Rail vehicle

Abstract

The invention relates to a rail vehicle comprising a chassis provided with individual wheels which are respectively mounted on axle carriers in such a way that they can pivot in the horizontal direction about a vertical steering axis. Said rail vehicle also comprises a steering actuator associated with each wheel, for adjusting a pre-determined steering angle about the vertical steering axis, the wheels ( 1 ) of the axles being respectively mounted in such a way that they can be pivoted in the vertical direction about a horizontal camber axis (S) and can be acted upon by means of a camber actuator ( 7 ) in order to adjust a pre-determined camber angle (α S ).

1 . A rail vehicle with a chassis provided with individual wheels which are respectively mounted on axle carriers, which are mounted in such a way that they can pivot in the horizontal direction about a vertical steering axis, and a steering actuator associated with each respective wheel for adjusting a predetermined steering angle about the vertical steering axis, thereby characterized, that the wheels ( 1 ) of the axle respectively are mounted pivotable in the vertical direction about a horizontal camber axis (S) and by means of a camber actuator ( 7 ) actuatable for adjusting a predetermined camber angle (α S ). 
     
     
         2 . The rail vehicle according to  claim 1 , wherein the camber actuator ( 7 ) is coupled with the wheel ( 1 ) and wherein the camber actuator ( 7 ) is controlled in such a manner, that the wheel ( 1 ) is oriented in a centered or a chamfered position, in which exclusively normal forces are transmitted at the wheel contact point (P). 
     
     
         3 . The rail vehicle according to  claim 1 , wherein the camber actuator ( 7 ) is controlled in such a manner, that the camber angle (α S ) is the same as an acute angle (α F ), which is comprised of the sum of a vertical force (F V ) running in the vertical direction and a transverse force (F Q ) running in the horizontal direction and extends or arranges on the one hand the resulting force (F R ) acting upon the wheel contact point (P) of the rail and on the other hand on the vertical force (F V ). 
     
     
         4 . The rail vehicle according to  claim 1 , wherein the camber actuator ( 7 ) is controlled in such a manner, that the camber angle (α S ) of the wheel  1  is adjusted according to the relationship 
       
         
           
             
               
                 
                   tan 
                    
                   
                       
                   
                    
                   
                     α 
                     S 
                   
                 
                 = 
                 
                   
                     v 
                     2 
                   
                   
                     rg 
                     _ 
                   
                 
               
               , 
             
           
         
       
       wherein v is the speed of the rail vehicle, r the steering radius according to the curve being negotiated by the rail vehicle, and g is gravitational acceleration. 
     
     
         5 . The rail vehicle according to  claim 1 , wherein the wheel ( 1 ) is mounted on the chassis ( 2 ) via a four-bar linkage. 
     
     
         6 . The rail vehicle according to  claim 1 , wherein the wheel ( 1 ) is mounted via a king pin steering in the chassis ( 2 ). 
     
     
         7 . The rail vehicle according to  claim 1 , wherein the control unit acts on a camber actuator ( 7 ) engaging the wheel ( 1 ) via an articulated linkage, in such a manner, that the wheel ( 1 ), depending upon the steering angle (α L ), is pivoted out of a central position (M) by camber angle (α S ) in the support axis (S). 
     
     
         8 . The rail vehicle according to  claim 1 , wherein the camber actuator ( 7 ) is linked directly to the wheel ( 1 ), in such a manner, that the wheel ( 1 ) is pivotable about a fixed camber axis (S), which runs approximately the height of one of the areas of the wheel ( 1 ) close to the rail. 
     
     
         9 . The rail vehicle according to  claim 1 , wherein the camber actuator ( 7 ) is linked to the wheel ( 1 ) via a twin control arm ( 9 ,  9 ′) of a control arm unit, wherein the twin control arms ( 9 ,  9 ′) in a central or normal position of the camber actuator ( 7 ) run symmetric to a central radial plane (R M ). 
     
     
         10 . The rail vehicle according to  claim 1 , wherein the vertical steering axis (V) extends or runs in the central radial plane (M R ) of the wheel ( 1 ).