A multi-magnetic couple magnetorheological damper with uniform magnetic flux distribution

Abstract

The invention provides a multi-magnetic couple magnetorheological damper with uniform magnetic flux distribution, comprising a cylinder, a piston and a piston rod. The piston includes an even number of magnetic couple structures, and the even number of magnetic couple structures are evenly arranged circumferentially around a magnetically permeable inner ring. arranged in the hollow area of ​​the cylinder; the magnetically permeable inner ring is arranged in the inner circumferential direction of the even-numbered magnetic couple structures, and the outer circumferential direction of the even-numbered magnetic couple structures is provided with a magnetically permeable outer ring; A damping channel is set between the inner wall of the magnetically conductive outer ring and the magnetically conductive outer ring; the piston rod vertically passes through the middle hole of the magnetically conductive inner ring and is axially parallel to the cylinder, and cooperates with the magnetically conductive inner ring; the magnetically conductive outer ring is provided with There are magnetic resistance gaps arranged in the circumferential direction, and the magnetic resistance gap is set between two adjacent magnetic couple structures; the extension of each of the magnetic couple structures provided on the magnetically conductive outer ring constitutes a gradual change in cross-sectional area The extension structure to achieve uniform distribution of the magnetic flux of the damping channel. The invention realizes the uniform distribution of the magnetic force lines of the damping channel of the multi-magnetic couple magnetorheological damper.

Description

technical field [0001] The invention relates to the technical field of structural vibration control, in particular to a multi-magnetic couple magnetorheological damper with uniform magnetic flux distribution. Background technique [0002] At present, magnetorheological dampers are widely used in the field of structural vibration control because of their large output value, wide dynamic adjustable range, fast response speed, and good semi-active controllability. The ever-increasing demand puts forward higher requirements for the miniaturization, light weight, high efficiency and high damping force of magnetorheological dampers. [0003] In traditional magnetorheological dampers, the piston is usually designed as an I-shaped structure, and a single or multiple sets of excitation coils are wound on the coil grooves in the middle area of ​​the piston, so that the magnetorheological fluid is rheologically changed. Since the coil slot occupies most of the axial length of the pist...

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Problems solved by technology

[0004] The invention provides a multi-magnetic couple magneto-rheological damper with uniform magnetic flux distribution, which is used to solve the problems of uneven distribution of magnetic force lines and uncompact structure of the damping channel of the current magnetorheological damper

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