Friction wedge assembly for a railway truck, with a replaceable backing plate supporting the liner

摘要

A friction wedge assembly (10) for use in a suspension system of railroad car trucks. The friction wedge assembly comprises a cast metal wedge (1) having a bottom face (2), a vertical face (4) that is substantially perpendicular to the bottom face (2) and a sloped face (6) for contacting a mating surface on a bolster of such railroad car truck. There is a metal backing plate (8) that has a first side removably engageable with the vertical face of the cast metal wedge (1), a means (20) for securing the metal backing plate (8) to the cast metal wedge (1) and a composition liner (12) disposed on a second side of the metal backing plate (8) for engaging such metal wear liner on such side frame of such railroad car truck. <IMAGE>