Railway coach vehicle

Abstract

A railway vehicle coach, including a roof, a box mounted on the roof, a least one primary box support, inserted between the box and the roof, each primary support being arranged in a peripheral part of the box and being suitable for bearing the weight of the box, the coach including at least one secondary support inserted between the box and the roof, each secondary support being arranged in a central part of the box and being able to bear the weight of the box in case of collapse of the roof in the location of a primary support.

1 . A railway vehicle coach, comprising:
 a roof;   a box mounted on said roof;   at least one primary box support, inserted between said box and said roof, each primary box support being arranged in a peripheral part of said box and being suitable for bearing the weight of said box; and   at least one secondary support inserted between said box and said roof, each secondary support being arranged in a central part of said box and being able to bear the weight of said box in case of collapse of said roof in the location of a primary support.   
     
     
         2 . The railway vehicle coach according to  claim 1 , wherein each secondary support is comprised of a material having a melting temperature higher than that of said at least one primary support. 
     
     
         3 . The railway vehicle coach according to  claim 1 , wherein each secondary support is comprised of stainless steel. 
     
     
         4 . The railway vehicle coach according to  claim 1 , further comprising a strip of thermally insulating material inserted between each secondary support and said box. 
     
     
         5 . The railway vehicle coach according to  claim 1 , wherein a vertical space is arranged between each secondary support and said box when said roof has no collapse. 
     
     
         6 . The rail vehicle coach according to  claim 1 , wherein said roof comprises fastening rails, each primary box support being fastened on one of said fastening rails. 
     
     
         7 . The rail vehicle coach according to  claim 6 , wherein each secondary support is fastened to at least one of said fastening rails. 
     
     
         8 . The rail vehicle coach according to  claim 1 , wherein each secondary support has a U shape comprising
 a lower rim fastened to said roof;   an upper rim arranged facing said box; and   a vertical wall connecting said lower and upper rims, the secondary support comprising reinforcing ribs, connecting said lower and upper rims and extending perpendicular to the vertical wall.