A test device for a quasi-zero stiffness vibration isolator

A technology of quasi-zero stiffness and test device, which is applied in the field of vibration response test of vibration isolators, can solve the problems of inconvenient replacement of device components, cumbersome device structure, inflexible adjustment of device stiffness range, etc., to solve the problem of large volume and flexible installation with the effect of uninstalling

Active Publication Date: 2019-10-25
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, most commonly used vibration isolation tests are composed of several stiffness components to build a quasi-zero stiffness vibration isolator test platform. Component loading is more cumbersome, etc.

Method used

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  • A test device for a quasi-zero stiffness vibration isolator
  • A test device for a quasi-zero stiffness vibration isolator
  • A test device for a quasi-zero stiffness vibration isolator

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0031] Such as figure 1 As shown, the overall structure of a test device for a quasi-zero stiffness vibration isolator according to the present invention includes a negative stiffness adjustment mechanism 1 , a positive stiffness adjustment mechanism 2 , and a beam-damping block mechanism 3 .

[0032] Such as figure 2 As shown, the negative stiffness adjustment mechanism 1 is used to adjust the negative stiffness value of the system; the negative stiffness adjustment mechanism includes a screw hand wheel 101, a bearing seat A102, a bottom support plate 103, a lead screw 104, and a moving actuator 105 , lead screw slider 106, bearing seat B107, spring 108, bolt 109, nut 110, deep groove ball bearing 111; the bottom support plate 103 is connected with bearing seat A102 and bearing seat B107 by screws; bearing seat A and...

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Abstract

The invention provides a test device for a quasi-zero-stiffness vibration isolator, belonging to the technical field of vibration response tests of vibration isolators. The device includes a negative stiffness adjustment mechanism, a positive stiffness adjustment mechanism, and a beam-damping block mechanism. The negative stiffness adjustment module and the positive stiffness adjustment module are connected sequentially and installed on the beam-mass block system. The test device for a quasi-zero stiffness vibration isolator can not only realize the stable longitudinal vibration of the system under test, but also flexibly adjust the positive and negative stiffness values ​​of the overall mechanism; the invention is suitable for quasi-zero stiffness isolators The vibration model test of the vibrator solves the problems of the current quasi-zero-stiffness vibration isolator device, such as the complicated use method, the inability to flexibly adjust the stiffness of the body mechanism, and the complicated replacement process of the stiffness components.

Description

technical field [0001] The invention belongs to the technical field of vibration response tests of vibration isolators, and relates to a test device for a quasi-zero stiffness vibration isolator whose positive and negative stiffness can be flexibly adjusted. Background technique [0002] In engineering technology, there are cyclical changes in physical state or reciprocating motion of objects, that is, vibration phenomenon. The vibration of vehicles makes people feel uncomfortable, the vibration of precision instruments will affect the measurement results, and the vibration of earthquakes will affect the structure of buildings. The severe vibration of bridges and houses may suddenly collapse when they resonate, causing tragedy of death and injury. Vibration isolators can slow down the impact of this problem. Since this problem is a complex nonlinear vibration dynamics problem, it involves impact load, resonance, stiffness nonlinearity, damping nonlinearity, material nonlinea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01M7/02
CPCG01M7/02G01M7/025G01M13/00G01M13/028F16F2228/063F16F2228/066F16F15/067F16F15/002F16F15/022F16F15/046
Inventor 仇越罗忠朱云鹏韩贵鑫
Owner NORTHEASTERN UNIV LIAONING
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