A transport tarpaulin structure

Abstract

This utility model relates to a tarpaulin structure for transportation, characterized by comprising a tarpaulin body with multiple spaced-apart loops, mounting seats on the front and rear sides of the tarpaulin body fixed to the outer wall of the vehicle compartment, and multiple spaced-apart movable seats on one side of each mounting seat, the movable seats being movable horizontally. Both the movable seats and the mounting seats are connected to the tarpaulin body, and a driving device is provided between the mounting seats and the movable seats to simultaneously drive each movable seat to move, thereby causing the tarpaulin body to retract. This utility model has the following advantages and effects: it enables rapid deployment of the tarpaulin.

Description

Technical Field

[0001] This utility model relates to the field of tarpaulin technology, specifically to a tarpaulin structure for transportation. Background Technology

[0002] Tarpaulin (or waterproof fabric) is a high-strength, flexible, and waterproof material, often used as canvas. In transportation operations, tarpaulins are used to cover the top of the cargo compartment of transport vehicles to provide dust and water protection.

[0003] For example, Chinese patent document CN221113678U discloses a vehicle tarpaulin covering device for asphalt transportation, including a truck bed. A receiving plate is fixedly installed on the left side of the truck bed, and a strip electromagnet is embedded above the receiving plate. A receiving block is fixedly installed above the receiving plate, and a guide rail is fixedly installed on the rear side of the receiving block. By controlling the energizing direction of the strip electromagnet coil, the magnetic poles of the strip electromagnet are opposite to those of the permanent magnet. When the strip electromagnet is activated, because the magnetic poles of the strip electromagnet are opposite to those of the permanent magnet, the permanent magnet will be subjected to an upward repulsive force, thereby preventing the lower end of the guide block from contacting the receiving plate. In this way, friction is avoided between the guide block and the receiving plate when opening and closing the first-stage tarpaulin, thus preventing wear on the bottom surface of the guide block.

[0004] In the above technical solution, the chain is driven by a motor to rotate, which in turn moves the support rods directly connected to the chain that support the tarpaulin along the chain direction, thereby moving the other support rods. This allows the tarpaulin to retract and be automatically laid. However, this driving method has a certain response time. That is, the support rods directly connected to the chain need to be driven to travel a certain distance until they contact the adjacent support rods before the other support rods can be moved. Therefore, the efficiency of laying the tarpaulin is somewhat limited. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tarpaulin structure for transportation that enables the rapid laying of tarpaulins.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transport tarpaulin structure, comprising a tarpaulin body, wherein the tarpaulin body is provided with a plurality of spaced-apart cable loops, and mounting seats are respectively provided on the front and rear sides of the tarpaulin body. The mounting seats are fixed to the outer wall of the vehicle compartment, and a plurality of spaced-apart movable seats are provided on one side of the mounting seats. The movable seats can move along... The tarpaulin can move horizontally. Both the movable seat and the mounting seat are connected to the tarpaulin body. A driving device is provided between the mounting seat and the movable seat. The driving device is used to drive each movable seat to move simultaneously, so as to cause the tarpaulin body to retract.

[0007] The present invention is further configured such that: the driving device includes a first connecting arm and a second connecting arm; the outer wall of the mounting base is provided with a vertically arranged rotatable lead screw; a connecting block that can form a threaded engagement with the lead screw is fixedly fitted around the outer periphery of the lead screw; the first connecting arm and the second connecting arm are cross-connected and hinged at their centers; one end of the first connecting arm is rotatably connected to the connecting block and the other end is rotatably connected to an adjacent movable seat; one end of the second connecting arm is rotatably connected to the mounting base and the other end is rotatably connected to an adjacent movable seat; a transmission unit is provided between the movable seats, and adjacent movable seats are connected through the transmission unit.

[0008] The present invention is further configured such that: the movable seat is provided with a through clearance hole, a movable connecting rod is coupled in the clearance hole, the movable connecting rod can slide along the direction of the clearance hole, a fixed connecting rod is fixed on the movable seat, one end of the first connecting arm is fitted onto the outer periphery of the fixed connecting rod, and one end of the second connecting arm is fitted onto the outer periphery of the movable connecting rod.

[0009] The present invention is further configured such that: the transmission unit includes two cross-arranged first transmission arms and second transmission arms, one end of the first transmission arm is fitted onto a fixed connecting rod and the other end is fitted onto a movable connecting rod, and one end of the second transmission arm is fitted onto a movable connecting rod and the other end is fitted onto a fixed connecting rod.

[0010] The present invention is further configured to include a guide rod, which is horizontally arranged, and a guide hole is provided at the bottom end of the movable seat, and the movable seat is fitted onto the outer periphery of the guide rod through the guide hole.

[0011] The present invention is further configured such that: the top of both the mounting base and the movable base is provided with a connecting post, and the connecting post is provided with a through hole for the rope to pass through.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Because a drive device is provided between the mounting base and the movable base, the drive device includes a first connecting arm and a second connecting arm, and adjacent movable bases are linked through a transmission unit, when the tarpaulin body needs to be unfolded or retracted, the linkage of the first and second connecting arms can synchronously drive each movable base to slide horizontally, realizing the rapid unfolding and retraction of the tarpaulin body, thereby improving the efficiency of unfolding or retracting the tarpaulin body. Therefore, it effectively solves the technical problem in the prior art that there is a certain response time when unfolding or retracting the tarpaulin body, which leads to a certain limitation in the efficiency of unfolding or retracting the tarpaulin body. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model; Figure 2 is a structural schematic diagram of the present invention when connected to the vehicle compartment; Figure 3 is a partially enlarged structural diagram of part A of this utility model. Detailed Implementation

[0014] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0015] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] As shown in Figures 1 to 3, this utility model discloses a tarpaulin structure for transportation, including a tarpaulin body 1. Mounting seats 3 are respectively provided on the front and rear sides of the tarpaulin body 1, and the mounting seats 3 are fixed to the outer wall of the vehicle compartment by bolts or welding. Multiple spaced movable seats 4 are arranged on the same side as the mounting seats 3, and the movable seats 4 can move horizontally. In addition, multiple cable loops 2 are evenly distributed on the surface of the tarpaulin body 1 for threading ropes to stably connect the tarpaulin body 1 to the mounting seats 3 and the movable seats 4 respectively. A driving device is provided between the mounting seats 3 and the movable seats 4, which simultaneously drives each movable seat 4 to move, thereby causing the tarpaulin body 1 to unfold or retract.

[0017] In this embodiment, the specific structure of the drive device includes a lead screw 53 vertically mounted on the outside of the mounting base 3. The lead screw 53 is rotatably connected to the mounting base 3 via bearings and is driven to rotate by a manual crank. A connecting block 54 is threaded onto the outer periphery of the lead screw 53. When the lead screw 53 rotates, the connecting block 54 moves up and down along the lead screw 53. The drive device also includes a first connecting arm 51 and a second connecting arm 52 that are cross-hinged. The centers of the first connecting arm 51 and the second connecting arm 52 form an "X" shape structure through a hinge axis. The upper end of the first connecting arm 51 is fitted onto the outer periphery of the fixed connecting rod 6 provided on the movable base 4 and hinged, while the lower end is hinged to the connecting block 54. The upper end of the second connecting arm 52 is hinged to the mounting base 3, while the lower end is fitted onto the outer periphery of the movable connecting rod 5 of the adjacent movable base 4 and hinged. When the lead screw 53 rotates, causing the connecting block 54 to rise or fall, the crossing angle between the first connecting arm 51 and the second connecting arm 52 changes accordingly, pushing the movable seat 4 adjacent to the mounting base 3 to slide horizontally. Furthermore, a transmission unit is installed between adjacent movable seats 4 to achieve linkage between them, thereby driving all movable seats 4 to slide horizontally simultaneously. Specifically, the transmission unit consists of a first transmission arm 551 and a second transmission arm 552 arranged in a cross configuration. One end of the first transmission arm 551 is sleeved on the fixed connecting rod 6 of the current movable seat 4, and the other end is sleeved on the movable connecting rod 5 of the adjacent movable seat 4. The second transmission arms 552 are connected in opposite directions, forming a symmetrical linkage structure. When the first movable seat 4 is driven to move, the transmission unit transmits power sequentially to the subsequent movable seats 4 through the pushing and pulling action of the cross-arranged first connecting arm 51 and second connecting arm 52, ensuring that all movable seats 4 move synchronously. In addition, both the mounting base 3 and the movable base 4 are equipped with vertical connecting posts 8 at their tops. The connecting posts 8 have through holes 81 for ropes to pass through to secure the edges of the tarpaulin body 1. The tarpaulin body 1 folds and contracts when the movable base 4 moves toward the mounting base 3, and is stretched flat to cover the vehicle compartment opening when it moves outward.

[0018] Furthermore, to ensure the stability of the movable seat 4 during sliding, a guide hole 42 is provided at the bottom of the movable seat 4, and a guide rod 7 is installed on the outer wall of the vehicle compartment. The movable seat 4 is fitted onto the horizontally set guide rod 7 through the guide hole 42, allowing the movable seat 4 to slide smoothly along the direction of the guide rod 7. A through clearance hole 41 is also provided on the movable seat 4, allowing one side of the movable connecting rod 5 to couple with the clearance hole 41. Thus, when the first transmission arm 551 and the second transmission arm 552 are subjected to pushing and pulling forces, and the cross angle between them changes accordingly, the clearance hole 41 prevents interference with the movement of the movable connecting rod 5, ensuring the normal unfolding or retraction of the tarpaulin body 1. Furthermore, when the movable connecting rod 5 moves with the change of cross angle, the coupling with the clearance hole 41 guides the movement of the movable connecting rod 5, ensuring that the movable connecting rods 5 connected to each transmission unit can move stably and synchronously, thereby ensuring more uniform unfolding or retraction of the tarpaulin body 1.

[0019] In actual operation, rotating the manual crank drives the lead screw 53 to rotate, causing the connecting block 54 to move up and down. Through the coordinated pushing and pulling action of the first connecting arm 51 and the second connecting arm 52, which are arranged in a cross configuration, the moving seat 4 slides horizontally along the guide rod 7. The symmetrical design of the transmission unit ensures consistent displacement of the multiple moving seats 4, preventing uneven force on the tarpaulin. The guide rod 7 engages with the guide hole 42 at the bottom of the moving seat 4, further ensuring the stability of the movement trajectory and preventing deviation or jamming. This structure, through mechanical linkage, enables rapid unfolding and retraction of the tarpaulin body 1, improving efficiency when the tarpaulin body 1 is expanded or contracted.

[0020] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A tarpaulin structure for transportation, characterized in that, The device includes a tarpaulin body with multiple spaced loops. Mounting seats are provided on the front and rear sides of the tarpaulin body, and the mounting seats are fixed to the outer wall of the vehicle compartment. Multiple spaced movable seats are provided on one side of the mounting seats, and the movable seats can move horizontally. Both the movable seats and the mounting seats are connected to the tarpaulin body. A driving device is provided between the mounting seats and the movable seats. The driving device is used to drive each movable seat to move simultaneously, so as to cause the tarpaulin body to retract. The driving device includes a first connecting arm and a second connecting arm. The outer wall of the mounting base is provided with a vertically arranged rotatable lead screw. A connecting block that can form a threaded engagement with the lead screw is fixedly fitted around the outer periphery of the lead screw. The first connecting arm and the second connecting arm are cross-connected and hinged to each other at their centers. One end of the first connecting arm is rotatably connected to the connecting block and the other end is rotatably connected to an adjacent movable seat. One end of the second connecting arm is rotatably connected to the mounting base and the other end is rotatably connected to an adjacent movable seat. A transmission unit is provided between the movable seats, and adjacent movable seats are connected through the transmission unit.

2. The tarpaulin structure for transportation according to claim 1, characterized in that, The movable seat is provided with a through clearance hole, and a movable connecting rod is coupled in the clearance hole. The movable connecting rod can slide along the direction of the clearance hole. A fixed connecting rod is fixed on the movable seat. One end of the first connecting arm is fitted onto the outer periphery of the fixed connecting rod, and one end of the second connecting arm is fitted onto the outer periphery of the movable connecting rod.

3. The tarpaulin structure for transportation according to claim 2, characterized in that, The transmission unit includes two cross-arranged first transmission arms and second transmission arms. One end of the first transmission arm is fitted onto a fixed connecting rod, and the other end is fitted onto a movable connecting rod. One end of the second transmission arm is fitted onto a movable connecting rod, and the other end is fitted onto a fixed connecting rod.

4. The tarpaulin structure for transportation according to claim 1, characterized in that, It also includes a guide rod, which is horizontally arranged, and the bottom end of the movable seat is provided with a guide hole, through which the movable seat is fitted onto the outer periphery of the guide rod.

5. The tarpaulin structure for transportation according to claim 1, characterized in that, Both the mounting base and the movable base are provided with connecting posts at their tops, and the connecting posts are provided with through holes for ropes to pass through.

Images