Double-cylinder by-pass type magnetorheological vibration damper

Abstract

The invention relates to a double-cylinder by-pass type magnetorheological vibration damper. The vibration damper comprises a working cylinder barrel, a liquid storage cylinder barrel, a piston and a piston rod, wherein the piston rod penetrates through a guide ring, and the guide ring is connected with a liquid storage cylinder body together; a magnetorheological effect valve and the whole vibration damper are installed together by the guide ring; a magnetic conductive sleeve connected with the magnetorheological effect valve by a magnetic insulation gasket is sequentially provided with an upper magnetic conductive plate, a magnetic insulation washer, a middle magnetic conductive plate, a magnetic insulation washer and a lower magnetic conductive plate along the inner axial direction; electromagnetic coils are sleeved on the circumferences of the upper magnetic conductive plate, the middle magnetic conductive plate and the lower magnetic conductive plate by magnetic insulation sleeves; the middle parts of the upper magnetic conductive plate and the lower magnetic conductive plate are provided with axial through holes communicated with a liquid discharge hole and a press plate oilduct; and three arc grooves are uniformly distributed at the circumference of the middle magnetic conductive plate. When the piston rod moves, magnetorheological fluid flows among a working cylinder,the magnetorheological effect valve and a liquid storage cylinder. The invention can ensure a larger stroke and be beneficial to dissipating the heat of the electromagnetic coils; and the flow of themagnetorheological fluid in the coils not only can generate large damping force but also ensure portable integration.

Description

technical field [0001] The invention relates to a novel controllable shock absorber utilizing magneto-rheological technology. Background technique [0002] Magneto-rheological fluid is a suspension in which soft magnetic particles and surface-active dispersants are added to non-magnetic carrier liquid. Under the action of an external magnetic field, its viscosity can be adjusted continuously, rapidly and reversibly. Magnetorheological shock absorbers use electromagnetic coils to change the viscosity of magnetorheological fluid to generate continuously adjustable damping force. The semi-active control technology based on magneto-rheological shock absorbers has been widely used in vehicle engineering, aerospace, civil engineering, sports equipment and other fields. [0003] The magneto-rheological shock absorbers invented and used at present are mainly divided into single-tube type and double-tube type shock absorbers structurally. Patents CN1601139A, CN2525303Y, etc. are do...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems such as the small stroke of the single-rod shock absorber and the difficulty in heat dissipation of the double-rod shock absorber, the present invention provides a new type of double-barrel bypass that can not only ensure a larger stroke, but also facilitate the heat dissipation of the electromagnetic coil. General type magnetorheological shock absorber

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