EXTRACTION MACHINE Russian patent published in 1995 - IPC

FIELD: mining industry. SUBSTANCE: extraction machine has a base in the form of a conveyer, a housing in the form of two vertical portals, a taken out feed drive with a hauling chain, disk actuators with autonomous mechanism of rotation and squeezing out wedges. The ends of the hauling chain of the feed drive are fixed on the housing. The mechanism of rotating the disk actuators is set on one of the base ends and is made with a closed-type chain mounted for the movement of its leading branch counter to that of the feed drive chain and for the coverage of the driving stars rigidly connected with the disk actuators and placed on the housing and independently mounted deflecting ones. The portals are hard mounted on the slabs leaning on the soil, interacting with the conveyer bottom and hinged between themselves. The portals have bearing units for the deflecting stars and for the disk actuators mounted in the upper part of each portal opening, and built-in loading plowshares. The squeezing out wedge is set concentrically to the hub of each disk actuator on the housing side and is made in the form of a cut ring with separated edges. Between them a cam with a cutter is mounted at an angle to the disk plane. EFFECT: improved powering of the subsurface coal extraction. 6 dwg