| 摘要 |
PROBLEM TO BE SOLVED: To provide a work tool introduction device in which motion of a guide part is not influenced by a fluid pipe and the work tool can be positively fed into a fluid pipe.SOLUTION: This invention relates to a work tool introduction device 4 for introducing a work tool 3a performing a prescribed work within a fluid pipe 1 from a branch part 2c branched from the fluid pipe 1 into the fluid pipe 1 under non-interrupted flow state. The work tool introduction device comprises a shaft member 8 that can be advanced or retracted from the branched part 2c into the fluid pipe 1, a guide part 62 movably arranged at the extremity end of the shaft member 8 to guide the work tool 3a toward a prescribed direction and an operating part 63 for moving the guide part 62 within the fluid pipe 1, at least a part of the operating part 63 protrudes toward the extremity end of the shaft member 8 rather than the guide part 62, the shaft member 8 is moved forward or retracted in the fluid pipe 1, the operating part 63 is made to be movable starting from pushing against the inner peripheral surface 1b of the fluid pipe 1 and then the guide part 62 can be faced in a prescribed direction. |
