| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-pipe positioning device for a working carriage capable of being applied even to a small-diameter piping by which a working jig is easily transported to a working objective region by moving it inside the piping to perform a plurality of operations, even in a piping in which the working place is not accessible from the outside of the piping. SOLUTION: An in-pipe positioning device is made up of a working carriage 6 which is inserted into a pipe 1 and on which an inspection/working jig for carrying out the working such as welding and cutting of the pipe or for carrying out the inspection of the working region is mounted, a guide carriage 7 for passing through this working carriage and for positioning the working carriage to the working objective region of the piping, and a drawing wire mechanism for sending out or taking up wires in synchronization with the traveling of the guide carriage and while slidingly moving with the pulley at the rear end of the guide carriage. Further, a wire-fixing mechanism 10 for holding or releasing the drawing wire is provided in the inside of the working carriage, and a control unit by which the drawing wires 8, 9 are held by a wire fixing mechanism mounted on the working carriage and by which the working carriage 6 is moved to a working position by sending or taking up the drawing wire are provided to the guide carriage. |
