| 摘要 |
<p>PURPOSE:To make a cable and a communicatory rope present in a pipe conduit simultaneously by pulling out a flexible pipe after the communicatory rope inserted into the flexible pipe is led in at the same time the cable is led into the pipe conduit. CONSTITUTION:An electric cable 6 pulled out of drums 4 and 5 and a flexible pipe 7 into which a communicatory rope 11 is inserted are led into a pipe 1 simultaneously by reeling them with a winch 9 through a communicatory rope 10 connected to a pulling eye 8. The flexible pipe 7 and the cable 6 are laid in parallel without being twisted together. Under this condition, if only the flexible pipe 7 is pulled out of the pipe conduit 1, the electric cable 6 and the communicatory rope 11 will remain in parallel.</p> |
