A magneto-rheological fluid two-way damping regulating valve

Abstract

The invention discloses a magnetorheological fluid two-way damping regulating valve. The magnetorheological fluid two-way damping regulating valve comprises a piston rod, an upper end cover, a lower end cover, a squeezing valve assembly, a damping regulating mechanism, a piston valve system, and a working cylinder. The squeezing valve assembly comprises a valve core, a squeezing valve body, a squeezing valve base, excitation coils, magnetorheological fluid, and magnetic isolation rings. The damping regulating mechanism comprises the valve core, sliding blocks, sealing rings, sliding block return springs, sliding block supporting rods, and damping openings; the upper end cover matches with the lower end cover in a threaded mode and the damping opening C is thereby formed. The size of the damping opening C can be manually adjusted via threads on the upper end cover and the first adjustment of damping force is thereby realized. In the moving process of the valve core, the viscosity of themagnetorheological fluid is controlled by a magnetic field to adjust the resistance force on the valve core, so the displacement of the valve core is controlled; the flow area of two damping openingsis then adjusted via the sliding blocks to realize damping stepless adjustment; and the second adjustment of damping force is thereby realized. The magnetorheological fluid two-way damping regulatingvalve can be applied to single-cylinder and dual-cylinder vibration absorbers and can realize active control and damping stepless adjustment of the vibration absorbers.

Description

technical field

[0001] The invention relates to the field of regulating valves, in particular to a magneto-rheological fluid bidirectional 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] Chinese patent application CN108412940B discloses a magnetorheological fluid valve control damping stepless adjustable shock absorber, which is composed of a magnetorheological fluid valve control unit and a hydraulic unit. In the magnetorheological fluid valve control unit, the piston rod is set as a hollow rod body, and the plunge...

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