Roll ball quasi-zero stiffness vibration isolator

Abstract

The invention relates to the field of vibration isolators, in particular to a roll ball quasi-zero stiffness vibration isolator, and solves the problem of harder micro-magnitude vibration isolating on equipment subjected to vibration isolation in the millimeter scale range. The vibration isolator comprises a base, an upper cover and a connection piece; the core structure comprises a horizontal elastic piece with negative rigidity, a vertical elastic piece with positive rigidity and a roll ball contact pair always kept in touch in a way of aligning along the horizontal central plane; the roll ball contact pair comprises an outer roll ball and an inner roll ball structure; the horizontal elastic piece is arranged in a horizontal adjusting mechanism connected with the outer roll ball; the inner roll ball structure is connected with a horizontal vibration platform supported by the vertical elastic piece; the vertical elastic piece is connected with a vertical adjusting mechanism connected with the base; and diameters of the outer ball and the inner ball structure are smaller than 1cm. The micro-magnitude vibration isolation effect on the equipment subjected to vibration isolation is good, and the vibration isolator is compact in structure and light in weight.

Description

technical field [0001] The invention relates to the field of low-frequency or ultra-low-frequency vibration isolators, in particular to a rolling ball type quasi-zero stiffness vibration isolator. Background technique [0002] Vibration isolation refers to the use of additional systems to isolate the vibration source and the controlled object to achieve the purpose of suppressing the vibration of the controlled object. In modern society, people's requirements for the vibration environment, product and structure vibration characteristics have been further improved, such as the vibration isolation protection of high-precision optical instruments by the optical vibration isolation platform during measurement, and the vibration and noise reduction of underwater sailing submarines, etc. The requirements for vibration technology are becoming more and more stringent. However, traditional linear vibration isolators have gradually exposed some limitations. For example, the linear v...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that it is difficult to isolate the micro-vibration of the vibration-isolated equipment, especially in the range of millimeters, the invention provides a rolling ball type quasi-zero-stiffness vibration isolator

Images