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Double-tapered-angle magnetic liquid shock absorber on basis of first-order buoyancy principle

A magnetic liquid and shock absorber technology, applied in the direction of spring/shock absorber, magnetic spring, spring, etc., can solve the problems of difficult flow of magnetic liquid, low viscous energy consumption efficiency, poor centering effect, etc., to avoid Difficulty in flow, improved centering, protection against impact cracking or loosening and falling

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

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is that the existing magnetic liquid damping shock absorber has problems such as difficult flow of magnetic liquid, fragile permanent magnet, poor centering effect and low viscous energy consumption efficiency due to various structural defects, making it Unable to be applied in engineering practice

Method used

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  • Double-tapered-angle magnetic liquid shock absorber on basis of first-order buoyancy principle
  • Double-tapered-angle magnetic liquid shock absorber on basis of first-order buoyancy principle

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Embodiment Construction

[0024] The present invention will be further described with accompanying drawing as specific embodiment:

[0025] A first-order buoyancy principle magnetic liquid shock absorber with double cone angle, such as figure 1 , the vibration damping device includes: a housing 1 , a first permanent magnet 2 , an upper end cover 3 , a magnetic liquid 4 , a mass 5 , a second permanent magnet 6 , and a lower end cover 7 .

[0026] Connections between the parts making up the device:

[0027] Firstly, the lower end cover 7 is fixedly connected with the housing 1 by welding, bonding or threaded connection, and then the magnetic liquid 4 of half the height of the housing 1 is injected into the housing 1 . Then put the mass 5 into the shell 1, and continue to inject the magnetic liquid 4 after sinking completely to the bottom until the shell 1 is filled with the magnetic liquid. The upper end cover 3 is fixedly connected with the housing 1, and the connection method can be welding, bonding ...

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Abstract

The invention discloses a double-tapered-angle magnetic liquid shock absorber on the basis of a first-order buoyancy principle, and belongs to the field of vibration of mechanical engineering. The problem that due to multiple structural problems, an existing magnetic liquid damping shock absorber cannot be applied to the engineering practice is successfully solved. The double-tapered-angle magnetic liquid shock absorber comprises a shell (1), a first permanent magnet (2), an upper end cover (3), magnetic liquid (4), a mass block (5), a second permanent magnet (6) and a lower end cover (7). When the exterior vibrates, the mass block (5) moves in a cavity, and the magnetic liquid (4) flows in a gap between the inner hole wall of the shell (1) and the mass block (5), so that the energy is absorbed, and the aim of reducing the vibration is achieved; first-order buoyancy formed by the first permanent magnet (2) and the second permanent magnet (6) in the magnetic liquid enables a frequency difference to be formed between the mass block (5) and the shell (1); and the vibration reduction efficiency is maximized.

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 spacecraft, its own volume, weight and energy carried are limited to a certain extent, so the magnetic liquid damping shock absorber is very suitable for the low-frequency, small-amplitude vibration reduction of long straight objects in large spacecraft, such as The solar panels and antennas of the space station also have broad application prospects on the ground, such as the vibration reduction of high-power antennas up to 100 meters long, the vibration reduction of precision balances, and so on. However, the existing magnetic liquid damping shock absorbers cannot be applied in engineering practice ...

Claims

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Application Information

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IPC IPC(8): F16F6/00
CPCF16F6/005
Inventor 李德才姚杰姜华伟黄串
Owner BEIJING JIAOTONG UNIV
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