Tobacco ridge mulching film breaking and removing equipment

Abstract

The tobacco ridge mulching film breaking equipment comprises a moving trolley which stretches across the two sides of a tobacco ridge and is provided with a film breaking device at the position corresponding to the width center of the tobacco ridge, the output end of a height adjusting air cylinder on a top plate of the moving trolley is fixedly connected with the horizontal portion of a bent frame plate below the top plate, and the bottom end of the vertical portion of the bent frame plate is hinged to the handle portion of a scratching knife. An electric push rod is further hinged to one end of the horizontal part of the bending frame plate, and the output end of the electric push rod is connected with the back part of the scratching knife through a hinged hinge rod; two vertical parts of the door frame are located on the two sides of the film breaking device, the door frame is fixedly connected with a roller frame of the film rolling device, the film rolling roller is rotationally arranged on the roller frame, one end of a roller shaft is in transmission connection with a withdrawing mechanism on the roller frame, and the other end of the roller shaft is in transmission connection with a roller shaft of the moving trolley through a transmission mechanism. Film scratching operation and film uncovering operation in multiple growth stages of tobacco plants can be achieved, the whole operation process is simple, and manpower can be liberated.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco planting, and in particular relates to a device for breaking tobacco ridge ground film. Background Art

[0002] The transplanting period of tobacco seedlings is in the middle and late spring, and the temperature of the growing environment is relatively low, so it is necessary to lay ground film on the tobacco ridges to ensure the heat preservation and moisture retention of the tobacco seedlings after transplanting. However, as time goes by, the daytime temperature gradually rises and the light is strong, too much heat accumulates under the ground film and it is easy to cause dehydration of the tobacco seedlings, so it is necessary to scratch the ground film to improve the heat dissipation effect under the film during the day and maintain a certain heat preservation function at night. However, as the tobacco seedlings enter the clumping stage and the early stage of the vigorous growth period, the presence of the ground film has affected the subsequent topdressing operation and has no protective effect on the tobacco plants, so the ground film needs to be removed. The existing technology mostly uses the method of manually tearing the ground film, but the ground film itself is soft in texture and has been exposed to the outside world for a long time. Unstable force can easily cause the ground film to break repeatedly, so the overall operation is relatively cumbersome. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a device for removing tobacco ridge ground film. The device has a simple structure and can realize film cutting and film peeling operations in multiple growth stages of tobacco plants. The overall operation process is simple and can free up manpower, and has high application and promotion value.

[0004] To achieve the above object, the present invention provides the following technical solutions: A device for removing ground film on tobacco field ridges, comprising a mobile trolley spanning both sides of a tobacco ridge, a film breaking device being provided on the mobile trolley at the center of the width of the corresponding tobacco ridge, comprising a height adjustment cylinder arranged on the top plate of the mobile trolley, the output end of the height adjustment cylinder being fixedly connected to the horizontal part of a bending frame plate below the top plate, the bottom end of the vertical part of the bending frame plate being hinged to the handle part of a cutter, an electric push rod being hingedly installed at one end of the horizontal part of the bending frame plate, the output end of the electric push rod being connected to the back of the cutter through a hinged hinge rod; A door frame is also installed on the top plate, and the two vertical parts of the door frame are located on both sides of the film breaking device and are fixedly connected to the roller frame of the film rolling device. The film rolling device also includes a film rolling roller rotatably arranged on the roller frame, and one end of the roller shaft of the film rolling roller is transmission connected to the retraction mechanism on the roller frame, and the other end is transmission connected to the roller axle of the mobile trolley through the transmission mechanism.

[0005] Preferably, a slide groove is provided on the back of the blade of the scratching knife, and the end of the hinged rod is slidably matched with the slide groove and connected to the inner groove wall of the slide groove through a scratching spring.

[0006] Preferably, the transmission mechanism comprises a driving pulley coaxially fixed on the roller shaft, a driven pulley is sleeved on the roller shaft of the film rolling roller, and the driving pulley and the driven pulley are connected by a belt transmission formed by a tensioned belt.

[0007] Preferably, the driven pulley is assembled with the roller shaft of the film winding roller via a one-way bearing, and the belt comprises toothed belt sections and slipping sections which are spaced apart, the length of the toothed belt section is greater than the slipping section, and the toothed belt section is meshed with the pulley for transmission.

[0008] Preferably, flanges are fixedly provided at both ends of the roller body of the film rolling roller, and limiting grooves which are parallel to each other and extend radially are opened on the opposite sides of the two flanges. Slide blocks which slide with the limiting grooves are provided at both ends of the curved plate arranged parallel to the film rolling roller, and the slider is also provided with a limiting rod which passes through the limiting groove to the outside, and a limiting spring is sleeved on the rod body of the limiting rod.

[0009] Preferably, the roller body and the roller shaft of the film rolling roller are both hollow structures and are connected, and the end of the roller shaft away from the film breaking device is connected to an external air source; The roller body is provided with a plurality of air-distributing cylinders arranged at equal intervals in the axial direction, and an air-tight plug is provided in the air-distributing cylinder for air-tightness. A fastening rod is provided on the top of the air-tight plug, and the top of the fastening rod is sharp. The air-distributing cylinder at the bottom of the air-tight plug is connected with the internal space of the roller body. The plate body of the curved plate is provided with through holes at positions corresponding to the fastening rods.

[0010] Preferably, the air source includes a main air cylinder arranged on the door frame, one end of the main air cylinder is airtightly provided with a rubber plug, the main air cylinder below the rubber plug is provided with an output end and the output end is connected and communicated with the exhaust pipe through a hose, and the outer wall of the exhaust pipe is airtightly rotatably connected with the end of the roller shaft through a rotating ring.

[0011] Preferably, the retraction mechanism comprises a positioning ring rotatably connected to the roller frame through a cylindrical damper, and a retraction rod having one end passing through the positioning ring and fixedly connected to the roller shaft, and the other end fixedly provided with a retraction plate; A scroll spring is sleeved on the retraction plate, and one end of the scroll spring is connected to the positioning ring, and the other end is connected to the retraction plate. The cylindrical damper comprises at least two cylinders with extrusion friction, and the outermost and innermost cylinders are respectively connected to the inner ring wall of the positioning ring and the roller frame.

[0012] Preferably, a plurality of positioning screw holes are circumferentially and evenly spaced on the annular surface of the positioning ring, a positioning plate radially extending relative to the positioning ring is screwed into one of the positioning screw holes through a positioning bolt, and a groove for clamping the end of the spiral spring is provided on the positioning plate.

[0013] Preferably, the movable vehicle is further provided with two inclined soil removing plates arranged close to the chimney at one end facing the forward direction.

[0014] The working process of the present invention is as follows: When film breaking is required in the early stage, the present invention is moved to the tobacco ridge, and then the height adjustment cylinder is turned on to adjust the height of the cutter relative to the tobacco ridge. At the same time, the intermittent action of the output end of the electric push rod is adjusted, so that the bottom end of the hinged rod drives the cutter to swing up and down around the intersection of its handle. When the sharp part of the cutter is at a low point, the ground film between adjacent tobacco seedlings can be cut. When the cutter moves to the tobacco seedling, the sharp part of the cutter is at a high point to prevent contact with the tobacco seedling and cause damage. In this way, the film cutting operation is achieved, ensuring that the ground film has a certain heat dissipation effect while also retaining a certain degree of heat preservation effect at night.

[0015] When it is necessary to completely remove the mulch film, the present invention is moved to the ridge, and the mulch film at the ridge head is firstly split into two halves from the width center by a knife, and then the two sections of the mulch film are clamped on the film roll respectively: Pull up the curved plate so that it overcomes the elastic force of the limit spring and separates from the roller body, then place the end of the ground film between the curved plate and the roller body and reset the curved plate to complete the initial fixation of the ground film. Then operate the rubber plug inside the main air cylinder to move, so that the air in the main air cylinder is pumped into the hose → exhaust pipe → the hollow part of the roller body and finally pushes the airtight plug upward in the sub-air cylinder, so that the fastening rod is inserted into the through hole of the curved plate and the ground film is fastened at the same time, completing the final fixation of the end of the ground film.

[0016] Then start to push the moving trolley along the tobacco ridge, and place the soil removal board under the ground film. Then, during the movement of the moving trolley, the soil removal board can make the ground film leave the ridge surface first and shake off the soil covering it. During the movement of the moving trolley, the roller shaft also drives the corresponding film rolling roller to rotate in the same direction through the active pulley-belt-driven pulley-one-way bearing (due to the existence of the rotating ring, the rotation of the film rolling roller and its roller shaft will not cause the rotation of the exhaust pipe). During the rotation of the film rolling roller, the clamped ground film is rolled up. Since the ground film has been cut open in the early stage, and as the tobacco plants grow in the early stage, the ground film near the roots of the tobacco plants is also broken to complete the tobacco seedling removal operation, the ground film can be continuously torn into two halves and rolled up and wound by the film rolling roller.

[0017] However, if the length of the chimney is large, the relative length of the ground film is also large, so as the ground film is wound on the film roller, its overall outer diameter gradually increases, resulting in the movement of the trolley not being able to meet the winding progress of the film roller, which can easily cause the ground film to be over-tightened and broken; therefore, the present application designs a retraction mechanism to solve the corresponding problem: When the mobile trolley just starts, the belt drives the driven pulley to rotate through the toothed belt segment, and the driven pulley drives the film roller to rotate forward through the one-way bearing, thereby driving the retrieval rod to rotate forward, and the retrieval plate fixed to the retrieval rod also rotates forward, but due to the damping effect between the positioning ring and the roller frame, and the elastic force of the spiral spring is not enough to resist the damping effect, the forward rotation of the retrieval plate will first cause the spiral spring to be squeezed and deformed and give the film roller a tendency to rotate in the opposite direction. At the same time, when the spiral spring reaches the maximum deformation value, it will be forced to overcome the damping effect to achieve the synchronous rotation of the positioning ring and maintain the maximum deformation of the spiral spring.

[0018] However, when the slipping section of the belt (the slipping section of the belt presents a smooth belt body) reaches the driven flat pulley, the driven pulley cannot rotate; and because the driven pulley and the roller shaft are assembled through a one-way bearing, the roller shaft and the film roller can achieve reverse rotation under the effect of the reset elastic force of the vortex spring, thereby releasing a certain length of ground film. When the toothed belt section of the belt contacts the driven pulley again, the driven pulley will drive the film roller to continue to rotate forward and compress the vortex spring again and drive the rotation of the positioning ring. It should be noted that the length of each film roller rewinding not only includes the rewinding amount during the time period of compressing the vortex spring, but also includes the rewinding amount during the time period of driving the positioning ring to rotate, while the length of each film roller unwinding only includes the rewinding amount during the time period of resetting the vortex spring. Therefore, the overall ground film presents a repetitive operation of long rewinding-short unwinding, which can compensate for the corresponding variable that the rewinding efficiency is greater than the trolley moving efficiency, and effectively prevent the ground film from being excessively rewound and stretched and broken.

[0019] At the same time, the relative positions of the positioning ring and the retraction plate can be adjusted by adjusting the relative positions of the positioning plate and the positioning ring, thereby realizing the adjustment of the initial deformation of the scroll spring, which is reflected in the adjustment of the deformation during each winding and unwinding process of the scroll spring. The purpose is to adjust the ultimate tension strength of the film rolling roller on the film according to the weathering degree of the film: The positioning plate drives the retraction plate to rotate and moves the positioning plate to the target positioning screw hole of the positioning ring, and the positioning plate and the positioning ring are connected by the positioning bolts, and the initial deformation of the scroll spring is fixed at the same time. Specifically, if the weathering degree of the ground film is high, the initial deformation of the scroll spring is set to be small, and a larger length of ground film can be unwound each time; if the weathering degree of the ground film is low, the initial deformation of the scroll spring is set to be large, and a smaller length of ground film can be unwound each time.

[0020] Compared with the prior art, the present invention has the following advantages: the present invention has a simple structure, can realize the film stripping and film peeling operations in multiple growth stages of tobacco plants, the overall operation process is simple and can free up manual labor, and has high application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the breaking device described in the specific implementation method; Figure 2 It is a structural schematic diagram of the membrane rupturing device described in the specific implementation method; Figure 3 It is a structural schematic diagram of the film rolling device described in the specific implementation method; Figure 4 It is a schematic diagram of the internal structure of the film rolling roller described in the specific implementation method; Figure 5 It is a structural schematic diagram of the withdrawal mechanism described in the specific implementation method; Figure 6 It is an exploded view of the withdrawal mechanism described in the specific implementation method; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] like Figure 1-6 As shown, a device for removing ground film on a tobacco ridge comprises a movable trolley 1 spanning both sides of the tobacco ridge, and the movable trolley 1 is also provided with two inclined soil removing plates 11 arranged close to the tobacco ridge at one end facing the forward direction, and a film breaking device is provided on the movable trolley 1 at the center of the corresponding tobacco ridge width: it comprises a height-adjusting cylinder 21 arranged on the top plate of the movable trolley, and the output end of the height-adjusting cylinder 21 is fixedly connected to the horizontal part of the bending frame plate 22 below the top plate, and the bottom end of the vertical part of the bending frame plate 22 is hinged to the handle part of the cutting knife 23, and one end of the horizontal part of the bending frame plate 22 is also hingedly installed with an electric push rod 26, and the output end of the electric push rod 26 is hinged to the top end of the hinged rod 27, and the back of the knife 23 is provided with a slide groove 24, and the bottom end of the hinged rod 27 is slidably matched with the slide groove 24 and is connected to the inner groove wall of the slide groove 24 through a film-scratching spring 26.

[0024] A door frame 12 is also installed on the top plate, and the two vertical parts of the door frame 12 are located on both sides of the film breaking device and are fixedly connected to the roller frame 31 of the film rolling device. The film rolling device also includes a film rolling roller 32, and the roller shaft 33 of the film rolling roller 32 passes through the roller frame 31 and is rotatably connected to the roller frame 31. Flanges 34 are fixedly provided at both ends of the roller body of the film rolling roller 32, and the opposite sides of the two flanges 34 are provided with limiting grooves 35 that are parallel to each other and extend radially. Slide blocks 72 that slidably cooperate with the limiting grooves 35 are provided at both ends of the curved plate 7 arranged parallel to the film rolling roller 32. The slider 72 is also provided with a limiting rod 74 that passes through the limiting groove 35 to the outside, and a limiting spring 73 is sleeved on the rod body of the limiting rod 74; The roller body and roller shaft 33 of the film rolling roller 32 are both hollow structures and are connected. The end of the roller shaft 33 away from the film breaking device is air-tightly connected to the exhaust pipe 53 through a rotating ring 54. A main air cylinder 51 is provided on the door frame 12. A rubber plug is air-tightly provided at one end of the main air cylinder 51. The main air cylinder 51 below the rubber plug is provided with an output end, and the output end is connected and communicated with the exhaust pipe 53 through a hose 52. The roller body 32 is pierced with a plurality of air sub-cylinders 35 arranged axially at equal intervals. An air-tight plug 36 is air-tightly fitted inside the air sub-cylinder 35. A fastening rod 37 is provided on the top of the air-tight plug 36, and the top of the fastening rod 37 is sharp. The air sub-cylinder 35 at the bottom of the air-tight plug 36 is communicated with the internal space of the roller body. The plate body of the curved panel 7 is provided with a through hole 71 corresponding to the fastening rod 37.

[0025] A driving pulley 41 is coaxially fixed on the roller shaft of the mobile trolley, and the outer wall of the roller shaft 33 of the film rolling roller is assembled with a driven pulley 43 through a one-way bearing 44. The belt 42 includes toothed belt sections and slipping sections that are distributed at intervals. The length of the toothed belt section is greater than the slipping section and the toothed belt section is meshed with the pulley for transmission. The driving pulley 41 and the driven pulley 43 are connected by a belt drive formed by the belt 42. The roller frame 31 is provided with a retraction mechanism 6 at one end close to the film breaking device, including a positioning ring 61 rotatably connected to the roller frame 31 through a cylindrical damper 68, and a plurality of positioning screw holes 62 are opened on the annular surface of the positioning ring 61 at equal intervals in the circumferential direction, and a positioning plate 66 radially extending relative to the positioning ring 61 is screwed into one of the positioning screw holes 62 through a positioning bolt 67; One end of the retraction rod 63 passes through the positioning ring 61 and is fixedly connected to the roller shaft 33, and the other end is fixedly provided with a retraction plate 64. A spiral spring 65 is sleeved on the retraction plate 64, and one end of the spiral spring 65 is engaged with a preset groove on the retraction plate 64, and the other end is engaged with a preset groove on the positioning plate 66.

[0026] The working process of the present invention is as follows: When film breaking is required in the early stage, the present invention is moved to the tobacco ridge, and then the height adjustment cylinder 21 is turned on to adjust the height of the cutter 23 relative to the tobacco ridge. At the same time, the intermittent action of the output end of the electric push rod 26 is adjusted, so that the bottom end of the hinged rod 27 drives the cutter 23 to swing up and down around the intersection of its handle. When the sharp part of the cutter 23 is at a low point, the ground film between adjacent tobacco seedlings can be cut. When the cutter moves to the tobacco seedling, the sharp part of the cutter is at a high point to prevent contact with the tobacco seedling and cause damage. In this way, the film cutting operation is achieved, ensuring that the ground film has a certain heat dissipation effect while also retaining a certain degree of heat preservation effect at night.

[0027] When it is necessary to completely remove the mulch film, the present invention is moved to the ridge, and the mulch film at the ridge head is firstly split into two halves from the width center by using the cutter 23, and then the two sections of the mulch film are clamped on the film winding roller 32 respectively: The curved plate 7 is pulled upward so that it overcomes the elastic force of the limit spring 73 and separates from the roller body, and then the end of the ground film is placed between the curved plate 7 and the roller body and the curved plate 7 is reset to complete the preliminary fixation of the ground film. Then the rubber plug inside the main air cylinder 51 is operated to move, so that the air in the main air cylinder 51 is pumped into the hose 52 → exhaust pipe 53 → the hollow part of the roller body and finally pushes the airtight plug 36 to move upward in the sub-air cylinder 35, so that the fastening rod 37 is inserted into the through hole 71 of the curved plate and the ground film is fastened at the same time, completing the final fixation of the end of the ground film.

[0028] Then, the moving trolley starts to be pushed along the tobacco ridge, and the soil removal plate 11 is placed under the ground film, and then during the movement of the moving trolley, the soil removal plate can make the ground film leave the ridge surface first and shake off the soil covering it. During the movement of the moving trolley, the roller axle also drives the corresponding film rolling roller 32 to rotate in the same direction through the active pulley 41-belt 42-driven pulley 43-one-way bearing 44 (due to the existence of the rotating ring 54, the turnover of the film rolling roller and its roller shaft will not cause the rotation of the exhaust pipe 53). During the rotation of the film rolling roller 32, the clamped ground film is rolled up. Since the ground film has been cut open in the early stage, and as the tobacco plants grow in the early stage, the ground film near the roots of the tobacco plants is also broken to complete the tobacco plant seedling removal operation, the ground film can be continuously torn into two halves and rolled up and wound by the film rolling roller.

[0029] However, if the length of the chimney is large, the relative length of the ground film is also large, so as the ground film is wound on the film roller, its overall outer diameter gradually increases, resulting in the displacement of the trolley not being able to meet the winding progress of the film roller, which can easily cause the ground film to be over-tightened and broken; therefore, the present application designs a withdrawal mechanism 6 to solve the corresponding problem: When the mobile trolley just starts, the belt 42 drives the driven pulley 43 to rotate through the toothed belt segment, and the driven pulley 43 drives the film roller 32 to rotate forward through the one-way bearing 44, thereby driving the retrieval rod 63 to rotate forward, and the retrieval plate 64 fixedly connected to the retrieval rod 63 also rotates forward, but due to the damping effect between the positioning ring 61 and the roller frame 31, and the elastic force of the spiral spring 65 is not enough to resist the damping effect, the forward rotation of the retrieval plate 64 will first cause the spiral spring 65 to be squeezed and deformed and give the retrieval rod 63 and the film roller 32 a tendency to rotate in the opposite direction. At the same time, when the spiral spring 65 reaches the maximum deformation value, it will forcibly overcome the damping effect to achieve the synchronous rotation of the positioning ring 61 and maintain the maximum deformation of the spiral spring 65.

[0030] However, when the slipping section of the belt 42 (the slipping section of the belt presents a smooth belt body) reaches the driven flat pulley, the driven pulley 43 cannot rotate; and because the driven pulley 43 and the roller shaft 33 are assembled through the one-way bearing 44, the roller shaft 33 and the film roller 32 can rotate freely in the reverse direction, so the reverse rotation is achieved under the reset elastic effect of the volute spring 65, thereby releasing a certain length of ground film. When the toothed belt section of the belt 42 contacts the driven pulley 43 again, the driven pulley 43 will drive the film roller 32 to continue to rotate forward and compress the volute spring 65 again and drive the rotation of the positioning ring 61. It should be noted that the length of each film roller rewinding not only includes the rewinding amount during the time period of compressing the volute spring 65, but also includes the rewinding amount during the time period of driving the positioning ring 61 to rotate, while the length of each film roller unwinding only includes the rewinding amount during the time period of resetting the volute spring 65. Therefore, the overall ground film presents a repeated operation of long winding and short unwinding, which can compensate for the corresponding variable that the winding efficiency is greater than the trolley moving efficiency, and effectively prevent the ground film from being broken due to excessive winding and tensioning.

[0031] At the same time, the relative positions of the positioning ring 61 and the retraction plate 64 can be adjusted by adjusting the relative positions of the positioning plate 66 and the positioning ring 61, thereby realizing the adjustment of the initial deformation of the volute spring 65, and reflecting the adjustment of the deformation of the volute spring 65 during each winding and unwinding process, with the purpose of adjusting the tension limit strength of the film rolling roller 32 on the film according to the weathering degree of the film: The positioning plate 66 drives the retraction plate 64 to rotate and moves the positioning plate 66 to the target positioning screw hole 62 of the positioning ring 61, and the positioning plate 66 and the positioning ring 61 are connected by the positioning bolt 67, and the initial deformation of the spiral spring 65 is fixed. Specifically, if the weathering degree of the ground film is high, the initial deformation of the spiral spring 65 is set to be small, so that the spiral spring 65 has a large deformation space in the subsequent winding process, so that a larger length of ground film can be unwound each time; if the weathering degree of the ground film is low, the initial deformation of the spiral spring 65 is set to be large, so that the spiral spring 65 has a small deformation space in the subsequent winding process, so that a smaller length of ground film can be unwound each time.

Claims

1. A device for breaking the ground film of a chimney ridge, comprising a mobile trolley spanning both sides of the chimney ridge, characterized in that: The mobile trolley is provided with a film breaking device at the center of the corresponding tobacco ridge width, including a height-adjusting cylinder arranged on the top plate of the mobile trolley, the output end of the height-adjusting cylinder is fixedly connected to the horizontal part of the bending frame plate below the top plate, the bottom end of the vertical part of the bending frame plate is hinged to the handle of the cutting knife, and one end of the horizontal part of the bending frame plate is also hingedly installed with an electric push rod, and the output end of the electric push rod is connected to the back of the cutting knife through a hinged hinge rod; A door frame is also installed on the top plate, and the two vertical parts of the door frame are located on both sides of the film breaking device and are fixedly connected to the roller frame of the film rolling device. The film rolling device also includes a film rolling roller rotatably arranged on the roller frame, and one end of the roller shaft of the film rolling roller is transmission connected to the retraction mechanism on the roller frame, and the other end is transmission connected to the roller axle of the mobile trolley through the transmission mechanism.

2. The device for removing the tobacco ridge mulch film according to claim 1, characterized in that: The back of the scratching knife is provided with a sliding groove, the end of the hinged rod is slidably matched with the sliding groove and is connected with the inner groove wall of the sliding groove through a scratching spring.

3. The device for removing the tobacco ridge mulch film according to claim 1, characterized in that: The transmission mechanism comprises a driving pulley coaxially fixed on the roller shaft, a driven pulley is sleeved on the roller shaft of the film rolling roller, and the driving pulley and the driven pulley are connected by a belt transmission formed by a tensioned belt.

4. The device for removing the tobacco ridge mulch film according to claim 3, characterized in that: The driven pulley is assembled with the roller shaft of the film winding roller through a one-way bearing, and the belt includes toothed belt sections and slipping sections that are distributed at intervals. The length of the toothed belt section is greater than the slipping section, and the toothed belt section is meshed with the pulley for transmission.

5. The device for removing the tobacco ridge mulch film according to claim 1, characterized in that: Flanges are fixedly provided at both ends of the roller body of the film rolling roller, and limiting grooves which are parallel to each other and extend radially are opened on the opposite sides of the two flanges. Slide blocks which slide with the limiting grooves are provided at both ends of the curved plate arranged parallel to the film rolling roller. The slider is also provided with a limiting rod which passes through the limiting groove to the outside, and a limiting spring is sleeved on the rod body of the limiting rod.

6. The device for removing the tobacco ridge mulch film according to claim 5, characterized in that: The roller body and the roller shaft of the film rolling roller are both hollow and connected, and one end of the roller shaft away from the film breaking device is connected to an external air source; The roller body is provided with a plurality of air-distributing cylinders arranged at equal intervals in the axial direction, and an air-tight plug is provided in the air-distributing cylinder for air-tightness. A fastening rod is provided on the top of the air-tight plug, and the top of the fastening rod is sharp. The air-distributing cylinder at the bottom of the air-tight plug is connected with the internal space of the roller body. The plate body of the curved plate is provided with through holes at positions corresponding to the fastening rods.

7. The device for removing the tobacco ridge mulch film according to claim 6, characterized in that: The air source includes a main air cylinder arranged on the door frame, one end of the main air cylinder is airtightly provided with a rubber plug, the main air cylinder below the rubber plug is provided with an output end and the output end is connected and communicated with the exhaust pipe through a hose, and the outer wall of the exhaust pipe is airtightly rotatably connected with the end of the roller shaft through a rotating ring.

8. The device for removing the tobacco ridge mulch film according to claim 1, characterized in that: The device for breaking the film of the tobacco ridge is characterized in that the retraction mechanism includes a positioning ring rotatably connected to the roller frame through a cylindrical damper, and a retraction rod with one end passing through the positioning ring and fixedly connected to the roller shaft and the other end fixedly provided with a retraction plate; A scroll spring is sleeved on the retraction plate, one end of the scroll spring is connected to the positioning ring, and the other end is connected to the retraction plate.

9. The device for removing the tobacco ridge mulch film according to claim 8, characterized in that: The annular surface of the positioning ring is provided with a plurality of positioning screw holes at equal intervals in the circumferential direction, a positioning plate radially extending relative to the positioning ring is screwed into one of the positioning screw holes through a positioning bolt, and a groove for clamping the end of the volute spring is provided on the positioning plate.

10. The device for removing the tobacco ridge mulch film according to claim 1, characterized in that: The movable vehicle is also provided with two inclined soil removing plates arranged close to the chimney at one end facing the forward direction.

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