| 摘要 |
The present invention relates to a boring machine which comprises: a body; a leader that is supported by the body; a head unit that is moved along a lengthwise direction of the leader, and has a driving shaft coupled with a rod; a holding unit that is installed to slide on the leader along a lengthwise direction, and supports or holds the rod coupled with the head unit; and a moving unit that moves the holding unit by an elevating force of the head unit. According to the present invention, a boring machine enables a rod coupled with a head unit by a holding unit to be guided and positioned at the same axis as the head unit without shaking, thereby shortening operating time since a boring work of the rod and a connecting work of a new rod are easily performed. |
