| 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. |
