| 摘要 |
PURPOSE:To measure the bending state of a conduit line in the right and left directions, by moving a measuring part by the traction with a running body, supporting the measuring part with a supporting part so that the measuring part can be turned around a shaft, and detecting the turning of a rod. CONSTITUTION:A running body 21, which is inserted in a buried underground conduit line, is advanced forward with an image from a TV camera 25 being monitored with a TV monitor 26. Then, a measuring part 22 is tracted through a rod 50 and moved so that the moving direction is aligned with the axis of the conduit line 1. The bending angles of the conduit line 1 in the right and left directions are detected with a differential transformer according to the turning of the rod 50. The slant angles are measured with an inclinometer. The rolling states are measured with a rolling meter. The measured data are inputted into a control part 27, an operating part 24 and a recording part 28 through a cable 30. |
