A stringer assembly

Abstract

This utility model relates to the field of automotive frame technology and discloses a longitudinal beam assembly, including a main longitudinal beam, a left-side mounting assembly, and a right-side mounting assembly. The core of the main longitudinal beam is the beam body, which has a long, curved structure adapted to the longitudinal arrangement of the vehicle body. The beam body is made of high-strength alloy steel and is integrally formed through stamping and bending processes, possessing excellent strength and toughness. This utility model optimizes the strength distribution of the longitudinal beam assembly by using high-strength alloy steel to manufacture the beam body and rationally arranging reinforcing ribs such as the first hole reinforcing rib, reinforcing rib blocks, first beam side arc-shaped ribs, second beam side arc-shaped ribs, first triangular reinforcing ribs, second triangular reinforcing ribs, and strip-shaped reinforcing rib plates. Under complex working conditions, it can effectively resist deformation and cracking, providing more reliable structural support for the entire vehicle and greatly improving the safety and reliability of the entire vehicle.

Description

Technical Field

[0001] This utility model relates to the field of automotive frame technology, specifically to a longitudinal beam assembly. Background Technology

[0002] The longitudinal beam assembly is a key component of the automotive frame, responsible for supporting the entire vehicle, transmitting longitudinal traction, braking force, and lateral impact force, and also needing to be compatible with the vehicle body and suspension installation. However, existing longitudinal beam assemblies have shortcomings: uneven structural strength distribution, making them prone to local deformation and cracking under complex working conditions (rough roads, heavy loads), threatening the safety of the entire vehicle; poor component compatibility, cumbersome assembly, and difficult subsequent maintenance; and low vehicle model compatibility, requiring redesign for new models, resulting in long development cycles and high costs. Utility Model Content

[0003] (a) Technical problems to be solved.

[0004] To address the shortcomings of existing technologies, this utility model provides a longitudinal beam assembly that, through optimized structural design and the inclusion of specific reinforcing components and connecting structures, solves the problems of unreasonable structural strength distribution, poor adaptability, and low vehicle versatility mentioned in the prior art.

[0005] (ii) Technical solution.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a longitudinal beam assembly, comprising a main longitudinal beam, a left-side mounting component, and a right-side mounting component.

[0007] The core of the main longitudinal beam is the beam body, which has a long, curved structure to fit the longitudinal layout of the car body. The beam body is made of high-strength alloy steel and is integrally formed through stamping and bending processes, possessing excellent strength and toughness. The beam body is equipped with a first hole reinforcing rib, a first beam mounting hole, reinforcing rib blocks, side mounting plates, first beam side arc-shaped ribs, and second beam side arc-shaped ribs. Among them, the first hole reinforcing rib is set around the first beam mounting hole, which can effectively enhance the structural strength around the first beam mounting hole and prevent the hole from deforming or cracking due to stress. The first beam mounting hole is a standardized through hole, and its size and spacing strictly follow the industry standard, which can accommodate the bolt connection requirements of various body and suspension components. The reinforcing rib blocks, side mounting plates, first beam side arc-shaped ribs, and second beam side arc-shaped ribs are all integrally formed with the beam body, improving the overall strength and deformation resistance of the main longitudinal beam from multiple dimensions, enabling the main longitudinal beam to stably bear and distribute the load of the entire vehicle, while providing a reliable mounting base for other components such as the body and suspension.

[0008] The left-side mounting assembly consists of a left-side support, a left-side connecting bracket, a left-side mounting frame, a first triangular reinforcing rib, and a second triangular reinforcing rib. It is assembled on the left side of the main longitudinal beam to connect to the left-side vehicle body or suspension components. The left-side support is welded to the left side of the main longitudinal beam, providing a stable mounting base for the left-side connecting bracket. The left-side connecting bracket is bolted to the left-side support, facilitating installation and disassembly for later maintenance. The left-side mounting frame is welded to the end of the left-side connecting bracket, serving as an interface for direct connection to the left-side vehicle body or suspension components. The first and second triangular reinforcing ribs are welded at the angles between the left-side support and the main longitudinal beam, and between the left-side connecting bracket and the left-side mounting frame, respectively. Utilizing the stability of the triangular structure, the strength of each connection point of the left-side mounting assembly is enhanced, effectively dispersing local stress and preventing damage due to concentrated stress.

[0009] The right-side mounting assembly consists of a right-side support base, a right-side U-shaped connecting bracket, and a strip-shaped reinforcing rib. It is assembled on the right side of the main longitudinal beam and is used to connect the right side of the vehicle body or suspension components. The right-side support base is fixed to the right side of the main longitudinal beam by welding, providing installation support for the right-side U-shaped connecting bracket. The right-side U-shaped connecting bracket is snapped onto the right-side support base and secured with bolts. This connection method combines assembly efficiency and connection strength. The strip-shaped reinforcing rib is welded to the gap between the right-side U-shaped connecting bracket and the main longitudinal beam, which can fill the gap, improve the overall load-bearing capacity of the right-side mounting assembly, and prevent the connection between the right-side U-shaped connecting bracket and the main longitudinal beam from deforming due to stress.

[0010] As a further improvement of this utility model, the first beam mounting hole on the main longitudinal beam adopts a standardized design, and its dimensions, tolerances, spacing and other parameters are strictly adapted to the mounting interfaces of mainstream body and suspension components. At the same time, the length of the main longitudinal beam can be adjusted according to the wheelbase requirements of different models, and the welding positions of the left and right mounting components on the main longitudinal beam can also be flexibly changed. In this way, the longitudinal beam assembly can be adapted to a variety of models from A0 class to B class, achieving platform universality, greatly shortening the development cycle of new models and reducing development costs.

[0011] As a further improvement of this utility model: the ends of the left connecting bracket and the left mounting bracket, as well as the parts where the right U-shaped connecting bracket connects to the external components, are all provided with mounting interfaces adapted to the vehicle body and suspension components. These mounting interfaces adopt bolt connection. To ensure connection accuracy, positioning pins can also be used at the connection points. Positioning pins can limit the relative displacement between components, making the bolt connection more precise and stable. This not only improves assembly efficiency but also facilitates component replacement during later maintenance. In addition, the first triangular reinforcing rib and the second triangular reinforcing rib are made of the same high-strength steel plate as the main longitudinal beam. After being welded with the corresponding components, they form a triangular support structure, which can effectively disperse local stress and improve the fatigue resistance of the left mounting components.

[0012] As a further improvement of this utility model: the U-shaped opening size of the right-side U-shaped connecting bracket is precisely matched with the outer dimensions of the right-side support seat, ensuring that the right-side U-shaped connecting bracket can be stably snapped onto the right-side support seat. The strip reinforcing rib plate has an arc-shaped structure, and its arc curvature is consistent with the bending arc of the main longitudinal beam. After welding, the strip reinforcing rib plate, the right-side U-shaped connecting bracket, and the main longitudinal beam together form a closed force-bearing structure. This structure can significantly improve the fatigue resistance of the right-side mounting component, so that the right-side mounting component can maintain good structural stability under long-term alternating loads.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses high-strength alloy steel to make the main longitudinal beam body, and rationally arranges the first hole reinforcing rib, reinforcing rib block, first beam side arc-shaped rib, second beam side arc-shaped rib, as well as the first triangular reinforcing rib, second triangular reinforcing rib, strip reinforcing rib plate and other reinforcing components, thereby optimizing the strength distribution of the longitudinal beam assembly. Under complex working conditions, it can effectively resist deformation and cracking, provide more reliable structural support for the whole vehicle, and greatly improve the safety and reliability of the whole vehicle.

[0015] 2. This utility model adopts a standardized first beam mounting hole design and a bolt + positioning pin connection method, which improves the compatibility of the longitudinal beam assembly with the body, suspension and other components. The assembly efficiency is more than 30% higher than that of the traditional longitudinal beam assembly. At the same time, the platform design of the main longitudinal beam makes it compatible with a variety of models, shortens the development cycle of new models, reduces development costs, and facilitates later maintenance, which can effectively improve production and maintenance efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of the entire utility model;

[0017] Figure 2 This is the overall front view of the present invention;

[0018] Figure 3 This is an overall bottom view of the present invention;

[0019] Figure 4 This is a top view of the entire utility model.

[0020] In the diagram: 1. Main longitudinal beam; 2. Left side mounting component; 3. Right side mounting component; 11. Beam body; 12. First hole reinforcement; 13. First beam mounting hole; 14. Reinforcement block; 15. Side assembly plate; 16. First beam side arc-shaped reinforcement; 17. Second beam side arc-shaped reinforcement; 21. Left side support; 22. Left side connecting bracket; 23. Left side assembly frame; 24. First triangular reinforcement; 25. Second triangular reinforcement; 31. Right side support; 32. Right side U-shaped connecting bracket; 33. Strip reinforcement plate. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1-4 In this embodiment of the utility model, a longitudinal beam assembly includes a main longitudinal beam 1, a left-side mounting component 2, and a right-side mounting component 3.

[0025] The core of the main longitudinal beam 1 is the beam body 11, which has a long, curved structure to fit the longitudinal layout of the car body. The beam body 11 is made of high-strength alloy steel and is integrally formed through stamping and bending processes, possessing excellent strength and toughness. The beam body 11 is provided with a first hole reinforcing rib 12, a first beam mounting hole 13, a reinforcing rib block 14, a side mounting plate 15, a first beam side arc-shaped rib 16, and a second beam side arc-shaped rib 17. Among them, the first hole reinforcing rib 12 is arranged around the first beam mounting hole 13, which can effectively strengthen the periphery of the first beam mounting hole 13. To enhance structural strength and prevent deformation and cracking of the holes due to stress, the first beam mounting hole 13 is a standardized through hole, whose size and spacing strictly follow industry standards. It can adapt to the bolt connection requirements of various body and suspension components. The reinforcing rib 14, side mounting plate 15, first beam side arc rib 16 and second beam side arc rib 17 are all integrally formed with the beam body 11, improving the overall strength and deformation resistance of the main longitudinal beam 1 from multiple dimensions. This enables the main longitudinal beam 1 to stably bear and distribute the vehicle load, while providing a reliable mounting base for other components such as the body and suspension.

[0026] The left mounting component 2 consists of a left support base 21, a left connecting bracket 22, a left assembly frame 23, a first triangular reinforcing rib 24, and a second triangular reinforcing rib 25. It is assembled on the left side of the main longitudinal beam 1 to connect to the left side of the vehicle body or suspension components. The left support base 21 is fixed to the left side of the main longitudinal beam 1 by welding, providing a stable mounting base for the left connecting bracket 22. The left connecting bracket 22 and the left support base 21 are bolted together, facilitating installation and disassembly during later maintenance. The left assembly frame 23 is welded to the end of the left connecting bracket 22, serving as an interface for direct connection to the left side of the vehicle body or suspension components. The first triangular reinforcing rib 24 and the second triangular reinforcing rib 25 are welded at the angles between the left support base 21 and the main longitudinal beam 1, and between the left connecting bracket 22 and the left assembly frame 23, respectively. Utilizing the stability of the triangular structure, the strength of each connection point of the left mounting component 2 is enhanced, effectively dispersing local stress and preventing damage to the connection points due to concentrated stress.

[0027] The right-side mounting assembly 3 consists of a right-side support base 31, a right-side U-shaped connecting bracket 32, and a strip-shaped reinforcing rib plate 33. It is assembled on the right side of the main longitudinal beam 1 and is used to connect the right side of the vehicle body or suspension components. The right-side support base 31 is fixed to the right side of the main longitudinal beam 1 by welding, providing installation support for the right-side U-shaped connecting bracket 32. The right-side U-shaped connecting bracket 32 ​​is snapped onto the right-side support base 31 and fastened with bolts. This connection method combines assembly efficiency and connection strength. The strip-shaped reinforcing rib plate 33 is welded at the gap between the right-side U-shaped connecting bracket 32 ​​and the main longitudinal beam 1, which can fill the gap, improve the overall load-bearing capacity of the right-side mounting assembly 3, and prevent the connection between the right-side U-shaped connecting bracket 32 ​​and the main longitudinal beam 1 from deforming due to stress.

[0028] The first beam mounting hole 13 on the main longitudinal beam 1 adopts a standardized design, and its dimensions, tolerances, spacing and other parameters are strictly adapted to the mounting interfaces of mainstream body and suspension components. At the same time, the length of the main longitudinal beam 1 can be adjusted according to the wheelbase requirements of different models. The welding positions of the left mounting component 2 and the right mounting component 3 on the main longitudinal beam 1 can also be flexibly changed. In this way, the longitudinal beam assembly can be adapted to a variety of models from A0 class to B class, realizing platform universality, greatly shortening the development cycle of new models and reducing development costs.

[0029] The ends of the left connecting bracket 22 and the left mounting bracket 23, as well as the parts where the right U-shaped connecting bracket 32 ​​connects to the external components, are all equipped with mounting interfaces adapted to the body and suspension components. These mounting interfaces are bolted together. To ensure connection accuracy, locating pins can also be used at the connection points. The locating pins can limit the relative displacement between components, making the bolt connection more precise and stable. This not only improves assembly efficiency but also facilitates component replacement during later maintenance. In addition, the first triangular reinforcing rib 24 and the second triangular reinforcing rib 25 are made of the same high-strength steel plate as the main longitudinal beam 1. After being welded to the corresponding components, they form a triangular support structure, which can effectively disperse local stress and improve the fatigue resistance of the left mounting component 2.

[0030] The U-shaped opening size of the right-side U-shaped connecting bracket 32 ​​is precisely matched with the outer dimensions of the right-side support base 31, ensuring that the right-side U-shaped connecting bracket 32 ​​can be stably snapped onto the right-side support base 31. The strip reinforcing rib plate 33 has an arc-shaped structure, and its arc curvature is consistent with the bending arc of the main longitudinal beam 1. After welding, the strip reinforcing rib plate 33, the right-side U-shaped connecting bracket 32, and the main longitudinal beam 1 together form a closed force-bearing structure. This structure can significantly improve the fatigue resistance of the right-side mounting component 3, so that the right-side mounting component 3 can maintain good structural stability under long-term alternating loads.

[0031] The working principle of this utility model is as follows: When the vehicle is moving, the main longitudinal beam 1, as the core load-bearing component, transmits the traction force generated by the engine to the main longitudinal beam 1 through the suspension system during vehicle acceleration. The main longitudinal beam 1 then distributes the traction force to the vehicle floor via the first beam mounting hole 13, thereby driving the vehicle forward. When the vehicle brakes, the braking force acts in the opposite direction on the main longitudinal beam 1. The main longitudinal beam 1 can effectively bear the braking force and stabilize the vehicle body posture through its own structural strength, preventing the vehicle from nose-diving violently. When the vehicle turns, the lateral force applied by the ground is transmitted to the left side of the suspension system. The lateral force is transferred to the side of the vehicle body by mounting component 2 or the right-side mounting component 3, with the left-side connecting bracket 22 and the right-side U-shaped connecting bracket 32. The main longitudinal beam 1 simultaneously disperses the lateral force, keeping the vehicle body tilt within a reasonable range and ensuring the vehicle's driving stability. The first triangular reinforcing rib 24, the second triangular reinforcing rib 25, and the strip reinforcing rib plate 33, among other reinforcing components, strengthen the rigidity of the welded parts and connecting brackets in the force transmission path, effectively resisting deformation and ensuring that the longitudinal beam assembly maintains a reliable working condition during long-term vehicle use, thus extending the service life of the longitudinal beam assembly.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A longitudinal beam assembly, comprising a main longitudinal beam (1), a left-side mounting assembly (2), and a right-side mounting assembly (3), characterized in that: The main longitudinal beam (1) includes a beam body (11), which is a long strip curved structure. The beam body (11) is provided with a first hole reinforcing rib (12), a first beam mounting hole (13), a reinforcing rib block (14), a side assembly plate (15), a first beam side arc-shaped rib (16), and a second beam side arc-shaped rib (17). The left mounting component (2) includes a left support base (21), a left connecting bracket (22), a left assembly frame (23), a first triangular reinforcing rib (24), and a second triangular reinforcing rib (25), which are assembled on the left side of the main longitudinal beam (1); The right-side mounting assembly (3) includes a right-side support base (31), a right-side U-shaped connecting bracket (32), and a strip-shaped reinforcing rib plate (33), and is mounted on the right side of the main longitudinal beam (1).

2. The longitudinal beam assembly according to claim 1, characterized in that: The beam body (11) of the main longitudinal beam (1) is made of high-strength alloy steel and formed by stamping and bending processes. The first hole reinforcing rib (12) is arranged around the first beam mounting hole (13). The reinforcing rib block (14), the side assembly plate (15), the first beam side arc rib (16) and the second beam side arc rib (17) are integrally formed with the beam body (11).

3. The longitudinal beam assembly according to claim 1, characterized in that: The left support seat (21) is welded and fixed to the left side of the main longitudinal beam (1). The left connecting bracket (22) is bolted to the left support seat (21). The left assembly frame (23) is welded to the end of the left connecting bracket (22). The first triangular reinforcing rib (24) and the second triangular reinforcing rib (25) are respectively welded to the angle between the left support seat (21) and the main longitudinal beam (1) and between the left connecting bracket (22) and the left assembly frame (23).

4. A longitudinal beam assembly according to claim 1, characterized in that: The right support seat (31) is welded and fixed to the right side of the main longitudinal beam (1), the right U-shaped connecting bracket (32) is snapped into the right support seat (31) and fastened with bolts, and the strip reinforcing rib plate (33) is welded to the gap between the right U-shaped connecting bracket (32) and the main longitudinal beam (1).

5. A longitudinal beam assembly according to claim 1, characterized in that: The first beam mounting hole (13) on the main longitudinal beam (1) is a standardized through hole.

6. A longitudinal beam assembly according to claim 1, characterized in that: The ends of the left connecting bracket (22) and the left mounting bracket (23) are provided with installation interfaces that are compatible with the vehicle body and suspension components. The first triangular reinforcing rib (24) and the second triangular reinforcing rib (25) are high-strength steel plates.

7. A longitudinal beam assembly according to claim 1, characterized in that: The U-shaped opening size of the right-side U-shaped connecting bracket (32) is adapted to the right-side support seat (31), and the strip-shaped reinforcing rib plate (33) is an arc-shaped structure that fits the curvature of the main longitudinal beam (1).

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