| 摘要 |
<p>PURPOSE: To smoothly attain a lining pipe insertion work into a tube by solving the problem that an induction part which is installed at the tip of the lining pipe or the part of pipe near the induction part often causes twisting at the time when the induction part reaches a bending section of tube using a conventional traction tool. CONSTITUTION: A freely detachable induction part 2 is installed at the tip of a lining pipe to be inserted while the lining pipe is being pushed from the back side into a pipe P having a bending part P1, a spherical body 3 is attached to the tip of the induction part 2 in the way the spherical body 3 can rotate freely and is prevented from being parted from the induction part 2, and moreover a string-like body 4 for traction is connected with a part of the spherical body 3.</p> |
