Spin-mixing magnetorheological fluid high-speed shock absorber and magnetorheological fluid rotational flow mixing method thereof

Abstract

The invention discloses a spin-mixing magnetorheological fluid high-speed shock absorber and a magnetorheological fluid rotational flow mixing method thereof. The shock absorber comprises a damping cylinder for pouring a magnetorheological fluid, a piston and a push rod, wherein the piston is located in the damping cylinder, the damping cylinder is divided into a forward pressure cavity at the front part and a reverse pressure cavity at the back part, the end, located at the reverse pressure cavity, of the piston is provided with a rotational flow spray disc, and the edge of the rotational flow spray disc is provided with a tangential spray hole; a one-way valve flow control channel is arranged in the piston, and a liquid inlet of the one-way valve flow control channel is located at the end, located at forward pressure cavity, of the piston; and an outlet of the one-way valve flow control channel communicates with the tangential spray hole of the rotational flow spray disc, when the impact is encountered, a push rod pushes the piston to extrude the magnetorheological fluid in the forward pressure cavity, part of the magnetorheological fluid is forced to be directly sprayed out fromthe tangential spray hole of the rotational flow spray disc through the one-way valve flow control channel, so that the magnetorheological fluid forms a rotational flow in the reverse pressure cavity. The shock absorber has the advantages that magnetic induction particles of the magnetorheological fluid in a buffer are uniformly distributed in the magnetorheological fluid, so that the buffer is always in the optimal vibration damping state.

Description

technical field [0001] The invention relates to a high-speed shock absorber for spin-mixed magneto-rheological fluid, which belongs to the technical field of mechanical vibration reduction. Background technique [0002] In the high-speed impact environment, the mechanical system can resist the instantaneous large impact force of the structure, and the buffer has always played a huge role. The basic principle of the buffer is that the two-way reciprocal damping stroke converts the impact kinetic energy into heat energy, that is, the forward impact damping stroke and the reverse reset damping stroke. When encountering an impact, the strong impact force makes the push rod push the piston to slide forward for a certain distance in the damping fluid of the damping cylinder. Part of its strong kinetic energy is absorbed by the damping fluid in the damping cylinder and converted into heat energy, and the other part of the kinetic energy is absorbed by the damping fluid in the dampi...

AI Technical Summary

Problems solved by technology

However, in practical applications, the magnetorheological fluid used as a damping fluid, the magnetically sensitive particles formed by the mixture of silicon oil and iron ions contained in it, tend to precipitate in the magnetorheological fluid, resulting in too much accumulation at the bottom of the damping cylinder during the impact process. The magneto-inductive particles make the magnetorheological fluid pass through the gap between the piston and the damping cylinder during the damping process to receive the magnetic field magnetorheological action, the magnetorheological fluid in the lower gap becomes too thick, and the magnetorheological fluid in the upper gap The liquid is obviously thinner, resulting in uneven force during the piston movement, which not only directly reduces the vibration damping effect, but also significantly reduces the service life of the buffer

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