Plate spring eye bushing and installation method thereof

Abstract

The invention discloses a plate spring eye bushing. The plate spring eye bushing comprises a metal inner sleeve and two plate spring fixed sleeves, wherein the two plate spring fixed sleeves are installed on the metal inner sleeve in an interference mode, the plate spring fixed sleeves comprise installation tubes and positioning circular truncated cones which are arranged on the ends of the installation tubes, a plurality of strip-shaped bulges are arranged on the installation tubes along the length direction of the installation tubes in a bulged mode, the two positioning circular truncated cones are respectively flush with one end surface of the metal inner sleeve, and the inner ends of the two installation tubes are spaced at a preset distance. Additionally, the invention further provides an installation method of the plate spring eye bushing. According to the device, the collineation of the center of a plate spring eye and the center of the bushing is guaranteed; the problem that an existing bushing structure cannot meet the requirements of large load and large torsion deformation is solved, and the application range of the bushing is extended. Additionally, the plate spring eye bushing has the advantages of convenience in disassembly and assembly and low maintenance cost.

Description

technical field [0001] The invention relates to the field of vehicle suspension, in particular to a leaf spring lug bush and an installation method thereof. Background technique [0002] In the guiding device of the suspension system (such as swing arm, rear axle, leaf spring, etc.), the hinge point connected with the body is more and more connected by rubber bushing. Rubber bushing has become an indispensable and important component in automobiles due to its good vibration isolation performance, elastic characteristics and attenuation characteristics. [0003] In more and more light trucks, commercial buses and other models, on the premise of meeting sufficient load requirements, the vehicle design is increasingly pursuing comfort performance, so in the leaf spring non-independent suspension structure used (most of the Models still use this type of suspension), and rubber bushing connection methods are also very common. Therefore, as a connecting soft joint, how the leaf ...

AI Technical Summary

Problems solved by technology

In the vehicle model with small leaf spring movement stroke (that is, small rotation angle), the current one-piece vulcanized bushing structure can basically meet the practical requirements

However, when the load is heavy and the movement stroke of the leaf spring is large, the rubber bushing needs to be twisted at a large angle and the torsional deformation is frequent. Long-term torsional deformation directly leads to the tearing of the rubber and the inner and outer sleeves, which in turn causes the entire rubber bushing to be damaged. failure, the function of the entire leaf spring is also lost

[0008] (3) In the prior art, the assembly of the lug bush and the leaf spring lug depends on the interference fit between the metal outer sleeve and the lug as a whole, so the maintenance convenience of this structure is poor and the maintenance cost is high

When the lug bushing is damaged, special tools are needed to press it out, which may damage the lug end of the leaf spring at the same time, resulting in the need to replace the leaf spring assembly, resulting in high maintenance costs

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