LINING JACK-PLATFORM ASSEMBLY ON THE WORKING MEMBER OF A SELECTIVE-ACTION ROADHEADER, AND ELEMENTS OF A METAL ARCHED LINING WHICH ARE IN THE FORM OF CANTILEVERS AND FORM THE CANTILEVER PORTION OF THE LINING, PROVIDING A CONTINUOUS LINING

摘要

The invention relates to mining machinery and can be used for equipping mining machines, particularly selective-action roadheaders. Essence of the invention: a lining jack-platform assembly is mounted on the working member of a roadheader comprising a boom with a cutting head mounted thereon, the lining jack mounted on the boom being characterized in that it is configured in the form of a carriage mounted on guides on the end of the main part of the boom, and a platform with a frame-like structure mounted on said carriage so as to be capable of rotating relative thereto. Also claimed are cantilever fastenings which fasten to the top beam of a frame-like arched lining and are formed by a portion of a special profile having a stiffening rib with a ledge(s) on top (any sufficiently strong profile can be used as the load-bearing elements of the cantilevers).