| 摘要 |
FIELD: mining industry, particularly devices specially adapted for blasthole drilling during sinking and supporting mine tunnels. ^ SUBSTANCE: drilling rig comprises guiding grill mounting, spinner movably installed on drill mounting and extending in longitudinal direction thereof, spinner feeding device and release mechanism for uncoupling kinematical connection between rope and feeding device. Feeding device includes lead drum on which rope is wound. Lead drum end is connected with drill mounting body. Lead drum is made as a friction pulley. Release mechanism is operated rope tightening means and is installed on the drill mounting. ^ EFFECT: increased efficiency of blasthole drilling. ^ 1 dwg |
