Damping vibration absorber with magnetism-isolating covers, magnetic liquid and application of first-order buoyancy principle

A magnetic liquid, magnetic isolation cover technology, applied in the direction of magnetic springs, springs/shock absorbers, springs, etc., can solve the problems of difficult magnetic liquid flow, fragile permanent magnets, and can not be applied, and reduce the phenomenon of magnetic leakage , The effect of vibration reduction is good, and the effect of avoiding difficult flow

Inactive Publication Date: 2015-09-02
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The technical problem to be solved by the present invention is that the existing magnetic liquid damping shock absorber cannot be effectively used in the ground environment due to various structural defects that cause the magnetic

Method used

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  • Damping vibration absorber with magnetism-isolating covers, magnetic liquid and application of first-order buoyancy principle
  • Damping vibration absorber with magnetism-isolating covers, magnetic liquid and application of first-order buoyancy principle
  • Damping vibration absorber with magnetism-isolating covers, magnetic liquid and application 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] First-order buoyancy principle magnetic liquid damping shock absorber with magnetic isolation cover, such as figure 1 , the vibration damping device includes: a lower magnetic isolation outer sleeve 1, a lower magnetic inner sleeve 2, an upper magnetic isolation outer sleeve 3, an upper magnetic inner sleeve 4, an end cover 5, a first permanent magnet 6, a magnetic liquid 7, an upper spherical shell 8. Lower spherical shell 9, counterweight 10, second permanent magnet 11, housing 12.

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

[0027] When the counterweight 10 is a solid material, the counterweight 10 is put into the lower spherical shell 9 first, and then the lower spherical shell 9 is fixedly connected with the upper spherical shell 8 to form a mass block, and the connection method can be welding or bonding.

[0028] The counterweight 10 is a ...

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Abstract

The invention discloses a damping vibration absorber with magnetism-isolating covers, magnetic liquid and application of a first-order buoyancy principle, and belongs to the field of mechanical engineering vibration. By the aid of the damping vibration absorber, the difficult problem that existing damping vibration absorbers with magnetic liquid cannot be applied to engineering practice due to diversified structural problems can be successfully solved. The damping vibration absorber comprises a lower magnetism-isolating outer sleeve (1), a lower magnetic inner sleeve (2), an upper magnetism-isolating outer sleeve (3), an upper magnetic inner sleeve (4), an end cover (5), a first permanent magnet (6), the magnetic liquid (7), an upper spherical shell (8), a lower spherical shell (9), a counterweight (10), a second permanent magnet (11) and a shell (12). The damping vibration absorber has the advantages that non-magnetic mass blocks formed by the upper spherical shell, the lower spherical shell and the counterweight (10) can move in a cavity when the external vibrates, the magnetic liquid flows in the shell (12), accordingly, energy can be absorbed, frequency difference between the mass blocks and the shell (12) can be formed by first-order buoyancy generated by the first permanent magnet (6) and the second permanent magnet (11) inside the magnetic liquid, and magnetic flux leakage of the permanent magnets can be effectively prevented by the upper magnetism-isolating cover and the lower magnetism-isolating cover.

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. At the same time, it also has broad application prospects on the ground, such as vibration reduction of high-power antennas up to 100 meters long, vibration reduction of precision balances, and so on. However, the existing magnetic liquid damping shock absorbers cannot be applied in engineering practice due to vario...

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Application Information

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