Cargo box safety support device and wide-body vehicle

Abstract

The utility model relates to a cargo box safety support device for wide-body vehicle and wide-body vehicle. The cargo box safety support device comprises a brace, a limiting groove and a pull rod. The brace is installed on the frame of the wide-body vehicle so as to be pivotable between an initial position and a support position. In the initial position, the support end of the brace is connected to the frame. The limiting groove is provided on the cargo box of the wide-body vehicle and is configured to receive the support end of the brace in the support position. The pull rod is installed on the cargo box and is configured to be detachably connected to the brace. The pull rod is configured to pivot the brace from the initial position towards the support position as the cargo box is lifted from the frame until the brace reaches and exceeds an intermediate vertical position, thereby enabling the brace to rotate to the support position by its own gravity and be inserted into the limiting groove. The cargo box safety support device of the utility model eliminates the need for manual operation by the operator in a confined space during the lifting of the cargo box from the frame, thereby reducing the safety risk.

Description

Technical Field

[0001] This utility model relates to the technical field of components for operating machinery, and in particular to a cargo box safety support device for a wide-body vehicle, and a wide-body vehicle including such a cargo box safety support device. Background Technology

[0002] Wide-body trucks are commonly used dump trucks in mining, construction, and large-scale engineering transportation. During lifting and unloading operations, their cargo boxes typically rely on hydraulic lifting mechanisms to tip over. Due to the large volume and weight of the cargo boxes, if the hydraulic system experiences depressurization, oil pipe rupture, or valve malfunction during lifting, the cargo box can easily fall unexpectedly, posing a serious safety hazard. Therefore, wide-body trucks are usually equipped with cargo box safety support devices to mechanically limit or support the cargo box during maintenance, inspection, or lifting operations to prevent accidental falls.

[0003] However, existing safety support devices mostly adopt fixed or single-point support structures, which usually require manual operation in the narrow space between the raised cargo box and the vehicle frame. This results in problems such as limited installation location, insufficient support stability, and inconvenience of manual operation.

[0004] Therefore, there is an urgent need for a cargo box safety support device for wide-body vehicles that is structurally sound, easy to operate, and provides reliable support, in order to improve the safety of vehicle maintenance. Utility Model Content

[0005] The purpose of this utility model is to solve at least one of the above-mentioned problems and / or other problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides a cargo box safety support device for a wide-body vehicle. The wide-body vehicle includes a frame and a cargo box movably mounted on the frame. The cargo box safety support device includes a strut, a limiting groove, and a pull rod. The strut is mounted on the frame to pivot between an initial position and a supported position. In the initial position, the supporting end of the strut is connected to the frame. The limiting groove is disposed on the cargo box and configured to receive the supporting end of the strut in the supported position. The pull rod is mounted on the cargo box and can be detachably connected to the strut. The pull rod is configured to cause the strut to pivot from the initial position toward the supported position as the cargo box is lifted from the frame, until the strut reaches and exceeds the intermediate vertical position, thereby allowing the strut to rotate to the supported position by its own weight and insert into the limiting groove.

[0007] According to one embodiment of the present invention, the pull rod includes a main body movably connected to the cargo box and a first hook portion disposed at one end of the main body, and the support rod is provided with a hanging lug for the first hook portion to be inserted and hooked.

[0008] According to one embodiment of the present invention, the main body is provided with a sliding groove, and the cargo box is provided with a sliding shaft passing through the sliding groove. The sliding groove can slide relative to the sliding shaft to allow the pull rod to move relative to the cargo box.

[0009] According to one embodiment of the present invention, the slide groove has a first end away from the first hook and a second end close to the first hook. The slide groove is sized such that when the slide shaft slides to the first end, the first hook can be hooked onto the lug of the support rod in its initial position.

[0010] According to one embodiment of the present invention, the cargo box is provided with a fixed shaft, and the pull rod further includes a second hook located at the first end of the slide groove, and can be hooked to the fixed shaft through the second hook to be fixed on the cargo box.

[0011] According to one embodiment of the present invention, the second hook portion includes a hook section, which is spaced apart from the main body portion and connected to the main body portion through a transition section, and an opening groove for receiving the fixed shaft is formed on the hook section.

[0012] According to one embodiment of the present invention, the cargo box safety support device further includes a mounting bracket fixed on the vehicle frame, and the strut is hinged to the mounting bracket at its connecting end via a pin so that it can rotate between an initial position and a supported position.

[0013] According to one embodiment of the present invention, the cargo box safety support device further includes a stop member disposed on the mounting bracket, the stop member being configured to limit the support rod in the support position.

[0014] According to one embodiment of the present invention, the cargo box safety support device further includes a support bracket fixed on the vehicle frame, the support bracket being constructed and positioned to support the support end of the strut in the initial position.

[0015] According to one embodiment of the present invention, the pull rod is rigid or flexible.

[0016] On the other hand, the present invention provides a wide-body vehicle, which includes a frame and a cargo box movably mounted on the frame, and includes the cargo box safety support device as described above.

[0017] This utility model's cargo box safety support device allows the support rod to fall to the support position under its own weight when the cargo box is lifted from the vehicle frame, thanks to the pulling action of the pull rod. As the cargo box falls, the supporting end of the support rod can insert into the limiting groove to support the cargo box. This eliminates the need for manual operation in a confined space while the cargo box is being lifted from the vehicle frame, reducing safety risks. Attached Figure Description

[0018] The features and advantages of this utility model will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on this utility model, wherein:

[0019] Figure 1 A schematic diagram of a cargo box safety support device according to an embodiment of the present invention and related parts of a wide-body vehicle to which it is applied is shown, wherein the support rod is in the initial position and the tie rod is fixed to the cargo box;

[0020] Figure 2 Showing with Figure 1 In the same embodiment, the pull rod is in a state where it is about to pull up the strut in its initial position;

[0021] Figure 3 Show Figure 2 A partial enlarged view of the cargo box safety support device shown; and

[0022] Figure 4 Showing with Figure 1 and Figure 2 In the same embodiment, the tie rod is in the state of pulling the strut to the middle position.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Support rod; 11. Support end; 12. Connecting end; 13. Hanging lug; 2. Pull rod; 21. Main body; 22. First hook; 23. Slide groove; 231. First end; 232. Second end; 24. Second hook; 241. Hook section; 242. Transition section; 3. Limiting groove; 4. Sliding shaft; 5. Fixed shaft; 6. Mounting bracket; 61. Pin; 7. Stop; 8. Support bracket; 100. Frame; 200. Cargo box. Detailed Implementation

[0025] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be implemented with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0026] The terms "first" and "second" are used below to describe the elements of this application. These terms are used only to distinguish the individual elements and not to limit the nature, order, or number of these elements. The terms "comprising" and "having" are used to indicate an open-ended inclusion and mean that there may be additional elements / components besides those listed.

[0027] The cargo box safety support device of this utility model is particularly suitable for use in wide-body vehicles to support their cargo boxes. For example... Figures 1 to 4 As shown, the wide-body vehicle to which this utility model applies may include a frame 100 and a cargo box 200. The frame 100 is the load-bearing skeleton and main structure of the wide-body vehicle, which can support the engine, transmission system, hydraulic system, and working devices, while also bearing various loads (impact, torque, bending force, etc.) generated by the wide-body vehicle during operation. The cargo box 200 is used to load goods. It is mounted to the frame 100 via a tilting axle and can be tilted around the tilting axle, for example, when maintenance is required, thereby switching between the use state and the tilted state. It can be understood that in the use state, the cargo box 200 can be laid flat on the frame 100; in the tilted state, the cargo box 200 can rotate counterclockwise around the tilting axle, thereby forming a certain angle with the frame 100.

[0028] The cargo box safety support device of this utility model can be installed on the left or right side of the vehicle frame 100, or both sides simultaneously. This cargo box safety support device can conveniently and automatically support and secure the cargo box 200 when it is in a flipped-over state. Due to the installation of this cargo box safety support device, when the cargo box 200 is lifted from the vehicle frame 100, manual operation is no longer required in the narrow space between the cargo box and the vehicle frame to support and secure the cargo box.

[0029] exist Figures 1 to 4In the illustrated embodiment, the cargo box safety support device may include a strut 1, a pull rod 2, and a retaining groove 3. The strut 1 may be rod-shaped and have a circular or square cross-section. The strut 1 may be hinged to the frame 100 via any part of it—particularly one end—to allow pivoting movement between an initial position and a supported position. The pull rod 2 is attached to the cargo box 200 and may be detachably connected to the strut 1. The retaining groove 3 is provided on the cargo box 200, particularly on its bottom surface, and is configured and positioned to receive the strut 1 in the supported position.

[0030] Thus, when strut 1 is in its initial position, it is positioned substantially parallel to the crossbeam of the frame 100 and is not connected to tie rod 2. Figure 1 As shown. When the cargo box 200 needs to be lifted for maintenance, the operator can drive the lever 2, so that the lever 2, while being connected to the cargo box 200 at one end, is connected to the support rod 1 via its other end, as shown. Figure 2 As shown. Therefore, when the cargo box 200 is lifted, it will drive the pull rod 2, which in turn drives the support rod 1 to pivot counterclockwise (as shown in the diagram) towards the support position from its initial position. When the support rod 1 is pulled by the pull rod 2 to reach and exceed the intermediate vertical position (i.e., the position where the central axis of the support rod is substantially coincident with its line of gravity), the pull rod 2 can disengage from the support rod 1, as... Figure 4 As shown. Thereafter, the support rod 1 can fall under its own weight, that is, continue to rotate counterclockwise to reach the support position. At this time, the cargo box 200 can fall slightly, so that the support end 11 of the support rod 1 can enter and be held in the limiting groove 3, thereby realizing the support of the support rod 1 for the cargo box 200.

[0031] Especially for reference Figures 2 to 4 The pull rod 2 may have an overall elongated rod-like or plate-like structure and may include a main body 21 and a first hook 22 disposed at one end of the main body 21. The main body 21 is movably connected to the cargo box 200, and the first hook 22 can be used to connect to the support rod 1. Specifically, the main body 21 of the pull rod 2 may be configured to extend or retract relative to the cargo box 200 to allow the first hook 22 to reach and connect to the support rod 1 when needed, while keeping the main body 21 connected to the cargo box 200. Accordingly, the support rod 1 may be provided with a lug 13, which may be, for example, a generally U-shaped handle-like portion fixed to the support rod 1 by welding, thereby defining a latch between the lug 13 and the support rod 1. The first hook 22 can be inserted into the latch when the pull rod 2 extends and falls under its own weight, thereby hooking onto the lug 13.

[0032] Now for reference Figures 1 to 4Preferably, the main body 21 of the pull rod 2 may be provided with a groove 23 extending along its length. Correspondingly, the cargo box 200 is provided with a sliding shaft 4 passing through the groove 23. The sliding shaft 4 may be generally mushroom-shaped so that the pull rod 2 will not detach from the sliding shaft 4 through its larger diameter head. Through the sliding movement of the groove 23 relative to the sliding shaft 4, the pull rod 2 can move relative to the cargo box 200 to extend or retract toward the support rod 1.

[0033] Here, for example, refer to Figure 1 and Figure 3 The slide groove 23 may have a first end 231 and a second end 232. The first end 231 is the end away from the first hook 22, and the second end 232 is the end close to the first hook 22. The distance between the first end 231 and the second end 232 (i.e., the length of the slide groove 23) can be designed such that when the sliding shaft 4 is located at the first end 231, the first hook 22 can just be hooked onto the lug 13 on the support rod 1 in its initial position. This state can be seen in [reference needed]. Figure 2 and Figure 3 .

[0034] Optionally, such as Figures 1 to 4 As shown, a fixed shaft 5 can be provided on the cargo box 200. This fixed shaft 5 can be approximately mushroom-shaped, and its axial length can be slightly less than the axial length of the sliding shaft 4. The fixed shaft 5 is preferably positioned diagonally above the sliding shaft 4. Correspondingly, the pull rod 2 can include a second hook 24, which is disposed opposite to the first hook 22 at both ends of the main body 21. That is, the main body 21 includes a first end and a second end; the first hook 22 can be disposed at the first end, and the sliding groove 23 and the second hook 24 can be disposed at the second end. The second hook 24 can hook the fixed shaft 5 to fix the pull rod 2 to the cargo box 200.

[0035] As an example, see reference Figure 3 The second hook portion 24 may include a hook section 241 and a transition section 242. The hook section 241 may be spaced apart from the main body portion 21 and connected to the main body portion 21 via the transition section 242, thereby forming a gap between the hook section 241 and the main body portion 21 for accommodating the fixed shaft 5. This gap advantageously has the form of an open slot, thereby accommodating the fixed shaft 5, especially when the pull rod 2 is not in use (i.e., when the connecting strut 1 is not being operated, at which time the sliding shaft 4 is located at the second end 232 of the slide groove 23), so that the pull rod 2 can be fixed to the cargo box 200 by the engagement of the hook section 241 with the fixed shaft 5 and the engagement of the sliding shaft 4 with the slide groove 23.

[0036] like Figure 1 , Figure 2 and Figure 4As shown, the cargo box safety support device according to this embodiment may further include a mounting bracket 6. The mounting bracket 6 is fixed to the vehicle frame 100 and may include a bracket body and a mounting plate integrally formed or welded to one side of the bracket body. The mounting plate can be attached to the vehicle frame 100 and fixed to the vehicle frame 100 via a plurality of fasteners. A pin 61 passes through a pin hole on the bracket body and a mounting hole on the connecting end 12 of the strut 1, so as to hinge the strut 1 to the bracket body of the mounting bracket 6, allowing the strut 1 to be mounted to the vehicle frame 100 and to pivot relative to the vehicle frame 100 between an initial position and a supported position.

[0037] Optionally, such as Figure 3 and Figure 4 As shown, the cargo box safety support device according to this embodiment may further include a stop 7 disposed at the mounting bracket 6. The stop 7 may be disposed adjacent to the connecting end 12 of the support rod 1 and positioned on the side opposite to the support rod 1 in its initial position. Thus, when the support rod 1 is pulled by the pull rod 2 and rotates past its intermediate vertical position and continues to rotate to a predetermined position due to its own weight, the support rod 1 may abut against the stop 7. Therefore, the stop 7 can be used to define the support position of the support rod 1. The stop 7 may be welded or detachably fixed to the frame 100 or more specifically, fixed to the mounting plate of the mounting bracket 6.

[0038] refer to Figure 1 , Figure 2 and Figure 4 The truck safety support device according to this embodiment may further include a support bracket 8. This support bracket 8 may have a generally L-shaped plate structure, one branch of which may be detachably fixed to the frame 100, for example, by fastening screws, and the other branch extending relative to the frame 100 and having a groove provided at its top. Thus, when the strut 1 is in its initial position, the strut 1, and particularly its connecting end 12, may be placed within this groove and thereby held on the frame 100.

[0039] According to this utility model, the pull rod 2 can be rigid or flexible. Figures 1 to 4 In the illustrated embodiment, the pull rod 2 is made of a rigid metal rod or plate. However, the pull rod 2 can also be formed, for example, by a flexible rope, as long as it can be detachably connected to the support rod 1 and can pull the support rod 1 to its intermediate vertical position.

[0040] This utility model also provides a wide-body vehicle that includes the above-mentioned cargo box safety support device.

[0041] Industrial applicability

[0042] The cargo box safety support device according to this utility model is particularly suitable for operating machinery that requires support and fixation of tilted devices (such as cargo boxes) during maintenance, especially wide-body vehicles with cargo boxes. However, it should be understood that the cargo box safety support device according to this utility model can also be used for other devices that require support, such as operating machinery that requires tilting the cab for maintenance.

[0043] by Figures 1 to 4 In the illustrated embodiment, when the wide-body vehicle is in normal driving or parking condition and the cargo box 200 does not need to be tilted, the strut 1 can be held on the side of the crossbeam of the frame 100 via the mounting bracket 6 and the support bracket 8. Simultaneously, the second end 232 of the slide groove 23 of the pull rod 2 abuts against the slide shaft 4, and the opening groove at the second hook portion 24 of the pull rod 2 abuts against the fixed shaft 5, thereby holding the pull rod 2 on the cargo box 200. In this case, the cargo box 200 rests on the frame 100, the pull rod 2 is located on one side of the strut 1, and the two are not connected to each other. Figure 1 As shown.

[0044] When the cargo box 200 needs to be lifted for maintenance, the operator can detach the second hook 24 of the pull rod 2 from the fixed shaft 5, pull the pull rod 2 so that its slide groove 23 slides relative to the slide shaft 4 until the slide shaft 4 approaches or reaches the first end 231 of the slide groove 23, thereby allowing the first hook 22 of the pull rod 2 to be inserted into the lug 13 on the support rod 1. Then, the operator can begin to tilt the cargo box 200. During this process, the pull rod 2 connected to the cargo box 200 will pull the support rod 1, causing it to rotate counterclockwise. When the support rod 1 is tilted... Figure 4 When the support rod 1 is rotated to the middle vertical position and beyond that position, it can continue to rotate counterclockwise due to its own weight. During this period, the pull rod 2 can move freely within the lug 13 of the support rod 1 so as not to affect the rotation of the support rod 1. When the support rod 1 contacts and abuts against the stop 7, the support rod 1 reaches its supporting position and stops rotating. At this time, the cargo box 200 falls, the supporting end 11 of the support rod 1 inserts into the limiting groove 3, and the cargo box 200 is then supported and fixed by the support rod 1.

[0045] When the maintenance is complete and the cargo box 200 needs to be returned to its original position on the frame 100, the cargo box 200 can be slightly lifted to allow the support end 11 of the support rod 1 to be pulled out of the limiting groove 3. At this time, the operator can push the support rod 1 to rotate it clockwise until it reaches the desired position. Figure 1 The initial position shown is supported on the frame 100.

[0046] Optionally, the operator can disengage the tie rod 2 from the support rod 1 after the support rod 1 reaches its supported position, or disengage the tie rod 2 from the support rod 1 after the support rod 1 returns to its initial position. Furthermore, after the tie rod 2 is disengaged from the support rod 1, it can be placed as follows: Figure 1The state shown is that it is held on the cargo box 200.

[0047] The cargo box safety support device of this utility model can automatically lift and move the support rod 1 to its central vertical position via the pull rod 2 when the cargo box 200 is lifted from the frame 100, and allow the support rod 1 to reach its support position by its own weight. This avoids the need for manual operation in the confined space inside the lower frame of the cargo box during the lifting of the cargo box 200 from the frame 100, reducing safety risks.

[0048] Furthermore, the pull rod 2 of the cargo box safety support device of this invention can be fixed to the cargo box 200 when not in use, and can be connected to the support rod 1 to automatically function when in use by moving relative to the cargo box 200. This reduces the risk of component loss and facilitates the use and operation of the operator.

[0049] Various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of this invention. Other embodiments of this invention will be apparent to those skilled in the art based on the practice of this invention disclosed in this specification. This specification and the examples disclosed herein should be considered illustrative only, and the true scope of this invention is defined by the appended claims and their equivalents.

Claims

1. A cargo box safety support device for a wide-body vehicle, the wide-body vehicle including a frame (100) and a cargo box (200) movably mounted on the frame (100), characterized in that, The cargo box safety support device includes: A strut (1) is mounted on the frame (100) so as to be pivotable between an initial position and a supported position, wherein in the initial position the supported end (11) of the strut (1) is connected to the frame (100); A limiting groove (3) is provided on the cargo box (200) and configured to receive the support end (11) of the strut (1) in a supported position; and A pull rod (2) is mounted on the cargo box (200) and can be detachably connected to the support rod (1). The pull rod (2) is configured to drive the support rod (1) to pivot from the initial position toward the support position as the cargo box (200) is lifted off the frame (100) until the support rod (1) reaches and exceeds the middle vertical position, thereby enabling the support rod (1) to rotate to the support position by its own gravity and insert into the limiting groove (3).

2. The cargo box safety support device according to claim 1, characterized in that, The pull rod (2) includes a main body (21) movably connected to the cargo box and a first hook (22) provided at one end of the main body (21). The support rod (1) is provided with a hanging ear (13) for the first hook (22) to be inserted and hooked.

3. The cargo box safety support device according to claim 2, characterized in that, The main body (21) is provided with a slide groove (23), and the cargo box (200) is provided with a sliding shaft (4) passing through the slide groove (23). The slide groove (23) can slide relative to the sliding shaft (4) to allow the pull rod (2) to move relative to the cargo box (200).

4. The cargo box safety support device according to claim 3, characterized in that, The groove (23) has a first end (231) away from the first hook (22) and a second end (232) close to the first hook (22). The groove (23) is sized so that when the sliding shaft (4) slides to the first end (231), the first hook (22) can be hooked onto the lug (13) of the support rod (1) in the initial position.

5. The cargo box safety support device according to claim 4, characterized in that, The cargo box (200) is provided with a fixed shaft (5), and the pull rod (2) also includes a second hook (24) located at the first end (231) of the slide (23), and can be fixed on the cargo box (200) by hooking the fixed shaft (5) through the second hook (24).

6. The cargo box safety support device according to claim 5, characterized in that, The second hook (24) includes a hook section (241) which is spaced apart from the main body (21) and connected to the main body (21) via a transition section (242), thereby forming an opening groove for receiving the fixed shaft (5).

7. The cargo box safety support device according to any one of claims 1 to 6, characterized in that, The cargo box safety support device also includes a mounting bracket (6) fixed to the frame (100), and the strut (1) is hinged to the mounting bracket (6) at its connecting end (12) via a pin (61) so as to be pivotable between the initial position and the supported position.

8. The cargo box safety support device according to claim 7, characterized in that, The cargo box safety support device also includes a stop (7) disposed on the mounting bracket (6), the stop (7) being configured to limit the strut (1) in a support position.

9. The cargo box safety support device according to any one of claims 1 to 6, characterized in that, The cargo box safety support device also includes a support bracket (8) fixed to the frame (100), the support bracket (8) being constructed and positioned to support the support end (11) of the strut (1) in the initial position.

10. The cargo box safety support device according to claim 1 or 2, characterized in that, The tie rod (2) can be rigid or flexible.

11. A wide-body vehicle comprising a frame (100) and a cargo box (200) movably mounted on said frame (100), characterized in that, The wide-body vehicle also includes a cargo box safety support device according to any one of claims 1 to 10.

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