A safety device for a flatbed truck
By designing adjustable protective components, the problem of unstable cargo center of gravity during unloading of heavy-duty cargo vans has been solved, achieving safety and flexibility in step-by-step unloading and adapting to the transportation needs of cargo of different heights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SIPING FENJIN SPECIAL AUTOMOBILE CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-06-09
AI Technical Summary
When transporting fragile goods, heavy-duty cargo trucks must unload according to the principle of top-down unloading. However, the protective frames on both sides of the vehicle are an integral structure and cannot be disassembled in stages. Directly opening the protective doors on both sides to unload the goods can easily cause the upper layer of goods to lose stable support, shift the center of gravity, and pose a risk of collapse, endangering the safety of on-site personnel.
Design a safety protection device for a cargo van, including adjustable protective components. Through the step-by-step unfolding of the limit rods and protective frames, it enables step-by-step unloading from top to bottom, avoiding the direct opening of the side protective doors and ensuring the stability of the cargo.
It enables step-by-step unloading, avoiding cargo falling due to unstable center of gravity, improving the safety of the unloading process, and adapting to the transportation needs of goods at different heights.
Smart Images

Figure CN224335721U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cargo truck technology, and in particular to a safety protection device for cargo trucks. Background Technology
[0002] Heavy-duty stake vans are heavy-duty commercial vehicles specifically designed for cargo transportation. They typically feature the following characteristics: high load capacity (gross weight exceeding 14 tons), suitability for long-distance transport and high-load operations, stake-type design (the cargo box has a stake structure that provides good ventilation, facilitating loading, unloading, and transport of goods), good stability (equipped with a powerful engine and four-wheel drive system, enabling stable driving in complex road conditions), and widespread use in the logistics and transportation industries. They adapt to the transportation needs of various goods, and this type of vehicle has become an important member of the heavy-duty truck category due to its efficient transportation capabilities and good maneuverability.
[0003] Such vehicles pose certain safety hazards when transporting fragile goods: unloading must follow a top-down, step-by-step principle, but the protective frames on both sides of the vehicle are an integral structure that cannot be disassembled in stages. If the protective doors on both sides are opened directly for unloading, the upper layer of goods may lose its stable support, causing the center of gravity to shift and the vehicle to collapse during the unloading process, posing a safety threat to on-site personnel. Utility Model Content
[0004] Given that such trucks need to follow a top-down, step-by-step unloading principle when transporting fragile goods, but the protective frames on both sides of the vehicle are an integral structure and cannot be disassembled in stages, if the protective doors on both sides are opened directly for unloading, the upper layer of goods may lose stable support and shift the center of gravity, which could easily lead to collapse during the unloading process, posing a safety threat to on-site personnel. Therefore, this utility model was proposed.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a safety protection device for a stake-cargo truck, including a stake-cargo truck, wherein two sets of symmetrical first protective components are provided on the upper end of the stake-cargo truck, the first protective component includes a connecting seat provided on the upper end of the stake-cargo truck, an adjusting seat is sleeved on the upper end of the connecting seat, two sets of symmetrical sleeve plates are provided on both ends of the outer wall of the adjusting seat, an adjusting plate is inserted into the lower end of the sleeve plate, a first limiting sleeve is provided on the upper end of the sleeve plate, and a second protective component is provided on the upper end of the sleeve plate. The second protective component includes a fixed column fixedly provided on the upper end of the adjusting seat, two sets of rotating sleeves are sleeved on the outer wall of the fixed column, and a connecting frame is provided on the outer wall of the two sets of rotating sleeves at opposite ends, respectively. A first protective frame and a second protective frame are provided at the upper end of the connecting frame, a second limiting sleeve is provided on the upper end of the first protective frame, a third limiting sleeve is provided on the lower end of the second protective frame, and a limiting rod is inserted into the middle of the second limiting sleeve, the third limiting sleeve, and the middle of the first limiting sleeve.
[0006] As a preferred embodiment of the safety protection device for the cargo box truck described in this utility model, the adjusting seat is movably sleeved on the upper end of the outer wall of the connecting seat, and the outer wall of the adjusting seat is provided with multiple sets of positioning holes, one set of which is threaded with a positioning bolt at the middle end, and the upper outer wall of the connecting seat is provided with a threaded hole that cooperates with the positioning bolt, and the front end of the positioning bolt is threaded into the threaded hole.
[0007] As a preferred embodiment of the safety protection device for the cargo box truck described in this utility model, wherein the lower outer wall of the adjusting plate near the connecting seat is rotatably connected to the connecting seat.
[0008] As a preferred embodiment of the safety protection device for the cargo box truck described in this utility model, the adjusting plate is movably inserted into the inner wall of the sleeve plate, the outer walls at both ends of the adjusting plate are provided with sliders, and the inner wall of the sleeve plate is provided with a sliding groove that cooperates with the sliders.
[0009] As a preferred embodiment of the safety protection device for the cargo box truck described in this utility model, the rotating sleeve is rotatably mounted on the outer wall of the fixed column, the second protective frame and the connecting frame are fixedly connected, and the lower outer wall of the first protective frame near the connecting frame is rotatably connected to the connecting frame.
[0010] As a preferred embodiment of the safety protection device for the cargo box truck described in this utility model, the limiting rod moves through the middle of the second limiting sleeve, the third limiting sleeve, and the first limiting sleeve.
[0011] As a preferred embodiment of the safety protection device for the cargo box truck described in this utility model, the inner walls of both the first and second protective frames are provided with cargo boxes.
[0012] Compared with the prior art, the present invention has at least the following beneficial effects:
[0013] This utility model allows the limiting rod to be pulled out from the middle of the second limiting sleeve, the third limiting sleeve, and the first limiting sleeve. The first protective frame, the second protective frame, and the sleeve plate can be unfolded from top to bottom in sequence, and the goods can be unloaded step by step. This avoids directly opening the protective doors on both sides to unload the goods, which could cause the center of gravity of the goods to become unstable and fall, injuring the unloading personnel, and increases the safety of the unloading process.
[0014] 2. In this utility model, when the stacked goods are high, the adjusting seat can be slid upward along the connecting seat. The adjusting seat drives the fixed column to move upward, and the adjusting plate unfolds outward along the inner wall of the sleeve plate, thereby increasing the overall protective height of the device. After reaching the appropriate height, the positioning bolt can be screwed into the middle of the positioning hole corresponding to the threaded hole at the upper end of the connecting seat to complete the fixing of the adjusting seat, thereby enabling the transportation protection of goods of different heights. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the safety protection device for cargo trucks of this utility model;
[0016] Figure 2 This is a partial three-dimensional structural diagram of the safety protection device for cargo trucks of this utility model;
[0017] Figure 3 This is a three-dimensional cross-sectional view of the first protective component of the safety protection device for cargo trucks of this utility model.
[0018] Figure 4 This is a three-dimensional structural diagram of the second protective component of the safety protection device for cargo trucks of this utility model.
[0019] Explanation of reference numerals in the attached figures:
[0020] 1. Cargo van; 2. First protective assembly; 21. Connecting seat; 22. Adjusting seat; 23. Positioning hole; 24. Positioning bolt; 25. Sleeve plate; 26. Adjusting plate; 27. First limiting sleeve; 3. Second protective assembly; 31. Fixing post; 32. Rotating sleeve; 33. Connecting frame; 34. First protective frame; 35. Second protective frame; 36. Second limiting sleeve; 37. Third limiting sleeve; 4. Cargo van; 5. Limiting rod. Detailed Implementation
[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1
[0022] Reference Figures 1-4This is the first embodiment of the present invention, providing a safety protection device for a staked truck, including a staked truck 1. The staked truck 1 has two symmetrical sets of first protective components 2 on its upper end. Each first protective component 2 includes a connecting seat 21 located on the upper end of the staked truck 1. An adjusting seat 22 is fitted onto the upper end of the connecting seat 21. Two symmetrical sets of sleeve plates 25 are provided at both ends of the outer wall of the adjusting seat 22. An adjusting plate 26 is inserted into the lower end of each sleeve plate 25. A first limiting sleeve 27 is provided on the upper end of each sleeve plate 25. A second protective component 3 is provided on the upper end of each sleeve plate 25. The second protective component 3 includes a fixed column 31 fixedly mounted on the upper end of the adjusting seat 22. Two sets of rotating sleeves 32 are sleeved on the outer wall of the fixed column 31. A connecting frame 33 is provided on the outer wall of the two sets of rotating sleeves 32 at their opposite ends. A first protective frame 34 and a second protective frame 35 are provided at the upper and lower ends of the connecting frame 33, respectively. A second limiting sleeve 36 is provided at the upper end of the first protective frame 34, and a third limiting sleeve 37 is provided at the lower end of the second protective frame 35. A limiting rod 5 is inserted into the middle of the second limiting sleeve 36, the third limiting sleeve 37, and the middle of the first limiting sleeve 27.
[0023] The adjusting seat 22 is movably sleeved on the upper end of the outer wall of the connecting seat 21. The outer wall of the adjusting seat 22 has multiple sets of positioning holes 23, one set of which has a positioning bolt 24 threadedly inserted at its center. The upper outer wall of the connecting seat 21 has a threaded hole that mates with the positioning bolt 24, with the front end of the positioning bolt 24 threadedly inserted into the threaded hole. The lower outer wall of the adjusting plate 26 near the connecting seat 21 is rotatably connected to the connecting seat 21. The adjusting plate 26 is movably inserted into the inner wall of the sleeve plate 25. The outer walls of the two ends of the 26 are provided with sliders, and the inner wall of the sleeve 25 is provided with a sliding groove that cooperates with the slider. The rotating sleeve 32 is rotatably sleeved on the outer wall of the fixed column 31. The second protective frame 35 and the connecting frame 33 are fixedly connected. The lower outer wall of the first protective frame 34 near the connecting frame 33 is rotatably connected to the connecting frame 33. The limiting rod 5 moves through the middle of the second limiting sleeve 36, the third limiting sleeve 37 and the first limiting sleeve 27. The inner walls of the first protective frame 34 and the second protective frame 35 are both provided with a grid 4.
[0024] When unloading goods from the upper part of the cargo box truck 1, the limiting rod 5 can be pulled out from the middle of the second limiting sleeve 36. At this time, the first protective frame 34 can be rotated downwards along the upper part of the connecting frame 33, rotating towards the second protective frame 35, until the first protective frame 34 is placed side by side on top of the second protective frame 35. At this time, the first layer of goods above the second protective frame 35 can be unloaded. Goods below the second protective frame 35 will not fall during the unloading process, avoiding the risk of the goods falling due to instability and causing injury to the unloading personnel. Then, the first layer of goods above the second protective frame 35 can be unloaded. After unloading goods above the second protective frame 35, the limiting rod 5 can be pulled out from the third limiting sleeve 37 and the first limiting sleeve 27. Then, rotate the connecting frame 33, and rotate the rotating sleeve 32 along the outer wall of the fixed column 31 until the two sets of second protective frames 35 are set side by side. At this time, the unloading personnel can unload the second layer of goods above the sleeve plate 25. After unloading the goods above the sleeve plate 25, the sleeve plate 25 can be rotated along both sides of the connecting seat 21 so that the sleeve plate 25 and the upper end of the cargo box truck 1 are parallel to each other. The unloading personnel can then unload the remaining second layer of goods above the cargo box truck 1. For unloading three layers of goods, the goods should be unloaded sequentially according to the above-described steps. This avoids directly opening the side protective doors for unloading, which could cause the goods to become unstable and fall, injuring the unloading personnel. This increases safety during the unloading process. After the goods are unloaded, the adjusting plate 26, the first protective frame 34, and the second protective frame 35 can be unfolded in reverse order as described above. Then, the limiting rod 5 is inserted into the middle of the first limiting sleeve 27, the third limiting sleeve 37, and the second limiting sleeve 36. At this point, the adjusting plate 26, the first protective frame 34, and the second protective frame 35 are vertically parallel. When the load cannot be rotated, the goods can be loaded onto the top of the cargo truck 1 for transportation. When the stacked goods are high, the adjusting seat 22 can be slid upward along the connecting seat 21. The adjusting seat 22 drives the fixing column 31 to move upward, and the adjusting plate 26 unfolds outward along the inner wall of the sleeve plate 25, thereby increasing the overall protection height of the device. This allows for the transportation protection of goods of different heights. After reaching the appropriate height, the positioning bolt 24 can be screwed into the middle of the positioning hole 23 corresponding to the threaded hole at the upper end of the connecting seat 21 to complete the fixing of the adjusting seat 22.
[0025] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A safety protection device for a stake-cargo truck, comprising a stake-cargo truck (1), characterized in that: The upper end of the cargo van (1) is provided with two symmetrical sets of first protective components (2). The first protective component (2) includes a connecting seat (21) provided on the upper end of the cargo van (1). An adjusting seat (22) is sleeved on the upper end of the connecting seat (21). Two sets of sleeve plates (25) are provided on both ends of the outer wall of the adjusting seat (22). An adjusting plate (26) is inserted into the lower end of the sleeve plate (25). A first limiting sleeve (27) is provided on the upper end of the sleeve plate (25). A second protective component (3) is provided on the upper end of the sleeve plate (25). The second protective component (3) includes components fixedly mounted on the adjusting seat. (22) The upper fixed column (31) is fitted with two sets of rotating sleeves (32) on its outer wall. The outer walls of the two sets of rotating sleeves (32) are respectively provided with connecting frames (33) at their opposite ends. The upper and lower ends of the connecting frames (33) are respectively provided with a first protective frame (34) and a second protective frame (35). The upper end of the first protective frame (34) is provided with a second limiting sleeve (36), and the lower end of the second protective frame (35) is provided with a third limiting sleeve (37). The middle ends of the second limiting sleeve (36), the third limiting sleeve (37) and the first limiting sleeve (27) are all provided with limiting rods (5).
2. The safety protection device for a cargo van according to claim 1, characterized in that: The adjusting seat (22) is movably sleeved on the upper end of the outer wall of the connecting seat (21). The outer wall of the adjusting seat (22) has multiple sets of positioning holes (23). A positioning bolt (24) is threadedly inserted into the middle of one set of positioning holes (23). The upper outer wall of the connecting seat (21) has a threaded hole that matches the positioning bolt (24). The front end of the positioning bolt (24) is threadedly inserted into the threaded hole.
3. The safety protection device for a cargo van according to claim 1, characterized in that: The adjusting plate (26) is rotatably connected to the lower outer wall of the side near the connecting seat (21).
4. The safety protection device for a cargo van according to claim 1, characterized in that: The adjusting plate (26) is movably inserted into the inner wall of the sleeve plate (25). The outer walls at both ends of the adjusting plate (26) are provided with sliders, and the inner wall of the sleeve plate (25) is provided with a sliding groove that cooperates with the slider.
5. The safety protection device for a cargo van according to claim 1, characterized in that: The rotating sleeve (32) is rotatably mounted on the outer wall of the fixed column (31). The second protective frame (35) and the connecting frame (33) are fixedly connected. The lower outer wall of the first protective frame (34) near the connecting frame (33) is rotatably connected to the connecting frame (33).
6. The safety protection device for a cargo van according to claim 1, characterized in that: The limiting rod (5) moves through the middle of the second limiting sleeve (36), the third limiting sleeve (37), and the first limiting sleeve (27).
7. The safety protection device for a cargo van according to claim 6, characterized in that: The inner walls of the first protective frame (34) and the second protective frame (35) are both provided with a storage rack (4).