Damping force adjustable permanent magnet type magnetic current variable damper

Abstract

The invention discloses a damping force adjustable permanent magnet type magnetic current variable damper. The damper comprises a working cylinder, a piston, two piston rods, a built-in magnetic field generator and a position adjusting mechanism for the built-in magnetic field generator. The piston and one piston rod are both provided with a central through hole having a same diameter; the built-in magnetic field generator and the position adjusting mechanism for the built-in magnetic field generator are arranged in the piston and the piston rod which are provided with the central through hole; after a round high magnetic permeability metallic material is lapped with a round non-magnetic permeability metallic material which has a thickness as same as the high magnetic permeability metallic material, the piston is spliced, riveted or embedded into a non-magnetic permeability metallic tube so as to integrate together; and after a round high magnetic permeability metallic material is lapped with a round permanent magnet material which has a thickness as same as the high magnetic permeability metallic material, the built-in magnetic field generator is spliced, riveted or embedded into the non-magnetic permeability metallic tube so as to integrate together. The distance from the built-in magnetic field generator to a piston bottom hole can regulate the output damping force of the damping force adjustable permanent magnet type magnetic current variable damper.

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, such as the patent number: ZL2008200999097 permanent magnet adjustable magnetorheological damper and patent application number: 2005100311088 permanent magnet adjustment assembly type magnetorheological damper, although they can also work independentl...

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Problems solved by technology

[0002] Magneto-rheological damper is an intelligent damping device, the size of its damping force can be remotely and steplessly adjusted by controlling the power supply, therefore, the ordinary magnetorheological damper must be equipped with a control power supply to achieve 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, such as the patent n

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