Frame longitudinal beam with matrix type mounting holes, modular frame assembly and dump truck

Abstract

The invention relates to the technical field of vehicles, in particular to a frame longitudinal beam with matrix type mounting holes, a modular frame assembly and a dump truck. The groove type longitudinal beam body comprises a longitudinal beam web panel, a longitudinal beam upper wing panel connected to the upper end of the longitudinal beam web panel and a longitudinal beam lower wing panel connected to the lower end of the longitudinal beam web panel, a plurality of standard mounting holes are formed in the longitudinal beam web panel in a matrix mode, and the standard mounting holes are used for being detachably connected with other components of a frame assembly. Uniform interfaces are provided for chassis mounting parts of the frame assembly, the modular design of the modular frame assembly can be realized by adjusting the mounting positions and the number of the chassis mounting parts when the length of the frame assembly is changed, and the universal design requirements of different variable vehicles can be met based on the standard mounting holes distributed in a matrix manner; the modularization level of the whole vehicle is greatly improved, the universality of various chassis accessories on different variable vehicles is improved, and the research and development, manufacturing and after-sales costs are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a matrix-type mounting hole frame longitudinal beam, a modular frame assembly and a dump truck. Background Art

[0002] The frame assembly is the basic structure for mounting other components of the whole vehicle. In the traditional frame design structure, the mounting holes on the frame longitudinal beam are designed according to the hole position requirements of each component to be mounted on the longitudinal beam. Since the hole position requirements of different components are different, the aperture sizes and hole positioning methods of the mounting holes at different positions on the longitudinal beam are also different.

[0003] The existing design structure of the frame assembly has the following defects: First, the processing and manufacturing difficulty increases because the hole specifications at different positions are different, requiring more complex processing techniques and higher precision control; Second, it is difficult to realize serialized production of the frame assembly and mass production cannot be carried out according to unified standards and specifications; Third, for modified vehicles (vehicles with partial modifications or adjustments based on the basic model), the hole positions need to be redesigned separately and the hole position design of the original frame longitudinal beam cannot be directly used; Finally, the components cannot be interchanged because the hole positions and apertures are not unified. After a certain component is damaged, it is very difficult to find a completely matching replacement part.

[0004] Due to the defects of the existing design structure of the frame assembly, more effort is required in the R & D process of the vehicle to design different hole positions, more complex techniques and equipment are needed in the manufacturing process, and the cost will also increase during after-sales maintenance because the components cannot be interchanged. Summary of the Invention

[0005] The present invention provides a matrix-type mounting hole frame longitudinal beam, a modular frame assembly and a dump truck to solve the defects that the existing frame assembly makes the processing and manufacturing difficult in the R & D process of the vehicle, the frame assembly cannot be serialized, modified vehicles need to design hole positions separately, and the components cannot be interchanged, increasing the R & D, manufacturing and after-sales costs.

[0006] The present invention provides a matrix-type mounting hole frame longitudinal beam, including a trough-shaped longitudinal beam body which is integrally formed by stamping. The trough-shaped longitudinal beam body includes a longitudinal beam web panel, a longitudinal beam upper wing panel connected to the upper end of the longitudinal beam web panel, and a longitudinal beam lower wing panel connected to the lower end of the longitudinal beam web panel. A plurality of standard mounting holes are arranged in a matrix on the longitudinal beam web panel, and the standard mounting holes are used for detachable connection with other components of the frame assembly.

[0007] A matrix-type mounting hole frame longitudinal beam provided according to the present invention, the aperture of the standard mounting hole uniformly adopts one of 14.5 mm, 15.5 mm, and 17.5 mm; a plurality of the standard mounting holes are arranged at equal intervals on the longitudinal beam web panel, in the horizontal direction, the distance between two adjacent standard mounting holes is 40 - 60 mm, and in the vertical direction, the distance between two adjacent standard mounting holes is 50 - 70 mm.

[0008] The present invention also provides a modular frame assembly, including a frame longitudinal beam assembly module, a plurality of frame cross beam assembly modules, a wing beam assembly module, and a tail beam assembly module. The frame longitudinal beam assembly module includes two oppositely arranged frame longitudinal beams, and the frame longitudinal beam is the matrix-type mounting hole frame longitudinal beam described in any one of the above. The trough-shaped longitudinal beam bodies of the two matrix-type mounting hole frame longitudinal beams are arranged oppositely to form the frame longitudinal beam assembly module.

[0009] The frame cross beam assembly module is connected between the two trough-shaped longitudinal beam bodies. A plurality of the frame cross beam assembly modules are arranged in parallel and are located in the middle of the trough-shaped longitudinal beam bodies. The two ends of the frame cross beam assembly module are respectively detachably connected to the standard mounting holes on the two trough-shaped longitudinal beam bodies.

[0010] The wing beam assembly module is connected between the two trough-shaped longitudinal beam bodies and is located in the mid-rear part of the trough-shaped longitudinal beam bodies. The two ends of the wing beam assembly module are respectively detachably connected to the standard mounting holes on the two trough-shaped longitudinal beam bodies.

[0011] The tail beam assembly module is connected between the two trough-shaped longitudinal beam bodies and is located at the tail of the trough-shaped longitudinal beam bodies. The two ends of the tail beam assembly module are respectively detachably connected to the standard mounting holes on the two trough-shaped longitudinal beam bodies.

[0012] A modular frame assembly provided according to the present invention, a front sub-frame connecting piece, a middle sub-frame connecting piece, and a rear sub-frame connecting piece are detachably connected to the upper end of the longitudinal beam web panel of the trough-shaped longitudinal beam body. The front sub-frame connecting piece, the middle sub-frame connecting piece, and the rear sub-frame connecting piece are used to connect the upper-mounted sub-frame.

[0013] One front sub-frame connecting piece is provided on each trough-shaped longitudinal beam body, and the front sub-frame connecting piece is located on one side of all the frame cross beam assembly modules close to the front part of the trough-shaped longitudinal beam body; a plurality of middle sub-frame connecting pieces are provided on each trough-shaped longitudinal beam body, and the plurality of middle sub-frame connecting pieces are spaced apart and distributed in the middle of the trough-shaped longitudinal beam body; two rear sub-frame connecting pieces are provided on each trough-shaped longitudinal beam body, and the two rear sub-frame connecting pieces are located on both sides of the wing beam assembly module.

[0014] According to a modular vehicle frame assembly provided by the present invention, L-shaped reinforcing plates are detachably connected to the longitudinal beam web plates of two opposite trough-shaped longitudinal beam bodies. The L-shaped reinforcing plates extend along the length direction of the trough-shaped longitudinal beam bodies, and a plurality of the vehicle frame cross beam assembly modules and the wing beam assembly modules are all lapped on the L-shaped reinforcing plates.

[0015] According to a modular vehicle frame assembly provided by the present invention, the front parts of two opposite trough-shaped longitudinal beam bodies are bent away from each other to form widened parts of the vehicle frame longitudinal beam assembly module for placing an engine.

[0016] According to a modular vehicle frame assembly provided by the present invention, the vehicle frame cross beam assembly module includes a cross beam body, two upper cross beam connecting plates and two lower cross beam connecting plates. The cross beam body is arranged perpendicular to two opposite trough-shaped longitudinal beam bodies, and the cross beam body is composed of a cross beam web plate, a cross beam upper wing plate and a cross beam lower wing plate to form a trough-shaped structure.

[0017] Two upper cross beam connecting plates are respectively riveted to both ends of the cross beam upper wing plate. One end of the upper cross beam connecting plate away from the cross beam upper wing plate forms a bent part, and connecting holes corresponding to standard mounting holes on the trough-shaped longitudinal beam body are distributed on the bent part for detachably connecting to the trough-shaped longitudinal beam body through connecting pieces.

[0018] Two lower cross beam connecting plates are respectively riveted to both ends of the cross beam lower wing plate. One end of the lower cross beam connecting plate away from the cross beam lower wing plate forms a bent part, and connecting holes corresponding to standard mounting holes on the trough-shaped longitudinal beam body are distributed on the bent part for detachably connecting to the trough-shaped longitudinal beam body through connecting pieces.

[0019] According to a modular vehicle frame assembly provided by the present invention, the wing beam assembly module includes a wing beam body, two upper wing beam connecting plates and two lower wing beam connecting plates. The wing beam body is arranged perpendicular to two opposite trough-shaped longitudinal beam bodies. The wing beam body is a hollow and gradually changing structure, and connecting parts are formed on the upper side, lower side and both end sides of the wing beam body.

[0020] Two upper wing beam connecting plates are respectively connected to both ends of the upper side of the wing beam body. The upper wing beam connecting plates are L-shaped plates, respectively connected to the upper side and one end side of the wing beam body. Connecting holes corresponding to standard mounting holes on the trough-shaped longitudinal beam body are distributed on the upper wing beam connecting plates for detachably connecting to the trough-shaped longitudinal beam body through connecting pieces.

[0021] The two lower connecting plates of the flying wing beam are respectively connected to both ends of the lower side of the flying wing beam body. The lower connecting plate of the flying wing beam is an L-shaped plate, which is respectively connected to the lower side and one end side of the flying wing beam body. Connection holes corresponding to the standard mounting holes on the trough-shaped longitudinal beam body are distributed on the lower connecting plate of the flying wing beam, and are used for detachably connecting with the trough-shaped longitudinal beam body through connecting pieces.

[0022] According to a modular vehicle frame assembly provided by the present invention, the tail beam assembly module is an integral stamping structure, including a tail beam body part and connecting parts vertically arranged at four corners of the tail beam body part. Connection holes corresponding to the standard mounting holes on the trough-shaped longitudinal beam body are distributed on the connecting parts, and are used for detachably connecting with the trough-shaped longitudinal beam body through connecting pieces.

[0023] The present invention also provides a dump truck, including the modular vehicle frame assembly described in any one of the above.

[0024] The matrix-type mounting hole vehicle frame longitudinal beam, modular vehicle frame assembly and dump truck provided by the present invention. The trough-shaped longitudinal beam body of the matrix-type mounting hole vehicle frame longitudinal beam adopts an equal-section trough-shaped beam structure. Standard mounting holes are arranged in a matrix on the longitudinal beam web panel of the trough-shaped longitudinal beam body, providing a unified interface for chassis-mounted components of the vehicle frame assembly. When the length of the vehicle frame assembly changes, by adjusting the mounting positions and quantities of the chassis-mounted components, a variant design of the modular vehicle frame assembly can be realized. The present invention can meet the needs of general design of different variant vehicles based on the matrix-distributed standard mounting holes, greatly improving the modular level of the whole vehicle, enhancing the universality of various chassis accessories on different variant vehicles, and reducing the R & D, manufacturing and after-sales costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is a schematic structural diagram of the matrix-type mounting hole vehicle frame longitudinal beam provided by the present invention.

[0027] Figure 2 is a schematic distribution diagram of the standard mounting holes on the longitudinal beam web panel provided by the present invention.

[0028] Figure 3 is an axonometric structural diagram of the modular vehicle frame assembly provided by the present invention.

[0029] Figure 4 is a top view schematic diagram of the modular vehicle frame assembly provided by the present invention.

[0030] Figure 5 It is the front view schematic diagram of the modular vehicle frame assembly provided by the present invention.

[0031] Figure 6 It is the structural schematic diagram of the vehicle frame crossbeam assembly module provided by the present invention.

[0032] Figure 7 It is the structural schematic diagram of the flying wing beam assembly module provided by the present invention.

[0033] Figure 8 It is the structural schematic diagram of the tail beam assembly module provided by the present invention.

[0034] Reference numerals: 1, channel-shaped longitudinal beam body; 11, longitudinal beam web panel; 12, longitudinal beam upper wing panel; 13, longitudinal beam lower wing panel; 14, standard mounting hole; 2, vehicle frame crossbeam assembly module; 21, crossbeam body; 22, upper crossbeam connecting plate; 23, lower crossbeam connecting plate; 3, flying wing beam assembly module; 31, flying wing beam body; 32, upper flying wing beam connecting plate; 33, lower flying wing beam connecting plate; 4, tail beam assembly module; 41, tail beam body part; 42, connecting part; 5, front subframe connecting piece; 6, middle subframe connecting piece; 7, rear subframe connecting piece; 8, L-shaped reinforcing plate. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0037] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0038] In the embodiments of the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0040] The following combines Figures 1 to 8 to describe the specific structures of the matrix installation hole frame longitudinal beam, modular frame assembly, and dump truck of the present invention.

[0041] An embodiment of the present invention provides a matrix installation hole frame longitudinal beam. Combining Figure 1 and Figure 2 as shown, the matrix installation hole frame longitudinal beam includes a channel-shaped longitudinal beam body 1. The channel-shaped longitudinal beam body 1 is integrally formed by stamping. The channel-shaped longitudinal beam body 1 includes a longitudinal beam web panel 11, a longitudinal beam upper wing panel 12 connected to the upper end of the longitudinal beam web panel 11, and a longitudinal beam lower wing panel 13 connected to the lower end of the longitudinal beam web panel 11. A plurality of standard installation holes 14 are arranged in a matrix on the longitudinal beam web panel 11. The standard installation holes 14 are used for detachable connection with other components of the frame assembly.

[0042] It can be understood that for the matrix-mounted hole frame longitudinal beam of this embodiment, the trough-shaped longitudinal beam body 1 adopts an equal-section trough-shaped beam structure, and standard mounting holes 14 are arranged in a matrix on the longitudinal beam web panel 11 of the trough-shaped longitudinal beam body 1, providing a unified interface for the chassis mounting parts of the frame assembly. When the length of the frame assembly changes, by adjusting the mounting positions and quantities of the chassis mounting parts, a modular frame assembly variant design can be achieved. The matrix-mounted hole frame longitudinal beam of this embodiment can, based on the standard mounting holes 14 arranged in a matrix, meet the needs of the general design of different variant vehicles, greatly improve the overall vehicle modular level, enhance the universality of various chassis accessories on different variant vehicles, and reduce the R & D, manufacturing, and after-sales costs.

[0043] In some embodiments of the matrix-mounted hole frame longitudinal beam of the present invention, the aperture of the standard mounting hole 14 uniformly adopts one of 14.5 mm, 15.5 mm, and 17.5 mm; multiple standard mounting holes 14 are arranged at equal distances on the longitudinal beam web panel 11. In the horizontal direction, the distance between two adjacent standard mounting holes 14 is 40 - 60 mm, and in the vertical direction, the distance between two adjacent standard mounting holes 14 is 50 - 70 mm. During manufacturing, a matrix arrangement of punching heads is used to achieve the machining of the hole positions of the standard mounting holes 14 without adjusting the punch layout, which is more efficient and accurate than traditional punching.

[0044] The aperture of the standard mounting hole 14 is uniformly specified as one of three sizes during design, namely 14.5 mm, 15.5 mm, or 17.5 mm. This selective aperture setting is to meet different application scenarios and mounting requirements, ensuring the best assembly effect and structural strength. Refer to Figure 2 As shown, the aperture of the standard mounting hole 14 is uniformly selected as 15.5 mm. In the horizontal direction (X-axis direction), the distance between two adjacent standard mounting holes 14 is set between 40 mm and 60 mm, and in this embodiment, it is taken as 50 mm. Such a spacing design not only ensures sufficient structural strength but also provides flexibility to adapt to different mounting requirements; in the vertical direction (Z-axis direction), the distance between two adjacent standard mounting holes 14 is set between 50 mm and 70 mm, and in this embodiment, it is taken as 60 mm. This vertical spacing, combined with the horizontal spacing, forms a rectangular grid layout, thus constituting the so-called "matrix distribution".

[0045] By adopting the standard mounting holes 14 with specific specifications in this embodiment, the longitudinal frame beams of the vehicle frame can achieve modular design. The design of this matrix-type mounting holes greatly simplifies the production process, and since all the associated mounting holes are standardized, the requirements for specific tools or processes are reduced. For maintenance, it is easier to find matching replacement parts, further reducing the maintenance cost. In addition, it also supports a more efficient production and assembly process because manufacturers can flexibly adjust the positions of components as needed without having to redesign the entire vehicle frame structure. When the total length of the vehicle frame needs to change, variant design can be easily carried out by adjusting the mounting positions and quantities of the chassis components. This not only improves the modular level of the entire vehicle but also enhances the versatility of various chassis accessories on different variant vehicles, reducing the R & D, manufacturing, and after-sales costs.

[0046] On the other hand, the present invention also provides a modular vehicle frame assembly, as shown in Figure 3 , Figure 4 and Figure 5 . The modular vehicle frame assembly includes a longitudinal frame beam assembly module, a plurality of cross frame beam assembly modules 2, a wing beam assembly module 3, and a tail beam assembly module 4. The cross frame beam assembly modules 2, the wing beam assembly module 3, and the tail beam assembly module 4 are connected between the longitudinal frame beam assembly modules, and the upper edges of the cross beam assemblies are all lower than those of the longitudinal frame beam assembly modules.

[0047] Among them, the longitudinal frame beam assembly module includes two longitudinally arranged frame beams facing each other. The frame beams are the matrix-type mounting hole frame beams of any one of the above embodiments. The trough-shaped longitudinal beam bodies 1 of the two matrix-type mounting hole frame beams are arranged facing each other to form the longitudinal frame beam assembly module. It can be understood that the material of the trough-shaped longitudinal beam body 1 in this embodiment can be low-alloy high-strength hot-rolled steel plate, with a thickness range of 4 - 10 mm and a material grade of 500L - 700L. The cross-sectional thickness of the trough-shaped longitudinal beam body 1 can be designed as a non-uniform thickness cross-sectional structure according to the load-bearing capacity requirements of the vehicle model to achieve local strengthening of the longitudinal beam. Similarly, the cross-sectional height of the trough-shaped longitudinal beam body 1 can also be designed as a non-uniform height cross-sectional structure according to the load-bearing capacity requirements of the vehicle model to achieve local strengthening of the longitudinal beam. The two opposite trough-shaped longitudinal beam bodies 1 form the longitudinal frame beam assembly module, which serves as the basic support structure of the entire vehicle frame assembly. Through the standard mounting holes 14 on the web plate 11 of the longitudinal beam of the trough-shaped longitudinal beam body 1, a unified interface is provided for the connection of other modules, and no drilling is required for vehicle modification, maximizing the modification adaptability of dump trucks.

[0048] The frame crossbeam assembly module 2 is connected between two channel-shaped longitudinal beam bodies 1. Multiple frame crossbeam assembly modules 2 are arranged in parallel and are located in the middle of the channel-shaped longitudinal beam bodies 1. The two ends of the frame crossbeam assembly module 2 are respectively detachably connected to the standard mounting holes 14 on the two channel-shaped longitudinal beam bodies 1. It can be understood that multiple frame crossbeam assembly modules are arranged in parallel between the two channel-shaped longitudinal beam bodies 1 and are concentrated in the middle of the channel-shaped longitudinal beam bodies 1. Each end is detachably connected to the two channel-shaped longitudinal beam bodies 1 through the standard mounting holes 14. The frame crossbeam assembly module 2 strengthens the overall rigidity of the frame and at the same time provides mounting points for the suspension system and other chassis components.

[0049] The wing beam assembly module 3 is connected between two channel-shaped longitudinal beam bodies 1 and is located in the mid-rear part of the channel-shaped longitudinal beam bodies 1. The two ends of the wing beam assembly module 3 are respectively detachably connected to the standard mounting holes 14 on the two channel-shaped longitudinal beam bodies 1. It can be understood that the wing beam assembly module 3 is located in the mid-rear area between the two channel-shaped longitudinal beam bodies 1 and is also detachably connected to the two channel-shaped longitudinal beam bodies 1 through the standard mounting holes 14. The wing beam assembly module 3 usually has a gradient structure design to adapt to different load distributions and space limitations.

[0050] The tail beam assembly module 4 is connected between two channel-shaped longitudinal beam bodies 1 and is located at the tail of the channel-shaped longitudinal beam bodies 1. The two ends of the tail beam assembly module 4 are respectively detachably connected to the standard mounting holes 14 on the two channel-shaped longitudinal beam bodies 1. It can be understood that the tail beam assembly module 4 is located at the tail between the two channel-shaped longitudinal beam bodies 1 and is detachably connected to the two channel-shaped longitudinal beam bodies 1 through the standard mounting holes 14. The tail beam assembly module 4 can enhance the strength of the frame tail and may also provide additional mounting points for specific equipment or accessories.

[0051] The design of the modular frame assembly in this embodiment allows the manufacturer to quickly adjust and configure the frame assembly according to the requirements of different vehicle models. Since all modules are based on the same matrix-type mounting hole layout, the interchangeability and universality of parts can be greatly improved, the production process can be simplified, and the manufacturing cost can be reduced. In addition, this modular method also facilitates maintenance and service because replacing or repairing a certain part does not require large-scale modification of the entire frame. Adopting the modular frame assembly of this embodiment can significantly improve the modular level of the whole vehicle, enabling different variant vehicles to share the same set of design schemes and technical specifications to a greater extent. This not only helps to reduce the R & D cycle and cost, but also better meets the diverse needs of the market and improves the competitiveness of the product.

[0052] In some embodiments of the modular frame assembly of the present invention, in combination with Figure 3 and Figure 5As shown in the figure, a front subframe connector 5, a middle subframe connector 6, and a rear subframe connector 7 are detachably connected to the upper end of the web panel 11 of the trough-shaped longitudinal beam body 1. The front subframe connector 5, the middle subframe connector 6, and the rear subframe connector 7 are used to connect the upper-mounted subframe.

[0053] One front subframe connector 5 is provided on each trough-shaped longitudinal beam body 1, and the front subframe connector 5 is located on one side of all the frame crossbeam assembly modules 2 close to the front part of the trough-shaped longitudinal beam body 1; multiple middle subframe connectors 6 are provided on each trough-shaped longitudinal beam body 1, and the multiple middle subframe connectors 6 are spaced apart and distributed in the middle of the trough-shaped longitudinal beam body 1; two rear subframe connectors 7 are provided on each trough-shaped longitudinal beam body 1, and the two rear subframe connectors 7 are located on both sides of the wing beam assembly module 3.

[0054] It can be understood that in this embodiment, by adding the design of subframe connectors, a firm connection between the upper-mounted subframe and the main frame is achieved. Among them, one front subframe connector 5 is provided at a position close to the front part of the upper end of the web panel 11 of each trough-shaped longitudinal beam body 1, which is used to connect the front end part of the upper-mounted subframe to ensure the stability of the front structure of the vehicle. Multiple middle subframe connectors 6 are spaced apart and distributed in the middle area of the trough-shaped longitudinal beam body 1. The middle subframe connectors 6 provide additional support points, enhance the connection strength between the upper-mounted subframe and the main frame, ensure that the load can be evenly dispersed during the driving of the vehicle, and improve the stability and durability of the overall structure. Two rear subframe connectors 7 are provided at the tail of the trough-shaped longitudinal beam body 1, and the two rear subframe connectors 7 are located on both sides of the wing beam assembly module 3. The rear subframe connectors 7 are used to connect the rear end part of the upper-mounted subframe to ensure the firmness of the rear structure of the vehicle and provide mounting points for specific equipment or accessories.

[0055] The front subframe connector 5, the middle subframe connector 6, and the rear subframe connector 7 are all detachably connected to the web panel 11 on the trough-shaped longitudinal beam body 1 through standard mounting holes 14. This standardized connection method not only simplifies the assembly process but also makes maintenance and replacement more convenient. In this embodiment, by adding special connectors at key positions (the front, middle, and rear of the trough-shaped longitudinal beam body 1), the connection stability between the upper-mounted subframe and the main frame is effectively improved, thereby enhancing the safety and reliability of the entire vehicle structure. Since the subframe connectors are designed based on the matrix-type mounting hole layout, the number and position of the connectors can be flexibly adjusted according to the requirements of different vehicle models to meet diverse design requirements. The adoption of a standardized connection scheme reduces the production complexity and also facilitates subsequent maintenance and service work, reducing the repair time and cost.

[0056] In some other embodiments of the modular frame assembly of the present invention, continue to refer to Figure 3As shown, L-shaped reinforcing plates 8 are detachably connected to the web plates 11 of the two opposite trough-shaped longitudinal beam bodies 1. The L-shaped reinforcing plates 8 extend along the length direction of the trough-shaped longitudinal beam bodies 1. A plurality of vehicle frame cross beam assembly modules 2 and wing beam assembly modules 3 are all lapped on the L-shaped reinforcing plates 8.

[0057] It can be understood that the main function of the L-shaped reinforcing plate 8 is to provide additional support and strengthening effect, especially at the lap joint of the vehicle frame cross beam assembly module 2 and the wing beam assembly module 3. This helps to disperse the load and reduce local stress concentration, thereby improving the bending and torsional resistance of the vehicle frame. By lapping the plurality of vehicle frame cross beam assembly modules 2 and the wing beam assembly module 3 on the L-shaped reinforcing plate 8, the acting forces from different directions can be more effectively distributed and transmitted, making the entire vehicle frame system more stable and reliable.

[0058] The presence of the L-shaped reinforcing plate 8 significantly enhances the connection stiffness between the vehicle frame longitudinal beams and reduces the possibility of deformation, especially when facing large loads or complex road conditions. Since the L-shaped reinforcing plate 8 is detachably connected, its position can be flexibly adjusted or it can be replaced according to actual needs without affecting the normal operation of other components. In addition, this design is also convenient for later maintenance and repair. The L-shaped reinforcing plate 8 not only provides a physical strengthening effect, but also provides a stable installation platform for components such as the vehicle frame cross beam assembly module 2 and the wing beam assembly module 3, further promoting the modular design concept of the vehicle frame assembly.

[0059] In some embodiments of the modular vehicle frame assembly of the present invention, refer to Figure 4 As shown, the front parts of the two opposite trough-shaped longitudinal beam bodies 1 are bent away from each other to form widened parts of the vehicle frame longitudinal beam assembly module for placing the engine.

[0060] It can be understood that the widened parts of the vehicle frame longitudinal beam assembly module are located at the front end of the vehicle frame longitudinal beam assembly module, ensuring sufficient space to accommodate the engine and related components, such as the intake system, exhaust system, etc. By creating additional space at the front of the vehicle frame, the position and angle of the engine can be arranged more flexibly, which is beneficial to improving the cooling effect and maintenance convenience. The existence of the widened parts enables the vehicle frame to adapt to engines of various sizes and types, enhancing the flexibility of vehicle configuration. The middle and rear ends of the vehicle frame longitudinal beam assembly module still meet the vehicle width limit regulation requirement of 2550 mm for the whole vehicle.

[0061] In some embodiments of the modular vehicle frame assembly of the present invention, refer to Figure 6As shown in the figure, the frame crossbeam assembly module 2 includes a crossbeam body 21, two upper crossbeam connecting plates 22, and two lower crossbeam connecting plates 23. The crossbeam body 21 is perpendicular to two opposite channel-shaped longitudinal beam bodies 1. The crossbeam body 21 is composed of a crossbeam web panel, a crossbeam upper wing panel, and a crossbeam lower wing panel to form a channel-shaped structure. The two upper crossbeam connecting plates 22 are respectively riveted to both ends of the crossbeam upper wing panel. One end of the upper crossbeam connecting plate 22 away from the crossbeam upper wing panel forms a bent portion, and connection holes corresponding to the standard mounting holes 14 on the channel-shaped longitudinal beam body 1 are distributed on the bent portion, for detachably connecting with the channel-shaped longitudinal beam body 1 through connecting pieces. The two lower crossbeam connecting plates 23 are respectively riveted to both ends of the crossbeam lower wing panel. One end of the lower crossbeam connecting plate 23 away from the crossbeam lower wing panel forms a bent portion, and connection holes corresponding to the standard mounting holes 14 on the channel-shaped longitudinal beam body 1 are distributed on the bent portion, for detachably connecting with the channel-shaped longitudinal beam body 1 through connecting pieces.

[0062] In some specific examples, the frame crossbeam assembly module 2 is formed by integrally stamping the crossbeam body 21 and connecting it with the arched upper crossbeam connecting plate 22 and the lower crossbeam connecting plate 23 through rivets. The connection holes at the bent portions of the upper crossbeam connecting plate 22 and the lower crossbeam connecting plate 23 are distributed in multiples of 50 mm along the horizontal direction; the crossbeam assembly adopts an integrated stamping beam body and an arched connecting plate, reducing the weight of the crossbeam assembly and improving the universality rate of the crossbeam; the crossbeam body 21 is of an integrated stamping structure, with a flat upper end and an arched lower end design; the upper end of the crossbeam body 21 does not exceed the uppermost end of the frame longitudinal beam assembly module, ensuring no interference with the sub-frame of the dump truck's upper body. The lower end of the crossbeam body 21 is an arched arc structure to ensure the movement space of the transmission shaft; the connection hole spacing of the bent portions of the upper crossbeam connecting plate 22 and the lower crossbeam connecting plate 23 is a 50 mm standard hole layout, and is connected to the matrix-type standard mounting holes 14 of the frame longitudinal beam assembly module through bolts / rivets.

[0063] It can be understood that the crossbeam body 21 is perpendicular to the two oppositely arranged channel-shaped longitudinal beam bodies 1, playing a role of transverse connection and support. The crossbeam body 21 is composed of a crossbeam web panel, a crossbeam upper wing panel, and a crossbeam lower wing panel, forming a channel-shaped (C-shaped) structure. This design not only provides sufficient strength but also facilitates connection with other components. The two upper crossbeam connection plates 22 are respectively fixed at both ends of the crossbeam upper wing panel by riveting. One end away from the crossbeam upper wing panel forms a bent portion, and connection holes corresponding to the standard mounting holes 14 on the channel-shaped longitudinal beam body 1 are distributed on the bent portion. The bent portion and the connection holes thereon are used for detachable connection with the channel-shaped longitudinal beam body 1 through connecting pieces (such as bolts or screws), ensuring that the crossbeam body 21 can be firmly fixed on the vehicle frame longitudinal beam while retaining the flexibility of disassembly and maintenance. The two lower crossbeam connection plates 23 are also fixed at both ends of the crossbeam lower wing panel by riveting. Similar to the upper crossbeam connection plate 22, one end of the lower crossbeam connection plate 23 away from the crossbeam lower wing panel also forms a bent portion, and connection holes corresponding to the standard mounting holes 14 on the channel-shaped longitudinal beam body 1 are also distributed on the bent portion. These connection holes are used for detachable connection with the channel-shaped longitudinal beam body 1 through connecting pieces, further enhancing the stability and rigidity of the entire vehicle frame system.

[0064] The design of the upper crossbeam connection plate 22 and the lower crossbeam connection plate 23 enables the crossbeam body 21 to be firmly connected to the channel-shaped longitudinal beam body 1, thus significantly improving the overall structural rigidity and torsional resistance of the vehicle frame. The adoption of a standardized connection hole layout and detachable connection method not only simplifies the assembly process but also facilitates subsequent maintenance and service work. For example, when a certain part needs to be replaced or repaired, it is not necessary to make large-scale modifications to the entire vehicle frame. All connections are based on the standard mounting holes 14 distributed in a matrix, ensuring high interchangeability between different modules, reducing production costs, and shortening the R & D cycle. The design of the bent portion helps to more evenly distribute the acting forces from different directions, reduce local stress concentration, and extend the service life of the vehicle frame system.

[0065] In some embodiments of the modular vehicle frame assembly of the present invention, refer to Figure 7As shown in the figure, the flying wing beam assembly module 3 includes a flying wing beam body 31, two upper connecting plates 32 of the flying wing beam, and two lower connecting plates 33 of the flying wing beam. The flying wing beam body 31 is perpendicular to the two opposite trough-shaped longitudinal beam bodies 1. The flying wing beam body 31 is a hollow and gradually changing structure, and connecting parts are formed on the upper side, lower side, and both end sides of the flying wing beam body 31. The two upper connecting plates 32 of the flying wing beam are respectively connected to both ends of the upper side of the flying wing beam body 31. The upper connecting plates 32 of the flying wing beam are L-shaped plates, which are respectively connected to the upper side and one end side of the flying wing beam body 31. Connecting holes corresponding to the standard mounting holes 14 on the trough-shaped longitudinal beam body 1 are distributed on the upper connecting plates 32 of the flying wing beam, and are used for detachably connecting with the trough-shaped longitudinal beam body 1 through connecting pieces. The two lower connecting plates 33 of the flying wing beam are respectively connected to both ends of the lower side of the flying wing beam body 31. The lower connecting plates 33 of the flying wing beam are L-shaped plates, which are respectively connected to the lower side and one end side of the flying wing beam body 31. Connecting holes corresponding to the standard mounting holes 14 on the trough-shaped longitudinal beam body 1 are distributed on the lower connecting plates 33 of the flying wing beam, and are used for detachably connecting with the trough-shaped longitudinal beam body 1 through connecting pieces.

[0066] In some specific examples, the flying wing beam assembly module 3 is integrally connected by bolts with the upper connecting plate 32 and the lower connecting plate 33 of the flying wing beam through the cast integral flying wing beam body 31. The connecting holes on the upper connecting plate 32 and the lower connecting plate 33 of the flying wing beam are distributed at multiples of 50 mm in the horizontal direction. The flying wing beam assembly module 3 adopts a cast pipe crossbeam body (flying wing beam body 31) and a gradually changing crossbeam connecting plate (upper connecting plate 32 and lower connecting plate 33 of the flying wing beam), and improves the lightweight level on the premise of ensuring the strength of the vehicle frame assembly; the flying wing beam body 31 is an integrally cast rectangular tubular crossbeam, and the material grade used is QT700 or QT800. The rear suspension thrust rod mounting seat and the connecting plate mounting seat are designed at its upper end. The upper connecting plate 32 and the lower connecting plate 33 of the flying wing beam are provided with a standard hole layout with a horizontal distance of 50 mm, and are connected to the rectangular tubular crossbeam through bolts. The upper connecting plate 32 and the lower connecting plate 33 of the flying wing beam are designed as a cross-section gradually changing structure through topological optimization.

[0067] It can be understood that the flying wing beam body 31 is perpendicular to the two oppositely arranged trough-shaped longitudinal beam bodies 1 and is located in the middle and rear part of the vehicle frame. It adopts a hollow variable cross-section structure design. This design not only reduces the weight but also improves the structural strength and rigidity. Connection parts are formed on the upper side, lower side, and both end sides of the flying wing beam body 31 to ensure effective connection with other components. The two upper connecting plates 32 of the flying wing beam are respectively connected to the two ends of the upper side of the flying wing beam body 31. The upper connecting plate 32 of the flying wing beam is an L-shaped plate. One end is connected to the upper side of the flying wing beam body 31, and the other end is connected to one end side. The L-shaped design provides additional support points, enhancing the stability and reliability of the connection. Connection holes corresponding to the standard mounting holes 14 on the trough-shaped longitudinal beam body 1 are distributed on the upper connecting plate 32 of the flying wing beam for detachable connection through connecting pieces (such as bolts or screws), ensuring that the flying wing beam assembly module 3 can be firmly fixed on the vehicle frame longitudinal beam while retaining the flexibility of disassembly and maintenance. The two lower connecting plates 33 of the flying wing beam are respectively connected to the two ends of the lower side of the flying wing beam body 31. Similar to the upper connecting plate 32 of the flying wing beam, the lower connecting plate 33 of the flying wing beam is also an L-shaped plate. One end is connected to the lower side of the flying wing beam body 31, and the other end is connected to one end side. These L-shaped connecting plates also have connection holes corresponding to the standard mounting holes 14 on the trough-shaped longitudinal beam body 1 for detachable connection through connecting pieces, further enhancing the stability and rigidity of the entire vehicle frame system.

[0068] The design of the L-shaped connecting plate enables the flying wing beam body 31 to be firmly connected to the trough-shaped longitudinal beam body 1, significantly improving the overall structural rigidity and torsional resistance of the vehicle frame. The hollow variable cross-section flying wing beam body 31 achieves a lightweight design while ensuring strength, which helps improve the fuel efficiency and load capacity of the vehicle. The adoption of a standardized connection hole layout and detachable connection method not only simplifies the assembly process but also facilitates subsequent maintenance and service work. For example, when a certain part needs to be replaced or repaired, there is no need to make large-scale modifications to the entire vehicle frame. All connections are based on the standard mounting holes 14 distributed in a matrix, ensuring high interchangeability between different modules, reducing production costs, and shortening the R & D cycle. The design of the L-shaped connecting plate helps to more evenly distribute the acting forces from different directions, reduce local stress concentration, and extend the service life of the vehicle frame system.

[0069] In some embodiments of the modular vehicle frame assembly of the present invention, referring to Figure 8 as shown, the tail beam assembly module 4 is an integrally stamped structure, including a tail beam body part 41 and connection parts 42 vertically arranged at the four corners of the tail beam body part 41. Connection holes corresponding to the standard mounting holes 14 on the trough-shaped longitudinal beam body 1 are distributed on the connection parts 42 for detachable connection with the trough-shaped longitudinal beam body 1 through connecting pieces.

[0070] It can be understood that the tail beam assembly module 4 is of an integral stamping structure. This design not only simplifies the production process but also ensures the structural consistency and strength. The tail beam body part 41 is located at the tail between two oppositely arranged trough-shaped longitudinal beam bodies 1 and serves as the end support structure of the vehicle frame assembly, playing a role in stabilizing and strengthening. The connecting parts 42 are vertically arranged at the four corners of the tail beam body part 41, forming four connection points to ensure that the tail beam assembly module 4 can be firmly fixed to the vehicle frame. Each connecting part 42 is distributed with connection holes corresponding to the standard mounting holes 14 on the trough-shaped longitudinal beam body 1. These connection holes are used to achieve detachable connection through connecting pieces (such as bolts or screws), which not only ensures the stability of the connection but also retains the flexibility of disassembly and maintenance.

[0071] In the tail beam assembly module 4 of this embodiment, the design of the four-corner connecting parts 42 provides multiple support points, significantly enhancing the connection stiffness between the tail beam assembly module 4 and the trough-shaped longitudinal beam body 1, improving the torsional resistance and overall stability of the entire vehicle frame system. The integral stamping structure reduces the number of parts and assembly processes, lowers the production cost, and improves the production efficiency. At the same time, this design can also ensure the structural consistency and quality stability. All connections are based on the standard mounting holes 14 distributed in a matrix pattern, ensuring high interchangeability between different modules, facilitating quick adjustment and replacement, and shortening the vehicle production and maintenance cycles. The design of the four-corner connecting parts 42 helps to more evenly distribute the acting forces from different directions, reduce local stress concentration, and extend the service life of the vehicle frame system. In addition, it also provides reliable mounting points for the rear suspension and other accessories. The detachable connection method makes the maintenance and replacement of the tail beam assembly module 4 more convenient, without the need for large-scale modification of the entire vehicle frame, reducing the maintenance time and cost.

[0072] On the other hand, the present invention also provides a dump truck, including the modular vehicle frame assembly in any one of the above embodiments. It can be understood that the dump truck of the present invention is applicable to hybrid, fuel, and gas dump trucks. Since the dump truck of the present invention includes a modular vehicle frame assembly, it not only improves the modular level of the whole vehicle but also enhances the versatility of various chassis accessories on different variant vehicles, reducing the R & D, manufacturing, and after-sales costs. By adjusting the number and position of the modules, the design requirements of different vehicle models can be quickly realized, thus better meeting the diverse needs of the market.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A frame longitudinal beam with matrix mounting holes, characterized in that: The invention comprises a grooved longitudinal beam body (1), wherein the grooved longitudinal beam body (1) is integrally stamped and formed, and the grooved longitudinal beam body (1) comprises a longitudinal beam belly panel (11), a longitudinal beam upper wing panel (12) connected to the upper end of the longitudinal beam belly panel (11), and a longitudinal beam lower wing panel (13) connected to the lower end of the longitudinal beam belly panel (11), and the longitudinal beam belly panel (11) is provided with a plurality of standard mounting holes (14) arranged in a matrix, and the standard mounting holes (14) are used for detachably connecting with other components of a vehicle frame assembly.

2. The matrix mounting hole frame rail according to claim 1, characterized in that: The hole diameter of the standard mounting holes (14) is uniformly one of 14.5 mm, 15.5 mm, and 17.5 mm; a plurality of the standard mounting holes (14) are arranged at equal distances on the longitudinal beam web plate (11); in the horizontal direction, the spacing between two adjacent standard mounting holes (14) is 40 to 60 mm; in the vertical direction, the spacing between two adjacent standard mounting holes (14) is 50 to 70 mm.

3. A modular frame assembly, characterized in that: include: A frame longitudinal beam assembly module, the frame longitudinal beam assembly module comprising two frame longitudinal beams arranged opposite to each other, the frame longitudinal beams being the matrix mounting hole frame longitudinal beams according to claim 1 or 2, the grooved longitudinal beam bodies (1) of the two matrix mounting hole frame longitudinal beams being arranged opposite to each other to form the frame longitudinal beam assembly module; A plurality of frame crossbeam assembly modules (2), wherein the frame crossbeam assembly modules (2) are connected between the two grooved longitudinal beam bodies (1), the plurality of frame crossbeam assembly modules (2) are arranged in parallel and are located in the middle of the grooved longitudinal beam body (1), and the two ends of the frame crossbeam assembly modules (2) are respectively detachably connected to standard mounting holes (14) on the two grooved longitudinal beam bodies (1); A wing beam assembly module (3) is connected between the two slotted longitudinal beam bodies (1) and is located in the middle and rear part of the slotted longitudinal beam bodies (1), and two ends of the wing beam assembly module (3) are respectively detachably connected to standard mounting holes (14) on the two slotted longitudinal beam bodies (1); The tail beam assembly module (4) is connected between the two slotted longitudinal beam bodies (1) and is located at the rear of the slotted longitudinal beam bodies (1); the two ends of the tail beam assembly module (4) are respectively detachably connected to the standard mounting holes (14) on the two slotted longitudinal beam bodies (1).

4. The modular frame assembly according to claim 3, characterized in that: The upper end of the longitudinal beam belly plate (11) of the channel-shaped longitudinal beam body (1) is detachably connected to a sub-frame front connecting piece (5), a sub-frame middle connecting piece (6) and a sub-frame rear connecting piece (7), wherein the sub-frame front connecting piece (5), the sub-frame middle connecting piece (6) and the sub-frame rear connecting piece (7) are used to connect to the upper sub-frame; Each of the grooved longitudinal beam bodies (1) is provided with a sub-frame front connecting member (5), and the sub-frame front connecting member (5) is located on one side of all the frame cross beam assembly modules (2) close to the front of the grooved longitudinal beam body (1); each of the grooved longitudinal beam bodies (1) is provided with a plurality of sub-frame middle connecting members (6), and the plurality of sub-frame middle connecting members (6) are distributed at intervals in the middle of the grooved longitudinal beam body (1); and each of the grooved longitudinal beam bodies (1) is provided with two sub-frame rear connecting members (7), and the two sub-frame rear connecting members (7) are located on both sides of the flying wing beam assembly module (3).

5. The modular vehicle frame assembly according to claim 3, characterized in that: L-shaped reinforcing plates (8) are detachably connected to the longitudinal beam web panels (11) of the two opposite longitudinal beam bodies (1), and the L-shaped reinforcing plates (8) extend along the length direction of the longitudinal beam body (1). The plurality of frame crossbeam assembly modules (2) and the wing beam assembly modules (3) are overlapped on the L-shaped reinforcing plates (8).

6. The modular vehicle frame assembly according to claim 3, characterized in that: The front parts of the two opposite channel-shaped longitudinal beam bodies (1) are bent away from each other to form a widened part of the frame longitudinal beam assembly module for accommodating the engine.

7. The modular vehicle frame assembly according to any one of claims 3 to 6, characterized in that: The frame crossbeam assembly module (2) comprises: A crossbeam body (21) is arranged perpendicular to the two opposite trough-shaped longitudinal beam bodies (1), wherein the crossbeam body (21) is composed of a crossbeam web panel, a crossbeam upper wing panel and a crossbeam lower wing panel to form a trough-shaped structure; Two crossbeam upper connecting plates (22) are riveted to the two ends of the crossbeam upper wing panel, respectively; one end of the crossbeam upper connecting plate (22) away from the crossbeam upper wing panel forms a bent portion, and connecting holes corresponding to the standard mounting holes (14) on the grooved longitudinal beam body (1) are distributed on the bent portion, and are used for detachably connecting with the grooved longitudinal beam body (1) via a connecting piece; Two crossbeam lower connecting plates (23) are riveted to the two ends of the crossbeam lower wing panel, respectively. The crossbeam lower connecting plate (23) forms a bent portion at one end away from the crossbeam lower wing panel, and connecting holes corresponding to the standard mounting holes (14) on the grooved longitudinal beam body (1) are distributed on the bent portion, so as to be detachably connected to the grooved longitudinal beam body (1) via a connecting piece.

8. The modular vehicle frame assembly according to any one of claims 3 to 6, characterized in that: The flying wing beam assembly module (3) comprises: A flying wing beam body (31) is arranged perpendicularly to the two opposite groove-shaped longitudinal beam bodies (1); the flying wing beam body (31) is a hollow gradient structure; and connecting parts are formed on the upper side, the lower side and both ends of the flying wing beam body (31); Two wing beam upper connecting plates (32) are respectively connected to the upper ends of the wing beam body (31); the wing beam upper connecting plates (32) are L-shaped plates, respectively connected to the upper side and one end of the wing beam body (31); the wing beam upper connecting plates (32) are provided with connecting holes corresponding to the standard mounting holes (14) on the grooved longitudinal beam body (1), and are used for detachably connecting with the grooved longitudinal beam body (1) via a connecting piece; Two wing beam lower connecting plates (33) are respectively connected to the two ends of the lower side of the wing beam body (31); the wing beam lower connecting plates (33) are L-shaped plates, respectively connected to the lower side and one end of the wing beam body (31); the wing beam lower connecting plates (33) are provided with connecting holes corresponding to the standard mounting holes (14) on the grooved longitudinal beam body (1), and are used for detachably connecting with the grooved longitudinal beam body (1) through a connecting piece.

9. The modular vehicle frame assembly according to any one of claims 3 to 6, characterized in that: The tail beam assembly module (4) is an integrated stamping structure, comprising a tail beam body (41) and connecting parts (42) vertically arranged at four corners of the tail beam body (41), wherein the connecting parts (42) are provided with connecting holes corresponding to the standard mounting holes (14) on the channel-shaped longitudinal beam body (1), and are used for detachably connecting with the channel-shaped longitudinal beam body (1) via a connecting piece.

10. A dump truck, characterized in that: A modular frame assembly comprising any one of claims 3 to 9.

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