A leaf spring lower shock absorber bracket for a heavy duty truck

Abstract

The utility model relates to a heavy truck's leaf spring lower shock absorber support, solved the existing leaf spring lower shock absorber support in the real car use, the square groove and the arc connecting head junction found the cracking problem, and the square groove and the arc connecting head exist the hidden danger problem. Including square groove and arc connecting head, two kinds of structure boundary smooth transition, the whole structure is the casting, and the square groove includes left groove, right groove and shock absorber support positioning hole, and left and right square grooves are symmetrically arranged on the both sides of shock absorber support positioning hole, arc connecting head includes bolt hole, arc connecting head's short arc muscle, arc connecting head's long arc muscle and bottom plate, and the bolt hole is connected shock absorber through bolt. The utility model can reduce the development cost of product, reduce structural stress concentration, improve the whole strength of structure, reduce the risk of structural damage, and further ensure the whole vehicle performance.

Description

Technical Field

[0001] This utility model relates to a leaf spring lower shock absorber bracket for heavy-duty trucks, belonging to the field of automotive suspension systems. Background Technology

[0002] The leaf spring lower shock absorber bracket is a key load-bearing and connecting component in the automotive suspension system. Its main function is to fix the lower end of the shock absorber to the axle or frame, and at the same time, work with the leaf spring to buffer and suppress vehicle vibrations, directly affecting the ride smoothness, handling stability and service life of the components.

[0003] Early leaf spring shock absorbers mostly adopted a stamping and welding structure, which was formed by stamping steel plates and then welding them together. Although the lightweight advantage was obvious, the welding process was prone to deformation and residual stress, which affected the structural strength and service life. Moreover, the materials were mainly ordinary carbon steel, such as Q235 steel. Although the cost was low, the fatigue performance under complex stress environments was limited, and cracks or fractures were likely to occur after long-term use.

[0004] In actual vehicle use, the existing leaf spring lower shock absorber bracket has been found to have cracking problems at the connection between the square groove and the arc-shaped connector. Furthermore, the square groove and the arc-shaped connector pose safety hazards, seriously affecting the overall vehicle performance. Therefore, there is an urgent need for a new leaf spring lower shock absorber bracket to replace the existing one. Utility Model Content

[0005] The purpose of this invention is to solve the problem of cracking at the connection between the square groove and the arc-shaped connector of the leaf spring shock absorber bracket during use, while optimizing the hidden dangers of the square groove structure and the arc-shaped connector structure, thereby strengthening the structure and meeting the design requirements.

[0006] This utility model is achieved through the following technical solution:

[0007] A leaf spring lower shock absorber bracket for a heavy-duty truck includes a square groove 1 and an arc-shaped connector 4. The two structures have a smooth transition at their boundaries, and the entire structure is a casting. The square groove 1 includes a left groove, a right groove, and a shock absorber bracket positioning hole 2. The left and right square grooves are symmetrically arranged on both sides of the shock absorber bracket positioning hole 2. The arc-shaped connector 4 includes bolt holes 5, short arc ribs 6 of the arc-shaped connector, long arc ribs 7 of the arc-shaped connector, and a base plate. The bolt holes 5 are used to connect the shock absorber via bolts.

[0008] The material of the lower shock absorber bracket is QT450-10.

[0009] The short side of the square groove and the short arc ribs of the arc connector are thickened inward.

[0010] The overall height of the square groove is reduced.

[0011] This invention can reduce product development costs, reduce structural stress concentration, improve overall structural strength, reduce the risk of structural damage, and thus ensure the performance of the entire vehicle. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] This utility model relates to a leaf spring lower shock absorber bracket for heavy-duty trucks. To optimize and improve the structure, QT450-10 material is selected for the leaf spring lower shock absorber bracket. This material combines high strength and good toughness, meeting the usage requirements of the leaf spring lower shock absorber bracket. Compared to the old state of the leaf spring lower shock absorber bracket, this utility model reduces the overall height of the square groove by 15mm, while increasing the thickness of the short side plate of the square groove inward by 5mm. The short arc rib and the long arc rib of the arc connector at the connection between the square groove and the arc connector are smoothly transitioned, reducing the risk of stress concentration leading to cracking. The thickness of the short arc rib of the arc connector is increased inward by 10mm, and the middle arc rib of the arc connector is eliminated, improving the overall structural strength and meeting the design requirements.

[0014] like Figure 1 As shown, a lower shock absorber bracket structure for a heavy-duty truck mainly includes a square groove 1 and an arc-shaped connector 4. The boundaries between the two structures are smoothly transitioned, and the entire structure is a casting. The square groove 1 mainly consists of a left groove, a right groove, and shock absorber bracket positioning holes 2, with the left and right square grooves symmetrically arranged on both sides of the shock absorber bracket positioning holes 2. The arc-shaped connector 4 mainly consists of bolt holes 5, short arc ribs 6, long arc ribs 7, and a base plate. The bolt holes 5 are mainly used to connect the shock absorber via bolts, while the short and long arc ribs are mainly used to connect the square groove and the arc-shaped connector.

[0015] This utility model has the following features:

[0016] 1. Reduce the overall height of the square channel and optimize by removing the central arc rib of the arc connector to reduce product development costs;

[0017] 2. Thicken the short side edges of the square channel and the short arc ribs of the arc connector inward to improve structural strength;

[0018] 3. Ensure a smooth transition between the square groove and the arc-shaped connector to reduce stress concentration and lower the risk of structural damage.

Claims

1. A leaf spring lower shock absorber bracket for a heavy duty truck characterized by: It includes square grooves and arc-shaped connectors, with smooth transitions between the two structures. The entire structure is a casting. The square grooves include left grooves, right grooves, and shock absorber bracket positioning holes, with the left and right square grooves symmetrically arranged on both sides of the shock absorber bracket positioning holes. The arc-shaped connectors include bolt holes, short arc ribs of the arc-shaped connectors, long arc ribs of the arc-shaped connectors, and a base plate. The bolt holes are used to connect the shock absorbers via bolts.

2. A leaf spring lower shock absorber bracket for a heavy duty truck as defined in claim 1 wherein: The material of the lower shock absorber bracket is QT450-10.

3. A leaf spring lower shock absorber bracket for a heavy duty truck as defined in claim 1 wherein: The short side of the square groove and the short arc ribs of the arc connector are thickened inward.

4. A leaf spring lower shock absorber bracket for a heavy duty truck as defined in claim 1 wherein: The overall height of the square groove is reduced.

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