DUAL CORE DRILL

摘要

The present invention relates to a dual drilling machine and, more specifically, to a dual drilling machine capable of making two holes at the same time by using two core drills. To this end, the present invention comprises: a bracket assembly installed on a front end of an arm of an excavator; a first core drill unit making a hole on bedrock by rotating a core drill; a second core drill unit placed in a position facing the first core drill unit while staying away from the first core drill unit and being parallel to the first core drill unit, and making a hole on the bedrock by rotating another core drill; and a gap control unit formed between the first and second core drill units and the bracket assembly to connect the first and second core drill units with the bracket assembly, and controlling a gap between the first and second core drill units by making the first and second core drill units get closer to each other or further from each other.