| 摘要 |
<p>An improvement is provided in a railway vehicle. The vehicle has a body provided with a body bolster and a body center plate, a truck provided with a truck bolster and a bolster bowl defined by a truck center plate having an upstanding peripheral flange, the body center plate being received within the flange and being supported by the truck center plate, and a wear-resistant liner disposed between the center plates, the liner being defined by polymeric material and having a top surface which engages the truck center plate, and a liner reinforcement embedded in the polymeric material which serves as a matrix therefor. The reinforcement is constructed to serve the additional purpose of electrically conductive means and define dual-purpose means having a top surface portion which comprises the top surface and a bottom surface portion which comprises the bottom surface, the dual-purpose means providing reinforcement for the liner and a comparatively low electrical resistance path through the liner with each surface portion in contact with an associated center plate, the top and bottom surface portions each comprising a small fractional part of its associated planar surface.</p> |
