Magneto-rheological vibration absorber with multiple magnet exciting coils being in radial arrangement

Abstract

The invention discloses a magneto-rheological vibration absorber with multiple magnet exciting coils being in radial arrangement. The magneto-rheological vibration absorber is mainly composed of an elastic shell, a housing, a magnetic core end cover, a magnetic core, an annular sleeve, outer magnet yokes, magnetic core rods, the magnet exciting coils and the like. The magnetic core is mounted inside a magneto-rheological vibration absorber body. The six magnetic core rods are uniformly mounted on the outer surface of the magnetic core in the circumferential direction. The other end of each magnetic core rod is provided with the corresponding magnet exciting coil and the corresponding outer magnet yoke. The annular sleeve is mounted in a groove in the end face of the magnetic core. The magnetic core end cover, the annular sleeve and six round through holes in the bottom face of the annular groove of the magnetic core are aligned with one another and jointly form a fluid flow channel formagneto-rheological fluid. When external vibration occurs, the elastic shell is pressed to be deformed; the magneto-rheological fluid in a closed containing cavity I enters a closed containing cavityII through the fluid flow channel; and when a current is introduced into the magnet exciting coils, the magneto-rheological fluid at the fluid flow channel generates the controllable damping force, so that the impact generated by the external vibration is counteracted. The magneto-rheological vibration absorber has the beneficial effects of being compact in structure, controllable continuously and particularly applicable to vibration reduction occasions with limited spaces.

Description

Technical field [0001] The invention relates to a vibration absorber, in particular to a magnetorheological vibration absorber with a plurality of excitation coils arranged radially. Background technique [0002] In systems such as mechatronics systems and generators, due to the existence of vibration, which affects the stability and safety of the system, vibration absorption and isolation devices are required to absorb and attenuate vibration. [0003] Traditional vibration damping devices, such as hydraulic shock absorbers, spring shock absorbers, etc., are fixed in their working range and cannot meet the vibration absorption effect in a larger working range, and their work is not continuous, which affects the controllability and control of the system. stability. With the emergence of smart materials, magnetorheological fluids, magnetorheological dampers using magnetorheological fluids as transmission media are widely used in vibration buffer devices. It has the advantages of f...

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Problems solved by technology

However, the size of this magneto-rheological damper is large, which limits its application in occasions with limited space.

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