Method for improving vibration attenuation reliability of metal rubber joints and metal rubber joint assembly

Abstract

The invention provides a method for improving vibration attenuation reliability of metal rubber joints. The two metal rubber joints, an inner cylinder and an outer cylinder are included. The method is characterized in that the outer cylinder is arranged on the periphery of the inner cylinder to form an annular cylinder; the two metal rubber joints are both installed in the portion, between the inner cylinder and the outer cylinder, of the annular cylinder in a press-fit manner; a joint bearing is arranged between the two metal rubber joints; the inner cylinder is sleeved with an inner ring of the joint bearing; an outer ring of the joint bearing makes contact with the inner surface of the outer cylinder; deformation of the metal rubber joints makes the inner ring and the outer ring of the joint bearing slide relative to each other; the axial and radial rigidity of the metal rubber joints is increased through the joint bearing; overload protection is formed for the metal rubber joints; partial torsional rigidity of the metal rubber joints is reduced through the relative sliding of the inner ring and the outer ring of the joint bearing; and the purpose of improving the vibration attenuation reliability of the metal rubber joints is achieved. The invention further provides a metal rubber joint assembly.

Description

technical field [0001] The invention provides a method for improving the reliability of vibration reduction of metal rubber joints, which belongs to the technical field of vibration reduction of rail vehicles. The invention also provides a metal rubber joint component. Background technique [0002] As a flexible connecting body for vehicles, metal rubber joints play a role in reducing vibration and noise during vehicle operation and improving ride comfort. Existing metal-rubber joints are vulcanized bodies formed by vulcanizing metal and rubber. According to the running characteristics of the vehicle, when the vehicle passes through a curve, the greater the deflection angle provided by the metal rubber joint is, the more favorable it is for the vehicle to be smooth and comfortable; when the vehicle starts and brakes, the greater the radial stiffness provided by the metal rubber joint is, the more Facilitate the starting and braking operation of the vehicle. Such working...

AI Technical Summary

Problems solved by technology

During the operation of the vehicle, due to the large amount of rubber and structural limitations, the product has a large yaw torsion stiffness during the vehicle's running curve, which limits the yaw torsion angle, and the vibration damping effect is not good. When the vehicle starts or brakes, the product only It can provide a certain axial and radial stiffness. If the load is too large, it is easy to exceed the allowable stress of the rubber and cause permanent deformation of the rubber.

With the increasing number of traffic rail lines, the probability of encountering harsh conditions of turning and braking at the same time is increasing during the operation of the vehicle. When the vehicle encounters harsh conditions, the radial and axial load of the metal rubber joint The accumulation increases, and the required deflection angle is relatively large. When the rubber is compressed and / or stretched, it is twisted vigorously, which will easily lead to permanent deformation and cracking of the rubber. The metal rubber joint loses the function of vibration reduction and noise reduction when it is separated from the jacket. Therefore, when encountering harsh working conditions, the service life of the metal rubber joint will be shortened or even terminated, and the vibration damping effect cannot meet the requirements. The vibration reduction reliability of the metal rubber joint still needs to be improved

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