| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the processing flexibility of electrical wire pipe cutting portion. SOLUTION: An electrical wire pipe inserting port 11 is formed at the wall of a compact cable box (CCBox) branching portion and this inserting port 11 has the size allowing insertion of an electrical wire pipe P of the maximum diameter to be assumed. An adjusting cylinder 14 is screwed into the inserting port 11, this adjusting cylinder 14 has the inner diameter corresponding to the diameter of the electrical wire pipe P to be inserted and the electrical wire pipe P is inserted and fixed. Various electrical wire pipes of different diameters can be used through replacement of the adjusting cylinder 14 and placement of mortar is no longer required. Thereby, working efficiency can be improved. Installation of CCBox is often conducted by burying such box under the existing road. Therefore, improvement of working efficiency is effective for reduction of construction period.</p> |
