Radial Equal Section Flow Throttling Magnetorheological Buffer Device

Abstract

The invention discloses a flow throttling magneto-rheological buffer device with radial equal cross-section, which comprises an end cover, a throttle valve and a bellows. The arc surface with a concave center line, and its thickness gradually decreases from the outer edge to the center, so that the distance H between the upper and lower center hole partitions and the annular channel partition gradually decreases from the center to the edge, when the radial damping channel Diverge from the center to form a source flow, the source flow radius gradually increases, according to Q=AV, A=2πRH, A is the cross-sectional area of ​​the radial damping channel, Q is the flow rate, V is the flow rate of the magnetorheological fluid, R increases and H changes Small so as to ensure that A does not change and finally realize equal flow rate and equal flow rate throttling. Improving the time response characteristics of the buffer system and increasing the control stability can greatly improve the safety and reliability of the buffer device. Moreover, the present invention has a compact structure, the multi-stage partitions effectively increase the length of the damping channel, takes up little space, and can absorb anti-collision energy to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of automobile collision, in particular to a radial equal-section flow throttling magnetorheological buffer device. Background technique [0002] In recent years, with the rapid development of the national industry, the automobile industry, as the pillar industry of the manufacturing industry, the number of automobiles has surged, so it is faced with 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 the 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, magnetorheological dampers have become conspicuous in buffering collisions. They have huge advantages such as simple str...

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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