UNSPRUNG THIRD RAIL COLLECTOR BEAM SUPPORT FOR A SWING ARM PRIMARY SUSPENSION RAILWAY TRUCK

摘要

An electric railway truck (10) comprises an unsprung third rail collector beam (14) for a swing arm primary suspension. The collector beam (14) and attached current collector (12) are mounted to the truck frame (20) through the use of mounting adapters (22), links (30), and elastomeric bushings (28). Specifically, in the vicinity of the swing arm axle housings (18), the collector beam (14) is secured to the mounting adapters (22) which, in turn, are suspended below the respective axle housings (18) by the links (30) and accompanying elastomeric bushings (28). The torsional deflection of the elastomeric bushings (28) permit the links (30) to swing in the longitudinal direction, thereby accommodating the relatively larger angular and longitudinal axle housing motions created by a swing arm primary suspension.