A fastening device for heavy-duty dump trucks

Abstract

This utility model discloses a fastening device for heavy-duty dump trucks, belonging to the field of heavy-duty truck technology. It includes a cargo box and a top plate. The cargo box is a hollow cuboid shape, open at the top and rear. A top plate is located above the interior of the open rear end of the cargo box, with symmetrical fixing frames at the lower end of the top plate. A fixing block is located at the upper outer side of the open rear end of the cargo box. This utility model solves the problem of loosening of the fastening device during movement due to vibrations generated during dump truck transportation. This utility model cleans the fixing groove by closing the sealing plate, gathering material at the top corners of the closed cargo box. A telescopic sealing block prevents interference with the sealing plate's closure. Then, rotating the worm gear lowers the limiting plate into the fixing groove, thus fastening the sealing plate. Because the worm gear is self-locking, it prevents the device from opening during transportation.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty truck technology, specifically a fastening device for heavy-duty dump trucks. Background Technology

[0002] Dump trucks are vehicles that unload goods themselves using hydraulic or mechanical lifting. Also known as tipper trucks, they consist of a chassis, hydraulic lifting mechanism, cargo box, and power take-off unit. When using dump trucks, fastening devices are needed to secure the rear door to prevent it from opening during transport. However, general fastening devices have some drawbacks, such as:

[0003] When a dump truck is in use, the vibrations it generates during transportation can cause the fastening device to loosen, leading to the dump truck opening, loss of materials, and ultimately hindering its operation. Utility Model Content

[0004] The purpose of this invention is to provide a fastening device for heavy-duty dump trucks that can automatically lock during movement, thus solving the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a cargo box and a top plate, the cargo box being a hollow cuboid shape, with the upper end and rear side of the cargo box open, a top plate being provided inside the upper part of the open rear end of the cargo box, a fixing frame being symmetrically provided at the lower end of the top plate, a fixing block being provided at the upper part of the outer side of the open rear end of the cargo box, a fixing shaft being rotatably provided inside the fixing block, a closing plate being connected to the inner side of the fixing shaft, and a fastening mechanism being provided inside the closing plate.

[0006] Preferably, the fastening mechanism includes a worm gear, a turbine, a second lead screw, and a limiting plate. The worm gear is rotatably arranged inside the closed plate, and the turbine is connected to the side of the worm gear. The turbine is rotatably arranged inside the closed plate, and the second lead screw is arranged on the side of the turbine. The limiting plate is threadedly connected to the outer side of the second lead screw, and the limiting plate is slidably arranged inside the closed plate.

[0007] Preferably, a bottom plate is provided at the lower outer side of the open rear end of the cargo box, and a fixing groove is provided at the center of the bottom plate, with a limiting plate embedded inside the fixing groove.

[0008] Preferably, the bottom of the sealing plate near the cargo box is sloped, and sealing blocks are slidably and extendably installed at both ends of the slope. A spring is preset inside the sealing plate to push the sealing blocks to move outward.

[0009] Preferably, the sealing plate has a first sealing strip vertically installed at both ends on the side of the box near the cargo box, and a second sealing strip is pre-installed on the outer side of the fixing frame.

[0010] Preferably, the inner side of the first sealing strip is hollow, and the first sealing strip is elastic.

[0011] Preferably, a motor is installed inside the lower part of the fixing frame, the output end of the motor is connected to a first lead screw, and a fixing bolt is threaded to the outer side of the first lead screw. The fixing bolt is slidably disposed inside the fixing frame.

[0012] Preferably, the fixing bolt is connected to a guide frame on its side, and arc-shaped guide blocks are provided on both sides of the guide frame. The guide blocks are slidably disposed inside the first sealing strip.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention cleans the fixed groove by closing the sealing plate, gathers the material at the top corners of the closed box, and avoids affecting the sealing of the sealing plate by using a telescopic sealing block. Then, by rotating the worm gear, the limiting plate is driven to descend and embed into the fixed groove, thereby securing the sealing plate. Since the worm gear is self-locking, it can prevent the equipment from opening during transportation. Afterwards, the guide block is used to drive the first sealing strip and the second sealing strip to engage, thereby sealing the sealing plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 A three-dimensional structural diagram of the enclosure panel and floor installation of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the fixing frame of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the guide frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the closed plate of this utility model.

[0020] In the diagram: 1. Cargo box; 2. Fixing frame; 21. Motor; 22. Fixing bolt; 23. Guide frame; 24. Guide block; 25. First lead screw; 3. Top plate; 4. Fixing block; 5. Sealing plate; 51. Fixing shaft; 52. First sealing strip; 53. Sealing block; 54. Worm gear; 55. Turbine; 56. Second lead screw; 57. Limiting plate; 6. Bottom plate; 61. Fixing groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0023] Combination Figures 1-5 This utility model discloses a fastening device for a heavy-duty dump truck, comprising a cargo box 1 and a top plate 3. The cargo box 1 is a hollow cuboid shape, with its upper end and rear side open. The top plate 3 is installed inside the upper part of the open rear end of the cargo box 1. Fixing frames 2 are symmetrically arranged at the lower end of the top plate 3. A fixing block 4 is installed at the upper outer side of the open rear end of the cargo box 1. A fixing shaft 51 is rotatably installed inside the fixing block 4. A closing plate 5 is connected to the inner side of the fixing shaft 51. A fastening mechanism is installed inside the closing plate 5.

[0024] It should be noted that the top plate 3 can prevent the goods from overflowing, and at the same time, it can protect the fixing block 4 and the closing plate 5, preventing the goods from affecting the rotation of the fixing block 4 and the closing plate 5. The fixing shaft 51 can reduce the friction between the fixing block 4 and the closing plate 5, making it easier for the closing plate 5 to open and close.

[0025] In this embodiment, the fastening mechanism includes a worm 54, a turbine 55, a second lead screw 56, and a limiting plate 57. The worm 54 is rotatably arranged inside the closed plate 5, and the turbine 55 is connected to the side of the worm 54. The turbine 55 is rotatably arranged inside the closed plate 5. The second lead screw 56 is arranged on the side of the turbine 55, and the limiting plate 57 is threadedly connected to the outer side of the second lead screw 56. The limiting plate 57 is slidably arranged inside the closed plate 5.

[0026] It should be noted that when the closing plate 5 closes the cargo box 1, the worm gear 54 will drive the turbine 55 and the second lead screw 56 to rotate. Since the second lead screw 56 and the limiting plate 57 are threadedly connected, and the closing plate 5 will limit the limiting plate 57, the limiting plate 57 will move up and down when the second lead screw 56 rotates, thereby adjusting the height of the limiting plate 57.

[0027] In this embodiment, a bottom plate 6 is provided at the lower outer side of the open rear end of the cargo box 1, and a fixing groove 61 is provided at the center of the bottom plate 6. The limiting plate 57 is embedded in the fixing groove 61.

[0028] It should be noted that when the limiting plate 57 moves downward, it will move downward and embed itself into the fixing groove 61, thereby effectively limiting the limiting plate 57 and preventing the closing plate 5 from rotating.

[0029] In this embodiment, the bottom of the sealing plate 5 near the cargo box 1 is inclined, and sealing blocks 53 are slidably extended at both ends of the inclined plate. A spring is preset inside the sealing plate 5 to push the sealing blocks 53 to move outward.

[0030] It should be noted that when the sealing plate 5 is closed, the bottom of the sealing plate 5 is inclined, which will push the material to move to both sides to avoid excessive friction in other parts. At the same time, when there is material left at the top corners on both sides of the sealing plate 5, the sealing block 53 will shrink. Thus, when there is material left in the cargo box 1, the material will be guided to the top corner by the sealing plate 5. Then, the deformation of the sealing block 53 will not affect the closing of the sealing plate 5.

[0031] In this embodiment, the sealing plate 5 has a first sealing strip 52 vertically arranged at both ends on the side of the box 1, and the fixing frame 2 has a second sealing strip pre-set on the outside.

[0032] In this embodiment, the inner side of the first sealing strip 52 is hollow, and the first sealing strip 52 is elastic.

[0033] It should be noted that when the sealing plate 5 is closed, the sealing performance of the sealing plate 5 is further improved by the connection of the first sealing strip 52 and the second sealing strip, preventing materials from flowing out from the gap. The first sealing strip 52 and the second sealing strip are elastic, which can also prevent materials from affecting the closing of the sealing plate 5.

[0034] In this embodiment, a motor 21 is provided inside the lower part of the fixing frame 2. The output end of the motor 21 is connected to a first lead screw 25. A fixing bolt 22 is threadedly connected to the outer side of the first lead screw 25. The fixing bolt 22 is slidably disposed inside the fixing frame 2.

[0035] In this embodiment, a guide frame 23 is connected to the side of the fixing bolt 22, and arc-shaped guide blocks 24 are provided on both sides of the guide frame 23. The guide blocks 24 are slidably disposed inside the first sealing strip 52.

[0036] It should be noted that the first lead screw 25 is driven to rotate by the motor 21. Since the first lead screw 25 and the fixing bolt 22 are connected by threads, and the fixing bracket 2 limits the fixing bolt 22, the rotation of the first lead screw 25 will cause the fixing bolt 22 and the guide bracket 23 to move up and down. The guide block 24 will squeeze the first sealing strip 52, causing the first sealing strip 52 to move outward and fit with the second sealing strip. Thus, the sealing plate 5 is sealed after the sealing plate 5 is closed, which avoids the sealing between the sealing plates 5 being too strong and causing the sealing plate 5 to not be able to close normally when there are impurities.

[0037] Working principle: When the cargo box 1 is horizontal, the closing plate 5 automatically closes with the rear end of the cargo box 1 under the action of gravity. Since the bottom of the closing plate 5 is inclined, it guides the material in the center of the cargo box 1, causing the material to move to both sides. Then, by rotating the worm gear 54, the turbine 55 and the second lead screw 56 are driven to rotate, thereby causing the limiting plate 57 to descend and embed into the fixed groove 61, thus closing the closing plate 5 and preventing the closing plate 5 from moving.

[0038] Subsequently, the motor 21 drives the first lead screw 25 to rotate, and the first lead screw 25 drives the fixing bolt 22 and the guide frame 23 to move up and down. When the guide frame 23 moves, the guide block 24 pushes the first sealing strip 52 to move outward, so that the first sealing strip 52 fits against the first sealing strip to seal the gap of the sealing plate 5 and improve the sealing effect of the equipment.

[0039] 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.

[0040] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy truck dump truck fastening device, comprising a cargo box (1) and a top plate (3), characterized in that: The cargo box (1) is a hollow cuboid. The upper end and rear side of the cargo box (1) are open. A top plate (3) is provided inside the upper part of the open rear end of the cargo box (1). A fixing frame (2) is symmetrically provided at the lower end of the top plate (3). A fixing block (4) is provided at the upper outer side of the open rear end of the cargo box (1). A fixing shaft (51) is rotatably provided inside the fixing block (4). A closing plate (5) is connected to the inner side of the fixing shaft (51). A fastening mechanism is provided inside the closing plate (5).

2. The fastening device for a heavy-duty dump truck according to claim 1, characterized in that: The fastening mechanism includes a worm (54), a turbine (55), a second lead screw (56), and a limiting plate (57). The worm (54) is rotatably arranged inside the closed plate (5). The turbine (55) is connected to the side of the worm (54). The turbine (55) is rotatably arranged inside the closed plate (5). The second lead screw (56) is arranged on the side of the turbine (55). The limiting plate (57) is threadedly connected to the outside of the second lead screw (56). The limiting plate (57) is slidably arranged inside the closed plate (5).

3. The fastening device for a heavy-duty dump truck according to claim 2, characterized in that: The cargo box (1) has a bottom plate (6) at the lower outer side of the open rear end. A fixing groove (61) is provided at the center of the bottom plate (6), and a limiting plate (57) is embedded in the fixing groove (61).

4. The fastening device for a heavy-duty dump truck according to claim 1, characterized in that: The bottom of the sealing plate (5) near the cargo box (1) is sloping, and sealing blocks (53) are slidably extended at both ends of the sloping plate. A spring is preset inside the sealing plate (5) to push the sealing blocks (53) to move outward.

5. A fastening device for a heavy-duty dump truck according to claim 1, characterized in that: The sealing plate (5) has a first sealing strip (52) vertically installed at both ends on the side of the box (1) near the cargo box, and a second sealing strip is preset on the outside of the fixing frame (2).

6. A fastening device for a heavy-duty dump truck according to claim 5, characterized in that: The inner side of the first sealing strip (52) is hollow, and the first sealing strip (52) is elastic.

7. A fastening device for a heavy-duty dump truck according to claim 5, characterized in that: An electric motor (21) is installed inside the lower part of the fixed frame (2). The output end of the electric motor (21) is connected to a first lead screw (25). A fixing bolt (22) is threadedly connected to the outer side of the first lead screw (25). The fixing bolt (22) is slidably installed inside the fixed frame (2).

8. A fastening device for a heavy-duty dump truck according to claim 7, characterized in that: The fixing bolt (22) is connected to a guide frame (23) on its side. The guide frame (23) is provided with arc-shaped guide blocks (24) on both sides. The guide blocks (24) are slidably disposed inside the first sealing strip (52).

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