WORKING MEMBER OF MINING EXTRACTING MACHINE Russian patent published in 1996 - IPC

FIELD: rock breaking by percussion-cutting method in mining. SUBSTANCE: working member of mining extracting machine represents cutting warm-conveyor with central output shaft related to drive through toothed wheels. The warm-conveyor is provided with two-beam flat cutting bars including drive sprocket placed inside drum shell of the warm-conveyor secured to the additional central shaft, and a pair of by-pass members of the drum in the form of passive sprocket or rolls fastened between warm-conveyor spirals outside the drum shell on axles being parallel to warm-conveyor axle. Besides there are closed loops of cutting chains covering drive sprockets and pairs of by-pass members in the plane of each bar, and coming outside the drum to the rolls through openings in the shell. Additional central shaft with drive sprockets of the bars is kinematically connected to the additional controllable drive. EFFECT: high efficiency. 2 dwg