| 摘要 |
PURPOSE:To pass a probe on the internal surface of a small-diameter tube which has a curvature part and a different-diameter part and to align the probe through remote operation by coupling the probe with front and a rear alignment part rotatably by springs and aligning the alignment part by performing external positive/negative pressure switching. CONSTITUTION:A device consists of the alignment parts 17 and 27 which performs alignment by cylinders 11 and 21 driven by supplying external air pressure and the probe 31 coupled therewith rotatably by the springs 10 and 20. Then, the springs 10 and 20 move in the tube with a hydraulic flow while displacing the springs 10 and 20 according to the state of curvature, etc., of the tube. When positive air pressure is supplied to the tube 41 from outside so as to align the probe 31, the cylinders 11 and 21 of the alignment parts 17 and 27 operate at the same time to press alignment bars 15 and 25 against the internal surface of the tube. Further, when the probe is passed through a small-diameter part 8, the alignment parts 17 and 27 shrink and when alignment is performed by a large-diameter part 9 and inspection is performed, the alignment parts 17 and 27 are expanded to align the probe 31 are expanded to align the probe 31.
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