Cylinder-positioned externally-winding-type magnetorheological damper

Abstract

The invention discloses a cylinder-positioned externally-winding-type magnetorheological damper. The cylinder-positioned externally-winding-type magnetorheological damper comprises a damper cylinder barrel, a piston head arranged in the damper cylinder barrel and a piston rod connected with the piston head; the left and right ends of the damper cylinder barrel are separately connected with a damper left end cover and a damper right end cover in a clearance fit manner through screws; an inner cylinder body is arranged on the inner wall of the damper cylinder barrel; a magnetic shield and a magnetic conductive inner sleeve connected to the inner side of the magnetic shield are arranged between the inner cylinder body and the damper cylinder barrel; a winding groove is formed between the magnetic conductive inner sleeve and the magnetic shield; a magnet exciting coil is wound in the winding groove; according to the cylinder-positioned externally-winding-type magnetorheological damper, themagnet exciting coil is arranged between the damper cylinder barrel and the inner cylinder body; the magnet exciting coil is arranged in an externally-winding mode instead of an internally-winding type, so that the size of the inner cylinder body is reduced; response is fast; the structure is compact; the size is small; the cylinder-positioned externally-winding-type magnetorheological damper isconvenient for working in a narrow space; and the demanded amount of expensive magnetorheological liquid is small, so that the manufacturing cost of the damper is lowered to a certain extent.

Description

technical field [0001] The invention relates to a magneto-rheological damper, more specifically, it relates to an outer-winding magnetorheological damper with a cylinder positioned. Background technique [0002] The magnetorheological damper is a new type of semi-active damping device based on the controllable characteristics of magnetorheological fluid. The damping device can generate resistance to movement and be used to dissipate the energy of movement; It has the advantages of simple structure, small size, easy control and low energy consumption; it is an ideal vibration isolation and anti-seismic device; it has wide application prospects in construction, machinery, military industry, etc. [0003] The traditional spring damper is used in various vibration reduction occasions, but as people's requirements for vibration reduction effect are getting higher and higher, the vibration reduction effect played by the spring damper is gradually unsatisfactory. The advent of mag...

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Problems solved by technology

[0004] In the existing semi-active vibration reduction system based on the magnetorheological damper, since the viscosity of the magnetorheological fluid in the absence of a magnetic field is higher than that of ordinary hydraulic oil, even in the case of no current input, the magnetorheological damping The device also exerts a harder damping force and is less sensitive to vibration

Moreover, the excitation coil wound by the piston head of the traditional magneto-rheological damper results in a larger cylinder volume and faster response, requiring more magnetorheological fluid. At the same time, magnetorheological fluid is more expensive than ordinary hydraulic oil, which increases the magnetic The manufacturing cost of the rheological damper is not suitable for use in places with limited space

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