Arched shed film mulching device

Abstract

The invention discloses an arched shed film covering device which comprises a moving vehicle, the moving vehicle is provided with a conveying frame used for placing a U-shaped arched frame, one end of the conveying frame is movably provided with a first push plate, and the first push plate is connected with a first driving assembly; the moving platform is movably arranged on the moving trolley in the vertical direction, the moving platform is located on one side of the output end of the conveying frame, the moving platform is connected with a second driving assembly, the moving platform is provided with a clamping mechanism, the clamping mechanism is used for clamping the single U-shaped lagging jack to be inserted downwards, and a film covering cylinder is arranged on the side, away from the conveying frame, of the clamping mechanism; and the second push plate is rotationally arranged on the moving trolley, is located on the side, away from the clamping mechanism, of the film covering barrel and is connected with a third driving assembly for driving the second push plate to rotate. According to the arched shed film covering device of the structure, continuous operation of conveying, pressing and inserting, film covering and soil covering of the U-shaped arched frame can be completed, manual operation is reduced, and the building efficiency of an arched shed is improved.

Description

Technical Field

[0001] This invention relates to the technical field of agricultural equipment, and more particularly to a greenhouse covering device. Background Technology

[0002] Arched greenhouse cultivation provides crops with a microclimate characterized by favorable temperature, humidity, and light quality. It also helps prevent pests and diseases and reduces the impact of natural disasters, thereby increasing crop yield and quality, allowing for earlier harvests, and extending the growth cycle. Therefore, it is widely used in vegetable cultivation and seedling raising. Currently, the main method for constructing arched greenhouses is as follows: after transplanting seedlings, U-shaped arches are inserted at intervals along the planting direction. A plastic film is then placed over the U-shaped arches, and the sides of the film are pressed against the soil for covering. This entire process requires multiple people to operate, resulting in relatively low efficiency in constructing the arched greenhouse. Summary of the Invention

[0003] To address the above shortcomings, this invention proposes a shed covering device that can complete the continuous operation of conveying, pressing, covering and soiling of U-shaped arch frames, reducing manual operation and improving the construction efficiency of sheds.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A film covering device for arched sheds includes: a mobile trolley, the mobile trolley being equipped with a conveyor frame for placing U-shaped arch frames, one end of the conveyor frame being movably equipped with a first push plate, the first push plate being connected to a first drive assembly; a mobile platform, movably mounted on the mobile trolley in a vertical direction, the mobile platform being located on one side of the output end of the conveyor frame, the mobile platform being connected to a second drive assembly, the mobile platform being equipped with a clamping mechanism for clamping a single U-shaped arch frame for downward insertion, a film covering cylinder being provided on the side of the clamping mechanism away from the conveyor frame; and a second push plate, rotatably mounted on the mobile trolley, the second push plate being located on the side of the film covering cylinder away from the clamping mechanism, the second push plate being connected to a third drive assembly for driving its rotation.

[0005] Furthermore, the conveyor frame includes two opposing side frames, each side frame having an elongated hole along the front-back direction, the elongated hole being used for inserting the rod of the U-shaped arch frame, one end of the elongated hole penetrating the side frame, the mobile vehicle having two opposing side frames, the side frame being installed between the two side frames.

[0006] Furthermore, the first drive assembly includes a screw that is rotatably mounted on the side frame in a front-rear direction. One end of the screw is connected to a first motor. The side frame is provided with a guide rod that is parallel to the screw. One side of the first push plate is threadedly engaged with the screw, and the other side of the first push plate is slidably engaged with the guide rod. The first push plate is located above the side frame.

[0007] Furthermore, the clamping mechanism includes two finger cylinders arranged opposite each other, each finger cylinder having two relatively movable clamping plates with unequal lengths. The extension axis of the elongated hole is located between the two clamping plates. A vertical rod is provided at the upper end of the finger cylinder, and a baffle is connected to the upper end of the vertical rod. When the two clamping plates located outside the side frame clamp a single U-shaped arch frame and insert it downwards, the baffle abuts against the next U-shaped arch frame.

[0008] Furthermore, the side frame is provided with a mounting plate, the mounting plate is provided with a first waist-shaped hole in the left-right direction, the side frame is installed in the first waist-shaped hole by a first bolt, the moving platform is provided with a second waist-shaped hole parallel to the first waist-shaped hole, and the finger cylinder is installed in the second waist-shaped hole by a second bolt.

[0009] Furthermore, the mobile platform is provided with pressing assemblies on both sides, and the mobile platform is provided with a horizontal rod and a vertical plate connected to each other. The pressing assembly includes a pressing roller, and the vertical plate is rotatably connected to a swing rod. One end of the swing rod is rotatably connected to the pressing roller, and the middle of the swing rod is rotatably connected to a connecting rod. One end of the connecting rod is rotatably connected to a slider, and the slider is slidably engaged with the horizontal rod. The horizontal rod is provided with a limit plate, and an elastic element is provided between the limit plate and the slider.

[0010] Furthermore, the mobile vehicle is provided with a transverse plate, and the third drive assembly includes a second motor disposed on the transverse plate. The output end of the second motor is connected to the second push plate. The second drive assembly is a drive cylinder disposed on the mobile vehicle. The telescopic end of the drive cylinder is connected to the mobile platform. The limiting plate is threadedly engaged with the transverse rod. The limiting plate is provided with a pressure sensor. The pressure sensor, the second motor, and the drive cylinder are electrically connected to a controller.

[0011] Furthermore, the mobile vehicle is equipped with a flat plate arranged parallel to the transverse plate, and a vertical rod is provided between the flat plate and the transverse plate, with the mobile platform slidingly engaged with the vertical rod.

[0012] Furthermore, the mobile platform has two side plates arranged opposite each other, and an installation shaft is provided between the two side plates, with the film-coating cylinder sleeved on the installation shaft.

[0013] Compared with existing technologies, the present invention has at least the following beneficial effects: In this invention, the first driving component drives the first pusher plate to move along the conveyor frame, thereby pushing the stacked U-shaped arch frames one by one towards the clamping mechanism. Then, the clamping mechanism clamps a single U-shaped arch frame. The second driving component drives the moving platform to move vertically downward, so that the single U-shaped arch frame is pressed downward into the soil. At the same time, the covering film cylinder moves downward synchronously to cover the previously inserted U-shaped arch frame. Finally, the third driving component drives the second pusher plate to rotate, thereby pushing the soil to cover the side of the film to complete the fixing of the mulch film. Each process is connected in sequence, thereby realizing the continuous operation of U-shaped arch frame conveying, pressing, covering and covering with soil, which helps to reduce manual operation and improve the construction efficiency of the arched shed. Attached Figure Description

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of one embodiment of the arched shed covering device of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure at point A; Figure 3 for Figure 1 A structural diagram from another perspective.

[0015] In the diagram: 100, mobile vehicle; 101, U-shaped arch frame; 102, horizontal plate; 103, flat plate; 104, vertical rod; 110, first push plate; 111, side frame; 112, elongated hole; 113, screw; 114, first motor; 115, guide rod; 116, mounting rod; 117, limiting strip; 120, mobile platform; 121, film-coating cylinder; 122, second waist-shaped hole; 123, horizontal rod; 124, vertical plate; 125, side plate; 126, mounting shaft; 130, second push plate; 131, second motor; 140, side frame; 141, mounting plate; 142, first waist-shaped hole; 150, finger cylinder; 151, upright; 152, baffle; 160, pressure roller; 161, swing rod; 162, connecting rod; 163, slider; 164, limiting plate; 165, elastic element; 170, drive cylinder. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "inner", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] See Figures 1 to 3 A film covering device for arched sheds includes: a mobile cart 100, which is equipped with a conveyor frame for placing U-shaped arch frames 101. A first push plate 110 is movably provided at one end of the conveyor frame, and the first push plate 110 is connected to a first drive assembly; a mobile platform 120, which is movably provided on the mobile cart 100 in a vertical direction, is located on one side of the output end of the conveyor frame, and is connected to a second drive assembly. The mobile platform 120 is equipped with a clamping mechanism for clamping a single U-shaped arch frame 101 and inserting it downwards. A film covering cylinder 121 is provided on the side of the clamping mechanism away from the conveyor frame; and a second push plate 130, which is rotatably provided on the mobile cart 100, is located on the side of the film covering cylinder 121 away from the clamping mechanism, and is connected to a third drive assembly for driving its rotation.

[0021] In the above-described arched shed covering device, during use, the first drive component drives the first push plate 110 to move along the conveyor frame, thereby pushing the stacked U-shaped arch frames 101 one by one towards the clamping mechanism. Then, the clamping mechanism clamps a single U-shaped arch frame 101. The second drive component drives the moving platform 120 to move vertically downward, so that the single U-shaped arch frame 101 is pressed downward into the soil. At the same time, the covering cylinder 121 moves downward synchronously to cover the previously inserted U-shaped arch frame 101. Finally, the third drive component drives the second push plate 130 to rotate, thereby pushing the soil to cover the side of the mulch film to complete the mulch film fixation. Each process is connected in sequence, thereby realizing the continuous operation of conveying, pressing, covering and covering the soil of the U-shaped arch frame 101, which helps to reduce manual operation and improve the construction efficiency of the arched shed.

[0022] Understandably, along the travel direction of the mobile vehicle 100, the U-shaped arch 101 to be installed is located in front of the mulching cylinder 121, and the mulching cylinder 121 is located in front of the second push plate 130. During operation, the first U-shaped arch 101 can be installed first, and the mulch film of the mulching cylinder 121 is placed over the first U-shaped arch 101 to fix one end of the film, thus facilitating the mobile vehicle 100 to drive the mulch film of the mulching cylinder 121 to unfold for subsequent mulching. The mobile vehicle 100 can be an existing agricultural cart, including components such as a drive motor and brakes, enabling the device to move smoothly in a straight line.

[0023] See Figures 1 to 3 Furthermore, the conveyor frame includes two opposing side frames 111, each side frame 111 having an elongated hole 112 along the front-back direction. The elongated hole 112 is used for inserting the rods of the U-shaped arch frame 101. One end of the elongated hole 112 passes through the side frame 111. The moving vehicle 100 has two opposing side frames 140, and the side frame 111 is installed between the two side frames 140. Specifically, in use, the rods of the U-shaped arch frame 101 are inserted into the corresponding elongated holes 112, so that the elongated holes 112 form guide channels for the rods. Then, multiple U-shaped arch frames 101 are sequentially abutted in the horizontal direction. Finally, the first drive assembly drives the first push plate 110 to move, so that multiple U-shaped arch frames 101 move smoothly along the elongated holes 112 to the output end, which is beneficial for the subsequent clamping mechanism to clamp a single U-shaped arch frame 101. Understandably, the upper part of the two side frames 140 is connected to the mounting rod 116, and the lower end of the mounting rod 116 is connected to the limit strip 117. The limit strip 117 abuts against the upper end of the U-shaped arch frame 101, thereby preventing the U-shaped arch frame 101 from tilting or shifting during the conveying process.

[0024] See Figures 1 to 3Furthermore, the first drive assembly includes a screw 113 rotatably mounted on the side frame 140 in the front-rear direction. One end of the screw 113 is connected to a first motor 114. The side frame 140 is provided with a guide rod 115 parallel to the screw 113. One side of the first push plate 110 is threadedly engaged with the screw 113, and the other side of the first push plate 110 is slidably engaged with the guide rod 115. The first push plate 110 is located above the side frame 111. Specifically, the first motor 114 drives the screw 113 to rotate, and the first push plate 110 converts the rotational motion into linear motion using threaded transmission. The guide rod 115 restricts the rotation of the first push plate 110, ensuring that the first push plate 110 moves smoothly along the direction of the screw 113, thereby achieving precise pushing of a single U-shaped arch frame 101 using the first push plate 110. The pushing distance of the U-shaped arch frame 101 can be precisely controlled by the motor speed and rotation time, thereby achieving the output of U-shaped arch frames 101 one by one. Understandably, the screw 113 is rotatably mounted between the two side frames 140 via a deep groove ball bearing. One end of the screw 113 is connected to the output shaft of the first motor 114 via a coupling, and the first motor 114 is fixed to the outside of the side frame 140. In addition, one side of the first push plate 110 is provided with a threaded sleeve that is threadedly engaged with the screw 113, and the other side of the first push plate 110 is provided with a sliding sleeve that is slidably engaged with the guide rod 115.

[0025] See Figures 1 to 3Furthermore, the clamping mechanism includes two finger cylinders 150 arranged opposite each other. Each finger cylinder 150 has two relatively movable clamping plates with unequal lengths. The extension axis of the elongated hole 112 is located between the two clamping plates. A vertical rod 151 is provided at the upper end of the finger cylinder 150. A baffle 152 is connected to the upper end of the vertical rod 151. When the two clamping plates located outside the side frame 111 clamp a single U-shaped arch 101 and insert it downwards, the baffle 152 abuts against the next U-shaped arch 101. Specifically, the two insert rods of a single U-shaped arch frame 101 are located between two outer clamping plates. Two finger cylinders 150 operate to make the two outer clamping plates abut against the corresponding insert rods, thereby clamping the U-shaped arch frame 101. Then, the moving platform 120 moves down, and the two finger cylinders 150 drive the insert rods to insert into the soil. At the same time, the baffle 152 on the upright 151 moves down with the finger cylinders 150, so that the baffle abuts against the next U-shaped arch frame 101, preventing it from slipping down prematurely. This ensures that after the previous U-shaped arch frame 101 is inserted, the next U-shaped arch frame 101 is pushed to the output end, ultimately ensuring the orderly insertion of multiple U-shaped arch frames 101 one by one. In this embodiment, the length of the clamping plate on the outer side of the side frame 111 is greater than that of the inner clamping plate. The inner clamping plate does not participate in the clamping of the U-shaped arch 101. The two outer clamping plates move relative to each other to abut against the corresponding insert of the U-shaped arch 101, allowing the inner clamping plate to avoid the U-shaped portion of the U-shaped arch 101, thus facilitating the upward reset of the finger cylinder 150. In some embodiments, the length of the inner plate 125 of the side frame 111 is greater than that of the outer plate 125. The inner plate 125 is positioned opposite to the outer clamping plate, with the inner clamping plate located between the inner plate 125 and the outer clamping plate. This allows the inner clamping plate to abut against the corresponding insert to limit the end-conveying stroke of a single U-shaped arch 101. It is understood that the finger cylinder 150 is connected to an air supply system via a pipeline. The air supply system uses an on-board air compressor to provide compressed air. The pipeline is equipped with an electromagnetic reversing valve, which is electrically connected to a PLC controller. A photoelectric sensor is installed at the output end of the side frame 111. When the first push plate 110 pushes a single U-shaped arch 101 to the clamping area, the photoelectric sensor detects the U-shaped arch 101 and sends a signal to the PLC controller, thereby triggering the electromagnetic reversing valve to switch, realizing the clamping action of the finger cylinder 150, until the U-shaped arch 101 is inserted into the soil and the PLC controller controls the finger cylinder to release.

[0026] See Figures 1 to 3Furthermore, the side frame 140 is provided with a mounting plate 141, which has a first waist-shaped hole 142 along the left-right direction. The side frame 111 is mounted to the first waist-shaped hole 142 by a first bolt. The moving platform 120 is provided with a second waist-shaped hole 122 parallel to the first waist-shaped hole 142, and the finger cylinder 150 is mounted to the second waist-shaped hole 122 by a second bolt. Specifically, the first waist-shaped hole 142 extends in the left-right direction. Loosening the first bolt allows adjustment of the left-right position of the side frame 111, thereby adjusting the distance between the two side frames 111 to accommodate the conveying of U-shaped arch frames 101 of different sizes. The upper part of the finger cylinder 150 is provided with a mounting seat. The second bolt passes through the mounting seat and the second waist-shaped hole 122 and is locked or unlocked by a nut, which facilitates adjustment of the left-right position of the finger cylinder 150 and ensures that the clamping mechanism is aligned with the elongated hole 112 of the side frame 111, thereby accommodating the insertion of U-shaped arch frames 101 of different widths.

[0027] See Figures 1 to 3 Furthermore, the mobile platform 120 has pressing assemblies arranged opposite to each other on both sides. The mobile platform 120 is provided with a horizontal rod 123 and a vertical plate 124 connected to each other. The pressing assembly includes a pressing roller 160. The vertical plate 124 is rotatably connected to a swing rod 161. One end of the swing rod 161 is rotatably connected to the pressing roller 160. The middle part of the swing rod 161 is rotatably connected to a connecting rod 162. One end of the connecting rod 162 is rotatably connected to a slider 163. The slider 163 is slidably engaged with the horizontal rod 123. The horizontal rod 123 is provided with a limit plate 164. An elastic element 165 is provided between the limit plate 164 and the slider 163. Specifically, during use, the mulching cylinder 121 and the pressure roller 160 move downwards with the moving platform 120, causing the pressure roller 160 to press the mulch film into the soil. The reaction force of the soil causes the pressure roller 160 to swing, which in turn causes the connecting rod 162 to drive the slider 163 to compress the elastic element 165. This elastic element 165 maintains pressure on the mulch film to facilitate subsequent soil covering. One end of the swing rod 161 is rotatably connected to the vertical plate 124 via a pin, and the other end is rotatably connected to the pressure roller 160 via a bearing. The elastic element 165 can be a spring, which is movably sleeved on the horizontal rod 123. The pressure roller 160 uses a rubber wheel to reduce damage to the mulch film.

[0028] See Figures 1 to 3Furthermore, the mobile vehicle 100 is provided with a transverse plate 102. The third drive assembly includes a second motor 131 located on the transverse plate 102. The output end of the second motor 131 is connected to a second push plate 130. The second drive assembly is a drive cylinder 170 located on the mobile vehicle 100. The telescopic end of the drive cylinder 170 is connected to the mobile platform 120. A limiting plate 164 is threadedly engaged with the transverse rod 123. A pressure sensor is provided on the limiting plate 164. The pressure sensor, the second motor 131, and the drive cylinder 170 are electrically connected to a controller. Specifically, the drive cylinder 170 drives the mobile platform 120 to move up and down in the vertical direction, thereby controlling the insertion depth of the U-shaped arch frame 101 by adjusting the telescopic amount of the drive cylinder 170. When the pressure roller 160 presses the mulch film firmly onto the soil, the pressure sensor detects the compression pressure of the elastic element 165 or the resistance pressure of the slider 163. The pressure sensor transmits the signal to the controller, which determines that the mulch film is in a pressed-down state based on a preset pressure threshold. This controller then coordinates the drive cylinder 170 to stop the movement of the moving platform 120 and controls the second motor 131 to operate the second push plate 130 to complete the soil covering. It is understood that the side frame 140 is vertically spaced with two proximity switches, which are electrically connected to the controller, thereby controlling the movement stroke of the moving platform 120. Furthermore, the second push plate 130 can rotate horizontally, requiring its lower end to be embedded in the soil to form a soil covering. The second push plate 130 can also rotate vertically, rotating to form a soil covering.

[0029] See Figures 1 to 3 Furthermore, the mobile vehicle 100 is equipped with a flat plate 103 arranged parallel to the transverse plate 102, and a vertical rod 104 is provided between the flat plate 103 and the transverse plate 102. The mobile platform 120 is slidably engaged with the vertical rod 104. Specifically, the vertical rod 104 provides vertical guidance for the mobile platform 120, restricts the horizontal deviation of the mobile platform 120, ensures that the mobile platform 120 rises and falls smoothly in the vertical direction, and thus ensures the verticality of the U-shaped arch frame 101.

[0030] See Figures 1 to 3 Furthermore, the mobile platform 120 is provided with two side plates 125 facing each other, and an installation shaft 126 is provided between the two side plates 125. The film covering cylinder 121 is sleeved on the installation shaft 126. Specifically, when the mobile vehicle 100 moves forward, the mulch film is pulled and released freely from the film covering cylinder 121, and the film covering cylinder 121 moves synchronously with the mobile platform 120, so as to realize the synchronous insertion of the mulch film and the arch frame, and ensure the continuity of film covering.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A greenhouse covering device, characterized in that, include: A mobile vehicle (100) is provided with a conveyor for placing a U-shaped arch frame (101), and a first push plate (110) is movably provided at one end of the conveyor, the first push plate (110) being connected to a first drive assembly. A mobile platform (120) is movably mounted on the mobile vehicle (100) in a vertical direction. The mobile platform (120) is located on one side of the output end of the conveyor frame. The mobile platform (120) is connected to a second drive assembly. The mobile platform (120) is provided with a clamping mechanism for clamping a single U-shaped arch frame (101) and inserting it downwards. A film-coating cylinder (121) is provided on the side of the clamping mechanism away from the conveyor frame. The second push plate (130) is rotatably mounted on the moving vehicle (100). The second push plate (130) is located on the side of the film-coating cylinder (121) away from the clamping mechanism. The second push plate (130) is connected to a third drive assembly that drives it to rotate.

2. The arched shed covering device according to claim 1, characterized in that, The conveyor frame includes two opposing side frames (111), each side frame (111) having an elongated hole (112) in the front-back direction. The elongated hole (112) is used for inserting the rod of the U-shaped arch frame (101). One end of the elongated hole (112) passes through the side frame (111). The mobile vehicle (100) has two opposing side frames (140), and the side frame (111) is installed between the two side frames (140).

3. The arched shed covering device according to claim 2, characterized in that, The first drive assembly includes a screw (113) that is rotatably mounted on the side frame (140) in the front-rear direction. One end of the screw (113) is connected to a first motor (114). The side frame (140) is provided with a guide rod (115) that is parallel to the screw (113). One side of the first push plate (110) is threadedly engaged with the screw (113), and the other side of the first push plate (110) is slidably engaged with the guide rod (115). The first push plate (110) is located above the side frame (111).

4. The arched shed covering device according to claim 2, characterized in that, The clamping mechanism includes two opposing finger cylinders (150), each finger cylinder (150) having two relatively movable clamping plates with unequal lengths. The extension axis of the elongated hole (112) is located between the two clamping plates. A vertical rod (151) is provided at the upper end of the finger cylinder (150), and a baffle (152) is connected to the upper end of the vertical rod (151). When the two clamping plates located outside the side frame (111) clamp a single U-shaped arch frame (101) and insert it downwards, the baffle (152) abuts against the next U-shaped arch frame (101).

5. The arched shed covering device according to claim 4, characterized in that, The side frame (140) is provided with a mounting plate (141), the mounting plate (141) is provided with a first waist-shaped hole (142) in the left and right direction, the side frame (111) is installed in the first waist-shaped hole (142) by a first bolt, the moving platform (120) is provided with a second waist-shaped hole (122) parallel to the first waist-shaped hole (142), and the finger cylinder (150) is installed in the second waist-shaped hole (122) by a second bolt.

6. The arched shed covering device according to claim 1, characterized in that, The mobile platform (120) has a pressing assembly arranged opposite to each other on both sides. The mobile platform (120) is provided with a horizontal rod (123) and a vertical plate (124) connected to each other. The pressing assembly includes a pressing roller (160). The vertical plate (124) is rotatably connected to a swing rod (161). One end of the swing rod (161) is rotatably connected to the pressing roller (160). The middle part of the swing rod (161) is rotatably connected to a connecting rod (162). One end of the connecting rod (162) is rotatably connected to a slider (163). The slider (163) is slidably engaged with the horizontal rod (123). The horizontal rod (123) is provided with a limit plate (164). An elastic element (165) is provided between the limit plate (164) and the slider (163).

7. A greenhouse covering device according to claim 6, characterized in that, The mobile vehicle (100) is provided with a transverse plate (102). The third drive assembly includes a second motor (131) provided on the transverse plate (102). The output end of the second motor (131) is connected to the second push plate (130). The second drive assembly is a drive cylinder (170) provided on the mobile vehicle (100). The telescopic end of the drive cylinder (170) is connected to the mobile platform (120). The limiting plate (164) is threadedly engaged with the transverse rod (123). The limiting plate (164) is provided with a pressure sensor. The pressure sensor, the second motor, and the drive cylinder (170) are electrically connected to a controller.

8. The arched shed covering device according to claim 7, characterized in that, The mobile vehicle (100) is provided with a flat plate (103) arranged parallel to the horizontal plate (102), and a vertical rod (104) is provided between the flat plate (103) and the horizontal plate (102). The mobile platform (120) is slidably engaged with the vertical rod (104).

9. A greenhouse covering device according to claim 1, characterized in that, The mobile platform (120) has two side plates (125) arranged opposite to each other, and an installation shaft (126) is arranged between the two side plates (125). The film-coating cylinder (121) is sleeved on the installation shaft (126).

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