Stiffness and damping adjustable magnetic liquid shock absorber with magnetic shield

Abstract

The invention discloses a rigidity and damping adjustable magnetic liquid vibration absorber with magnetic conductive covers, and belongs to the field of mechanical engineering vibration. The problemthat a magnetic liquid shock absorber in the related art cannot effectively adjust the rigidity and damping can be solved. The rigidity and damping adjustable magnetic liquid shock absorber with the magnetic conductive covers comprises a shell, an upper liquid passage, an upper partition plate, an upper piston, an upper telescopic device, an upper magnetic conductive cover, an upper displacement sensor, an upper chamber through hole, an upper permanent magnet, an inertia mass block, a middle chamber through hole, a lower liquid passage, a lower partition plate, a lower chamber through hole, alower displacement sensor, a lower telescopic device, a lower magnetic conductive cover, a lower permanent magnet, a lower piston and a magnetic liquid. According to the rigidity and damping adjustable magnetic liquid vibration absorber with the magnetic conduction covers, when outside vibration occurs, the rigidity and the damping can be adjusted by controlling the mass of the magnetic liquid incontact with the upper surface and the lower surface of the inertial mass block.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering vibration, in particular to a magnetic liquid shock absorber with adjustable stiffness and damping with a magnetic permeable cover. Background technique [0002] In the related art, the magnetic liquid shock absorber has high sensitivity to inertial force, simple structure and small volume, and is very suitable for low-frequency and small-amplitude vibration reduction of long and straight objects in large spacecraft, such as solar panels of 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, etc. However, most of the existing magnetic liquid shock absorbers are passive shock absorbers. The stiffness and damping of the shock absorbers are not adjustable, and the vibration suppression performance of random vibrations with large chang...

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a kind of rigidity and damping adjustable magnetic liquid shock absorber with magnetic permeable cover, the stiffness and damping of described shock absorber are adjustable, thereby can solve the magnetic liquid that exists in the related art The shock absorber cannot realize the adjustment of stiffness and damping, so that it cannot be actively controlled according to the vibration situation, and its application in engineering practice is limited.

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