REPAIR DEVICE FOR USE FROM INSIDE OF ATTACHING PIPE JOINT OF EXISTING MANHOLE OR THE LIKE AND STRUCTURE OF LARGE- BORE PIPE JOINT MAKING INCLINATION ANGLE OF CAST-IN-PLACE MANHOLE OR THE LIKE VARIABLE

摘要

PROBLEM TO BE SOLVED: To provide a new device and structure for a large-bore pipe joint enabling repair from the inside of an attaching pipe joint of an existing manhole or the like, while making the tilt angle of a cast-in-place manhole or the like variable.;SOLUTION: To repair a joint part between a side hole in an existing manhole, culvert, or main pipe and an attaching pipe, the overall periphery of the side hole part is cut in the internal space of the manhole or the like to form a cut side hole. A circular metallic flange having a boring part is fitted into the cut side hole and a metallic cylinder is fitted into the boring part of the flange. A flanged cylinder joint formed when the metallic flange and the metallic cylinder are welded and integrated together at their respective mid portions is fitted from inside, and a rubber ring is fitted over the inside of the metallic cylinder of the joint. An end of the attaching pipe is fitted into the rubber ring from the outside of the metallic cylinder and the rubber ring is pressed against the metallic cylinder and the attaching pipe by means of an enlarging ring and a fastening band. The cut side hole on the outside of the metallic cylinder is filled with an elastic joint filler and closed.;COPYRIGHT: (C)2002,JPO