Assembly type cargo compartment for mining dump truck and mining dump truck

Abstract

The invention discloses an assembly type cargo compartment for a mining dump truck and the mining dump truck. The assembly type cargo compartment comprises a bottom plate assembly, a side plate assembly, a front plate assembly, a brim assembly and a rear tail door assembly. The side plate assembly comprises a left side plate and a right side plate, and the left side plate and the right side plate are connected to the left side and the right side of the bottom plate through bolts. The front plate assembly is in bolted connection with the bottom plate assembly, the left side plate, the right side plate and the brim assembly. The brim assembly is respectively in bolted connection with the left side plate, the right side plate and the front plate assembly; the two ends of the top of the rear tail door assembly are hinged to the left side plate and the right side plate correspondingly. By means of the modular design and the full-bolt connection mode, the problems that a traditional overall welding cargo compartment is high in production cost, large in transportation difficulty, complex in maintenance and the like are effectively solved. Specifically, the independent design of the bottom plate assembly, the side plate assembly, the front plate assembly and the hat brim assembly allows split manufacturing and transportation, and the transportation size and cost are remarkably reduced; and a bolt connection mode replaces a welding process, so that the replaceability during local damage is improved.

Description

Technical Field

[0001] This invention relates to the field of mining transport vehicle technology, and in particular to a prefabricated cargo box for a mining dump truck and a mining dump truck. Background Technology

[0002] In mining dump truck applications, traditional cargo boxes generally adopt an integral welded structure. This structure requires extensive welding operations during manufacturing, resulting in complex and time-consuming processes that significantly increase production costs. Simultaneously, welding quality is difficult to control consistently, with welds prone to defects such as porosity and slag inclusions. After long-term use, the risk of weld cracking is high, severely impacting the structural integrity of the cargo box. The overall volume of the cargo box is large, occupying significant space during transportation, which not only significantly increases logistics costs but also imposes stringent requirements on road conditions, especially in the complex road conditions of mining areas where transportation is extremely difficult. The integral welded structure also results in excessive cargo box weight, increasing energy consumption during vehicle operation and hindering cost reduction. Furthermore, the welding process requires high operational precision and is prone to deformation, affecting assembly accuracy. When local areas such as the cargo box floor or side panels experience wear or damage, modular replacement is not possible, requiring only partial repairs or complete scrapping, leading to low maintenance efficiency and significant resource waste. These problems collectively restrict the economy, reliability, and service life of mining dump trucks, urgently requiring a new structural design to overcome existing technological bottlenecks. Summary of the Invention

[0003] In view of this, the present invention provides a prefabricated cargo box for mining dump trucks, which has the advantages of simplified manufacturing process, high assembly precision, and convenient transportation and maintenance.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A prefabricated cargo box for a mining dump truck includes: a floor assembly, a side panel assembly, a front panel assembly, and a visor assembly; bolt holes for assembly are provided on the front side and both left and right sides of the floor assembly; the side panel assembly includes a left side panel and a right side panel, which are bolted to the left and right sides of the floor assembly; the front panel assembly is bolted to the floor assembly, the left side panel, the right side panel, and the visor assembly; the visor assembly is bolted to the left side panel, the right side panel, and the front panel assembly to be assembled on the upper front end of the cargo box; the top two ends of the rear tailgate assembly are hinged to the left side panel and the right side panel, respectively.

[0006] Preferably, the base plate assembly includes a base plate, a front low side plate, a left low side plate, and a right low side plate; the front low side plate is welded and fixed to the front end of the base plate, and the left low side plate and the right low side plate are welded and fixed to the left and right sides of the base plate; bolt holes for assembly are provided on the front low side plate, the left low side plate, and the right low side plate.

[0007] Preferably, the base plate assembly further includes stiffening plates and flue plates; multiple stiffening plates are provided, and the multiple stiffening plates are arranged sequentially and spaced apart along the inner sides of the left low side plate, the front low side plate and the right low side plate. The bottom of the stiffening plate is welded to the base plate, the side of the stiffening plate is welded to the corresponding low side plate, and a ventilation channel is opened in the middle of the stiffening plate; three flue plates are provided, and the three flue plates respectively cover the stiffening plates on the left, front and right sides and are welded and fixed to the stiffening plates. The stiffening plates and the flue plates together form an exhaust channel.

[0008] Preferably, the left side plate and the right side plate are bolted to the left low side plate and the right low side plate, respectively. The upper part of the left side plate and the right side plate is covered with a wear-resistant layer, and the front part of the side plate area covered by the wear-resistant layer is provided with bolt holes for bolting to the brim assembly.

[0009] Preferably, the brim assembly includes a brim, a left connecting plate, and a right connecting plate. The left and right connecting plates are located on the left and right sides of the brim, respectively. Both the left and right connecting plates adopt a double-layer plate structure, with an insertion groove formed between the two layers of plates. At the same time, bolt holes are provided on both layers of plates. The brim is bolted to the wear-resistant layer covering area of ​​the left and right plates respectively through the insertion grooves of the left and right connecting plates, forming a "riding" assembly.

[0010] Preferably, the brim assembly further includes a support rod, one end of which is bolted to the front plate assembly and the other end of which is bolted to the bottom of the brim, the support rod being inclined forward to support the bottom of the brim.

[0011] Preferably, the front panel assembly includes a front panel, with a left bend and a right bend respectively provided on the left and right sides of the front panel, the left bend and the right bend being bolted to the left side panel and the right side panel respectively; a downward-bending rear bend is provided on the rear side of the brim, the upper part of the front panel is bolted to the rear bend, and the lower part of the front panel is bolted to the front low side panel.

[0012] Preferably, the front panel assembly further includes transverse reinforcing beams and longitudinal reinforcing beams, with multiple longitudinal reinforcing beams arranged at intervals along the left-right direction on the front panel, and the transverse reinforcing beams arranged in the middle of the front panel.

[0013] Preferably, an installation platform is provided at the intersection of the transverse reinforcing beam and the longitudinal reinforcing beam, and the installation platform is provided with bolt holes for bolting the support rod; there are two installation platforms, which are symmetrically arranged about the left and right central axes of the cargo box, and two support rods are provided accordingly.

[0014] The present invention also proposes a mining dump truck, including the prefabricated cargo box for the mining dump truck as described in any of the above embodiments.

[0015] The beneficial effects of this invention are as follows: Compared with the prior art, this application effectively solves the problems of high production cost, difficult transportation, and complex maintenance of traditional integral welded cargo boxes through modular design and all-bolted connection. Specifically, the independent design of the floor assembly, side panel assembly, front panel assembly, and visor assembly allows for separate manufacturing and transportation, significantly reducing transportation volume and cost; the bolted connection method replaces the welding process, reducing reliance on high-precision welding equipment and improving replaceability in case of partial damage; the standardized interface design between components further simplifies the assembly process, thereby improving production efficiency and enhancing maintenance convenience.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cargo compartment structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the base plate assembly of the present invention;

[0019] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0020] Figure 4 This is a schematic diagram of the front panel assembly of the present invention;

[0021] Figure 5 This is a structural schematic diagram of the brim assembly of the present invention;

[0022] Figure 6 This is a schematic diagram of the support rod of the present invention;

[0023] Figure 7 This is a schematic diagram of the side plate of the present invention;

[0024] Figure 8 This is a cross-sectional view of the base plate assembly of the present invention;

[0025] Figure 9 yes Figure 8 Enlarged view of region B in the middle;

[0026] Figure 10 This is a front view of the cargo compartment of the present invention;

[0027] Figure 11 This is a left view of the cargo compartment of the present invention;

[0028] Figure 12 This is a right view of the cargo compartment of the present invention;

[0029] Figure 13 This is a rear view of the cargo compartment of the present invention;

[0030] Figure 14 This is a top view of the cargo compartment of the present invention.

[0031] Figure Labels

[0032] 1. Base plate assembly; 11. Base plate; 12. Front low side plate; 13. Left low side plate; 14. Right low side plate; 15. Rib plate; 16. Flue plate; 161. Vent duct;

[0033] 2. Side panel assembly; 21. Left side panel; 22. Right side panel; 23. Wear-resistant layer;

[0034] 3. Front panel assembly; 31. Front panel; 32. Transverse reinforcing beam; 33. Longitudinal reinforcing beam; 34. Mounting platform; 311. Left bend; 312. Right bend;

[0035] 4. Hat brim assembly; 41. Hat brim; 42. Left side connecting plate; 43. Right side connecting plate; 44. Support rod; 411. Rear bend;

[0036] 5. Rear tailgate assembly. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] 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. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] The following is for reference. Figures 1 to 14 This invention describes a prefabricated cargo box for a mining dump truck in an embodiment of the present invention.

[0040] This application discloses a prefabricated cargo box for a mining dump truck, comprising: a floor assembly 1, a side panel assembly 2, a front panel assembly 3, a visor assembly 4, and a rear tailgate assembly 5; the floor assembly 1 has bolt holes for assembly on its front side and both sides; the side panel assembly 2 includes a left side panel 21 and a right side panel 22, which are bolted to the left and right sides of the floor assembly 11; the front panel assembly 3 is bolted to the floor assembly 1, the left side panel 21, the right side panel 22, and the visor assembly 4; the visor assembly 4 is bolted to the left side panel 21, the right side panel 22, and the front panel assembly 3 to be assembled on the upper front end of the cargo box; the top two ends of the rear tailgate assembly 5 are hinged to the left side panel 21 and the right side panel 22, respectively.

[0041] The floor assembly 1 serves as the basic load-bearing structure of the cargo box, and its main function is to provide interfaces for connection with other components. Specifically, the floor assembly 1 can be quickly assembled with other components by means of bolt holes on its front and left and right sides.

[0042] The innovation of this application lies in its modular design and all-bolted connection method, which effectively solves the problems of high production cost, difficult transportation, and complex maintenance inherent in traditional integral welded cargo boxes. Specifically, the independent design of the floor assembly 1, side panel assembly 2, front panel assembly 3, and visor assembly 4 allows for separate manufacturing and transportation, significantly reducing transportation volume and cost; the bolted connection method replaces the welding process, reducing reliance on high-precision welding equipment and improving replaceability in case of partial damage; the standardized interface design between components further simplifies the assembly process, thereby improving production efficiency and enhancing maintenance convenience.

[0043] The working principle of this application embodiment is as follows: A prefabricated cargo box for a mining dump truck achieves a fully bolted assembly method through the modular design of the bottom plate assembly 1, side plate assembly 2, front plate assembly 3, and visor assembly 4. This effectively solves the problems of high production cost, difficult transportation, and unstable weld quality caused by the overall welded structure. The bottom plate assembly 1, as the basic component of the entire cargo box, has bolt holes for assembly on its front and left / right sides. These bolt holes provide standardized interfaces for the precise docking of other components, ensuring rapid assembly and stable connection between the components. Furthermore, the left side plate 21 and right side plate 22 of the side plate assembly 2 are bolted to the left and right sides of the bottom plate assembly 1 respectively, avoiding the high dependence of traditional welding processes on manufacturing precision and process level, while facilitating rapid replacement or repair in case of local damage.

[0044] The front panel assembly 3 is fixedly connected to the bottom panel assembly 1, left side panel 21, right side panel 22, and visor assembly 4 via bolts. This multi-point connection method not only strengthens the overall rigidity of the front of the cargo box but also significantly reduces the risk of structural failure due to weld cracking. Specifically, the visor assembly 4 is bolted to the left side panel 21, right side panel 22, and front panel assembly 3 to form a stable fit, and is assembled on the upper front of the cargo box, thereby creating an additional support structure in the top area of ​​the cargo box and further enhancing the overall deformation resistance of the cargo box. The synergistic effect between the above components allows the entire cargo box to be assembled without welding, thereby significantly shortening the production time, reducing the difficulty of welding processes, and reducing the weight of the cargo box.

[0045] Furthermore, this prefabricated structure significantly reduces the volume requirements of the cargo box during transportation, thereby lowering transportation costs. It also improves the maintainability of the cargo box, allowing for quick replacement of damaged parts without requiring complete replacement. In summary, by combining modular design with a fully bolted connection mechanism, this technical solution successfully solves a series of problems caused by the integral welding of the cargo box in mining dump trucks, achieving the goals of improved production efficiency, convenient transportation, and simplified maintenance.

[0046] In some embodiments, for example Figure 2 As shown, the base plate assembly 1 includes a base plate 11, a front low side plate 12, a left low side plate 13, and a right low side plate 14; the front low side plate 12 is welded and fixed to the front end of the base plate 11, and the left low side plate 13 and the right low side plate 14 are welded and fixed to the left and right sides of the base plate 11. The front low side plate 12, the left low side plate 13, and the right low side plate 14 are all provided with bolt holes for assembly.

[0047] The floor plate 11 refers to the basic load-bearing structure at the bottom of the cargo compartment, which can be made of high-strength steel plate to provide sufficient load-bearing capacity. The front low side plate 12, left low side plate 13, and right low side plate 14 are vertically extending structures surrounding the edge of the floor plate 11. They are rigidly connected to the floor plate 11 through welding, thereby enhancing the bending resistance of the floor plate 11 edges. These low side plates are designed to distribute external loads and avoid localized stress concentration in the single-planar structure of the floor plate 11 under stress. Furthermore, bolt holes refer to the connection holes opened on the low side plates, which can be achieved by drilling to provide stable connection points for subsequent assembly.

[0048] Specifically, this design significantly enhances the mechanical properties of the edges of the base plate 11 by integrating a low side plate structure onto the base plate 11, providing a stable assembly foundation for bolted connections. The front low side plate 12 is welded and fixed to the front end of the base plate 11. This design is based on the characteristic that the front end of the base plate 11 needs to bear the connection load of the front plate assembly 3. By rigidly combining the low side plate with the base plate 11 through welding, it not only enhances the bending resistance of the front end but also provides a thick support surface for the bolted connection of the front plate assembly 3. The left low side plate 13 and right low side plate 14 are welded and fixed to the left and right sides of the base plate 11. This design addresses the lateral force transmission requirements during the connection of the side plate assembly 2, utilizing the vertical structure of the low side plates to absorb lateral impacts and reduce the torsional deformation of the base plate 11 caused by material impacts during mining dump truck operations. Meanwhile, bolt holes for assembly are provided on the front low side plate 12, left low side plate 13 and right low side plate 14. Thanks to the extra thickness and strength of the low side plates, the bolt connection points have higher shear resistance, thereby ensuring the stability of the assembly process and the durability of the connection in long-term use.

[0049] By utilizing the above technical solutions, the problem of insufficient edge strength in the bottom plate assembly 1 itself is effectively solved, avoiding the situation that deformation is likely to occur during bolt connection, and improving the reliability and assembly efficiency of the overall cargo box structure.

[0050] In some embodiments, for example Figure 9 As shown, the base plate assembly 1 also includes stiffening plates 15 and flue plates 16; multiple stiffening plates 15 are provided, and the multiple stiffening plates 15 are arranged alternately along the inner side of the left low side plate 13, the front low side plate 12 and the right low side plate 14. The bottom of the stiffening plate 15 is welded to the base plate 11, the side of the stiffening plate 15 is welded to the corresponding low side plate, and the middle of the stiffening plate 15 is provided with a ventilation channel 161; three flue plates 16 are provided, and the three flue plates 16 respectively cover the stiffening plates 15 on the left, front and right sides and are welded and fixed to the stiffening plates 15. The stiffening plates 15 and the flue plates 16 together form an exhaust channel.

[0051] The stiffening rib 15 is a supporting component used to enhance structural rigidity. It can be made of steel plate, structural steel, or other materials with high strength and rigidity. The stiffening rib 15 forms a double-fixed structure by welding its bottom to the base plate 11 and its sides to the lower side plate. This aims to improve the overall rigidity of the connection area between the base plate 11 and the lower side plate, effectively distribute load stress, and avoid localized stress concentration. Furthermore, the ventilation channel 161 in the middle of the stiffening rib 15 provides a basic path for gas flow, aiming to achieve internal exhaust and heat dissipation functions and prevent material performance degradation due to heat accumulation. The flue plate 16 is a sealed structure covering and welded to the stiffening rib 15. Its main function is to work with the stiffening rib 15 to construct a complete exhaust channel. The flue plate 16 can be made of single or multiple layers of metal plates, aiming to ensure the airtightness and airflow efficiency of the exhaust channel while enhancing the overall strength of the base plate 11.

[0052] Specifically, the above technical solution achieves a breakthrough in structural reinforcement and functional integration of the base plate assembly 1 through the combined design of stiffening plates 15 and flue plates 16. Multiple stiffening plates 15 are arranged sequentially and at intervals along the inner sides of the left low side plate 13, the front low side plate 12, and the right low side plate 14, allowing the load stress to be evenly distributed on the surface of the base plate 11, thereby effectively suppressing the problem of local stress concentration in the welding area of ​​the low side plates. The dual fixing method of welding the bottom of the stiffening plate 15 to the base plate 11 and the sides to the low side plates embeds the stiffening plate 15 as a rigid support between the base plate 11 and the low side plates, significantly enhancing the overall rigidity of the connection area and improving the base plate 11's resistance to deformation. The ventilation channel 161 opened in the middle of the stiffening plate 15 works synergistically with the covering structure of the flue plate 16 to form a continuous exhaust channel, ensuring that heat or exhaust gas can be directionally discharged, meeting the actual operating requirements of mining dump trucks in high-temperature and high-dust environments.

[0053] Based on this, the aforementioned technical solution forms an organic whole with the bottom plate 11, low side plates, and other structures. The arrangement of the stiffening plates 15 not only optimizes the stress distribution of the bottom plate 11 but also further enhances the overall stability of the bottom plate assembly 1 through welding and fixing with the low side plates. The covering design of the flue plate 16 enhances the structural strength while ensuring the integrity and efficiency of the exhaust channel, thereby effectively solving the problems of insufficient rigidity of the bottom plate 11 and lack of exhaust demand, and significantly improving the reliability and durability of the cargo box under harsh working conditions.

[0054] In some embodiments, for example Figure 1 As shown, the left side plate 21 and the right side plate 22 are bolted to the left low side plate 13 and the right low side plate 14, respectively. The upper part of the left side plate 21 and the right side plate 22 is covered with a wear-resistant layer 23. The front part of the side plate area covered by the wear-resistant layer 23 is provided with bolt holes for bolting to the brim assembly 4.

[0055] Among them, the wear-resistant layer 23 refers to a material covering layer with high hardness and wear resistance, which aims to effectively block the direct impact and friction of ore on the side plate body, thereby delaying material wear and maintaining structural integrity.

[0056] Specifically, this solution reinforces the high-wear areas frequently subjected to impact and friction during ore loading and unloading operations by covering the upper regions of the left side plate 21 and right side plate 22 with a wear-resistant layer 23. The wear-resistant layer 23 not only directly withstands the impact and friction of the ore, but also, by providing bolt holes at the front, transfers the connection points of the cap assembly 4 to the wear-resistant layer 23, utilizing its high strength to bear the connection stress, thereby effectively dispersing the stress distribution of the side plate body. Furthermore, this design avoids the stress concentration and cracking risks that might arise from directly creating bolt holes in the side plate body, while ensuring the stability and reliability of the connection points under frequent vibration and load. The above technical measures, combined with the overall assembly method of the bottom plate assembly 1, side plate assembly 2, and cap assembly 4, significantly improve the rigidity and long-term stability of the cargo box's front structure, solving the problem of shortened cargo box life caused by localized wear and unreliable connections.

[0057] In some embodiments, for example Figure 5 As shown, the brim assembly 4 includes a brim 41, a left connecting plate 42, and a right connecting plate 43. The left connecting plate 42 and the right connecting plate 43 are located on the left and right sides of the brim 41, respectively. Both the left connecting plate 42 and the right connecting plate 43 adopt a double-layer plate structure, with an insertion groove formed between the two layers of plates. At the same time, bolt holes are opened on both layers of plates. The brim 41 is bolted to the wear-resistant layer 23 covering area of ​​the left plate 21 and the right plate 22 through the insertion groove of the left and right connecting plates, respectively, forming a "riding" assembly.

[0058] The double-layer plate structure refers to a structure formed by stacking two layers of plates, which can be achieved through welding or integral molding. The insertion groove is constructed through the gap between the two layers of plates to accommodate the wear-resistant layer 23 covering area of ​​the side plate, aiming to increase the contact area and provide a mechanical fitting effect.

[0059] Specifically, the design of the brim assembly 4, with the left connecting plate 42 and the right connecting plate 43 symmetrically arranged on both sides of the brim 41, achieves uniform stress distribution and avoids local stress concentration. The double-layer plate structure not only enhances the local strength of the connecting plates but also provides physical support for the insertion slot, allowing the wear-resistant layer 23 covering the side plate to be securely embedded. The insertion slot design, based on the double-layer plate structure, significantly suppresses relative slippage caused by vibration by increasing the contact area and mechanical engagement depth between the side plate and the connecting plate. The bolt holes on the two plates, combined with the engagement effect of the insertion slot, achieve double locking of the bolts to the side plate, preventing the connection point from coming loose under dynamic loads. The brim 41 is bolted to the wear-resistant layer 23 area of ​​the side plate via the insertion slot; the wear-resistant layer 23 covering area provides additional wear protection, extending the service life of the connection. The final "riding" assembly method, through the covering fit of the upper part of the side plate on the brim 41, enhances the vibration resistance by utilizing the structural weight and geometric design, ensuring a stable and reliable connection under heavy load and bumpy working conditions of mining dump trucks.

[0060] Based on this, the brim assembly 4, together with the bottom plate assembly 1, side plate assembly 2, and front plate assembly 3, forms a cargo box structure with higher overall rigidity. The "riding" assembly method of the brim 41 is tightly integrated with the wear-resistant layer 23 covering area of ​​the side plate, effectively improving the overall rigidity of the front end of the cargo box, solving the problem of loosening of connections caused by strong vibration and impact, thereby improving the stability and service life of the cargo box.

[0061] In some embodiments, for example Figure 6 As shown, the brim assembly 4 also includes a support rod 44. One end of the support rod 44 is bolted to the front plate assembly 3, and the other end is bolted to the bottom of the brim 41. The support rod 44 is tilted forward and supported at the bottom of the brim 41.

[0062] Among them, support rod 44 refers to a rigid component used to provide structural support and force transmission. It can be made of metal round tubes, square tubes, or I-beams, etc., with the aim of ensuring support strength through reasonable material selection and cross-sectional design. Forward tilt support refers to the installation method in which support rod 44 forms a certain angle with the horizontal plane. Its tilt angle is usually set between 30° and 60° to achieve the best force transmission effect.

[0063] Specifically, this technical solution establishes a stable structural connection between the brim assembly 4 and the front panel assembly 3 through support rod 44, effectively solving the problem of insufficient support at the bottom of the brim 41. One end of the support rod 44 is connected to the reinforcing beam structure of the front panel assembly 3, using the front panel assembly 3 as a stable anchor point to ensure that the supporting force can be reliably transmitted to the main frame of the cargo box; the other end acts directly on the stress area at the bottom of the brim 41, forming an effective constraint in the vertical direction. The forward tilting design specifically considers the forward thrust generated when the mining dump truck unloads goods. By using a reasonable tilt angle, the dynamic load is converted into a diagonal supporting force, which not only disperses the concentrated stress at the bottom of the brim 41, but also matches the overall stress direction of the cargo box. This design method significantly improves the deformation resistance of the front structure while maintaining the lightweight characteristics of the prefabricated structure. In addition, the connection between the support rod 44 and the brim assembly 4 and the front panel assembly 3 is all bolted, consistent with the overall prefabricated design concept, avoiding the process complexity caused by additional welding.

[0064] Through the above technical solutions, the structural stability of the brim assembly 4 is significantly improved, and it can effectively resist dynamic loads in heavy-duty transportation and self-unloading operations, ensuring the long-term reliability of the connection area between the front of the cargo box and the brim 41, thereby extending the service life of the cargo box.

[0065] In some embodiments, for example Figure 4 As shown, the front panel assembly 3 includes a front panel 31, with a left bend 311 and a right bend 312 respectively on the left and right sides of the front panel 31. The left bend 311 and the right bend 312 are bolted to the left side panel 21 and the right side panel 22 respectively. The rear side of the brim 41 is provided with a downwardly bent rear bend 411. The upper part of the front panel 31 is bolted to the rear bend 411, and the lower part of the front panel 31 is bolted to the front low side panel 12.

[0066] The left bend 311 and right bend 312 refer to the three-dimensional geometric structures formed on the left and right sides of the front panel 31 through a bending process. Their purpose is to provide an expanded contact surface for the bolt connection between the front panel 31 and the side panel, and to disperse lateral impact forces to a larger area, thereby avoiding stress concentration caused by direct planar connection. The rear bend 411 refers to the reinforced anchoring structure formed on the rear side of the brim 41 through a bending process. Its purpose is to provide a rigid support point for the connection between the upper part of the front panel 31 and the brim 41, while also improving the deformation resistance of the upper front part of the cargo box.

[0067] Specifically, the front plate 31 is bolted to the left side plate 21 and the right side plate 22 via the left bend 311 and the right bend 312, respectively. This design utilizes the vertical transition surface of the bends to convert the lateral force generated during the movement of the mining dump truck into a distributed load along the connection surface, significantly reducing bolt shear stress and preventing connection failure under long-term vibration. The rear bend 411 on the rear side of the cap 41 is bolted to the upper part of the front plate 31, and combined with the bolted connection between the lower part of the front plate 31 and the front low side plate 12, a continuous support system from the top of the front end to the bottom is constructed. Through the synergistic effect of the upper and lower connections, the above structure forms a stable force chain in the vertical direction, effectively resisting the impact force of materials during unloading and preventing local buckling of the front plate 31. In addition, the bolted connection between the lower part of the front plate 31 and the front low side plate 12 is directly rigidly connected to the front low side plate 12 of the bottom plate assembly 1, ensuring that the load can be evenly transferred to the bottom plate 11 structure, avoiding stress concentration points, and maintaining the overall strength and durability of the cargo box under complex working conditions.

[0068] In some embodiments, for example Figure 4 As shown, the front panel assembly 3 also includes a transverse reinforcing beam 32 and a longitudinal reinforcing beam 33. There are multiple longitudinal reinforcing beams 33, which are spaced apart on the front panel 31 in the left-right direction. The transverse reinforcing beams 32 are arranged in the middle of the front panel 31.

[0069] The transverse reinforcing beam 32 is a reinforcing structural component installed along the width of the front plate 31. It can be made of rectangular steel pipes, I-beams, or channel steel, which have high bending strength. Its purpose is to improve the transverse load-bearing capacity of the central area of ​​the front plate 31 and prevent sagging deformation caused by concentrated loads during unloading operations. The longitudinal reinforcing beam 33 is a supporting structural component extending along the height of the front plate 31. It can be fixed to the inside of the front plate 31 by welding. Specifically, it can be made of bent steel plate or composite steel, and its purpose is to disperse the impact load from the sides and enhance the overall rigidity of the front plate 31.

[0070] Specifically, this solution systematically improves the mechanical performance of the front panel assembly 3 by integrating a composite support system of transverse and longitudinal reinforcing beams 33 within the front panel 31. Multiple longitudinal reinforcing beams 33 are evenly spaced along the left-right direction. This design fully considers the stress distribution characteristics of the front panel 31, distributing lateral loads evenly across multiple longitudinal support units and avoiding the risk of local buckling caused by concentrated stress at a single point. Simultaneously, transverse reinforcing beams 32 are positioned at the critical center of the front panel 31. Addressing the characteristic of the central area of ​​the front panel 31 bearing the maximum bending moment during unloading operations, this design strengthens the transverse bending resistance of this area, effectively preventing sagging or cracking of the central part of the front panel 31 under heavy loads. This structural design not only maintains the geometric stability and connection reliability of the cargo box's front end but also significantly improves the overall strength and long-term service performance of the front panel assembly 3 under complex stress environments.

[0071] Through the above technical solutions, the front panel assembly 3 can effectively cope with uneven impact and vibration loads during heavy-duty transportation and frequent unloading operations of mining dump trucks, and solves the problem that the front panel 31 is prone to local bending deformation or loosening of connection points, thereby ensuring the overall rigidity of the front end of the cargo box and improving the structural durability and safety performance.

[0072] In some embodiments, for example Figure 4 As shown, an installation platform 34 is provided at the intersection of the transverse reinforcing beam 32 and the longitudinal reinforcing beam 33. The installation platform 34 is provided with bolt holes for bolt connection with the support rod 44. There are two installation platforms 34, which are symmetrically arranged about the left and right central axes of the cargo box. There are two support rods 44 respectively.

[0073] The mounting platform 34 refers to the structure on the front panel assembly 3 used to reinforce the connection point of the support rod 44. By setting the mounting platform 34 at the intersection of the transverse reinforcing beam 32 and the longitudinal reinforcing beam 33, the load-bearing capacity of the reinforcing beams can be effectively integrated, providing a stable connection foundation for the support rod 44.

[0074] Specifically, this solution significantly improves the reliability of the brim 41 support by setting up mounting platforms 34 in the critical stress areas of the front panel assembly 3. Since the mounting platforms 34 are located at the intersection of the transverse reinforcing beams 32 and the longitudinal reinforcing beams 33, this location itself is the strength concentration point of the front panel 31 reinforcement structure, thus fully utilizing the load-bearing advantages of the reinforcing beams. The two mounting platforms 34 are symmetrically arranged about the left and right central axes of the cargo compartment, forming a balanced support system with the two support rods 44. This ensures that the load transmitted by the brim 41 is evenly distributed on the front panel assembly 3, avoiding structural imbalance caused by excessive force on one side. Furthermore, the symmetrical arrangement not only improves the overall structural balance but also enhances the deformation resistance of the front structure, effectively solving the technical problem of insufficient strength at the connection points of the support rods 44.

[0075] Through the above technical solution, the connection strength between the support rod 44 and the front panel assembly 3 is significantly improved, the reliability of the brim 41 support is enhanced, and the overall rigidity of the front end of the cargo box is optimized. This design not only improves the stress concentration problem caused by the dispersion of connection points in the traditional solution, but also disperses the load transmitted by the brim 41 through the double support structure, extending the service life of the cargo box.

[0076] This invention also proposes a mining dump truck, including a prefabricated cargo box for mining dump trucks as described in any of the above embodiments. By combining the floor assembly 1, side plate assembly 2, front plate assembly 3, and visor assembly 4 with a fully bolted connection, the problems of high production cost, difficult transportation, and complex maintenance of traditional integral welded cargo boxes are effectively solved, achieving the effects of significantly reducing welding dependence, improving assembly efficiency, and enhancing maintainability.

[0077] The prefabricated cargo box for mining dump trucks and other components and operations of mining dump trucks according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A prefabricated cargo box for a mining dump truck, characterized in that, include: Floor assembly, side panel assembly, front panel assembly, hood assembly, and rear tailgate assembly; The base plate assembly is provided with bolt holes for assembly on the front and left and right sides. The side panel assembly includes a left side panel and a right side panel, both of which are bolted to the left and right sides of the base plate. The front panel assembly is bolted to the bottom panel assembly, the left side panel, the right side panel, and the visor assembly, respectively. The brim assembly is bolted to the left side plate, the right side plate and the front plate assembly respectively, so as to be assembled on the upper front end of the cargo box; The top two ends of the rear tailgate assembly are hinged to the left side panel and the right side panel, respectively.

2. The prefabricated cargo box for mining dump trucks according to claim 1, characterized in that, The base plate assembly includes a base plate, a front low side plate, a left low side plate, and a right low side plate; the front low side plate is welded and fixed to the front end of the base plate, and the left and right low side plates are welded and fixed to the left and right sides of the base plate. Bolt holes for assembly are provided on the front low side plate, the left low side plate, and the right low side plate.

3. The prefabricated cargo box for mining dump trucks according to claim 2, characterized in that, The base plate assembly also includes stiffening plates and flue plates; multiple stiffening plates are provided, and the multiple stiffening plates are arranged alternately along the inner side of the left low side plate, the front low side plate and the right low side plate. The bottom of the stiffening plate is welded to the base plate, the side of the stiffening plate is welded to the corresponding low side plate, and a ventilation channel is provided in the middle of the stiffening plate. The flue plate consists of three pieces, which respectively cover the left, front, and right stiffeners and are welded and fixed to the stiffeners. The stiffeners and the flue plate together form an exhaust channel.

4. The prefabricated cargo box for mining dump trucks according to claim 2, characterized in that, The left side plate and the right side plate are bolted to the left low side plate and the right low side plate, respectively. The upper part of the left side plate and the right side plate is covered with a wear-resistant layer. The front part of the side plate area covered by the wear-resistant layer is provided with bolt holes for bolting to the brim assembly.

5. The prefabricated cargo box for mining dump trucks according to claim 4, characterized in that, The brim assembly includes a brim, a left connecting plate, and a right connecting plate. The left and right connecting plates are located on the left and right sides of the brim, respectively. Both the left and right connecting plates adopt a double-layer plate structure, with an insertion groove formed between the two layers of plates. At the same time, bolt holes are provided on both layers of plates. The brim is bolted to the wear-resistant layer covering area of ​​the left and right plates respectively through the insertion grooves of the left and right connecting plates, forming a "riding" assembly.

6. The prefabricated cargo box for mining dump trucks according to claim 5, characterized in that, The brim assembly also includes a support rod, one end of which is bolted to the front plate assembly and the other end of which is bolted to the bottom of the brim. The support rod is inclined forward and supported at the bottom of the brim.

7. The prefabricated cargo box for mining dump trucks according to claim 6, characterized in that, The front panel assembly includes a front panel, and a left bend and a right bend are respectively provided on the left and right sides of the front panel. The left bend and the right bend are bolted to the left side panel and the right side panel, respectively. The rear side of the brim is provided with a downward-bending rear bend, the upper part of the front plate is bolted to the rear bend, and the lower part of the front plate is bolted to the front low side plate.

8. The prefabricated cargo box for mining dump trucks according to claim 7, characterized in that, The front panel assembly also includes transverse reinforcing beams and longitudinal reinforcing beams. Multiple longitudinal reinforcing beams are provided and are arranged on the front panel at intervals along the left and right directions. The transverse reinforcing beams are arranged in the middle of the front panel.

9. The prefabricated cargo box for mining dump trucks according to claim 8, characterized in that, An installation platform is provided at the intersection of the transverse reinforcing beam and the longitudinal reinforcing beam, and bolt holes for bolting the support rod are provided on the installation platform. There are two installation platforms, which are symmetrically arranged about the left and right central axes of the cargo box, and two support rods are provided accordingly.

10. A mining dump truck, characterized in that, The prefabricated cargo box for mining dump trucks includes any one of claims 1-9 above.

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