INNER FACE CLEANING DEVICE FOR EXISTING PIPE

摘要

PROBLEM TO BE SOLVED: To achieve smooth movement of an inner face cleaning device even there is a concavity or a step on an inner face of a pipe.SOLUTION: The inner face cleaning device 1 comprises:a device core body 2 including coupling parts 6,7 for coupling a traction member;and cleaning tools 3 attached to the device core body 2 radially and extended toward an inner face of a pipe.The cleaning tools 3 have a claw part 30 for removing an attachment on the inner face of the pipe by contacting to the inner face of the pipe at a tip end and have a catch prevention part 9 for preventing catch to a concavity or to a step on the inner face of the pipe at a base end side other than the tip end of the claw part 30.