A carriage unloading tailgate with a protection structure

By designing a protective bar structure with sliding and locking components, the problems of traditional unloading tail panels being unable to be folded and stored, and being unstable, have been solved. This has enabled the protective bar to be stably deployed and conveniently stored, improving the safety and efficiency of loading and unloading.

CN224528526UActive Publication Date: 2026-07-21DONGGUAN CITY DACHENG MASCH EQUIP MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN CITY DACHENG MASCH EQUIP MFG CO LTD
Filing Date
2025-07-14
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The traditional design of the protective bar on the unloading tailgate of the cargo compartment has the problem that it cannot be folded and stored, resulting in a large space occupation and instability, which poses a safety hazard.

Method used

A protective rod structure with sliding and locking components was designed. The protective rod can be stably unfolded and folded for storage through the cooperation of the slider and the locking block. The high-strength aluminum alloy connecting plate and ergonomic grip groove improve the ease of operation and safety.

Benefits of technology

It enables the protective bar to be deployed stably, reduces space occupation when not in use, and improves safety and ease of operation during loading and unloading.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a car carriage unloading tailgate technical field especially, relate to a kind of car carriage unloading tailgate with protective structure.The utility model provides such a kind of car carriage unloading tailgate with protective structure, including car carriage tailgate, connecting plate, connecting piece, rotating rod, guard bar, sliding assembly and clamping position component, car carriage tailgate is as basic load-bearing component, its top is installed with connecting plate, at the both sides of connecting plate top, it is installed with connecting piece in symmetrical mode, every set of symmetrically arranged connecting piece is rotatably connected with rotating rod between each other.The guard bar that can be rotatably unfolded, when loading and unloading, the left and right side areas of protective unloading tailgate are erected, effectively block the goods slide, simultaneously provide safety protection for operator;The foldable storage design of guard bar greatly reduces the space occupation under non-working state in folding state, facilitate the transportation and storage of unloading tailgate, simultaneously also provide more flexible space environment for loading and unloading operation.
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Description

Technical Field

[0001] This utility model relates to the technical field of unloading tailgates for truck bodies, and in particular to an unloading tailgate for truck bodies with a protective structure. Background Technology

[0002] In the field of modern logistics and transportation, cargo unloading tailgates are widely used in various types of freight vehicles as an important auxiliary device for achieving efficient loading and unloading of goods. During the loading and unloading process, to prevent goods from accidentally slipping and to ensure the safety of operators, cargo unloading tailgates are usually equipped with protective structures.

[0003] Traditional cargo unloading tailgate guardrails are mostly fixed designs, which cannot be folded and stored when not in use. This not only occupies a lot of space, but also obstructs the transportation, storage and loading and unloading operations of the tailgate. On the other hand, some foldable guardrails are difficult to maintain a stable upright position after being unfolded. During loading and unloading, they are prone to shaking or even tipping over due to cargo collisions or external interference, and cannot reliably play a protective role, posing a significant safety hazard.

[0004] Therefore, there is an urgent need to design a protective bar structure that can be easily folded and stored and stably unfolded, and has good protective performance and durability, in order to solve the above-mentioned problems of the existing cargo unloading tailgate protection structure and improve the safety and efficiency of loading and unloading operations. Utility Model Content

[0005] In order to overcome the shortcomings mentioned in the background art, the technical problem to be solved is to provide a cargo unloading tailgate with a protective structure.

[0006] The technical solution is as follows: A cargo unloading tailgate with a protective structure includes a cargo tailgate, a connecting plate, connectors, a rotating rod, a protective rod, a sliding assembly, and a locking assembly. The cargo tailgate serves as the basic load-bearing component, with a connecting plate installed on its top. Connectors are symmetrically installed on both sides of the top of the connecting plate. A rotating rod is rotatably connected between each set of symmetrically arranged connectors. A protective rod is connected to the inner side of the rotating rod. In the initial state, the protective rod is in a folded and stowed state, tightly fitting against the wall of the connecting plate. The protective rod is equipped with a sliding assembly and a locking assembly.

[0007] Furthermore, the connecting plate is made of high-strength aluminum alloy and has anti-slip patterns on its surface.

[0008] Furthermore, the sliding assembly includes a reinforcing rod, a hinge rod, and a slider. Two reinforcing rods are connected at intervals on the protective rod, and their right ends are respectively connected to the rotating rod. The outer ends of the reinforcing rods are rotatably connected to the hinge rods, and the lower ends of the hinge rods are rotatably connected to the sliders. Correspondingly, grooves are provided on the connecting plate at positions corresponding to the sliders, and the sliders and grooves form a sliding connection pair.

[0009] Furthermore, the locking assembly includes locking blocks and telescopic springs. Locking blocks are slidably connected to the front and rear sides of the slider, and telescopic springs are connected between corresponding two locking blocks. Second locking slots adapted to the locking blocks are respectively opened on the front and rear sides of the inner side of the slide groove, and first locking slots adapted to the locking blocks are respectively opened on the front and rear sides of the outer side of the slide groove. When the initial protective rod is in the folded state, the locking blocks are locked into the second locking slots on the inner side.

[0010] Furthermore, it also includes a dust cover, with the dust cover sleeved on the outside of the reinforcing rod, and the left and right ends of the dust cover connected to the connecting rod and the protective rod, respectively.

[0011] Furthermore, the bottom surface of the guard bar has an ergonomically designed grip groove.

[0012] The beneficial effects of this utility model are as follows: 1. The rotatable and unfoldable protective rod can be erected to protect the left and right sides of the unloading tail plate during loading and unloading, effectively preventing the goods from slipping and providing safety protection for the operators; the foldable storage design of the protective rod greatly reduces the space occupied in the non-working state when folded, which facilitates the transportation and storage of the unloading tail plate, and also provides a more flexible space environment for loading and unloading operations.

[0013] 2. Through the innovative combination of the sliding component and the locking component, the problem of instability in existing foldable protective bars after unfolding is effectively solved. When the protective bar is unfolded and erected, the slider drives the locking block to precisely engage with the first outer locking groove, achieving a stable lock. Even if the protective bar is subjected to collisions with goods or external interference during loading and unloading, it can still maintain a stable state, reliably preventing goods from slipping and providing solid safety protection for operators. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the connecting parts, rotating rod, and protective rod of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the reinforcing rod, slider, and dust cover components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the reinforcing rod, hinge rod, and slider components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the slider, locking block, and telescopic spring components of this utility model.

[0019] Figure 6 This is a schematic diagram of the planar structure of this utility model.

[0020] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0021] Figure 8 This is a three-dimensional structural diagram of the rotating rod, protective rod, and grip groove components of this utility model.

[0022] Reference numerals: 1_Tail panel of the carriage, 2_Connecting plate, 3_Connector, 4_Rotating rod, 5_Protective rod, 6_Reinforcing rod, 7_Hinge rod, 8_Slider, 9_Clocking block, 10_Telescopic spring, 11_Slide groove, 12_First slot, 13_Second slot, 14_Dust cover, 15_Grip groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example: A cargo unloading tailgate with a protective structure, such as... Figures 1-8 As shown, the system includes a tailgate 1, a connecting plate 2, connectors 3, a rotating rod 4, a protective rod 5, a sliding assembly, and a locking assembly. The tailgate 1 serves as the basic load-bearing component, with the connecting plate 2 mounted on its top. This connecting plate 2 provides a stable support platform for the installation of other components. The connecting plate 2 is made of high-strength aluminum alloy, which is lightweight, high-strength, and corrosion-resistant. It also features anti-slip patterns on its surface to effectively increase the friction between the cargo and the tailgate, preventing the cargo from sliding during loading and unloading. Connectors 3 are symmetrically installed on both the left and right sides of the top of the connecting plate 2. Each set of symmetrically arranged connectors 3... The device is rotatably connected to a rotating rod 4, and a protective rod 5 is welded to the inner side of the rotating rod 4. In the initial state, the protective rod 5 is folded and stored, closely fitting the wall of the connecting plate 2. This design can effectively save space and facilitate the transportation and storage of the tail plate. At the same time, the protective rod 5 is equipped with a sliding component and a locking component for stable unfolding and storage. The bottom surface of the middle part of the protective rod 5 is provided with an ergonomically designed grip groove 15. This grip groove 15 can provide a comfortable and effective force application point when the operator folds and unfolds the protective rod 5. It not only facilitates the application of force but also provides a good anti-slip effect, improving the convenience and safety of operation.

[0025] like Figures 3-4As shown, the sliding assembly includes a reinforcing rod 6, a hinge rod 7, and a slider 8. Two reinforcing rods 6 are welded at intervals on the protective rod 5. These reinforcing rods 6 not only enhance the structural strength of the protective rod 5, but their right ends are also connected to the rotating rod 4 to form a stable connection structure. The outer ends of the reinforcing rods 6 are rotatably connected to the hinge rods 7, and the lower ends of the hinge rods 7 are rotatably connected to the sliders 8. Correspondingly, grooves 11 are provided on the connecting plate 2 at positions corresponding to the sliders 8. The sliders 8 and the grooves 11 form a sliding connection pair, allowing the sliders 8 to slide smoothly along the grooves 11, providing guidance and support for the rotation of the protective rod 5.

[0026] like Figures 5-7 As shown, the locking assembly includes a locking block 9 and a telescopic spring 10. The front and rear sides of the slider 8 are slidably connected to the locking blocks 9, and the telescopic spring 10 is connected between the corresponding two locking blocks 9. The front and rear sides of the inner side of the slide groove 11 are respectively provided with second locking slots 13 that are adapted to the locking blocks 9, and the front and rear sides of the outer side of the slide groove 11 are respectively provided with first locking slots 12 that are adapted to the locking blocks 9. When the initial protective rod 5 is in the folded state, the locking block 9 is locked into the inner second locking slot 13. When the protective rod 5 is unfolded, the locking block 9 will be locked into the outer first locking slot 12, thereby fixing the position of the slider 8.

[0027] like Figures 2-3 As shown, it also includes a dust cover 14. The dust cover 14 is sleeved on the outside of the reinforcing rod 6. The left and right ends of the dust cover 14 are connected to the connecting rod and the protective rod 5, respectively. The dust cover 14 can effectively prevent dust, debris and other objects from entering the connection between the reinforcing rod 6 and the hinge rod 7, avoid component wear and jamming caused by impurities entering, and extend the service life of the device.

[0028] During loading and unloading operations in the cargo compartment, this device is installed in the loading and unloading opening of the cargo compartment via the tailgate 1, serving as an extended platform. To prevent goods from falling off the unloading tailgate during loading and unloading, the protective rod 5 needs to be rotated upwards by 90 degrees to unfold it into an upright position, protecting the left and right sides of the unloading tailgate. The specific operation process is as follows: The operator directly rotates the protective rod 5 upwards, causing the rotating rod 4 to rotate around the connecting piece 3. During the rotation, according to the mechanical transmission principle, the reinforcing rod 6 rotates accordingly. The reinforcing rod 6 pushes the slider 8 to move outwards along the slide groove 11 through the hinge rod 7. During the movement of the slider 8, the locking block 9 is squeezed and moves inwards, causing the telescopic spring 10 to compress. The locking block 9 disengages from the second locking groove 13. When the slider 8 and the locking block 9 slide to align with the first locking groove 12, the telescopic spring 10 rebounds and resets according to the principle of elastic potential energy, causing the locking block 9 to move outwards and lock into the first locking groove 12, thereby fixing the position of the slider 8. At this point, the protective rod 5 has rotated 90 degrees and is in an upright position, effectively protecting the left and right sides. During loading and unloading, it acts as a barrier to prevent goods from slipping off the sides, while also providing safety protection for operators working on the tailgate, reducing the risk of accidental falls. After the unloading tailgate is used, the operator applies an inward rotational force to the protective rod 5, folding it and attaching it to the connecting plate 2. During this process, the hinge rod 7 reverses, causing the slider 8 to move inward. The slider 8, through the telescopic spring 10, disengages the locking block 9 from the first locking slot 12. Once the slider 8 has moved inward into position, the locking block 9 re-engages with the second locking slot 13, completing the locking of the protective rod 5 in its retracted state. Subsequently, the unloading tailgate can be removed from the truck bed for future use.

Claims

1. A cargo unloading tailgate with a protective structure, characterized in that, It includes a tail section (1), a connecting plate (2), a connector (3), a rotating rod (4), a protective rod (5), a sliding assembly, and a locking assembly. The tail section (1) serves as the basic load-bearing component, and a connecting plate (2) is installed on its top. On both sides of the top of the connecting plate (2), connectors (3) are installed symmetrically. A rotating rod (4) is rotatably connected between each set of symmetrically arranged connectors (3). A protective rod (5) is connected to the inner side of the rotating rod (4). In the initial state, the protective rod (5) is in a folded and stored state, tightly fitting against the wall of the connecting plate (2). A sliding assembly and a locking assembly are provided on the protective rod (5).

2. The unloading tailgate with a protective structure for a cargo compartment according to claim 1, characterized in that, The connecting plate (2) is made of high-strength aluminum alloy and has anti-slip patterns on its surface.

3. The unloading tailgate with a protective structure for a cargo compartment according to claim 2, characterized in that, The sliding assembly includes a reinforcing rod (6), a hinge rod (7), and a slider (8). Two reinforcing rods (6) are connected at intervals on the protective rod (5), and their right ends are connected to the rotating rod (4). The outer ends of the reinforcing rods (6) are rotatably connected to the hinge rods (7), and the lower ends of the hinge rods (7) are rotatably connected to the sliders (8). Correspondingly, grooves (11) are provided on the connecting plate (2) at positions corresponding to the sliders (8). The sliders (8) and the grooves (11) form a sliding connection pair.

4. The unloading tailgate with a protective structure for a cargo compartment according to claim 3, characterized in that, The locking assembly includes a locking block (9) and a telescopic spring (10). The front and rear sides of the slider (8) are slidably connected to the locking block (9), and the corresponding two locking blocks (9) are connected to the telescopic spring (10). The front and rear sides of the inner side of the slide groove (11) are respectively provided with a second locking groove (13) that is adapted to the locking block (9), and the front and rear sides of the outer side of the slide groove (11) are respectively provided with a first locking groove (12) that is adapted to the locking block (9). When the initial protective rod (5) is in the folded state, the locking block (9) is locked into the second locking groove (13) on the inner side.

5. The unloading tailgate with a protective structure for a cargo compartment according to claim 4, characterized in that, It also includes a dust cover (14), and the dust cover (14) is sleeved on the outside of the reinforcing rod (6). The left and right ends of the dust cover (14) are connected to the connecting rod and the protective rod (5) respectively.

6. The unloading tailgate with a protective structure for a cargo compartment according to claim 5, characterized in that, The bottom of the middle section of the guard rod (5) is provided with an ergonomically designed grip groove (15).