A magnetic liquid damping shock absorber with a spherical crown surface non-magnetic conduction inertia block

Abstract

The invention discloses a magnetic liquid damping shock absorber containing a spherical crown surface non-magnetic conductive inertia block, and is suitable for shock absorption of a longer object in a spacecraft. One ends of cylindrical permanent magnets selected by the device are inlaid in end covers, and the rest of exposed parts are coated by magnetic liquid; and the cylindrical permanent magnets on the two end covers are symmetrically distributed about the central section of a non-magnetic conductive shell. The adopted non-magnetic conductive inertia block is positioned between the symmetric cylindrical permanent magnets coated by the magnetic liquid, and is cylindrical; the two bottom surfaces of the non-magnetic conductive inertia block respectively contain three concave spherical crowns; and all corresponding bottom surfaces of the three spherical crowns on the bottom surfaces are tangent. The non-magnetic conductive inertia block generates a relative motion with the cylindrical permanent magnets under the effect of inertia force; and the magnetic liquid is extruded by using gap layers orderly changed between the bottom surfaces of the cylindrical permanent magnets and the concave spherical crown surfaces for consuming energy. The device is sensitive to the inertia force, and can effectively perform the shock absorption for planar shock with the characteristics of low frequency and low accelerated speed.

Description

technical field [0001] The invention relates to a magnetic liquid damping shock absorber containing a spherical crown surface non-magnetic conduction inertia block, which belongs to the field of mechanical engineering vibration and is suitable for vibration reduction of long objects in spacecraft. Background technique [0002] Some long objects in the spacecraft (such as solar panels, satellite antennas, etc.) have local vibration problems during the working process. This kind of local vibration often shows the characteristics of low frequency, small displacement and small acceleration. Compared with the magnetic liquid damping Vibrator, other vibration reduction methods are difficult to meet its vibration reduction requirements. Magnetic liquid vibration damping is a new type of vibration damping method, which is highly sensitive to inertial force, and has the advantages of simple structure, small size, large energy dissipation and long life, and can meet the needs of space...

AI Technical Summary

Problems solved by technology

[0004] In addition, the specific gravity of the permanent magnet used in this type of shock absorber is relatively large, and the strength of the magnetic pole is related to the quality of the permanent magnet, so that the structural size and vibration reduction performance of the magnetic liquid damping shock absorber are limited by the quality of the permanent magnet.

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