Bogie assembly

Abstract

A bogie assembly includes a bolster having a plate on which a rail vehicle is supported, and side frames disposed on opposite sides of the plate of the bolster. The side frames can have pedestal jaw ends that can couple with wheelsets of the rail vehicle. The side frames can have openings sized to receive the bolster and springs between spring seats of the side frames in the openings and the bolster. The side frames also can include unit guide pockets that can receive brake beams that move during engagement or release of brake shoes from wheels in the wheelsets. The unit guide pockets can be located below the spring seats in the side frames.

1 . A bogie assembly, comprising:
 a bolster having a plate on which a rail vehicle is supported; and   side frames disposed on opposite sides of the plate of the bolster, the side frames having pedestal jaw ends configured to couple with wheelsets of the rail vehicle, the side frames having openings sized to receive the bolster and springs between spring seats of the side frames in the openings and the bolster, the side frames also include unit guide pockets configured to receive brake beams that move during engagement or release of brake shoes from wheels in the wheelsets, the unit guide pockets located below the spring seats in the side frames.   
     
     
         2 . The bogie assembly of  claim 1 , wherein the side frames include internal sides that face each other and opposite external sides that face away from each other, the internal sides including protruding ribs that outwardly extend from the internal sides. 
     
     
         3 . The bogie assembly of  claim 2 , wherein the external ribs of the side frames are located at turns of the spring seats. 
     
     
         4 . The bogie assembly of  claim 2 , wherein the unit guide pockets have elongated slots having S-shapes that start at the external ribs. 
     
     
         5 . The bogie assembly of  claim 4 , wherein the S-shapes of the unit guide pockets spread out mechanical stress imparted on the side frames by the rail vehicle. 
     
     
         6 . The bogie assembly of  claim 2 , wherein the external ribs protrude along first directions that are parallel to a center plane of the bogie assembly. 
     
     
         7 . The bogie assembly of  claim 6 , wherein the external ribs protrude along the first directions that also are perpendicular to second directions along which the bolster is elongated and extends between the side frames. 
     
     
         8 . The bogie assembly of  claim 2 , wherein the external ribs provide structural support to the side frames. 
     
     
         9 . The bogie assembly of  claim 1 , wherein ends of the unit guide pockets that face the unit guide pockets in a same side frame are filled with a solid material to reduce stress in the side frames from the rail vehicle. 
     
     
         10 . A bogie assembly, comprising:
 a side frame configured to be coupled with one end of a bolster that supports a vehicle, the side frame having pedestal jaw ends configured to couple with wheelsets of the vehicle, the side frame having openings sized to receive the bolster and springs between the bolster and spring seats of the side frames in the openings, the side frame including unit guide pockets configured to receive brake beams that move during engagement or release of brake shoes from wheels in the wheelsets, the unit guide pockets located below the spring seats in the side frames.   
     
     
         11 . The bogie assembly of  claim 10 , wherein the side frame includes an internal side and an opposite external side, the internal side including protruding ribs that outwardly extend from the internal side. 
     
     
         12 . The bogie assembly of  claim 11 , wherein the external ribs are located at turns of the spring seat. 
     
     
         13 . The bogie assembly of  claim 11 , wherein the unit guide pockets include elongated slots with S-shapes that start at the external ribs. 
     
     
         14 . The bogie assembly of  claim 13 , wherein the S-shapes of the unit guide pockets spread out mechanical stress imparted on the side frame by the vehicle. 
     
     
         15 . The bogie assembly of  claim 11 , wherein the external ribs protrude along first directions that are parallel to a center plane of the bogie assembly and that are perpendicular to second directions along which the bolster is elongated and extends between the side frames. 
     
     
         16 . The bogie assembly of  claim 10 , wherein ends of the unit guide pockets that face the unit guide pockets in the side frame are filled with a solid material to reduce stress in the side frame from the vehicle. 
     
     
         17 . A bogie assembly, comprising:
 a bolster configured to be coupled with a vehicle; and   side frames connected with each other by the bolster, the side frames including spring seats configured to support springs between the bolster and the side frames, the side frames also including unit guide pockets in which brake beams move during actuation of brakes, the unit guide pockets located below the spring seats.   
     
     
         18 . The bogie assembly of  claim 17 , wherein the side frames also include ribs that project from the side frames in directions that are perpendicular to the bolster, parallel to internal sides of the side frames that face each other, and parallel to external sides of the side frames that face away from each other. 
     
     
         19 . The bogie assembly of  claim 17 , wherein the unit guide pockets have S-shapes at ends of the unit guide pockets. 
     
     
         20 . The bogie assembly of  claim 17 , wherein the side frames include ribs that project from the side frames in directions that are perpendicular to the bolster, parallel to internal sides of the side frames that face each other, and parallel to external sides of the side frames that face away from each other, the unit guide pockets having S-shapes at ends of the unit guide pockets.