Inner cone angle magnetic liquid damping shock absorber

Abstract

The invention relates to a magnetic fluid damping vibration absorber based on an inner cone angle and belongs to the field of mechanical engineering vibration. According to the magnetic fluid damping vibration absorber, the problem that an existing magnetic fluid damping vibration absorber cannot be applied in actual engineering due to multiple structure problems is successfully solved. The magnetic fluid damping vibration absorber comprises a shell (1), magnetic fluid (2), a left positioning permanent magnet (3), a left positioning rod (4), a first energy-dissipation permanent magnet (5), a connecting rod (6), a second energy-dissipation permanent magnet (7), a right positioning rod (8), a right positioning permanent magnet (9), a right end cover (10), a vent groove (11) and a left end cover (12). When the outside vibrates, the magnetic fluid moves along with the left positioning permanent magnet (3), the first energy-dissipation permanent magnet (5), the second energy-dissipation permanent magnet (7) and the right positioning permanent magnet (9) to absorb energy; the left positioning permanent magnet (3) and the right positioning permanent magnet (9) allow a frequency difference to be formed between a mass block and the shell (1) due to action of the cone angle, and therefore damping efficiency reaches the maximum.

Description

technical field [0001] The invention relates to an inner cone angle magnetic liquid damping shock absorber, which is suitable for vibration reduction of long and straight objects in spacecraft. 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 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 and straight objects in large spacecraft, such as the solar energy of the space station. 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 ex...

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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 has problems such as difficulty in the flow of the magnetic liquid and easy tilting of the permanent magnet and scratches on the cone angle of the shell due to various structural defects, so that it cannot be used in engineering practice. get applied

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