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Quasi-zero stiffness-based vibration isolator

A quasi-zero stiffness, vibration isolator technology, applied in the direction of spring/shock absorber, non-rotational vibration suppression, magnetic spring, etc., to achieve high reliability, simple and accurate implementation method, and the effect of saving axial space

Active Publication Date: 2018-12-11
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The present invention aims at the problems existing in quasi-zero stiffness vibration isolators, and proposes a vibration isolator based on quasi-zero stiffness

Method used

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  • Quasi-zero stiffness-based vibration isolator
  • Quasi-zero stiffness-based vibration isolator
  • Quasi-zero stiffness-based vibration isolator

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings. Such as image 3 As shown, the specific structure of the present invention: double-headed piston 1, slotted disc spring 2, pressure plate 3, giant magnetostrictive tube 4, annular permanent magnet 5, magnetorheological elastomer 6, guide disk 7, bearing End 8, upper end cover 9, adjusting bolt 10, fastening bolt 11, fastening nut 12, adjusting nut 13, regulating port 14 and base 15; a housing is arranged on the base 15, and the top of the housing is fastened by the fastening bolt 11, Nut 12 fixes the upper end cover 9, and the double-headed piston 1 is arranged in the through hole of the upper end cover 9, and the load-bearing end 8 is the upper end of the double-headed piston 1, and the two piston end faces of the double-headed piston 1 are connected with the upper end face of the grooved disc spring 2 respectively. Abutting against the upper end surface of the magneto...

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Abstract

The invention discloses a quasi-zero stiffness-based vibration isolator, and belongs to the field of ultra-precise vibration attenuation. The vibration isolator is characterized in that an magnetorheological elastomer relatively low in stiffness is connected in parallel on the basis of taking a slotting belleville spring having a negative stiffness displacement region as a main elastic component;stiffness of the magnetorheological elastomer is regulated by a stiffness regulating device, so that a whole vibration isolation system connected in parallel by the slotting belleville spring and themagnetorheological elastomer under a load meets the need of quasi-zero stiffness under a certain working displacement region, and a possibility is provided for realizing low inherent frequency, high load-carrying capacity and small deformation required by the precise vibration isolation system.

Description

technical field [0001] The invention relates to a precision vibration reduction technology, specifically a vibration isolator based on quasi-zero stiffness. Background technique [0002] The processing and measurement of precision instruments and equipment are not only related to the accuracy of the equipment itself, but also affected by the surrounding vibration environment. As an effective load transmission path isolation method, vibration isolation technology is widely used in engineering practice. Among them, passive vibration isolation technology has been receiving continuous attention due to its advantages of high stability, low power consumption, and simple structure. However, according to the vibration control theory, when the ratio of the excitation frequency of the system to the natural frequency of the vibration isolator is greater than , it has vibration isolation performance. Traditional positive stiffness vibration isolation systems often only have a vibrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F6/00F16F1/32F16F15/03F16F15/04
CPCF16F1/32F16F6/00F16F15/03F16F15/04
Inventor 史啸天李鹤
Owner NORTHEASTERN UNIV
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