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Underfilled magnetic liquid shock absorber adopting first-order buoyancy principle

A magnetic liquid and shock absorber technology, which is applied in the direction of magnetic spring, spring/shock absorber, spring, etc., can solve the problems that the mass block is difficult to suspend, the mass block is difficult to move, and cannot be applied, so as to increase the magnetic field gradient, Accelerates the consumption of vibration energy and is conducive to the effect of suspension

Inactive Publication Date: 2017-06-13
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved in the present invention is that the existing magnetic liquid shock absorber cannot be applied in engineering practice due to various structural defects that cause the mass block to be difficult to suspend, the mass block to move, and the vibration reduction efficiency to be low.

Method used

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  • Underfilled magnetic liquid shock absorber adopting first-order buoyancy principle

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Embodiment Construction

[0027] The present invention will be further described with accompanying drawing as specific embodiment:

[0028] A non-filled magnetic liquid first-order buoyancy principle shock absorber, such as figure 1 , the damping device includes: a base 1, an annular permanent magnet 2, a housing 3, a nut 4, a sealing ring 5, a gasket 6, a magnetic liquid 7, a first circular permanent magnet 8, an end cover 9, a mass block 10, an empty Cavity 11, second circular permanent magnet 12, bolt 13. Connections between the parts making up the device:

[0029] The second circular permanent magnet 12 and the housing 3 are fixedly connected to the inner end surface of the bottom of the housing 3, and the connection method can be welding, bonding or threaded connection; insert the gasket 6 from the bottom of the housing 3 into the outer side of the housing 3 Next, insert the ring-shaped permanent magnet 2 from the bottom of the shell 3, and contact the gasket 6, and connect the base 1 with the o...

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Abstract

The invention discloses an underfilled magnetic liquid shock absorber adopting a first-order buoyancy principle, belongs to the field of vibration in mechanical engineering, and successfully solves the problem that an existing magnetic liquid shock absorber cannot be applied in engineering practice due to many structural problems. The device comprises a base (1), an annular permanent magnet (2), a shell body (3), nuts (4), a sealing ring (5), a washer (6), a magnetic liquid (7), a first circular permanent magnet (8), an end cover (9), a mass block (10), a cavity (11), a second circular permanent magnet (12) and bolts (13), wherein the shell body is not completely filled with the magnetic liquid (7); the non-magnetic mass block (10) moves in the shell body (3), and generates friction, collision and viscous shearing with the magnetic liquid (7) to consume energy in the case of external vibration; and an electrical eddy current is generated in the mass block (10) to accelerate consumption for the vibration energy and achieve the purpose of shock absorption when the mass block (10) is made from a conductor material.

Description

technical field [0001] The invention belongs to the field of mechanical engineering vibration. Background technique [0002] The magnetic liquid 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 are limited to a certain extent, so the magnetic liquid shock absorber is very suitable for the low-frequency, small-amplitude vibration reduction of long straight objects of large spacecraft, such as the solar sail of the space station boards, antennas, etc. 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, etc. However, the existing magnetic liquid shock absorbers cannot be applied in engineering practice due to various...

Claims

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Application Information

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IPC IPC(8): F16F6/00
CPCF16F6/005
Inventor 李德才黄串姚杰陈一镖姜华伟
Owner BEIJING JIAOTONG UNIV
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