Straw smashing and residual film recycling and packing combined operation machine through film collecting by similar synchronous belt

Abstract

The present application belongs to the technical field of agricultural machinery, and discloses a straw smashing and residual film recycling and packaging combined operation machine through film collection by a similar synchronous belt, which comprises a rack, ground wheels, film lifting wheels and a film collection assembly arranged on the rack. The ground wheels are used for supporting and walking of the rack. The ground wheels are coaxially connected with transmission arms. The other ends of the transmission arms are coaxially connected with the film lifting wheels, which are used for transmitting power between the ground wheels and the film lifting wheels. According to the present application, the ground wheels and the film lifting wheels are coaxially connected through the transmission arms. The ground wheels are used as the power source for walking of the rack. When the ground wheels rotate, the film lifting wheels are driven to rotate synchronously through the transmission arms. The rotating speed of the film lifting wheels is consistent with the walking speed of the ground wheels. The phenomenon that the residual film cannot be collected in time due to slow rotating speed of the film lifting wheels caused by fast walking of the machine, or the phenomenon that the film is excessively torn and broken due to fast rotating speed caused by slow walking is avoided. The present application solves the problem that the speed of the film lifting wheels is inconsistent with the speed of the carrier in the existing residual film recycling device.

Description

Technical Field

[0001] This solution belongs to the field of agricultural machinery technology, specifically involving a combined operation machine for straw crushing, residual film recycling and baling using a synchronous belt-like film collection mechanism. Background Technology

[0002] Referring to the existing public (announcement) document CN113427670A, plastic film mulching technology has been widely promoted and applied in Xinjiang due to its advantages such as high yield, increased soil temperature, and moisture retention. However, the residual film after use has not been effectively recycled year after year, causing serious residual film pollution in farmland. In order to solve the serious white pollution problem caused by the increased use of plastic film, more and more people have begun to develop and research residual film recycling machinery to solve the problems of low efficiency, high labor intensity, and high cost of manual recycling.

[0003] For example, a document with publication number CN109819763A discloses a residual film recycling device and its operating method, including a carrier, a stalk pulling mechanism, and a residual film recycling mechanism; the stalk pulling mechanism includes a stalk pulling wheel, a main stalk pulling wheel, an auxiliary stalk pulling wheel, a cotton stalk conveying wheel group, a first stalk cutting rotor, a second stalk cutting rotor, and a cotton stalk collecting and throwing device; the residual film recycling mechanism includes a film lifting wheel, a retaining plate, a film picking wheel, a film brushing conveying wheel, and a film collecting box; the direction of rotation of the film lifting wheel is the same as the direction of rotation of the carrier drive wheel, and the direction of rotation of the film picking wheel is the same as the direction of rotation of the film lifting wheel.

[0004] The film-lifting wheel in the aforementioned residual film recycling machine is powered by a power source provided by the carrier, which in turn drives the residual film recycling mechanism. However, because the film-lifting wheel's power relies on a separate power source provided by the carrier, its speed is inconsistent with the carrier's travel speed. When the carrier's travel speed changes due to factors such as terrain and soil resistance, the film-lifting wheel's rotation speed passively changes synchronously, making it difficult to precisely match the two speeds. If the machine travels fast while the film-lifting and unloading mechanism rotates slowly, the speed at which the film is hooked by the film-lifting wheel cannot keep up with the travel speed, resulting in the film not having enough time to completely separate from the soil and be drawn into the collection mechanism, leaving film residue. Conversely, if the machine travels slowly while the film-lifting and unloading mechanism rotates fast, the film-lifting wheel will exert excessive pulling force on the film due to its high rotation speed, causing the film to be excessively torn into pieces, increasing the difficulty of subsequent collection. Summary of the Invention

[0005] The purpose of this solution is to provide a combined operation machine for straw crushing, residual film recycling, and baling using a synchronous belt-like film collection mechanism, in order to solve the problem of inconsistent speed between the film-lifting wheel and the carrier speed in existing residual film recycling devices.

[0006] To achieve the above objectives, this solution provides a combined operation machine for straw crushing, residual film recycling, and baling using a synchronous belt-like film collection mechanism. The machine includes a frame and ground wheels, a film-lifting wheel, and a film-collecting assembly mounted on the frame. The ground wheels are used for frame support and movement. A transmission arm is coaxially connected to the ground wheels, and the other end of the transmission arm is coaxially connected to the film-lifting wheel to transmit power between the ground wheels and the film-lifting wheel.

[0007] The principle and effect of this solution are as follows: by connecting the ground wheel and the film-lifting wheel coaxially through the transmission arm, the ground wheel is used as the power source for the frame to move. When it rotates, it drives the film-lifting wheel to rotate synchronously through the transmission arm, so that the speed of the film-lifting wheel is consistent with the speed of the ground wheel. This avoids the phenomenon that the film cannot be collected in time due to the machine moving fast and the film-lifting and film-removing mechanism rotating slowly, or the film is excessively torn and broken due to the slow movement and fast rotation. This allows the film-lifting wheel to match the speed of movement during operation.

[0008] Furthermore, the film taking assembly is a first film taking assembly, which includes a film taking roller and a film taking belt. The number of film taking rollers is three, and the three film taking rollers are arranged in a "triangular" structure. The three film taking rollers are connected by a film taking belt, and one of the film taking rollers is connected to the film lifting wheel by a belt. The outer side of the film taking belt is provided with rakes for collecting residual film.

[0009] The principle and effect of this solution are as follows: the film-lifting wheel is connected to a film-collecting roller in the first film-collecting assembly via a belt. When the film-lifting wheel rotates synchronously with the frame, the power is transmitted to the film-collecting roller via the belt, thereby driving the three film-collecting rollers to operate in conjunction with the film-collecting belt. This causes the rakes on the outer side of the film-collecting belt to hook up and collect residual film as the film-collecting belt moves. Through the above settings, the linear speed of the film-collecting belt is matched with the rotational speed of the film-lifting wheel and the traveling speed of the frame, avoiding the problems of missed film collection or excessive breakage caused by speed mismatch in existing independently driven film-collecting mechanisms.

[0010] Furthermore, the contact surface between the film taking belt and the film taking roller is provided with a plurality of protrusions, and the contact surface between the film taking roller and the film taking belt is provided with a plurality of grooves, the protrusions and grooves being configured to cooperate; the film taking roller is provided with a plurality of annular baffles, the number of which is multiple, and all are spaced apart along the length direction of the film taking roller.

[0011] The principle and effect of this solution are as follows: Mutually cooperating protrusions and grooves are set on the contact surfaces of the take-up belt and the take-up roller, creating an interlocking structure between them during transmission. The protrusions, embedded in the grooves, not only facilitate frictional transmission but also prevent slippage of the take-up belt. Multiple annular baffles spaced along the length of the take-up roller laterally limit the take-up belt during winding, preventing it from shifting or moving along the roller axis.

[0012] Furthermore, the film collection assembly is a second film collection assembly, which includes a drive shaft, a transmission roller, and a transmission belt. The transmission roller passes through the drive shaft and is coaxially and fixedly connected to the drive shaft. Both ends of the drive shaft are rotatably connected to the frame. There are three transmission rollers, which form a "triangle" structure. One transmission roller is connected to the film lifting wheel via a belt, and the three transmission rollers are connected via a transmission belt. The transmission belt is provided with several support rods, and the support rods are provided with spring teeth for collecting residual film.

[0013] The principle and effect of this solution are as follows: the film-forming wheel transmits power to one of the drive rollers through a belt, and the drive belt drives the three drive rollers to move together, so that the support rod on the drive belt moves with the drive belt, and the spring teeth on the support rod hook the residual film and collect it during the movement.

[0014] Furthermore, the spring tooth is a spring structure, one end of the spring tooth is set on the support rod, the free end is used to pick up residual film, and a magnetic block is provided in the free end of the spring tooth; the inner side of the transmission belt is provided with magnetic strips that repel the magnetic block, and the number of the racks is several, all of which are spaced along the movement trajectory of the transmission belt.

[0015] The principle and effect of this solution are as follows: (1) Referring to the elastic tooth in the existing patent document CN110169221A, the elastic tooth is used to pick up the residual film on the ground and transport it upward. In Xinjiang, the temperature difference between day and night is large, and the surface of the residual film is prone to condensation to form dew, which makes the surface of the residual film wet. As a result, the wet residual film will adhere to a large amount of soil and debris such as broken pieces and roots. The existing elastic tooth only achieves the picking up of residual film through elastic deformation, but it cannot clean up dew and impurities during the transportation of residual film. It is necessary to clean and remove impurities from the residual film in the subsequent residual film packaging mechanism. (2) In this solution, the elastic tooth is set as a spring structure, and the free end is used to pick up the residual film on the ground during the movement with the transmission belt. When the spring tooth picks up the film, as it approaches the magnetic strip with the transmission belt, the repulsive force between the magnetic strip and the magnetic block forces the free end of the spring tooth in the spring structure to overcome the elastic force and deform (moving away from the magnetic strip), stretching the spring tooth in the elastic structure and generating a pre-tight force. When the spring tooth is driven away from the magnetic strip by the transmission belt, the magnetic repulsive force disappears, and the spring tooth returns to its original shape under the action of the spring force. During the transmission of the transmission belt, the spring tooth periodically interacts with the magnetic strip repulsive force and generates reciprocating vibration. The vibration is transmitted to the residual film it picks up through the spring tooth, causing the dew attached to the surface of the residual film to detach due to the vibration, and the adhering soil, straw stubble and other impurities to separate from the residual film due to the vibration, thus completing part of the impurity removal and cleaning of the residual film simultaneously during transportation. (3) Existing residual films are all cleaned of impurities after entering the packaging mechanism. If the residual film carries dew, soil, straw stubble and other impurities into the packaging mechanism, the wet soil will increase the frictional resistance between the residual film and the packaging components due to its stickiness, affecting the compression and molding of the residual film. This solution utilizes the periodic repulsive force between the spring teeth and the magnetic strip as the conveyor belt moves to shake off impurities in real time along the transport path. This allows the residual film to be cleaned before entering the packaging mechanism, and dew drops directly to the ground after being detached by vibration. Impurities such as soil and debris are separated on-site after being screened by vibration, reducing the amount of impurities entering the packaging process.

[0016] Furthermore, the magnetism of the magnetic strips is arranged in a periodic gradient along the movement trajectory of the transmission belt, with three adjacent magnetic strips forming a group, and the magnetic intensity of the middle magnetic strip in each group being less than that of the adjacent magnetic strips on both sides.

[0017] The principle and effect of this solution are as follows: the magnetic force of the magnetic strips changes periodically in a gradient along the movement trajectory of the transmission belt. When the spring teeth pass through each set of magnetic strips in sequence with the transmission belt, they are first subjected to a large repulsive force from the strong magnetic strips, causing the free end of the spring teeth to deform significantly and accumulate elastic potential energy. Then, when passing through the middle weak magnetic strips, the repulsive force decreases sharply, and the spring teeth rebound quickly and vibrate under the action of elastic potential energy. They are then subjected to the repulsive force of the next set of strong magnetic strips, making the periodic vibration of the spring teeth stronger and the cleaning effect better.

[0018] Furthermore, the side of the magnetic strip closest to the transmission belt is an inclined windward surface, which is a magnetic surface that repels the magnetic block; the magnetic strip is connected to a connecting rod, and the two ends of the connecting rod are rotatably connected to the frame respectively; a torsion spring for resetting the connecting rod is provided at the connection point between the connecting rod and the frame.

[0019] The principle and effect of this solution are as follows: (1) Referring to the existing patent document CN113508654A, the plastic film conveying device adopts an open structure, that is, the top is not sealed. Due to the lack of top cover, the open structure, the flat and open terrain of Xinjiang farmland, the frequent strong winds, and the strong winds make it easy for the residual film to be lifted up and transported upward by the spring teeth. Its own weight is relatively light and the contact with the spring teeth is not completely fixed. At this time, the strong wind can easily lift the residual film and remove it from the conveying device. Although theoretically this problem can be avoided by adding a top cover to the conveying device, the top cover will block the operator's real-time observation of the conveying process. When the residual film is wrapped around the spring teeth, the conveyor belt runs off course, or impurities are stuck, it is difficult to detect and deal with it in time. (2) In this scheme, when the wind blows towards the second film receiving assembly, the wind force acts on the windward side of the magnetic strip, causing the windward side to flip. The connecting rod rotates around the frame's rotating connection point and twists the torsion spring, causing the magnetic surface of the magnetic strip to move away from the spring tooth. At this time, the repulsive force between the magnetic strip and the magnetic block inside the spring tooth disappears, and the spring structure of the spring tooth resets under the action of elastic force, causing the spiral coils of the spring tooth to fit together and clamping and fixing the picked-up residual film in the gap between the spiral coils. When the wind force weakens or the wind direction changes, the reset of the torsion spring drives the connecting rod to rotate in the opposite direction, the magnetic strip returns to its original position, the magnetic surface and the magnetic block generate repulsive force again, and the spring tooth undergoes elastic deformation again due to the repulsive force and resumes its vibration state.

[0020] Furthermore, the spring tooth forms an expanded diameter section along the axial direction from the free end to the middle position, and the outer diameter of the expanded diameter section gradually increases from the free end.

[0021] The principle and effect of this scheme are as follows: the diameter increases sequentially from the free end to the middle position of the spring tooth, which makes it easier for the residual film to be clamped in the spiral gap at the middle position due to the increased contact area when there is wind. Furthermore, the spring tooth includes a curved section, which is a flexible curved section located behind the free end of the spring tooth, and the curved section is bent in its natural state.

[0022] The principle and effect of this solution are as follows: When the magnetic strip is flipped by the wind, causing the magnetic surface to move away from the magnetic block and the magnetic repulsion disappears, the bending section relies on its natural bending characteristics to drive the free end to bend back (towards the inside of the transmission belt), forming a hook-like structure. The hook-shaped free end hooks onto the residual film. When the wind weakens and the magnetic strip is reset under the action of the torsion spring, the magnetic surface and the magnetic block resume their repulsion. The repulsion repels the free end of the spring tooth, thereby overcoming the flexible resistance of the bending section and restoring it to its initial bending state. This prevents the free end from remaining hook-shaped and affecting the vibration cleaning of the residual film.

[0023] Furthermore, the magnetic force of the magnetic strip closest to the discharge end of the second film receiving assembly is greater than that of any other magnetic strip.

[0024] The principle and effect of this solution are as follows: after the residual film is transported to the discharge position, a magnetic strip with a strong magnetic force is set so that the spring teeth are in the position of being stretched to the limit, so as to prevent the residual film from being clamped or hooked, and to facilitate the discharge of the residual film into the packaging component. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the straw crushing, residual film recycling and baling combined operation machine of the present invention, which uses a synchronous belt to collect film; Figure 2 This is a schematic diagram of the structure of the first film receiving assembly of the present invention; Figure 3 This is a schematic diagram of the structure of the film-collecting tape of the present invention; Figure 4 This is a schematic diagram of the structure of the film taking-up roller of the present invention; Figure 5 This is a schematic diagram of the structure of the second film receiving assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the spring tooth of the present invention; Figure 7 This is a schematic diagram of the structure of the magnetic strip of the present invention; Figure 8 This is a schematic diagram of the internal structure of the free end of the spring tooth in this invention; Figure 9 This is a schematic diagram of the structure of the flexible bending segment of the present invention; Figure 10 This is a schematic diagram of the structure of the rake nail and magnetic strip of the present invention; Figure 11 This is a schematic diagram of the structure of the picking teeth and magnetic strip of the present invention.

[0026] The reference numerals in the accompanying drawings include: frame 1, ground wheel 2, film-lifting wheel 3, drive arm 4, first film-receiving assembly 5, film-receiving roller 51, groove 511, annular baffle 512, film-receiving belt 52, protrusion 521, belt 53, rake nail 54, film-picking tooth 55 Second film receiving assembly 6, drive shaft 61, transmission roller 62, transmission belt 63, support rod 64, spring tooth 65, diameter expansion section 651, bending section 652, magnetic block 66, magnetic strip 67, windward surface 671, connecting rod 68, packaging assembly 7. Detailed Implementation

[0027] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Example 1: Please see Figure 1 and Figure 2 This embodiment provides a combined operation machine for straw crushing, residual film recycling, and baling using a synchronous belt-like film collection mechanism. It includes a frame 1, ground wheels 2, film-lifting wheels 3, a first film-collecting assembly 5, and a baling assembly 7. A tractor is connected to the front end of the frame 1, serving as the drive source. The baling assembly 7 is located at the rear end of the first film-collecting assembly 5 and is existing technology; see the baling mechanism in existing patent document CN112027254A. The ground wheels 2 are connected to the frame 1 via bearings, supporting the frame 1. A transmission arm 4 is coaxially fixedly connected to the ground wheels 2. The other end of the transmission arm 4 is coaxially connected to the film-lifting wheel 3. The transmission arm 4 is existing technology and contains a chain. Gears are coaxially fixedly connected to both the ground wheels 2 and the film-lifting wheel 3. The gears mesh with the chain, causing the rotation of the ground wheels 2 to drive the film-lifting wheel 3 to rotate synchronously via the transmission arm 4, ensuring that the rotational speed of the film-lifting wheel 3 matches the travel speed of the ground wheels 2 and the tractor.

[0028] Please see Figures 2-4 The first film taking-up assembly 5 includes three film taking-up rollers 51 arranged in a triangle, one of which is connected to the shaft of the film lifting wheel 3 via a belt 53. A film taking-up belt 52 surrounds the three film taking rollers 51, with rakes 54 evenly distributed on its outer surface for hooking residual film. The contact surface between the film taking belt 52 and the film taking rollers 51 has protrusions 521, and corresponding grooves 511 are formed on the surface of the film taking rollers 51. The protrusions 521 and grooves 511 engage to form an anti-slip transmission structure. Multiple annular baffles 512 are axially spaced on the film taking rollers 51. The outer diameter of the annular baffles 512 is larger than the width of the film taking belt 52, preventing lateral displacement of the film taking belt 52 through the limiting effect of the annular baffles 512.

[0029] During operation, the tractor drives the frame 1 forward, and the ground wheel 2 rotates at the same speed as the frame 1. This rotation, via the drive arm 4, drives the film-lifting wheel 3 to rotate synchronously. The spikes on the film-lifting wheel 3 pick up the residual film from the soil and transport it to the baling assembly 7 for baling. Simultaneously, the film-lifting wheel 3 drives the film-receiving roller 51 to rotate via the belt 53, causing the film-receiving belt 52 to run at a speed matching the speed of the ground wheel 2. The rakes 54 on the film-receiving belt 52 hook up the residual film and transport it to the baling assembly 7 at the rear of the frame, completing the continuous operation of residual film collection and soil separation.

[0030] Example 2: Please see Figures 5-9 The difference between this embodiment and Embodiment 1 is that a second film-collecting assembly 6 replaces the first film-collecting assembly 5. The second film-collecting assembly 6 includes a drive shaft 61, transmission rollers 62, and a transmission belt 63. There are three drive shafts 61, and both ends of each drive shaft 61 are connected to the frame 1 via bearings. The transmission rollers 62 pass through the drive shafts 61 and are coaxially and fixedly connected to them. The three transmission rollers 62 are arranged in a triangular structure, and the transmission belt 63 wraps around the three transmission rollers 62. One of the transmission rollers 62 is connected to the film-lifting wheel 3 via a belt 53. Multiple support rods 64 are fixedly arranged at intervals on the outer side of the transmission belt 63, and these support rods 64 are arranged along the movement trajectory of the transmission belt 63.

[0031] A spring-loaded tooth 65 is mounted on the support rod 64. A magnetic block 66 is embedded in the free end of the tooth 65, which is used to pick up residual film. Multiple sets of magnetic strips 67 are arranged at intervals along the movement trajectory inside the transmission belt 63. The magnetism of the magnetic strips 67 repels the magnetism of the magnetic block 66. Each set of magnetic strips 67 consists of three strips, with the middle strip having a weaker magnetic force than the two side strips. The strip closest to the packaging assembly 7 has the strongest magnetic force, allowing the tooth 65 to fully extend before unloading, ensuring the residual film detaches smoothly and enters the packaging assembly 7. The magnetic strips 67 are hinged to the frame 1 via a connecting rod 68. A torsion spring (not shown) is located at the junction of the connecting rod 68 and the frame 1. The side of the magnetic strip 67 closest to the transmission belt 63 has an inclined windward surface 671, which is a magnetic surface that repels the magnetic block 66. An expanded diameter section 651 (e.g., from the free end of the tooth 65 to the middle) is provided. Figure 6 As shown), the outer diameter gradually increases to enhance the clamping force of the residual film. The spring tooth 65 has a flexible bending section 652, which is made of a flexible material such as silicone, so that it naturally forms a bent hook shape (as shown). Figure 9 (As shown).

[0032] During operation, when the spring tooth 65 picks up the plastic film, it approaches the magnetic strip 67 along with the transmission belt 63. The repulsive force between the magnetic surface of the magnetic strip 67 and the magnetic block 66 forces the free end of the spring tooth 65, which is a spring structure, to overcome the elastic force and deform, moving away from the magnetic strip 67. This stretches the elastic spring tooth 65 and generates a preload. When the spring tooth 65 is driven away from the magnetic strip 67 by the transmission belt 63, the magnetic repulsive force disappears, and the spring tooth 65 returns to its original shape under the action of the spring force. During the transmission process of the transmission belt 63, the spring tooth 65 periodically interacts with the magnetic strip 67 and generates reciprocating vibration. The vibration is transmitted through the spring tooth 65 to the residual film it picks up, causing the dew attached to the surface of the residual film to detach due to the vibration, and the adhering soil, straw stubble, and other impurities to separate from the residual film due to the vibration. Thus, the residual film is partially cleaned during transportation. During operation, if strong winds occur and act on the second film receiving assembly 6, when the wind force acts on the windward surface 671, the magnetic strip 67 rotates around the connecting rod 68 away from the transmission belt 63. At this time, the spring teeth 65 contract and clamp the residual film under their own elastic force. Simultaneously, the bent section 652 hooks back to form a hook-like structure to fix the residual film. After the wind force weakens, the torsion spring drives the magnetic strip 67 to return to its original position. The repulsive force between the magnetic strip 67 and the magnetic block 66 causes the spring teeth 65 to extend and vibrate, shaking off impurities on the surface of the residual film. At the same time, the magnetic repulsive force forces the bent section 652 to extend and return to its original position, preventing the residual film from entangled.

[0033] Example 3: The difference between this embodiment and Embodiments 1 and 2 is that the existing film-picking teeth 55 and rake nails 54 are improved.

[0034] Please see Figure 10 and Figure 11 The film-picking teeth 55 and rake nails 54 are used to hook up residual film, and both the film-picking teeth 55 and rake nails 54 are set on the support rod 64. The support rod 61 is set on the film-collecting belt 52. The support rod 61 is a flexible support rod 61, such as a support rod 61 made of rubber material, which has a certain elasticity. Several magnetic strips 67 are set along the traveling direction of the film-collecting belt. The film-picking teeth 55 and rake nails 54 are both made of iron material.

[0035] During operation, after the film-picking teeth 55 or rake nails 54 pick up the residual film, they are transported to the packaging assembly 7 at the rear end by the film-collecting belt 52. During the transport process, when the film-picking teeth 55 or rake nails 54 pass the magnetic strip 67, since the film-picking teeth 55 and rake nails 54 are made of iron material and the support rod 61 has a certain elasticity, the magnetic strip 67 will attract the film-picking teeth 55 or rake nails 54. After the film-picking teeth 55 or rake nails 54 move away from the magnetic strip 67, the support rod 61 will rebound, thereby causing the film-picking teeth 55 or rake nails 54 to vibrate. This vibration separates the soil, straw stubble and other impurities adhering to the residual film from the residual film.

[0036] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A combined operation machine for straw crushing, residual film recycling, and baling via a synchronous belt, comprising a frame (1) and ground wheels (2), film-lifting wheels (3), and film-collecting components mounted on the frame (1), wherein the ground wheels (2) are used for supporting and moving the frame (1), characterized in that: The ground wheel (2) is coaxially connected to a transmission arm (4), and the other end of the transmission arm (4) is coaxially connected to a film-forming wheel (3) to transmit power between the ground wheel (2) and the film-forming wheel (3); The film collection assembly is a second film collection assembly (6). The second film collection assembly (6) includes a drive shaft (61), a transmission roller (62), and a transmission belt (63). The transmission roller (62) passes through the drive shaft (61) and is coaxially fixedly connected to the drive shaft (61). The two ends of the drive shaft (61) are rotatably connected to the frame (1). There are three transmission rollers (62), and the three transmission rollers (62) form a "triangle" structure. One of the transmission rollers (62) is connected to the film lifting wheel (3) via a belt (53), and the three transmission rollers (62) are connected via the transmission belt (63). The transmission belt (63) is provided with several support rods (64), and the support rods (64) are provided with spring teeth (65) for collecting residual film. The spring tooth (65) is a spring structure. One end of the spring tooth (65) is set on the support rod (64), and the free end is used to pick up residual film. A magnetic block (66) is provided inside the free end of the spring tooth (65). The inner side of the transmission belt (63) is provided with magnetic strips (67) that repel the magnetic block (66). There are several magnetic strips (67), and they are all arranged at intervals along the movement trajectory of the transmission belt (63). The magnetism of the magnetic strips (67) is arranged in a periodic gradient along the movement trajectory of the transmission belt (63). Three adjacent magnetic strips (67) form a group. The magnetic strength of the middle magnetic strip (67) in each group is less than that of the adjacent magnetic strips (67) on both sides. The magnetic strip (67) has an inclined windward surface (671) on the side near the transmission belt (63), and the windward surface (671) is a magnetic surface that repels the magnetic block (66); the magnetic strip (67) is connected to a connecting rod (68), and the two ends of the connecting rod (68) are rotatably connected to the frame (1) respectively. The connection point between the connecting rod (68) and the frame (1) is provided with a torsion spring for resetting the connecting rod (68).

2. The combined operation machine for straw crushing, residual film recycling, and baling via a synchronous belt as described in claim 1, characterized in that: The spring tooth (65) forms an expanded diameter section (651) along the axial direction from the free end to the middle position, and the outer diameter of the expanded diameter section (651) gradually increases from the free end.

3. The combined operation machine for straw crushing, residual film recycling, and baling via a synchronous belt as described in claim 2, characterized in that: The spring tooth (65) includes a curved section (652), which is a flexible curved section (652). The curved section (652) is located behind the free end of the spring tooth (65), and the curved section (652) is bent in its natural state.

4. A combined operation machine for straw crushing, residual film recycling, and baling via a synchronous belt as described in claim 3, characterized in that: The magnetic strip (67) closest to the discharge end of the second film receiving assembly (6) has a magnetic force greater than that of any single magnetic strip (67).

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