Mounting structure for radial extrusion deformation of thin-walled circular tube

Abstract

The invention discloses a mounting structure for radial extrusion deformation of a thin-walled circular tube. The mounting structure comprises a mounting bottom plate, a guide column, a plurality of stand columns, a stress plate, a fixed frame, and a plurality of guide rods, wherein the guide column is mounted on the mounting bottom plate, a rib plate is arranged on the guide column, the stand columns are installed on the mounting bottom plate, the stand columns are arranged on the periphery of the guide column, guide holes are formed on the stand columns, a plurality of pressure head structures are arranged on the stress plate, the fixed frame is arranged on an outer side of multiple pressing head structures in a surrounding mode, the pressing head structures are fixedly installed on thefixed frame, the guide rods are mounted on the stress plate, and the guide rods are arranged in guide holes in a penetrating manner. The mounting structure is advantaged in that the mounting structurecan ensure that the pressing head structures and a thin-wall circular tube have determined action positions, and ensure that a plurality of pressure head structures simultaneously extrude the thin-wall circular tube along the axial direction of the thin-wall circular tube so that oblique loading and rollover of an energy absorption device are avoided, the space for the thin-wall round tube and the guide column to extend out does not need to be reserved at the mounting end, mounting is easy, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of train collision energy absorption, in particular to an installation structure for radial extrusion deformation of a thin-walled circular tube. Background technique [0002] The frequent railway vehicle collision accidents at home and abroad have brought heavy and painful lessons to people. Especially in recent years, with the continuous improvement of the running speed of high-speed rail, the role of railway transportation in relieving traffic pressure has become more and more important. Once a collision accident occurs, the consequences and losses will be unimaginable. As an important infrastructure of the national economy and a means of mass transportation, railways should always take the protection of the lives and property of passengers and passengers as the starting point for the safety of rail transit operation. Considering how to effectively dissipate the energy generated by the train collision an...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned thin-walled pipe radial bulge deformation energy-absorbing device can absorb and dissipate collision kinetic energy relatively smoothly, and the top cover plate, guide plate base, guide column and other components can be reused, the device still has the following deficiencies: (1) The deformation energy-absorbing device cannot ensure that the mutagenic teeth and the cross guide column ribs have the correct position, cannot ensure that the mutagenic teeth are in the middle of the adjacent guide column ribs, and cannot fully utilize the extrusion space ( That is, the fan-shaped area formed by the two ribs adjacent to the thin-walled circular tube and the guide column), affects the energy absorption effect, and if multiple mutagenic teeth cannot simultaneously squeeze the thin-walled circular tube along the axial direction of the thin-walled circular tube, it will produce oblique (2) When the anti-climbing teeth of the deformed energy-absorbing device are hit, the top cover plate moves along the axial direction of the thin-walled plastic energy-absorbing tube. At this time, the thin-walled circular tube and the guide The column will protrude from the inside of the top cover plate. Therefore, when installing the deformation energy absorbing device, it is necessary to consider the design of the installation end. It is necessary to reserve a space for the thin-walled circular tube and the guide column to protrude, so as not to hinder the deformation of the energy absorbing device. Effective extrusion stroke; (3) The deformation energy-absorbing device evenly distributes the mutagenic teeth inside the ring of the top cover plate, which is not conducive to processing and manufacturing, and is not easy to install and disassemble

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