A dump truck cargo bed and dump truck

Abstract

The application discloses a dump truck cargo compartment, which comprises a semi-closed structure formed by a bottom plate, a front plate and two side plates, wherein the top end of the front plate extends in a direction away from the bottom plate to form a brim; the middle area of the bottom plate, the middle area of the front plate and the middle area of the brim are respectively provided with a first raised structure, a second raised structure and a third raised structure, and the first raised structure, the second raised structure and the third raised structure continuously extend along the central axis direction of the dump truck cargo compartment and are connected with each other. The raised structures can effectively improve the stress concentration phenomenon in the middle area of the cargo compartment and improve the bearing capacity and deformation resistance of the bottom plate and the front plate when loading minerals. The application further discloses a dump truck comprising the above cargo compartment.

Description

Technical Field

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

[0002] Mining dump trucks are core equipment in the transportation process of open-pit mines, and their cargo boxes, as large structural components for loading and carrying minerals, are the key parts of the entire vehicle. To improve mining and transportation efficiency, large mining dump trucks have become the main transportation tool in mining areas. With the development of mining equipment towards intelligence, greening, and high reliability, optimizing the structure of the cargo box has become an important aspect of improving the overall performance of mining dump trucks.

[0003] Currently, the cargo box structures of mining dump trucks both domestically and internationally are mainly rectangular and U-shaped, typically with channel beams welded to the floor, side, and front plates to enhance strength and rigidity. While this structure can meet usage requirements to some extent, minerals tend to accumulate in the middle of the cargo box during transportation, leading to stress concentration on the floor and making it prone to localized deformation. Furthermore, the existing lightweight cargo box floor plates have limited thickness, often requiring the welding of lining plates to the inner walls to improve wear resistance. However, these lining plates not only increase maintenance costs but are also prone to detachment.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a dump truck cargo box that can improve the problems of insufficient load-bearing capacity and stress concentration in the transportation of minerals.

[0006] This utility model provides a dump truck cargo box, including a semi-enclosed structure formed by a bottom plate, a front plate and two side plates. The top of the front plate extends away from the bottom plate to form a brim. The middle area of ​​the bottom plate, the middle area of ​​the front plate and the middle area of ​​the brim are respectively formed with a first raised structure, a second raised structure and a third raised structure. The first raised structure, the second raised structure and the third raised structure extend continuously along the central axis of the dump truck cargo box and are connected to each other.

[0007] In one embodiment, both the base plate and the front plate have a gradually increasing thickness. The thickness of the base plate gradually increases from one end near the front plate to the other end and from both sides towards the center. The thickness of the front plate gradually increases from one end towards the end near the base plate.

[0008] In one embodiment, the two side plates are symmetrically installed on opposite sides of the base plate, with an included angle of 1° to 2° between the two side plates, forming a tapered structure that is wider at the front and narrower at the back on the base plate.

[0009] In one embodiment, the dump truck cargo box further includes a brim protection beam symmetrically arranged on both sides of the brim, a side plate reinforcing beam symmetrically arranged on both side plates, and a rear reinforcing beam arranged on the bottom plate at the end away from the front plate.

[0010] In one embodiment, one end of the side plate reinforcing beam is connected to the brim protection beam, and the other end is connected to the tail reinforcing beam, forming a continuous reinforcing structure at the edge of the semi-enclosed structure.

[0011] In one embodiment, the dump truck cargo box further includes two side plate anti-collision beams connected to the side plate reinforcing beams, and the two side plate anti-collision beams are respectively connected to the two side plates.

[0012] In one embodiment, a plurality of first longitudinal reinforcing beams and second longitudinal reinforcing beams are symmetrically arranged on the outside of the base plate, and a plurality of first transverse reinforcing beams are arranged on the outside of the base plate and the two side plates. The plurality of first longitudinal reinforcing beams and the plurality of second longitudinal reinforcing beams are cross-connected with the plurality of first transverse reinforcing beams; wherein, the plurality of first longitudinal reinforcing beams and the plurality of second longitudinal reinforcing beams are arranged in parallel.

[0013] In one embodiment, the front panel is provided with a plurality of second transverse reinforcing beams on its exterior, and the brim is provided with a plurality of third longitudinal reinforcing beams on its exterior. The plurality of second transverse reinforcing beams are cross-connected with the plurality of second longitudinal reinforcing beams, and the plurality of third longitudinal reinforcing beams are cross-connected with the plurality of third longitudinal reinforcing beams.

[0014] In one embodiment, an arc-shaped transition structure is provided between the bottom plate and the front plate and the two side plates. The bottom plate and the front plate are connected by a transition plate, and the included angle between the transition plate and the bottom plate and the front plate is an obtuse angle.

[0015] In one embodiment, a plurality of connecting plates are provided between the brim and the front panel.

[0016] This utility model also provides a dump truck, including a dump truck cargo box as described in the above embodiments.

[0017] The present invention provides a dump truck cargo box, which, through the first raised structure in the middle of the bottom plate and the second and third raised structures connected thereto, can effectively improve the stress concentration phenomenon in the middle of the cargo box and improve the load-bearing capacity and deformation resistance of the bottom plate and the front plate when loading minerals. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall structural diagram of the dump truck cargo box provided in a preferred embodiment of the present invention.

[0020] Figure 2 A bottom view of the dump truck cargo box provided in a preferred embodiment of this utility model.

[0021] Figure 3 A side view of the dump truck cargo box provided in a preferred embodiment of this utility model.

[0022] Figure 4 This is a partial structural schematic diagram of the dump truck cargo box provided in a preferred embodiment of the present invention.

[0023] Figure 5 This is a structural schematic diagram of the bottom plate and front plate of the dump truck cargo box provided in a preferred embodiment of the present invention. Detailed Implementation

[0024] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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.

[0027] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0028] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0029] Please refer to Figures 1 to 2 This utility model provides a dump truck cargo box, comprising a semi-enclosed structure formed by a bottom plate 1, a front plate 3, and two side plates. The side plates include a symmetrically arranged left side plate 6 and a right side plate 2. The top of the front plate 3 extends away from the bottom plate 1 to form a brim 4. The bottom plate 1 has a first raised structure 101, which protrudes upward from the middle of the bottom plate 1 and is continuously arranged along the length of the bottom plate 1. This allows the bottom plate 1 to better distribute and transfer concentrated loads when loading minerals, thereby improving the overall load-bearing capacity and deformation resistance of the central area. The front plate 3 and the brim 4 respectively have a second raised structure 301 and a third raised structure 401 connected to the first raised structure 101. The front plate 3, the brim 4, and the raised structure in the middle of the bottom plate 1 form a continuous overall reinforcing frame, enabling the cargo box to form a more uniform force path during loading and unloading, significantly improving the structural strength of the front and upper parts of the cargo box, and reducing local deformation caused by mineral impact.

[0030] The bottom plate 1 is connected to the left side plate 6 and the right side plate 2 by an arc-shaped transition structure, which avoids stress concentration at traditional right-angle connections and improves the flowability of minerals within the cargo compartment, making unloading smoother. The bottom plate 1 and the front plate 3 are connected by a transition plate 9, with obtuse angles between the transition plate 9 and both the bottom plate 1 and the front plate 3. This obtuse-angle transition structure reduces mineral retention and adhesion at the junction of the bottom plate 1 and the front plate 3, lowers unloading resistance, improves unloading efficiency, and enhances the load-bearing reliability of the connection between the bottom plate 1 and the front plate 3.

[0031] In this embodiment, the base plate 1 adopts a gradually increasing thickness structure, with its thickness gradually increasing from the end furthest from the front plate 3 to the end closest to the front plate 3. This accommodates the load-bearing characteristics of materials accumulating in the area near the front plate 3, thereby enhancing the load-bearing capacity and impact resistance of the front part of the base plate 1. Simultaneously, the thickness of the base plate 1 also gradually increases from both sides towards the center, forming a structure that is thicker in the center and thinner at the edges. This allows the base plate 1 to better resist concentrated stress in the central region, further improving its bending and wear resistance under load. The front plate 3 also adopts a gradually increasing thickness structure, with its thickness gradually increasing from the end furthest from the base plate 1 to the end closest to the base plate 1. Since the minerals exert a strong impact on the lower part of the front plate 3 during unloading and accumulation, this structure enables the lower part of the front plate 3 to possess higher strength and durability, effectively preventing deformation or damage to the front plate 3 under long-term impact loads.

[0032] In this embodiment, based on the different degrees of wear of the minerals inside the cargo compartment, the wear level in the rear of the compartment is greater than that in the front and sides. Therefore, plates of different thicknesses are arranged alternately, with thicker plates placed in areas of greater wear and thinner plates placed in areas of less wear. Specifically, as follows... Figure 5 As shown, the base plate 1 consists of a front center base plate 102, a rear center base plate 103, two side front base plates 105, two side middle base plates 104, and two side rear base plates 106. The front plate 3 consists of an upper front plate 303 and a lower front plate 302. The two side rear base plates 106 are arranged on both sides of the rear center base plate 103, and the thickness of the rear center base plate 103 is greater than that of the side rear base plates 106; the front center base plate 102 is arranged in front of the rear center base plate 103, and the thickness of the rear center base plate 103 is greater than that of the front center base plate 102; the two side front base plates 105 and the two side middle base plates 104 are arranged on both sides of the front center base plate 102, and the thickness of the front center base plate 102 is greater than that of the side front base plates 105 and the side middle base plates 104; the two side front base plates 105 are arranged in front of the side middle base plates 104, and the thickness of the side middle base plates 104 is greater than that of the side front base plates 105. The upper front panel 303 is positioned above the lower front panel 11, and the thickness of the lower front panel 302 is greater than that of the upper front panel 303. The various panels of the cargo box are staggered and their joints are separated. Compared with the traditional cargo box panel arrangement, this new structural form reduces the weight of the cargo box and increases its wear resistance, greatly reducing the frequency of replacing the wear-resistant liners after the cargo box is removed from the machine.

[0033] Furthermore, the left side panel 6 and the right side panel 2 are symmetrically installed on opposite sides of the bottom plate 1. Both side panels adopt a gradually increasing width structure, with the width gradually increasing from the end of the bottom plate 1 away from the front plate 3 to the end closer to the front plate 3. This provides the entire cargo box with greater lateral expansion space in the area near the front plate 3, accommodating the characteristic of materials gradually concentrating towards the front during transportation and stacking, thereby improving the load-bearing capacity of the front area. The left side panel 6 and the right side panel 2 have an included angle of 1° to 2°, forming a tapered structure that is wider at the front and narrower at the back on the bottom plate 1. This structure, on the one hand, guides the material to slide more smoothly backward during unloading, reducing material residue and retention at the front or sides of the box; on the other hand, it also reduces localized stress concentration on the side panels when subjected to mineral impact, improving the overall uniformity of stress distribution.

[0034] like Figure 1 and 3 As shown, protective beams 5 are symmetrically installed on both sides of the brim 4. The two protective beams 5 form a stable connection structure with the brim 4, which can effectively enhance the stiffness and deformation resistance of the brim 4 under load impact, thus providing protection and support for the upper part of the front plate 3. Side plate reinforcing beams 7 are respectively provided on the outer side of the left side plate 6 and the right side plate 2. The side plate reinforcing beams 7 are arranged longitudinally, which makes the left side plate 6 and the right side plate 2 have stronger bending and impact resistance when subjected to mineral impact, and prevents the side plates from deforming due to excessive local impact. A tail reinforcing beam 10 is also provided at the end of the bottom plate 1 away from the front plate 3. The tail reinforcing beam 10 is laterally connected to the tail end of the bottom plate 1, which can effectively improve the overall stiffness of the tail of the bottom plate 1 and prevent fatigue damage to the tail end due to repeated impact during unloading.

[0035] By combining the above-mentioned brim protection beam 5, side plate reinforcing beam 7 and tail reinforcing beam 10, targeted reinforcements are formed at the brim 4, the two side plates and the tail end of the bottom plate 1, so that the overall structural strength and durability of the cargo box are significantly improved when subjected to concentrated mineral impact or long-term load, effectively extending the service life of the cargo box.

[0036] Optionally, one end of the side plate reinforcing beam 7 is fixedly connected to the brim protection beam 5, and the other end is fixedly connected to the tail reinforcing beam 10. The three together form a continuous reinforcing structure at the edge of the cargo compartment. This continuous reinforcing structure can form a complete closed loop of force at the edge of the cargo compartment, so that the force on the brim 4, the side plates, and the tail end of the bottom plate 1 can be effectively transferred and evenly distributed. Specifically, the impact load generated by the minerals during loading and unloading will not be concentrated in a certain local area, but can be transmitted along the continuous reinforcing structure to the entire edge of the cargo compartment, thereby avoiding the problem of local stress concentration.

[0037] Optionally, side plate anti-collision beams 8 are connected to both side plate reinforcing beams 7. The two side plate anti-collision beams 8 are connected to the left side plate 6 and the right side plate 2 respectively, forming an integral frame structure, so that the left side plate 6 and the right side plate 2 have higher impact resistance and compression resistance when subjected to the impact of falling minerals.

[0038] Specifically, during the loading process, large pieces of ore often directly impact the left side plate 6 and the right side plate 2, causing local deformation of the plate surface. By setting the side plate anti-collision beam 8, the impact force can be effectively dispersed and transferred to the side plate reinforcing beam 7, thereby avoiding bulging or cracking of the side plate.

[0039] In addition, the side panel anti-collision beam 8 forms a reliable support and constraint relationship with the left side panel 6 and the right side panel 2, which can stably maintain the structural shape of the side panel under the cyclical working conditions of frequent loading and unloading of minerals, further improving the durability and safety of the cargo box.

[0040] Furthermore, such as Figure 1 and 4 Multiple first longitudinal reinforcing beams 11 and second longitudinal reinforcing beams 12 are symmetrically arranged on the outside of the base plate 1. These beams are parallel to each other and extend longitudinally along the base plate 1, forming a longitudinal support frame. Simultaneously, multiple first transverse reinforcing beams 13 are arranged on the outside of the base plate 1, the left side plate 6, and the right side plate 2. These beams are arranged transversely and fixed to the outer surface of the base plate 1 and the two side plates in a circumferential structure. The multiple first longitudinal reinforcing beams 11 and the multiple second longitudinal reinforcing beams 12 are welded to the first transverse reinforcing beams 13 at their intersections, forming a crisscrossing grid-like reinforcement structure. This crisscrossing reinforcement structure can quickly disperse the impact force and static pressure to the entire cargo box outer frame when the base plate 1 and the two side plates are subjected to concentrated mineral loads, thereby effectively reducing the risk of single-point stress concentration and enhancing the overall bending and torsional resistance of the base plate 1 and the two side plates.

[0041] Specifically, multiple second transverse reinforcing beams 14 are provided on the outside of the front panel 3. The second transverse reinforcing beams 14 are arranged transversely and fixedly connected to the surface of the front panel 3. Multiple third longitudinal reinforcing beams 15 are provided on the outside of the brim 4. The third longitudinal reinforcing beams 15 are arranged longitudinally and fixedly connected to the surface of the brim 4. The second transverse reinforcing beams 14 and the second longitudinal reinforcing beams 12 are welded and fixed at their intersections to form a longitudinal and transverse reinforcement node. The third longitudinal reinforcing beams 15 and the second transverse reinforcing beams 14 are welded and fixed at their intersections to further form a continuous spatial reinforcement system between the front panel 3 and the brim 4.

[0042] Through this reinforcement system, when the front plate 3 is subjected to the impact of mineral loading, its load can be transferred through the second transverse reinforcing beam 14 to the second longitudinal reinforcing beam 12, and then further diffused to the bottom plate 1; at the same time, when the brim 4 is subjected to the bending load caused by mineral impact and external forces, its stress can be transmitted along the third longitudinal reinforcing beam 15 to the second transverse reinforcing beam 14 and dispersed to the front plate 3.

[0043] Optionally, multiple connecting plates 16 are provided between the brim 4 and the front panel 3. The connecting plates 16 are arranged at intervals in the lateral direction and are firmly welded to the brim 4 and the front panel 3 respectively. These connecting plates 16 can form multi-point support between the brim 4 and the front panel 3, so that the two can achieve overall stress and coordinated deformation when bearing load, thereby effectively avoiding cracking or failure at the connection due to uneven local stress.

[0044] This utility model embodiment also provides a dump truck, including a dump truck cargo box as described in the above embodiment.

[0045] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A dump truck cargo box, characterized in that, The structure includes a semi-enclosed structure formed by a bottom plate (1), a front plate (3), and two side plates (2,6). The top of the front plate (3) extends away from the bottom plate (1) to form a brim (4). The middle area of ​​the bottom plate (1), the middle area of ​​the front plate (3), and the middle area of ​​the brim (4) are respectively formed with a first raised structure (101), a second raised structure (301), and a third raised structure (401). The first raised structure (101), the second raised structure (301), and the third raised structure (401) extend continuously along the central axis of the dump truck cargo box and are connected to each other.

2. The dump truck cargo box as described in claim 1, characterized in that, Both the base plate (1) and the front plate (3) have a gradually increasing thickness. The thickness of the base plate (1) gradually increases from one end near the front plate (3) to the other end, and gradually increases from both sides to the middle. The thickness of the front plate (3) gradually increases from one end to the end near the base plate (1).

3. The dump truck cargo box as described in claim 2, characterized in that, The two side plates (2,6) are symmetrically installed on opposite sides of the base plate (1), and the two side plates (2,6) have an included angle of 1° to 2°, forming a tapered structure that is wider at the front and narrower at the back on the base plate (1).

4. The dump truck cargo box as described in claim 2, characterized in that, The dump truck cargo box also includes a brim protection beam (5) symmetrically arranged on both sides of the brim (4), a side plate reinforcing beam (7) symmetrically arranged on the side plates (2,6), and a tail reinforcing beam (10) arranged on the bottom plate (1) away from the front plate (3).

5. The dump truck cargo box as described in claim 4, characterized in that, One end of the side plate reinforcing beam (7) is connected to the brim protection beam (5), and the other end is connected to the tail reinforcing beam (10), forming a continuous reinforcing structure at the edge of the semi-enclosed structure.

6. The dump truck cargo box as described in claim 5, characterized in that, The dump truck cargo box also includes two side plate anti-collision beams (8) connected to the side plate reinforcing beam (7), and the two side plate anti-collision beams (8) are respectively connected to the two side plates (2,6).

7. The dump truck cargo box as described in claim 4 or 5, characterized in that, The base plate (1) is symmetrically provided with multiple first longitudinal reinforcing beams (11) and second longitudinal reinforcing beams (12) on its exterior, and multiple first transverse reinforcing beams (13) are provided on the exterior of the base plate (1) and the two side plates (2,6). The multiple first longitudinal reinforcing beams (11) and multiple second longitudinal reinforcing beams (12) are cross-connected with the multiple first transverse reinforcing beams (13); wherein, the multiple first longitudinal reinforcing beams (11) and multiple second longitudinal reinforcing beams (12) are arranged in parallel.

8. The dump truck cargo box as described in claim 7, characterized in that, The front plate (3) is provided with multiple second transverse reinforcing beams (14) on its exterior, and the brim (4) is provided with multiple third longitudinal reinforcing beams (15) on its exterior. The multiple second transverse reinforcing beams (14) are cross-connected with the multiple second longitudinal reinforcing beams (12), and the multiple third longitudinal reinforcing beams (15) are cross-connected with the multiple third longitudinal reinforcing beams (15).

9. The dump truck cargo box as described in claim 1, characterized in that, The base plate (1) and the front plate (3) are provided with an arc-shaped transition structure between the two side plates (2,6). The base plate (1) and the front plate (3) are connected by a transition plate (9). The angle between the transition plate (9) and the base plate (1) and the front plate (3) is an obtuse angle.

10. A dump truck, characterized in that, Includes a dump truck cargo box as described in any one of claims 1-9.

Images