Transportation machine with energy absorbing structure

Abstract

For a transportation machine such as a railway vehicle, a space for a driver is secured while collision energy is absorbed at a time of collision with a large obstacle, and entry of a flying object into a driving cab is prevented by a rigid structure at a time of collision with the flying object. Windows 40, 40 are provided in a flying object barrier plate 50 provided at a tip end portion of a driving cab 25 , and energy absorbing members 100, 100 are penetrated through the windows 40, 40 to be disposed in a form extending outward of the flying object barrier plate 50 from an inside of the driving cab 25 . The energy absorbing members 100, 100 of a large absorbing capacity can be efficiently disposed by utilizing a space of the driving cab 25 provided in a vehicle body. A beam member of a crushable zone 11 a including the flying object barrier plate 50 is firmly placed and can be connected to a survival zone 10.

1 . A transportation machine with an energy absorbing structure, which comprises a driving cab at a front position of a vehicle body, comprising: a flying object barrier plate in a planar shape which is disposed at an end portion in a traveling direction, of the driving cab, with its in-plane orientation in a direction orthogonal to the traveling direction; and an energy absorbing material which is disposed at the vehicle body through a window formed in the flying object barrier plate and projects from the flying object barrier plate. 
   
   
       2 . The transportation machine with an energy absorbing structure according to  claim 1 , wherein
 the energy absorbing material is connected to the flying object barrier plate by a connecting seal member provided at the window.   
   
   
       3 . The transportation machine with an energy absorbing structure according to  claim 1 , wherein
 a tip end position which the energy absorbing material occupies at a time of maximum collapse is set at a position outward of the flying object barrier plate.   
   
   
       4 . The transportation machine with an energy absorbing structure according to  claim 1 , wherein
 at least a portion of the energy absorbing material, which projects from the flying object barrier plate, is divided into two energy absorbing member portions of upper and lower units, and that   one of tip end sides of both of them projects more than the other.   
   
   
       5 . The transportation machine with an energy absorbing structure according to  claim 1 , wherein
 at least a portion of the energy absorbing member, which projects from the flying object barrier plate, is divided into two energy absorbing member portions of upper and lower units, and   the energy absorbing member portions of the two upper and lower units are disposed up and down with a center position in the vertical direction of an underframe of the vehicle body as a center.   
   
   
       6 . The transportation machine with an energy absorbing structure according to  claim 1 , wherein
 a cover for covering the transportation machine is provided at a front side of the flying object barrier plate.