A creep-proof and step-triggered nested rail vehicle end energy absorbing structure

Abstract

A creep-proof and step-triggered nested rail vehicle end energy-absorbing structure relates to the technical field of rail vehicle passive safety, comprising a primary energy absorbing structure, secondary energy absorbing structure, connecting the cross member structure and the rear end support beam, The primary energy-absorbing structure comprises an energy-absorbing structure with an anti-creeping tooth on one side and an energy-absorbing structure with an anti-creeping tooth on two sides. The secondary energy-absorbing structure comprises an energy-absorbing structure with an equal cross section on one side, an energy-absorbing structure with a variable cross section on one side, an energy-absorbing structure with an equal cross section on two sides and an energy-absorbing structure with a variable cross section on two sides. The platform force of the first-level energy absorption structure is smaller than that of the second-level energy absorption structure, so that the train is triggered step by step in the collision process and energy is absorbed, and the two-level energy absorption structure is more suitable for the collision situation under different speed grades. The box-type energy absorbing structure adopts the form of guiding oblong hole to guide the crushing deformation of the structure, reduces the peak impact force, reduces the damage to the vehicle caused by the collision, ensures the driver and passenger have enough living space, and reduces the loss.

Description

technical field [0001] The invention relates to the technical field of rail vehicle passive safety, in particular to an anti-climbing and hierarchical trigger nested rail vehicle end energy-absorbing structure. Background technique [0002] With the rapid development of rail transit construction at home and abroad, people pay more and more attention to the passive safety design of rail vehicles while improving the active safety design of rail vehicles. From active safety design, reducing the probability of rail train collision accidents, to passive safety design, alleviating the degree of vehicle damage after an accident and reducing the risk of occupant injury have become issues that rail vehicle designers need to consider. [0003] When a rail train collides, the impact force is huge, and the vehicle absorbs energy through the coupler buffer and crush tube to reduce the impact of the impact force on the vehicle. But often the impact speed of the train is relatively high, ...

AI Technical Summary

Problems solved by technology

Moreover, the existing energy-absorbing structure usually adopts a single-box energy-absorbing structure, which has poor stability

The energy-absorbing structure and th

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