Truck waterproof cloth folding and unfolding equipment and control system

Abstract

The invention belongs to the technical field of waterproof cloth folding and unfolding, and discloses a truck waterproof cloth folding and unfolding device and a control system.The truck waterproof cloth folding and unfolding device comprises a support, a moving trolley, a lifting frame and a supporting frame and further comprises a first adjusting assembly used for adjusting the height of waterproof cloth, and the first adjusting assembly is arranged in the support and used for adjusting the height of the waterproof cloth; through cooperation of the first adjusting assembly and the second adjusting assembly, different height ranges can be adjusted, the container height requirements of light-duty to heavy-duty trucks can be met, the practicability of the equipment is improved, through linkage of the supporting assembly and the first adjusting assembly, the supporting assembly is automatically unfolded to form triangular supporting, the transverse supporting span is increased, and the supporting effect is improved. Toppling moment caused by upward movement of the gravity center is effectively counteracted, and stability of the support is improved.

Description

Technical Field

[0001] This invention belongs to the field of tarpaulin deployment and retraction technology, specifically a truck tarpaulin deployment and retraction device and control system. Background Technology

[0002] In the logistics and transportation sector, trucks need to be covered with tarpaulins after loading goods to prevent them from being soaked by rainwater, contaminated by dust, or falling off. The efficiency and safety of tarpaulin deployment and dismantling operations directly affect freight turnover efficiency.

[0003] Existing tarpaulin deployment and retraction equipment mostly uses fixed-height brackets or simple manual lifting structures, which cannot flexibly adjust the tarpaulin laying height according to the height of the truck's cargo box. When dealing with trucks of different heights, manual assistance is required to lift the tarpaulin or replace it with a suitable bracket, which not only increases labor intensity but also easily leads to uneven tarpaulin laying due to height deviation, resulting in problems such as leaks and wrinkles. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a truck tarpaulin deployment and retraction device and control system.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a truck tarpaulin deployment and retraction device and control system, comprising a mobile trolley, a bracket, a lifting frame, and a support frame, characterized in that the device further comprises: A first adjustment component for adjusting the height of the tarpaulin, the first adjustment component being disposed inside the bracket; Two support components are used to support the bracket, and the two support components are respectively disposed on both sides of the bracket; The lifting frame is internally provided with a second adjustment component, which includes multiple rollers and a connecting frame. The multiple rollers are evenly divided into two groups, and the two groups of rollers are slidably disposed on both sides of the inner wall of the lifting frame, and the two groups of rollers are movably disposed on both sides of the connecting frame. A laying assembly is provided on one side of the connecting frame. The laying assembly includes a connecting cylinder, a hydraulic rod, a rack, a spur gear, and a protective box. The connecting cylinder is mounted at the center of one side of the connecting frame via a bearing. The hydraulic rod is installed on the inner wall of the bottom of the lifting frame. The output end of the hydraulic rod is fixedly mounted on one side of the rack. One side of the rack meshes with the outer surface of the spur gear. The spur gear is fixedly mounted on one side of the connecting cylinder. The protective box is fixedly mounted at one end of the connecting cylinder. The laying assembly also includes a rotating rod, a fabric rolling rod, two mounting bases, two electric push rods, and two fixing plates. The rotating rod is mounted on the inner wall of the protective box via bearings. The fabric rolling rod is connected to one end of the rotating rod via a flange. The two mounting bases are fixedly mounted on the inner wall of the fabric rolling rod. The two electric push rods are respectively mounted on one side of the two mounting bases. The two fixing plates are respectively fixedly mounted on the output ends of the two electric push rods. The support frame is fixedly mounted on one side of the bracket, the lifting frame is slidably mounted on the inner wall of the support frame, and the moving trolley is installed at the bottom of the bracket.

[0006] In the above technical solution, preferably, the first adjusting component includes a lead screw, a first slider, a crossbar, and a second slider. The lead screw is disposed on both sides of the inner wall of the bracket via bearings. The first slider is threaded onto the outer surface of the lead screw. The crossbar is fixedly disposed on both sides of the inner wall of the bracket. The second slider is movably disposed on the outer surface of the crossbar.

[0007] In the above technical solution, preferably, the first adjustment component further includes a connecting plate, two transmission rods and two protruding plates. The two sides of the connecting plate are respectively fixedly disposed on the opposite sides of the first slider and the second slider. One end of each of the two transmission rods is movably disposed on the inner wall of the first slider and the second slider, and the other end of each of the two transmission rods is movably disposed on the inner wall of the two protruding plates. The opposite sides of the two protruding plates are disposed on both sides of the support frame by screws.

[0008] In the above technical solution, preferably, both of the supporting components include a connecting seat, a cylinder, a piston plate, a support rod, and a caster wheel. The connecting seat is screwed to one side of the bracket, and one side of the connecting seat is fixedly disposed on the outer surface of the cylinder. The piston plate is in close contact with the inner wall of the cylinder. The support rod is fixedly disposed on one side of the piston plate. The caster wheel is installed at one end of the support rod. A return spring is fixedly disposed on one side of the piston plate, and one end of the return spring is fixedly disposed on one side of the inner wall of the cylinder.

[0009] In the above technical solution, preferably, the support assembly further includes a sealing box, a push plate, a first magnet, a second magnet, and a guide pipe. The sealing box is fixedly disposed on the inner wall of the bracket, the push plate is movably embedded in the inner wall of the sealing box, the push plate is fixedly disposed on one side of the first magnet, one side of the second magnet is fixedly disposed on one side of the connecting plate, and the two ends of the guide pipe are respectively connected to the sealing box and the cylinder, for guiding the gas in the sealing box into the cylinder.

[0010] In the above technical solution, preferably, the second adjustment component further includes a synchronizing rod, two chains, and a stepper motor. The two ends of the synchronizing rod are rotatably connected to the inner walls on both sides of the lifting frame. The two chains are fixedly sleeved on the outer surface of the synchronizing rod. Both chains are drivenly connected to the inner walls of the two chains. One end of each chain is fixedly connected to the top of the connecting frame.

[0011] In the above technical solution, preferably, the other ends of both chains are fixedly connected to the support frame, the stepper motor is installed on one side of the lifting frame, and the output shaft of the stepper motor is connected to one end of the synchronizing rod.

[0012] In the above technical solution, preferably, the second magnet can magnetically attract the first magnet inside the sealed box.

[0013] A control system for a truck tarpaulin retraction device includes the aforementioned retraction device, and the system further includes a control module, a sensor module, an execution module, and a remote control module; The control module includes a control box, which uses a PLC controller as the core control unit to receive signals from each module and issue control commands. The control box is installed on one side of the bracket. The sensor module includes a lidar and a height detector. The lidar is used to collect the position and outline information of the truck and is installed on one side of the mobile trolley. The height detector is used to detect the height of the fabric rolling rod and is installed on one side of the protective box. The execution module includes a bidirectional motor, a stepper motor, a pinion gear, and a large gear. The bidirectional motor is used to drive the lead screw to rotate. The bidirectional motor is installed on one side of the bracket, and the output shaft of the bidirectional motor is fixedly set at one end of the lead screw. The stepper motor is used to drive the fabric winding rod to rotate. The stepper motor is installed on one side of the inner wall of the protective box. The pinion gear is fixedly set on the output shaft of the stepper motor. The pinion gear meshes with the large gear, and the large gear is fixedly sleeved on the outer surface of the fabric winding rod. The remote control module includes a wireless remote controller and a receiving unit; The autonomous driving module is integrated into the PLC controller in the control box. The autonomous driving module has path planning, obstacle avoidance, precise positioning, operation monitoring, and emergency braking functions. After the manual roll of the tarpaulin onto the roll rod, the equipment automatically rises, autonomously walks to the truck to release the tarpaulin, and autonomously retreats to the designated position to wait for the roll of the second tarpaulin.

[0014] In the above technical solution, preferably, the receiving unit is located inside the control box and adopts a 2.4GHz wireless communication protocol. The remote control module is signal-connected to the control module to realize remote control. The sensor module is electrically connected to the control module, and the control module is electrically connected to the execution module to form a control link.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention, through the synergy of the first adjustment component and the second adjustment component, can adjust different height ranges, covering the cargo box height requirements of light to heavy-duty trucks, thereby improving the practicality of the equipment.

[0016] 2. The present invention achieves this by linking the support component with the first adjustment component, which automatically unfolds the support component to form a triangular support, increases the lateral support span, effectively counteracts the tilting moment caused by the upward shift of the center of gravity, and improves the stability of the support. Attached Figure Description

[0017] Figure 1 This invention presents a schematic diagram of the overall three-dimensional structure of a truck tarpaulin deployment and retraction device and control system.

[0018] Figure 2 This invention provides a side-view three-dimensional structural diagram of a truck tarpaulin deployment and retraction device and control system.

[0019] Figure 3 This invention provides a cross-sectional three-dimensional structural diagram of the support frame in a truck tarpaulin deployment and control system.

[0020] Figure 4 This invention provides a schematic diagram of the internal three-dimensional structure of the bracket in a truck tarpaulin deployment and control system.

[0021] Figure 5 This invention provides a partial three-dimensional structural diagram of a truck tarpaulin deployment and retraction device and control system.

[0022] Figure 6 This invention provides a three-dimensional structural diagram of the internal structure of the protective box in a truck tarpaulin retraction and control system.

[0023] Figure 7 This invention provides a cross-sectional three-dimensional structural diagram of the fabric rolling rod in a truck tarpaulin retraction and control system.

[0024] Figure 8 This invention provides a cross-sectional three-dimensional structural diagram of the cylinder in a truck tarpaulin retraction and control system.

[0025] Figure 9 This invention provides a cross-sectional perspective view of the sealed box in a truck tarpaulin retraction and control system.

[0026] Figure 10 This invention proposes a truck tarpaulin deployment and retraction device and control system. Figure 3 Enlarged view at point A in the middle. Figure 11 The present invention provides a system diagram of a truck tarpaulin deployment and retraction device and control system.

[0027] Legend: 1. Bracket; 101. Moving trolley; 102. Lifting frame; 103. Support frame; 2. First adjusting component; 201. Lead screw; 202. First slider; 203. Crossbar; 204. Second slider; 205. Connecting plate; 206. Transmission rod; 207. Protruding plate; 3. Second adjusting component; 301. Roller; 302. Connecting frame; 303. Synchronizing rod; 304. Sprocket; 305. Chain; 306. Stepper motor; 4. Laying component; 401. Connecting cylinder; 402. Hydraulic rod; 403. Rack; 404. Spur gear; 405. Protective gear 406. Box; 407. Rotating rod; 408. Fabric rolling rod; 409. Mounting base; 410. Electric push rod; 5. Fixing plate; 601. Support assembly; 502. Connecting seat; 503. Cylinder; 504. Piston plate; 505. Support rod; 506. Universal wheel; 507. Return spring; 508. Sealing box; 509. Push plate; 510. First magnet; 511. Second magnet; 602. Guide tube; 603. LiDAR; 604. Height detector; 605. Control box; 606. Bidirectional motor; 607. Stepper motor; 608. Pinion; 609. Large gear. Detailed Implementation

[0028] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 10 As shown, the present invention provides a truck tarpaulin deployment and retraction device, which includes a bracket 101, a mobile trolley 1, a lifting frame 102, and a support frame 103. The device is characterized in that it further includes: The first adjustment component 2 for adjusting the height of the tarpaulin is disposed inside the bracket 101; The first adjustment assembly 2 includes a lead screw 201, a first slider 202, a crossbar 203, and a second slider 204. The lead screw 201 is mounted on both sides of the inner wall of the bracket 101 via bearings. The first slider 202 is threaded onto the outer surface of the lead screw 201. The crossbar 203 is fixedly mounted on both sides of the inner wall of the bracket 101. The second slider 204 is movably mounted on the outer surface of the crossbar 203. The first adjustment assembly 2 also includes a connecting plate 205, two transmission rods 206, and two protruding plates 207. The two sides of the connecting plate 205 are fixedly mounted on opposite sides of the first slider 202 and the second slider 204, respectively. One end of each of the two transmission rods 206 is movably mounted on the inner wall of the first slider 202 and the second slider 204, respectively. The other end of each of the two transmission rods 206 is movably mounted on the inner wall of each of the two protruding plates 207, respectively. The opposite sides of the two protruding plates 207 are mounted on both sides of the support frame 103 via screws.

[0030] In use, the second slider 204 can slide on the outer surface of the crossbar 203. The second slider 204 is connected to the first slider 202 through the connecting plate 205. Thus, when the lead screw 201 rotates in different directions, the first slider 202 moves to different positions on the outer surface of the lead screw 201. The control box 603 controls the rotation of the bidirectional motor 604. The output shaft of the bidirectional motor 604 can rotate in both directions. At this time, the output shaft of the bidirectional motor 604 drives the lead screw 201 to rotate clockwise, which further causes the first slider 202 to move towards the lifting frame 102. The two transmission rods 206 can rotate around the two protruding plates 207 and the connection point of the first slider 202 and the second slider 204. Thus, when the first slider 202 and the second slider 204 move towards the lifting frame 102, one end of the two transmission rods 206 will push the two protruding plates 207 upward, which further causes the support frame 103 to move upward.

[0031] Please see Figures 1 to 10In one embodiment, two support components 5 are used to support the bracket 101. The two support components 5 are respectively disposed on both sides of the bracket 101. Each support component 5 includes a connecting seat 501, a cylinder 502, a piston plate 503, a support rod 504, and a caster wheel 505. The connecting seat 501 is screwed to one side of the bracket 101, and one side of the connecting seat 501 is fixedly disposed on the outer surface of the cylinder 502. The piston plate 503 is tightly attached to the inner wall of the cylinder 502. The support rod 504 is fixedly disposed on one side of the piston plate 503. The caster wheel 505 is installed at one end of the support rod 504. A return spring 506 is fixedly disposed on one side of the piston plate 503. One end of 6 is fixedly set on one side of the inner wall of cylinder 502. The two piston plates 503 can slide on the inner walls of the two cylinders 502 respectively. When the two piston plates 503 are squeezed by gas, they will move forward, which will further cause the two support rods 504 to drive the two casters 505 to move, and then make the moving wheels on the two casters 505 contact the ground. The angle between the two cylinders 502 and the two sides of the bracket 101 is 30 to 45 degrees. At this time, the two cylinders 502 and the two support rods 504 form a triangular support system with the two sides of the bracket 101. When the bracket 101 moves, the moving wheels on the two casters 505 facilitate the movement of the bracket 101.

[0032] In another embodiment, the support assembly 5 further includes a sealing box 507, a push plate 508, a first magnet 509, a second magnet 510, and a guide pipe 511. The sealing box 507 is fixedly disposed on the inner wall of the bracket 101. The push plate 508 is movably embedded in the inner wall of the sealing box 507. The push plate 508 is fixedly disposed on one side of the first magnet 509. One side of the second magnet 510 is fixedly disposed on one side of the connecting plate 205. The second magnet 510 can magnetically attract the first magnet 509 inside the sealing box 507. The two ends of the guide pipe 511 are respectively connected to the sealing box 507 and the cylinder 502, and are used to circulate the contents of the sealing box 507. As the gas is introduced into the cylinder 502, the first slider 202 moves toward the lifting frame 102, and the connecting plate 205 drives the second magnet 510 to move. The push plate 508 can slide on the inner wall of the sealing box 507. The first magnet 509 and the second magnet 510 have magnetic force and are attracted together through the sealing box 507. At this time, the second magnet 510 drives the first magnet 509 to move, which further causes the push plate 508 to move toward the lifting frame 102 inside the sealing box 507. This further compresses the gas inside the sealing box 507 and forces the gas through the two guide pipes 511 into the inside of the two cylinders 502.

[0033] Please see Figures 1 to 10In one embodiment, a second adjustment assembly 3 is provided inside the lifting frame 102. The second adjustment assembly 3 includes multiple rollers 301, a connecting frame 302, a synchronizing rod 303, two sprockets 304, two chains 305, and a stepper motor 306. The multiple rollers 301 are evenly divided into two groups, and the two groups of rollers 301 are slidably disposed on both sides of the inner wall of the lifting frame 102. The two groups of rollers 301 are movably disposed on both sides of the connecting frame 302. The two ends of the synchronizing rod 303 are rotatably connected to the inner walls on both sides of the lifting frame 102. The two sprockets 304 are fixedly sleeved on the outer surface of the synchronizing rod 303. The two sprockets 304 are both drive-connected to the inner walls of the two chains 304. One end of each of the two chains 305 is fixedly connected to the top of the connecting frame 302, and the other end of each of the two chains 305 is fixedly connected to the support frame 103. The stepper motor 306 is installed on one side of the lifting frame 102. The output of the stepper motor 306 is... One end of the shaft is connected to the synchronous rod 303. By turning on the external power switch of the stepper motor 306, the output shaft of the stepper motor 306 drives the synchronous rod 303 to rotate. The output shaft of the stepper motor 306 can rotate in both directions. At this time, the output shaft of the stepper motor 306 drives the synchronous rod 303 to rotate counterclockwise, which in turn drives the two sprockets 304 to rotate counterclockwise. One end of the two chains 305 is connected to the support frame 103, and the other end is connected to the connecting frame 302. When the two sprockets 304 rotate in different directions, they drive the connecting frame 302 to rise or fall. The height of the protective box 405 can be detected by the height detector 602. When the protective box 405 is 20 to 30 centimeters higher than the truck, the power of the stepper motor 306 is turned off. At this time, multiple rollers 301 roll on the inner wall of the lifting frame 102 to facilitate the movement of the connecting frame 302 and further adjust the height of the fabric rolling rod 407.

[0034] Please see Figures 1 to 10 In one embodiment, a laying assembly 4 is provided on one side of the connecting frame 302. The laying assembly 4 includes a connecting cylinder 401, a hydraulic rod 402, a rack 403, a spur gear 404, and a protective box 405. The connecting cylinder 401 is mounted at the center of one side of the connecting frame 302 via a bearing. The hydraulic rod 402 is installed on the inner wall of the bottom of the lifting frame 102. The output end of the hydraulic rod 402 is fixedly disposed on one side of the rack 403. One side of the rack 403 meshes with the outer surface of the spur gear 404. The spur gear 404 is fixedly disposed. On one side of the connecting cylinder 401, the protective box 405 is fixedly installed at one end of the connecting cylinder 401. The output end of the control hydraulic rod 402 moves upward, which further causes the rack 403 to move upward, thereby driving the spur gear 404 to rotate. When the output end of the hydraulic rod 402 reaches the full position, the spur gear 404 rotates ninety degrees, which further drives the protective box 405 to rotate ninety degrees through the connecting cylinder 401, which further causes the fabric rolling rod 407 to change from the original vertical state to the horizontal state. At this time, the fabric rolling rod 407 is horizontal on the truck.

[0035] Please see Figures 1 to 10 In one embodiment, the laying assembly 4 further includes a rotating rod 406, a fabric rolling rod 407, two mounting bases 408, two electric push rods 409, and two fixing plates 410. The rotating rod 406 is mounted on the inner wall of the protective box 405 via bearings. The fabric rolling rod 407 is connected to one end of the rotating rod 406 via a flange. The two mounting bases 408 are fixedly mounted on the inner wall of the fabric rolling rod 407. The two electric push rods 409 are respectively mounted on one side of the two mounting bases 408. The two fixing plates 410 are respectively fixedly mounted on the output ends of the two electric push rods 409. The tarpaulin is wrapped around the outer surface of the fabric rolling rod 407. By controlling the movement of the output ends of the two electric push rods 409, the two fixing plates 410 are moved, thereby fixing the tarpaulin to the outer surface of the fabric rolling rod 407. While the rotating rod 406 rotates, the output ends of the two electric push rods 409 are moved forward, further causing the two fixing plates 410 to loosen the clamping of the tarpaulin.

[0036] Please see Figures 1 to 10 In one embodiment, the support frame 103 is fixedly disposed on one side of the bracket 101, the lifting frame 102 is slidably disposed on the inner wall of the support frame 103, and the moving trolley 1 is installed at the bottom of the bracket 101. The moving trolley 1 can drive the bracket 101 to move to different positions.

[0037] Please see Figures 1 to 11 A control system for a truck tarpaulin deployment and retraction device is applied to the aforementioned device. The system further includes a control module, a sensor module, an execution module, and a remote control module. The control module includes a control box 603, which uses a PLC controller as the core control unit to receive signals from each module and issue control commands. The control box 603 is installed on one side of the bracket 101. The sensor module includes a lidar 601 and a height detector 602. The lidar 601 is used to collect the position and outline information of the truck and is installed on one side of the mobile trolley 1. The height detector 602 is used to detect the height of the fabric rolling rod 406 and is installed on one side of the protective box 405. The execution module includes a bidirectional motor 604, a stepper motor 605, a pinion 606, and a large gear 607. The bidirectional motor 604 is used to drive the lead screw 201 to rotate. The bidirectional motor 604 is installed on one side of the bracket 101, and the output shaft of the bidirectional motor 604 is fixedly set at one end of the lead screw 201. The stepper motor 605 is used to drive the fabric winding rod 407 to rotate. The stepper motor 605 is installed on one side of the inner wall of the protective box 405. The pinion 606 is fixedly set on the output shaft of the stepper motor 605. The pinion 606 meshes with the large gear 607, and the large gear 607 is fixedly sleeved on the outer surface of the fabric winding rod 407. The remote control module includes a wireless remote controller and a receiver unit; The autonomous driving module is integrated into the PLC controller in the control box 603. The autonomous driving module has the functions of path planning, obstacle avoidance, precise positioning, operation monitoring, and emergency braking. It generates the operation path, avoids fixed obstacles, and automatically slows down and detours or stops when encountering obstacles. After the manual roll of the tarpaulin onto the roll rod 407, the equipment automatically rises, autonomously walks to the truck to release the tarpaulin, and autonomously retreats to the designated position to wait for the roll of the second tarpaulin.

[0038] Furthermore, the receiving unit is located inside the control box 603 and adopts a 2.4GHz wireless communication protocol. The remote control module is signal-connected to the control module to realize remote control. The sensor module is electrically connected to the control module, and the control module is electrically connected to the execution module to form a control link.

[0039] A method for using a control system for a truck tarpaulin deployment and retraction device includes the following steps: S1. The operator starts the equipment via the remote control module, and the trolley 1 moves the equipment toward the truck. S2, PLC controller sends a forward rotation command to bidirectional motor 604 based on the truck height data collected by lidar 601. Bidirectional motor 604 drives lead screw 201 to rotate clockwise, and height detector 602 detects the height in real time. S3, PLC controller sends instructions to stepper motor 605, stepper motor 605 drives pinion 606 to rotate, pinion 606 meshes with large gear 607 to drive cloth rolling rod 407 to rotate slowly, control the moving trolley 1 to move slowly towards the truck to ensure that the tarpaulin covers the truck cargo box flat. S4. After the tarpaulin is laid, stepper motor 605 stops, and trolley 1 stops.

[0040] The working principle and usage process of this invention are as follows: When laying the tarpaulin, the tarpaulin is wrapped around the outer surface of the roll rod 407. The trolley 1 can move the bracket 101 to different positions. When it moves next to the truck, the laser radar 601 collects the truck's position and outline information. The second slider 204 can slide on the outer surface of the crossbar 203. The second slider 204 is connected to the first slider 202 via the connecting plate 205. Therefore, when the lead screw 201 rotates in different directions, the first slider 202 moves to different positions on the outer surface of the lead screw 201. The control box 603 controls the rotation of the bidirectional motor 604. The output shaft of the bidirectional motor 604 can rotate in both directions. At this time, the output shaft of the bidirectional motor 604 drives the lead screw 201 to rotate clockwise, further... The first slider 202 moves towards the lifting frame 102. The two transmission rods 206 can rotate around the connection between the two protruding plates 207 and the first slider 202 and second slider 204. As the first slider 202 and second slider 204 move towards the lifting frame 102, one end of each transmission rod 206 pushes the two protruding plates 207 upwards, further causing the support frame 103 to move upwards. When the support frame reaches its highest point, the power switch of the bidirectional motor 604 is turned off, and multiple rollers 301 can roll along the inner wall of the moving trolley 1. By turning on the external power switch of the stepper motor 306, the output shaft of the stepper motor 306 drives the synchronous rod 303 to rotate, allowing the output shaft of the stepper motor 306 to rotate in both directions. When the stepper motor 306 output shaft drives the synchronous rod 303 to rotate counterclockwise, the synchronous rod 303 further drives the two sprockets 304 to rotate counterclockwise. One end of the two chains 305 is connected to the support frame 103, and the other end is connected to the connecting frame 302. Thus, when the two sprockets 304 rotate in different directions, the connecting frame 302 is driven to rise or fall. The height of the protective box 405 can be detected by the height detector 602. When the protective box 405 is 20 to 30 centimeters higher than the truck, the stepper motor 306 is powered off. At this time, multiple rollers 301 roll on the inner wall of the lifting frame 102 to facilitate the movement of the connecting frame 302 and further adjust the height of the fabric rolling rod 407. At this time, the output end of the control hydraulic rod 402 moves upward. The rack 403 moves upward, causing the spur gear 404 to rotate. When the hydraulic rod 402 reaches its full position, the spur gear 404 rotates 90 degrees, further rotating the protective box 405 90 degrees via the connecting cylinder 401. This causes the fabric winding rod 407 to change from a vertical to a horizontal position, now lying horizontally across the truck. Turning on the external power switch of the stepper motor 605 causes its output shaft to rotate the pinion 606, which in turn causes the large gear 607 to rotate the rotating rod 406. The pinion 606 has a smaller diameter than the large gear 607, causing the rotating rod 406 to rotate slowly. The two mounting bases 408 support the two electric push rods 409.Two electric push rods 409 are mounted on the fabric rolling rod 407, and the tarpaulin is wrapped around the outer surface of the fabric rolling rod 407. By controlling the movement of the output ends of the two electric push rods 409, the two fixing plates 410 are moved, fixing the tarpaulin to the outer surface of the fabric rolling rod 407. Simultaneously, as the rotating rod 406 rotates, the output ends of the two electric push rods 409 are moved forward, further loosening the clamps on the tarpaulin. At the same time, the moving trolley 1 moves the bracket 101 forward, allowing the tarpaulin to be laid on the truck. As the lead screw 201 rotates clockwise, the first slider 202 moves towards the lifting frame 102. Simultaneously, the connecting plate 205 drives the second magnet 510 to move, and the push plate 508 can slide on the inner wall of the sealing box 507. The first magnet 509 and the second magnet 510 have magnetic force and are attracted together through the sealing box 507. At this time, the second magnet 510 drives the first magnet 509 to move, further causing the push plate 508 to move towards the lifting frame 102 inside the sealing box 507. This further compresses the gas inside the sealing box 507, forcing the gas through the two guide pipes 511 into the interior of the two cylinders 502. The two piston plates 503 can slide on the inner walls of the two cylinders 502 respectively. At this time, the two piston plates 503 move forward under the pressure of the gas, further causing the two support rods 504 to move. The two casters 505 move, causing the wheels on them to contact the ground. The two cylinders 502 form angles of 30 to 45 degrees with the sides of the bracket 101. At this time, the two cylinders 502 and the two support rods 504 together form a triangular support system with the sides of the bracket 101. This improves the stability of the bracket 101 when the lifting frame 102 is raised, counteracts the tilting moment caused by the upward shift of the center of gravity of the bracket 101, and prevents the bracket 101 from tipping over. After the tarpaulin is laid, the screw 201 will rotate counterclockwise under the drive of the bidirectional motor 604, causing the lifting frame 102 to return to its original position. At this time, the two piston plates 503 are not compressed by gas, and the elastic force generated by the two return springs 506 causes the two piston plates 503 to return to their original position, reducing the length of the two casters 505.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A truck tarpaulin deployment and retraction device, comprising a mobile trolley (1), a bracket (101), a lifting frame (102), and a support frame (103), characterized in that, The device also includes: A first adjustment component (2) for adjusting the height of the tarpaulin is disposed inside the bracket (101); Two support components (5) are used to support the bracket (101), and the two support components (5) are respectively disposed on both sides of the bracket (101); The lifting frame (102) is provided with a second adjustment component (3). The second adjustment component (3) includes multiple rollers (301) and a connecting frame (302). The multiple rollers (301) are divided into two groups. The two groups of rollers (301) are slidably disposed on both sides of the inner wall of the lifting frame (102). The two groups of rollers (301) are movably disposed on both sides of the connecting frame (302). A laying assembly (4) is provided on one side of the connecting frame (302). The laying assembly (4) includes a connecting cylinder (401), a hydraulic rod (402), a rack (403), a spur gear (404), and a protective box (405). The connecting cylinder (401) is set at the center of one side of the connecting frame (302) by a bearing. The hydraulic rod (402) is installed on the inner wall of the bottom of the lifting frame (102). The output end of the hydraulic rod (402) is fixedly set on one side of the rack (403). One side of the rack (403) meshes with the outer surface of the spur gear (404). The spur gear (404) is fixedly set on one side of the connecting cylinder (401). The protective box (405) is fixedly set on one end of the connecting cylinder (401). The laying assembly (4) also includes a rotating rod (406), a fabric rolling rod (407), two mounting bases (408), two electric push rods (409), and two fixing plates (410). The rotating rod (406) is mounted on the inner wall of the protective box (405) via bearings. The fabric rolling rod (407) is connected to one end of the rotating rod (406) via a flange. The two mounting bases (408) are fixedly mounted on the inner wall of the fabric rolling rod (407). The two electric push rods (409) are respectively mounted on one side of the two mounting bases (408). The two fixing plates (410) are respectively fixedly mounted on the output ends of the two electric push rods (409). The support frame (103) is fixedly disposed on one side of the bracket (101), the lifting frame (102) is slidably disposed on the inner wall of the support frame (103), and the moving trolley (1) is installed at the bottom of the bracket (101).

2. The truck tarpaulin deployment and retraction device according to claim 1, characterized in that: The first adjustment component (2) includes a lead screw (201), a first slider (202), a crossbar (203), and a second slider (204). The lead screw (201) is mounted on both sides of the inner wall of the bracket (101) via bearings. The first slider (202) is threaded onto the outer surface of the lead screw (201). The crossbar (203) is fixedly mounted on both sides of the inner wall of the bracket (101). The second slider (204) is movably mounted on the outer surface of the crossbar (203).

3. The truck tarpaulin deployment and retraction device according to claim 2, characterized in that: The first adjustment assembly (2) further includes a connecting plate (205), two transmission rods (206) and two protruding plates (207). The two sides of the connecting plate (205) are respectively fixedly disposed on the opposite sides of the first slider (202) and the second slider (204). One end of the two transmission rods (206) is respectively movably disposed on the inner wall of the first slider (202) and the second slider (204), and the other end of the two transmission rods (206) is respectively movably disposed on the inner wall of the two protruding plates (207). The opposite sides of the two protruding plates (207) are disposed on both sides of the support frame (103) by screws.

4. The truck tarpaulin deployment and retraction device according to claim 3, characterized in that: Both of the support components (5) include a connecting seat (501), a cylinder (502), a piston plate (503), a support rod (504), and a caster wheel (505). The connecting seat (501) is screwed to one side of the bracket (101). One side of the connecting seat (501) is fixedly disposed on the outer surface of the cylinder (502). The piston plate (503) is in close contact with the inner wall of the cylinder (502). The support rod (504) is fixedly disposed on one side of the piston plate (503). The caster wheel (505) is installed on one end of the support rod (504). A return spring (506) is fixedly disposed on one side of the piston plate (503). One end of the return spring (506) is fixedly disposed on one side of the inner wall of the cylinder (502).

5. The truck tarpaulin deployment and retraction device according to claim 1, characterized in that: The support assembly (5) further includes a sealing box (507), a push plate (508), a first magnet (509), a second magnet (510), and a guide pipe (511). The sealing box (507) is fixedly disposed on the inner wall of the bracket (101). The push plate (508) is movably embedded in the inner wall of the sealing box (507). The push plate (508) is fixedly disposed on one side of the first magnet (509). One side of the second magnet (510) is fixedly disposed on one side of the connecting plate (205). The two ends of the guide pipe (511) are respectively connected to the sealing box (507) and the cylinder (502) for introducing the gas in the sealing box (507) into the cylinder (502).

6. The truck tarpaulin deployment and retraction device according to claim 1, characterized in that: The second adjustment component (3) also includes a synchronizing rod (303), two chains (304), two chains (305) and a stepper motor (306). The two ends of the synchronizing rod (303) are rotatably connected to the inner walls on both sides of the lifting frame (102). The two chains (304) are fixedly sleeved on the outer surface of the synchronizing rod (303). The two chains (304) are both drivenly connected to the inner walls of the two chains (304). One end of each of the two chains (305) is fixedly connected to the top of the connecting frame (302).

7. The truck tarpaulin deployment and retraction device according to claim 6, characterized in that: The other ends of both chains (305) are fixedly connected to the support frame (103). The stepper motor (306) is installed on one side of the lifting frame (102). The output shaft of the stepper motor (306) is connected to one end of the synchronizing rod (303).

8. The truck tarpaulin deployment and retraction device according to claim 5, characterized in that: The second magnet (510) can magnetically attract the first magnet (509) inside the sealed box (507).

9. A control system for a truck tarpaulin deployment and retraction device, characterized in that: The system includes a truck tarpaulin deployment and retraction device as described in any one of claims 1-8, and further includes a control module, a sensor module, an execution module, a remote control module, and an automatic driving module; The control module includes a control box (603), which uses a PLC controller as the core control unit to receive signals from each module and issue control commands. The control box (603) is installed on one side of the bracket (101). The sensor module includes a lidar (601) and a height detector (602). The lidar (601) is used to collect the position and outline information of the truck. The lidar (601) is installed on one side of the mobile trolley (1). The height detector (602) is used to detect the height of the fabric rolling rod (406). The height detector (602) is installed on one side of the protective box (405). The execution module includes a bidirectional motor (604), a stepper motor (605), a pinion (606), and a large gear (607). The bidirectional motor (604) is used to drive the lead screw (201) to rotate. The bidirectional motor (604) is installed on one side of the bracket (101), and the output shaft of the bidirectional motor (604) is fixedly set on one end of the lead screw (201). The stepper motor (605) is used to drive the fabric winding rod (407) to rotate. The stepper motor (605) is installed on one side of the inner wall of the protective box (405). The pinion (606) is fixedly set on the output shaft of the stepper motor (605). The pinion (606) meshes with the large gear (607), and the large gear (607) is fixedly sleeved on the outer surface of the fabric winding rod (407). The remote control module includes a wireless remote controller and a receiving unit; The automatic driving module is integrated into the PLC controller of the control box (603). The automatic driving module has path planning, obstacle avoidance, precise positioning, operation monitoring and emergency braking functions. After the manual roll of the tarpaulin onto the roll rod (407), the equipment automatically rises, autonomously walks to the side of the truck to release the tarpaulin, and autonomously retreats to the designated position to wait for the roll of the second tarpaulin.

10. The control system for the truck tarpaulin deployment and retraction device according to claim 9, characterized in that: The receiving unit is located inside the control box (603) and adopts a 2.4GHz wireless communication protocol. The remote control module is signal-connected to the control module to realize remote control. The sensor module is electrically connected to the control module, and the control module is electrically connected to the execution module to form a control link.

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