FIELD: mining industry; applicable in underground mining of coal deposits. SUBSTANCE: plow plant includes face conveyor flight with guides secured to conveyor, plows installed on guides and interconnected by connecting members, and mechanism for moving the plows in the form of hydraulic cylinders located longitudinally with respect to face conveyor flight and forming a system of kinematic action and hydraulic supply of hydraulic cylinders. Hydraulic cylinders of mechanisms moving the plows are located from face side of conveyor flight, thus forming the kinematic system with parallel force action and parallel hydraulic feed of groups of hydraulic cylinders. Plows are made single-cutter with movable cutter holders and mechanisms of their cyclic movement according to seam thickness, spacing between lines of cutting and seam hypsometry. Connecting members of plows are made in the form of plowshare of conveyor and provided with additional side loaders of two-sided action. Mechanism of cyclic movement of cutter holders have jacks and hydraulic units including controlled proportioners and valves engageable with profiled rockers installed on movable part of plow for correction of plant location depending on thickness and hypsometry of seam. Hydraulic cylinders in groups are made in the form of plungers series-connected with location inside hollow plunger of flexible pipeline ensuring compensation of angular displacement in jack hinges without application of hydraulic seals of movable type. EFFECT: higher efficiency, stable conveyor flight and guides in cutting of hard coals and large chips, extraction of coal along longwall face with variable thickness and hypsometry of seam, and easier coal loading along the entire length of conveyor. 4 dwg
