| 摘要 |
FIELD: mining.SUBSTANCE: rotary-feed system of drilling machine includes a carriage arranged on mast, rotary mechanism hinged to the carriage and fixture of rotary mechanism in operating position, which is made in the form of a split bushing the section plane of which lies on the bushing axis and is parallel to hinge axis, and shaft arranged inside the bushing with possibility of rotation. One of the bushing parts is attached to the carriage, and the other part is attached to the rotary mechanism, and shaft is provided with a slot on the bushing level with the cut depth that is not less than the bushing radius.EFFECT: improving reliability at simultaneous simplification of the design.7 dwg |
