| 摘要 |
<p>The invention relates to a device for use in replacing particularly sewage piping by using a forced inserting method, the device comprising an impact member (3) provided with a drawing tip (2), and a reamer (12) breaking the pipe (1) to be replaced, the rear portion of the reamer comprising means for fastening the pipe (4) to be inserted, the supply hoses (5) for the driving medium of the impact member (3) being conducted through the pipe (4) to be inserted. To increase the possibilities of using forced inserting, the device according to the invention is characterized in that at least one other tip (7) is attached to the reamer (12) by means of an arm (6) projecting sideways from the reamer for laying another pipe (8).</p> |
