Collision energy absorbing device and railway vehicle having the device

Abstract

A railway vehicle having an impact energy absorbing device capable of avoiding coincidence between starts of deformation of the impact energy absorbing device in the event of collision. The impact energy absorbing device has a plurality of energy absorbing members 11 and 12 which pressure-collapse in the event of collision to absorb impact energy, and which are mounted in a predetermined region in the longitudinal direction of the body of a vehicle while being spaced apart in the car body width direction. Front ends of the energy absorbing members 11 and 12 in the collision direction are shifted to a plurality of positions (jutted out by L). In this impact energy absorbing device, the energy absorbing members 11 and the like are brought into collision with time differences to shift the energy absorbing member collapse times to set time differences between the occurrences of pressure-collapse initial peaks in the energy absorbing members, thereby reducing the peak load as a whole. Full buckling of the energy absorbing members can be prevented by guiding outer portions of the energy absorbing members with a slide guide or disposing buckling preventing members 16 and 17 in spaces 14 and 15 in the energy absorbing members.

Description

technical field [0001] In particular, the present invention relates to a collision energy absorbing device for rail vehicles such as rail vehicles and monorail vehicles, and for alleviating the impact of a collision with an obstacle, and a rail vehicle equipped with the device. Background technique [0002] Rail vehicles typified by rail vehicles may collide with unexpected objects during operation. Taking railway vehicles as an example to cite past collisions, there are many types of objects that unexpectedly collide, ranging from large objects such as road vehicles, trees, and railway vehicles to small objects such as stones, snow blocks, and parts of oncoming vehicles. [0003] Here, consider the case of a rail vehicle colliding with a large object. When colliding with a large object, a large impact is exerted on the railcar due to the collision with the object. There is a view that in such a collision, in order to protect the crew and passengers on board the railcar, t...

AI Technical Summary

Problems solved by technology

[0020] In addition, when the energy absorbing body constituting the collision energy absorbing device is long and thin, there is a problem that the energy absorbing body tends to buckle at the middle part due to the action of the impact load when the energy absorbing body collides.

Insufficient energy absorption when the entire energy absorber buckles

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