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 attachedcurrent collector (12) are mounted to the truck frame (20) through the use ofmounting adapters (22), links (30), and elastomeric bushings (28).Specifically, in the vicinity of the swing arm axle housings (18), thecollector beam (14) is secured to the mounting adapters (22) which, in turn,are suspended below the respective axle housings (18) by the links (30) andaccompanying elastomeric bushings (28). The torsional deflection of theelastomeric bushings (28) permit the links (30) to swing in the longitudinaldirection, thereby accommodating the relatively larger angular andlongitudinal axle housing motions created by a swing arm primary suspension.