| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce piping cost or the like by automatically laying piping corresponding to the pipeline shape, even if the location is a narrow, bent, or the like where a worker or the like cannot easily enter in a pipeline in tunnel structure. SOLUTION: This flexible pipe joint device consists of a protective pipe body 1 for accommodating and protecting each kind of cable C and a flexible connection means 10, where an insertion cylindrical part 15 for inserting the opening end part of the protective pipe body 1 is connected slidably to both the ends of a flexible bent cylindrical part 11 and a waterproof packing 20 adhering to the surrounding of the protective pipe body 1 is decorated inside the opening end of the insertion cylindrical part 15. In the bent cylindrical part 11, an external protective film 13 made of synthetic resin is formed on the outer surface of a spiral pipe material 12 which is made of metal by covering the inner surface with an inner protective film 14. The waterproof packing 20 is in a ring shape arranged at the insertion cylindrical part 15 and has an annular groove 21 on an outer-periphery surface, and has a plurality of waterstop lines 22 formed nearly in a mountain shape with a section for freely allowing the protective pipe body 1 capable of sliding on the inner-periphery surface.</p> |
