| 摘要 |
PURPOSE:To obtain an inspecting apparatus of a piping which brings forth no positional slippage, by a method wherein a guide with an origin marker is provided in the vicinity of a surface to be inspected, while the position of an inspecting unit is detected by a distance sensor of an inspecting mechanism, and a slippage from the surface to be inspected is corrected, in a running-type inspecting apparatus not using a track for exclusive use. CONSTITUTION:In an inspecting apparatus having a moving mechanism 8 running in the circumferential direction on the surface of a piping or the like and a slide mechanism 4 making an inspecting unit slide in the axial direction, a guide which is provided at a position being in the vicinity of a part to be inspected and not interfering with the main frame 9 of the inspecting apparatus, an origin marker 12 provided on at least one place of this guide, and an inspecting part 1 which is made up of a distance sensor 5 detecting a distance between the guide provided for the main frame 9 of the inspecting apparatus and the main frame 9 of the inspecting apparatus and of an origin sensor 6 detecting the origin marker 12, are provided. Moreover, a storage circuit receiving signals from the distance sensor 5 and the origin sensor 12 and signals from the slide mechanism 4 and the moving mechanism 8 as inputs and storing them and a operation processing circuit calculating and correcting a positional slippage accompanying scanning of the inspecting unit over the part to be inspected which is set beforehand, are provided. |
