A vegetable seedling raising film covering device

Abstract

The present invention relates to the technical field of film covering, and particularly relates to a film covering device for vegetable seedling raising, including: a frame body, which is used for supporting the overall components of the device, and walking wheels are rotatably connected to the bottom of the frame body; a unwinding device, which is used for fixing the film roll, a guiding rod is fixedly connected to the top of the unwinding device, the outer wall of the guiding rod is slidably connected to the inner wall of the frame body, and the unwinding device is located at the bottom of the frame body. By setting the unwinding device, when covering the film, the user fixes one end of the plastic film wound around the outside of the reel to the ground, and then as the frame body moves, the plastic film is gradually unwound. At this time, the reel can drive the fixing component to rotate relative to the bracket together. Among them, by setting bearings, the fixing component can rotate freely after being fixed by the bracket and the positioning pressing block, so that the resistance of the reel rotation during the film covering process becomes smaller, and further reduces the possibility of the plastic film being torn and broken during the film covering process.

Description

Technical Field

[0001] The present invention relates to the technical field of film covering, and particularly relates to a film covering device for vegetable seedling raising. Background Art

[0002] Film covering for vegetable seedling raising is an important measure taken during the vegetable seedling raising stage. By laying a film in the seedling raising area, it can play a heat preservation role, maintain an appropriate temperature to promote the growth of seedlings; effectively keep moisture and reduce water loss; it can also block the growth of weeds, create a good growth environment for seedlings, and improve the success rate and quality of seedling raising.

[0003] In the prior art, the uncoated plastic film is usually wound around the outer side of the reel for use. During film covering, if the resistance borne by the reel is too large during the process of rotating relative to the device, it may cause the plastic film to be pulled and broken during the laying process, and then the surface tension of the plastic film during film covering disappears, making the plastic film wound on the surface of the reel loose. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is: a film covering device for vegetable seedling raising, including: a frame body, which is used for supporting the overall components of the device, and the bottom of the frame body is rotatably connected with traveling wheels; a unwinding device, which is used for fixing the film roll, the top of the unwinding device is fixedly connected with a guide rod, the outer wall of the guide rod is slidably connected with the inner wall of the frame body, and the unwinding device is located at the bottom of the frame body; a edge pressing device, which is used for covering soil on both sides of the covered film, the outside of the edge pressing device is fixedly connected with the inner wall of the frame body, a hydraulic telescopic cylinder is fixedly connected to the inner wall of the frame body, and the bottom end of the hydraulic telescopic cylinder is fixedly connected with the top of the unwinding device; a leveling device, which is used for leveling the soil covered by the edge pressing device, the outside of the leveling device is fixedly connected with the inner wall of the frame body, and the leveling device is located on the side of the edge pressing device away from the unwinding device. The frame body can be moved in the field through the traveling wheels. During the movement of the frame body, the film covering process can be completed through the unwinding device. At the same time, it is convenient to cover soil on both sides of the covered film through the edge pressing device, and then the covered soil is leveled by using the leveling device to complete the film covering operation;

[0005] The unwinding device includes a housing, a bracket is fixedly connected to the outside of the housing, a fixing component is movably installed at the top of the bracket, a reel is sleeved outside the fixing component, a plastic film is fixedly connected to the outside of the reel, a positioning pressing block is rotatably connected to the outside of the housing, a moving block is slidably connected to the inner wall of the housing, a rubber roller is rotatably connected to the inside of the moving block, a telescopic rod is fixedly connected to the outside of the moving block, a compression spring is fixedly connected to the outside of the telescopic rod, a telescopic cylinder is fixedly connected to the inner wall of the housing, an output end of the telescopic cylinder is fixedly connected to a displacement plate, a support rod is fixedly connected to a side wall of the displacement plate, and a friction plate is fixedly connected to an outer wall of the support rod. By providing the bracket and the positioning pressing block to fix the fixing component, wherein the positioning pressing block and the bracket are connected by bolts, the fixing component is convenient to disassemble.

[0006] Preferably, the top of the housing is fixedly connected to the bottom of a guide rod, the bottom end of the hydraulic telescopic cylinder is fixedly connected to the top of the housing, the outer wall of the telescopic rod is slidably connected to the inner wall of the displacement plate, and a side of the compression spring away from the telescopic rod is fixedly connected to the inner wall of the housing. By providing the compression spring, the telescopic rod always maintains a tendency to extend. As the thickness of the plastic film wound outside the reel gradually decreases, at this time, under the thrust of the telescopic rod, the moving block can drive the rubber roller to always press on the surface of the plastic film.

[0007] Preferably, both sides of the displacement plate are slidably connected to the inner wall of the housing, the outer wall of the friction plate is in contact with the outer wall of the rubber roller, and the outer wall of the rubber roller is in contact with the outside of the plastic film. When the telescopic cylinder extends, the displacement plate slides along the inside of the housing, and during the sliding process, the friction plate is driven by the support rod to contact the rubber roller, so that the friction plate presses the rubber roller tightly and restricts the rotation of the rubber roller. At this time, the rubber roller presses the reel and the plastic film tightly, and at the same time restricts the rotation of the reel.

[0008] Preferably, the fixing component includes a limiting cylinder, knobs are rotatably connected to both ends of the limiting cylinder, a positive and negative lead screw is fixedly connected to the outside of the knob, a moving ring is threadedly connected to the outer wall of the positive and negative lead screw, a movable rod is rotatably connected to the outside of the moving ring, an outer support plate is fixedly connected to an end of the movable rod away from the moving ring, bearings are rotatably connected to both sides of the outer wall of the limiting cylinder, and the outside of the moving ring is slidably connected to the inner wall of the limiting cylinder. Rotate the knob to drive the positive and negative lead screw inside the limiting cylinder to rotate, so that the two moving rings slide outwards on both sides of the limiting cylinder respectively. At this time, the deflection angle between the movable rod and the positive and negative lead screw becomes larger, and the outer support plate expands outwards.

[0009] Preferably, the edge pressing device includes a feed hopper. A blanking component is fixedly connected to the bottom of the feed hopper. A driving motor is fixedly connected to the outside of the feed hopper. The output end of the driving motor is fixedly connected to a crankshaft. A swing rod is rotatably connected to the outside of the crankshaft. The bottom end of the swing rod is fixedly connected to a connecting rod. The bottom end of the connecting rod is fixedly connected to a soil loosening component. The outside of the soil loosening component is slidably connected to the inner wall of the feed hopper. The outside of the feed hopper is fixedly connected to the inner wall of the frame body. Add soil into the feed hopper, and then the driving motor drives the crankshaft to rotate. During the rotation of the crankshaft, the soil loosening component is driven to do reciprocating motion in the vertical direction through the swing rod and the connecting rod. At this time, the soil can flow downward through the blanking component and press on both sides of the laid plastic film to prevent the plastic film from curling during the laying process.

[0010] Preferably, the soil loosening component includes a rectangular sliding sleeve. A top block is fixedly connected to the top of the rectangular sliding sleeve. An elastic plate is fixedly connected to the bottom of the rectangular sliding sleeve. A support plate is fixedly connected to the inside of the rectangular sliding sleeve. The top of the support plate is fixedly connected to the bottom end of the connecting rod. The bottom of the support plate is fixedly connected to the top of the blanking component. The outside of the rectangular sliding sleeve is slidably connected to the inside of the feed hopper. When the bottom of the elastic plate contacts the bottom of the feed hopper, the elastic plate deforms under the extrusion of the rectangular sliding sleeve, and at the same time, the soil accumulated at the bottom of the feed hopper is gradually pushed to both sides of the feed hopper.

[0011] Preferably, the blanking component includes a discharge pipe. A sliding frame is slidably connected to the inner wall of the discharge pipe. A connecting rod is fixedly connected to the top of the sliding frame. A fixing ring is fixedly connected to the top end of the connecting rod. A dredging block is fixedly connected to the inside of the fixing ring. A sliding column is fixedly connected to the inside of the sliding frame. A conical block is fixedly connected to the bottom end of the sliding column. During the reciprocating motion of the soil loosening component, the sliding column moves together with the support plate and drives the fixing ring to slide up and down along the inner wall of the discharge pipe through the sliding frame and the connecting rod.

[0012] Preferably, the top end of the discharge pipe is fixedly connected to the bottom of the feed hopper. The outside of the sliding frame and the fixing ring are both slidably connected to the inner wall of the discharge pipe. The top end of the sliding column is fixedly connected to the bottom of the support plate. The dredging block and the conical block can make the soil in the discharge pipe flow more smoothly during the discharge process when moving up and down.

[0013] Preferably, the leveling device includes a fixing frame. A connecting shaft is rotatably connected to the bottom of the fixing frame. Rotating frames are fixedly connected to both ends of the connecting shaft. A spiral spring is fixedly connected to the inner wall of the rotating frame. A push rod is fixedly connected to the outer side of the spiral spring. One end of the push rod away from the spiral spring is fixedly connected to an arc-shaped pressing plate. When the rotating frame rotates relative to the fixing frame through the connecting shaft, under the limitation of the positioning shaft, the elastic scraping rod is squeezed and deformed when it contacts the arc-shaped pressing plate, and at the same time, it maintains relative sliding with the arc-shaped pressing plate under the action of its own elastic force. Thus, the soil attached to the surface of the arc-shaped pressing plate can be scraped off by the elastic scraping rod.

[0014] Preferably, the outer wall of the fixing frame is fixedly connected to the inner wall of the frame body. Positioning shafts are fixedly connected to both sides of the fixing frame. An elastic scraping rod is clamped on the outer wall of the positioning shaft. The outer wall of the elastic scraping rod contacts the outer wall of the arc-shaped pressing plate. The outer wall of the push rod is slidably connected to the inner wall of the rotating frame. When the elastic scraping rod separates from one of the arc-shaped pressing plates, the elastic scraping rod recovers its deformation and impacts another arc-shaped pressing plate close to it at this time. At this time, both the arc-shaped pressing plate and the elastic scraping rod generate vibrations during the impact process.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. By providing a unwinding device in the present invention, the hydraulic telescopic cylinder is used to drive the shell to lift, so as to ensure that the unwinding device will not contact the soil during use. By providing a bracket and a positioning pressing block to fix the fixing component, and the positioning pressing block and the bracket are connected by bolts, so that the fixing component is convenient to disassemble. When the fixing component is removed, the reel can be directly sleeved on the outside of the fixing component, and then the fixing component is reinstalled, and the replacement process of the reel can be directly completed. The operation process is simple, which improves the convenience of the user when replacing the reel.

[0017] 2. By providing a fixing component in the present invention, after the reel is sleeved on the outside of the fixing component, the positive and negative lead screws inside the limiting cylinder are rotated by turning the knob, so that the two moving rings slide outwards on both sides of the limiting cylinder respectively. At this time, the deflection angle between the movable rod and the positive and negative lead screws becomes larger, so that the outer support plate expands outwards and contacts the inner surface of the reel. Thus, the fixing component can be fixed to reels of different specifications together.

[0018] 3. By providing a unwinding device in the present invention, during film mulching, the user fixes one end of the plastic film wound around the outside of the reel to the ground. Subsequently, as the frame body moves, the plastic film is gradually unwound. At this time, the reel can drive the fixing component to rotate relative to the bracket together. Among them, by providing bearings, the fixing component can rotate freely after being fixed by the bracket and the positioning pressing block, so that the resistance of the reel rotation during film mulching becomes smaller, and further reduces the possibility of the plastic film being torn and broken during film mulching.

[0019] 4. By providing an unwinding device in the present invention, a compression spring is provided to keep the telescopic rod in a constantly extended tendency. As the thickness of the plastic film wound around the outer side of the drum gradually decreases, at this time, under the thrust of the telescopic rod, the moving block can drive the rubber roller to always press on the surface of the plastic film, thereby preventing the plastic film wound around the outer side of the drum from becoming loose during the unfolding process.

[0020] 5. By providing an unwinding device in the present invention, when the telescopic cylinder extends, the displacement plate slides along the inner side of the housing, and during the sliding process, the friction plate is driven by the support rod to contact the rubber roller, so that the friction plate presses the rubber roller tightly and restricts the rotation of the rubber roller. At this time, the rubber roller presses the drum and the plastic film tightly, and at the same time restricts the rotation of the drum, thereby preventing the plastic film from detaching from the surface of the drum when the device is not in use.

[0021] 6. By providing a edge-pressing device in the present invention, during the film covering process, soil is added to the feed hopper, and then the driving motor drives the crankshaft to rotate. During the rotation of the crankshaft, the soil loosening assembly is driven to do reciprocating motion in the vertical direction through the swing rod and the connecting rod. At this time, the soil loosening assembly can disperse the soil blocks during the movement process, preventing the soil from getting stuck in the feed hopper. Subsequently, the soil can flow downward through the blanking assembly and press on both sides of the laid plastic film, preventing the plastic film from curling during the laying process.

[0022] 7. By providing a soil loosening assembly in the present invention, the top block is provided to disperse the soil blocks. At the same time, by providing an elastic plate, when the bottom of the elastic plate contacts the bottom of the feed hopper, under the extrusion of the rectangular sliding sleeve, the elastic plate deforms, and at the same time, the soil accumulated at the bottom of the feed hopper is gradually pushed to both sides of the feed hopper, enabling it to fall smoothly into the blanking assembly, thereby preventing the soil from accumulating at the bottom of the feed hopper.

[0023] 8. By providing a blanking assembly in the present invention, during the reciprocating motion of the soil loosening assembly, the sliding column moves together with the support plate, and drives the fixed ring to slide up and down along the inner wall of the discharge pipe through the sliding frame and the connecting rod. At this time, the dredging block and the conical block move together, making the soil in the discharge pipe flow more smoothly during the discharge process.

[0024] 9. By providing a leveling device in the present invention, the arc-shaped pressing plate is pushed outward from the rotating frame by the spiral spring, so that during the movement of the frame body, the arc-shaped pressing plate at the bottom can always keep in contact with the soil covered by the edge-pressing device and press it flat. Among them, when the rotating frame rotates relative to the fixed frame through the connecting shaft, under the limitation of the positioning shaft, the elastic scraping rod is deformed when it contacts the arc-shaped pressing plate, and at the same time, it keeps sliding relative to the arc-shaped pressing plate under the action of its own elastic force, thereby scraping the soil attached to the surface of the arc-shaped pressing plate by the elastic scraping rod, eliminating the need for manual cleaning and saving labor costs.

[0025] 10. By providing a leveling device in the present invention, when the elastic scraping rod disengages from one of the arc-shaped pressing plates, the elastic scraping rod recovers its deformation and impacts another arc-shaped pressing plate close to it at this time. At this time, both the arc-shaped pressing plate and the elastic scraping rod generate vibrations during the impact, thereby shaking off the residual soil on the surfaces of the arc-shaped pressing plate and the elastic scraping rod, and more effectively removing the soil adhering to their surfaces or gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the front view of the present invention;

[0027] Figure 2 is the side view of the present invention;

[0028] Figure 3 is the schematic structural diagram of the unwinding device of the present invention;

[0029] Figure 4 is the schematic structural diagram of the housing of the present invention;

[0030] Figure 5 is the schematic structural diagram of the outer side of the rubber roller of the present invention;

[0031] Figure 6 is the schematic structural diagram of the fixing component of the present invention;

[0032] Figure 7 is the lateral sectional view of the unwinding device of the present invention;

[0033] Figure 8 is the present invention Figure 7 schematic diagram of the structure at position A;

[0034] Figure 9 is the schematic structural diagram of the edge pressing device of the present invention;

[0035] Figure 10 is the schematic structural diagram of the soil loosening component of the present invention;

[0036] Figure 11 is the schematic structural diagram of the blanking component of the present invention;

[0037] Figure 12 is the schematic structural diagram of the leveling device of the present invention;

[0038] Figure 13 is the present invention Figure 12 schematic diagram of the structure at position B.

[0039] In the figure: 1, frame body; 2, traveling wheels; 3, unwinding device; 4, guide rod; 5, hydraulic telescopic cylinder; 6, edge pressing device; 7, leveling device; 31, housing; 32, fixing component; 33, winding drum; 34, plastic film; 35, bracket; 36, positioning pressing block; 37, moving block; 38, rubber roller; 39, telescopic rod; 40, compression spring; 41, telescopic cylinder; 42, displacement plate; 43, support rod; 44, friction plate; 321, limiting cylinder; 322, knob; 323, forward and reverse lead screw; 324, moving ring; 325, movable rod; 326, outer support plate; 327, bearing; 61, feed hopper; 62, drive motor; 63, blanking component; 64, crankshaft; 65, swing rod; 66, connecting rod; 67, soil loosening component; 671, rectangular sliding sleeve; 672, top block; 673, support plate; 674, elastic plate; 631, discharge pipe; 632, sliding frame; 633, connecting rod; 634, fixing ring; 635, dredging block; 636, sliding column; 637, tapered block; 71, fixing frame; 72, connecting shaft; 73, rotating frame; 74, push rod; 75, arc-shaped pressing plate; 76, spiral spring; 77, positioning shaft; 78, elastic scraping rod. Detailed implementation manners

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0041] Embodiment: Please refer to Figure 1 - Figure 13 , the present invention provides a technical solution: a vegetable seedling film covering device, including:

[0042] Frame 1, which is used for supporting the overall components of the device. A walking wheel 2 is rotatably connected to the bottom of the frame 1; a film unwinding device 3, which is used for fixing the film roll. A guide rod 4 is fixedly connected to the top of the film unwinding device 3. The outer wall of the guide rod 4 is slidably connected to the inner wall of the frame 1. The film unwinding device 3 is located at the bottom of the frame 1; a edge pressing device 6, which is used for covering soil on both sides of the covered film. The outside of the edge pressing device 6 is fixedly connected to the inner wall of the frame 1. A hydraulic telescopic cylinder 5 is fixedly connected to the inner wall of the frame 1. The bottom end of the hydraulic telescopic cylinder 5 is fixedly connected to the top of the film unwinding device 3; a leveling device 7, which is used for flattening the soil covered by the edge pressing device 6. The outside of the leveling device 7 is fixedly connected to the inner wall of the frame 1. The leveling device 7 is located on the side of the edge pressing device 6 away from the film unwinding device 3. The frame 1 can be moved in the field through the walking wheel 2. During the movement of the frame 1, the film covering process can be completed through the film unwinding device 3. At the same time, it is convenient to cover the soil on both sides of the covered film through the edge pressing device 6. Subsequently, the covered soil can be leveled by using the leveling device 7 to complete the film covering operation;

[0043] The unwinding device 3 includes a housing 31. A bracket 35 is fixedly connected to the outer side of the housing 31. A fixing component 32 is movably installed at the top of the bracket 35. A reel 33 is sleeved outside the fixing component 32. A plastic film 34 is fixedly connected to the outer side of the reel 33. A positioning press block 36 is rotatably connected to the outer side of the housing 31. A moving block 37 is slidably connected to the inner wall of the housing 31. A rubber roller 38 is rotatably connected to the inner side of the moving block 37. A telescopic rod 39 is fixedly connected to the outer side of the moving block 37. A compression spring 40 is fixedly connected to the outer side of the telescopic rod 39. A telescopic cylinder 41 is fixedly connected to the inner wall of the housing 31. The output end of the telescopic cylinder 41 is fixedly connected to a displacement plate 42. A support rod 43 is fixedly connected to the side wall of the displacement plate 42. A friction plate 44 is fixedly connected to the outer wall of the support rod 43. The top of the housing 31 is fixedly connected to the bottom of the guide rod 4. The bottom end of the hydraulic telescopic cylinder 5 is fixedly connected to the top of the housing 31. The outer wall of the telescopic rod 39 is slidably connected to the inner wall of the displacement plate 42. The side of the compression spring 40 away from the telescopic rod 39 is fixedly connected to the inner wall of the housing 31. The two sides of the displacement plate 42 are slidably connected to the inner wall of the housing 31. The outer wall of the friction plate 44 is in contact with the outer wall of the rubber roller 38. The outer wall of the rubber roller 38 is in contact with the outer side of the plastic film 34. When the unwinding device 3 is in use, the unwinding device 3 is guided by arranging the guide rod 4. At the same time, the housing 31 is driven to lift by the hydraulic telescopic cylinder 5, so that the unwinding device 3 will not contact the soil during use. The fixing component 32 is fixed by arranging the bracket 35 and the positioning press block 36. Among them, the positioning press block 36 and the bracket 35 are connected by bolts, so that the fixing component 32 is convenient to disassemble. When the fixing component 32 is removed, the reel 33 can be directly sleeved outside the fixing component 32, and then the fixing component 32 is reinstalled, and the replacement process of the reel 33 can be directly completed. The operation process is simple, which improves the convenience of the user when replacing the reel 33. During film mulching, the user fixes one end of the plastic film 34 wound around the outer side of the reel 33 to the ground. Subsequently, as the frame 1 moves, the plastic film 34 is gradually unwound. At this time, the reel 33 can drive the fixing component 32 to rotate relative to the bracket 35 together. Among them, by arranging a bearing 327, the fixing component 32 can rotate freely after being fixed by the bracket 35 and the positioning press block 36, so that the resistance of the reel 33 during rotation is reduced during film mulching, and further reduces the possibility of the plastic film 34 being torn and broken during film mulching;

[0044] During this process, by arranging the compression spring 40, the telescopic rod 39 is always kept in a stretched state. As the thickness of the plastic film 34 wound around the outer side of the reel 33 gradually decreases, at this time, under the thrust of the telescopic rod 39, the moving block 37 can drive the rubber roller 38 to always press on the surface of the plastic film 34, thereby preventing the plastic film 34 from being wound and loosened during the unwinding process;

[0045] When the telescopic cylinder 41 extends, the displacement plate 42 slides along the inner side of the housing 31, and during the sliding process, the friction plate 44 is driven by the support rod 43 to contact the rubber roller 38, so that the friction plate 44 presses the rubber roller 38 tightly and restricts the rotation of the rubber roller 38. At this time, the rubber roller 38 presses the reel 33 and the ground film 34 tightly, and at the same time restricts the rotation of the reel 33, so that the ground film 34 can be prevented from detaching from the surface of the reel 33 when the device is not in use.

[0046] The fixing component 32 includes a limiting cylinder 321. Knobs 322 are rotatably connected to both ends of the limiting cylinder 321. A positive and negative lead screw 323 is fixedly connected to the outer side of the knob 322. A moving ring 324 is threadedly connected to the outer wall of the positive and negative lead screw 323. A movable rod 325 is rotatably connected to the outer side of the moving ring 324. An outer support plate 326 is fixedly connected to one end of the movable rod 325 away from the moving ring 324. Bearings 327 are rotatably connected to both sides of the outer wall of the limiting cylinder 321. The outer side of the moving ring 324 is slidably connected to the inner wall of the limiting cylinder 321. After the reel 33 is sleeved on the outer side of the fixing component 32, the positive and negative lead screw 323 inside the limiting cylinder 321 is driven to rotate by rotating the knob 322, so that the two moving rings 324 slide outwards on both sides of the limiting cylinder 321 respectively. At this time, the deflection angle between the movable rod 325 and the positive and negative lead screw 323 becomes larger, so that the outer support plate 326 expands outwards and contacts the inner surface of the reel 33, so that the fixing component 32 can be fixed to the reels 33 of different specifications together.

[0047] The edge pressing device 6 includes a feeding hopper 61. A blanking component 63 is fixedly connected to the bottom of the feeding hopper 61. A driving motor 62 is fixedly connected to the outer side of the feeding hopper 61. A crankshaft 64 is fixedly connected to the output end of the driving motor 62. A swing rod 65 is rotatably connected to the outer side of the crankshaft 64. A connecting rod 66 is fixedly connected to the bottom end of the swing rod 65. A soil loosening component 67 is fixedly connected to the bottom end of the connecting rod 66. The outer side of the soil loosening component 67 is slidably connected to the inner wall of the feeding hopper 61. The outer side of the feeding hopper 61 is fixedly connected to the inner wall of the frame body 1. During the film covering process, soil is added into the feeding hopper 61, and then the driving motor 62 drives the crankshaft 64 to rotate. During the rotation process of the crankshaft 64, the soil loosening component 67 is driven to make a reciprocating motion in the vertical direction through the swing rod 65 and the connecting rod 66. At this time, the soil loosening component 67 can disperse the soil blocks during the movement process to prevent the soil from getting stuck in the feeding hopper 61. Then the soil can flow down through the blanking component 63 and press on both sides of the laid ground film 34 to prevent the ground film 34 from curling during the laying process.

[0048] The soil loosening component 67 includes a rectangular sliding sleeve 671. A top block 672 is fixedly connected to the top of the rectangular sliding sleeve 671. An elastic plate 674 is fixedly connected to the bottom of the rectangular sliding sleeve 671. A support plate 673 is fixedly connected to the inner side of the rectangular sliding sleeve 671. The top of the support plate 673 is fixedly connected to the bottom end of the connecting rod 66. The bottom of the support plate 673 is fixedly connected to the top of the blanking component 63. The outer side of the rectangular sliding sleeve 671 is slidably connected to the inner side of the feed hopper 61. When the soil loosening component 67 is operating, the top block 672 is provided to disperse the soil clods. The dispersed soil clods can then flow downward through the gap between the rectangular sliding sleeve 671 and the support plate 673. At the same time, by providing the elastic plate 674, when the bottom of the elastic plate 674 contacts the bottom of the feed hopper 61, the elastic plate 674 deforms under the extrusion of the rectangular sliding sleeve 671. At the same time, the soil accumulated at the bottom of the feed hopper 61 is gradually pushed to both sides of the feed hopper 61, enabling it to smoothly fall into the blanking component 63. Thus, the accumulation of soil at the bottom of the feed hopper 61 can be prevented.

[0049] The blanking component 63 includes a discharge pipe 631. A sliding frame 632 is slidably connected to the inner wall of the discharge pipe 631. A connecting rod 633 is fixedly connected to the top of the sliding frame 632. A fixing ring 634 is fixedly connected to the top end of the connecting rod 633. A dredging block 635 is fixedly connected to the inner side of the fixing ring 634. A sliding column 636 is fixedly connected to the inner side of the sliding frame 632. A conical block 637 is fixedly connected to the bottom end of the sliding column 636. The top end of the discharge pipe 631 is fixedly connected to the bottom of the feed hopper 61. The outer sides of the sliding frame 632 and the fixing ring 634 are both slidably connected to the inner wall of the discharge pipe 631. The top end of the sliding column 636 is fixedly connected to the bottom of the support plate 673. During the reciprocating motion of the soil loosening component 67, the sliding column 636 moves together with the support plate 673, and drives the fixing ring 634 to slide up and down along the inner wall of the discharge pipe 631 through the sliding frame 632 and the connecting rod 633. At this time, the dredging block 635 and the conical block 637 move together, making the discharge of the soil in the discharge pipe 631 smoother.

[0050] The leveling device 7 includes a fixed frame 71. A connecting shaft 72 is rotatably connected to the bottom of the fixed frame 71. Rotating frames 73 are fixedly connected to both ends of the connecting shaft 72. A spiral spring 76 is fixedly connected to the inner wall of the rotating frame 73. A push rod 74 is fixedly connected to the outer side of the spiral spring 76. One end of the push rod 74 away from the spiral spring 76 is fixedly connected to an arc-shaped pressing plate 75. The outer wall of the fixed frame 71 is fixedly connected to the inner wall of the frame body 1. Positioning shafts 77 are fixedly connected to both sides of the fixed frame 71. An elastic scraping rod 78 is clamped on the outer wall of the positioning shaft 77. The outer wall of the elastic scraping rod 78 is in contact with the outer wall of the arc-shaped pressing plate 75. The outer wall of the push rod 74 is slidably connected to the inner wall of the rotating frame 73. When the leveling device 7 is operating, the spiral spring 76 always pushes the arc-shaped pressing plate 75 outwards of the rotating frame 73 through the push rod 74, so that during the movement of the frame body 1, the arc-shaped pressing plate 75 at the bottom can always remain in contact with the soil covered by the edge pressing device 6 and flatten it. Among them, when the rotating frame 73 rotates relative to the fixed frame 71 through the connecting shaft 72, under the limit of the positioning shaft 77, the elastic scraping rod 78 is squeezed and deformed when it contacts the arc-shaped pressing plate 75, and at the same time, it maintains relative sliding with the arc-shaped pressing plate 75 under the action of its own elastic force. Thus, the soil attached to the surface of the arc-shaped pressing plate 75 can be scraped off by the elastic scraping rod 78, without manual cleaning, saving labor costs. When the elastic scraping rod 78 is separated from one of the arc-shaped pressing plates 75, the elastic scraping rod 78 recovers its deformation and impacts another arc-shaped pressing plate 75 close to it at this time. At this time, both the arc-shaped pressing plate 75 and the elastic scraping rod 78 generate vibrations during the impact. Thus, the soil remaining on the surfaces of the arc-shaped pressing plate 75 and the elastic scraping rod 78 can be shaken off, more effectively removing the soil attached to its surface or gaps.

[0051] Working principle:

[0052] During use, the frame body 1 can be moved in the field through the traveling wheels 2. During the movement of the frame body 1, the process of film covering can be completed through the unwinding device 3. At the same time, the edge pressing device 6 is used to cover soil on both sides of the covered film. Subsequently, the leveling device 7 is used to level the covered soil to complete the film covering operation.

[0053] When the unwinding device 3 is in use, the unwinding device 3 is guided by arranging a guide rod 4. At the same time, a hydraulic telescopic cylinder 5 is used to drive the housing 31 to lift, so that the unwinding device 3 will not contact the soil during use. The fixing component 32 is fixed by arranging a bracket 35 and a positioning pressing block 36. Among them, the positioning pressing block 36 and the bracket 35 are connected by bolts, making the fixing component 32 easy to disassemble. When the fixing component 32 is removed, the reel 33 can be directly sleeved on the outside of the fixing component 32. Subsequently, when the fixing component 32 is reinstalled, the replacement process of the reel 33 can be directly completed. The operation process is simple, improving the convenience of the user when replacing the reel 33.

[0054] After sleeving the reel 33 on the outside of the fixing assembly 32, rotate the knob 322 to drive the rotation of the positive and negative screw rod 323 inside the limiting cylinder 321, so that the two moving rings 324 slide outward on both sides of the limiting cylinder 321 respectively. At this time, the deflection angle between the movable rod 325 and the positive and negative screw rod 323 becomes larger, so that the outer support plate 326 expands outward and contacts the inner surface of the reel 33. Thus, the fixing assembly 32 can be fixed to the reels 33 of different specifications together;

[0055] During film covering, the user fixes one end of the plastic film 34 wound around the outside of the reel 33 to the ground. Subsequently, as the frame 1 moves, the plastic film 34 is gradually unfolded. At this time, the reel 33 can drive the fixing assembly 32 to rotate relative to the bracket 35 together. Among them, by setting the bearing 327, the fixing assembly 32 can rotate freely after being fixed by the bracket 35 and the positioning pressing block 36, so that the resistance of the reel 33 during rotation during film covering becomes smaller, and further reduces the possibility that the plastic film 34 is torn and broken during film covering;

[0056] During this process, by setting the compression spring 40, the telescopic rod 39 always maintains a tendency to extend. As the thickness of the plastic film 34 wound around the outside of the reel 33 gradually decreases, at this time, under the thrust of the telescopic rod 39, the moving block 37 can drive the rubber roller 38 to always press on the surface of the plastic film 34. Thus, it can prevent the plastic film 34 wound around the outside of the reel 33 from being slack during the unfolding process;

[0057] When the telescopic cylinder 41 extends, the displacement plate 42 slides along the inside of the housing 31, and during the sliding process, drives the friction plate 44 to contact the rubber roller 38 through the support rod 43, so that the friction plate 44 presses the rubber roller 38 tightly and restricts the rotation of the rubber roller 38. At this time, the rubber roller 38 presses the reel 33 and the plastic film 34 tightly, and at the same time restricts the rotation of the reel 33. Thus, it can prevent the plastic film 34 from detaching from the surface of the reel 33 when the device is not in use;

[0058] During film covering, add soil into the feeding hopper 61, and then the driving motor 62 drives the crankshaft 64 to rotate. During the rotation of the crankshaft 64, the soil loosening assembly 67 is driven to make a reciprocating motion in the vertical direction through the swing rod 65 and the connecting rod 66. At this time, the soil loosening assembly 67 can disperse the soil blocks during the movement process to prevent the soil from getting stuck in the feeding hopper 61. Subsequently, the soil can flow downward through the feeding assembly 63 and press on both sides of the laid plastic film 34 to prevent the plastic film 34 from curling during the laying process;

[0059] When the soil loosening component 67 is in operation, the top block 672 is set to disperse the soil clods. After dispersion, the soil clods can flow downward through the gap between the rectangular sliding sleeve 671 and the support plate 673. At the same time, by setting the elastic plate 674, when the bottom of the elastic plate 674 contacts the bottom of the feed hopper 61, under the extrusion of the rectangular sliding sleeve 671, the elastic plate 674 deforms, and at the same time, the soil accumulated at the bottom of the feed hopper 61 is gradually pushed to both sides of the feed hopper 61, enabling it to smoothly fall into the blanking component 63, thereby preventing soil from accumulating at the bottom of the feed hopper 61;

[0060] During the reciprocating motion of the soil loosening component 67, the sliding column 636 moves together with the support plate 673, and drives the fixed ring 634 to slide up and down along the inner wall of the discharge pipe 631 through the sliding frame 632 and the connecting rod 633. At this time, the dredging block 635 and the conical block 637 move together, making the soil in the discharge pipe 631 flow more smoothly during the discharge process;

[0061] When the leveling device 7 is in operation, the spiral spring 76 always pushes the arc-shaped pressing plate 75 towards the outside of the rotating frame 73 through the push rod 74, so that during the movement of the frame body 1, the arc-shaped pressing plate 75 at the bottom can always remain in contact with the soil covered by the edge pressing device 6 and flatten it. Among them, when the rotating frame 73 rotates relative to the fixed frame 71 through the connecting shaft 72, under the limitation of the positioning shaft 77, the elastic scraping rod 78 is deformed by extrusion when it contacts the arc-shaped pressing plate 75, and at the same time, it maintains relative sliding with the arc-shaped pressing plate 75 under the action of its own elastic force. Thus, the soil attached to the surface of the arc-shaped pressing plate 75 can be scraped off by the elastic scraping rod 78, eliminating the need for manual cleaning and saving labor costs;

[0062] When the elastic scraping rod 78 disengages from one of the arc-shaped pressing plates 75, the elastic scraping rod 78 recovers its deformation and impacts another adjacent arc-shaped pressing plate 75 at this time. At this time, both the arc-shaped pressing plate 75 and the elastic scraping rod 78 vibrate during the impact, thereby shaking off the remaining soil on the surfaces of the arc-shaped pressing plate 75 and the elastic scraping rod 78, and more effectively removing the soil attached to their surfaces or gaps.

[0063] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A vegetable seedling raising film covering device, characterized in that, Comprising: A frame body (1) for supporting the overall components of the device, and a traveling wheel (2) is rotatably connected to the bottom of the frame body (1); A film unwinding device (3) for fixing the film roll. A guide rod (4) is fixedly connected to the top of the film unwinding device (3), and the outer wall of the guide rod (4) is slidably connected to the inner wall of the frame body (1). The film unwinding device (3) is located at the bottom of the frame body (1); A side pressing device (6) for covering soil on both sides of the covered film. The outer side of the side pressing device (6) is fixedly connected to the inner wall of the frame body (1), and a hydraulic telescopic cylinder (5) is fixedly connected to the inner wall of the frame body (1). The bottom end of the hydraulic telescopic cylinder (5) is fixedly connected to the top of the film unwinding device (3); A leveling device (7) for flattening the soil covered by the side pressing device (6). The outer side of the leveling device (7) is fixedly connected to the inner wall of the frame body (1), and the leveling device (7) is located on the side of the side pressing device (6) away from the film unwinding device (3); The film unwinding device (3) includes a housing (31). A bracket (35) is fixedly connected to the outer side of the housing (31). A fixing component (32) is movably installed at the top of the bracket (35). A winding drum (33) is sleeved on the outer side of the fixing component (32). A plastic film (34) is fixedly connected to the outer side of the winding drum (33). A positioning pressing block (36) is rotatably connected to the outer side of the housing (31). A moving block (37) is slidably connected to the inner wall of the housing (31). A rubber roller (38) is rotatably connected to the inner side of the moving block (37). A telescopic rod (39) is fixedly connected to the outer side of the moving block (37). A compression spring (40) is fixedly connected to the outer side of the telescopic rod (39). A telescopic cylinder (41) is fixedly connected to the inner wall of the housing (31). The output end of the telescopic cylinder (41) is fixedly connected to a displacement plate (42). A support rod (43) is fixedly connected to the side wall of the displacement plate (42). A friction plate (44) is fixedly connected to the outer wall of the support rod (43); Both sides of the displacement plate (42) are slidably connected to the inner wall of the housing (31). The outer wall of the friction plate (44) is in contact with the outer wall of the rubber roller (38), and the outer wall of the rubber roller (38) is in contact with the outer side of the plastic film (34); The side pressing device (6) includes a feed hopper (61). A blanking component (63) is fixedly connected to the bottom of the feed hopper (61). A driving motor (62) is fixedly connected to the outer side of the feed hopper (61). The output end of the driving motor (62) is fixedly connected to a crankshaft (64). A swing rod (65) is rotatably connected to the outer side of the crankshaft (64). The bottom end of the swing rod (65) is fixedly connected to a connecting rod (66). The bottom end of the connecting rod (66) is fixedly connected to a soil loosening component (67). The outer side of the soil loosening component (67) is slidably connected to the inner wall of the feed hopper (61). The outer side of the feed hopper (61) is fixedly connected to the inner wall of the frame body (1); The soil loosening component (67) includes a rectangular sliding sleeve (671). A top block (672) is fixedly connected to the top of the rectangular sliding sleeve (671). An elastic plate (674) is fixedly connected to the bottom of the rectangular sliding sleeve (671). A support plate (673) is fixedly connected to the inner side of the rectangular sliding sleeve (671). The top of the support plate (673) is fixedly connected to the bottom end of a connecting rod (66). The bottom of the support plate (673) is fixedly connected to the top of a blanking component (63). The outer side of the rectangular sliding sleeve (671) is slidably connected to the inner side of a feed hopper (61). The blanking component (63) includes a discharge pipe (631). A sliding frame (632) is slidably connected to the inner wall of the discharge pipe (631). A connecting rod (633) is fixedly connected to the top of the sliding frame (632). A fixing ring (634) is fixedly connected to the top end of the connecting rod (633). A dredging block (635) is fixedly connected to the inner side of the fixing ring (634). A sliding column (636) is fixedly connected to the inner side of the sliding frame (632). A conical block (637) is fixedly connected to the bottom end of the sliding column (636). The top end of the discharge pipe (631) is fixedly connected to the bottom of the feed hopper (61). The outer sides of the sliding frame (632) and the fixing ring (634) are both slidably connected to the inner wall of the discharge pipe (631). The top end of the sliding column (636) is fixedly connected to the bottom of the support plate (673).

2. The vegetable seedling raising film covering device according to claim 1, characterized in that: The top of the housing (31) is fixedly connected to the bottom of a guide rod (4). The bottom end of a hydraulic telescopic cylinder (5) is fixedly connected to the top of the housing (31). The outer wall of a telescopic rod (39) is slidably connected to the inner wall of a displacement plate (42). One side of a compression spring (40) away from the telescopic rod (39) is fixedly connected to the inner wall of the housing (31).

3. A vegetable seedling raising film covering device according to claim 1, characterized in that: The fixing component (32) includes a limiting cylinder (321). Knobs (322) are rotatably connected to both ends of the limiting cylinder (321). A positive and negative lead screw (323) is fixedly connected to the outer side of the knob (322). A moving ring (324) is threadedly connected to the outer wall of the positive and negative lead screw (323). An active rod (325) is rotatably connected to the outer side of the moving ring (324). An outer support plate (326) is fixedly connected to one end of the active rod (325) away from the moving ring (324). Bearings (327) are rotatably connected to both sides of the outer wall of the limiting cylinder (321). The outer side of the moving ring (324) is slidably connected to the inner wall of the limiting cylinder (321).

4. A vegetable seedling raising film covering device according to claim 1, characterized in that: The leveling device (7) includes a fixing frame (71). A connecting shaft (72) is rotatably connected to the bottom of the fixing frame (71). Rotating frames (73) are fixedly connected to both ends of the connecting shaft (72). A spiral spring (76) is fixedly connected to the inner wall of the rotating frame (73). A push rod (74) is fixedly connected to the outer side of the spiral spring (76). An arc-shaped pressing plate (75) is fixedly connected to one end of the push rod (74) away from the spiral spring (76).

5. The vegetable seedling cultivation film covering device according to claim 4, wherein: The outer wall of the fixing frame (71) is fixedly connected to the inner wall of the frame body (1). Positioning shafts (77) are fixedly connected to both sides of the fixing frame (71). An elastic scraping rod (78) is clamped on the outer wall of the positioning shaft (77). The outer wall of the elastic scraping rod (78) is in contact with the outer wall of the arc-shaped pressing plate (75). The outer wall of the push rod (74) is slidably connected to the inner wall of the rotating frame (73).

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