| 摘要 |
Constant contact side bearing support of a rail car body on a multi-axle rail car truck is provided for controlling car rocking. A bearing receiver or cage (26) mounted on the truck bolster (9) in laterally offset relationship to the truck center plate bowl (22) supports wedge shaped bearing blocks (32) on inclined surfaces (27, 28) within the cage (26). A long travel coil spring (38) biases the bearing blocks (32) against the inclined surfaces (27, 28) of the cage (26), thereby maintaining a substantially constant normal bearing force on the car body throughout the wear life of the bearings. In an alternative embodiment, the cage (26) is mounted on the car body with the bearing surfaces (35) of the bearing blocks (32) engaging corresponding bearing surfaces on the bolster (9). Arrangements providing for ease of inspection and replacement of the bearing blocks are disclosed. |
