A device for breaking up a tobacco ridge mulch

Abstract

The present application relates to a kind of tobacco ridge film breaking equipment, including the mobile trolley that is equipped with film breaking device across the two sides of tobacco ridge and at the center of corresponding tobacco ridge width, the output end of height-adjusting cylinder on the top plate of mobile trolley is fixedly connected with the horizontal part of bending frame plate below top plate, the bottom end of vertical part of bending frame plate is hinged with the handle part of cutter, the horizontal part of bending frame plate is also hinged and installed with electric push rod in one end, the output end of electric push rod is connected with the back part of cutter by hinged hinged rod;Two vertical parts on film breaking device two sides and fixedly connected with roll frame of film winding device are also provided on the top plate, film winding roller is rotatably arranged in roll frame and roll axle one end is drivingly connected with retreat mechanism on roll frame, the other end is drivingly connected with the wheel axle of mobile trolley by transmission mechanism.The present application can realize the film cutting operation and uncovering film operation in multiple growth stages of tobacco plant, and the whole operation process is simple and can liberate manual work.

Description

Technical Field

[0001] This invention belongs to the field of tobacco planting technology, and in particular relates to a device for breaking up mulch film on tobacco ridges. Background Technology

[0002] The transplanting period for tobacco seedlings is in the mid-to-late spring. Due to the low ambient temperature, mulch film is needed to cover the planting rows to ensure warmth and moisture retention after transplanting. However, as daytime temperatures rise and sunlight intensifies, excessive heat accumulates under the mulch film, easily causing seedling dehydration. Therefore, the mulch film needs to be cut to improve heat dissipation during the day and maintain some insulation at night. However, as the seedlings enter the rosette stage and early vigorous growth stage, the mulch film interferes with later fertilization and offers no protection to the plants, necessitating its removal. Current techniques often involve manually tearing the mulch film, but the film is soft and exposed to the elements for extended periods, making it prone to repeated tearing due to inconsistent force application. Therefore, the overall process is cumbersome. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a device for removing mulch film from tobacco ridges. The invention has a simple structure and can perform film-cutting and film-removing operations at multiple growth stages of tobacco plants. The overall operation process is simple and can free up manual labor, making it highly valuable for application and promotion.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A device for removing mulch film on tobacco ridges includes a mobile trolley spanning both sides of the tobacco ridge. The mobile trolley is equipped with a film-breaking device at the center of the corresponding width of the tobacco ridge. The device includes a height-adjusting cylinder mounted on the top plate of the mobile trolley. The output end of the height-adjusting cylinder is 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 is hinged to the handle of a slicing blade. An electric push rod is also hinged to one end of the horizontal part of the bending frame plate. The output end of the electric push rod is connected to the back of the slicing blade through a hinged hinge rod.

[0006] A gantry is also installed on the top plate. The two vertical parts of the gantry are located on both sides of the film breaking device and are fixedly connected to the roller frame of the film winding device. The film winding device also includes a film winding roller that is rotatably mounted on the roller frame. One end of the roller shaft of the film winding roller is connected to the retraction mechanism on the roller frame, and the other end is connected to the roller shaft of the moving trolley through the transmission mechanism.

[0007] Preferably, the back of the scriber has a groove, the end of the hinge rod slides in engagement with the groove and is connected to the inner wall of the groove via a scriber spring.

[0008] Preferably, the transmission mechanism includes a driving pulley coaxially fixed on the roller shaft, a driven pulley sleeved on the roller shaft of the film roll, and the driving pulley and the driven pulley are connected by a belt in a tensioned state to form a belt drive connection.

[0009] Preferably, the driven pulley is assembled with the roller shaft of the film roll via a one-way bearing, and the belt includes a toothed section and a slip section distributed at intervals. The length of the toothed section is greater than that of the slip section, and the toothed section meshes with the pulley for transmission.

[0010] Preferably, the film roll body has flanges fixed at both ends, and the opposite sides of the two flanges have parallel and radially extending limiting grooves. The curved panel arranged parallel to the film roll has sliders at both ends that slide in cooperation with the limiting grooves. The sliders also have limiting rods that penetrate the limiting grooves to the outside. A limiting spring is sleeved on the rod body of the limiting rod.

[0011] Preferably, the roller body and roller shaft of the film winding roller are both hollow and connected, and the end of the roller shaft away from the film breaking device is connected to an external air source.

[0012] Several axially spaced air distribution cylinders are installed on the roller body. An airtight plug is installed inside the air distribution cylinder. A fastening rod is provided at the top of the airtight plug and the top of the fastening rod is sharp. The air distribution cylinder at the bottom of the airtight plug is connected to the internal space of the roller body.

[0013] The curved panel has through holes at the corresponding fastening rods.

[0014] Preferably, the air source includes a main air cylinder mounted on the gantry, one end of the main air cylinder is airtightly fitted with a rubber stopper, the main air cylinder below the rubber stopper is provided with an output end and the output end is connected to and communicates with an exhaust pipe through a flexible hose, and the outer wall of the exhaust pipe is airtightly rotatably connected to the end of the roller shaft through a rotating ring.

[0015] Preferably, the retraction mechanism includes a positioning ring rotatably connected to the roller frame via 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 disc;

[0016] A spiral spring is fitted onto the retraction disc, with one end of the spiral spring connected to the positioning ring and the other end connected to the retraction disc. The cylindrical damper comprises at least two cylinders with compressive friction, with the outermost and innermost cylinders respectively connected to the inner ring wall of the positioning ring and the roller frame.

[0017] Preferably, the positioning ring has several positioning screw holes evenly spaced circumferentially on its surface, and the positioning plate, which extends radially relative to the positioning ring, is fitted with one of the positioning screw holes by a positioning bolt, and the positioning plate has a groove for engaging the end of the spiral spring.

[0018] Preferably, the mobile trolley is also provided with two inclined soil-removing plates attached to the tobacco ridge at the end facing the forward direction.

[0019] The working process of this invention is as follows:

[0020] When the initial film-breaking operation is required, move the invention to the tobacco ridge, then activate the height adjustment cylinder to adjust the height of the cutting blade relative to the tobacco ridge. Simultaneously, by adjusting the intermittent action of the electric actuator output end, the bottom end of the hinge rod drives the cutting blade to swing up and down around the junction of its handle. When the sharp part of the cutting blade is at its lowest point, it can cut the film between adjacent tobacco seedlings. When the cutting blade moves to the tobacco seedlings, the sharp part of the cutting blade is at its highest point to prevent contact with the seedlings and cause damage. This achieves the film-breaking operation, ensuring that the film has a certain heat dissipation effect while retaining a certain degree of heat preservation effect at night.

[0021] When it is necessary to completely remove the mulch film, move the present invention to the tobacco ridge, first use the slicing knife to cut the mulch film at the ridge head into two halves from the center of the width, and then clamp the two halves of the mulch film onto the film rolling roller respectively:

[0022] Pulling up the curved panel causes it to overcome the spring force of the limiting spring and separate from the roller. Then, the end of the mulch film is placed between the curved panel and the roller, and the curved panel is reset, completing the initial fixing of the mulch film. Next, the rubber plug inside the main air cylinder is moved, causing air from the main air cylinder to be pumped into the hose → exhaust pipe → hollow part of the roller, and finally pushing the airtight plug upward in the air distribution cylinder, so that the fastening rod is inserted into the through hole of the curved panel and simultaneously secures the mulch film, completing the final fixing of the end of the mulch film.

[0023] Then, the trolley is pushed along the tobacco rows, with the soil-removing board positioned under the mulch film. As the trolley moves, the soil-removing board causes the mulch film to leave the row surface and shake off the soil covering it. During the movement of the trolley, the roller axle also drives the corresponding film-rolling roller to rotate in the same direction via a drive pulley-belt-driven pulley-one-way bearing (due to the presence of the rotating ring, the rotation of the film-rolling roller and its axle does not cause the exhaust pipe to rotate). The rotation of the film-rolling roller rewinds the mulch film it holds. Since the mulch film has already been cut open in the early stages, and as the tobacco plants grow, the mulch film near the roots of the plants is also broken to complete the seedling removal operation, the mulch film can be continuously torn in half and wound up by the film-rolling roller.

[0024] However, if the tobacco ridge is long, the mulch film is also relatively long. As the mulch film winds around the film-winding roller, its overall outer diameter gradually increases. This causes the trolley's movement to be insufficient to keep up with the film-winding roller's winding progress, which can easily lead to the mulch film being overstretched and breaking. Therefore, this application designs a retraction mechanism to solve the corresponding problem.

[0025] When the moving trolley starts moving, the belt drives the driven pulley to rotate through the toothed belt segment. The driven pulley drives the film roll to rotate forward through the one-way bearing, which in turn drives the retraction rod to rotate forward. The retraction disc, which is fixedly connected to the retraction rod, also rotates forward. However, due to the damping effect between the positioning ring and the roller frame, and the insufficient elasticity of the spiral spring to resist this damping effect, the forward rotation of the retraction disc will first cause the spiral spring to be compressed and deformed, giving the film roll a tendency to rotate in the opposite direction. At the same time, when the spiral spring reaches its maximum deformation value, it will forcibly overcome the damping effect to achieve synchronous rotation of the positioning ring and maintain the maximum deformation of the spiral spring.

[0026] However, when the slippage section of the belt (the slippage section is a smooth, belt-like structure) reaches the driven pulley, the driven pulley cannot rotate. Furthermore, since the driven pulley and roller are assembled via a one-way bearing, the roller and film-winding roller can rotate in the opposite direction under the restoring force of the spiral spring, thus releasing a certain length of mulch film. When the toothed section of the belt contacts the driven pulley again, the driven pulley will drive the film-winding roller to continue rotating forward, compressing the spiral spring again and causing the positioning ring to rotate. It should be noted that the length of each film-winding roller winding includes not only the winding amount during the compression of the spiral spring but also the winding amount during the rotation of the positioning ring, while the length of each film-winding roller unwinding only includes the winding amount during the spiral spring's restoring period. Therefore, the overall mulch film exhibits a repetitive winding-unwinding operation, which compensates for the variable that the winding efficiency exceeds the trolley's movement efficiency, effectively preventing the mulch film from being excessively stretched and breaking during winding.

[0027] Simultaneously, the relative positions of the positioning ring and the retraction disc can be adjusted by adjusting the relative positions of the positioning plate and the positioning ring, thereby adjusting the initial deformation of the spiral spring. This adjustment is reflected in the deformation of the spiral spring during each winding and unwinding process. The purpose is to adjust the tensile strength of the film-winding roller on the film according to the degree of weathering of the film.

[0028] The positioning plate rotates the retraction disc, moving the positioning plate to the target positioning screw hole of the positioning ring. The positioning plate and positioning ring are then connected via positioning bolts, simultaneously fixing the initial deformation of the spiral spring. Specifically, if the mulch film is highly weathered, the initial deformation of the spiral spring is set smaller, allowing for the unwinding of a larger length of mulch film each time; if the mulch film is poorly weathered, the initial deformation of the spiral spring is set larger, allowing for the unwinding of a smaller length of mulch film each time.

[0029] Compared with existing technologies, the present invention has the following advantages: The present invention has a simple structure, enabling film application and removal operations at multiple growth stages of tobacco plants. The overall operation process is simple and frees up manual labor, making it highly valuable for application and promotion. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the breaking device described in a specific embodiment;

[0031] Figure 2 This is a schematic diagram of the membrane breaking device described in a specific embodiment;

[0032] Figure 3 This is a schematic diagram of the structure of the film winding device described in a specific embodiment;

[0033] Figure 4 This is a schematic diagram of the internal structure of the film roll described in a specific embodiment;

[0034] Figure 5 This is a schematic diagram of the retraction mechanism described in a specific implementation;

[0035] Figure 6 An exploded view of the retraction mechanism described in the specific implementation embodiment; Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] like Figure 1-6 As shown, a device for breaking up mulch film on tobacco ridges includes a mobile trolley 1 spanning both sides of the tobacco ridge. Two inclined soil-removing plates 11, positioned against the tobacco ridge, are also provided at the end of the mobile trolley 1 facing the forward direction. A film-breaking device is provided on the mobile trolley 1 at the center of the corresponding width of the tobacco ridge: a height-adjusting cylinder 21 mounted on the top plate of the mobile trolley. The output end of the height-adjusting cylinder 21 is fixedly connected to the horizontal part of a bending frame plate 22 below the top plate. The bottom end of the vertical part of the bending frame plate 22 is hinged to the handle of a cutting blade 23. An electric push rod 26 is also hinged to one end of the horizontal part of the bending frame plate 22. The output end of the electric push rod 26 is hinged to the top end of a hinged rod 27. A groove 24 is provided on the back of the cutting blade 23. The bottom end of the hinged rod 27 slides within the groove 24 and is connected to the inner wall of the groove 24 via a film-breaking spring 26.

[0038] A gantry 12 is also installed on the top plate. The two vertical parts of the gantry 12 are located on both sides of the film breaking device and are fixedly connected to the roller frame 31 of the film winding device. The film winding device also includes a film winding roller 32. The roller shaft 33 of the film winding roller 32 passes through the roller frame 31 and is rotatably connected to the roller frame 31. The two ends of the roller body of the film winding roller 32 are fixedly provided with flanges 34. The opposite sides of the two flanges 34 are provided with mutually parallel and radially extending limiting grooves 35. The curved plate 7 arranged parallel to the film winding roller 32 is provided with sliders 72 that slide with the limiting grooves 35 at both ends. The sliders 72 are also provided with limiting rods 74 that pass through the limiting grooves 35 to the outside. A limiting spring 73 is sleeved on the rod body of the limiting rod 74.

[0039] The roller body and roller shaft 33 of the film rolling roller 32 are both hollow and connected. The end of the roller shaft 33 away from the film breaking device is airtightly connected to the exhaust pipe 53 through the rotating ring 54. The gantry 12 is provided with a main air cylinder 51. One end of the main air cylinder 51 is airtightly provided with a rubber stopper. The main air cylinder 51 below the rubber stopper is provided with an output end, and the output end is connected to the exhaust pipe 53 through a hose 52. Several axially equally spaced air distribution cylinders 35 are passed through the roller body 32. An airtight plug 36 is airtightly fitted inside the air distribution cylinder 35. The top of the airtight plug 36 is provided with a fastening rod 37, and the top of the fastening rod 37 is sharp. The air distribution cylinder 35 at the bottom of the airtight plug 36 is connected to the internal space of the roller body. The curved panel 7 has a through hole 71 at the corresponding fastening rod 37.

[0040] The active pulley 41 is coaxially fixed on the roller shaft of the mobile trolley. The outer wall of the roller shaft 33 of the film winding roller is assembled with the driven pulley 43 through a one-way bearing 44. The belt 42 includes a toothed section and a slip section that are spaced apart. The length of the toothed section is greater than that of the slip section and the toothed section meshes with the pulley for transmission. The active pulley 41 and the driven pulley 43 are connected by belt 42 to form a belt drive.

[0041] The roller frame 31 is provided with a retraction mechanism 6 at one end near the film breaking device, including a positioning ring 61 rotatably connected to the roller frame 31 through a cylindrical damper 68. The positioning ring 61 has several positioning screw holes 62 evenly spaced circumferentially on its ring surface. A positioning plate 66 extending radially relative to the positioning ring 61 is screwed into one of the positioning screw holes 62 by a positioning bolt 67.

[0042] One end of the retraction rod 63 passes through the positioning ring 61 and is fixedly connected to the roller shaft 33. The other end is fixedly provided with a retraction disc 64. A spiral spring 65 is sleeved on the retraction disc 64, and one end of the spiral spring 65 is engaged with a preset groove on the retraction disc 64, and the other end is engaged with a preset groove on the positioning plate 66.

[0043] The working process of this invention is as follows:

[0044] When the initial film-breaking operation is required, move the invention to the tobacco ridge, then activate the height adjustment cylinder 21 to adjust the height of the cutting blade 23 relative to the tobacco ridge. Simultaneously, by adjusting the intermittent action of the output end of the electric actuator 26, the bottom end of the hinge rod 27 drives the cutting blade 23 to swing up and down around the junction of its handle. When the sharp part of the cutting blade 23 is at its lowest point, it can cut the film between adjacent tobacco seedlings. When the cutting blade moves to the tobacco seedlings, the sharp part of the cutting blade is at its highest point to prevent contact with the seedlings and cause damage. This achieves the film-breaking operation, ensuring that the film has a certain heat dissipation effect while also retaining a certain degree of heat preservation effect at night.

[0045] When it is necessary to completely remove the mulch film, move the present invention to the tobacco ridge, first use the slicing knife 23 to cut the mulch film at the ridge head into two halves from the center of the width, and then clamp the two halves of the mulch film onto the film rolling roller 32 respectively:

[0046] Pulling up the curved panel 7 causes it to overcome the elastic force of the limiting spring 73 and separate from the roller. Then, the end of the mulch film is placed between the curved panel 7 and the roller, and the curved panel 7 is reset, completing the initial fixing of the mulch film. Then, the rubber plug inside the main air cylinder 51 is moved, causing air in the main air cylinder 51 to be pumped into the hose 52 → exhaust pipe 53 → hollow part of the roller, and finally pushing the airtight plug 36 upward in the air distribution cylinder 35, so that the fastening rod 37 is inserted into the through hole 71 of the curved panel and simultaneously secures the mulch film, completing the final fixing of the end of the mulch film.

[0047] Then, the moving trolley is pushed along the tobacco ridges, and the soil-removing plate 11 is placed under the mulch film. As the moving trolley moves, the soil-removing plate allows the mulch film to 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 driving pulley 41-belt 42-driven pulley 43-one-way bearing 44 (due to the presence of the rotating ring 54, the rotation of the film-rolling roller and its roller axle will not cause the exhaust pipe 53 to rotate). During the rotation of the film-rolling roller 32, the mulch film held is wound up. Since the mulch film has been cut open in the early stage, and the mulch film near the roots of the tobacco plants has also been broken open in the early stage as the tobacco plants grow to complete the tobacco seedling removal operation, the mulch film can be continuously torn into two halves and wound up by the film-rolling roller.

[0048] However, if the tobacco ridge is long, the mulch film is also relatively long. As the mulch film winds around the film-winding roller, its overall outer diameter gradually increases. This causes the trolley's movement displacement to be insufficient to meet the winding progress of the film-winding roller, which can easily lead to the mulch film being overstretched and breaking. Therefore, this application designs a retraction mechanism 6 to solve the corresponding problem.

[0049] When the mobile trolley starts moving, belt 42 drives driven pulley 43 to rotate through toothed belt segment. Driven pulley 43 drives film roller 32 to rotate forward through one-way bearing 44, which in turn drives retraction rod 63 to rotate forward. Retraction disc 64, which is fixedly connected to retraction rod 63, also rotates forward. However, due to the damping effect between positioning ring 61 and roller frame 31, and the insufficient elasticity of spiral spring 65 to resist the damping effect, the forward rotation of retraction disc 64 will first cause spiral spring 65 to be squeezed and deformed, giving retraction rod 63 and film roller 32 a tendency to rotate in the opposite direction. At the same time, when spiral spring 65 reaches the maximum deformation value, it will forcibly overcome the damping effect to achieve synchronous rotation of positioning ring 61 and maintain the maximum deformation of spiral spring 65.

[0050] However, when the slippage section of belt 42 (the slippage section of the belt has a smooth surface) reaches the driven flat pulley, the driven pulley 43 cannot rotate. Since the driven pulley 43 and roller 33 are assembled via a one-way bearing 44, roller 33 and film-winding roller 32 can rotate freely in the reverse direction. Therefore, under the restoring force of the spiral spring 65, reverse rotation is achieved, thereby releasing a certain length of film. When the toothed section of belt 42 contacts the driven pulley 43 again, the driven pulley 43 will drive the film-winding roller 32 to continue rotating in the forward direction and compress the spiral spring 65 again, as well as drive the positioning ring 61 to rotate. It should be noted that the length of each film-winding roller winding includes not only the winding amount during the compression period of the spiral spring 65 but also the winding amount during the rotation period of the positioning ring 61, while the length of each film-winding roller unwinding only includes the winding amount during the restoring period of the spiral spring 65. Therefore, the overall operation of the mulch film involves repeated winding and unwinding. This can compensate for the variable that the winding efficiency is greater than the trolley movement efficiency, and effectively prevent the mulch film from being excessively stretched and broken during winding.

[0051] Simultaneously, the relative positions of the positioning ring 61 and the retraction disc 64 can be adjusted by adjusting the relative positions of the positioning plate 66 and the positioning ring 61, thereby adjusting the initial deformation of the spiral spring 65. This adjustment is reflected in the deformation of the spiral spring 65 during each winding and unwinding process. The purpose is to adjust the tensile strength of the film-winding roller 32 on the film according to the degree of weathering of the film.

[0052] The positioning plate 66 drives the retraction disc 64 to rotate, moving the positioning plate 66 to the target positioning screw hole 62 of the positioning ring 61. The positioning plate 66 and the positioning ring 61 are connected via the positioning bolt 67, simultaneously fixing the initial deformation of the spiral spring 65. Specifically, if the mulch film is highly weathered, the initial deformation of the spiral spring 65 is set smaller, allowing for greater deformation space during subsequent winding, thus enabling the unwinding of larger lengths of mulch film each time. Conversely, if the mulch film is poorly weathered, the initial deformation of the spiral spring 65 is set larger, resulting in less deformation space during subsequent winding, allowing for the unwinding of smaller lengths of mulch film each time.

Claims

1. A device for removing plastic film from tobacco ridges, comprising a moving trolley spanning both sides of the tobacco ridge, characterized in that, The mobile trolley is equipped with a film-breaking device at the center of the corresponding tobacco row width. The device includes a height-adjusting cylinder mounted 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 slicing knife. An electric push rod is also hinged to one end of the horizontal part of the bending frame plate. The output end of the electric push rod is connected to the back of the slicing knife through a hinged hinge rod. The top plate is also equipped with a gantry. The two vertical parts of the gantry are located on both sides of the film breaking device and are fixedly connected to the roller frame of the film winding device. The film winding device also includes a film winding roller that is rotatably set on the roller frame. One end of the roller shaft of the film winding roller is connected to the retraction mechanism on the roller frame, and the other end is connected to the roller shaft of the moving trolley through the transmission mechanism. The retraction mechanism includes a positioning ring rotatably connected to the roller frame via 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 disc. A spiral spring is fitted on the retraction disc, with one end of the spiral spring connected to the positioning ring and the other end connected to the retraction disc. The transmission mechanism includes a drive pulley coaxially fixed on the roller shaft, a driven pulley sleeved on the roller shaft of the film winding roller, the drive pulley and the driven pulley connected by a tensioned belt to form a belt drive, the driven pulley being assembled with the roller shaft of the film winding roller through a one-way bearing, and the belt including a toothed section and a slip section distributed at intervals, the length of the toothed section being greater than that of the slip section and the toothed section engaging with the pulley for transmission; The film roll has flanges fixed at both ends of its body. The opposite sides of the two flanges have parallel and radially extending limiting grooves. The curved panel parallel to the film roll has sliders at both ends that slide with the limiting grooves. The sliders also have limiting rods that pass through the limiting grooves to the outside. A limiting spring is sleeved on the rod of the limiting rod. The roller body and roller shaft of the film winding roller are both hollow and connected, and the end of the roller shaft away from the film breaking device is connected to an external air source. Several axially spaced air distribution cylinders are installed on the roller body. An airtight plug is installed inside the air distribution cylinder. A fastening rod is provided at the top of the airtight plug and the top of the fastening rod is sharp. The air distribution cylinder at the bottom of the airtight plug is connected to the internal space of the roller body. The curved panel has through holes at the corresponding fastening rods.

2. The device for breaking up the plastic film covering tobacco ridges as described in claim 1, characterized in that, The back of the scriber has a groove, and the end of the hinge rod slides in the groove and is connected to the inner wall of the groove through a scriber spring.

3. The device for breaking up the plastic film covering tobacco ridges as described in claim 1, characterized in that, The air source includes a main air cylinder mounted on a gantry. One end of the main air cylinder is airtightly fitted with a rubber stopper. The main air cylinder below the rubber stopper is provided with an output end, which is connected to and communicates with an exhaust pipe via a flexible hose. The outer wall of the exhaust pipe is airtightly rotatably connected to the end of a roller shaft via a rotating ring.

4. The device for breaking up the plastic film covering tobacco ridges as described in claim 1, characterized in that, The positioning ring has several positioning screw holes evenly spaced circumferentially on its surface. The positioning plate, which extends radially relative to the positioning ring, is fitted with one of the positioning screw holes by a positioning bolt. The positioning plate also has a groove for engaging the end of a spiral spring.

5. The device for breaking up the plastic film covering tobacco ridges as described in claim 1, characterized in that, The mobile trolley is also equipped with two inclined soil-removing plates that are attached to the tobacco ridges at one end facing the forward direction.

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