Composite bushing structure and assembly method

Abstract

The invention provides a composite bushing structure and an assembly method. The composite bushing structure comprises a pin rod (1), a locating sleeve (2), a lining pipe (4) and a limiting seat (5),wherein the locating sleeve (2) is fixedly arranged in a hollow inner cavity of the lining pipe (4), the limiting seat (5) is fixedly arranged in the hollow inner cavity of the locating sleeve (2), the pin rod (1) penetrates through the limiting seat (5) and the locating sleeve (2), the pin rod (1) and the locating sleeve (2) are movably connected in a relatively rotating mode, and a friction pairis formed between the pin rod (1) located in the middle of the limiting seat (5) and the inner cavity wall of the limiting seat (5). When the bushing is subjected to torsion and deflection deformation, the bushing can freely rotate and swing within the range defined by the limiting seat through the pin rod, the torsion and the swinging of the bushing can be converted into the rotation of the pinrod, so that the torque borne by the composite bushing structure can be reduced; and the radial and axial damping requirements are better met, so that the motion response rate of the bushing can be improved and the service life of the bushing can be prolonged correspondingly.

Description

technical field [0001] The invention relates to the field of bushing structure design, in particular to a composite bushing structure and an assembly method applied to automobile chassis. Background technique [0002] In automobile chassis, locomotives and other mechanical structures, it is usually necessary to install bushings for shock absorption. For example, a plurality of shock-absorbing rubber bushes are installed on the existing automobile chassis, which can provide a certain degree of flexibility for the running mechanism of the vehicle to achieve ride comfort. [0003] Ordinary bushings with conventional structures have four motion states in the working process, which are radial, axial, torsion and yaw. Due to the elastic effect of rubber, it will generate a large force when it is deformed in the radial and axial directions, and it will generate a large moment when it is deformed in torsion and deflection, and the magnitude of this force and moment is the same as t...

AI Technical Summary

Problems solved by technology

Therefore, in addition to the tension and compression loads, the bushing has additional torsional and yaw loads, which greatly reduces the service life of the bushing and accelerates the failure of the bushing components. Moreover, the torsional and yaw moment increases with the The increased deformation of the bushing components will also continue to increase, leading to an increased fatigue risk of the overall structure of the bushing

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