Arc-shaped rear door structure of wide-body mining dump truck

Abstract

The utility model provides a kind of wide-body mining dump truck arc-shaped rear door structure, including door panel frame body, hinged car hopper, door panel frame body has installation cavity, installation cavity has two side wall surfaces opposite in horizontal direction;Arc-shaped door panel is set in installation cavity, arc-shaped door panel has two arc-shaped side edges respectively corresponding two side wall surfaces;Two reinforcing rib plates are provided, two reinforcing rib plates are respectively set on two side wall surfaces;Each reinforcing rib plate has arc-shaped end edge that can be adapted with corresponding arc-shaped side edge and is used for the fixed connection of corresponding arc-shaped side edge.The wide-body mining dump truck arc-shaped rear door structure door panel frame body provided by the utility model is hinged on car hopper, and the rear door is opened and closed, to realize unloading and blocking.Installation cavity provides mounting space for arc-shaped door panel and reinforcing rib plate.Arc-shaped door panel can disperse impact force to each part when being impacted by material, avoid stress concentration, thereby effectively reduce the opening welding, cracking caused by material beating rear door.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining dump trucks, specifically relating to an arc-shaped rear door structure for a wide-body mining dump truck. Background Technology

[0002] Wide-body mining dump trucks are large transport vehicles specifically designed for harsh working conditions such as mines. A dump truck is an engineering vehicle that unloads goods itself using hydraulic or mechanical lifting; also known as a tipper truck, a mining dump truck mainly consists of a chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off (PTO). The engine drives the hydraulic pump through the transmission and PTO. High-pressure oil enters the lifting hydraulic cylinder through the distribution valve and oil pipes, pushing the piston rod to tilt the cargo box. The cargo box then returns to its original position using its own weight and hydraulic control.

[0003] In existing technology, the rear door of a mining dump truck serves to prevent materials from tilting. Due to the frequent use of wide-body mining dump trucks, the rear door is opened frequently, and the material will slap against the rear door during unloading. The existing rear door structure is a frame structure, which is a rigid structure with a grid pattern formed by welding the frame, horizontal and vertical beams to the rear panel. However, due to the impact and slapping of the material during unloading, the rigid rear door structure has no buffer and is prone to weld breakage and cracking, resulting in poor adaptability and practicality. Utility Model Content

[0004] This utility model provides an arc-shaped rear door structure for a wide-body mining dump truck, which aims to solve the problem of poor practicality caused by welding defects and cracks in existing mining dump truck rear door structures.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an arc-shaped rear door structure for a wide-body mining dump truck, comprising: A door panel frame is hinged to the truck bed of a mining dump truck. The door panel frame has a mounting cavity with two horizontally opposite side walls. An arc-shaped door panel is disposed in the mounting cavity and fixedly connected to the door panel frame. The arc-shaped door panel has two arc-shaped sides that correspond to the two side walls respectively. Two reinforcing ribs are provided, and the two reinforcing ribs are respectively disposed on the two side wall surfaces; each reinforcing rib has an arc-shaped end edge that can be adapted to and fixedly connected to the corresponding arc-shaped side edge.

[0006] In one possible implementation, the door panel frame includes: Two connecting longitudinal beams are provided, and the two connecting longitudinal beams are horizontally spaced apart. Each connecting longitudinal beam is hinged to the truck bed of the mining dump truck. The hinge axis of each connecting longitudinal beam is horizontally set, and the hinge axes of the two connecting longitudinal beams are collinear. The two inner edges of the two connecting longitudinal beams that are close to each other are the two side wall surfaces. Two connecting beams are provided, which are horizontally spaced apart. Each connecting beam is arranged along the interval direction of the two connecting longitudinal beams. Both ends of each connecting beam are connected to the two connecting longitudinal beams. The two connecting beams and the two connecting longitudinal beams form a rectangular mounting cavity.

[0007] In one possible implementation, the door panel frame further includes four reinforcing corner plates, which are respectively disposed at the corners of the mounting cavity, and each reinforcing corner plate is connected to the corresponding connecting longitudinal beam and the corresponding connecting cross beam.

[0008] In one possible implementation, the door panel frame further includes two reinforcing plates, which are spaced apart along the interval direction of the two connecting crossbeams. The two reinforcing plates are arranged in a one-to-one correspondence with the two connecting longitudinal beams. Each reinforcing plate is provided with two protruding connecting ends, which extend toward the arc-shaped door panel and are located at the corner of the mounting cavity. Each reinforcing plate is connected to the corresponding connecting longitudinal beam and the two connecting crossbeams.

[0009] In one possible implementation, the arc-shaped door panel has two flat segments and one arc-shaped segment. The two flat segments are spaced apart at both ends of the arc-shaped segment. Each flat segment is fixedly connected to the corresponding connecting beam. The arc-shaped segment is located inside the mounting cavity, and the two sides of the arc-shaped segment are the two arc-shaped sides.

[0010] In one possible implementation, each of the connecting longitudinal beams is provided with a connecting concave surface, and each of the connecting concave surfaces abuts against the arc-shaped segment of the arc-shaped door panel.

[0011] In one possible implementation, the door panel frame further includes two reinforcing beams, each reinforcing beam being correspondingly arranged with each connecting beam, each reinforcing beam being arranged on the side wall of the corresponding connecting beam, and each reinforcing beam being connected to the corresponding reinforcing beam and the two connecting longitudinal beams respectively.

[0012] In one possible implementation, the reinforcing rib is arranged perpendicular to the connecting beam.

[0013] In one possible implementation, the connecting longitudinal beams and the connecting transverse beams are integrally welded together.

[0014] In one possible implementation, each of the reinforcing ribs is integrally welded to the door panel frame.

[0015] In this implementation, compared to existing technologies, the door panel frame is hinged to the truck bed, facilitating the opening and closing of the rear door for proper unloading and blocking of materials. The mounting cavity provides installation space for the curved door panel and reinforcing ribs, ensuring a rational layout of all components. When impacted by materials, the curved door panel disperses the impact force across its curved shape, preventing stress concentration and effectively reducing weld cracking and breakage caused by materials hitting the rear door. The reinforcing ribs strengthen the connection between the curved door panel and the door panel frame, allowing the curved door panel to be more firmly fixed to the door panel frame when subjected to impact, resulting in good adaptability and practicality. Attached Figure Description

[0016] Figure 1 A schematic diagram of the arc-shaped rear door structure of the wide-body mining dump truck provided in this embodiment of the utility model. Figure 1 ; Figure 2 A schematic diagram of the arc-shaped rear door structure of the wide-body mining dump truck provided in this embodiment of the utility model. Figure 2 ; Figure 3 A schematic diagram of the arc-shaped rear door structure of the wide-body mining dump truck provided in this embodiment of the utility model. Figure 3 ; Figure 4 A schematic diagram of the arc-shaped door panel and reinforcing ribs of the arc-shaped rear door structure of the wide-body mining dump truck provided in this embodiment of the utility model; Explanation of reference numerals in the attached figures: 10. Door panel frame; 11. Connecting longitudinal beam; 12. Connecting transverse beam; 13. Reinforcing corner plate; 14. Reinforcing plate; 15. Reinforcing transverse beam; 20. Curved door panel; 21. Flat section; 22. Curved section; 30. Reinforcing rib plate. Detailed Implementation

[0017] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a structure. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0021] Please refer to the following: Figures 1 to 4 The arc-shaped rear door structure of the wide-body mining dump truck provided by this utility model is described below. The arc-shaped rear door structure of the wide-body mining dump truck includes a door frame 10, an arc-shaped door panel 20, and reinforcing ribs 30. The door frame 10 is hinged to the dump truck bed and has a mounting cavity with two horizontally opposite sidewalls. The arc-shaped door panel 20 is disposed within the mounting cavity and fixedly connected to the door frame 10. The arc-shaped door panel 20 has two arc-shaped sides that correspond to the two sidewalls respectively. Two reinforcing ribs 30 are provided, each disposed on one of the two sidewalls. Each reinforcing rib 30 has an arc-shaped end edge that adapts to and is fixedly connected to the corresponding arc-shaped side.

[0022] The arc-shaped rear door structure of the wide-body mining dump truck provided in this embodiment, compared with the prior art, has the door panel frame 10 hinged to the truck bed, facilitating the opening and closing of the rear door to achieve normal unloading and blocking of materials. The mounting cavity provides installation space for the arc-shaped door panel 20 and the reinforcing rib plate 30, ensuring a reasonable layout of each component. When subjected to material impact, the arc-shaped door panel 20 can disperse the impact force to various parts of the arc, avoiding stress concentration, thereby effectively reducing weld cracking and breakage caused by materials hitting the rear door. The reinforcing rib plate 30 strengthens the connection between the arc-shaped door panel 20 and the door panel frame 10, allowing the arc-shaped door panel 20 to be more firmly fixed to the door panel frame 10 when subjected to impact, resulting in good adaptability and practicality.

[0023] In some embodiments, the door panel frame 10 may be adopted as follows: Figures 1 to 3 The structure shown. See also Figures 1 to 3 The door frame 10 includes two connecting longitudinal beams 11 and two connecting transverse beams 12. Two connecting longitudinal beams 11 are provided, horizontally spaced apart. Each connecting longitudinal beam 11 is hinged to the truck bed of a mining dump truck. The hinge axes of each connecting longitudinal beam 11 are horizontally aligned, and the hinge axes of the two connecting longitudinal beams 11 are collinear. The two inner edges of the two connecting longitudinal beams 11 are adjacent to each other and form two side walls. Two connecting transverse beams 12 are provided, horizontally spaced apart. Each connecting transverse beam 12 is positioned along the interval direction of the two connecting longitudinal beams 11. Both ends of each connecting transverse beam 12 are connected to the two connecting longitudinal beams 11. The two connecting transverse beams 12 and the two connecting longitudinal beams 11 form a rectangular mounting cavity.

[0024] Two horizontally spaced, hinged longitudinal beams 11 provide stable support and a hinged base for the rear door. The hinge axes are horizontal and collinear, ensuring smoothness and consistency during the opening and closing of the rear door. Two connecting crossbeams 12 and the connecting longitudinal beams 11 form a rectangular mounting cavity, resulting in a more uniform force distribution on the door frame 10 and better resistance to impacts transmitted from the curved door panel 20. The rectangular mounting cavity structure is simple, easy to manufacture, and helps reduce production costs.

[0025] Both the connecting longitudinal beam 11 and the connecting transverse beam 12 can be equipped with supporting uprights. These supporting uprights are engineering components that improve the structural rigidity, stability, and load-bearing capacity of the uprights. An upright typically refers to a flat plate perpendicular to the direction of force application.

[0026] In some embodiments, the door panel frame 10 may be adopted as follows: Figure 1 , Figure 3 The structure shown. See also Figure 1 , Figure 3The door frame 10 also includes four reinforcing corner plates 13, which are respectively located at the corners of the mounting cavity. Each reinforcing corner plate is connected to the corresponding connecting longitudinal beam 11 and the corresponding connecting transverse beam 12.

[0027] Four reinforcing corner plates 13 are installed at the corners of the mounting cavity, connecting the corresponding connecting longitudinal beams 11 and connecting transverse beams 12. When the rear door is impacted by materials, the corners of the mounting cavity are areas of concentrated stress. The reinforcing corner plates 13 effectively enhance the strength and rigidity of these areas, disperse stress, and prevent deformation and cracking at the corners. Through the reinforcement effect of the reinforcing corner plates 13, the overall structural strength and stability of the door frame 10 are improved, allowing the rear door to maintain good structural integrity even when subjected to large impact forces, thereby improving the service life and reliability of the rear door. The reinforcing corner plates 13 also enhance the torsional resistance of the door frame 10, enabling it to remain stable under stress in different directions and better adapt to the complex and changing working conditions during mine transportation.

[0028] In some embodiments, the door panel frame 10 may be adopted as follows: Figure 1 , Figure 3 The structure shown. See also Figure 1 , Figure 3 The door frame 10 also includes two reinforcing plates 14. The two reinforcing plates 14 are spaced apart along the interval direction of the two connecting crossbeams 12. The two reinforcing plates 14 are corresponding to the two connecting longitudinal beams 11. Each reinforcing plate 14 is provided with two protruding connecting ends. Each protruding connecting end extends toward the arc-shaped door panel 20. Each protruding connecting end is located at the corner of the mounting cavity. Each reinforcing plate 14 is connected to the corresponding connecting longitudinal beam 11 and the two connecting crossbeams 12.

[0029] Two reinforcing plates 14 are connected to the connecting longitudinal beam 11 and the connecting transverse beam 12 via their extended connecting ends, which are located at the corners of the mounting cavity. This design strengthens the structural strength of the corners of the mounting cavity and, together with the reinforcing corner plate 13, forms a more robust reinforcement system. The reinforcing plates 14 not only enhance the load-bearing capacity of the door frame 10 at the corners but also adjust the stress distribution of the door frame 10 to a certain extent, making the stress on the entire door frame 10 more uniform. When the rear door is impacted by materials, the reinforcing plates 14 effectively transfer the impact force to the entire door frame 10 structure, preventing excessive local stress and damage, thereby improving the reliability and stability of the rear door structure, extending the service life of the rear door, and reducing maintenance costs.

[0030] In some embodiments, the aforementioned curved door panel 20 may adopt the following... Figure 4 The structure shown. See also Figure 4The curved door panel 20 has two flat sections 21 and one curved section 22. The two flat sections 21 are spaced apart at both ends of the curved section 22. Each flat section 21 is fixedly connected to the corresponding connecting beam 12. The curved section 22 is located in the mounting cavity, and the two sides of the curved section 22 are two curved sides.

[0031] The two flat sections 21 of the curved door panel 20 are fixedly connected to the connecting beam 12, providing a stable installation foundation for the curved door panel 20 and ensuring the connection strength between the curved door panel 20 and the door frame 10. The middle curved section 22 is located within the installation cavity. During unloading, the curved section 22 can fully utilize its curved structure to effectively disperse the impact force of the material and avoid stress concentration in a certain area. This better withstands the impact of materials, improving the impact resistance and service life of the rear door. The combination of the flat section 21 and the curved section 22 also facilitates the connection between the curved door panel 20 and the connecting beam 12.

[0032] In some embodiments, the connecting longitudinal beam 11 may be adopted as follows: Figure 1 , Figure 3 The structure shown. See also Figure 1 , Figure 3 Each connecting longitudinal beam 11 is provided with a connecting concave surface, and each connecting concave surface abuts against the arc-shaped segment 22 of the arc-shaped door panel 20.

[0033] The connecting concave surface on the connecting longitudinal beam 11 abuts against the arc-shaped segment 22 of the arc-shaped door panel 20. This design enhances the tightness and stability of the connection between the connecting longitudinal beam 11 and the arc-shaped door panel 20. When the rear door is impacted by materials, the connecting concave surface can better transmit the impact force borne by the arc-shaped door panel 20, forming a more robust integral structure between the connecting longitudinal beam 11 and the arc-shaped door panel 20 to jointly resist the impact of materials. The setting of the connecting concave surface can also reduce the gap between the arc-shaped door panel 20 and the connecting longitudinal beam 11, avoiding vibration and abnormal noise caused by excessive gaps, and improving the smoothness of the rear door operation.

[0034] In some embodiments, the door panel frame 10 may be adopted as follows: Figures 1 to 3 The structure shown. See also Figures 1 to 3 The door frame 10 also includes two reinforcing beams 15, each reinforcing beam 15 being correspondingly provided with each connecting beam 12, each reinforcing beam 15 being provided on the side wall of the corresponding connecting beam 12, and each reinforcing beam 15 being connected to the corresponding reinforcing beam and the two connecting longitudinal beams 11 respectively.

[0035] Two reinforcing beams 15 connect to corresponding connecting beams 12 and two connecting longitudinal beams 11, respectively, enhancing the lateral strength and rigidity of the door frame 10. When the rear door is impacted by materials, the reinforcing beams 15 effectively disperse the impact force borne by the connecting beams 12, preventing the connecting beams 12 from deforming or being damaged due to excessive stress. Through the synergistic effect of the reinforcing beams 15, connecting longitudinal beams 11, and connecting beams 12, the overall structure of the door frame 10 is made more robust, better able to withstand the frequent material impacts and vibrations during mine transportation.

[0036] In some embodiments, the aforementioned reinforcing rib 30 may be adopted as follows: Figure 2 , Figure 4 The structure shown. See also Figure 2 , Figure 4 The reinforcing rib 30 is set perpendicular to the connecting beam 12.

[0037] The reinforcing rib 30 is positioned perpendicular to the connecting beam 12, allowing it to better fulfill its reinforcing function. When the rear door is impacted by materials, the vertically positioned reinforcing rib 30 effectively transfers the impact force borne by the curved door panel 20 to the connecting beam 12 and the connecting longitudinal beam 11, ensuring that the entire door frame 10 structure shares the impact force and preventing the curved door panel 20 from being damaged due to excessive stress alone. The vertical positioning of the reinforcing rib 30 facilitates its installation and manufacturing, improves production efficiency, reduces production costs, and demonstrates good practicality.

[0038] In some embodiments, the connecting longitudinal beam 11 may be adopted as follows: Figures 1 to 3 The structure shown. See also Figures 1 to 3 Each connecting longitudinal beam 11 and each connecting transverse beam 12 are integrally welded together.

[0039] Each connecting longitudinal beam 11 and each connecting transverse beam 12 is integrally welded together. This manufacturing process can improve the overall strength and rigidity of the door panel frame 10. Integral welding can also improve production efficiency, reduce assembly steps, and lower production costs.

[0040] In some embodiments, the aforementioned reinforcing rib 30 may be adopted as follows: Figure 2 , Figure 4 The structure shown. See also Figure 2 , Figure 4 Each reinforcing rib 30 is integrally welded to the door panel frame 10.

[0041] Each reinforcing rib 30 is integrally welded to the door panel frame 10, enhancing the connection strength and integrity between the reinforcing rib 30 and the door panel frame 10. When the rear door is impacted by materials, the integrally welded structure allows the reinforcing rib 30 to work better with the door panel frame 10 to jointly withstand the impact force, preventing the reinforcing rib 30 from loosening or falling off from the door panel frame 10.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An arc-shaped rear door structure for a wide-body mining dump truck, characterized in that: include: A door panel frame is hinged to the truck bed of a mining dump truck. The door panel frame has a mounting cavity with two horizontally opposite side walls. An arc-shaped door panel is disposed in the mounting cavity and fixedly connected to the door panel frame. The arc-shaped door panel has two arc-shaped sides that correspond to the two side walls respectively. Two reinforcing ribs are provided, and the two reinforcing ribs are respectively disposed on the two side wall surfaces; each reinforcing rib has an arc-shaped end edge that can be adapted to and fixedly connected to the corresponding arc-shaped side edge.

2. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 1, characterized in that, The door panel frame includes: Two connecting longitudinal beams are provided, and the two connecting longitudinal beams are horizontally spaced apart. Each connecting longitudinal beam is hinged to the truck bed of the mining dump truck. The hinge axis of each connecting longitudinal beam is horizontally set, and the hinge axes of the two connecting longitudinal beams are collinear. The two inner edges of the two connecting longitudinal beams that are close to each other are the two side wall surfaces. Two connecting beams are provided, which are horizontally spaced apart. Each connecting beam is arranged along the interval direction of the two connecting longitudinal beams. Both ends of each connecting beam are connected to the two connecting longitudinal beams. The two connecting beams and the two connecting longitudinal beams form a rectangular mounting cavity.

3. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 2, characterized in that, The door panel frame also includes four reinforcing corner plates, which are respectively disposed at the corners of the mounting cavity. Each reinforcing corner plate is connected to the corresponding connecting longitudinal beam and the corresponding connecting transverse beam.

4. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 2, characterized in that, The door panel frame also includes two reinforcing plates, which are spaced apart along the interval direction of the two connecting crossbeams. The two reinforcing plates are arranged one-to-one with the two connecting longitudinal beams. Each reinforcing plate is provided with two protruding connecting ends, which extend toward the arc-shaped door panel and are located at the corner of the mounting cavity. Each reinforcing plate is connected to the corresponding connecting longitudinal beam and the two connecting crossbeams.

5. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 2, characterized in that, The arc-shaped door panel has two flat sections and one arc-shaped section. The two flat sections are spaced apart at both ends of the arc-shaped section. Each flat section is fixedly connected to the corresponding connecting beam. The arc-shaped section is located inside the mounting cavity, and the two sides of the arc-shaped section are the two arc-shaped sides.

6. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 5, characterized in that, Each of the connecting longitudinal beams is provided with a connecting concave surface, and each of the connecting concave surfaces abuts against the arc-shaped segment of the arc-shaped door panel.

7. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 2, characterized in that, The door panel frame also includes two reinforcing beams, each reinforcing beam being correspondingly arranged with each connecting beam. Each reinforcing beam is arranged on the side wall of the corresponding connecting beam, and each reinforcing beam is connected to the corresponding reinforcing beam and the two connecting longitudinal beams.

8. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 2, characterized in that, The reinforcing rib is arranged perpendicular to the connecting beam.

9. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 2, characterized in that, Each of the connecting longitudinal beams and each of the connecting transverse beams is integrally welded together.

10. The arc-shaped rear door structure of the wide-body mining dump truck as described in claim 1, characterized in that, Each of the reinforcing ribs is integrally welded to the door panel frame.

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