LOUGH APPARATUS Russian patent published in 1995 - IPC

FIELD: mining, oil industry. SUBSTANCE: plough apparatus has plough, driving in conveyer, hydraulic cylinders of motion, pressure pipeline and discharge pipeline, individual hydraulic poles and limit switches. Hydraulic cylinders are hinged correspondingly to frame of conveyer and corresponding stopping tool. Each limit switch is made in the form of telescopic rule and controlled valve block. Frame of conveyer has catches to move individual hydraulic poles. Each individual hydraulic pole is mounted in corresponding catch with its following release from catch during pole's mounting between roof and ground. Operational cavity of each individual hydraulic pole is hydraulically connected through valve block of corresponding limit switch with pressure and discharge hydraulic main pipelines. EFFECT: increased productivity.