A magneto-rheological damper with embedded multi-channel bypass channels

Abstract

The invention discloses a magnetorheological damper embedded with multi-path communicating flow passages and belongs to the technical field of semi-active control vibration isolation. The two ends ofa cylinder body are provided with a front end cover, a rear end cover and a cup sleeve. Six magnetic poles are circumferentially arranged in the cylinder body. Independent field coils are wound aroundthe magnetic poles and are wound around the cylinder body in the bus direction of the cylinder body. Each magnetic pole is internally provided with a flow passage. A piston is in direct contact and coaxial with the inner wall of the cylinder body composed of the magnetic poles. A piston rod extends from upper and lower end covers, wherein the portion extending out of the upper end cover is connected with a connecting rod, an upper nut pressing plate and a lower nut pressing plate are arranged on the connecting rod, and a spring is arranged between the lower nut pressing plate and the upper end cover. According to the magnetorheological damper embedded with the multi-path communicating flow passages, the six magnetic poles are combined with the six embedded flow channels, wherein the six magnetic poles not only have a high proportion of effective acting area, but also can meet different requirements by respectively controlling the conducting / interruption, direction and value of the coil current of each magnetic pole; and six-channel embedding can ensure that the damping adjustable multiple is greater than 20 and the volume is small.

Description

technical field [0001] The invention belongs to the technical field of semi-active control vibration isolation, and in particular relates to a magneto-rheological damper embedded with multiple bypass channels. Background technique [0002] The magnetorheological damper is a vibration-reducing and energy-consuming device that uses magnetorheological fluid as the working medium. The damping force can be adjusted by changing the viscosity of the magnetorheological fluid by loading a magnetic field. It has continuously adjustable damping force and occupies less space. With the advantages of small size and low energy consumption, it has shown good development prospects in the fields of automobiles, construction bridges, etc. in recent years, and some products have been applied in actual projects. At present, the traditional hybrid magneto-rheological damper has the problem of discontinuous axial magnetic field distribution, which leads to low utilization of the magnetic field, wh...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a magneto-rheological damper with embedded multi-channel bypass channels, which solves the problem of low magnetic field utilization rate of the damper caused by the unreasonable structure of the traditional valve-type magneto-rheological damper. The problem of uneven magnetic field distribution and small damping force adjustable multiples

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