Composite energy absorption device

Abstract

The invention discloses a composite energy absorption device, which comprises a sleeve, a base and an upper cover, the upper cover is connected to an energy absorption front end of the sleeve, the base is connected to an energy absorption rear end of an energy-absorbing sleeve, and the sleeve is filled with a honeycomb body; a plurality of spiral guide grooves which spirally extend in parallel around the central axis are formed in the wall of the sleeve, and notches which are connected with the spiral guide grooves in a one-to-one correspondence mode and have the same spiral angle are formed in the positions, corresponding to a pipe opening of the sleeve energy absorption rear end, to which the spiral guide grooves extend. The base is provided with a cone-frustum-shaped part, a plurality of blunt cutting edges are arranged on the circumference of the small-diameter end of the cone-frustum-shaped part at intervals, and when the sleeve is connected with the base, the blunt cutting edges are inserted into the notches in the one-to-one correspondence mode. The invention has the following advantages: the energy absorption process is stable, the specific energy absorption is high, and the collision peak force is small.

Description

technical field [0001] The invention relates to a collision energy absorption device, in particular to a composite energy absorption device with multiple energy absorption modes. Background technique [0002] In recent years, the number of transportation equipment such as motor vehicles and high-speed railways has been greatly increased. With the rapid development of engine performance and power and the substantial improvement of the traffic environment, the average driving speed of vehicles has become higher and higher, which has improved travel. Efficiency, but at the same time, the occurrence of traffic accidents has become more frequent, and the collision speed of traffic accidents has also increased significantly. The most important parts of various vehicles colliding are their front and rear parts, especially the front part of the vehicle, which is most prone to high-speed collisions. Therefore, the research on the crashworthiness of the anti-collision beam and the co...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the structure of the energy-absorbing box applied to most automobile bodies is still a common configuration pipe, including thin-walled square tube, thin-walled round tube, etc. The energy absorption stability is poor, and the initial peak force of the collision is large, which can no longer meet the safety of automobiles under high-speed collisions

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