Double-access foam metal magneto-rheological fluid damper

Abstract

The invention relates to a double-access foam metal magneto-rheological fluid damper, wherein magneto-rheological fluid foam metal is fully filled in the inner wall of a working cylinder; front and rear end covers are respectively fixed at two ends of the working cylinder; a piston is connected in the working cylinder in a matching manner; piston rods at two ends of the piston respectively extend out of the front end cover and the rear end cover; an excitation coil is wound between two shaft shoulders of the piston; the excitation coil is connected with an external control power supply through an electrification conductor wire passing through a central hole in the middle of one end of the piston; and the external control power supply is used for electrifying the excitation coil. According to the invention, by storing magneto-rheological fluid through foam metal, compared with the traditional magneto-rheological fluid damper, a sealing structure is not required; the structure is simple; furthermore, the amount of required magneto-rheological fluid is greatly reduced; the cost is greatly reduced; furthermore, abrasion of the traditional damper in a sealing clearance can also be reduced; the service life is prolonged; simultaneously, compared with porous sponge, foam metal has the great advantages of being high in intensity, abrasive resistant, adjustable in magnetic conductivity and the like; and an obvious magneto-rheological effect can also be generated; therefore, the double-access foam metal magneto-rheological fluid damper has good application prospect.

Description

technical field [0001] The invention relates to a damper, in particular to a magneto-rheological fluid damper. Background technique [0002] The magnetorheological fluid is mainly composed of carrier fluid, magnetic particles and additives. When there is no external magnetic field, the magnetic fluid exhibits the characteristics of a low-viscosity Newtonian fluid. Once an external magnetic field is added, it will appear as a high-viscosity semi-solid state. [0003] The magnetorheological fluid damper (MR damper) is an adjustable damping device using magnetorheological fluid as the working fluid. The mechanical properties of the magnetorheological fluid damper can be continuously controlled by an external magnetic field. Because magnetorheological fluid dampers have the advantages of wide adjustable range, fast response speed, low power consumption, and simple structure, they have broad application prospects in the fields of civil engineering and vibration control. [0004]...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problems of high cost, difficult sealing and short service life of traditional magnetorheological fluid dampers, the present invention provides a Double-rod foam metal magnetorheological fluid damper, the damper is not only low in cost, but also economical and practical

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