Magneto-rheological damper with effective full-damping channel

Abstract

The invention discloses a magneto-rheological damper with an effective full-damping channel. The magneto-rheological damper comprises a damper cylinder barrel and a piston body; piston rods extending out of end covers of the damper cylinder barrel are installed at the two ends of the piston body; wire concentration plates A are symmetrically arranged at the upper portion and the lower portion of the piston body, straight wires A which are evenly distributed in the peripheral direction of the piston body are connected between the outer edges of the two wire concentration plates A, and two total inner wires connected with the two wire concentration plates A are led out from wire leading-out holes in the piston rods; wire concentration plates B are symmetrically arranged in end covers of the two ends of the damper cylinder barrel, straight wires B which are evenly distributed in the peripheral direction of the damper cylinder barrel are connected between the outer edges of the two wire concentration plates B, and two total outer wires connected with the two wire concentration plates B extend out from the end covers; and space among the damper cylinder barrel, the piston rods and the piston body is filled with magneto-rheological fluid, and an annular gap between the damper cylinder barrel and the piston body is the damping channel. By means of the magneto-rheological damper, the overall-length effective damping channel is achieved, and the maximum output of the magneto-rheological damper is improved to the greatest degree.

Description

technical field [0001] The invention belongs to the technical field of damping and vibration reduction, and relates to a magnetorheological damper, in particular to a magnetorheological damper with effective full damping channels. Background technique [0002] Magneto-rheological dampers have the characteristics of millisecond-level response speed, large control range and large damping force output, and have become excellent semi-active actuators in industrial applications. At present, magnetorheological dampers have been widely used in vibration reduction and anti-seismic systems of buildings and bridges, and vibration reduction of railway rolling stock and automobile suspension systems. [0003] The magnetorheological damper is a semi-active control device manufactured by using the magnetorheological fluid to realize the liquid-solid two-phase inversion characteristics in a short time (milliseconds) under the action of a magnetic field. According to the stress state and f...

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Problems solved by technology

However, the traditional shear valve magnetorheological damper has a groove on the piston, and the excitation coil is wound in the groove. Due to the limitation of the wire diameter and the number of turns in the excitation coil, the groove usually accounts for more than 1 / 2 of the total length of the piston. , since the damping channel in the groove part of the winding excitation coil has no magnetic field, it is an ineffective length, which not only increases the volume and weight of the damper, but also reduces the maximum output of the magnetorheological damper, and the maximum output loss is about 50%.

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