Compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator and design method thereof

A compression spring, quasi-zero stiffness technology, applied in spring/shock absorber, shock absorber, low internal friction spring, etc., can solve the problem that there are few researches on quasi-zero stiffness vibration isolators with six degrees of freedom, and achieve low price , good reliability, and simple structural system

Inactive Publication Date: 2016-08-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many design schemes for single-degree-of-freedom quasi-zero-stiffness vibration isolators

Method used

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  • Compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator and design method thereof
  • Compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator and design method thereof
  • Compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator and design method thereof

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Embodiment Construction

[0029] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0030] Such as figure 1 As shown, a compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator of the present invention includes an outer frame 1, a vibration-isolated box 2, and 6 isolators distributed on six surfaces of the vibration-isolated box 2. Vibration module 3. The outer frame 1 is fixed to the foundation. When the foundation vibrates, the frame 1 will vibrate. Objects that need vibration isolation are installed in the vibration isolation box 2. The bottom of the vibration isolation module 3 is fixed through the frame 3.1 and the outer frame 1, and the other end is connected to the vibration isolation box 2 through a connecting piece 3.2.

[0031] Such as figure 2 As shown, the vibration isolation module 3 consists of a frame 3.1, a connector 3.2, a vertical compression spring 3.3, and four lateral compression spr...

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Abstract

The invention discloses a compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator and a design method thereof. The compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator comprises a fixed outer framework, a box body subjected to vibration isolation arranged in the outer framework, and vibration isolating modules which are respectively distributed on the six surfaces of the box body subjected to vibration isolation and connected with the outer framework and the box body subjected to vibration isolation; each vibration isolating module comprises a framework fixed to the outer framework, and a connecting piece fixed to the box body subjected to vibration isolation; a vertical compression spring is arranged inside the framework in the vertical direction; four lateral compression springs are arranged in the lateral direction of the framework; all the four compression springs which are the same as one another are connected with the framework and the connecting piece through joint bearings, so that the compression springs are guaranteed to be capable of rotating freely relative to the framework and the connecting piece. The six-degree-of-freedom quasi-zero stiffness vibration isolator has symmetry, so that restoring force characteristics which are the same as one another exist in three translation directions, and restoring moment characteristics which are the same with one another exist in three rotation directions. The invention further discloses a design method of the vibration isolator. The vibration isolator can realize low frequency vibration isolation in six directions.

Description

Technical field [0001] The present invention relates to a vibration isolator, in particular to a compression spring type six-degree-of-freedom quasi-zero stiffness vibration isolator and a design method thereof. The vibration isolator of the present invention has good low-frequency vibration isolation characteristics and is used for isolating precision instruments. The vibration field has important application value. Background technique [0002] Precision instruments have high requirements on the use environment, especially the vibration in the environment will seriously affect the use of the instrument. Therefore, it is necessary to design a vibration isolator to reduce the vibration of the instrument. For the vibration isolator, the smaller the spring stiffness used, the better the vibration isolation effect; but reducing the stiffness will reduce the load-bearing capacity of the vibration isolator. Therefore, the researchers put forward the concept of "quasi-zero stiffness ...

Claims

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Application Information

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IPC IPC(8): F16F7/104F16F3/04
CPCF16F3/04F16F7/104
Inventor 郑宜生赵嗣瑜张希农徐斌斌路广霖张旭
Owner XI AN JIAOTONG UNIV
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