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A vibration isolator based on quasi-zero stiffness

A quasi-zero stiffness, vibration isolator technology, applied in the direction of spring/shock absorber, non-rotational vibration suppression, magnetic spring, etc., to achieve low cost, ensure vibration isolation effect, and high reliability

Active Publication Date: 2019-12-27
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A vibration isolator based on quasi-zero stiffness
  • A vibration isolator based on quasi-zero stiffness
  • A vibration isolator based on quasi-zero stiffness

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings. like 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 magnetorhe...

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Abstract

The invention discloses a vibration isolator based on quasi-zero stiffness, which belongs to the field of ultra-precision vibration reduction. The isolator includes a slotted disc spring with a negative stiffness displacement interval as the main elastic element, on which a magnetorheological elastomer with smaller stiffness is connected in parallel; the magnetorheological elasticity is adjusted through a stiffness adjustment device The stiffness of the body enables the entire vibration isolation system, which is composed of slotted disc springs and magnetorheological elastomers in parallel under load, to meet the requirement of quasi-zero stiffness under a certain working displacement range. In order to achieve the low inherent requirements of precision vibration damping systems Frequency, high load-bearing capacity, and small deformation provide possibilities.

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 Patents(China)
IPC IPC(8): F16F6/00F16F1/32F16F15/03F16F15/04
CPCF16F1/32F16F6/00F16F15/03F16F15/04
Inventor 史啸天李鹤
Owner NORTHEASTERN UNIV LIAONING
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