Uses the canal orifice tube expander device are regenerated the canal orifice tube expander mannered null

摘要

PROBLEM TO BE SOLVED: To surely enlarge the diameter of a pipe port of a regeneration pipe regardless of structure of a manhole.;SOLUTION: This pipe port enlarging apparatus 1 includes: a fixed unit 2 having a plurality of grip bars 26 which can be displaced between an enlarged diameter position; and a pipe enlarging tool 3 freely removably mounted to the fixed unit 2 and having a diameter enlarging part 33a for enlarging the diameter of the pipe port of the regeneration pipe and a pipe enlarging mold 31 heated through a heater 35. The pipe enlarging mold 31 is mounted to the fixed unit 2 fixed through the grip bar 26 at the enlarged diameter position to the interior of the regeneration pipe, and the heated pipe enlarging mold 31 is pressed to the pipe port of the regeneration pipe to enlarge the pipe port r to a shape corresponding to the diameter enlarging part 33a.;COPYRIGHT: (C)2011,JPO&INPIT