Semitrailer tarpaulin folding and unfolding device

Abstract

The utility model relates to the technical field of tent cloth winding, in particular to a semitrailer tent cloth winding and unwinding device which comprises two sets of bearing assemblies and a supporting assembly, the bearing assemblies are symmetrically arranged, each bearing assembly comprises a bottom plate, side plates, moving assemblies, a rotating disc and a first spline, the moving assemblies are arranged at the four corners of the lower portion of each bottom plate, and the rotating discs are arranged on the side plates. The semi-trailer tarpaulin folding and unfolding device is characterized in that the base plate is further provided with side plates, the side plates are further provided with rotating discs, the sides, close to each other, of the two rotating discs are provided with the first splines, and the forward and reverse tooth screw rod is in threaded connection with the sleeve to be matched with the first key groove in the sleeve and the first splines on the rotating discs; and therefore, the sleeve can accurately move along with the rotation of the turntable. The two symmetrically-arranged bearing assemblies can evenly apply acting force to the tent cloth from the two sides, deviation and jamming of the tent cloth in the folding and unfolding process are effectively avoided, it is guaranteed that folding and unfolding actions are accurate and efficient, and the semi-trailer tent cloth folding and unfolding device is suitable for semi-trailer tent cloth of different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to tent cloth winding technical field, concretely is a semi -trailer tent cloth winding device. BACKGROUND

[0002] Semi -trailer tent cloth is the key material of semi -trailer goods protection, and has durable, waterproof, sunscreen and multiple key characteristics;

[0003] When using or winding tent cloth, large area tent cloth is inconvenient to operate, and if multiple people operate, it is time -consuming and labor -intensive, and the limitation is higher. UTILITY MODEL CONTENTS

[0004] (I) the technical problem solved

[0005] In view of the deficiencies of prior art, the utility model provides a semi -trailer tent cloth winding device.

[0006] (II) technical scheme

[0007] To achieve the above object, the utility model provides the following technical scheme: a semi -trailer tent cloth winding device, including bearing assembly and support assembly, bearing assembly is set up as two groups of symmetrical arrangement, bearing assembly includes bottom plate, side plate, moving assembly, carousel and first spline, the moving assembly is set up in the bottom plate lower four corners, the bottom plate still is provided with side plate, the carousel is still set up on the side plate, and the first spline is set up on the side of two group carousels close to each other, the support assembly includes positive and negative tooth screw rod and sleeve pipe, the sleeve pipe is set up as two groups of symmetrical arrangement, the sleeve pipe is connected in screw thread with positive and negative tooth screw rod, and the first key groove that is compatible with first spline is still set up on the sleeve pipe.

[0008] In order to facilitate the movement and fixed equipment, the utility model improves, moving assembly includes universal wheel and brake, and the universal wheel is arranged at the bottom plate lower four corners, and the brake is arranged at the universal wheel periphery.

[0009] Preferably, the back side of the side plate is further provided with a handrail.

[0010] Preferably, the handrail is provided with a friction sleeve.

[0011] In order to facilitate the drive carousel, the utility model improves, and the second key groove is further arranged on the carousel protruding from the side plate, the handle is further arranged away from the support assembly on the carousel, and the second spline is inserted into the second key groove on the handle.

[0012] In order to facilitate the equipment stable support, the utility model improves, and the support block is further arranged on the side plate away from the support assembly one end two sides, and the support block is flush with the bottom plate away from the support assembly one end.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the utility model provides a half trailer tarpaulin folding and unfolding device, has the following beneficial effects:

[0015] The half trailer tarpaulin folding and unfolding device, the thread connection of positive and negative tooth screw rod and sleeve, cooperate first key groove on sleeve and first spline on rotary disc, make sleeve can accurately move along with rotary disc rotation. Two groups of symmetrical bearing assemblies can uniformly apply force to the tarpaulin from both sides, effectively avoid the tarpaulin from deviating and jamming during folding and unfolding, ensure accurate and efficient folding and unfolding action, and adapt to tarpaulins of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the main view schematic diagram of the utility model structure;

[0017] Figure 2 It is the bearing assembly schematic diagram of the utility model structure;

[0018] Figure 3 It is the support assembly schematic diagram of the utility model structure;

[0019] Figure 4 It is the main view schematic diagram of the utility model structure Figure 1 It is the partial enlarged schematic diagram.

[0020] In the drawing: 1, bottom plate;2, side plate;3, rotary disc;4, first spline;5, positive and negative tooth screw rod;6, sleeve;7, universal wheel;8, brake;9, handrail;10, friction sleeve;11, handle;12, second spline;13, support block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4A semi-trailer tarpaulin retraction device includes a load-bearing component and a support component. The load-bearing component is arranged in two symmetrical sets. The load-bearing component includes a base plate 1, side plates 2, a moving component, a turntable 3, and a first spline 4. The moving component is arranged at the four corners below the base plate 1. The side plates 2 are also arranged on the base plate 1. The turntable 3 is also arranged on the side plates 2. The first spline 4 is arranged on one side of the two sets of turntables 3 that are close to each other. The support component includes a threaded rod 5 and a sleeve 6. The sleeve 6 is arranged in two symmetrical sets. The sleeve 6 is threadedly connected to the threaded rod 5. The sleeve 6 is also provided with a first keyway that matches the first spline 4.

[0023] Two sets of load-bearing components stand upright on the ground via movable components (casters 7 and brakes 8) below the base plate 1. Side plates 2 are vertically mounted on the base plate 1, and turntables 3 are installed in appropriate positions on the side plates 2. The first splines 4 on opposite sides of the two sets of turntables 3 are ready for docking. The positive and negative threaded rods 5 of the support components are located in the middle, and two sets of sleeves 6 are threaded to the positive and negative threaded rods 5 from both sides, with the first keyway on the sleeves 6 aligned with the first spline 4 of the turntable 3, completing the initial assembly and allowing the entire device to form a cooperating whole.

[0024] Use the casters 7 to push the device to a suitable position next to the semi-trailer, and then press the brake 8 to secure it. The operator holds the handle 9, confirms that the device is placed stably, and prepares to unfold and retract the tent fabric.

[0025] The operator inserts the second spline 12 on the handle 11 into the protruding second keyway of the turntable 3 to establish a stable connection. Holding the handle 9 to stabilize the device, the operator rotates the handle 11 with the other hand, causing the turntable 3 to rotate accordingly. Because the turntable 3 and the sleeve 6 are tightly fitted through the first spline 4 and the first keyway, the rotational force of the turntable 3 is transmitted to the sleeve 6, causing the sleeve 6 to rotate synchronously with the turntable 3.

[0026] The sleeve 6 and the threaded rod 5 are connected by threads. Based on the characteristics of the threaded rod 5, when the sleeve 6 rotates, the two sets of symmetrically arranged sleeves 6 will move in a straight line towards or in the opposite direction along the threaded rod 5. For example, rotating the turntable 3 clockwise will cause the sleeve 6 to move towards the tent fabric; rotating it counterclockwise will do the opposite.

[0027] To unfold the tent fabric, turn handle 11 in the opposite direction. The sleeve 6 moves away from the direction of the tent fabric, loosening one end of the tent fabric connected to the sleeve 6. As the sleeve 6 continues to move backward, the tent fabric gradually unfolds, covering the semi-trailer cargo box. The load-bearing components on both sides move synchronously, pulling the tent fabric evenly from both sides. The tent fabric is smoothly laid out in the predetermined direction, relying on precise force transmission to avoid local accumulation or twisting.

[0028] When it is needed to roll up, the handle 11 is rotated forward, the sleeve 6 moves towards the tent cloth, and the tent cloth is gradually pulled in. The two sleeves 6 are synchronously contracted, and the pulling force is uniformly applied from both sides to the middle, so that the tent cloth is neatly rolled up little by little. The cooperation among the forward and reverse screw rod 5, the sleeve 6 and the rotating disc 3 is relied on throughout the process, so that the tent cloth is accurately controlled to be rolled up and down, and the operation is flexibly completed according to the size of the semitrailer carriage;

[0029] During the rolling up and down process, the support blocks 13 on both sides of the side plate 2 far away from the end of the support assembly are in contact with the ground, and the ground together with the bottom plate 1 shares the pulling force of the tent cloth, so that the device is prevented from being unbalanced and falling due to the large area and heavy weight of the tent cloth, and the whole rolling up and down operation is safely and stably continued;

[0030] The friction sleeve 10 on the handrail 9 increases the friction force of the hand, so that the handrail 9 is more stably held to apply force and use force. When the device is moved, the universal wheel 7 is convenient to push, the brake 8 is locked after reaching the position, the position is maintained stable during the operation, and the rolling up and down operation is assisted in all directions.

[0031] In this document, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between the other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0032] Unless otherwise defined, the meaning of the technical terms used in this document is the same as that generally understood by those skilled in the art to which the application belongs; the use of related terms in this document is only for the purpose of describing specific embodiments, and is not intended to limit the application.

[0033] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application.

Claims

1. A tarpaulin stowing device for a semi-trailer comprising a load bearing assembly and a support assembly, characterised in that: The bearing assembly is arranged in two symmetrical groups, comprising a bottom plate (1), a side plate (2), a moving assembly, a rotating disc (3) and a first spline (4), the moving assembly is arranged at the four corners below the bottom plate (1), the side plate (2) is further arranged on the bottom plate (1), the rotating disc (3) is further arranged on the side plate (2), the first spline (4) is arranged on the side close to the two rotating discs (3), the supporting assembly comprises a positive and reverse tooth screw (5) and a sleeve (6), the sleeve (6) is arranged in two symmetrical groups, the sleeve (6) is threadedly connected with the positive and reverse tooth screw (5), the sleeve (6) is further provided with a first key groove matched with the first spline (4).

2. A tarpaulin retraction device for a semitrailer according to claim 1, characterized in that: The moving assembly comprises a universal wheel (7) and a brake (8), the universal wheel (7) is arranged at the four corners below the bottom plate (1), and the brake (8) is arranged on the side of the universal wheel (7).

3. A tarpaulin retraction device for a semitrailer according to claim 2, characterized in that: The back side of the side plate (2) is further provided with a handrail (9).

4. A device for stowing and unstowing a tarpaulin on a semitrailer according to claim 3, characterized in that: The handrail (9) is provided with a friction sleeve (10).

5. A device for stowing and unstowing a tarpaulin on a semitrailer according to claim 4, characterized in that: The rotating disc (3) protruding from the side plate (2) is further provided with a second key groove, the rotating disc (3) is further provided with a handle (11) away from the supporting assembly, and the handle (11) is provided with a second spline (12) inserted into the second key groove.

6. A trailer tarp retraction device as claimed in claim 5, wherein: The side plate (2) is further provided with a supporting block (13) away from the supporting assembly at the two sides of one end, and the supporting block (13) is flush with the bottom plate (1) away from the supporting assembly.

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