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Magnetic Liquid Damper

A magnetic liquid and shock absorber technology, applied in shock absorbers, friction shock absorbers, shock absorbers, etc., can solve the problems of less friction surface, collision, viscous energy consumption, etc.

Active Publication Date: 2021-06-15
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the related art, the existing magnetic liquid shock absorber is mainly based on the second-order buoyancy principle shock absorber, and its main form is that the damping mass is a permanent magnet, and the fluid shear is generated through the relative motion of the permanent magnet and the magnetic liquid. , so as to achieve the effect of viscous energy consumption, such as document 1 (patent application with publication number CN104074903A), document 2 (patent application with publication number CN102032304A), most of the existing magnetic liquid second-order buoyancy principle shock absorbers have the following disadvantages: 1. The material of the permanent magnet is relatively brittle, and it is likely to cause a collision during the process of extremely high acceleration, which will cause the permanent magnet to break; 2. There are fewer friction surfaces for vibration reduction, and the vibration reduction effect is poor; 3. .Some magnetic liquid shock absorbers cannot be reset in space, making them unusable in space

Method used

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  • Magnetic Liquid Damper

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Embodiment Construction

[0043] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] The following describes a magnetic liquid damper 1000 according to an embodiment of the present invention with reference to the accompanying drawings, as figure 1As shown, the magnetic liquid shock absorber 1000 according to the embodiment of the present invention includes a housing 100, a first pipe 200, a mass 500, a first porous medium member 610, a first magnetic liquid 710, a first reset part and a second reset department.

[0045] The housing 100 defines a cavity 110 .

[0046] At least a portion of the first pipe 200 is disposed within the cavity 110 . The proof mass 500 includes a connected first sliding rod 510, the first sliding rod 510 is mov...

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Abstract

The invention discloses a magnetic liquid shock absorber, comprising: a housing, the housing defines a cavity; a first pipe, at least a part of the first pipe is arranged in the cavity; a mass block, the The mass block includes a connected first sliding rod; a first porous medium part, the first porous medium part is arranged in the first pipeline; a first magnetic liquid, the first magnetic liquid is filled in the Inside the first pipeline, as well as a first reset part and a second reset part, the first reset part cooperates with the mass block so as to apply a first restoring force to the mass block, and the second reset part cooperates with the mass block The masses cooperate to apply a second restoring force to the mass. Therefore, the magnetic liquid damper according to the embodiment of the present invention has the advantages of good vibration damping effect, stable vibration damping effect, and the like.

Description

technical field [0001] The invention relates to the field of mechanical engineering vibration, in particular to a magnetic liquid shock absorber. Background technique [0002] In the field of aerospace, space vehicles are very suitable for the use of passive shock absorbers due to energy constraints, especially for low-frequency, small-amplitude vibrations generated by long and straight objects in spacecraft, such as vibrations of antennas and solar panels. problem. The magnetic liquid shock absorber has the characteristics of zero energy consumption, sensitivity to inertial force, simple structure, fast vibration reduction speed, and long life. It is a passive shock absorber suitable for low-frequency, small-amplitude vibration, so it is especially suitable for aerospace Low-frequency, small-amplitude vibrations of long, straight objects in the field. In addition, magnetic liquid shock absorbers also have broad application prospects in ground systems, such as vibration is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F6/00F16F7/112F16F7/08
CPCF16F6/005F16F7/08F16F7/112
Inventor 李德才李倩孙睿
Owner TSINGHUA UNIV