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 involves low -frequency or ultra -low -frequency vibrator fields, which involves a quasi -rigid zero rigid vibrator. Background technique [0002] The vibration isolation refers to the purpose of using an additional system to isolated from the vibration source and controlling objects to achieve the purpose of vibration suppression of the controlled object.In modern society, people's requirements for the characteristics of vibration environment, products and structural vibrations have been further improved, such as measurement of vibration -proof protection of high precision optical instruments, vibration reduction and noise reduction of submarines of underwater navigation submarines, etc.The requirements for vibrating technology are becoming more and more stringent.However, traditional linear vibers gradually expose some limitations. For example, the linear vibration system is only greater than the frequency of external disturbances than the i...

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

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