| 摘要 |
A friction member for use in the bolster pocket of a stabilized railroad car truck having a bolster positioned within a side frame window has a slanted friction surface adapted to bear against a slanted wear surface within the bolster pocket and a vertical friction surface adapted to bear against a side frame wear surface. The slanted friction surface has a profile in a generally horizontal plane consisting of a central flat portion and adjoining outside arcuate portions. The flat portion has a width equal to twice the distance between the side frame center line and the point of rotation of the side frame relative to the bolster, with said point of rotation being selected such that, during side frame rotation, the distance from the side frame center line to the point of intersection of the plane of the vertical friction surface and the plane of the side frame wear surface is no greater than one half of said friction member horizontal thickness. |
