CONTROL DEVICE OF ACTUATING MEMBER DRIVE OF FRONT-END COAL MINING EQUIPMENT Russian patent published in 2003 - IPC

FIELD: mining industry; applicable in system of automatic regulation and control of electric drive of actuating member of front-end coal mining equipment. SUBSTANCE: control device includes two asynchronous motors connected via reducing gears with driving sprockets of endless haulage chain provided with plow carriages for their motion over guide. Device has two frequency converters, two frequency regulators, load equalizing unit including summator, two comparators, the first and second switches, signal module separation unit and load equalizing controller. Device is also provided with load controller, load setting unit, control unit, initial setting signal unit, rams for moving of guide to face, hydraulic control valves controlling rams, electrohydraulic units including batch box, two on-off hydraulic control valves with four control electromagnets. EFFECT: increased productivity of front-end coal mining equipment. 1 dwg