A magnetic ring type high-static-low-dynamic stiffness vibration isolator capable of adapting to various working conditions and a use method thereof

The magnetic ring-type high static and low dynamic stiffness vibration isolator, which utilizes the interaction between magnets and the cooperation of disc springs, solves the problems of poor low-frequency vibration control and insufficient adaptability of traditional vibration isolation systems, and achieves stable vibration isolation effect of high static and low dynamic stiffness vibration isolator under various working conditions.

CN117927607BActive Publication Date: 2026-07-21NINGBO INST OF DALIAN UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO INST OF DALIAN UNIV OF TECH
Filing Date
2024-03-12
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional linear vibration isolation systems are ineffective in controlling low-frequency vibrations, and high static and low dynamic stiffness vibration isolators cannot adapt to various working conditions, leading to decreased vibration isolation performance and the risk of instability.

Method used

A magnetic ring-type high static stiffness and low dynamic stiffness vibration isolator is designed by using the interaction between magnets and the cooperation of disc springs. By connecting a permanent magnet positive stiffness component and a disc spring negative stiffness component in parallel, the relative position between the magnets can be adjusted to adapt to different working conditions, providing vibration isolation effect with high static stiffness and low dynamic stiffness.

Benefits of technology

It achieves excellent low-frequency vibration isolation performance and stable load-bearing capacity under various working conditions, avoiding system instability, and is suitable for vibration control of precision instruments and electromechanical equipment.

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Abstract

A magnetic ring type high static low dynamic stiffness vibration isolator capable of adapting to various working conditions and a use method thereof belong to the field of vibration isolation and noise reduction equipment and are composed of a support assembly, a permanent magnet positive stiffness assembly, a disc spring negative stiffness assembly and a bearing mechanism. The support assembly is a hollow cylindrical structure and can shield the influence of a magnetic field on the external environment. The permanent magnet positive and negative stiffness assemblies respectively provide positive and negative stiffness for the vibration isolator, wherein the relative movement between the inner and outer magnetic groups in the positive stiffness assembly generates a magnetic force to provide a vertical bearing capacity. The bearing mechanism supports the vibration-isolated object on the object table. The vibration isolator can be applied to various vibration working conditions, has the effects of reducing the vibration amplitude from the base to the vibration-isolated object and providing a supporting action, and the vibration-isolated object needs to be placed horizontally or fixed on the object table during use. The vibration isolator can adapt to changes in the load working condition by adjusting the relative position between the magnets, has good low-frequency and ultra-low-frequency vibration isolation effect, a wide vibration isolation frequency band and stable working performance.
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