Combined pendulum type pneumatic vibration isolator

Abstract

The present invention relates to vibration isolator, and is especially is one combined pendulum type pneumatic vibration isolator. The gimbal rod seat is suspended on ball inside the suspended cup, the suspended cup is suspended inside the turned pendulum, and the pendulum is separated by one spacer plate into elastic gas bag cavity and damping gas bag cavity to form one traditional single pendulum structure. The single pendulum structure is located on one ball inside the base seat and four horizontal regulating spring in the same horizontal plane is used to connect the turned pendulum with the base seat and to form one turned pendulum structure. Via regulating the rigidity of the springs and their distance to the support seat, the inherent frequency of the system may approach zero. The present invention may be used widely in scientific research and production to eliminate external low frequency vibration.

Description

Technical field [0001] The present invention relates to a vibration isolation device, and more particularly to a combined pendulum type pneumatic vibration isolator. Background technique [0002] In a wide range of scientific research work and production processes, especially in the fields of measurement, testing, testing and manufacturing, it is necessary to exclude vibrations from the outside world, such as vibrations from the ground, especially low-frequency ground vibrations, vibration isolation is required The platform or other vibration isolation devices, and the vibration isolator is the core component of the vibration isolation device to achieve the vibration isolation effect. The existing technologies in the field of vibration isolation technology, the more advanced air spring damping system, and the vibration isolation effect is achieved in the form of a single pendulum structure, that is, the main structure of the pneumatic vibration isolator is: the vibration iso...

AI Technical Summary

Problems solved by technology

However, in the general structure of the prior art, the pendulum length is not adjustable, and due to structural reasons, the pendulum length also has a certain limit, and the length of the single pendulum cannot be extended without limit. Therefore, the level of the formed vibration isolation system is inherently The frequency is limited to a certain extent and cannot be lowered very low. For example, in the introduction of product samples of foreign manufacturers, the natural frequency of the vibration isolation system is in the range of 1.2-1.7Hz in the vertical direction and 1.5-1.9Hz in the horizontal direction. If you want to further improve its performance will be restricted

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