Annular metal rubber vibration isolator and vibration isolation system thereof

Abstract

The invention provides an annular metal rubber vibration isolator for precise load and a vibration isolation system thereof. The vibration isolation system comprises a plurality of annular metal rubber vibration isolators, a base and a load platform, the annular metal rubber vibration isolator is characterized in that the plurality of annular metal rubber vibration isolators are uniformly distributed along the circumference or are arranged between the base and the load platform in a square matrix mode, the central symmetry axis of each annular metal rubber vibration isolator is parallel to a plane of the base and the plane of the load platform, and the central symmetry axis is determined according to the rigidity requirement of the vibration isolation system; the central symmetry axis of each annular metal rubber vibration isolator is oriented in the plane and is determined by the design space and load requirements of the vibration isolation system. According to the annular metal rubber vibration isolator and the vibration isolation system thereof, the characteristic that the radial rigidity of an annular metal rubber damping is less than the axial rigidity is utilized, the vibration isolation effect and the lateral bearing capacity of the system in the vertical direction are improved, the structure is simple, the size is small, the weight is light, and the reliability is high.

Description

technical field [0001] The invention relates to an annular metal rubber vibration isolator and a vibration isolation system, belonging to the technical field of structural vibration control. Background technique [0002] Precision loads represented by photoelectric pods, visible light CCD cameras, and inertial navigation systems not only undertake important tasks such as information acquisition and navigation in aerospace missions, but are also affected by the vibration generated by spacecraft / aircraft. These vibrations are transmitted to precision loads through the spacecraft / aircraft structure, affecting its normal operation, reducing its service life, and further affecting the normal operation of the overall system of the spacecraft / aircraft. Therefore, it is necessary to provide a vibration isolation system with light weight, small volume and high reliability, which is arranged between the precision load and the spacecraft / aircraft structure to ensure the long-term stabl...

AI Technical Summary

Problems solved by technology

[0004] However, the application effect of metal rubber in vibration isolators is not good at present. The reason is that the design goal of the vibration isolator is to make the natural frequency of the vibration isolation system as low as possible and the vibration isolation efficiency as high as possible.

However, the requirements for the static stiffness that determine its bearing capacity and stability and the dynamic stiffness that determine its vibration isolation performance are a pair of contradictions.

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