| 摘要 |
<p>PROBLEM TO BE SOLVED: To lay wiring and piping materials on a laying line stretching over a long distance easily and with a good workability. SOLUTION: By producing a pressure difference of air A inside a hollow cylindrical shooter 3 arranged continuously along a wiring/piping material laying route, a sending-out substance 11 to which a long rope 12 has been connected is sent into the shooter 3, and the long rope 12 is laid in the shooter 3. Then, the long rope 12 is pulled back and wiring/piping materials are laid along the laying route directly or through a pulling-in rope for pulling wiring/piping materials in.</p> |
