Permanent magnet magnetorheological damper with adjustable damping force

Abstract

The invention discloses a permanent magnet rheological damper with adjustable damping force, which comprises a working cylinder, a piston, two piston rods, a built-in magnetic field generator and a position adjustment mechanism of the built-in magnetic field generator. Both the piston and a piston rod have a central through hole with the same diameter; the built-in magnetic field generator and the position adjustment mechanism of the built-in magnetic field generator are installed in the piston and the piston rod with the central through hole, and the piston is made of a circular ring with the same thickness and high conductivity. The magnetic metal material and the ring-shaped non-magnetic material are combined according to the way that a ring-shaped high-magnetic-permeability metal material and a ring-shaped non-magnetic material are superimposed on each other, and the non-magnetic material is bonded or riveted or embedded. The metal tube is fixed as a whole; the built-in magnetic field generator consists of a disc-shaped permanent magnet and a disc-shaped high-magnetic-permeability metal material with the same thickness. After being assembled in a stacked way, it is fixed as a whole by bonding or riveting or embedding in a non-magnetic metal tube. Adjusting the distance between the built-in magnetic field generator and the bottom of the piston hole can change the output damping force of the permanent magnet rheological damper with adjustable damping force.

Description

technical field [0001] The invention belongs to a magnetorheological damper, in particular to a permanent magnet magnetorheological damper with adjustable damping force. Background technique [0002] The magnetorheological damper is an intelligent damping device, and its damping force can be remotely adjusted steplessly through the control power supply. Therefore, the ordinary magnetorheological damper must be equipped with a control power supply to achieve magnetorheological damping. The purpose of adjusting the output damping force of the magneto-rheological damper; in order to reduce the dependence of the magneto-rheological damper on the control power supply, a permanent-magnet magneto-rheological damper has been developed. For example, the patent application number is: a permanent magnet adjustable magnet The rheological damper and the patent application number: 2005100311088 permanent magnet adjustment assembled magnetorheological damper, although they can also work i...

AI Technical Summary

Problems solved by technology

[0002]The magneto-rheological damper is an intelligent damping device, and its damping force can be remotely adjusted steplessly by controlling the power supply. Therefore, the ordinary magneto-rheological damper The rheological damper must be equipped with a control power supply to achieve the purpose of adjusting the output damping force of the magnetorheological damper; in order to reduce the dependence of the magnetorheological damper on the control power supply, a permanent magnet magnetorheological damper has been developed. For example, the patent application number is: ZL2008200999097 for a permanent magnet adjustable magneto-rheological damper and the patent application number is: 2005100311088 for a permanent magnet adjustable assembled magnetorheological damper, although they can also work independently without a control power supply, Although its damping force can also be changed in a certain way, once this type of permanent magnet magneto-rheological damper is manufactured, its damping force cannot be continuously adjusted according to the site conditions. limits

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