Magnetorheological fluid one-way damping regulation valve

Abstract

The invention discloses a magnetorheological fluid one-way damping regulation valve which mainly comprises a piston rod, a reset spring, a squeezing valve assembly, a movable valve cover, a circulation valve disc group, a rebound valve disc group, a piston base, a working cylinder and the like. The squeezing valve assembly comprises a valve element, a squeezing valve body, a squeezing valve base,a magnet exciting coil, a magnetorheological fluid and a magnetic isolating ring. The lower end of the piston rod and the upper end of the squeezing valve body are in threaded connection, the lower end of the valve element and the lower end of the movable valve cover are in threaded connection, and the lower end of the squeezing valve body and the upper end of the piston base are in threaded connection; and the valve element, the magnet exciting coil, the magnetorheological fluid and the magnetic isolating ring are encapsulated into the squeezing valve body through screw threads between the lower end of the squeezing valve body and the upper end of the squeezing valve base. In the recovery stroke, along with the increase of the electric current of the magnet exciting coil, the viscosity ofthe magnetorheological fluid is increased, the valve element drives the movable valve cover to move downwards, the suffered resistance is increased, the opening force of each valve disc is further increased, and a damping force and a current magnitude are changed in direct proportion. The magnetorheological fluid one-way damping regulation valve provided by the invention has the advantages of less magnetorheological fluid usage amount, fast dynamic response speed, simple structure and the like, the comfort and the controllability of vehicle driving are effectively improved, and the comfort inriding is greatly improved.

Description

technical field [0001] The invention relates to a magneto-rheological fluid damping regulating valve that can be used in the field of single-tube and double-tube shock absorbers, in particular to a magneto-rheological fluid unit for shock absorbers that can perform stepless adjustment of damping according to different working conditions. to the damping regulating valve. Background technique [0002] The shock absorber is an important damping element of the automobile suspension system. It is mainly used to absorb the shock and vibration generated during the driving of the vehicle. comfortability. The traditional non-adjustable damping shock absorber can no longer meet people's needs. In order to meet the needs of different road conditions, the research and development of adjustable damping shock absorber has been deepening in recent years. [0003] The patent with application number 201810247280.4 discloses a magnetorheological valve-controlled damping stepless adjustable ...

AI Technical Summary

Problems solved by technology

The patent with the application number 201610440467.7 invented a magneto-rheological fluid adjustable damping shock absorber. This kind of shock absorber can adjust the damping force to a certain extent, and improve the heat dissipation and installation and maintenance problems during work. However, it needs Filling the working cylinder with magnetorheological fluid requires more magnetorheological fluid, which increases the manufacturing cost of the shock absorber

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