| 摘要 |
PURPOSE:To enable the smooth movement within a pipe by providing balloon bodies capable of inlet and exhaust of the air and a stretchable device capable of stretching/contracting the distance of the both balloon bodies in the front and the rear of a pipe moving device used for inspection and maintenance of various pipeline inner parts. CONSTITUTION:In a pipe moving device 2, a holding body 3 on the front side and a holding body 4 on the rear side are connected to each other by an air cylinder 5. The holding bodies 3, 4 are provided with balloons 3a, 4a protruded upper and lower of the body 2, respectively, which balloons are expanded and contracted by inlet and exhaust of the air. The air cylinder 5 is formed of a piston 5a and a cylinder body 5b, with the piston 5a being connected to the front holding body 3, and the cylinder body 5b to the rear holding body 4. Limit switches LS-1, LS-2 for detecting the forward and backward positions of the piston 5a are provided, and their outputs are inputted to an electric control board 12 through a cable 15. |
