Double-cylinder magnetorheological vibration reducer adopting coaction of external coil and permanent magnet

Abstract

The invention discloses a double-cylinder magnetorheological vibration reducer adopting coaction of an external coil and a permanent magnet. The double-cylinder magnetorheological vibration reducer comprises a magnetorheological vibration reducer body and a lifting lug; the magnetorheological vibration reducer body comprises a working cylinder, a liquid storage cylinder and a dustproof shell concentrically sleeved; a piston with a piston rod is matched in the working cylinder at intervals, and the working cylinder is fully filled with magnetorheological fluid; the liquid storage cylinder is filled with the magnetorheological fluid and compensation gas, and a liquid storage cylinder sealing mechanism and a base for sealing are fixedly arranged at the upper and lower ends; the top end of thepiston rod penetrates through the guide base and the liquid storage cylinder sealing mechanism in sequence, and extends out of the working cylinder to fixedly connect with the upper end of the dustproof shell; a magnetic exciting device is embedded in the dustproof shell; and an end cover is arranged at the lower end of the dustproof shell. The double-cylinder magnetorheological vibration reducerreduces the machining and assembly difficulty, saves the machining time and cost, prevents pollution of the magnetorheological fluid in the maintenance process, facilitates dissipation of coil heat,and prevents performance reduction caused by overheat of the magnetorheological fluid.

Description

technical field [0001] The invention belongs to the technical field of shock absorbers, and in particular relates to a double-barreled magneto-rheological shock absorber which uses external coils and permanent magnets to work together. Background technique [0002] Magnetorheological fluid is an intelligent material that can change its rheological properties with the change of the applied magnetic field strength. It is mainly composed of small ferromagnetic particles with high magnetic permeability and low magnetic hysteresis, non-magnetic carrier liquid and stabilizer. According to the magnetorheological effect of magnetorheological fluid, magnetorheological shock absorbers have been produced. By changing the magnitude of the coil current in the shock absorber, the magnetic field strength is changed, and then the rheological characteristics of the magnetorheological fluid are changed, so that the damping coefficient of the shock absorber is changed, and a continuously adjus...

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Problems solved by technology

Although the rubber bushing has good reliability and durability, due to the inherent damping characteristics of its material, the attenuation effect on low frequency and large amplitude vibration is poor

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