and one group of toothed stubble-holding knives 26 are respectively and axially fixedly installed on the third knife roller 24 and the sixth knife roller 40 from top to bottom at equal intervals. The cutting knives 25 are arc-shaped. The toothed stubble-holding knives 26 have a certain bending angle, and tooth edges are provided on the inner side of the bending part.,

[0020] The characteristics of the deep root-breaking mechanism are that the support plate 41 is fixedly installed on the rear end top plate inside the outer casing 2, the wireless controller 42, the cylinder 48, the air compressor 49, and the guide rod 43 are all fixedly installed on the support plate 41. The cylinder 48 and the air compressor 49 are connected by a pipeline. The two sides of the lifting plate 44 are slidably installed on the two side guide rods 43. The auger opening and closing drive shaft 45 is rotatably installed at the center of the lifting plate 44. A number of straight rods 63 are fixedly installed on the auger opening and closing drive shaft 45 at equal spiral intervals. The support frame 53 is fixedly installed on the side plates at both ends of the outer casing 2. The second battery 52 and the second motor 51 are both fixedly installed on the support frame 53. The second motor 51 and the second battery 52 are connected by a power cord. The worm gear 50 is fixedly installed on the output shaft of the second motor 51. The worm gear 50 meshes with the worm 47. Two support rods 56 are fixedly installed at the bottom of the worm 47. The worm 47 is rotatably installed on the rod-bearing 46. The two sides of the rod-bearing 46 are fixedly installed on the side plates at both ends of the outer casing 2. A number of auger blades 62 are hinged on the auger hollow shaft 54 at equal spiral intervals. Two first rectangular grooves 55 are radially oppositely opened at the upper part of the auger hollow shaft 54. The height of the first rectangular groove 55 is the same as the height of the starting point and the ending point of the spiral groove 59. A number of second rectangular grooves 61 equal to the number of the auger blades 62 are spirally and equally spaced in the middle and lower part. The distribution of the second rectangular grooves 61 on the auger hollow shaft 54 corresponds to the distribution of the straight rods 63 on the auger opening and closing drive shaft 45. One end of the round rod 57 is fixedly installed on the auger hollow shaft 54, and the other end passes through the auger sleeve 60 and is inserted into the spiral groove 59. The auger hollow shaft 54 is clamped on the two support rods 56 through the two first rectangular grooves 55. One end of the inclined rod 64 is fixedly connected to the middle part of the lower end of the straight rod 63, and the other end is hinged to the middle part of the upper end of the auger blade 62. The auger sleeve 60 is coaxially fixedly installed on the middle part of the round rod 57 with the auger hollow shaft 54. The sleeve with a spiral groove 58 is fixedly installed below the support frame 53.

[0021] When the differential stubble cutting mechanism is operating, the power unit drives the device forward through the three-point hitch 1. The stubble body enters the working area of the differential stubble cutting mechanism through the notches of the first annular bracket 15 and the second annular bracket 23. The first battery 3 supplies power to the first motor 4. The first motor 4 drives the large central gear 5 to rotate. The large central gear 5 drives the first large planetary gear 6 and the second large planetary gear 27 to rotate around the large central gear 5 while rotating on their own axes. The first large planetary gear 6 and the second large planetary gear 27 respectively drive the first cutter roller 8 and the fourth cutter roller 28 to rotate in opposite directions at a primary speed, and then drive the serrated straight knife 9 with a primary knife length to rotate in opposite directions at a primary speed, thereby realizing the crushing of the upper part of the stubble. This is the primary differential mechanism. The first cutter roller 8 and the fourth cutter roller 28 respectively drive the first planetary carrier 10 and the third planetary carrier 29 to rotate, and then respectively drive the first small planetary gear 11, the second small planetary gear 12, the fifth small planetary gear 30, and the sixth small planetary gear 31 to rotate at a primary speed. The number of teeth of the first small planetary gear 11, the second small planetary gear 12, the fifth small planetary gear 30, and the sixth small planetary gear 31 are respectively more than those of the first small central gear 13 and the third small central gear 32, and the transmission ratio is greater than that of the primary differential mechanism. The first small planetary gear 11 and the second small planetary gear 12 drive the first small central gear 13 to rotate at a secondary speed. The fifth small planetary gear 30 and the sixth small planetary gear 31 mesh to drive the third small central gear 32 to rotate at a secondary speed. The first small central gear 13 and the third small central gear 32 respectively drive the second cutter roller 16 and the fifth cutter roller 34 to rotate in opposite directions at a secondary speed, and then drive the serrated triangular knife 17 with a secondary knife length to rotate in opposite directions at a secondary speed. The secondary knife length is greater than the primary knife length, thereby realizing the crushing of the middle part of the stubble. This is the secondary differential mechanism. The second cutter roller 16 and the fifth cutter roller 34 respectively drive the second planetary carrier 18 and the fourth planetary carrier 35 to rotate at a secondary speed, and then respectively drive the third small planetary gear 19, the fourth small planetary gear 20, the seventh small planetary gear 36, and the eighth small planetary gear 37 to rotate at a secondary speed. The number of teeth of the third small planetary gear 19, the fourth small planetary gear 20, the seventh small planetary gear 36, and the eighth small planetary gear 37 are respectively more than those of the second small central gear 21 and the fourth small central gear 38, and the transmission ratio is greater than that of the secondary differential mechanism. The third small planetary gear 19 and the fourth small planetary gear 20 mesh to drive the second small central gear 21 to rotate at a tertiary speed. The seventh small planetary gear 36 and the eighth small planetary gear 37 mesh to drive the fourth small central gear 38 to rotate at a tertiary speed. The second small central gear 21 and the fourth small central gear 38 respectively drive the third cutter roller 24 and the sixth cutter roller 40 to rotate at a tertiary speed, and then drive the cutter 25 with a tertiary knife length and the toothed stubble supporting knife 26 with a quaternary knife length to rotate in opposite directions at a tertiary speed. The tertiary knife length is greater than the secondary knife length, and the quaternary knife length is greater than the tertiary knife length. The toothed stubble supporting knife 26 with a quaternary knife length contacts the stubble body first, thereby realizing the crushing of the lower part of the stubble and the first straightening and then crushing of the whole stubble body. This is the tertiary differential mechanism;In summary, the lengths of the straight serrated knife 9, the triangular serrated knife 17, the cutter 25, and the toothed stubble-holding knife 26 increase in sequence, corresponding to the first, second, and third levels of rotational speeds respectively, and the rotational speeds of the first, second, and third levels increase in sequence. The difference between the knife length and the rotational speed of the knife roller is set to adapt to the characteristics of the increasing diameter and strength of the corn stubble body from top to bottom. Moreover, the toothed stubble-holding knife 26 has a certain function of righting the lodged stubble body, effectively improving the crushing performance of the device for the lodged stubble.

[0022] When the deep root burying mechanism is operating and the closable auger moves downward, the second battery 52 supplies power to the second motor 51. The second motor 51 drives the worm wheel 50 to rotate forward, and then drives the worm 47 to rotate forward. The worm 47 drives the support rod 56 to rotate forward, and then drives the auger hollow shaft 54 to rotate forward. The auger hollow shaft 54 drives the auger blades 62 and the straight rod 63 to rotate forward. The auger blades 62 and the straight rod 63 jointly drive the inclined rod 64 to rotate forward. The straight rod 63 drives the auger closing and opening drive shaft 45 to rotate forward. At the same time, the worm 47 drives the auger hollow shaft 54 to rotate forward, and then drives the round rod 57 to rotate forward, and then drives the auger sleeve 60 to rotate forward. And because the round rod 57 slides downward along the spiral groove 59 on the spiral groove sleeve 58, it drives the auger hollow shaft 54 and the auger sleeve 60 to move downward synchronously. At this time, the wireless controller 42 controls the downward movement speed of the piston rod of the cylinder 48 to be the same as the downward movement speed of the auger hollow shaft 54. The piston rod of the cylinder 48 pushes the lifting plate 44 to slide downward along the guide rod 43, and then pushes the auger closing and opening drive shaft 45 to move downward. The downward movement speed of the auger closing and opening drive shaft 45 is the same as the synchronous downward movement speed of the auger hollow shaft 54 and the auger sleeve 60, so that the auger blades 62 always remain open during the rotation and downward movement, and the crushing and deep burying of the roots are realized through the rotation and downward movement of the auger blades 62 respectively;When the closable auger mechanism moves upward, the wireless controller 42 controls the second motor 51 to rotate reversely. The second motor 51 drives the worm wheel 50 to rotate reversely, and then drives the worm 47 to rotate reversely. The worm 47 drives the support rod 56 to rotate reversely, and then drives the auger hollow shaft 54 to rotate reversely. The auger hollow shaft 54 drives the auger blade 62 and the straight rod 63 to rotate reversely. The auger blade 62 and the straight rod 63 jointly drive the inclined rod 64 to rotate reversely. The straight rod 63 drives the auger closing and opening drive shaft 45 to rotate reversely. At the same time, the worm 47 drives the auger hollow shaft 54 to rotate reversely, and then drives the round rod 57 to rotate reversely, and then drives the auger sleeve 60 to rotate reversely. And because the round rod 57 slides upward along the spiral groove 59 on the spiral groove sleeve 58, it drives the auger hollow shaft 54 and the auger sleeve 60 to move upward synchronously. The wireless controller 42 controls the upward movement speed of the piston rod of the cylinder 48 in two stages. In the first stage, the upward movement speed of the piston rod of the cylinder 48 is greater than the upward movement speed of the auger hollow shaft 54, so that the upward movement speed of the auger closing and opening drive shaft 45 is greater than the upward movement speed of the auger hollow shaft 54. Then the straight rod 63 and the inclined rod 64 move upward relative to the second rectangular groove 61. The inclined rod 64 thus pulls the auger blade 62 to rotate upward around the hinge point and starts to close. When the straight rod 63 and the inclined rod 64 move upward along the second rectangular groove 61 to the top, the auger blade 62 is completely closed. In the second stage, the upward movement speed of the piston rod of the cylinder 48 is equal to the upward movement speed of the auger hollow shaft 54, so that the upward movement speed of the auger closing and opening drive shaft 45 is equal to the upward movement speed of the auger hollow shaft 54, and the straight rod 63 and the inclined rod 64 are kept at the top of the second rectangular groove 61, so that the auger blade 62 is kept in the closed state until the closable auger returns to the original position. Thus, within one movement cycle of the auger, the rotation downward and deep-buried movement of the auger blade 62 in the open state and the rotation upward movement in the closed state are completed, preventing the backhaul of the broken roots and the soil.

[0023] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A differential stubble cutting and deep root burying device, comprising an outer casing (2), a differential stubble cutting mechanism, and a deep root burying mechanism. A three-point hitch (1) is provided at the front end of the outer casing (2). The differential stubble cutting mechanism is located at the front end inside the outer casing (2), and the deep root burying mechanism is located at the rear end inside the outer casing (2).

2. The differential stubble cutting and deep root burying device according to claim 1, wherein The first battery (3) is fixedly installed on the inner front top plate of the outer housing (2). The first motor (4) is fixedly installed below the first battery (3). The first battery (3) is connected to the first motor (4) through a power cord. The large central gear (5) is fixedly installed on the output shaft of the first motor (4). The large central gear (5) meshes with the first large planetary gear (6) and the second large planetary gear (27) respectively. The bottom of the inner gear (7) with a bracket is provided with a circular baffle with a circular groove. The circular groove is concentric with the circular baffle and penetrates the baffle. The diameter of the circular groove is larger than the diameter of the circular trajectory formed by the rotation of the first cutter roller (8) and the fourth cutter roller (28), and smaller than the diameter of the inner gear (7) with a bracket. The first large planetary gear (6) and the second large planetary gear (27) are rotatably installed on the edge of the circular groove above the circular baffle at the bottom of the inner gear (7) with a bracket, and mesh with the internal teeth of the inner gear (7) with a bracket. The inner gear (7) with a bracket is fixedly installed on the two side plates inside the outer housing (2) through its two side rods. The first cutter roller (8) and the fourth cutter roller (28) are respectively concentrically fixedly installed at the bottoms of the first large planetary gear (6) and the second large planetary gear (27). Three groups of straight knives with sawteeth (9) are respectively axially fixedly installed on the first cutter roller (8) and the fourth cutter roller (28) at equal intervals. The straight knives with sawteeth (9) are provided with sawteeth at equal intervals along the blade edge. The centers of the first planetary carrier (10) and the third planetary carrier (29) are respectively concentrically fixedly installed at the bottoms of the first cutter roller (8) and the fourth cutter roller (28). The first small planetary gear (11), the second small planetary gear (12), the fifth small planetary gear (30), and the sixth small planetary gear (31) are respectively rotatably and concentrically installed at the bottom rods at both ends of the first planetary carrier (10) and the third planetary carrier (29). The first small planetary gear (11) and the second small planetary gear (12) respectively mesh with the internal teeth of the first small internal gear (14) and the first small central gear (13). The fifth small planetary gear (30) and the sixth small planetary gear (31) respectively mesh with the internal teeth of the third small internal gear (33) and the third small central gear (32). The bottoms of the first small internal gear (14) and the third small internal gear (33) are both provided with circular baffles with circular grooves. The circular grooves are concentric with the circular baffles and penetrate the baffles, and the diameters of the circular grooves are respectively smaller than the outer tooth ring diameters of the first small central gear (13) and the third small central gear (32). The first small central gear (13) and the third small central gear (32) are respectively rotatably and concentrically installed on the edge of the circular groove above the circular baffle at the bottom of the first small internal gear (14) and the third small internal gear (33). One end of the first circular ring bracket (15) in the direction of the machine's advancement is provided with a notch, and a circular groove penetrating the bracket is provided at the bottom. The diameter of the circular groove is larger than the diameter of the circular trajectory formed by the rotation of the second cutter roller (16) and the fifth cutter roller (34), and smaller than the diameter of the circular trajectory formed by the rotation of the first small internal gear (14) and the third small internal gear (33).The first small internal gear (14) and the third small internal gear (33) are rotatably mounted on the edges of the circular grooves above the first annular bracket (15). The first annular bracket (15) is fixedly installed on the two side plates of the outer housing (2) through its two side rods. The second cutter roller (16) and the fifth cutter roller (34) are concentrically and fixedly installed at the bottoms of the first small central gear (13) and the third small central gear (32) respectively. Four groups of serrated triangular knives (17) are axially and equidistantly fixedly installed on the second cutter roller (16) and the fifth cutter roller (34) respectively. The serrated triangular knives (17) are provided with serrations at equal intervals along the blade edges. The second planet carrier (18) and the fourth planet carrier (35) are concentrically and fixedly installed at the bottoms of the second cutter roller (16) and the fifth cutter roller (34) respectively. The third small planet gears (19), the fourth small planet gears (20), the seventh small planet gears (36), and the eighth small planet gears (37) are rotatably and concentrically installed at the bottom rods at both ends of the second planet carrier (18) and the fourth planet carrier (35) respectively. The third small planet gears (19) and the fourth small planet gears (20) are respectively meshed with the internal teeth of the second small internal gear (22) and the second small central gear (21). The seventh small planet gears (36) and the eighth small planet gears (37) are respectively meshed with the internal teeth of the fourth small internal gear (39) and the fourth small central gear (38). The sizes and shapes of the second small internal gear (22) and the fourth small internal gear (39) are the same as those of the first small internal gear (14) and the third small internal gear (33). The second small central gear (21) and the fourth small central gear (38) are rotatably and concentrically installed on the edges of the circular grooves above the circular baffles at the bottoms of the second small internal gear (22) and the fourth small internal gear (39). The size and shape of the second annular bracket (23) are the same as those of the first annular bracket (15). The second small internal gear (22) and the fourth small internal gear (39) are rotatably installed on the edges of the circular grooves above the second annular bracket (23) respectively. The second annular bracket (23) is fixedly installed on the two side plates of the outer housing (2) through its two side rods. The third cutter roller (24) and the sixth cutter roller (40) are concentrically and fixedly installed at the bottoms of the second small central gear (21) and the fourth small central gear (38) respectively. Four groups of cutting knives (25) and a group of toothed stubble-holding knives (26) are axially and equidistantly fixedly installed on the third cutter roller (24) and the sixth cutter roller (40) from top to bottom respectively. The cutting knives (25) are arc-shaped, and the toothed stubble-holding knives (26) have a certain bending angle, and tooth edges are provided on the inner side of the bending part., 3. The differential stubble cutting and deep root burying device according to claim 1, characterized in that A support plate (41) is fixedly installed on the rear end top plate inside the outer casing (2). A wireless controller (42), a cylinder (48), an air compressor (49), and a guide rod (43) are all fixedly installed on the support plate (41). The cylinder (48) and the air compressor (49) are connected by a pipeline. Both sides of a lifting plate (44) are slidably installed on the two guide rods (43). A screw conveyor opening and closing drive shaft (45) is rotatably installed at the center of the lifting plate (44). A number of straight rods (63) are fixedly installed on the screw conveyor opening and closing drive shaft (45) in a spiral and equidistant manner. A support frame (53) is fixedly installed on the side plates at both ends of the outer casing (2). A second battery (52) and a second motor (51) are both fixedly installed on the support frame (53). The second motor (51) and the second battery (52) are connected by a power cord. A worm gear (50) is fixedly installed on the output shaft of the second motor (51). The worm gear (50) meshes with a worm (47). Two support rods (56) are fixedly installed at the bottom of the worm (47). The worm (47) is rotatably installed on a rod-bearing (46). Both sides of the rod-bearing (46) are fixedly installed on the side plates at both ends of the outer casing (2). A number of screw conveyor blades (62) are hinged on a screw conveyor hollow shaft (54) in a spiral and equidistant manner. Two first rectangular slots (55) are radially and oppositely opened at the upper part of the screw conveyor hollow shaft (54). The height of the first rectangular slots (55) is the same as the height of the starting point and the ending point of the spiral groove (59). A number of second rectangular slots (61) equal to the number of the screw conveyor blades (62) are spirally and equidistantly opened at the middle and lower part. The distribution of the second rectangular slots (61) on the screw conveyor hollow shaft (54) corresponds to the distribution of the straight rods (63) on the screw conveyor opening and closing drive shaft (45). One end of a round rod (57) is fixedly installed on the screw conveyor hollow shaft (54), and the other end passes through a screw conveyor sleeve (60) and is inserted into the spiral groove (59). The screw conveyor hollow shaft (54) is clamped on the two support rods (56) through the two first rectangular slots (55). One end of an inclined rod (64) is fixedly connected to the middle of the lower end of the straight rod (63), and the other end is hinged to the middle of the upper end of the screw conveyor blade (62). The screw conveyor sleeve (60) is coaxially fixedly installed on the middle of the round rod (57) with the screw conveyor hollow shaft (54). A sleeve with a spiral groove (58) is fixedly installed below the support frame (53).

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