Cargo bed support structure, dump truck cargo bed, and dump truck

Abstract

The utility model discloses a kind of cargo compartment support structures, dump truck cargo compartment and dump truck, cargo compartment support structure includes top boundary beam, first side beam and bottom plate ring beam, the top end of multiple first side beams is connected with top boundary beam and along the extension direction of top boundary beam arrangement, the bottom end of multiple first side beams is connected with corresponding bottom plate ring beam respectively, first side beam and bottom plate ring beam are all I-beam, the cross-sectional shape of I-beam is "I" shape structure. By first side beam and bottom plate ring beam are all I-beam, have good bending and torsion resistance, improve strength while can save steel, to reduce cost. Moreover, first side beam and bottom plate ring beam form the closed annular frame of envelope, can evenly transfer load to the support structure of cargo compartment whole, avoid local stress concentration, improve the strength of cargo compartment side plate position.

Description

Technical Field

[0001] This utility model relates to the field of dump truck technology, and in particular to a cargo box support structure, a dump truck cargo box, and a dump truck. Background Technology

[0002] Dump trucks are vehicles that unload goods themselves using hydraulic or mechanical lifting; they are also known as tipper trucks. They consist of a truck chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off (PTO). Dump truck cargo boxes are available in two types: rear-tipping and side-tipping. The movement of a piston rod is controlled by a control system; rear-tipping is more common, as it tilts the cargo box by pushing the piston rod. In civil engineering, dump trucks are frequently used in conjunction with excavators, loaders, belt conveyors, and other construction machinery to form loading, transport, and unloading production lines for earthwork, sand, gravel, and bulk materials.

[0003] Currently, most of the large open-pit mines in my country use heavy-duty dump trucks with a load capacity between 100 and 330 tons when transporting cargo. During the frequent loading and unloading of materials, the bottom plate of the dump truck bed suffers the most severe impact and wear, and repairing it after wear is also time-consuming and labor-intensive.

[0004] Among them, the U-shaped cargo box is a common form of dump truck cargo box. Its U-shaped design makes it more structurally sound than traditional rectangular cargo boxes, offering advantages such as high unloading efficiency, strong structural strength, lightweight construction, and high load capacity. The side panel structure, as one of the core design elements of the U-shaped cargo box, directly affects the cargo box's load-bearing capacity, durability, and operational efficiency. Its technical characteristics mainly include the basic structural form, structural reinforcement, key connections, and optimization of materials and processes. During repeated loading, unloading, and transportation, if the material strength is insufficient or the structural design is unreasonable, the cargo box is prone to localized deformation or cracking due to metal fatigue.

[0005] Currently, structural reinforcement of the cargo box side panels mainly involves adding rectangular ribs and veneer panels. However, adding veneer panels to the side panels of dump truck cargo boxes does not significantly increase the strength of the side panels, making the cargo box prone to deformation and expansion during repeated loading, unloading, and transportation. Moreover, the method of adding rectangular ribs to the side panels of dump truck cargo boxes usually results in the entire cargo box having a rectangular rib structure. This method is mostly used for rectangular cargo boxes, leading to an overall heavier weight and increased cost. Utility Model Content

[0006] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a cargo box support structure, a dump truck cargo box, and a dump truck, so as to solve the problems of low cargo box strength, heavy overall weight, and high cost in the existing technology.

[0007] The objective of this utility model is achieved through the following technical solution: This utility model provides a cargo box support structure, including a top side beam, a first side beam, and a bottom plate ring beam. The top ends of multiple first side beams are connected to the top side beam and arranged along the extension direction of the top side beam. The bottom ends of multiple first side beams are each connected to the corresponding bottom plate ring beam. The first side beams and the bottom plate ring beams are all I-beams, and the cross-sectional shape of the I-beams is an "I" shape.

[0008] Furthermore, the cargo box support structure includes a second side beam and a third side beam. The top end of the second side beam is connected to the tail end of the top side beam, the top end of the third side beam is connected to the bottom end of the second side beam, and the bottom end of the third side beam is connected to the corresponding bottom plate ring beam. Both the second side beam and the third side beam are I-beams.

[0009] Furthermore, the second side beam is inclined toward the tail end of the top side beam and forms an obtuse angle with the top side beam.

[0010] Furthermore, the cargo box support structure includes a rear ring beam, the top of which is connected to the bottom of the second side beam, and the rear ring beam is the I-beam.

[0011] Furthermore, the top ends of both the first side beam and the second side beam are provided with edge plates, the shape of which matches the shape of the top side beam, and the top ends of both the first side beam and the second side beam are connected to the top side beam through the edge plates.

[0012] Furthermore, the top of the top edge beam is provided with a side support, which includes a side support bend and a reinforcing rib. The side support bend has an installation groove, and the reinforcing rib is disposed in the installation groove.

[0013] Furthermore, the I-beam includes a top horizontal plate, a stiffening plate, and a bottom horizontal plate. The top horizontal plate and the bottom horizontal plate are respectively located at opposite ends of the stiffening plate and are both perpendicular to the stiffening plate.

[0014] Furthermore, the bottom horizontal plate has multiple openings along its edge, and these openings are arranged along the extending direction of the bottom horizontal plate.

[0015] This application also provides a dump truck cargo box, including a cargo box panel and a cargo box support structure as described above, wherein the cargo box support structure is disposed on the outer wall of the cargo box panel.

[0016] This application also provides a dump truck, including the dump truck cargo box as described above.

[0017] The beneficial effects of this utility model are as follows: by using I-beams for both the first side beam and the bottom plate ring beam, it has good bending and torsional resistance, which can save steel and reduce costs while improving strength; moreover, the first side beam and the bottom plate ring beam form an enveloping closed ring frame, which can evenly transfer the load to the overall support structure of the cargo box, avoid local stress concentration, and improve the strength of the side plate of the cargo box. Attached Figure Description

[0018] Figure 1 This is a top-view three-dimensional structural diagram of the dump truck cargo box in this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the dump truck cargo box in this utility model, viewed from below.

[0020] Figure 3 This is a top-view three-dimensional structural diagram of the cargo box support structure in this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the I-beam in this utility model.

[0022] Figure 5 This is a top-view three-dimensional structural diagram of the side panel in this utility model.

[0023] In the figure: cargo box support structure 10, top side beam 11, first side beam 121, second side beam 122, third side beam 123, edge plate 124, bottom plate ring beam 13, rear ring beam 14, side side 15, side side curved plate 151, mounting groove 151a, reinforcing rib 152, spine beam 16, top horizontal plate 171, stiffening plate 172, bottom horizontal plate 173, opening 173a, cargo box plate 20, side plate 21, bottom plate 22, cargo box cap 30. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation methods, structures, features, and effects of the cargo box support structure, dump truck cargo box, and dump truck proposed according to this utility model: Figure 1 This is a top-view three-dimensional structural diagram of the dump truck cargo box in this utility model. Figure 2 This is a three-dimensional structural diagram of the dump truck cargo box in this utility model, viewed from below. Figure 3 This is a top-view three-dimensional structural diagram of the cargo box support structure in this utility model. Figure 4 This is a three-dimensional structural diagram of the I-beam in this utility model. Figure 5 This is a top-view three-dimensional structural diagram of the side panel in this utility model.

[0025] like Figures 1 to 5As shown, the present invention provides a cargo box support structure 10, including a top side beam 11, a first side beam 121 and a bottom plate ring beam 13. The top ends of multiple first side beams 121 are connected to the top side beam 11 and arranged along the extension direction (front and back direction) of the top side beam 11. The bottom ends of multiple first side beams 121 are each connected to the corresponding bottom plate ring beam 13. The first side beams 121 and the bottom plate ring beam 13 are all I-beams, and the cross-sectional shape of the I-beams is an "I" shape.

[0026] This utility model uses I-beams for both the first side beam 121 and the bottom plate ring beam 13, which have good bending and torsional resistance, improving strength while saving steel to reduce costs. Moreover, the first side beam 121 and the bottom plate ring beam 13 form an enveloping closed ring frame, which can evenly transfer the load to the overall support structure of the cargo box, avoid local stress concentration, and improve the strength of the side plate of the cargo box.

[0027] Optionally, the bottom ring beam 13 is generally U-shaped, meaning it extends from the left side of the cargo box along the bottom to the right side. The bottom ring beam 13 has an arc-shaped structure to suit commonly found U-shaped cargo boxes. Of course, in other embodiments, the bottom ring beam 13 can also be other shapes to suit other cargo box shapes; for example, it can also be a U-shaped structure to suit flat-bottomed cargo boxes.

[0028] Optionally, multiple first side beams 121 are arranged parallel to each other and form an acute angle with the top edge beam 11, and multiple bottom plate ring beams 13 are arranged parallel to each other along the extension direction (front-back direction) of the top edge beam 11. For example, there are six first side beams 121, with one first side beam 121 connected to the top of each of the left and right sides of three bottom plate ring beams 13, and a top edge beam 11 on each of the left and right sides of the cargo box support structure 10, with each top edge beam 11 connected to three first side beams 121.

[0029] Furthermore, the cargo box support structure 10 includes a second side beam 122 and a third side beam 123. The top end of the second side beam 122 is connected to the tail end of the top side beam 11, and the top end of the third side beam 123 is connected to the bottom end of the second side beam 122. The bottom end of the third side beam 123 is connected to the corresponding bottom plate ring beam 13. Both the second side beam 122 and the third side beam 123 are I-beams. For example, there are two of each of the second side beam 122 and the third side beam 123, located near the tail of the cargo box support structure 10. There are four bottom plate ring beams 13, with a third side beam 123 on each of the left and right sides of one of the bottom plate ring beams 13. By setting the second side beam 122 and the third side beam 123, a closed ring frame enveloping the bottom plate ring beam 13 is formed, thereby increasing the support strength at the tail of the cargo box support structure 10.

[0030] Optionally, the second side beam 122 is inclined toward the tail end of the top side beam 11 and the angle between the second side beam 122 and the top side beam 11 is an obtuse angle. That is, the second side beam 122 is inclined toward the tail of the cargo box support structure 10 to match the tail shape of the cargo box and provide better support for the tail of the cargo box.

[0031] Furthermore, the cargo box support structure 10 includes a rear ring beam 14, the top of which is connected to the bottom of a second side beam 122. The rear ring beam 14 is an I-beam. The rear ring beam 14 has an overall U-shaped structure, with the area near the top of the rear ring beam 14 bending towards and connecting to the second side beam 122 to match the rear shape of the cargo box. The cargo box support structure 10 is arranged parallel to the bottom ring beam 13, with a second side beam 122 connected to each of the left and right sides of the bottom ring beam 13, thereby further increasing the support strength at the rear of the cargo box support structure 10.

[0032] Furthermore, the top ends of both the first side beam 121 and the second side beam 122 are provided with edge plates 124. Figure 4 The shape of the edge plate 124 matches the shape of the top side beam 11. The top ends of the first side beam 121 and the second side beam 122 are connected to the top side beam 11 through the edge plate 124, thereby increasing the connection strength between the top side beam 11 and the first side beam 121 and the second side beam 122.

[0033] Furthermore, such as Figures 1-3 , Figure 5 As shown, the top of the top side beam 11 is provided with a side panel 15, which includes a side panel curved plate 151 and a reinforcing rib 152. The side panel curved plate 151 has a mounting groove 151a, and the reinforcing rib 152 is disposed in the mounting groove 151a. The side panel curved plate 151 has an inverted V-shaped structure, and the mounting groove 151a of the side panel curved plate 151 is set towards the top side beam 11, so that the side panel curved plate 151 is inverted and attached to the top of the top side beam 11, which provides good protection for the top side beam 11, prevents materials from damaging the welds when the cargo box is loaded, and avoids material accumulation at the top of the top side beam 11.

[0034] Furthermore, the cargo box support structure 10 includes a spine beam 16, the bottom of multiple bottom ring beams 13, and the bottom of the rear ring beam 14 are all connected to the spine beam 16. There are two spine beams 16 located at the bottom of the cargo box support structure 10, extending along the front-rear direction of the cargo box. The spine beam 16 connects to the hydraulic lifting mechanism and the chassis of the dump truck, supports the weight of the entire cargo box, and the area near the rear end of the spine beam 16 is rotatably connected to the chassis of the dump truck, driving the entire cargo box to tip over via the hydraulic lifting mechanism.

[0035] In this embodiment, as Figure 4The I-beam includes a top horizontal plate 171, a stiffening plate 172, and a bottom horizontal plate 173. The top horizontal plate 171 and the bottom horizontal plate 173 are respectively located at opposite ends of the stiffening plate 172 and are perpendicular to each other, thus forming an "I"-shaped cross-section (the cross-section perpendicular to the extension direction of the I-beam). Compared with traditional rectangular beams, the I-beam can save steel, reduce costs, and has good bending and torsional resistance. The bottom horizontal plate 173 is used to weld together with the outer wall of the cargo box 20.

[0036] Optionally, the bottom horizontal plate 173 has a plurality of openings 173a along its edge, and the plurality of openings 173a are arranged along the extending direction of the bottom horizontal plate 173. The openings 173a are in the shape of an "Ω" and the openings of the openings 173a face the edge of the bottom horizontal plate 173 to prevent weld tearing and reduce weight.

[0037] This application also provides a dump truck cargo box, including a cargo box panel 20 and a cargo box support structure 10 as described above, wherein the cargo box support structure 10 is disposed on the outer wall of the cargo box panel 20. Wherein, as... Figure 1 and Figure 2 As shown, the cargo box 20 includes side panels 21 and a bottom panel 22. A top edge beam 11 is provided on the top of the side panel 21 to increase the strength of the top of the side panel 21 and prevent materials from damaging the side panel 21 during loading. The first side beam 121, the second side beam 122, and the third side beam 123 are all provided on the outer side wall of the side panel 21, and the bottom plate ring beam 13 and the rear ring beam 14 are all provided on the outer side wall of the bottom plate 22. The bottom plate 22 has an overall U-shaped structure, which matches the shape of the bottom plate ring beam 13 and the rear ring beam 14.

[0038] Specifically, the first side beam 121, the second side beam 122, the third side beam 123, the bottom ring beam 13, and the rear ring beam 14 are all welded to the outer wall of the cargo box 20 via the bottom horizontal plate 173 of the I-beam. The bottom ring beam 13 is connected to the first side beam 121 and the third side beam 123 by lap welding of the top horizontal plate 171 and stiffening plate 172 of the I-beam. The third side beam 123 is connected to the rear ring beam 14 by lap welding of the top horizontal plate 171 and stiffening plate 172 of the I-beam. This allows for a certain amount of assembly error and reduces the difficulty of the process. To facilitate the butt joint of the stiffening plates, the first side beam 121, the second side beam 122, the third side beam 123, the bottom ring beam 13, and the rear ring beam 14 have bevels at their respective joint positions.

[0039] Furthermore, the dump truck cargo box also includes a cargo box cap 30, which is located at the front top of the cargo box support structure 10. The cargo box cap 30 is used to protect the safety of the cab and prevent materials from tipping towards the cab due to bumps during transportation, thus preventing safety accidents.

[0040] This application also provides a dump truck, including the dump truck cargo box as described above.

[0041] In this document, the directional terms such as up, down, left, right, front, and back are defined according to the position of the structures in the accompanying drawings and the relative positions of the structures, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein are only used for distinction in name and are not used to limit the number or order.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present utility model. These are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A cargo box support structure, characterized in that, It includes a top edge beam (11), a first side beam (121), and a bottom plate ring beam (13). The top ends of multiple first side beams (121) are connected to the top edge beam (11) and arranged along the extension direction of the top edge beam (11). The bottom ends of multiple first side beams (121) are each connected to the corresponding bottom plate ring beam (13). The first side beams (121) and the bottom plate ring beams (13) are all I-beams, and the cross-sectional shape of the I-beams is an "I" shape.

2. The cargo box support structure according to claim 1, characterized in that, The cargo box support structure (10) includes a second side beam (122) and a third side beam (123). The top end of the second side beam (122) is connected to the tail end of the top side beam (11). The top end of the third side beam (123) is connected to the bottom end of the second side beam (122). The bottom end of the third side beam (123) is connected to the corresponding bottom plate ring beam (13). Both the second side beam (122) and the third side beam (123) are I-beams.

3. The cargo box support structure according to claim 2, characterized in that, The second side beam (122) is inclined toward the tail end of the top side beam (11) and the angle between it and the top side beam (11) is obtuse.

4. The cargo box support structure according to claim 2, characterized in that, The cargo box support structure (10) includes a tail ring beam (14), the top of which is connected to the bottom of the second side beam (122), and the tail ring beam (14) is the I-beam.

5. The cargo box support structure according to claim 2, characterized in that, The top ends of the first side beam (121) and the second side beam (122) are provided with edge plates (124), the shape of the edge plates (124) matches the shape of the top side beam (11), and the top ends of the first side beam (121) and the second side beam (122) are connected to the top side beam (11) through the edge plates (124).

6. The cargo box support structure according to claim 1, characterized in that, The top of the top side beam (11) is provided with a side support (15), the side support (15) includes a side support bent plate (151) and a reinforcing rib (152), the side support bent plate (151) has an installation groove (151a), and the reinforcing rib (152) is disposed in the installation groove (151a).

7. The cargo box support structure according to any one of claims 1-6, characterized in that, The I-beam includes a top horizontal plate (171), a stiffening plate (172), and a bottom horizontal plate (173). The top horizontal plate (171) and the bottom horizontal plate (173) are respectively located at opposite ends of the stiffening plate (172) and are both perpendicular to the stiffening plate (172).

8. The cargo box support structure according to claim 7, characterized in that, The bottom horizontal plate (173) has a plurality of openings (173a) on its edge, and the plurality of openings (173a) are arranged along the extending direction of the bottom horizontal plate (173).

9. A dump truck cargo box, characterized in that, It includes a cargo box panel (20) and a cargo box support structure (10) as described in any one of claims 1-8, wherein the cargo box support structure (10) is disposed on the outer wall of the cargo box panel (20).

10. A dump truck, characterized in that, Includes the dump truck cargo box as described in claim 9.

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