| 摘要 |
The invention relates to a drilling device with a rotational and linear drive comprising a plurality of rods made of tubular sections (3, 30), which are rotationally fixed to each other in both directions by means of plug-in connectors, wherein a tension rod extends inside said plurality of rods (4, 36, 37) and is used to tense the tubular sections against each other. The tension rod can consist of tubular sections or a traction cable, enabling all of the rods to be displaced counter to the direction of drilling. |
