| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase the distance of movement of the piping in a sheathing pipe, and provide a new moving tool in place of a truck by holding a synthetic resin arc-shaped body having a projected part outside by bolts in an annular manner, and forming a thin layer of the prescribed resin on the surface of the projection part in contact with the sleeve pipe. SOLUTION: Annular support tools are wound around a pipe with appropriate intervals to slide the pipe 1 in a sheathing pipe 2. The support tool for movement comprises three to five arc-shaped bodies 3 combined in an annular manner, and 9-15 projected parts 4 are sufficient on the whole. A part of or a whole of a thin layer 6 made of polytetrafluoroethylene on the surface of the projected part may be replaced by 1-3 wheels embedded in the projected parts 4. The synthetic resin product is preferably a formed body of the resin mainly consisting of dicyclo-pentadiene. Because the synthetic resin arc-shaped bodies are combined in an annular manner with bolts 7 and nuts 8, they can be easily fitted. The resin mainly consisting of dicyclo-pentadiene is inexpensive, and excellent in mechanical strength, etc.</p> |
