Railway vehicle brake rod linkage adjuster return mechanism - has two axially serrated rotary couplings held under connector brake force loading

摘要

On railway rolling-stock the brake rod linkage has two telescopic connection pieces, a forcibly rotatable sheathing piece. There is a spring - spring-loaded coupling to a non-self-locking adjusting screw assembly. One rotary coupling (10, 11) is mounted unit loading in the closing direction inside the second rotary coupling between the screwing unit (8) and a sheathing piece (12), influenced by the brake force loading of the rod-linkage connection piece (3). Both couplings are axially serrated, with the second one's teeth at least as high as those of the first. With both couplings closed, the connection piece is supported against the closing-spring-loaded screwing unit, by a stop (a), in the couplings' opening direction. The return setting device can be used for single-nut adjusters, permitting single return by turning the sheathing piece, but reliably preventing unintentional changes in setting.