| 摘要 |
PROBLEM TO BE SOLVED: To achieve the miniaturization and wt. reduction of an ultrasonic flaw detection apparatus and the enhancement of the efficiency of flaw detection work. SOLUTION: An air cylinder 7 and a link mechanism 8 are together used in an ultrasonic probe pressing mechanism 6, and the parallel movement of the air cylinder 7 to a flaw detection arm 4 is converted to the movement of an ultrasonic probe 5 in the direction vertical to the flaw detection arm 4, in other words, the parallel movement thereof to a guide rail, and flaw detection is performed so as to follow the change of the curved surface of an elbow, and the error of the linear distance between the ultrasonic probe 5 and the guide rail is eliminated. The press mechanism such as the cylinder 7 can be arranged in a piping axis direction and the height of this apparatus can be reduced. Further, an ultrasonic wave incident direction can be changed by 180 deg. from an offset state without detaching the ultrasonic probe 5 by the rotary function provided to the ultrasonic probe pressing mechanism, and arm length can be shortened. |
