On the sending beam of the rotary rock machine the device which uses drill steel sentoraraiza which moves

摘要

This invention the rotary rock machine (2) the sending beam (1) on drill steel sentoraraiza which moves regards the device which (6) is used. It possesses the actuator where drill steel sentoraraiza (6) the drill rod (4) closes the open part for movement of for the sake of when digging, operates in the pressure fluid, the pressure fluid is supplied to the actuator when digging.