Radial uniform-section flow throttling magneto-rheological buffering device

Abstract

The invention discloses a radial uniform-section flow throttling magneto-rheological buffering device. The radial uniform-section flow throttling magneto-rheological buffering device comprises an end cover, a throttling valve and a corrugated pipe; the upper side surface and the lower side surface of a center hole partition plate of the throttling valve and the upper side surface and the lower side surface of an annular channel partition plate are arc surfaces which are concave towards the horizontal center line, and the thicknesses of the arc surfaces are gradually reduced from the outer edges to the centers, so that the distance H between the center hole partition plate and the annular channel partition plate on the upper and lower sides is gradually reduced from the center to the edge; when a radial damping channel diverges from the center to the periphery, a source flow is formed, the radius of the source flow is gradually increased, according to Q = AV, A = 2pi RH, A is the sectional area of the radial damping channel, Q is the flow, V is the flow rate of a magnetorheological fluid, R is increased, and H is reduced, so that A is kept unchanged, and equal-flow and equal-flow-rate throttling is finally realized. The time response characteristic of a buffering system is improved, the control stability is improved, and the safety and reliability of the buffering device can be greatly improved. The buffering device is compact in structure, the length of the damping channel is effectively increased through the multiple stages of partition plates, the occupied space is small, and anti-collision energy can be absorbed to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of automobile collision, in particular to a flow throttling magneto-rheological buffer device with radial and equal cross-sections. Background technique [0002] In recent years, with the rapid development of the country's industry, the automobile industry, as the pillar industry of the manufacturing industry, has seen a sharp increase in the number of automobiles, so it is facing a series of safety problems, so the passive safety technology of automobiles is particularly important. In traffic accidents, frontal collisions are relatively common, mainly through the deformation of the front bumper after collision to absorb energy, so as to reduce the harm to the human body, but with the development of science and technology, this can no longer meet people's needs for safety, so As a new product in the past two decades, the magnetorheological damper has become prominent in buffering collisions. It has great adv...

AI Technical Summary

Problems solved by technology

In the prior art, there is a damping buffer system for automobile collisions, but the flow rate cannot be stabilized, and the time response characteristics of the buffer system are poor, which makes the control stability lacking

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