| 摘要 |
<p>The device (10) has a rotary drive (14) rotatably driving drill rods (70), and a vibration drive (16) producing vibration at the drill rods. A connecting area (18) connects the drill rods with the device. The rotary drive is arranged between the connecting area and the vibration drive. A hollow shaft (22) is rotated by the rotary drive and is driven by the vibration drive (16) in a vibrating manner. The hollow shaft extends through the vibration drive and the rotary drive. The vibration drive is arranged behind the rotary drive, where the drives are detachably connected with each other.</p> |
