Stubble cleaner capable of easily adjusting stubble cleaning depth

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a stubble cleaning machine easy to adjust stubble cleaning depth, which comprises a case, a support arranged above the case, side frames arranged on two sides of the case, threaded holes and square grooves formed in the side frames, the square grooves are located under the threaded holes, threaded rods are screwed in the threaded holes, and the threaded rods are connected with the threaded rods through bolts. A bottom supporting shaft is rotatably connected to the bottom of the threaded rod, a square column is fixedly connected to the bottom of the bottom supporting shaft, an inner cavity is formed in the upper surface of the case, a protection plate is arranged in the inner cavity, a seat plate is arranged on the upper surface of the protection plate, a clamping plate is fixed to the surface of the seat plate, and a limiting hole is formed in the surface of the clamping plate; the limiting assembly comprises a base, a vertical plate, a limiting rod, a spring, a fixed disc, an extension rod and a pull plate; the stubble cleaning machine has the beneficial effects that the stubble cleaning depth can be adjusted, the stubble cleaning effect and the operation quality are improved, the inner cavity is formed in the surface of the machine box, a stubble cleaning cutter in the machine box can be conveniently overhauled and maintained, and a protection plate convenient to open and close is arranged in the inner cavity.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a stubble destroyer with easily adjustable stubble destroying depth. Background Art

[0002] The traditional agricultural farming process includes main steps such as loosening the soil, sowing, cultivating and harvesting. In the process of development of traditional agricultural civilization along with the process of industrialization, individual steps in agricultural farming can be achieved through professional agricultural machinery, which greatly improves agricultural work efficiency. For example, the existing thresher can thresh independently, which can greatly improve farmers' harvesting efficiency. However, the straw left after threshing is placed in the field as a whole. In order to protect the environment, burning is not allowed; therefore, the existing stubble destroyer is mainly used to remove the crop stubble left in the field after harvesting.

[0003] However, the stubble destroyers currently on the market have the following defects:

[0004] 1. The overall height of the chassis is fixed, which directly limits the working height of the stubble-removing knife inside the chassis, making it impossible for users to adjust the stubble-removing depth according to actual needs, thus affecting the stubble-removing effect and operation quality.

[0005] 2. The chassis of the stubble destroyer is designed as an integrated structure. This structure makes it difficult to reach the stubble destroyer inside the chassis. After a long period of use, the necessary inspection and maintenance of the stubble destroyer becomes quite cumbersome, increasing the difficulty of operation and maintenance costs.

[0006] To this end, the present invention proposes a stubble destroying machine which is easy to adjust the stubble destroying depth to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide a stubble destroying machine with easily adjustable stubble destroying depth, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a stubble destroyer with easily adjustable stubble destroying depth, the stubble destroyer with easily adjustable stubble destroying depth comprising: a chassis, a bracket is arranged on the top of the chassis, side frames are arranged on both sides of the chassis, threaded holes and square grooves are arranged inside the side frames, the square grooves are located directly below the threaded holes, threaded rods are screwed in the threaded holes, a bottom support shaft is rotatably connected to the bottom of the threaded rods, and a square column is fixedly connected to the bottom of the bottom support shaft;

[0009] The upper surface of the chassis is provided with an inner cavity, a protective plate is arranged in the inner cavity, a seat plate is arranged on the upper surface of the protective plate, a clamping plate is fixed on the surface of the seat plate, and a limiting hole is arranged on the surface of the clamping plate;

[0010] The limiting assembly includes a base, a vertical plate, a limiting rod, a spring, a fixed plate, an extension rod and a pull plate, and the limiting assembly is arranged on the upper surface of the chassis.

[0011] Preferably, a stubble-cutting shaft is provided inside the chassis, a stubble-cutting knife is provided on the stubble-cutting shaft, two ends of the stubble-cutting shaft are rotatably connected to two sides of the chassis, one end of the stubble-cutting shaft extends out of the chassis and a driven sprocket is fixed at the end face.

[0012] Preferably, a motor is provided on the surface of the chassis, the motor is confined in a frame, the frame is fixed to the surface of the chassis by bolts, the output end of the motor is fixedly connected to a transmission shaft, a driving sprocket is fixed to the end face of the transmission shaft, the driving sprocket and the driven sprocket are connected by a chain, a connecting plate is welded on the surface of the chassis, the connecting plate is located next to the motor, and the transmission shaft is connected to the connecting plate through a bearing.

[0013] Preferably, a first ear plate and a second ear plate are fixed to the upper surface of the chassis, and two groups of the first ear plates and the second ear plates are provided. The two groups of first ear plates are symmetrically distributed about the central axis of the case surface, and the two groups of second ear plates are symmetrically distributed about the central axis of the case surface, and the bottom of the bracket is connected to the first ear plate and the second ear plate respectively through stud bolts.

[0014] Preferably, the side frame is divided into two parts, the upper part of the side frame is installed on the surface of the box body by bolts, and the lower part of the side frame extends toward the bottom surface. The threaded hole occupies four-fifths of the whole side frame, and the square groove occupies one-fifth of the whole side frame. The cross-sectional diameter length of the threaded hole is greater than the diagonal length of the square groove cross-section.

[0015] Preferably, the square column is located in the square groove, the outer wall of the square column and the inner wall of the square groove are in contact and slidably connected, a bottom block is fixed at the bottom of the square column, a moving wheel is rotatably connected to the side of the bottom block, a turning handle is fixed at the top of the threaded rod, and the square column can be extended into the threaded hole.

[0016] Preferably, there are two groups of inner cavities, which are symmetrically distributed about the central axis of the chassis surface, and the stubble-removing shaft is located directly below the inner cavity. There are two groups of limit assemblies, which are respectively located beside the two groups of inner cavities. The base is in the shape of a square plate, and the base is fixed to the chassis surface by bolts.

[0017] Preferably, two groups of vertical plates symmetrically distributed about the central axis of the base surface are fixed on the upper surface of the base, a middle groove is formed between the two groups of vertical plates, a through hole is opened on the surface of the vertical plate, a limiting rod is inserted in the through hole, a fixed plate is fixed at the end face of the limiting rod, the fixed plate is in the shape of a disc, a spring is provided between the fixed plate and the vertical plate, the spring is sleeved on the limiting rod, one end of the spring is fixedly connected to the vertical plate, and the other end of the spring is fixedly connected to the fixed plate, an extension rod is fixed to the surface of the fixed plate, a clamping plate is fixed to the end face of the extension rod, and the clamping plate is in the shape of an "I".

[0018] Preferably, a baffle is fixed on the inner surface of the inner cavity near the central axis of the box body, and the material of the baffle is rubber. Slide grooves are opened on the inner walls on both sides of the inner cavity, and through grooves are opened on both sides of the box body. The through grooves are located on the side surfaces of the inner cavity, and sliders are fixed on both sides of the protective plate. The sliders are located in the slide grooves and are slidably connected. The protective plate can move in the through grooves, one end of the protective plate is in contact with and tightly pressed against the baffle, and a sealing plate is fixed to the other end of the protective plate.

[0019] Preferably, the cross-section of the sealing plate is larger than that of the through groove, the sealing plate contacts and presses against the side of the box body, the seat plate is fixed to the protective plate by bolts, the seat plate is arranged away from the sealing plate, the clamping plate faces the central axis of the surface of the chassis, the clamping plate is inserted into the middle groove, the limiting rod is inserted into the limiting hole, and a support plate is fixed at the center position of the surface of the sealing plate, the cross-section of the support plate is a right-angled triangle, the right-angled side on one side of the support plate and the sealing plate, and the right-angled plate on the other side of the support plate faces the bottom surface and a buckle groove is opened on the surface.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The stubble destroying machine with easily adjustable stubble destroying depth proposed by the present invention can adjust the stubble destroying depth, improve the stubble destroying effect and operation quality, an inner cavity is opened on the surface of the chassis, which is convenient for inspection and maintenance of the stubble destroying knife inside the chassis, and a protective plate which is easy to open and close is provided in the inner cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a side view of the overall structure of the present invention;

[0024] Figure 3 It is a top view of the overall structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the transmission shaft structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the square column structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the chassis structure of the present invention;

[0028] Figure 7 for Figure 6 A magnified view of the structure at center;

[0029] Figure 8 It is a cross-sectional view of the side frame structure of the present invention;

[0030] Fig. 9 This is a schematic diagram of the structure of the protective plate of the present invention;

[0031] Fig.10It is a schematic diagram of the seat plate structure of the present invention.

[0032] In the figure: 1, bracket; 2, first ear plate; 3, chassis; 4, handle; 5, side frame; 6, moving wheel;

[0033] 7. Support plate; 8. Closing plate; 9. Protective plate; 10. Second ear plate; 11. Motor; 12. Transmission shaft;

[0034] 13. Connecting plate; 14. Driving sprocket; 15. Chain; 16. Driven sprocket; 17. Stubble-eliminating shaft; 18. Bottom support shaft; 19. Threaded rod; 20. Square column; 21. Inner cavity; 22. Slideway; 23. Baffle; 24. Bottom block; 25. Base; 26. Vertical plate; 27. Middle groove; 28. Through hole; 29. ​​Limit rod; 30. Pull plate;

[0035] 31. Extension rod; 32. Fixed plate; 33. Spring; 34. Threaded hole; 35. Square groove; 36. Slider; 37. Seat plate; 38. Clamp plate; 39. Limit hole; 40. Buckle groove; 41. Through groove; 100. Limit assembly. DETAILED DESCRIPTION

[0036] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1-Figure 10 The present invention provides a technical solution: a stubble destroyer with easy adjustment of the depth of stubble destroying, the stubble destroyer with easy adjustment of the depth of stubble destroying comprises: a chassis 3, a bracket 1 is arranged above the chassis 3, side frames 5 are arranged on both sides of the chassis 3, threaded holes 34 and square grooves 35 are arranged inside the side frames 5, the square grooves 35 are located directly below the threaded holes 34, a threaded rod 19 is screwed in the threaded holes 34, a bottom of the threaded rod 19 is rotatably connected to a bottom support shaft 18, and a square column 20 is fixedly connected to the bottom of the bottom support shaft 18;

[0038] An inner cavity 21 is provided on the upper surface of the chassis 3, a protective plate 9 is provided in the inner cavity 21, a seat plate 37 is provided on the upper surface of the protective plate 9, a clamping plate 38 is fixed on the surface of the seat plate 37, a limiting hole 39 is provided on the surface of the clamping plate 38, the side frame 5 is divided into an upper and lower part, the upper half of the side frame 5 is mounted on the surface of the box body by bolts, and the lower half of the side frame 5 extends toward the bottom surface, the threaded hole 34 occupies four fifths of the whole side frame 5, the square groove 35 occupies one fifth of the whole side frame 5, and the cross-sectional diameter length of the threaded hole 34 is greater than the diagonal length of the cross-sectional area of ​​the square groove 35;

[0039] The square column 20 is located in the square groove 35, the outer wall of the square column 20 and the inner wall of the square groove 35 are in contact and slidably connected, a bottom block 24 is fixed at the bottom of the square column 20, a moving wheel 6 is rotatably connected to the side of the bottom block 24, a turning handle 4 is fixed at the top of the threaded rod 19, and the square column 20 can be extended into the threaded hole 34;

[0040] When in use, the threaded rod 19 is rotated by manually holding the turning handle 4 and rotating it. The movement of the threaded rod 19 is achieved through the screwing action of the threaded rod 19 and the threaded hole 34, and the bottom support shaft 18 is rotatably connected to the bottom of the threaded rod 19. Therefore, when the threaded rod 19 moves, the bottom support shaft 18 and the square column 20 are driven to move at the same time, so that the bottom block 24 and the moving wheel 6 move synchronously, thereby achieving the adjustment of the height of the chassis 3 and the height of the stubble-cutting shaft 17 inside the chassis 3. When the square column 20 moves, the outer wall of the square column 20 will continuously contact the inner wall of the square groove 35 and continuously slide in connection, providing guidance and support for the movement of the square column 20. At the same time, the square column 20 and the square groove 35 have a rectangular cross-section, which makes the square column 20 unable to rotate, thereby ensuring the stability of the moving wheel 6, so that the moving wheel 6 can be stably towed and moved during the stubble-cutting operation.

[0041] Embodiment 2: On the basis of embodiment 1, a stubble-killing shaft 17 is provided inside the chassis 3, a stubble-killing knife is provided on the stubble-killing shaft 17, two ends of the stubble-killing shaft 17 are rotatably connected to the two sides of the chassis 3, one end of the stubble-killing shaft 17 extends out of the chassis 3 and a driven sprocket 16 is fixed at the end face, a motor 11 is provided on the surface of the chassis 3, the motor 11 is confined in a frame, the frame is fixed to the surface of the chassis 3 by bolts, a transmission shaft 12 is fixedly connected to the output end of the motor 11, a driving sprocket 14 is fixed to the end face of the transmission shaft 12, the driving sprocket 14 and the driven sprocket 16 are connected by a chain 15, a connecting plate 13 is welded on the surface of the chassis 3, the connecting plate 13 is located next to the motor 11, and the transmission shaft 12 is connected to the connecting plate 13 by a bearing;

[0042] When in use, the chassis 3 serves as the main structure of the entire stubble destroyer, bearing and supporting other parts, protecting the internal stubble destroying shaft 17 and the stubble destroying knife, and providing a stable working platform. By starting the motor 11, the output end of the motor 11 will drive the transmission shaft 12 to rotate, and then drive the active sprocket 14 on the end face of the transmission shaft 12 to rotate. Through the transmission of the chain 15, the rotation of the driven sprocket 16 is realized, and then the stubble destroying shaft 17 drives the stubble destroying knife to perform stubble destroying operations. Under the transmission action of the sprocket and the chain 15, the transmission operation is ensured to be carried out continuously and effectively to avoid interruption. The connecting plate 13 is connected to the transmission shaft 12 through a bearing, provides support and guidance for the transmission shaft 12, and improves the stability of the transmission shaft 12;

[0043] The upper surface of the chassis 3 is fixed with a first ear plate 2 and a second ear plate 10. The first ear plate 2 and the second ear plate 10 are provided with two groups. The two groups of first ear plates 2 are symmetrically distributed about the central axis of the chassis surface. The two groups of second ear plates 10 are symmetrically distributed about the central axis of the chassis surface. The bottom of the bracket 1 is connected to the first ear plate 2 and the second ear plate 10 respectively through stud bolts.

[0044] When in use, the bracket 1 provides a stable supporting structure for the stubble remover to ensure the stability and safety of the entire machine during operation. It is connected to the top of the chassis 3 and fixed to the first ear plate 2 and the second ear plate 10 by stud bolts, providing a solid frame for the stubble remover for easy operation and movement. The bracket 1 is provided with mounting holes for easy connection with the operating machine, so that the operating machine can tow the stubble remover.

[0045] Embodiment 3: On the basis of Embodiment 2, two groups of inner cavities 21 are provided, and the two groups of inner cavities 21 are symmetrically distributed about the central axis of the surface of the chassis 3, the stubble-removing shaft 17 is located directly below the inner cavity 21, and two groups of limit assemblies 100 are provided, and the two groups of limit assemblies 100 are respectively located beside the two groups of inner cavities 21, and the base 25 is in the shape of a square plate, and the base 25 is fixed to the surface of the chassis 3 by bolts;

[0046] Two groups of vertical plates 26 symmetrically distributed about the central axis of the surface of the base 25 are fixed on the upper surface of the base 25, and a middle groove 27 is formed between the two groups of vertical plates 26. A through hole 28 is opened on the surface of the vertical plate 26, and a limiting rod 29 is inserted in the through hole 28. A fixed plate 32 is fixed at the end surface of the limiting rod 29. The fixed plate 32 is in the shape of a disc. A spring 33 is provided between the fixed plate 32 and the vertical plate 26. The spring 33 is sleeved on the limiting rod 29. One end of the spring 33 is fixedly connected to the vertical plate 26, and the other end of the spring 33 is fixedly connected to the fixed plate 32. An extension rod 31 is fixed on the surface of the fixed plate 32. A clamping plate 38 is fixed on the end surface of the extension rod 31. The clamping plate 38 is in the shape of a "one";

[0047] When in use, the inner cavity 21 is located just above the stubble-killing shaft 17. When the stubble-killing shaft 17 needs to be inspected and maintained, the protective plate 9 needs to be opened. The specific operation is as follows: an operator manually holds the pull plate 30 and pulls it, which drives the limit rod 29 to move, so that the limit rod 29 is pulled out of the limit hole 39. At this time, the limit on the clamping plate 38 and the protective plate 9 is released. At this time, the operator on the other side inserts a finger into the buckle groove 40 and pulls it, which drives the protective plate 9 to move in the inner cavity 21, so that the protective plate 9 is pulled out of the through groove 41, thereby opening the inner cavity 21 for easy inspection and maintenance.

[0048] When it is necessary to close the protective plate 9, an operator pushes the sealing plate 8 to drive the protective plate 9 to move in the inner cavity 21, so that the protective plate 9 is constantly close to the limit assembly 100. At the same time, another operator manually pulls the pull plate 30 to drive the limit rod 29 to move, so that the end face of the limit rod 29 is removed from the middle groove 27. At this time, the spring 33 will be stretched and store elastic potential energy. As the protective plate 9 continues to move, it will drive the card plate 38 to move into the middle groove 27, so that the limit hole 39 and the through hole 28 correspond. At this time, the pulling force on the pull plate 30 is cancelled. Under the rebound action of the spring 33, the limit rod 29 will be automatically inserted into the limit hole 39 to limit the protective plate 9. Figure 7 As shown, the pull plate 30 is in a "I" shape, which is convenient for the operator to hold and pull. The extension plate extends the length of the limit rod 29, so that the pull plate 30 is farther, which is convenient for the operator to hold;

[0049] A baffle 23 is fixed on the inner surface of the inner cavity 21 near the center axis of the box body. The baffle 23 is made of rubber. Slide grooves 22 are provided on the inner walls of both sides of the inner cavity 21. Through grooves 41 are provided on both sides of the box body. The through grooves 41 and the sides of the inner cavity 21 are located. Slide blocks 36 are fixed on both sides of the protective plate 9. The slide blocks 36 are located in the slide grooves 22 and are slidably connected. The protective plate 9 can move in the through grooves 41. One end of the protective plate 9 contacts and presses against the baffle 23. The other end of the protective plate 9 is fixed with a sealing plate 8.

[0050] When in use, when the protective plate 9 is constantly approaching the limit assembly 100, the protective plate 9 will eventually contact and press against the baffle 23, and the baffle 23 will be deformed, thereby providing a buffer to prevent the protective plate 9 and the chassis 3 from direct contact and wear. When the protective plate 9 moves, the slider 36 correspondingly slides in the slide groove 22 to provide guidance and support for the movement of the protective plate 9, thereby preventing the protective plate 9 from getting stuck.

[0051] The cross section of the sealing plate 8 is larger than the cross section of the through groove 41, and the sealing plate 8 contacts and presses against the side of the box body. The seat plate 37 is fixed to the protective plate 9 by bolts, and the seat plate 37 is arranged away from the sealing plate 8. The clamping plate 38 faces the central axis of the surface of the chassis 3, and the clamping plate 38 is inserted into the middle groove 27. The limiting rod 29 is inserted into the limiting hole 39. A support plate 7 is fixed at the center position of the surface of the sealing plate 8. The cross section of the support plate 7 is a right-angled triangle. The right-angled side of one side of the support plate 7 and the sealing plate 8, and the right-angled plate of the other side of the support plate 7 faces the bottom surface and has a buckle groove 40 on the surface;

[0052] During use, when the protective plate 9 is limited, the sealing plate 8 will contact the side of the box body and press tightly to close the through groove 41. The support plate 7 is fixed on the sealing plate 8, and a buckle groove 40 is opened on the support plate 7, which is convenient for the operator to insert his fingers into the buckle groove 40 and pull, thereby driving the protective plate 9 to move.

[0053] In actual use, when it is necessary to adjust the depth of stubble killing, the specific operation is as follows: by manually holding the turning handle 4 and rotating it, the rotation of the threaded rod 19 is realized, and the movement of the threaded rod 19 is realized under the screw connection between the threaded rod 19 and the threaded hole 34, and the bottom support shaft 18 is rotated and connected to the bottom of the threaded rod 19. Therefore, when the threaded rod 19 moves, the bottom support shaft 18 and the square column 20 are driven to move at the same time, so that the bottom block 24 and the moving wheel 6 move synchronously, thereby realizing the adjustment of the height of the chassis 3 and the height of the stubble killing shaft 17 inside the chassis 3; when the stubble killing shaft 17 needs to be inspected and maintained, the protective plate 9 needs to be opened. The specific operation is as follows: an operator manually holds the pull plate 30 and pulls it, which will drive the limit rod 29 to move, so that the limit rod 29 is pulled out of the limit hole 39. At this time, the limit on the card plate 38 and the protective plate 9 is released. At this time, the operator on the other side Inserting a finger into the buckle groove 40 and pulling it will drive the protective plate 9 to move in the inner cavity 21, so that the protective plate 9 is pulled out from the through groove 41, thereby opening the inner cavity 21 for easy inspection and maintenance; when the protective plate 9 needs to be closed, the operation is as follows: an operator pushes the sealing plate 8 to drive the protective plate 9 to move in the inner cavity 21, so that the protective plate 9 continues to approach the limit assembly 100, and at the same time, another operator manually pulls the pull plate 30 to drive the limit rod 29 to move, so that the end face of the limit rod 29 is moved away from the middle groove 27. At this time, the spring 33 will be stretched and store elastic potential energy. As the protective plate 9 continues to move, it will drive the card plate 38 to move into the middle groove 27, and the limit hole 39 and the through hole 28 will correspond. At this time, the pulling force on the pull plate 30 is cancelled, and under the rebound action of the spring 33, the limit rod 29 will be automatically inserted into the limit hole 39 to limit the protective plate 9.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stubble destroyer that can easily adjust the depth of stubble destroying, characterized by: The stubble destroyer with easy adjustment of the stubble destroying depth comprises: a chassis (3), a bracket (1) is arranged above the chassis (3), side frames (5) are arranged on both sides of the chassis (3), threaded holes (34) and square grooves (35) are arranged inside the side frames (5), the square grooves (35) are located directly below the threaded holes (34), a threaded rod (19) is screwed into the threaded holes (34), a bottom of the threaded rod (19) is rotatably connected to a bottom support shaft (18), and a square column (20) is fixedly connected to the bottom of the bottom support shaft (18); The upper surface of the chassis (3) is provided with an inner cavity (21), a protective plate (9) is arranged in the inner cavity (21), a seat plate (37) is arranged on the upper surface of the protective plate (9), a clamping plate (38) is fixed on the surface of the seat plate (37), and a limiting hole (39) is arranged on the surface of the clamping plate (38); The limiting assembly (100) comprises a base (25), a vertical plate (26), a limiting rod (29), a spring (33), a fixed plate (32), an extension rod (31) and a pull plate (30); the limiting assembly (100) is arranged on the upper surface of the chassis (3).

2. The stubble destroyer with easily adjustable stubble destroying depth according to claim 1, characterized in that: A stubble-removing shaft (17) is arranged inside the chassis (3), a stubble-removing knife is arranged on the stubble-removing shaft (17), two ends of the stubble-removing shaft (17) are rotatably connected to two sides of the chassis (3), one end of the stubble-removing shaft (17) extends outside the chassis (3) and a driven sprocket (16) is fixed on the end surface.

3. The stubble destroyer with easily adjustable stubble destroying depth according to claim 1, characterized in that: The surface of the chassis (3) is provided with a motor (11), the motor (11) is confined in a frame, the frame is fixed to the surface of the chassis (3) by bolts, the output end of the motor (11) is fixedly connected to a transmission shaft (12), the end surface of the transmission shaft (12) is fixed with a driving sprocket (14), the driving sprocket (14) and the driven sprocket (16) are connected by a chain (15), a connecting plate (13) is welded on the surface of the chassis (3), the connecting plate (13) is located beside the motor (11), and the transmission shaft (12) is connected to the connecting plate (13) by a bearing.

4. The stubble destroying machine with easily adjustable stubble destroying depth according to claim 1, characterized in that: A first ear plate (2) and a second ear plate (10) are fixed on the upper surface of the chassis (3); the first ear plate (2) and the second ear plate (10) are each provided with two groups; the two groups of first ear plates (2) are symmetrically distributed about the central axis of the chassis surface; the two groups of second ear plates (10) are symmetrically distributed about the central axis of the chassis surface; the bottom of the bracket (1) is connected to the first ear plate (2) and the second ear plate (10) respectively by stud bolts.

5. The stubble destroyer with easily adjustable stubble destroying depth according to claim 1, characterized in that: The side frame (5) is divided into an upper and lower part. The upper part of the side frame (5) is mounted on the surface of the box body by bolts, and the lower part of the side frame (5) extends toward the bottom surface. The threaded hole (34) occupies four fifths of the entire side frame (5), and the square groove (35) occupies one fifth of the entire side frame (5). The cross-sectional diameter length of the threaded hole (34) is greater than the diagonal length of the cross-sectional area of ​​the square groove (35).

6. The stubble destroyer with easily adjustable stubble destroying depth according to claim 1, characterized in that: The square column (20) is located in the square groove (35), the outer wall of the square column (20) and the inner wall of the square groove (35) are in contact and slidably connected, a bottom block (24) is fixed at the bottom of the square column (20), a moving wheel (6) is rotatably connected to the side of the bottom block (24), a turning handle (4) is fixed at the top of the threaded rod (19), and the square column (20) can be extended into the threaded hole (34).

7. The stubble destroyer with easily adjustable stubble destroying depth according to claim 1, characterized in that: The inner cavity (21) is provided with two groups, and the two groups of inner cavities (21) are symmetrically distributed about the central axis of the surface of the chassis (3). The stubble-removing shaft (17) is located directly below the inner cavity (21). The limit assembly (100) is provided with two groups, and the two groups of limit assemblies (100) are respectively located beside the two groups of inner cavities (21). The base (25) is in the shape of a square plate, and the base (25) is fixed to the surface of the chassis (3) by bolts.

8. The stubble destroyer with easily adjustable stubble destroying depth according to claim 7, characterized in that: Two groups of vertical plates (26) symmetrically distributed about the center axis of the surface of the base (25) are fixed on the upper surface of the base (25), a middle groove (27) is formed between the two groups of vertical plates (26), a through hole (28) is opened on the surface of the vertical plate (26), a limiting rod (29) is inserted in the through hole (28), a fixed disk (32) is fixed at the end surface of the limiting rod (29), the fixed disk (32) is in the shape of a disk, a spring (33) is arranged between the fixed disk (32) and the vertical plate (26), the spring (33) is sleeved on the limiting rod (29), one end of the spring (33) is fixedly connected to the vertical plate (26), the other end of the spring (33) is fixedly connected to the fixed disk (32), an extension rod (31) is fixed on the surface of the fixed disk (32), a clamping plate (38) is fixed on the end surface of the extension rod (31), and the clamping plate (38) is in the shape of a "I".

9. The stubble destroyer with easily adjustable stubble destroying depth according to claim 1, characterized in that: A baffle (23) is fixed on the inner surface of the inner cavity (21) near the center axis of the box body, and the baffle (23) is made of rubber. Slide grooves (22) are provided on the inner walls on both sides of the inner cavity (21), and through grooves (41) are provided on both sides of the box body. The through grooves (41) and the sides of the inner cavity (21) are provided with sliders (36) fixed on both sides of the protective plate (9). The sliders (36) are located in the slide grooves (22) and are slidably connected. The protective plate (9) can move in the through grooves (41), and one end of the protective plate (9) is in contact with and tightly pressed against the baffle (23), and the other end of the protective plate (9) is fixed with a sealing plate (8).

10. The stubble destroying machine with easily adjustable stubble destroying depth according to claim 9, characterized in that: The cross section of the sealing plate (8) is larger than the cross section of the through groove (41), the sealing plate (8) contacts and presses against the side surface of the box body, the seat plate (37) is fixed on the protective plate (9) by bolts, the seat plate (37) is arranged away from the sealing plate (8), the clamping plate (38) faces the central axis of the surface of the chassis (3), the clamping plate (38) is inserted into the middle groove (27), the limiting rod (29) is inserted into the limiting hole (39), a support plate (7) is fixed at the center position of the surface of the sealing plate (8), the cross section of the support plate (7) is a right triangle, one side of the support plate (7) has a right angle side and the sealing plate (8), and the other side of the support plate (7) has a right angle plate facing the bottom surface and a buckle groove (40) is opened on the surface.

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