FIELD: mining.
SUBSTANCE: device using the centraliser from drilling steel, which moves along run beam of drilling machine, and containing feed cylinder for movement of drilling machine in the drilling direction and backwards, at least one steering wheel rigidly installed relative to feed cylinder and elastic feed member moving around the wheel and connected to drilling machine and to run beam, centraliser from drilling steel installed with possibility of being moved on run beam and rigidly relative to feed cylinder in longitudinal direction of run beam and containing central hole for the drilling rod, feedthrough hole on the side of central hole for movement of drilling rod to central hole and from the latter, and device for closing the feedthrough hole during drilling process, and channels for fluid medium under pressure for supply of fluid medium under pressure to and from fluid medium chambers under pressure of feed cylinder. Centraliser contains actuator actuated with fluid medium under pressure for closing of feedthrough hole, channel for fluid medium under pressure is connected between feed cylinder chamber, to which fluid medium under pressure is supplied during drilling to move the drilling machine in the drilling direction, and actuator of centraliser so that pressure of fluid medium under pressure makes the actuator close the feedthrough hole.
EFFECT: automatic closing of centraliser hole.
14 cl, 4 dwg
