Off-road vehicle frame and vehicle with dual-channel force transmission structure

Abstract

The present application relates to an off-road vehicle frame and a vehicle with a dual-channel force transmission structure, and belongs to the technical field of off-road vehicle frames. The off-road vehicle frame includes: a frame longitudinal beam, which includes a left longitudinal beam front section assembly and a right longitudinal beam front section assembly that are spaced and symmetrically arranged, the left longitudinal beam front section assembly is connected to a lower arm left rear mounting bracket assembly, and the right longitudinal beam front section assembly is connected to a lower arm right rear mounting bracket assembly; a frame cross beam, which includes a rear mounting cross beam assembly connected between the left longitudinal beam front section assembly and the right longitudinal beam front section assembly, and a front suspension rear cross beam that is arranged at a height difference with the rear mounting cross beam assembly and is respectively connected to the lower arm left rear mounting bracket assembly and the lower arm right rear mounting bracket assembly at both ends. The present application forms a dual-channel force transmission path when a side collision occurs, improves the stiffness and force of the frame, and reduces the threat to the life safety of the occupants in the vehicle and the risk of vehicle damage when the vehicle is subjected to a lateral impact force.

Description

Technical Field

[0001] The present application relates to the technical field of off-road vehicle frames, and in particular to an off-road vehicle frame and a vehicle with a dual-channel force transmission structure. Background Art

[0002] Off-road vehicles usually adopt a non-load-bearing structure. The body, engine, transmission, front and rear axles, suspension and other assemblies and components are fixed on the frame. The frame is a bridge-like structure that spans the chassis of the off-road vehicle and is the foundation and skeleton of the entire off-road vehicle. The function of the frame is to fix the various assemblies to keep them in the correct relative position, while meeting the requirements of the overall layout of the vehicle, the vehicle's load-bearing capacity, and the arrangement of man and machine.

[0003] Off-road vehicles are usually used in harsh road conditions, and need to travel on grade roads, rural dirt roads, and roadless areas (such as undulating, muddy, snowy, sandy, jungle roads, etc.), which requires very high structural strength of the frame. The structural design of the frame must meet the requirements of practicality and reliability, and also be easy to manufacture and have good economy.

[0004] The frame is an important part of off-road vehicles. The choice of frame structure is related to the performance of off-road vehicles in all aspects. The frame of off-road vehicles usually adopts a side beam frame structure. The future development trend of the frame is: simple structure, lightweight, low material cost, strength and rigidity that can meet the use requirements. The existing passenger car frame assembly meets the above trends in terms of structure and materials, but it is very difficult to ensure that the strength and rigidity can meet the design requirements on the basis of feasible layout.

[0005] Especially for off-road vehicles with non-load-bearing bodies, it is not easy to ensure a simple structure due to the high trafficability and layout requirements of the whole vehicle. It also has to meet the harsh working conditions when driving on unpaved roads, and has higher requirements for strength and rigidity. Under this premise, relying on the whole vehicle project, based on existing materials and process technologies, a frame assembly suitable for off-road vehicles with non-load-bearing bodies is designed to meet the use requirements of this type of vehicle.

[0006] In the related art, the side collision force transmission direction of the off-road vehicle frame is single, the stress generated by the side collision force is relatively concentrated, and the load-bearing capacity of the side collision resistance is weak, which is easy to damage the vehicle and threaten the safety of the passengers in the vehicle. The torsional force is only supported by a single crossbeam. In the case of complex road conditions or excessive torsional force, the crossbeam is prone to deformation or weld cracking, etc., causing serious damage to the vehicle. Summary of the invention

[0007] The embodiment of the present application provides an off-road vehicle frame and a vehicle with a dual-channel force transmission structure to solve the problem in the related art that the off-road vehicle frame has a single force transmission direction in a side collision, the stress generated by the side collision force is relatively concentrated, the bearing capacity against the side collision is weak, and it is easy to cause damage to the vehicle and threaten the safety of the passengers in the vehicle.

[0008] In a first aspect, an embodiment of the present application provides an off-road vehicle frame with a dual-channel force transmission structure, comprising:

[0009] A frame longitudinal beam, the frame longitudinal beam comprising a left longitudinal beam front section assembly and a right longitudinal beam front section assembly which are spaced apart and symmetrically arranged, the left longitudinal beam front section assembly is connected to a lower swing arm left rear mounting bracket assembly, and the right longitudinal beam front section assembly is connected to a lower swing arm right rear mounting bracket assembly;

[0010] A frame crossbeam, the frame crossbeam comprising a rear mounting crossbeam assembly connected between a left longitudinal beam front section assembly and a right longitudinal beam front section assembly, and a front suspension rear crossbeam which is arranged at a height difference with the rear mounting crossbeam assembly and whose two ends are respectively connected to a left rear mounting bracket assembly of a lower control arm and a right rear mounting bracket assembly of a lower control arm.

[0011] When the off-road vehicle frame of the present application is subject to a side collision, when the side impact force acts on the left longitudinal beam front section assembly, the impact force is divided into two release paths, wherein the first release path transfers the impact force from the left longitudinal beam front section assembly and the rear-mounted cross beam assembly to the right longitudinal beam front section assembly, thereby completing the transmission and release of the side impact force.

[0012] The second release path transfers the impact force from the front section of the left longitudinal beam, the left rear mounting bracket assembly of the lower arm, the rear crossbeam of the front suspension, and the right rear mounting bracket assembly of the lower arm to the front section of the right longitudinal beam, completing the transmission and release of the side impact force, thereby forming a dual-channel force transmission path. The rigidity and force of the frame are improved, and the threat to the life safety of the occupants and the risk of vehicle damage are reduced when the vehicle is subjected to side impact force.

[0013] In some embodiments: the lower arm left rear mounting bracket assembly is located at the bottom of the left longitudinal beam front section assembly and extends obliquely downward toward the right longitudinal beam front section assembly;

[0014] The lower swing arm right rear mounting bracket assembly is located at the bottom of the right longitudinal beam front section assembly and extends obliquely downward toward the direction of the left longitudinal beam front section assembly.

[0015] In some embodiments: both ends of the rear cross beam of the front suspension are detachably fixedly connected to the left rear mounting bracket assembly of the lower control arm and the right rear mounting bracket assembly of the lower control arm through fasteners.

[0016] In some embodiments: a column vertically connected to the rear mounting crossbeam assembly is provided on the top of the front suspension rear crossbeam, and the left longitudinal beam front section assembly, the right longitudinal beam front section assembly, the rear mounting crossbeam assembly, the lower arm left rear mounting bracket assembly, the lower arm right rear mounting bracket assembly, the front suspension rear crossbeam and the column form a closed "sun" shaped structure.

[0017] In some embodiments: the rear cross beam and the column of the front suspension are integrally stamped and welded or integrally cast structures of aluminum alloy materials, and the top of the column is detachably fixedly connected to the rear mounting cross beam assembly via fasteners.

[0018] In some embodiments: the rear-mounted cross beam assembly is a "〔"-shaped structure with its opening facing downward, and both ends of the rear-mounted cross beam assembly are respectively located at the top of the left longitudinal beam front section assembly and the right longitudinal beam front section assembly and are welded to the left longitudinal beam front section assembly and the right longitudinal beam front section assembly.

[0019] In some embodiments: the left rear mounting bracket assembly of the lower control arm is welded to the bottom of the left longitudinal beam front section assembly, and the right rear mounting bracket assembly of the lower control arm is welded to the bottom of the right longitudinal beam front section assembly.

[0020] In some embodiments: the lower control arm left rear mounting bracket assembly, the lower control arm right rear mounting bracket assembly, the rear mounting cross beam assembly, the left longitudinal beam front section assembly and the right longitudinal beam front section assembly are all hot-formed steel stamping parts.

[0021] In some embodiments: the frame cross beam further comprises a front mounting cross beam assembly located at the front portion of the rear mounting cross beam assembly and connected between the left longitudinal beam front section assembly and the right longitudinal beam front section assembly;

[0022] The front mounting cross beam assembly is a "〔"-shaped structure with an opening facing upward, and a lower swing arm left front mounting bracket assembly and a lower swing arm right front mounting bracket assembly are respectively provided at the bottom of both ends of the front mounting cross beam assembly.

[0023] A second aspect of the embodiments of the present application provides a vehicle, comprising: an off-road vehicle frame using the dual-channel force transmission structure described in any of the above embodiments.

[0024] The beneficial effects of the technical solution provided by this application include:

[0025] The embodiment of the present application provides an off-road vehicle frame and a vehicle with a dual-channel force transmission structure. Since the off-road vehicle frame of the present application is provided with a frame longitudinal beam, the frame longitudinal beam includes a left longitudinal beam front section assembly and a right longitudinal beam front section assembly that are spaced and symmetrically arranged, the left longitudinal beam front section assembly is connected to a lower arm left rear mounting bracket assembly, and the right longitudinal beam front section assembly is connected to a lower arm right rear mounting bracket assembly; a frame cross beam, the frame cross beam includes a rear mounting cross beam assembly connected between the left longitudinal beam front section assembly and the right longitudinal beam front section assembly, and a front suspension rear cross beam that is arranged at a height difference with the rear mounting cross beam assembly and has two ends respectively connected to the lower arm left rear mounting bracket assembly and the lower arm right rear mounting bracket assembly.

[0026] Therefore, when the off-road vehicle frame of the present application is subjected to a side collision, when the side impact force acts on the front section assembly of the left longitudinal beam, the impact force is divided into two release paths, wherein the first release path transfers the impact force from the front section assembly of the left longitudinal beam and the rear mounting crossbeam assembly to the front section assembly of the right longitudinal beam, completing the transmission and release of the side impact force. The second release path transfers the impact force from the front section assembly of the left longitudinal beam, the left rear mounting bracket assembly of the lower swing arm, the rear crossbeam of the front suspension, and the right rear mounting bracket assembly of the lower swing arm to the front section assembly of the right longitudinal beam, completing the transmission and release of the side impact force, thereby forming a dual-channel force transmission path. The rigidity and stress of the frame are improved, and the threat to the life safety of the occupants and the risk of vehicle damage when the vehicle is subjected to a side impact force are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a top view of the structure of the off-road vehicle frame according to an embodiment of the present application;

[0029] Figure 2 for Figure 1 A cross-sectional view along the square AA;

[0030] Figure 3 This is a schematic diagram of the impact force transmission of the side collision of the off-road vehicle frame in the embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of torsional force transmission when the off-road vehicle frame is subjected to torsional force in an embodiment of the present application.

[0032] Reference numerals:

[0033] 1. Left longitudinal beam front section assembly; 2. Rear mounting cross beam assembly; 3. Right longitudinal beam front section assembly; 4. Front suspension rear cross beam; 5. Lower arm left rear mounting bracket assembly; 6. Lower arm right rear mounting bracket assembly; 7. Upright column; 8. Fasteners; 9. Front mounting cross beam assembly. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] The embodiment of the present application provides an off-road vehicle frame and a vehicle with a dual-channel force transmission structure, which can solve the problem in the related art that the off-road vehicle frame has a single force transmission direction in a side collision, the stress generated by the side collision force is relatively concentrated, the bearing capacity against the side collision is weak, it is easy to cause damage to the vehicle, and threaten the safety of the passengers in the vehicle.

[0036] See also Figure 1 and Figure 2 As shown, the first aspect of the embodiment of the present application provides an off-road vehicle frame with a dual-channel force transmission structure, comprising:

[0037] The frame longitudinal beam comprises a left longitudinal beam front section assembly 1 and a right longitudinal beam front section assembly 3 which are spaced apart and symmetrically arranged, the left longitudinal beam front section assembly 1 is connected with a lower swing arm left rear mounting bracket assembly 5, and the right longitudinal beam front section assembly 3 is connected with a lower swing arm right rear mounting bracket assembly 6. The lower swing arm left rear mounting bracket assembly 5 and the lower swing arm right rear mounting bracket assembly 6 are used to respectively mount the lower swing arms.

[0038] The frame cross beam includes a rear mounting cross beam assembly 2 connected between a left longitudinal beam front section assembly 1 and a right longitudinal beam front section assembly 3, and a front suspension rear cross beam 4 which is arranged at a height difference with the rear mounting cross beam assembly 2 and whose two ends are respectively connected to a lower control arm left rear mounting bracket assembly 5 and a lower control arm right rear mounting bracket assembly 6.

[0039] The left longitudinal beam front section assembly, the right longitudinal beam front section assembly, the rear mounting cross beam assembly, the lower arm left rear mounting bracket assembly, the lower arm right rear mounting bracket assembly, and the front suspension rear cross beam of the embodiment of the present application form a closed "mouth" shaped structure. When the off-road vehicle frame is hit from the side, when the side impact force acts on the left longitudinal beam front section assembly 1, the impact force is divided into two release paths, wherein the first release path transfers the impact force from the left longitudinal beam front section assembly 1 and the rear mounting cross beam assembly 2 to the right longitudinal beam front section assembly 3, completing the transmission and release of the side impact force.

[0040] The second release path transfers the impact force from the left longitudinal beam front section assembly 1, the lower arm left rear mounting bracket assembly 5, the front suspension rear crossbeam 4, and the lower arm right rear mounting bracket assembly 6 to the right longitudinal beam front section assembly 3, completing the transmission and release of the side impact force, thereby forming a dual-channel force transmission path. The rigidity and force of the frame are improved, and the threat to the life safety of the occupants and the risk of vehicle damage when the vehicle is subjected to side impact force are reduced.

[0041] In some alternative embodiments: See Figure 1 and Figure 2 As shown, the embodiment of the present application provides an off-road vehicle frame with a dual-channel force transmission structure, wherein the lower arm left rear mounting bracket assembly 5 of the off-road vehicle frame is located at the bottom of the left longitudinal beam front section assembly 1 and extends obliquely downward in the direction of the right longitudinal beam front section assembly 3. The lower arm right rear mounting bracket assembly 6 is located at the bottom of the right longitudinal beam front section assembly 3 and extends obliquely downward in the direction of the left longitudinal beam front section assembly 1. The two ends of the front suspension rear cross beam 4 are detachably fixedly connected to the lower arm left rear mounting bracket assembly 5 and the lower arm right rear mounting bracket assembly 6 through fasteners 8.

[0042] The left rear mounting bracket assembly 5 of the lower swing arm is located at the bottom of the left longitudinal beam front section assembly 1 and extends obliquely downward in the direction of the right longitudinal beam front section assembly 3. A triangular structure is formed between the left rear mounting bracket assembly 5 of the lower swing arm and the rear mounting cross beam assembly 2, which is convenient for dispersing the lateral impact force of the left longitudinal beam front section assembly 1 to the rear mounting cross beam assembly 2 and the front suspension rear cross beam 4. The right rear mounting bracket assembly 6 of the lower swing arm is located at the bottom of the right longitudinal beam front section assembly 3 and extends obliquely downward in the direction of the left longitudinal beam front section assembly 1. A triangular structure is formed between the right rear mounting bracket assembly 6 of the lower swing arm and the rear mounting cross beam assembly 2, which is convenient for dispersing the lateral impact force of the right longitudinal beam front section assembly 3 to the rear mounting cross beam assembly 2 and the front suspension rear cross beam 4.

[0043] The two ends of the front suspension rear cross beam 4 are detachably fixedly connected to the lower arm left rear mounting bracket assembly 5 and the lower arm right rear mounting bracket assembly 6 through fasteners 8. It is convenient to repair and replace the front suspension rear cross beam 4 after it is crushed and deformed by the lateral impact force. The front suspension rear cross beam 4 is made of aluminum alloy material, which has anti-corrosion performance while realizing the lightweight of the off-road vehicle frame, thereby improving the service life of the off-road vehicle frame.

[0044] At the top of the rear cross member 4 of the front suspension, there is a column 7 vertically connected to the rear mounting cross member assembly 2. The front section assembly 1 of the left longitudinal beam, the front section assembly 3 of the right longitudinal beam, the rear mounting cross member assembly 2, the left rear mounting bracket assembly 5 of the lower control arm, the right rear mounting bracket assembly 6 of the lower control arm, the rear cross member 4 of the front suspension and the column 7 form a closed "day" - shaped structure. The rear cross member 4 of the front suspension and the column 7 are integrally formed by stamping and welding or integrally casting of aluminum alloy material. There is a detachable fixed connection between the top of the column 7 and the rear mounting cross member assembly 2 through a fastener 8. The front section assembly 1 of the left longitudinal beam, the front section assembly 3 of the right longitudinal beam, the rear mounting cross member assembly 2, the left rear mounting bracket assembly 5 of the lower control arm, the right rear mounting bracket assembly 6 of the lower control arm, the rear cross member 4 of the front suspension and the column 7 of the present application are all hollow structures, realizing lightweight design while ensuring the structural strength of the off - road vehicle frame.

[0045] The rear mounting cross member assembly 2 is in a "〔" - shaped structure with the opening facing down. The two ends of the rear mounting cross member assembly 2 are respectively located at the tops of the front section assembly 1 of the left longitudinal beam and the front section assembly 3 of the right longitudinal beam and are welded to the front section assembly 1 of the left longitudinal beam and the front section assembly 3 of the right longitudinal beam. The left rear mounting bracket assembly 5 of the lower control arm is welded to the bottom of the front section assembly 1 of the left longitudinal beam, and the right rear mounting bracket assembly 6 of the lower control arm is welded to the bottom of the front section assembly 3 of the right longitudinal beam. The left rear mounting bracket assembly 5 of the lower control arm and the right rear mounting bracket assembly 6 of the lower control arm can not only be used to install the lower control arm of the vehicle frame as the mounting fulcrum of the lower control arm, but also serve as the connection structure of the rear mounting cross member assembly 2, simplifying the structure of the off - road vehicle frame, reducing the overall weight of the off - road vehicle frame and realizing lightweight design.

[0046] See Figure 3 and Figure 4 As shown in

[0047] and

[0048] Then, the horizontal force continues to be transmitted in the horizontal direction, and is then transmitted from the front suspension rear cross beam 4 to the lower control arm right rear mounting bracket assembly 6, and from the lower control arm right rear mounting bracket assembly 6 to the right longitudinal beam front section assembly 3. The lateral impact force continues to be transmitted and gradually decreases, and the horizontal force is released. At this time, all forces are released to reduce the lateral impact force from invading the vehicle interior space and protect the safety of the occupants in the vehicle.

[0049] When the vehicle is subjected to a torsional force in the Z direction, the rear mounting crossbeam assembly 2, the left rear mounting bracket assembly 5 of the lower control arm, the right rear mounting bracket assembly 6 of the lower control arm, and the front suspension rear crossbeam 4 simultaneously act on the left longitudinal beam front section assembly 1 and the right longitudinal beam front section assembly 3, and the force acting on the front suspension rear crossbeam 4 can be transmitted to the rear mounting crossbeam assembly 2 through its own column 7 structure, so that a part of the stress on the front suspension rear crossbeam 4 is transmitted to the rear mounting crossbeam assembly 2, which greatly reduces the force on the front suspension rear crossbeam 4, reduces the stress generated by the torsional force acting on the front suspension rear crossbeam 4, and prevents the frame from deforming and the weld from cracking.

[0050] This application combines the overall stress conditions of the vehicle, changes the traditional single-channel force transmission beam structure, adopts a double-channel force transmission beam structure, forms a double-load matrix unit, and the double-channel beam structure design with overlapping distribution in the Z-direction space makes the vehicle's side Y-direction collision impact force and Z-direction space multi-dimensional force transmission, and the overall force is divergent and propagated, thereby improving the overall structural strength and rigidity. It solves the problem that the traditional frame can withstand small lateral impact force and Z-direction torsional force, improves the rigidity and stress conditions of the frame, and reduces the threat to the life safety of the occupants and the risk of vehicle damage when the vehicle is subjected to lateral impact force and Z-direction torsional force.

[0051] In some alternative embodiments: See Figure 1 and Figure 2 As shown, the embodiment of the present application provides an off-road vehicle frame with a dual-channel force transmission structure, wherein the lower arm left rear mounting bracket assembly 5, the lower arm right rear mounting bracket assembly 6, the rear mounting cross beam assembly 2, the left longitudinal beam front section assembly 1 and the right longitudinal beam front section assembly 3 of the off-road vehicle frame are all hot-formed steel stamping parts. Hot-formed steel refers to a steel plate that is formed once after being heated to 950°C and then rapidly cooled, thereby comprehensively improving the strength of the steel plate, and the yield degree reaches as high as 1000Mpa. The yield degree of the hot-formed steel used in the present application reaches 1600-1800Mpa, which improves the structural strength of the off-road vehicle frame as a whole.

[0052] In some alternative embodiments: See Figure 1 and Figure 2As shown, the embodiment of the present application provides an off-road vehicle frame with a dual-channel force transmission structure, and the frame crossbeam of the off-road vehicle frame also includes a front mounting crossbeam assembly 9 located in front of the rear mounting crossbeam assembly 2 and connected between the left longitudinal beam front section assembly 1 and the right longitudinal beam front section assembly 3. The front mounting crossbeam assembly 9 is a "〔"-shaped structure with an opening facing upward, and the two ends of the front mounting crossbeam assembly 9 are respectively provided with a lower swing arm left front mounting bracket assembly and a lower swing arm right front mounting bracket assembly.

[0053] The front mounting crossbeam assembly 9 and the rear mounting crossbeam assembly 2 cooperate with each other for installing the front motor power system, the left front mounting bracket assembly of the lower swing arm and the left rear mounting bracket assembly of the lower swing arm 5 cooperate with each other for articulating the left lower swing arm, and the right front mounting bracket assembly of the lower swing arm and the right rear mounting bracket assembly of the lower swing arm 6 cooperate with each other for articulating the right lower swing arm.

[0054] A second aspect of an embodiment of the present application provides a car, comprising: an off-road vehicle frame using the dual-channel force transmission structure described in any of the above embodiments, the off-road vehicle frame is equipped with a front motor powertrain and a rear motor powertrain, and a non-load-bearing body mounted on the off-road vehicle frame.

[0055] How it works

[0056] The embodiment of the present application provides an off-road vehicle frame and a vehicle with a dual-channel force transmission structure. Since the off-road vehicle frame of the present application is provided with a frame longitudinal beam, the frame longitudinal beam includes a left longitudinal beam front section assembly 1 and a right longitudinal beam front section assembly 3 that are spaced and symmetrically arranged, the left longitudinal beam front section assembly 1 is connected to a lower arm left rear mounting bracket assembly 5, and the right longitudinal beam front section assembly 3 is connected to a lower arm right rear mounting bracket assembly 6; a frame cross beam, the frame cross beam includes a rear mounting cross beam assembly 2 connected between the left longitudinal beam front section assembly 1 and the right longitudinal beam front section assembly 3, and a front suspension rear cross beam 4 that is arranged at a height difference with the rear mounting cross beam assembly 2 and whose two ends are respectively connected to the lower arm left rear mounting bracket assembly 5 and the lower arm right rear mounting bracket assembly 6.

[0057] Therefore, when the off-road vehicle frame of the present application is subjected to a side collision, when the side impact force acts on the left longitudinal beam front section assembly 1, the impact force is divided into two release paths, wherein the first release path transfers the impact force from the left longitudinal beam front section assembly 1 and the rear mounting crossbeam assembly 2 to the right longitudinal beam front section assembly 3, completing the transmission and release of the side impact force. The second release path transfers the impact force from the left longitudinal beam front section assembly 1, the lower arm left rear mounting bracket assembly 5, the front suspension rear crossbeam 4, and the lower arm right rear mounting bracket assembly 6 to the right longitudinal beam front section assembly 3, completing the transmission and release of the side impact force, thereby forming a dual-channel force transmission path. The rigidity and stress of the frame are improved, and the threat to the life safety of the occupants and the risk of vehicle damage when the vehicle is subjected to a side impact force are reduced.

[0058] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0059] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An off-road vehicle frame with a dual-channel force transmission structure, characterized in that: Comprising: Frame longitudinal beams, the frame longitudinal beams include a left front longitudinal beam assembly (1) and a right front longitudinal beam assembly (3) which are spaced apart and symmetrically arranged, the left front longitudinal beam assembly (1) is connected with a lower swing arm left rear mounting bracket assembly (5), and the right front longitudinal beam assembly (3) is connected with a lower swing arm right rear mounting bracket assembly (6); Frame cross beams, the frame cross beams include a rear mounting cross beam assembly (2) connected between the left front longitudinal beam assembly (1) and the right front longitudinal beam assembly (3), and a front suspension rear cross beam (4) which is arranged at a different height from the rear mounting cross beam assembly (2) and whose two ends are respectively connected with the lower swing arm left rear mounting bracket assembly (5) and the lower swing arm right rear mounting bracket assembly (6); The lower swing arm left rear mounting bracket assembly (5) is located at the bottom of the left front longitudinal beam assembly (1) and extends obliquely downward in the direction of the right front longitudinal beam assembly (3); The lower swing arm right rear mounting bracket assembly (6) is located at the bottom of the right front longitudinal beam assembly (3) and extends obliquely downward in the direction of the left front longitudinal beam assembly (1); The top of the front suspension rear cross beam (4) is provided with a column (7) vertically connected with the rear mounting cross beam assembly (2), and the left front longitudinal beam assembly (1), the right front longitudinal beam assembly (3), the rear mounting cross beam assembly (2), the lower swing arm left rear mounting bracket assembly (5), the lower swing arm right rear mounting bracket assembly (6), the front suspension rear cross beam (4) and the column (7) form a closed "day" - shaped structure.

2. The off - road vehicle frame with a double - channel force - transmission structure according to claim 1, wherein: Both ends of the front suspension rear cross beam (4) are detachably and fixedly connected with the lower swing arm left rear mounting bracket assembly (5) and the lower swing arm right rear mounting bracket assembly (6) respectively through fasteners (8).

3. The off - road vehicle frame with a double - channel force - transmission structure according to claim 1, wherein: The front suspension rear cross beam (4) and the column (7) are integrally formed by stamping and welding or integrally cast from aluminum alloy material, and the top of the column (7) is detachably and fixedly connected with the rear mounting cross beam assembly (2) through fasteners (8).

4. The off - road vehicle frame with a double - channel force - transmission structure according to claim 1, wherein: The rear mounting cross beam assembly (2) is in a "〔" - shaped structure with an opening facing downward, and both ends of the rear mounting cross beam assembly (2) are respectively located at the tops of the left front longitudinal beam assembly (1) and the right front longitudinal beam assembly (3) and are welded to the left front longitudinal beam assembly (1) and the right front longitudinal beam assembly (3).

5. The off - road vehicle frame with a double - channel force - transmission structure according to claim 1, wherein: The lower swing arm left rear mounting bracket assembly (5) is welded to the bottom of the left front longitudinal beam assembly (1), and the lower swing arm right rear mounting bracket assembly (6) is welded to the bottom of the right front longitudinal beam assembly (3).

6. The off - road vehicle frame with a double - channel force - transmission structure according to claim 1, wherein: The lower swing arm left rear mounting bracket assembly (5), the lower swing arm right rear mounting bracket assembly (6), the rear mounting cross beam assembly (2), the left longitudinal beam front section assembly (1) and the right longitudinal beam front section assembly (3) are all hot-formed steel stamping parts.

7. The off-road vehicle frame with a dual-channel force transmission structure as claimed in claim 1, characterized in that: The frame cross beam also includes a front mounting cross beam assembly (9) located in front of the rear mounting cross beam assembly (2) and connected between the left longitudinal beam front section assembly (1) and the right longitudinal beam front section assembly (3); The front mounting crossbeam assembly (9) is a "〔"-shaped structure with an opening facing upwards, and a lower swing arm left front mounting bracket assembly and a lower swing arm right front mounting bracket assembly are respectively provided at the bottom of both ends of the front mounting crossbeam assembly (9).

8. A car, characterized in that: include: An off-road vehicle frame using the dual-channel force transmission structure described in any one of claims 1 to 7.

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