Inverse type magnetic flow damper

Abstract

A kind of inversion magnetic current alter amortisseur,which has application in the absorption of vibration of the building structure and the locomotive cars. It includes the cylinder body,the piston, the piston rod which connected to it, the confinement gasoline device of the both sides of the cylinder body and the cylinder cap, there has magnetic current alternative liquid in the void of the cylinder body, and institutes the magnetizer that generates the magnetic field and the energizing coil and the electromagnet magnetic circuit component which is unitized of the running void, the cylinder body is composed of the master cylinder, or the master cylinder and the set jar, or the master cylinder and bypass jar, its character is:Institutes both the energizing coil and the permanent magnet magnetic circuit, composes the compounded magnetic circuit with the energizing coil and the permanent magnetic field, and also institutes the administer void in the electromagnet circuit, and when the power is cut, the most of the permanent magnetic field that generated by the permanent magnet will pass through the running void, so the amortisseur can work at the great amortization condition. The component of the electromagnet circuit may set at the pertinent position in terms of the different cylinder body. This kind of amortisseur can joint with the controlled structure, fulfills the semiactivly controlled with the absorption of vibration.

Description

Technical field [0001] The invention relates to a new type of magnetorheological damper. The proposed inverter type magnetorheological damper can be applied to the vibration damping control of building structures and the vibration damping of locomotives. It can also be used to make dampers, brakes, clutches, hydraulic valves, etc. used in aerospace, electronics, chemical, energy, instrumentation, medical, health and other fields. Background technique [0002] Magnetorheological damper is a kind of semi-active control device that uses magnetorheological fluid as the working medium. Magnetorheological fluid is a suspension liquid formed by fine soft magnetic particles dispersed in a carrier fluid and has controllable rheological properties with the change of an external magnetic field; when the magnetorheological fluid is subjected to a magnetic field, its viscosity coefficient will follow Increase, when it is subjected to a strong magnetic field, it will become a "solid" state, th...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of existing magnetorheological dampers that require continuous current supply in daily applications, and the control effect deteriorates when the control law fails, by setting permanent magnets in the magnetorheological damper to establish The permanent magnetic field ensures that the damper can work in a large damping state when the power is cut off, and the magnetic field in the air gap of the magnetic circuit is adjusted through the excitation coil to ensure the adjustability of the damping

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