Main beam structure of air suspension system

Abstract

The utility model discloses a main beam structure of an air suspension system, which comprises a main beam body, a bottom plate and a mounting plate which are spliced to form the main beam structure with a closed quadrilateral section, the structure is a sheet metal stamping and welding structure, the splicing surface of the main beam body and the bottom plate is streamlined, and the bottom plate extends along the surface; one end of the main beam body is provided with a shaft hole for connecting an axle, the other end of the main beam body is provided with a bushing for connecting a bracket, the mounting plate is arranged at one end close to the shaft hole for connecting a damping air bag, and the joint of the main beam body and the bottom plate is provided with a closing structure. The technical effects that the structural design is reasonable, connection with all components of the air suspension system is facilitated, and good mechanical performance and stability are achieved are achieved.

Description

A main beam structure for an air suspension system Technical Field

[0001] This application relates to the field of air suspension system structures, and more particularly to a main beam structure for an air suspension system. Background Technology

[0002] In the automotive industry, air suspension systems play a crucial role in enhancing vehicle comfort, handling, and stability. As the automotive industry continues to develop, people's demands for vehicle performance and quality are increasing, and air suspension systems are constantly being improved and innovated. An excellent air suspension system can effectively buffer road bumps, reduce vehicle vibration, and provide passengers with a smoother and more comfortable driving experience, while also contributing to improved vehicle safety and reliability. Throughout the development of the entire automotive industry, advancements in air suspension system technology have driven automobiles towards higher performance and greater comfort.

[0003] In related technologies, patent publication number CN119704959A discloses an air suspension system, which includes an axle, a main beam assembly, a bracket, a shock absorber, and an air spring. The main beam serves as the primary connecting component, and the main beam assembly is fixedly connected to the axle via a welded semi-circular connecting piece. The end of the main beam assembly extends into the bracket and is rotatably connected to the inner wall of the bracket via a cylindrical rotating component. One end of the shock absorber is hinged to the bracket, and the other end is hinged to the connecting piece of the main beam assembly. The shock absorber air spring is installed at the end of the main beam assembly furthest from the bracket. The air suspension system transmits torques between the vehicle body and wheels, such as support force, braking force, and steering force, and reduces the impact of rough roads on the vehicle body, absorbs vibrations generated by wheel movement, ensures vehicle ride comfort, and reduces losses during cargo transportation.

[0004] The traditional main beam structures currently used in the market have obvious defects. The main beam structure uses a guide arm structure made of spring steel, which is relatively heavy. This not only increases the overall weight of the vehicle, leading to increased energy consumption, but may also affect the vehicle's acceleration, braking and other performance. The structure is also not very compact, so there is still room for improvement. Summary of the Invention

[0005] To improve the structural compactness of the main beam structure, this application provides a main beam structure for an air suspension system.

[0006] The main beam structure of the air suspension system provided in this application adopts the following technical solution:

[0007] A main beam structure for an air suspension system includes a main beam body, a base plate, and a mounting plate. The main beam body, base plate, and mounting plate are spliced ​​to form a closed quadrilateral structure. The splicing surface between the main beam body and the base plate is streamlined, and the base plate extends along the splicing surface of the main beam body. One end of the main beam body is provided with a shaft hole for connecting to an axle in the air suspension system. The other end of the main beam body is provided with a bushing for connecting to a bracket in the air suspension system. The mounting plate is located at the end of the main beam body near the shaft hole and is used to connect to the shock absorber airbag in the air suspension system.

[0008] By adopting the above technical solution, the main beam body, bottom plate, and mounting plate are spliced ​​to form a quadrilateral structure with a closed cross section, ensuring the excellent bending and torsional resistance of the main beam. The splicing surface between the main beam body and the bottom plate is designed to be streamlined, and the bottom plate extends along this splicing surface, making the main beam structure compact, the spatial layout reasonable, and the overall appearance beautiful and harmonious. The shaft hole at one end of the main beam body can be connected to the axle in the air suspension system, and the bushing at the other end can be connected to the bracket in the air suspension system. With the mounting plate near the shaft hole for connecting to the shock absorber airbag in the air suspension system, the main beam can be stably connected and function in the air suspension system, so that the overall force is evenly distributed.

[0009] Preferably, the main beam structure is a sheet metal stamping and welding structure.

[0010] By adopting the above technical solutions, the main beam structure can be made lightweight and strong, and costs can be reduced because no complex manufacturing process is required.

[0011] Preferably, the connection between the main beam body and the bottom plate is symmetrically provided with a tapering structure.

[0012] By adopting the above technical solution, the symmetrical setting of the closing structure at the connection between the main beam and the bottom plate ensures the balanced distribution of the body strength, thereby improving the overall strength of the main beam while reducing weight.

[0013] Preferably, the main beam body includes a straight plate and two side plates respectively disposed on both sides of the straight plate. The straight plate and the two side plates are integrally formed. The side of the side plate away from the straight plate serves as the splicing surface between the main beam body and the bottom plate. The shaft holes are distributed on the side plates.

[0014] By adopting the above technical solution, the main beam is designed to consist of a straight plate and two integrally formed side plates. The shaft holes are distributed on the side plates. By welding with the bottom plate, the main beam can be ensured to have a closed quadrilateral cross-sectional structure, which guarantees the excellent bending and torsional resistance of the main beam. The integral design simplifies the manufacturing process. At the same time, this structure can achieve a balanced distribution of the main beam's strength, improving the overall strength of the main beam while reducing weight.

[0015] Preferably, the side plate has a mounting position matching the mounting plate on the side near the shaft hole, and an arc-shaped mounting groove matching the bushing on the side away from the shaft hole.

[0016] By adopting the above technical solution, the side plate has a mounting position that matches the mounting plate, which can realize the accurate installation of the mounting plate and the main beam body, and facilitate the connection with the shock-absorbing airbag in the air suspension system; the side plate has an arc-shaped mounting groove that matches the bushing, which can realize the accurate installation of the bushing and the main beam body, and facilitate the connection with the bracket in the air suspension system.

[0017] Preferably, the side plate away from the straight plate is provided with a concave arc surface and a convex arc surface, the concave arc surface is located between the arc-shaped mounting groove and the shaft hole, and the center of the convex arc surface coincides with the center of the shaft hole.

[0018] By adopting the above technical solutions, the main beam has a unique streamlined shape, which makes the strength distribution of the main beam balanced. Under the same stress conditions, it has higher strength, lighter weight, more compact structure and more beautiful appearance than other main beam structures, while ensuring the overall balanced distribution of stress.

[0019] Preferably, a reinforcing plate is provided between the inner sides of the two side plates.

[0020] By adopting the above technical solution and setting a reinforcing plate between the inner sides of the two side plates, the overall strength of the main beam can be further improved.

[0021] Preferably, a bushing is provided between the two side plates, and the bushing is disposed on the inner wall of the shaft hole.

[0022] By adopting the above technical solution, bushings are installed on the inner wall of the shaft holes between the two side plates of the main beam, which improves the strength and wear resistance at the shaft holes and further enhances the performance of the connection between the main beam structure and the axle of the air suspension system. Simultaneously, the closed quadrilateral cross-sectional structure formed by splicing the main beam body, bottom plate, and mounting plate ensures excellent bending and torsional resistance of the main beam. The streamlined design of the splicing surface between the main beam body and the bottom plate results in a compact structure and a rational spatial layout. Combined with the symmetrical tapering structure of the main beam body, the overall strength of the main beam can be increased while reducing weight, and the balanced distribution of the body's strength is also ensured.

[0023] Preferably, the side plate has a positioning protrusion on the side away from the straight plate, and the bottom plate has a positioning groove that matches the positioning protrusion.

[0024] By adopting the above technical solution, when the main beam body is spliced ​​with the base plate, the positioning protrusion and positioning slot can accurately determine the relative position of the two, which facilitates subsequent machining, stamping and welding processes, helps to form a stable welded assembly, and thus ensures that the main beam has a closed quadrilateral cross-sectional structure, improving the bending and torsional resistance of the main beam.

[0025] Preferably, the two side plates gradually move closer together from the end closest to the shaft hole toward the arc-shaped mounting groove.

[0026] By adopting the above technical solution, the two side plates gradually move closer to each other from the end closest to the shaft hole towards the arc-shaped mounting groove. This can optimize the spatial layout of the main beam while ensuring the overall strength of the main beam, making the structure more compact, further reducing the weight of the main beam, achieving a balanced distribution of overall stress, and enhancing the manufacturability of the main beam structure.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The main beam, bottom plate, and mounting plate are spliced ​​together to form a quadrilateral structure with a closed cross section, which ensures the main beam's excellent bending and torsional resistance, and the structure is compact with a balanced distribution of overall stress.

[0029] 2. The splicing surface between the main beam and the base plate is designed to be streamlined. The streamlined design of the structure makes the main beam structure highly compact and the overall appearance beautiful and harmonious.

[0030] 3. Symmetrical tapering structures are provided at the connection between the main beam and the base plate to ensure a balanced distribution of the body strength. This reduces weight while improving the overall strength of the main beam and also makes it easier to manufacture. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the overall structure of an air suspension system according to an embodiment of this application.

[0032] Figure 2 is a schematic diagram of the main beam structure of an air suspension system according to an embodiment of this application.

[0033] Figure 3 is a structural schematic diagram of the main beam of an air suspension system according to an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Axle; 2. Bracket; 3. Airbag; 4. Shock absorber; 5. Sleeve; 6. Main beam body; 61. Side plate; 611. Axle hole; 612. Arc-shaped mounting groove; 613. Mounting position; 614. Positioning protrusion; 615. Reinforcing plate; 616. Concave arc surface; 617. Convex arc surface; 62. Straight plate; 7. Base plate; 71. Positioning slot; 8. Mounting plate; 9. Bushing; 10. Closure structure. Detailed Implementation

[0035] The present application will be further described in detail below with reference to Figures 1-3.

[0036] This application discloses a main beam structure for an air suspension system. Referring to Figures 1 and 2, it includes a main beam body 6, a base plate 7, and a mounting plate 8. The main beam body 6, base plate 7, and mounting plate 8 are spliced ​​to form a closed quadrilateral structure, which ensures excellent bending and torsional resistance of the main beam. A symmetrical tapering structure 10 is provided at the connection between the main beam body 6 and the base plate 7. Specifically, the two sides of the splice between the main beam body 6 and the base plate 7 adopt an inward-shrinking design, making the width of the connection gradually decrease, forming a symmetrical tapering style. This symmetrical tapering structure 10 not only ensures a balanced distribution of the body strength but also improves the overall strength of the main beam while reducing weight. The splice surface between the main beam body 6 and the base plate 7 is streamlined, and the base plate 7 extends along the splice surface of the main beam body 6. This streamlined design makes the structure compact, the spatial layout reasonable, and the appearance more aesthetically pleasing. One end of the main beam body 6 is provided with a shaft hole 611, which is used to connect with the axle 1 in the air suspension system. The other end of the main beam body 6 is provided with a bushing, which is used to connect with the bracket 2 in the air suspension system. In addition, both the bracket 2 and the main beam body 6 are provided with sleeves 5. The two ends of the shock absorber 4 in the air suspension system are rotatably connected to the sleeves 5 of the bracket 2 and the sleeves 5 of the main beam body 6, respectively, thereby realizing the connection and cooperation between the main beam and other components of the air suspension system. The mounting plate 8 is provided in the main beam body 6 near the shaft hole 611. The mounting plate 8 is used to connect with the shock absorber 3 in the air suspension system, thereby fixing the shock absorber 3 to the main beam structure and ensuring the normal operation of the air suspension system.

[0037] Referring to Figures 2 and 3, specifically, the main beam body 6 includes a straight plate 62 and two side plates 61 respectively disposed on both sides of the straight plate 62. The straight plate 62 and the two side plates 61 are integrally formed. The straight plate 62 is usually flat and uses a sheet metal structure. Its main function is to connect the side plates 61 on both sides and enhance the overall stability of the main beam body 6. The side of the side plate 61 away from the straight plate 62 serves as the splicing surface between the main beam body 6 and the bottom plate 7, and the shaft holes 611 are distributed at the side plate 61. The side plate 61 has a special shape. It has a mounting position 613 matching the mounting plate 8 on the side near the shaft hole 611. The mounting position 613 is formed by the two side plates 61 protruding from one end of the straight plate 62, which facilitates the installation and fixing of the mounting plate 8. The side of the side plate 61 away from the shaft hole 611 has an arc-shaped mounting groove 612 matching the bushing. This arc-shaped mounting groove 612 can accurately accommodate the bushing and ensure the stability of the bushing installation. In addition, the side plate 61, away from the straight plate 62, has a concave arc surface 616 and a convex arc surface 617. The concave arc surface 616 is located between the arc-shaped mounting groove 612 and the shaft hole 611, and the center of the convex arc surface 617 coincides with the center of the shaft hole 611. This unique design can further optimize the strength distribution of the side plate 61, allowing it to distribute stress more evenly under load and improve overall strength. Alternatively, the shape and structure of the side plate 61 can be adjusted according to actual needs; for example, the curvature of the concave arc surface 616 and the convex arc surface 617 can be changed, as long as the strength and installation requirements are met.

[0038] A reinforcing plate 615 is provided between the inner sides of the two side plates 61. The reinforcing plate 615 is generally made of metal, such as aluminum alloy, which can enhance the overall strength of the main beam 6, especially under heavy pressure, and prevent the side plates 61 from deforming. The reinforcing plate 615 can be fixed to the inner side of the side plates 61 by welding, and its installation position 613 and number can be adjusted according to the specific use scenario and stress conditions of the main beam. For example, when frequently subjected to heavy loads, the number of reinforcing plates 615 or the size of the reinforcing plates 615 can be appropriately increased.

[0039] A bushing 9 is provided between the two side plates 61, and the bushing 9 is set on the inner wall of the shaft hole 611. The bushing 9 is usually made of wear-resistant material, such as copper alloy, which can reduce wear between the shaft and the shaft hole 611 and extend its service life. The fit between the bushing 9 and the shaft hole 611 should be tight. An interference fit can be used during installation to ensure that the bushing 9 will not loosen within the shaft hole 611. Alternatively, the bushing 9 can be made of other materials with good wear resistance, such as engineering plastics.

[0040] The base plate 7 is positioned below the main beam body 6, forming a closed quadrilateral cross-section when spliced ​​with the main beam body 6. The base plate 7 can also be made of sheet metal, with a smooth and flat surface to ensure better fit with the splicing surface of the main beam body 6. The base plate 7 extends along the splicing surface of the main beam body 6 and is equipped with positioning grooves 71 that mate with positioning protrusions 614 on the side plate 61. The design of the positioning protrusions 614 and positioning grooves 71 ensures accurate alignment during splicing, improving the precision and efficiency of the assembly. During splicing, the positioning protrusions 614 are first aligned with the positioning grooves 71, and then welded in place to ensure a secure connection between the base plate 7 and the main beam body 6.

[0041] Mounting plate 8 is located at one end of the main beam body 6 near the shaft hole 611. It is usually a flat plate with mounting holes, and the material can be stainless steel. Mounting plate 8 is fixed to the mounting position 613 of side plate 61 by welding. The mounting holes are used to install shock absorber airbag 3. The shock absorber airbag 3 is tightly connected to mounting plate 8 by bolts and other connectors to ensure that the shock absorber airbag 3 can work stably.

[0042] The implementation principle of this embodiment is as follows: The main beam structure of this embodiment, through sheet metal stamping and welding, significantly reduces weight compared to the traditional guide arm structure made of spring steel, thereby lowering the overall vehicle load and improving fuel economy and power performance. Simultaneously, the closed quadrilateral cross-section ensures excellent bending and torsional resistance of the main beam, resulting in higher strength under the same stress conditions. The streamlined design of the main beam body 6 and the unique shape of the side plates 61 contribute to a compact structure, rational spatial layout, and aesthetically pleasing appearance. The inclusion of reinforcing plates 615, bushings 9, and other components further enhances the overall performance and reliability of the main beam, meeting the modern automotive demands for high strength, lightweight, and low cost in air suspension systems, thus demonstrating strong market competitiveness and promising application prospects.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A main beam structure for an air suspension system, characterized in that: The system includes a main beam body (6), a base plate (7), and a mounting plate (8). The main beam body (6), the base plate (7), and the mounting plate (8) are spliced ​​together to form a quadrilateral structure with a closed cross section. The splicing surface of the main beam body (6) and the base plate (7) is set to be streamlined, and the base plate (7) extends along the splicing surface of the main beam body (6). One end of the main beam body (6) is provided with a shaft hole (611), which is used to connect with the axle (1) in the air suspension system. The other end of the main beam body (6) is provided with a bushing, which is used to connect with the bracket (2) in the air suspension system. The mounting plate (8) is located in the main beam body (6) at one end near the shaft hole (611), and the mounting plate (8) is used to connect with the shock absorber (3) in the air suspension system.

2. The main beam structure of an air suspension system according to claim 1, characterized in that: The main beam structure is a sheet metal stamping and welding structure.

3. The main beam structure of an air suspension system according to claim 1, characterized in that: A tapering structure (10) is symmetrically provided at the connection between the main beam body (6) and the bottom plate (7).

4. The main beam structure of an air suspension system according to claim 1, characterized in that: The main beam body (6) includes a straight plate (62) and two side plates (61) respectively set on both sides of the straight plate (62). The straight plate (62) and the two side plates (61) are integrally formed. The side of the side plate (61) away from the straight plate (62) serves as the splicing surface between the main beam body (6) and the bottom plate (7). The shaft holes (611) are distributed at the side plates (61).

5. The main beam structure of an air suspension system according to claim 4, characterized in that: The side plate (61) near the shaft hole (611) is provided with a mounting position (613) that matches the mounting plate (8), and the side plate (61) away from the shaft hole (611) is provided with an arc-shaped mounting groove (612) that matches the bushing.

6. The main beam structure of an air suspension system according to claim 5, characterized in that: The side plate (61) away from the straight plate (62) is provided with an inner concave arc surface (616) and an outer convex arc surface (617). The inner concave arc surface (616) is located between the arc-shaped mounting groove (612) and the shaft hole (611). The center of the outer convex arc surface (617) coincides with the center of the shaft hole (611).

7. The main beam structure of an air suspension system according to claim 4, characterized in that: A reinforcing plate (615) is provided between the inner sides of the two side plates (61).

8. The main beam structure of an air suspension system according to claim 4, characterized in that: A bushing (9) is provided between the two side plates (61), and the bushing (9) is provided on the inner wall of the shaft hole (611).

9. The main beam structure of an air suspension system according to claim 4, characterized in that: The side plate (61) is provided with a positioning protrusion (614) on the side away from the straight plate (62), and the bottom plate (7) is provided with a positioning slot (71) that matches the positioning protrusion (614).

10. The main beam structure of an air suspension system according to claim 5, characterized in that: The two side plates (61) gradually move closer together from the end near the shaft hole (611) toward the arc-shaped mounting groove (612).

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