Axle for rail vehicle having a low-level floor, bogie and corresponding rail vehicle

Abstract

An axle for a rail vehicle including a central shaft, two wheels which are connected in terms of rotation by the shaft and two bearings, each wheel being mounted so as to rotate relative to a bearing about the axis Y of the wheels. The axle further includes at least one cross-piece for reinforcement of the axle in terms of flexion, this cross-piece rigidly connecting the two bearings.

1 - 17 . (canceled)  
   
   
       18 . An axle for a rail vehicle comprising: 
 a central shaft;    two wheels having a wheel axis;    connected in terms of rotation by the central shaft;    two bearings;    each wheel being mounted so as to rotate relative to a respective bearing of the two bending about the wheels axis, the central shaft extending along the wheel axis; and    at least one cross-piece for reinforcement of the axle in terms of flexion, the cross-piece rigidly connecting the two bearings.    
   
   
       19 . The axle as recited in  claim 18  wherein the cross-piece is located at a height lower than a height of the shaft, relative to an upper edge of rails for the rail vehicle.  
   
   
       20 . The axle as recited in  claim 18  wherein the shaft extends inside the cross-piece.  
   
   
       21 . The axle as recited in  claim 18  wherein the shaft has a diameter of between 60 and 140 mm.  
   
   
       22 . The axle as recited in  claim 19  wherein the shaft has a diameter of between 60 and 140 mm.  
   
   
       23 . The axle as recited in  claim 20  wherein the shaft has a diameter of between 60 and 140 mm.  
   
   
       24 . The axle as recited in  claim 18  wherein the cross-piece has a cross-section at least equal to that of the shaft.  
   
   
       25 . The axle as recited in  claim 19  wherein the cross-piece has a cross-section at least equal to that of the shaft.  
   
   
       26 . The axle as recited in  claim 20  wherein the cross-piece has a cross-section at least equal to that of the shaft.  
   
   
       27 . The axle as recited in  claim 21  wherein the cross-piece has a cross-section at least equal to that of the shaft.  
   
   
       28 . The axle as recited in  claim 22  wherein the cross-piece has a cross-section at least equal to that of the shaft.  
   
   
       29 . The axle as recited in  claim 23  wherein the cross-piece has a cross-section at least equal to that of the shaft.  
   
   
       30 . The axle as recited in  claim 20  wherein the cross-piece defines, with the bearings, a sealed space around the shaft.  
   
   
       31 . A bogie for a rail vehicle comprising: 
 a bodywork; and    at least one axle supporting the bogie as recited in  claim 18 .    
   
   
       32 . A rail vehicle comprising: 
 a body; and    at least one bogie for supporting the body as recited in  claim 31 .    
   
   
       33 . The rail vehicle as recited in  claim 32  wherein the wheels have a diameter of between 530 and 660 mm, and further comprising a first floor having a height of between 385 and 510 mm above an upper edge of rails for the vehicle in the region of the bogie.  
   
   
       34 . The rail vehicle as recited in  claim 33  further comprising a second floor having a height of between 335 and 375 mm, the first floor and second floor being connected by a ramp with an inclination of between 5 and 10%.