WORKING MEMBER OF MINING MACHINE Russian patent published in 1997 - IPC

FIELD: underground mineral mining. SUBSTANCE: working member includes swinging boom with two cutting drums installed on its end on both sides of boom. Each drum is kinematically connected with electric motor via enclosed reducing gear located in boom. Motor is enclosed in housing secured to boom behind cutting drum. Cutting drum has, on its end, facing boom side, rigidly connected half-shaft which is kinematically connected with reducing gear and installed in bearing support located in boss 8 on side of panel 9 of boom. From the opposite end, cutting drum has rigidly connected second half-shaft which carries on its end, auxiliary end cutting dick. The second half-shaft is installed in bearing support whose plate is located in gap between cutting drum and disk and attached to free end of bulky bracket with braces. Bases of bracket and braces are rigidly secured, respectively, to side boom panel and motor housing. Cutting drum from the end facing the boom, may be provided with internal gear ring which is connected with idle gear whose shaft is installed in bearing support located in respective socket on boss of boom side panel and kinematically connected with reducing gear. End faces of cutting drum and disk on its periphery, and cutting disk over its entire external end plane, may have cutting teeth deflected from end planes to the side from cutting drums and disk, and for their free passage, during rotation of drum side panel have curved grooves. Rigidly connected to free frontal parts of boom and bearing support plate of drum shaft with disk may be wedge-shaped breaker with side bevels. EFFECT: higher efficiency. 4 cl, 2 dwg