Root crushing drill bit assembly based on straw return to the field

Abstract

This invention relates to the field of farmland treatment technology, specifically to a fixed-point root crushing drill bit assembly based on straw return to the field. It includes a concave main frame and an inverted concave auxiliary frame for connecting to an external machine. The main frame and auxiliary frame are fixedly connected vertically. A drill rod is also provided on the top of the auxiliary frame, and the top of the drill rod is connected to an external power structure. A first sliding frame and a second sliding frame are respectively embedded and fixed on the bottom surface of the main frame along the front-rear direction. A positioning hook module and a dynamic crushing module are respectively installed at the first and second sliding frames, and a dynamic repositioning module is provided between them. This invention achieves integrated processing of straw root positioning, loosening, extraction, cleaning, and dynamic crushing through multi-module collaborative operation. It effectively solves problems such as incomplete root processing, easy entanglement of blades, and low operating efficiency during straw return to the field, thereby achieving efficient and precise processing of straw roots.

Description

Technical Field

[0001] This invention relates to the field of farmland treatment technology, specifically to a fixed-point root crushing drill bit assembly based on straw return to the field. Background Technology

[0002] Returning straw to the field is an important measure to improve soil organic matter and achieve sustainable agricultural development. Currently, field straw treatment mainly relies on two types of equipment: straw returning machines and stubble crushers. Straw returning machines typically use rotary tillers, hammers, and other components to crush and mix straw above the ground, but they have limited capacity to handle crop roots buried deep in the soil, resulting in a large amount of root residue and affecting the quality of subsequent sowing operations. For example, the straw stubble crusher and returning machine with patent number CN205232709U can only crush straw scattered in the field using crushing rollers.

[0003] However, most of the aforementioned devices and existing equipment use fixed or simple rotary blades, which are not only limited in function but also difficult to effectively loosen and separate the complex and intertwined deep root networks. After the operation, a large number of long root segments remain in the soil, failing to achieve the ideal effect of crushing and returning the soil to the field. At the same time, fixed blades are easily damaged by hard obstacles during operation, increasing the maintenance cost and downtime of the equipment, which in turn leads to a decrease in operating efficiency.

[0004] To address this technical deficiency, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to achieve integrated processing of straw rootstock positioning, loosening, extraction, cleaning, and dynamic crushing through multi-module collaborative operation. This effectively solves problems such as incomplete root treatment, easy entanglement of blades, and low work efficiency during straw return to the field, thereby achieving efficient and precise processing of straw roots.

[0006] The objective of this invention can be achieved through the following technical solution: a fixed-point root crushing drill bit assembly based on straw returning to the field, comprising a concave main frame and an inverted concave auxiliary frame for connecting to an external machine, wherein the main frame and the auxiliary frame are fixedly connected in the vertical direction, and a drill rod is provided on the top of the auxiliary frame, wherein the top of the drill rod is connected to an external power structure, and a first sliding frame and a second sliding frame are respectively embedded and fixed on the bottom surface of the main frame in the front-back direction, wherein a positioning hook module and a dynamic crushing module are respectively assembled at the first sliding frame and the second sliding frame, and a dynamic displacement module is provided between the two.

[0007] The positioning hook module includes an inverted T-shaped upright rod that runs longitudinally through the inside of the first sliding frame, and the bottom of the inverted T-shaped upright rod extends to the outside of the first sliding frame and is fitted with a bottom cylinder. A spring damping shock absorber ring is provided between the inner wall of the bottom of the bottom cylinder and the bottom surface of the inverted T-shaped upright rod. A horizontal frame is fixedly installed at the bottom of the bottom cylinder, and the length of the horizontal frame is three-quarters of the length of the first sliding frame. Several sets of hook plates with tapered ends are installed at equal intervals at the bottom of the horizontal frame.

[0008] Furthermore, the positioning hook module also includes a cylinder 1 located at the center of the front end of the first slide frame, and a movable pressure plate is fixedly installed at the output shaft of the front end of the cylinder 1. Several sets of longitudinal insert plates are fixedly installed at equal intervals along the length direction of the bottom of the movable pressure plate, and the longitudinal insert plates are located at the upper end of the interval between two adjacent sets of hook plates.

[0009] Furthermore, the dynamic crushing module includes a second upright rod that runs longitudinally through the interior of the second sliding frame. Both the second upright rod and the top surface of the inverted T-shaped upright rod are fixedly fitted with a double-shaft sleeve. The bottom of the second upright rod extends to the outside of the second sliding frame and is fixedly installed with a long frame. The length of the long frame is three-quarters of the length of the second sliding frame. Several sets of rotating drums are rotatably installed at equal intervals inside the long frame. A first cutter is fixedly installed at the bottom of the rotating drum along the width direction of the second sliding frame, and the bottom surface of the first cutter is set with a conical structure.

[0010] Furthermore, a vertical toothed roller is fixedly installed on the top of the rotating drum via a shaft, and the vertical toothed roller meshes with a vertical toothed rack fixedly installed on the inner wall of the rear end of the second slide frame. Several concave material feeding frames are fixedly installed at equal intervals on the rear end face of the long frame.

[0011] Furthermore, the dynamic positioning module includes a dual-axis motor that runs through the center of the top surface of the main frame, and a turntable is fixedly sleeved on the top output shaft of the dual-axis motor. A vertical shaft is fixedly installed on the top surface of the turntable at the center of its edge. A sliding strip is sleeved on the outside of the vertical shaft, and the front and rear ends of the sliding strip are respectively sleeved on the corresponding dual-axis sleeves.

[0012] Furthermore, a transverse limiting frame is fitted onto the outside of the skateboard strip and at the rear end of the turntable, and a transverse groove adapted to the transverse limiting frame is opened inside the transverse limiting frame. A cylinder is provided between the bottom of the transverse limiting frame and the top surface of the main frame.

[0013] Furthermore, the bottom shaft of the dual-axis motor extends to the bottom of the main frame and is fixedly installed with a movable stop cylinder. Movable shaft pins are fixedly installed at the center of the front and rear outer walls of the movable stop cylinder. A shift cylinder is movably installed at the front and rear ends of the movable stop cylinder. A T-shaped lifting rod is fixedly installed in each set of shift cylinders, and the top of the T-shaped lifting rod extends to the upper end of the main frame. A pressure spring coil is wound around the outside of the T-shaped lifting rod between the shift cylinder and the bottom surface of the main frame.

[0014] Furthermore, the outer wall of the transposition cylinder is provided with corrugated grooves distributed in a ring, and the two sets of movable shaft pins are respectively slidably connected in the corresponding corrugated grooves. A second cutter is fixedly installed at the bottom of the transposition cylinder along the length direction of the main frame, and the bottom surface of the second cutter has a conical structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention, by setting up a positioning hook module, firstly allows the conical hook plate to quickly insert into and position the straw on the soil surface. Through the synchronous left and right reciprocating motion driven by a dual-axis motor, the hook plate is pulled to swing, which fully loosens the root branches that are deep in the soil, laying the foundation for subsequent lifting. Secondly, the lifting function of the dynamic displacement module can drive the hook plate to lift precisely, so that the root and branch roots can be completely separated from the ground. At the same time, the pushing action of the longitudinal insertion plate effectively avoids the roots from getting tangled in the hook plate, ensuring the continuity of operation and improving the efficiency of operation.

[0017] 2. This invention adopts a composite crushing design to improve the quality of straw returning to the field. First, the first cutter combines reciprocating movement and rotary cutting, and its conical structure can accurately cut into the straw roots on the soil surface for a more thorough cut. The flipping action of the concave feeding frame ensures that the crushed material is evenly spread, avoiding local accumulation and ensuring uniformity of returning to the field. Second, the pre-cutting function of the second cutter can pre-process the surface straw and coarse roots. The cross-shaped vertical cutter setting achieves bidirectional cutting in both horizontal and vertical directions, which not only reduces the burden of subsequent crushing but also avoids cutting jams caused by straw roots entanglement, further improving the crushing fineness.

[0018] In summary, the modules work together to achieve integrated operation from root and stem positioning, loosening, lifting, root system ejection to crushing, shortening the operation process and increasing the output per unit time. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the main frame and its surface structure assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the first sliding frame and the positioning hook module assembly of the present invention;

[0023] Figure 4 This is a top view of the main frame of the present invention;

[0024] Figure 5 This is a schematic diagram of the combination of the second sliding frame and the dynamic crushing module in this invention;

[0025] Figure 6 This is a schematic diagram of the bottom structure of the main frame of the present invention;

[0026] Figure 7 This is a side sectional view of the main frame and the dynamic positioning module of the present invention.

[0027] In the diagram: 1. Main frame; 2. Sub-frame; 3. First sliding frame; 4. Second sliding frame; 5. Positioning hook module; 51. Inverted T-shaped upright; 52. Bottom cylinder; 53. Spring damping shock absorber ring; 54. Horizontal frame; 55. Hook plate; 56. Cylinder 1; 57. Movable pressure plate; 58. Longitudinal insert plate; 6. Dynamic crushing module; 61. Upright 2; 62. Double-shaft sleeve; 63. Long frame; 64. Rotary drum; 65. First cutter; 66. Vertical toothed roller; 67. Concave feeding frame; 7. Dynamic shifting module; 71. Dual-shaft motor; 72. Turntable; 73. Vertical shaft; 731. Slide strip; 74. Lateral limit frame; 75. Cylinder 2; 76. Movable stop cylinder; 77. Movable shaft pin; 78. Shifting cylinder; 79. T-shaped lifting rod; 710. Pressure spring coil; 711. Second cutter. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1 - Figure 7 As shown, the fixed-point root crushing drill bit assembly based on straw returning to the field includes a concave main frame 1 and an inverted concave auxiliary frame 2 for connecting to an external machine. The main frame 1 and the auxiliary frame 2 are fixedly connected in the vertical direction. A drill rod is also provided on the top of the auxiliary frame 2, and the top of the drill rod is connected to an external power structure. A first sliding frame 3 and a second sliding frame 4 are respectively embedded and fixed on the bottom surface of the main frame 1 in the front and rear direction. A positioning hook module 5 and a dynamic crushing module 6 are respectively installed at the first sliding frame 3 and the second sliding frame 4, and a dynamic displacement module 7 is provided between the two.

[0030] The positioning hook module 5 includes an inverted T-shaped upright 51 that runs longitudinally through the inside of the first sliding frame 3. The bottom of the inverted T-shaped upright 51 extends to the outside of the first sliding frame 3 and is fitted with a bottom cylinder 52. A spring damping shock absorber ring 53 is provided between the bottom inner wall of the bottom cylinder 52 and the bottom surface of the inverted T-shaped upright 51. A horizontal frame 54 is fixedly installed at the bottom of the bottom cylinder 52. The length of the horizontal frame 54 is three-quarters of the length of the first sliding frame 3. Several sets of hook plates 55 with tapered ends are installed at equal intervals at the bottom of the horizontal frame 54. The positioning hook module 5 also includes a cylinder 56 located at the center of the front end of the first sliding frame 3. A movable pressure plate 57 is fixedly installed at the output shaft of the front end of the cylinder 56. Several sets of longitudinal insert plates 58 are fixedly installed at equal intervals along the length direction of the bottom of the movable pressure plate 57. The longitudinal insert plates 58 are located at the upper end of the interval between two adjacent sets of hook plates 55.

[0031] The dynamic crushing module 6 includes a vertical rod 61 that runs longitudinally through the inside of the second sliding frame 4. The top surfaces of the vertical rod 61 and the inverted T-shaped vertical rod 51 are both fixedly sleeved with a double-shaft sleeve 62. The dynamic repositioning module 7 includes a double-shaft motor 71 that runs through the center of the top surface of the main frame 1. The top output shaft of the double-shaft motor 71 is fixedly sleeved with a turntable 72. A vertical shaft 73 is fixedly installed at the center of the edge of the top surface of the turntable 72. A sliding strip 731 is sleeved on the outside of the vertical shaft 73. The front and rear ends of the sliding strip 731 are respectively sleeved on the corresponding double-shaft sleeves 62. A transverse limiting frame 74 is sleeved on the outside of the sliding strip 731 and at the rear end of the turntable 72. A transverse groove adapted to the transverse limiting frame 74 is opened inside the transverse limiting frame 74. A cylinder 75 is provided between the bottom of the transverse limiting frame 74 and the top surface of the main frame 1.

[0032] First, the inverted concave sub-frame 2 is fixedly connected to an external traction or drive device such as a tractor to obtain the moving power required for operation. The top of the drill rod is connected to the external power structure to provide power for drilling up and down. The main frame 1, as the core load-bearing structure, provides the installation benchmark and motion guide for the positioning hook module 5, the dynamic crushing module 6 and the dynamic repositioning module 7, ensuring that the actions of each module are precise and coordinated.

[0033] In the initial stage of operation, several hook plates 55 move along the soil surface, using their tips to insert and position the exposed straw on the soil surface. Then, the dual-shaft motor 71 is started, which first drives the turntable 72 to rotate, the vertical shaft 73 to make circular motion, and drives the two sets of dual-shaft sleeves 62 to reciprocate left and right through the sliding strip 731. Since the two sets of dual-shaft sleeves 62 are fixed to the inverted T-shaped upright 51 and the second upright 61 respectively, the components connected to the inverted T-shaped upright 51 and the second upright 61 are forced to move left and right synchronously. The reciprocating motion involves the inverted T-shaped upright 51 pulling the horizontal frame 54 and several sets of hook plates 55 to move back and forth, thereby swinging the hooked rootstock end so that the branches deep in the soil can be loosened more thoroughly. After a period of reciprocating swinging, the cylinder 75 is activated, which uses its output shaft to push the horizontal limiting frame 74 to move upward. The horizontal limiting frame 74 drives the sliding plate 731 to slide upward along the vertical axis 73, thereby changing the position of the inverted T-shaped upright 51 and the upright 61.

[0034] Similarly, the inverted T-shaped upright 51 pulls the horizontal frame 54 and several sets of hook plates 55 upward to lift the loose rootstock upward until the rootstock and its branch roots are detached from the ground. During the lifting process of the hook plates 55, several sets of longitudinal insert plates 58 are inserted into the gaps between adjacent continuous hook plates 55. Then, the cylinder 56 is activated, which uses its output shaft to push the movable pressure plate 57 and the longitudinal insert plates 58 forward. The moving longitudinal insert plates 58 push out the root system wrapped around the hook plates 55 and stop it on the bottom surface.

[0035] This ingenious structural design allows for the rapid loosening and lifting of the roots and stems. This not only facilitates further and complete crushing of the straw and roots but also prevents the roots from becoming excessively entangled at the hook plate 55, thus affecting the efficiency of subsequent operations. After the loosening, lifting, and root removal operations are completed, the dynamic crushing module 6 begins to function, crushing the straw and roots remaining on the soil surface.

[0036] It is worth noting that the spring damping shock absorber 53 plays an important role in the entire operation. When the hook plate 55 moves along the soil surface, the spring damping shock absorber 53 can effectively buffer the uneven soil texture or encounter greater resistance, and provide a certain range of vertical position adjustment.

[0037] Example 2: Please refer to Figure 2 - Figure 7As shown, the bottom of the second upright 61 extends to the outside of the second sliding frame 4 and is fixedly installed with a long frame 63. The length of the long frame 63 is three-quarters of the length of the second sliding frame 4. Several sets of rotating cylinders 64 are rotatably installed at equal intervals inside the long frame 63. A first cutter 65 is fixedly installed at the bottom of the rotating cylinder 64 along the width direction of the second sliding frame 4. The bottom surface of the first cutter 65 is set with a conical structure. A vertical toothed roller 66 is fixedly installed at the top of the rotating cylinder 64 through a shaft. The vertical toothed roller 66 meshes with a vertical toothed rack fixedly installed on the inner wall of the rear end of the second sliding frame 4. Several concave material feeding frames 67 are fixedly installed at equal intervals on the rear end face of the long frame 63.

[0038] Root crushing stage: As shown in Example 1, after the loosening, lifting, and root expulsion operations of the rhizomes are completed, the dynamic crushing module 6 enters the root crushing stage. First, the cylinder 75 drives the transverse limiting frame 74, the sliding plate 731, and the upright 61 to settle and return to their positions. Several sets of first cutters 65 settle simultaneously, and the conical structure on the bottom surface of the first cutter 65 contacts the rhizomes on the soil surface and cuts them vertically. Then, the dual-axis motor 71 continues to operate, driving the upright 61 to reciprocate left and right through the turntable 72, the vertical shaft 73, and the sliding plate 731. The second upright pole 61 then drives the long frame 63, the rotating drum 64, the first cutter 65, the vertical toothed roller 66, and the concave feeding frame 67 to move back and forth synchronously. During the movement, since the vertical toothed roller 66 meshes with the vertical toothed rack fixedly installed on the inner wall of the rear end of the second sliding frame 4, when the long frame 63 moves left and right, the vertical toothed roller 66 will rotate, thereby driving the rotating drum 64 to rotate. The rotation of the rotating drum 64 causes the first cutter 65 fixedly installed at its bottom to make a circular motion, which can more effectively cut into the straw and roots left on the soil surface and cut and crush them.

[0039] Meanwhile, as the concave feeding frame 67 moves back and forth, it turns over the straw and roots cut on the soil surface, forcing the chopped material to be evenly spread on the soil surface, further improving the quality and efficiency of straw return to the field.

[0040] Example 3: Please refer to Figure 7As shown, the bottom shaft of the dual-axis motor 71 extends to the bottom of the main frame 1 and is fixedly installed with a movable abutment cylinder 76. Movable shaft pins 77 are fixedly installed at the center of the front and rear outer walls of the movable abutment cylinder 76. The front and rear ends of the movable abutment cylinder 76 are respectively movably installed with shift cylinders 78. Each shift cylinder 78 is fixedly installed with a T-shaped lifting rod 79, and the top of the T-shaped lifting rod 79 extends to the upper end of the main frame 1. A pressure spring coil 710 is wound around the outside of the T-shaped lifting rod 79 between the shift cylinder 78 and the bottom surface of the main frame 1. While the second cutter 711 moves up and down to perform pre-cutting, the pressure spring coil 710 can play a role in buffering and resetting, ensuring the stability of the movement of the shift cylinder 78 and the second cutter 711. The outer wall of the shift cylinder 78 is provided with corrugated grooves distributed in a ring. The two sets of movable shaft pins 77 are slidably connected in the corresponding corrugated grooves. The bottom of the shift cylinder 78 is fixedly installed with the second cutter 711 along the length direction of the main frame 1, and the bottom surface of the second cutter 711 has a conical structure.

[0041] As the main frame 1 moves, before the first cutter 65 contacts the rootstock and branch roots, the second cutter 711 will pre-cut the straw and thicker roots on the soil surface. As the movable cylinder 76 rotates continuously under the drive of the dual-axis motor 71, the movable shaft pin 77 slides in the corrugated groove on the outer wall of the shift cylinder 78, forcing the shift cylinder 78 to drive the T-shaped lifting rod 79 and the second cutter 711 to move up and down. The conical structure on the bottom of the second cutter 711 can better cut into the soil and perform preliminary cutting operations on the straw and roots.

[0042] It is worth noting that the second cutter 711 and the first cutter 65 are arranged in a cross-shaped perpendicular structure. This not only reduces the workload of the first cutter 65, but also allows for a more thorough cutting of straw and roots through sequential horizontal and vertical cutting, effectively avoiding the problem of uneven cutting caused by the entanglement of straw and roots. At the same time, the second cutter 711 can also loosen the soil layer to a certain extent during its up-and-down reciprocating motion, which is conducive to the first cutter 65 cutting deeper into the soil layer and performing more fine crushing of the rhizomes and branch roots, greatly improving the efficiency and quality of straw returning to the field.

[0043] The entire process is closely coordinated among all modules, from root and stem positioning, loosening, lifting, root system pushing out to final dynamic crushing, all done in one go, greatly improving the efficiency and quality of straw returning to the field.

[0044] Working principle: When in use, the present invention is first fixedly connected to an external traction or drive device such as a tractor through the inverted concave sub-frame 2 to obtain the moving power required for operation, and the top of the drill rod is connected to the external power structure to provide the power for drilling up and down. The main frame 1, as the core load-bearing structure, provides the installation benchmark and motion guide for the positioning hook module 5, the dynamic crushing module 6 and the dynamic repositioning module 7, ensuring that the actions of each module are precise and coordinated.

[0045] During the operation, the positioning hook module 5 uses the hook plate 55 to first insert and position the exposed straw on the soil surface. Then, under the action of the dynamic repositioning module 7, the dual-axis motor 71 drives the turntable 72 to rotate, which in turn makes the vertical axis 73 perform a circular motion. The sliding strip 731 drives the inverted T-shaped pole 51 to move back and forth, so that the hooked root end swings and penetrates into the loosened branches in the soil. After a period of swinging, the cylinder 2 75 pushes the horizontal limit frame 74 to move upward, changing the position of the inverted T-shaped pole 51, so that it pulls the horizontal frame 54 and the hook plate 55 to lift upward, lifting the loosened root and detaching it from the ground. During the lifting process, the longitudinal insertion plate 58 is inserted into the gap of the hook plate 55, and the cylinder 1 56 pushes the movable pressure plate 57 and the longitudinal insertion plate 58 to move forward, pushing out the roots wrapped around the hook plate 55.

[0046] After the root and stem processing is completed, the dynamic crushing module 6 starts to work. Cylinder 2 75 drives the upright rod 2 61 to sink and return to its position. The first cutter 65 sinks and contacts the root and stem on the soil surface to cut them. The dual-shaft motor 71 runs continuously, driving the upright rod 2 61 to move back and forth left and right through the turntable 72, vertical shaft 73 and sliding bar 731. The upright rod 2 61 drives the long frame 63, the rotating drum 64, the first cutter 65, the vertical toothed roller 66 and the concave feeding frame 67 to move synchronously. Because the vertical toothed roller 66 meshes with the vertical toothed rack, the vertical toothed roller 66 rotates when the long frame 63 moves left and right, driving the rotating drum 64 to rotate, so that the first cutter 65 makes a circular motion, which can more effectively cut into the straw and roots for cutting and crushing. At the same time, the concave feeding frame 67 moves back and forth left and right to turn over the crushed material and spread it evenly on the soil surface.

[0047] During the movement of the main frame 1, the second cutter 711, driven by the dual-shaft motor 71, reciprocates up and down through the cooperation of the movable stop cylinder 76, the movable shaft pin 77, and the shifting cylinder 78, pre-cutting the straw and thicker roots on the soil surface. The second cutter 711 and the first cutter 65 are arranged in a cross-shaped vertical structure, reducing the workload of the first cutter 65. By cutting horizontally and vertically in sequence, the straw and roots are cut more thoroughly, avoiding entanglement problems. The reciprocating motion of the second cutter 711 can also loosen the soil layer, which is conducive to the first cutter 65 cutting deeper into the soil layer for fine crushing. All modules of the entire device work closely together, from root and stem positioning to dynamic crushing, to efficiently complete the straw return to the field operation, improving the efficiency and quality of the operation.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fixed-point root crushing drill bit assembly based on straw return to the field, characterized in that: It includes a concave main frame (1) and an inverted concave sub-frame (2) for connecting external machines. The main frame (1) and the sub-frame (2) are fixedly connected in the vertical direction. The top of the sub-frame (2) is also provided with a drill rod, and the top of the drill rod is connected to an external power structure. The bottom surface of the main frame (1) is respectively fitted with a first sliding frame (3) and a second sliding frame (4) in the front-back direction. The first sliding frame (3) and the second sliding frame (4) are respectively equipped with a positioning hook module (5) and a dynamic crushing module (6), and a dynamic displacement module (7) is provided between the two. The positioning hook module (5) includes an inverted T-shaped upright (51) that runs longitudinally through the inside of the first sliding frame (3), and the bottom of the inverted T-shaped upright (51) extends to the outside of the first sliding frame (3) and is fitted with a bottom cylinder (52). A spring damping shock absorber (53) is provided between the bottom inner wall of the bottom cylinder (52) and the bottom surface of the inverted T-shaped upright (51). A horizontal frame (54) is fixedly installed at the bottom of the bottom cylinder (52), and the length of the horizontal frame (54) is three-quarters of the length of the first sliding frame (3). Several sets of hook plates (55) with tapered ends are installed at equal intervals at the bottom of the horizontal frame (54). The dynamic crushing module (6) includes a second upright rod (61) that runs longitudinally through the inside of the second sliding frame (4). The top surfaces of the second upright rod (61) and the inverted T-shaped upright rod (51) are both fixedly sleeved with a double-shaft sleeve (62). The bottom of the second upright rod (61) extends to the outside of the second sliding frame (4) and is fixedly installed with a long frame (63). The length of the long frame (63) is three-quarters of the length of the second sliding frame (4). Several sets of rotating cylinders (64) are rotatably installed at equal intervals inside the long frame (63). The bottom of the rotating cylinder (64) is fixedly installed with a first cutter (65) along the width direction of the second sliding frame (4). The bottom surface of the first cutter (65) is set with a conical structure. The top of the rotating drum (64) is fixedly installed with a vertical toothed roller (66) via a shaft, and the vertical toothed roller (66) meshes with a vertical toothed rack fixedly installed on the inner wall of the rear end of the second slide frame (4). Several concave material feeding frames (67) are fixedly installed at equal intervals on the rear end face of the long frame (63). The dynamic positioning module (7) includes a dual-axis motor (71) that runs through the center of the top surface of the main frame (1), and a turntable (72) is fixedly sleeved on the top output shaft of the dual-axis motor (71), and a vertical shaft (73) is fixedly installed on the top surface of the turntable (72) at the center of the edge. A sliding strip (731) is sleeved on the outside of the vertical shaft (73), and the front and rear ends of the sliding strip (731) are respectively sleeved on the corresponding dual-axis sleeve (62). The skateboard strip (731) is fitted with a transverse limiting frame (74) on the outside and at the rear end of the turntable (72). The transverse limiting frame (74) has a transverse groove that is adapted to the transverse limiting frame (74) inside. The bottom of the transverse limiting frame (74) and the top surface of the main frame (1) are jointly provided with a cylinder (75).

2. The fixed-point root crushing drill bit assembly based on straw return to the field according to claim 1, characterized in that, The positioning hook module (5) also includes a cylinder (56) located at the center of the front end of the first slide frame (3), and a movable pressure plate (57) is fixedly installed at the output shaft of the front end of the cylinder (56). Several sets of longitudinal inserts (58) are fixedly installed at equal intervals along the length direction of the bottom of the movable pressure plate (57), and the longitudinal inserts (58) are located at the upper end of the interval between two adjacent sets of hooks (55).

3. The fixed-point root crushing drill bit assembly based on straw return to the field according to claim 1, characterized in that, The bottom shaft of the dual-axis motor (71) extends to the bottom of the main frame (1) and is fixedly installed with a movable abutment cylinder (76). Movable shaft pins (77) are fixedly installed at the center of the front and rear outer walls of the movable abutment cylinder (76). The front and rear ends of the movable abutment cylinder (76) are respectively movably installed with a shift cylinder (78). Each shift cylinder (78) is fixedly installed with a T-shaped lifting rod (79). The top of the T-shaped lifting rod (79) extends to the upper end of the main frame (1). A pressure spring coil (710) is wound around the outside of the T-shaped lifting rod (79) between the shift cylinder (78) and the bottom surface of the main frame (1).

4. The fixed-point root crushing drill bit assembly based on straw return to the field according to claim 3, characterized in that, The outer wall of the transposition cylinder (78) is provided with corrugated grooves in an annular pattern. The two sets of movable shaft pins (77) are slidably connected in the corresponding corrugated grooves. The bottom of the transposition cylinder (78) is fixedly installed with a second cutter (711) along the length direction of the main frame (1), and the bottom surface of the second cutter (711) is conical.

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