Rear carriage plate of dump truck
By using high-strength steel plates to make the rear cargo box of the dump truck, and utilizing the frame, flat plate and supporting structure to form an eight-shaped design, the problem of heavy load deformation of the rear cargo box is solved, and the service life is extended and the transportation safety is improved.
Patent Information
- Application Number
- CN202422910726.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The rear cargo box of existing dump trucks is prone to deformation under heavy loads, which affects the service life of the cargo box and transportation safety, and may also make it impossible to open, reducing loading and unloading efficiency.
The rear panel structure, made of high-strength steel plates, includes a frame, flat panels, and vertical supports. It forms a figure-eight structure through horizontal, longitudinal, and diagonal supports, which enhances the overall rigidity and prevents deformation.
It effectively prevents the rear panel from deforming under heavy loads, extends its service life, improves transportation efficiency and safety, reduces maintenance costs, and significantly improves loading and unloading efficiency.
Smart Images

Figure CN223508162U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transportation vehicle technology, and in particular to a rear cargo box of a dump truck. Background Technology
[0002] In freight transportation, dump trucks are commonly used motor vehicles, consisting of a cab, drive structure, and dump box. The dump box is a crucial component of the dump truck, serving as the cargo container. It is formed by the front, side, and rear panels. The rear panel opens during unloading, requiring it to be robust, durable, and long-lasting. Therefore, the structure of the rear panel directly affects the vehicle's safety and loading / unloading efficiency. Existing rear panels suffer from structural problems, easily deforming under heavy loads. This not only affects the truck's lifespan and poses safety hazards but also prevents the panel from opening, further impacting loading and unloading efficiency. Therefore, improving and innovating the rear panel is a crucial technical issue that must be addressed. Utility Model Content
[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a rear box panel for dump trucks, which can effectively solve the problem that the rear box panels of existing dump trucks are prone to deformation under heavy loads, affecting the service life of the truck body and transportation safety.
[0004] This utility model discloses a rear cargo box for a dump truck, comprising a cargo box body. The cargo box body is an integral structure made of high-strength steel plate, with an upper part consisting of a frame 1 and a lower part consisting of a flat plate 2. The frame 1 and the flat plate 2 are firmly welded together with vertical supports 3 on the left and right sides to form an integral structure of the cargo box. The frame 1 is an integral structure consisting of several evenly distributed horizontal supports 4, which are vertically connected to adjacent longitudinal supports 5. Several supports 6 are provided on the flat plate 2, which are welded together with the flat plate and are inclined vertically. The supports 6 are arranged in an alternating V-shape.
[0005] This utility model has a novel and unique structure, a scientific and reasonable design, and is sturdy and durable. It can prevent the rear box from deforming under heavy loads, extend its service life, improve transportation efficiency and economy, and has significant economic and social benefits. Attached Figure Description
[0006] Figure 1 This is a front view of the overall structure of this utility model.
[0007] Figure 2 This is a side sectional view of the present invention. Detailed Implementation
[0008] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings and specific circumstances.
[0009] Depend on Figure 1-2 The present invention discloses a rear cargo box panel for a dump truck, comprising a rear cargo box body. The rear cargo box body is an integral structure made of high-strength steel plate, with an upper part being a frame 1 and a lower part being a flat panel 2. The frame 1 and the flat panel 2 are firmly welded together with vertical supports 3 on the left and right sides to form an integral structure of the rear cargo box panel. The frame 1 is an integral structure composed of several evenly distributed horizontal supports 4, which are vertically connected to adjacent longitudinal supports 5. Several supports 6 are provided on the flat panel 2, which are welded together with the flat panel and are inclined vertically. The supports 6 are arranged in an alternating V-shape.
[0010] To ensure effectiveness and ease of use, the high-strength steel plate is a steel plate with a yield strength ≥680MPa and an elongation of 18%-21%.
[0011] The horizontal support 4 and the longitudinal support 5 are both square hollow bodies with a wall thickness of 4.5mm made of high-strength steel.
[0012] The aforementioned support 6 is a figure-eight structure composed of alternating and symmetrical left and right diagonal reinforcing ribs (see...). Figure 1 As shown), the left and right spacing of the narrow end of the figure-eight shape is 100mm, and the tilt angle is 64°.
[0013] The upper outer side of the vertical supports 3 on the left and right sides is equipped with a connection structure 7 (known technology) to the left and right side panels 9 so that the rear panel can be opened for unloading.
[0014] The lower part of the vertical supports 3 on the left and right sides is provided with a locking structure that is opened or fixed together with the bottom plate 10 of the carriage (not shown in the figure, known technology).
[0015] The upper and lower ends of the planar plate 2 are bent into a hollow structure 8 with supporting ribs.
[0016] The frame 1 has a height of 700mm and a width of 2130mm, the flat plate 2 has a height of 800mm and a width of 2130mm, and the vertical support 3 has a height of 1500mm.
[0017] When in use, this utility model can replace the original rear box panel of a dump truck. Its working state is the same as the original rear box panel (known technology, not described in detail). This utility model has a novel and unique structure, is easy to manufacture, and is made of high-strength steel, which can effectively prevent deformation and expansion of the box when the truck is heavily loaded, thus extending its service life. The box body made of high-strength material has high hardness and strong corrosion resistance, which can effectively reduce vehicle cleaning and maintenance costs, improve the efficiency and economy of transporting goods. According to field tests, its service life can be extended by more than 5 years compared with the existing rear box panel, and it greatly improves the safety of loaded goods, resulting in significant economic and social benefits.
Claims
1. A rear cargo box for a dump truck, comprising a cargo box body, the cargo box body being an integral structure made of high-strength steel plate, the upper part being a frame (1) and the lower part being a flat plate (2), the frame (1) and the flat plate (2) being firmly welded together with vertical supports (3) on the left and right sides to form an integral structure of the cargo box; characterized in that, The frame (1) is an integral structure consisting of several evenly distributed horizontal supports (4) and vertically connected to adjacent longitudinal supports (5); several supports (6) are welded together with the flat plate (2) and are inclined vertically, and the supports (6) are arranged in a figure-eight shape.
2. The rear cargo box of the dump truck according to claim 1, characterized in that, The high-strength steel plate mentioned is a steel plate with a yield strength ≥680MPa and an elongation of 18%-21%.
3. The rear cargo box of the dump truck according to claim 1, characterized in that, The horizontal support (4) and the longitudinal support (5) are both square hollow bodies with a wall thickness of 4.5mm made of high-strength steel.
4. The rear cargo box of the dump truck according to claim 1, characterized in that, The support (6) is a figure-eight structure formed by alternating and symmetrical left and right oblique reinforcing ribs. The left and right spacing of the narrow end of the figure-eight is 100mm and the tilt angle is 64°.
5. The rear cargo box of the dump truck according to claim 1, characterized in that, The upper outer side of the vertical supports (3) on the left and right sides is equipped with a connection structure (7) to the left and right side panels (9) so that the rear panel can be opened for unloading.
6. The rear cargo box of the dump truck according to claim 1, characterized in that, The lower part of the vertical supports (3) on the left and right sides is provided with a locking structure that can be opened or fixed together with the bottom plate (10) of the carriage.
7. The rear cargo box of the dump truck according to claim 1, characterized in that, The upper and lower ends of the planar plate (2) are bent into a hollow structure (8) with supporting ribs.
8. The rear cargo box of the dump truck according to claim 1, characterized in that, The frame (1) is 700mm high and 2130mm wide, the flat plate (2) is 800mm high and 2130mm wide, and the vertical support (3) is 1500mm high.