| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a jig for insertion into a pipe with facilitates the insertion of an in-pipe working device, while ensuring sealing property between a cylindrical member and an outer surface part surrounding the peripheral edge of a through hole, and hardly makes the in-pipe working device break down. SOLUTION: This jig is so formed that a cylinder body 3 for guide to guide an insertion direction from the through hole 1 of an in-pipe working device C, situated in a work part D at the tip of a rigid long body C1, to the interior of a pipe B and a cylinder body 4 for fixing the cylinder body 3 for guide are interconnected with cylinder axes Y and Z brought into an oblique state, and the cylinder body 4 for fixing is situated on the outer peripheral side of a cylindrical member 20 provided with a male screw part 19 threadedly mounting on the peripheral edge of the through hole 1 in a state that a holding frame 22 for an elastic sealant 21 between the cylindrical member 20 and the peripheral edge of the through hole 1 is formed in a flange form. The portion 23, on the upper steam side in the pipe insertion direction of the working device C, of the cylinder body 3 for guide is connected to a holding frame 22, and a notch 24 to allow the entrance of the pipe working device C is formed on the upper stream side, in the pipe insertion direction of the working device C, of the cylinder body 4 for fixing and at a portion ranging from the cylindrical member 20 to the holding frame 22.</p> |
