First-order buoyancy principle based magnetic liquid damping shock absorber with magnetic shielding covers

A technology of magnetic liquid and magnetic isolation cover, which is applied in the direction of shock absorber, magnetic spring, spring/shock absorber, etc., can solve the problems of difficult flow of magnetic liquid, fragile permanent magnet, and can not be applied, so as to reduce leakage Magnetic phenomenon, avoid flow difficulties, enhance the effect of frequency difference

Inactive Publication Date: 2015-09-30
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is that the existing magnetic liquid damping shock absorber cannot be applied in engineering practice due to various structural defects that cause difficulties in the flow of magnetic liquid, fragile permanent magnets, and serious magnetic flux leakage.

Method used

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  • First-order buoyancy principle based magnetic liquid damping shock absorber with magnetic shielding covers
  • First-order buoyancy principle based magnetic liquid damping shock absorber with magnetic shielding covers
  • First-order buoyancy principle based magnetic liquid damping shock absorber with magnetic shielding covers

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Embodiment Construction

[0025] The present invention will be further described with accompanying drawing as specific embodiment:

[0026] A first-order buoyancy principle magnetic liquid damping shock absorber with a magnetic isolation cover, such as figure 1 , the vibration damping device includes: a first permanent magnet 1, a housing 2, a mass block 3, an end cover 4, a second permanent magnet 5, a magnetic liquid 6, an upper magnetically conductive inner sleeve 7, an upper magnetically isolated outer sleeve 8, a lower guide Magnetic inner sleeve 9, the lower magnetic insulation overcoat 10.

[0027] Connections between the parts making up the device:

[0028] First inject the magnetic liquid 6 into the shell 2, and stop injecting the magnetic liquid when the height of the magnetic liquid 6 is half of the height of the shell 2. Then put the mass block 3 into the housing 2, and after the mass block 3 completely sinks into the bottom of the housing 2, continue to inject the magnetic liquid 6 into ...

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Abstract

The invention relates to a first-order buoyancy principle based magnetic liquid damping shock absorber with magnetic shielding covers, belongs to the field of mechanical engineering vibration, and successfully solves the problem that the existing magnetic liquid damping shock absorbers cannot be applied in engineering practice due to various structural problems. The absorber comprises a first permanent magnet (1), a housing (2), a mass (3), an end cap (4), a second permanent magnet (5), magnetic fluid (6), an upper magnetic inner sleeve (7), an upper magnetic shielding outer sleeve (8), a lower magnetic inner sleeve (9) and a lower magnetic shielding outer sleeve (10). When the external vibration occurs, a non-magnetic ball moves in a chamber, the magnetic fluid flows in a recess of the housing (2) to absorb energy, first-order buoyancy formed within the magnetic fluid by the first permanent magnet (1) and the second permanent magnet (5) allows frequency difference to be formed between the mass (3) and the housing (2), so that the maximum vibration damping efficiency is achieved, and the upper and lower magnetic shielding covers effectively prevent magnetic flux leakage of the permanent magnets.

Description

technical field [0001] The invention belongs to the field of mechanical engineering vibration. Background technique [0002] The magnetic liquid damping shock absorber is a passive shock absorber with high sensitivity to inertial force, and has the advantages of simple structure, small size, large energy consumption and long life. Due to the special operating environment of the space vehicle, its own volume, weight and energy carried are subject to certain restrictions, so the magnetic liquid damping shock absorber is very suitable for the low-frequency, small-amplitude vibration reduction of long and straight objects in large spacecraft, such as space stations. Solar panels, antennas, etc. However, the existing magnetic liquid damping shock absorbers cannot be applied in engineering practice due to various structural problems. The specific problems are as follows: [0003] Now the most common magnetic liquid damping shock absorber mainly adopts the second-order buoyancy p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F6/00
CPCF16F6/005F16F2222/06
Inventor 李德才姚杰黄串姜华伟
Owner BEIJING JIAOTONG UNIV
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