VISUAL INSPECTION AND THICKNESS INSPECTION DEVICE FOR CONFINED SECTION

PURPOSE: To numerically reproduce a confined section (inspection object) in a pipeline and accurately measure and inspect the confined section by driving a camera mounted on the tip end of a support member and a contact shoe along a three-dimensional direction, and showing the image of the moving direction and displacement thereof, together with a camera image. CONSTITUTION: A camera support member 14 with a CCD camera 13 fixed to a camera 20 is inserted in a nozzle stub 6 and laid toward an inspection object. Thereafter, a drive means 15 formed out of handles 23 and 26, a lever or the like is operated to move the camera 13 in three-dimensional directions. Also, the moving direction and displacement of the camera 13 are read by encoders laid on the end of a shaft 21 and a bevel gear 31, and sent to an arithmetic operation device 17. The position of the camera 13 is thereby measured and displayed on a monitor TV 18 in the form of an image, together with a photographed image. Furthermore, the camera 13 is mounted on the shaft 21 and a contact shoe telescopic jig is fitted to the fixed seat 20 of the shaft 21. Then, the contact shoe is through into contact with the inner wall of a pipe for measuring the thickness of a confined section, and the result of the measurement is displayed on the TV 18 in the form of an image, together with an image picked up with the camera 13.