Guide and drive arrangement for the winning machines of mineral winning installations

摘要

A mineral winning installation employs a shearer which is moved along a scraper-chain conveyor compound of individual pans mounted end-to-end. the shearer extends over the conveyor and is guided by guides provided at both sides of the conveyor. The body of the shearer has a driven chain wheel which meshes with an open-link chain serving as a rack abutment and laid on a bed alongside the side walls of the conveyor pans adjacent the mineral face. The side walls of the pans have upper and lower flanges which have strip-like projections directly outwardly from the pans. The chain is retained by the strip-like projections of the upper flanges of the pan side walls which overlap one side of the horizontal links and detachably hold-down strips which overlap the other side of the horizontal links. the hold-down strips are mounted for swivelling to release the chain links are detachably mounted to the support bars fixed to the support members.