A new low-entry vehicle chassis air suspension assembly

Abstract

A novel low-entry vehicle chassis air suspension assembly includes two parallel guide arm assemblies and a shock absorber assembly. One end of each guide arm assembly extends upwards at an angle and is fixed with a U-shaped guide arm bracket. Perforated mounting plates perpendicular to the guide arm bracket body are provided at both the front and rear ends of each guide arm bracket. The lower end of each shock absorber assembly is rotatably connected to its corresponding lower shock absorber bracket, and the upper end of each shock absorber assembly is correspondingly provided with a shock absorber bracket. The other ends of the two guide arm assemblies are rotatably connected to both ends of a thrust rod assembly. Vertical air springs are fixedly supported at both ends of the lower crossbeam. This invention forms an L-shaped guide arm structure, providing a direct longitudinal force transmission path, adapting to high-load scenarios, and meeting the air spring installation height requirements. This facilitates dynamic adjustment of the remaining load by the air spring, ensuring consistent suspension height under different loads.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension technology, specifically a novel low-entry vehicle chassis air suspension assembly. Background Technology

[0002] Low-entry vehicles typically refer to vehicles with a low cab and chassis ground clearance, facilitating entry and exit for staff, improving visibility, and simplifying cargo handling. In recent years, with the further development of my country's transportation and logistics industries, in order to facilitate cargo loading and unloading and reduce chassis height, the market has mainly focused on adjusting the chassis leaf spring structure or arc height. This has resulted in problems such as poor comfort, increased weight, and frequent maintenance. Furthermore, the thrust rod is located above the axle, leading to low space utilization. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a novel low-entry vehicle chassis air suspension assembly.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a novel low-entry vehicle chassis air suspension assembly, comprising two guide arm assemblies that are parallel to each other and a shock absorber assembly. One end of each of the two guide arm assemblies extends upward at an angle and is respectively fixed with a U-shaped guide arm bracket. The front and rear ends of each guide arm bracket are respectively provided with perforated mounting plates perpendicular to the guide arm bracket body. A shock absorber lower bracket is fixed on the opposite side of each guide arm assembly. The lower end of each shock absorber assembly is rotatably connected to the corresponding shock absorber lower bracket. The upper end of each shock absorber assembly is respectively provided with a shock absorber bracket. The other ends of the two guide arm assemblies are respectively rotatably connected to the two ends of a thrust rod assembly. The two guide arm assemblies near the thrust rod assembly are fixedly connected by a lower crossbeam. Vertical air springs are fixedly supported at both ends of the lower crossbeam.

[0005] Furthermore, the left side of the thrust rod assembly is rotatably connected to the left guide arm assembly via the left thrust rod bracket. The main body of the left thrust rod bracket is an angle iron, and multiple triangular reinforcing plates are provided on the inner side of the angle iron. The right side of the thrust rod assembly is rotatably connected to the right guide arm assembly via the right thrust rod bracket. The main body of the right thrust rod bracket is composed of two vertical U-shaped plates fastened together, and the two U-shaped plates are fixedly connected by multiple fixing sleeves between them.

[0006] Furthermore, the bottom of each air spring is fixedly connected to the lower crossbeam via an air spring lower bracket.

[0007] Furthermore, each air spring is provided with an air spring upper bracket at its top. The air spring upper bracket is a plate-like structure with a horizontal cross-section of U, and the vertical main body has multiple mounting holes.

[0008] Furthermore, an inverted U-shaped reinforcing plate is also provided on the side of the thrust rod assembly mounted on the right support of the thrust rod.

[0009] Furthermore, the right thrust rod bracket is higher than the left thrust rod bracket, and the right thrust rod bracket is used for fixed connection with the vehicle frame.

[0010] Furthermore, a reinforcing plate is fixed to the lower surface of the middle part of each side guide arm assembly.

[0011] With the above settings, this utility model has the following advantages:

[0012] The guide arm assembly is located under the axle. One end of each of the two guide arm assemblies extends upward at an angle and is fixed with a U-shaped guide arm bracket to form an L-shaped guide arm structure. The longitudinal force transmission path is direct, which is suitable for high load scenarios and meets the installation height requirements of the air spring. This facilitates the dynamic adjustment of the remaining load by the air spring and ensures that the suspension height is consistent under different loads.

[0013] The right side of the thrust rod assembly is rotatably connected to the right guide arm assembly via the right thrust rod bracket. The thrust rod assembly is located at the rear and is connected to the vehicle frame at the end of the guide arm assembly via the right thrust rod bracket, which improves the space utilization rate of the vehicle in the Z direction.

[0014] The lower crossbeam replaces the leaf spring structure of the stabilizer bar assembly, reducing the additional weight of the stabilizer bar and its components, and allowing for a lighter layout;

[0015] The shock absorber assembly is located inside the frame near the axle, reducing the extension and compression strokes, making the suspension space more compact and adaptable. Attached Figure Description

[0016] The present invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0018] like Figure 1As shown, a novel low-entry vehicle chassis air suspension assembly includes two parallel guide arm assemblies 2 and a shock absorber assembly 4. One end of each guide arm assembly 2 extends upward at an angle and is fixed with a U-shaped guide arm bracket 1. The front and rear ends of each guide arm bracket 1 are respectively provided with perforated mounting plates perpendicular to the body of the guide arm bracket 1. A shock absorber lower bracket 5 is fixed on the opposite side of each guide arm assembly 2. The lower end of each shock absorber assembly 4 is rotatably connected to the corresponding shock absorber lower bracket 5. The upper end of each shock absorber assembly 4 is respectively provided with a shock absorber bracket 3. The other ends of the two guide arm assemblies 2 are rotatably connected to the two ends of a thrust rod assembly 9. The two guide arm assemblies 2 near the thrust rod assembly 9 are fixedly connected by a lower crossbeam 11. Vertical air springs 7 are fixedly supported at both ends of the lower crossbeam 11.

[0019] Specifically: The left side of the thrust rod assembly 9 is rotatably connected to the left guide arm assembly 2 via the left thrust rod bracket 12. The main body of the left thrust rod bracket 12 is an angle iron, and multiple triangular reinforcing plates are provided on the inner side of the angle iron. The right side of the thrust rod assembly 9 is rotatably connected to the right guide arm assembly 2 via the right thrust rod bracket 8. The main body of the right thrust rod bracket 8 is composed of two vertical U-shaped plates fastened together, and the two U-shaped plates are fixedly connected by multiple fixing sleeves between them.

[0020] The bottom of each air spring 7 is fixedly connected to the lower crossbeam 11 via the lower air spring bracket 10. The top of each air spring 7 is provided with an upper air spring bracket 6. The upper air spring bracket 6 is a plate structure with a horizontal U-shaped cross section, and the vertical main body has multiple mounting holes. The right thrust rod bracket 8 is provided with an inverted U-shaped reinforcing plate on one side of the thrust rod assembly 9. The right thrust rod bracket 8 is higher than the left thrust rod bracket 12, and the right thrust rod bracket 8 is used to fix it to the vehicle frame. The lower surface of the middle part of each guide arm assembly 2 is fixed with a reinforcing plate.

[0021] Working principle of this utility model:

[0022] The guide arm assembly 2 is arranged under the axle. One end of the two guide arm assemblies 2 extends upward at an angle and is fixed with a U-shaped guide arm bracket 1 to form an L-shaped guide arm structure. The longitudinal force transmission path is direct, which is suitable for high load scenarios and meets the installation height requirements of the air spring 7. This facilitates the dynamic adjustment of the remaining load by the air spring 7 and ensures that the suspension height is consistent under different loads.

[0023] The right side of the thrust rod assembly 9 is rotatably connected to the right guide arm assembly 2 via the right thrust rod bracket 8. The thrust rod assembly 9 is located at the rear and is connected to the vehicle frame at the end of the guide arm assembly 2 via the right thrust rod bracket 8, which improves the space utilization rate of the vehicle in the Z direction.

[0024] The lower crossbeam 11 replaces the leaf spring structure of the stabilizer bar assembly, reducing the extra weight of the stabilizer bar and its assembly, and allowing for a lighter layout; the shock absorber assembly 4 is located on the inner side of the frame close to the axle, reducing the extension and compression strokes, making the suspension space more compact and more adaptable.

[0025] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A novel low-entry vehicle chassis air suspension assembly, comprising two parallel guide arm assemblies (2) and a shock absorber assembly (4), characterized in that: Two guide arm assemblies (2) extend upward at the same end and are respectively fixed with U-shaped guide arm brackets (1). The front and rear ends of each guide arm bracket (1) are respectively provided with perforated mounting plates perpendicular to the body of the guide arm bracket (1). The opposite side of each guide arm assembly (2) is respectively fixed with a damper lower bracket (5). The lower end of each damper assembly (4) is rotatably connected to the corresponding damper lower bracket (5). The upper end of each damper assembly (4) is respectively provided with a damper bracket (3). The other ends of the two guide arm assemblies (2) are respectively rotatably connected to the two ends of the thrust rod assembly (9). The two guide arm assemblies (2) close to the thrust rod assembly (9) are fixedly connected by a lower crossbeam (11). The two ends of the lower crossbeam (11) are respectively fixedly supported by vertical air springs (7).

2. The novel low-entry vehicle chassis air suspension assembly as described in claim 1, characterized in that: The left side of the thrust rod assembly (9) is rotatably connected to the left guide arm assembly (2) via the left thrust rod bracket (12). The main body of the left thrust rod bracket (12) is an angle iron, and multiple triangular reinforcing plates are provided on the inner side of the angle iron. The right side of the thrust rod assembly (9) is rotatably connected to the right guide arm assembly (2) via the right thrust rod bracket (8). The main body of the right thrust rod bracket (8) is composed of two vertical U-shaped plates fastened together, and the two U-shaped plates are fixedly connected by multiple fixing sleeves between them.

3. The novel low-entry vehicle chassis air suspension assembly as described in claim 1, characterized in that: The bottom of each air spring (7) is fixedly connected to the lower crossbeam (11) via the lower air spring bracket (10).

4. A novel low-entry vehicle chassis air suspension assembly as described in claim 1, characterized in that: Each air spring (7) is provided with an air spring upper bracket (6) at its top. The air spring upper bracket (6) is a plate structure with a horizontal cross section U-shaped and multiple mounting holes in its vertical body.

5. A novel low-entry vehicle chassis air suspension assembly as described in claim 1, characterized in that: The right support of the thrust rod (8) is provided with an inverted U-shaped reinforcing plate on one side of the thrust rod assembly (9).

6. A novel low-entry vehicle chassis air suspension assembly as described in claim 1, characterized in that: The right thrust rod bracket (8) is higher than the left thrust rod bracket (12), and the right thrust rod bracket (8) is used for fixed connection with the frame.

7. A novel low-entry vehicle chassis air suspension assembly as described in claim 1, characterized in that: Each guide arm assembly (2) has a reinforcing plate fixed to the lower surface of the middle part.

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