A residual film pickup machine with secondary demolding and impurity removal function

Abstract

The application discloses a residual film picking machine with secondary demolding and impurity removing functions, and relates to the technical field of agricultural machinery. The transmission frame is connected with the pole beating frame in the middle of the outer wall, and the pole beating frame is connected with the film uncovering frame in the middle. The top end of the film uncovering frame is rotatably connected with a chain wheel on one side and fixedly connected with a base plate on the other side. The transmission roller is coaxially fixedly connected with the center of the chain wheel. The adjusting roller is rotatably connected with the middle of the base. The bottom end of the extension plate is rotatably connected with the driven roller. The residual film on the ground is picked up and impurities are removed by the first impurity removing conveyor belt. The residual film is continuously guided to the second impurity removing conveyor belt after the impurities are removed. The residual film is further removed by the second impurity removing conveyor belt. The double impurity removing mode effectively reduces the amount of impurities carried in the residual film.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a residual film pickup machine with a secondary film removal and impurity removal function. Background Technology

[0002] The residual film collection machine belongs to agricultural machinery for farmland cleaning and management. It consists of a suspended frame, a film-lifting and soil-loosening device, a collection and conveying device, a film-soil-and-debris separation device, a film-collecting and unloading device, and a transmission mechanism. It can be used before sowing or after harvesting to dig out, hook up, and screen out broken, buried, and scattered waste film within 0-15cm of soil to remove soil, straw, and other debris. Finally, the clean residual film is collected and packaged, realizing the mechanized cleaning and recycling of residual film in farmland and solving problems such as soil compaction, decreased soil fertility, and difficulty in crop emergence caused by long-term film residue.

[0003] In existing residual film pickup machines, the residual film is hooked up by the spikes and then conveyed to the rear packaging area by a primary impurity removal conveyor belt for winding. This process only involves one impurity removal operation, which is insufficient to fully remove impurities from the residual film. Furthermore, during the process of being hooked up and conveyed by the spikes and the primary impurity removal conveyor belt, the residual film itself is prone to curling, wrinkling, and shrinking, resulting in impurities such as stones, soil clods, and straw fragments being tightly wrapped inside the residual film. This leads to poor separation between the residual film and impurities, resulting in a large amount of impurities in the recycled residual film. In addition, the spacing of the primary impurity removal conveyor belt is uniform and fixed, and the space for stones to fall and be discharged is narrow. Falling stones are prone to getting stuck inside the primary impurity removal conveyor belt, and long-term accumulation can cause jamming and blockage of the conveying mechanism. Summary of the Invention

[0004] The purpose of this invention is to provide a residual film pickup machine with a secondary film removal and impurity removal function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a residual film picking machine with a secondary film removal and impurity removal function, comprising a transmission frame, a rod-beating frame and a film-removing frame, wherein the rod-beating frame is connected to the middle of the outer wall of the transmission frame, and the film-removing frame is connected to the middle of the rod-beating frame, and the film-removing frame is provided with a primary impurity removal mechanism and a secondary impurity removal mechanism.

[0006] The primary impurity removal mechanism includes a sprocket rotatably connected to one side of the top of the film-unwrapping frame. An extension plate is fixedly connected to the bottom of the film-unwrapping frame away from the traveling wheel by screws. A drive roller is coaxially fixedly connected to the center of the sprocket, and a driven roller is rotatably connected to the bottom of the extension plate. The outer wall of the drive roller has several equally spaced positioning grooves, and the outer wall of the driven roller has several equally spaced limiting grooves. A primary impurity removal conveyor belt is tractively connected to both the positioning grooves and the limiting grooves. The size of the positioning groove increases sequentially from the center of the drive roller to both sides, so that the primary impurity removal conveyor belts at the corresponding positions of the drive rollers are distributed outward in a figure-eight shape for laterally spreading the residual film. The size of the limiting groove decreases sequentially from the center of the driven roller to both sides, which, together with the primary impurity removal conveyor belts, enables the residual film to converge and gather. At the same time, the spacing between the primary impurity removal conveyor belts increases synchronously, expanding the space for the stones to fall and be discharged.

[0007] The secondary impurity removal mechanism includes a secondary impurity removal conveyor belt disposed on one side of the primary impurity removal conveyor belt, and a clover roller that drives the secondary impurity removal conveyor belt to rotate. The secondary impurity removal conveyor belt is responsible for conveying the residual film after primary impurity removal and performing secondary impurity removal.

[0008] A baffle is provided between the primary impurity removal mechanism and the secondary impurity removal mechanism to prevent the residual film after the primary impurity removal from falling to the ground and to guide the residual film back to the secondary impurity removal mechanism for conveying and impurity removal.

[0009] The outer walls of the primary and secondary impurity removal conveyor belts are provided with a number of spike teeth, which are inclined at 5° to both sides and distributed in a figure-eight shape to further improve the residual film unfolding effect.

[0010] Preferably, both the positioning groove and the limiting groove are annular grooves; a spiral auger is rotatably connected inside the waste discharge cage, and an array of screen holes are opened on the outer wall of the waste discharge cage; the transmission frame is used for docking and transmission with the three-point suspension system of the tractor; a transmission chain is driven to the outer wall of the sprocket; and the bottom blade of the sling cutter has a "V" shaped structure.

[0011] The high-speed rotating blades on the front-end threshing frame strike the straw stubble in the field with their "human" shaped blades, crushing the straw. The crushed straw is then separated from the soil and small impurities by passing through the sieve holes on the outer wall of the discharge cage as the discharge cage rotates. The remaining straw is then discharged from the machine through the discharge cage.

[0012] Preferably, the primary impurity removal conveyor belt in the area corresponding to the drive roller is distributed with a central convex shape and outward expansion; the primary impurity removal conveyor belt in the area corresponding to the driven roller is distributed with a central concave shape and inward expansion; the outer wall of the adjusting roller is provided with guide grooves that correspond to and cooperate with the positioning groove and the limiting groove respectively.

[0013] The spacing of the primary impurity removal conveyor belt increases synchronously with the changes in the positioning groove and size, further expanding the space for the stones to fall and be discharged, and improving the efficiency of impurity separation.

[0014] Preferably, the outer wall of the base has fixing holes on both sides corresponding to the positioning pin. The bottom of the fixing holes is flared. The top of the positioning pin is fixedly connected to a limiting ring. The middle of the limiting ring is connected to a threaded pin. The positioning pin, the limiting ring and the threaded pin are combined to form a cross shape.

[0015] The moving base moves the nail teeth closer to the positioning pin. Then, the fixing holes on both sides of the base are aligned with the positioning pin and inserted. At this time, the two sides of the base deform until the top surface of the base contacts the bottom of the limiting ring, and then the base is locked, quickly completing the assembly of the nail teeth.

[0016] Preferably, the base has an arc-shaped structure, with the nail teeth at the center arranged vertically and the nail teeth on both sides inclined outwards away from the center nail teeth; the top of each nail tooth has a beveled surface on both sides to facilitate the nail teeth to be inserted into the soil smoothly.

[0017] The tractor then pulls the machine forward at a constant speed, with the wheels rolling along the ground. The depth of the machine is adjusted so that the nail teeth are inserted into the top soil to a depth of 0-15cm. At this point, the inclined section allows the nail teeth to be inserted smoothly.

[0018] Preferably, a plum blossom roller is rotatably connected to the top of the substrate, and a rotating seat is installed on the side of the film peeling frame near the plum blossom roller. A hydraulic cylinder is rotatably connected inside the rotating seat, and a cover plate is rotatably connected to the output end of the hydraulic cylinder.

[0019] After being stretched and impurities removed, the residual film continues to be conveyed by the primary impurity removal conveyor belt, passes through the adjusting roller to the plum blossom roller, and is then guided by the plum blossom roller to fall into the film collection box formed by the film collection seat and the cover plate for storage.

[0020] Preferably, the top of the cover plate is hinged and rotatably connected to the film-removing machine frame, and the bottom of the cover plate is fitted with a film collection seat; the middle of the outer wall of the film collection seat is fixedly connected to the film-removing machine frame; the film collection seat and the cover plate together form a film collection box for storing the recycled residual film.

[0021] The film collection seat and the cover plate form a closed film collection box, which can effectively store the recycled residual film and prevent the residual film from flying and scattering during the collection process; the hydraulic cylinder drives the cover plate to rotate and open, realizing the automatic unloading and discharge of the residual film.

[0022] Preferably, a collection box is provided above the extension plate, and a conveying auger is connected inside the collection box. Both the conveying auger and the outer walls of the collection box are connected to the film-removing machine frame. The two work together to collect and laterally convey the separated debris.

[0023] The fallen stones and soil fall into the collection box above the extension plate, and are then transported horizontally to the outside of the machine by the conveying auger inside the collection box.

[0024] Preferably, a secondary impurity removal conveyor belt is provided on one side of the primary impurity removal conveyor belt. The secondary impurity removal conveyor belt is driven by the rotation of the plum blossom roller. A baffle is fixedly connected to the side of the film peeling frame near the secondary impurity removal conveyor belt, and a fan is installed on the side of the film peeling frame near the rod-beating frame.

[0025] As can be seen from the above, the residual film picking machine with secondary delamination and impurity removal function provided by the present invention has the following beneficial effects.

[0026] 1. The positioning grooves on the drive rollers, whose size increases from the center to both sides, cause the primary impurity removal conveyor belt to expand outward in a figure-eight shape. Combined with the spike teeth that are inclined at 5° to both sides, the residual film is spread out laterally in a double manner, which can eliminate the curling and wrinkling of the residual film and make it easier to remove impurities such as stones and mud wrapped inside the residual film. At the same time, the primary impurity removal conveyor belt has a certain spacing not only in the horizontal direction, but also in the vertical direction, which expands the space for stones to fall and be discharged. Combined with the collection box and conveying auger above the extension plate, the separated impurities can be quickly collected and discharged, improving the purity of the residual film recovery and preventing the residual film from being wrapped with too many impurities.

[0027] 2. The residual film on the ground is picked up and impurities are removed by the primary impurity removal conveyor belt. After impurity removal, it is guided to the secondary impurity removal conveyor belt for further impurity removal. The dual impurity removal mode effectively reduces the amount of impurities carried in the residual film. In addition, the baffle can effectively prevent the residual film after the primary impurity removal from falling to the ground and guide the residual film back to the secondary impurity removal mechanism for conveying and impurity removal.

[0028] 3. The limiting grooves on the driven roller, whose size decreases from the center to both sides, make the primary impurity removal conveyor belt concave inward, which can realize the convergence and gathering of residual film; the inclined surface of the top of the nail tooth reduces the resistance to soil entry, making it easier for the nail tooth to smoothly enter the soil and hook the film, while the "human" shaped blade can effectively crush the straw, avoid straw entanglement with the blade, ensure continuous and stable operation of the whole machine, and greatly improve the work efficiency. Attached Figure Description

[0029] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the second-view three-dimensional structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the overall main structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the overall side view structure of the present invention;

[0033] Figure 5 This is a front-view three-dimensional structural diagram of the drive roller, adjusting roller, and driven roller of the present invention (the arrow points to the low-position distribution direction of the primary impurity removal conveyor belt);

[0034] Figure 6 This is a rear-view three-dimensional structural diagram of the drive roller, adjusting roller, and driven roller of the present invention (the arrow points to the low-position distribution direction of the primary impurity removal conveyor belt);

[0035] Figure 7 This is a three-dimensional structural diagram of the conveyor belt near the drive roller area in the primary impurity removal process of the present invention.

[0036] Figure 8 This is a three-dimensional structural diagram of the conveyor belt near the driven roller region in the primary impurity removal process of the present invention.

[0037] Figure 9 This is a schematic diagram of the three-dimensional structure of the base and the nail teeth of the present invention;

[0038] Figure 10 This is a schematic diagram of the three-dimensional structure of the nail teeth and beveled surface of the present invention;

[0039] Figure 11 This is a schematic diagram of the front sectional view of the base of the present invention;

[0040] Figure 12 This is a schematic diagram of the main structure of the transmission roller and positioning groove of the present invention;

[0041] Figure 13 This is a schematic diagram of the cross-sectional structure of the plum blossom roller of the present invention;

[0042] Figure 14 This is a schematic diagram of the main structure of the driven roller, the limiting groove, and the spike teeth of the present invention;

[0043] Figure 15 For the present invention Figure 13 Enlarged structural diagram at point B (arrows indicate the trajectory of residual film movement).

[0044] In the diagram: 1. Transmission frame; 2. Batching frame; 3. Film peeling frame; 4. Traveling wheel; 5. Throwing knife; 6. Impurity removal cage; 7. Sprocket; 8. Base plate; 9. Base; 10. Extension plate; 11. Transmission roller; 12. Adjusting roller; 13. Driven roller; 14. Positioning groove; 15. Limiting groove; 16. Primary impurity removal conveyor belt; 17. Positioning pin; 18. Limiting ring; 19. Threaded pin; 20. Base; 21. Nail tooth; 22. Conveying auger; 23. Film collecting seat; 24. Hydraulic cylinder; 25. Cover plate; 26. Plum blossom roller; 27. Inclined section; 28. Secondary impurity removal conveyor belt; 29. ​​Baffle; 30. Fan. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0046] Please see Figures 1-15 This invention provides a technical solution: a residual film pickup machine with secondary film removal and impurity removal function, comprising a transmission frame 1, a striking frame 2, and a film peeling frame 3. The striking frame 2 is connected to the middle of the outer wall of the transmission frame 1, and the film peeling frame 3 is connected to the middle of the striking frame 2. A traveling wheel 4 is rotatably mounted on one side of the bottom of the film peeling frame 3. Several equally spaced sling cutters 5 are rotatably connected to the input end of one side of the bottom of the striking frame 2, and a waste removal cage 6 is installed on the other side of the bottom of the striking frame 2. A sprocket 7 is rotatably connected to one side of the top of the film peeling frame 3, and a base plate 8 is fixedly connected to the other side. A base 9 is fixedly connected to the middle of the top of the film peeling frame 3. The bottom of the film peeling frame 3 is away from the traveling wheel 4. An extension plate 10 is fixedly connected to the side by screws. A drive roller 11 is fixedly connected to the center of the sprocket 7. An adjusting roller 12 is rotatably connected to the middle of the base 9. A driven roller 13 is rotatably connected to the bottom of the extension plate 10. The outer wall of the drive roller 11 has several equally spaced positioning grooves 14. The outer wall of the driven roller 13 has several equally spaced limiting grooves 15. The positioning grooves 14 and the limiting grooves 15 are both connected to a primary impurity removal conveyor belt 16. Several positioning pins 17 are fixedly connected to the outer walls of the primary impurity removal conveyor belt 16 and the secondary impurity removal conveyor belt 28. A base 20 is detachably connected to the middle of the positioning pin 17. A nail tooth 21 is fixedly connected to the middle of the top of the base 20.

[0047] The dimensions of the positioning groove 14 increase sequentially from the center of the drive roller 11 to both sides, causing the primary impurity removal conveyor belt 16 at the corresponding position of the drive roller 11 to expand outward in a figure-eight shape, which is used to spread the residual film laterally; the dimensions of the limiting groove 15 decrease sequentially from the center of the driven roller 13 to both sides, which, together with the primary impurity removal conveyor belt 16, enables the residual film to converge and gather; at the same time, the spacing between the primary impurity removal conveyor belts 16 increases synchronously, expanding the space for the stones to fall and be discharged; the nail teeth 21 are inclined at 5° to both sides, and are distributed in a figure-eight shape, further improving the residual film spreading effect.

[0048] Both the positioning groove 14 and the limiting groove 15 are annular grooves; the internal spiral auger is rotatably connected to the impurity discharge cage 6, and the outer wall of the impurity discharge cage 6 has an array of screen holes; the transmission frame 1 is used to connect and drive with the three-point suspension system of the tractor; the outer wall of the sprocket 7 is connected to a transmission chain; the bottom blade of the sling cutter 5 has a "V" shaped structure; the primary impurity removal conveyor belt 16 in the area corresponding to the transmission roller 11 is generally distributed with a central convex shape and outward expansion; the primary impurity removal conveyor belt 16 in the area corresponding to the driven roller 13 is generally distributed with a central concave shape and inward expansion; the outer wall of the adjusting roller 12 has guide grooves that respectively cooperate with the positioning groove 14 and the limiting groove 15;

[0049] The base 20 has fixing holes on both sides of its outer wall corresponding to the positioning pin 17. The bottom of the fixing holes is flared. The top of the positioning pin 17 is fixedly connected to a limiting ring 18. The middle of the limiting ring 18 is connected to a threaded pin 19. The positioning pin 17, the limiting ring 18 and the threaded pin 19 are combined to form a "+" shape. The base 20 has an arc-shaped structure. The nail tooth 21 located in the center is arranged vertically. The nail teeth 21 located on both sides are inclined to the outside of the nail tooth 21 away from the center nail tooth 21. The top of the nail tooth 21 has a beveled part 27 on both sides to facilitate the nail tooth 21 to be smoothly inserted into the soil.

[0050] A plum blossom roller 26 is rotatably connected to the top of the substrate 8, and a rotating seat is installed on the side of the film peeling frame 3 near the plum blossom roller 26. A hydraulic cylinder 24 is rotatably connected inside the rotating seat, and a cover plate 25 is rotatably connected to the output end of the hydraulic cylinder 24. The top of the cover plate 25 is hinged and rotatably connected to the film peeling frame 3, and a film collecting seat 23 is fitted to the bottom of the cover plate 25. The middle part of the outer wall of the film collecting seat 23 is fixedly connected to the film peeling frame 3. The film collecting seat 23 and the cover plate 25 together form a film collecting box for storing and recycling film. Residual film; A collection box is provided above the extension plate 10, and a conveying auger 22 is connected inside the collection box. The conveying auger 22 and both sides of the outer wall of the collection box are connected to the film peeling frame 3. The two work together to collect and laterally convey the separated debris. The secondary impurity removal conveyor belt 28 is driven by the rotation of the plum blossom roller 26. A baffle 29 is fixedly connected to the side of the film peeling frame 3 near the secondary impurity removal conveyor belt 28, and a fan 30 is installed on the side of the film peeling frame 3 near the rod-beating frame 2.

[0051] For specific implementation, please refer to Figure 1 and Figure 4 When this residual film picking machine with secondary film removal and impurity removal function is in operation, it first connects to the three-point suspension system of the tractor through the transmission frame 1. The tractor's power drives the rod frame 2 and the film peeling frame 3 to move. Then, the power mechanism is started, which makes the plum blossom roller 26 inside the substrate 8 rotate. The transmission chain drives the sprocket 7 and the coaxially fixed transmission roller 11 to rotate, thereby driving the primary impurity removal conveyor belt 16 to circulate along the transmission roller 11, the adjusting roller 12 and the driven roller 13. At the same time, the power is synchronously transmitted to the throwing knife 5, the impurity removal cage 6 and the conveying auger 22, so that each mechanism operates synchronously.

[0052] See Figure 2 and Figure 3 Then the tractor pulls the whole machine forward at a constant speed, with the walking wheels 4 rolling in contact with the ground. The depth of the whole machine into the soil is adjusted so that the nail teeth 21 are inserted into the top soil to a depth of 0-15cm. At this time, the nail teeth 21 are smoothly inserted through the inclined surface 27. The sling blade 5 on the front-end threshing frame 2 rotates at high speed, and its "human" shaped blade strikes the straw stubble in the field downwards, crushing the straw. The crushed straw part moves with the waste discharge cage 6, and the soil and small debris are initially separated through the sieve holes on the outer wall of the waste discharge cage 6. The remaining straw is discharged out of the machine by the waste discharge cage 6.

[0053] See Figure 5 , Figure 6 and Figure 9 As the machine moves forward, the spikes 21 near the extension plate 10 insert into the soil, hooking up the residual film on the surface and in the shallow buried soil. Since the spikes 21 are arranged in a figure-eight shape, they can initially spread the residual film laterally while hooking it up. Furthermore, the size of the limiting grooves 15 on the driven roller 13 decreases sequentially from the center to both sides, which helps to gather the residual film and prevents it from being missed due to being too close to the sides of the machine. After being hooked by the spikes 21, the residual film is conveyed upwards by the primary impurity removal conveyor belt 16. When it reaches the area of ​​the drive roller 11, the size of the positioning grooves 14 on the drive roller 11 increases sequentially from the center to both sides, causing the primary impurity removal conveyor belt 16 to expand outwards in a figure-eight shape with a certain angle of inclination (e.g., ...). Figure 5 As shown), ensure that the residual film is transported to this area (this area can be referred to) Figure 5 In area A), the film will be subjected to a downward gravitational force, resulting in a certain degree of lateral spreading (equivalent to the nail teeth 21 hooking onto the residual film, causing the curled and wrinkled residual film to spread downwards along the inclined surface of the primary impurity removal conveyor belt 16). This is combined with the inclined nail teeth 21 (such as...). Figure 9 As shown in the figure, the vibration force of the equipment can effectively improve the stretching effect of the residual film wrinkles, and the stones, mud and other impurities wrapped inside the residual film will lose their wrapping and binding and slide down under the downward gravity component; at the same time, the fan 30 can blow the airflow towards the primary impurity removal conveyor belt 16, so that the residual film adheres more closely to the primary impurity removal conveyor belt 16, preventing the residual film from falling off, while the airflow can blow away some of the impurities carried by the residual film.

[0054] See Figure 7 , Figure 8 and Figure 12 The fallen stones and soil fall into the collection box above the extension plate 10, and are then transported laterally to the outside of the machine by the conveying auger 22 inside the collection box; and the spacing of the primary impurity removal conveyor belt 16 increases synchronously with the change in size of the positioning groove 14, further expanding the space for the stones to fall and be discharged, and improving the efficiency of impurity separation.

[0055] After being stretched and impurities removed, the residual film continues to be conveyed by the primary impurity removal conveyor belt 16. The residual film will fall downwards into the gap between the baffle 29 and the secondary impurity removal conveyor belt 28 (the trajectory of the residual film falling is as follows). Figure 15 (As shown by the curved arrow in the middle), since the secondary impurity removal conveyor belt 28 is immediately connected to the conveying direction side of the primary impurity removal conveyor belt 16, the secondary impurity removal conveyor belt 28 is rotated by the drive of the plum blossom roller 26, thereby using the spike teeth 21 to pick up the residual film after the primary impurity removal and convey it upwards for a secondary transport (the residual film transport trajectory is as shown in the figure). Figure 15 (As shown by the straight arrow in the middle) During this period, the amount of impurities carried by the residual film is further reduced by the lifting action and the vibration force during the equipment conveying. In this process, the baffle 29 can prevent the residual film from falling to the ground, and the impurities in the residual film will slide to the ground through the baffle 29, preventing the impurities from affecting the normal operation of the equipment. The residual film falls into the film collection box formed by the film collection seat 23 and the cover plate 25 for storage. The position of the adjusting roller 12 can be adjusted by the base plate 8, thereby adjusting the tension of the primary impurity removal conveyor belt 16 and avoiding the primary impurity removal conveyor belt 16 from running off-track.

[0056] When the residual film in the film collection box reaches the preset amount, the tractor stops moving forward, controls the extension and retraction of the hydraulic cylinder 24, and drives the cover plate 25 to rotate around the hinge point with the film-removing frame 3 to open, so that the residual film in the film collection box is unloaded and discharged, completing the recycling of residual film; after unloading, controls the hydraulic cylinder 24 to reset, the cover plate 25 closes, and the whole machine continues to move forward to repeat the above process, so as to realize the continuous mechanized recycling of residual film in farmland.

[0057] See Figure 10 and Figure 11 When installing the nail tooth 21, first move the base 20 to bring the nail tooth 21 closer to the positioning pin 17. Then, align the fixing holes on both sides of the base 20 with the positioning pin 17 and insert it. At this time, the two sides of the base 20 will deform until the top surface of the base 20 contacts the bottom of the limiting ring 18, and then lock the base 20 to quickly complete the assembly of the nail tooth 21.

[0058] When disassembling the damaged nail tooth 21, simply pull the base 20 away from the positioning pin 17; and use the nut to move it down along the threaded pin 19 until it fits tightly against the limit ring 18, thereby reinforcing the base 20 and improving its stability.

[0059] This solution utilizes positioning grooves 14 on the drive roller 11, whose dimensions increase from the center to both sides, to make the primary impurity removal conveyor belt 16 expand outward in a figure-eight shape. Combined with the spike teeth 21 that are inclined at 5° to both sides, it achieves double lateral spreading of the residual film, which can effectively eliminate the curling and wrinkling of the residual film, making it easier to discharge impurities such as stones and mud wrapped inside the residual film. At the same time, the primary impurity removal conveyor belt 16 has a certain spacing not only in the horizontal direction but also in the vertical direction, which expands the space for stones to fall and be discharged. Combined with the collection box above the extension plate 10 and the conveying auger 22, it can quickly collect and discharge the separated impurities, improve the purity of the residual film recycling, and prevent the residual film from being wrapped with too many impurities.

[0060] The drive roller 11, adjusting roller 12, and driven roller 13 are arranged in a triangle. The guide groove on the outer wall of the adjusting roller 12 corresponds to and cooperates with the positioning groove 14 and the limiting groove 15, which can effectively guide and tension the primary impurity removal conveyor belt 16, and prevent the primary impurity removal conveyor belt 16 from running off-center or slipping. The limiting groove 15 on the driven roller 13 has a size that decreases from the center to both sides, so that the primary impurity removal conveyor belt 16 is distributed in a concave inward distribution, which can realize the convergence and gathering of residual film. The inclined surface 27 at the top of the nail tooth 21 reduces the resistance to soil entry, making it easier for the nail tooth 21 to smoothly enter the soil and hook the film. At the same time, the "human" shaped blade 5 can effectively crush the straw, prevent the straw from getting tangled in the blade 5, ensure the continuous and stable operation of the whole machine, and greatly improve the operation efficiency.

[0061] The positioning pin 17, the limiting ring 18 and the threaded pin 19 are combined to form a cross-shaped locking structure, which makes the base 20 detachably connected to the primary impurity removal conveyor belt 16, facilitating the disassembly, replacement and maintenance of the nail teeth 21; the flared fixing holes on both sides of the base 20 can realize the quick insertion and assembly of the positioning pin 17, improving assembly efficiency.

[0062] Specifically, such as Figure 5 and Figure 14 As shown, the driven roller 13 is smaller than the drive roller 11 and the adjusting roller 12, and the depth of the limiting groove 15 of the driven roller 13 is less than the length of the nail tooth 21, ensuring that the part of the nail tooth 21 protruding from the limiting groove 15 is 5-15cm. With the adjustment of the equipment suspension system, it can be ensured that the nail tooth 21 at the position of the driven roller 13 can be inserted into the soil to fully hook the film. It is worth noting that the film is usually laid on the ground, and its edges are fixed by compacting the soil. The nail tooth 21 usually only needs to be inserted into the soil for about 5cm to complete the film hooking operation. The length of the nail tooth 21 can be customized to meet the needs of different working conditions.

[0063] The film collection seat 23 and the cover plate 25 form a closed film collection box, which can effectively store the recycled residual film and prevent the residual film from flying and scattering during the collection process. The hydraulic cylinder 24 drives the cover plate 25 to rotate and open, realizing the automatic unloading and discharge of the residual film. There is no need for manual film unloading, which reduces the labor intensity of operators and improves the convenience of residual film recycling.

[0064] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A residual film pickup machine with secondary film removal and impurity removal function, comprising a transmission frame (1), a rod-beating frame (2), and a film-removing frame (3), wherein the rod-beating frame (2) is connected to the middle of the outer wall of the transmission frame (1), and the film-removing frame (3) is connected to the middle of the rod-beating frame (2), characterized in that: The film uncovering frame (3) is provided with a primary impurity removal mechanism and a secondary impurity removal mechanism; Said primary impurity removal mechanism comprises a sprocket (7) rotationally connected to one side of the top end of the film uncovering frame (3), wherein an extension plate (10) is fixedly connected to a side of the bottom end of the film uncovering frame (3) away from the walking wheel (4) by screws; a transmission roller (11) is coaxially and fixedly connected to the center of the sprocket (7), and a driven roller (13) is rotationally connected to the bottom end of the extension plate (10). A plurality of positioning grooves (14) distributed at equal intervals are formed on the outer wall of the transmission roller (11), and a plurality of limiting grooves (15) distributed at equal intervals are formed on the outer wall of the driven roller (13). A primary impurity removal conveyor belt (16) is drivingly connected inside both the positioning grooves (14) and the limiting grooves (15). The size of the positioning groove (14) increases sequentially from the center of the transmission roller (11) to both sides, so that the primary impurity removal conveyor belt (16) at the corresponding position of the transmission roller (11) is distributed in an outward-expanded splayed shape for horizontally spreading the residual film. The size of the limiting groove (15) decreases sequentially from the center of the driven roller (13) to both sides, and cooperates with the primary impurity removal conveyor belt (16) to realize the convergence and gathering of the residual film. At the same time, the spacing between the primary impurity removal conveyor belts (16) increases synchronously, which enlarges the space for stones to fall and discharge; Said secondary impurity removal mechanism comprises a secondary impurity removal conveyor belt (28) arranged on one side of the primary impurity removal conveyor belt (16), and a plum blossom roller (26) driving the secondary impurity removal conveyor belt (28) to rotate, wherein the secondary impurity removal conveyor belt (28) is responsible for conveying the residual film after primary impurity removal and performing secondary impurity removal; A baffle (29) is arranged between the primary impurity removal mechanism and the secondary impurity removal mechanism, which is used for preventing the residual film after primary impurity removal from falling to the ground, and redirecting the residual film to the secondary impurity removal mechanism for conveying and impurity removal; A plurality of nail teeth (21) are arranged on the outer walls of the primary impurity removal conveyor belt (16) and the secondary impurity removal conveyor belt (28), said nail teeth (21) are inclined 5° to both sides, and the whole is distributed in a splayed shape, which further improves the spreading effect of the residual film.

2. The residual film pickup machine with secondary film removal and impurity removal function according to claim 1, characterized in that: A plurality of positioning pins (17) are arranged on the outer walls of the primary impurity removal conveyor belt (16) and the secondary impurity removal conveyor belt (28), a base (20) is detachably connected to the middle part of the positioning pin (17), and the middle part of the top end of the base (20) is fixedly connected with the nail teeth (21).

3. A residual film pickup machine with secondary film removal and impurity removal function according to claim 2, characterized in that: A walking wheel (4) is rotatably installed on one side of the bottom end of the film uncovering frame (3), a fan (30) is installed on a side of the film uncovering frame (3) close to the stalk breaking frame (2). A plurality of equally spaced flail knives (5) are rotatably connected to the input end on one side of the bottom of the stalk breaking frame (2), and an impurity discharging cage (6) is installed on the other side of the bottom of the stalk breaking frame (2). A base plate (8) is fixedly connected to the other side of the top end of the film uncovering frame (3).

4. A residual film pickup machine with secondary film removal and impurity removal function according to claim 3, characterized in that: Said positioning grooves (14) and the limiting grooves (15) are both annular grooves; a screw auger is rotatably connected inside the impurity discharging cage (6), and array-distributed screen holes are formed on the outer wall of the impurity discharging cage (6); the transmission frame (1) is used for connecting and transmitting with the three-point hitch system of a tractor; a transmission chain is drivingly connected to the outer wall of the sprocket (7); the bottom edge body of the flail knife (5) is in a herringbone structure.

5. A residual film pickup machine with secondary film removal and impurity removal function according to claim 4, characterized in that: The primary impurity removal conveyor belt (16) in the area corresponding to the drive roller (11) is distributed with a central convex shape and outward expansion; the primary impurity removal conveyor belt (16) in the area corresponding to the driven roller (13) is distributed with a central concave shape and inward expansion; a base (9) is fixedly connected to the top center of the film peeling frame (3), and an adjusting roller (12) is rotatably connected to the center of the base (9). The outer wall of the adjusting roller (12) is provided with guide grooves that correspond to and cooperate with the positioning groove (14) and the limiting groove (15).

6. A residual film pickup machine with secondary film removal and impurity removal function according to claim 5, characterized in that: The base (20) has fixing holes on both sides of its outer wall corresponding to the positioning pin (17). The bottom of the fixing hole is flared. The top of the positioning pin (17) is fixedly connected to a limiting ring (18). The middle of the limiting ring (18) is connected to a threaded pin (19). The positioning pin (17), the limiting ring (18) and the threaded pin (19) are combined to form a "+" shape.

7. A residual film pickup machine with secondary film removal and impurity removal function according to claim 6, characterized in that: The base (20) has an arc-shaped structure. The nail teeth (21) located in the center are arranged vertically, and the nail teeth (21) on both sides are inclined to the outside of the central nail teeth (21). The top of the nail teeth (21) is provided with inclined surfaces (27) on both sides to facilitate the nail teeth (21) to be inserted into the soil smoothly.

8. A residual film pickup machine with secondary film removal and impurity removal function according to claim 7, characterized in that: The plum blossom roller (26) is rotatably connected to the top of the substrate (8). The secondary impurity removal conveyor belt (28) is driven by the rotation of the plum blossom roller (26). A rotating seat is installed on the side of the film peeling frame (3) near the plum blossom roller (26). A hydraulic cylinder (24) is rotatably connected inside the rotating seat. A cover plate (25) is rotatably connected to the output end of the hydraulic cylinder (24).

9. A residual film pickup machine with secondary film removal and impurity removal function according to claim 8, characterized in that: The top of the cover plate (25) is hinged and rotatably connected to the film peeling machine frame (3), and the bottom of the cover plate (25) is fitted with a film collection seat (23); the middle of the outer wall of the film collection seat (23) is fixedly connected to the film peeling machine frame (3); the film collection seat (23) and the cover plate (25) enclose a film collection box for storing the recycled residual film.

10. A residual film pickup machine with secondary film removal and impurity removal function according to claim 9, characterized in that: A collection box is provided above the extension plate (10), and a conveying auger (22) is connected inside the collection box. The conveying auger (22) and both sides of the outer wall of the collection box are connected to the film peeling frame (3). The two work together to collect and convey the separated debris laterally.

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