AUTOMATIC SCANNING DEVICE FOR ULTRASONIC INSPECTION OF ARTICLE WELDED JOINTS Russian patent published in 1994 - IPC

FIELD: measurement technology, nondestructive materials testing. SUBSTANCE: acoustic units 20 are mounted on flexible bands 24 held by clamps 21 fastened to bar 19, and are connected through self-adjusting rests to beam 16. Beam 16 is connected through closing joints 15 to rests 10 and 13 which in their turn are connected through vertical joints 9 and 12 to rockers 8. Rockers 8 are coupled to yoke 2 of wheels 1 connected through reducers 4 to electric motors 3. Bar 19 carries on spring 34 at the ends of which are attached weld tracking sensors 35 provided with limit switches 37. On vertical joints 9 and 12 are mounted turn angle pickups 38 which are electrically connected as also are tracking pickups 35, to control unit 42 connected with electric motors 3. In rocker 8 of rear wheels 1, placed under vertical joint 12 is horizontal joint 11. EFFECT: increased inspection accuracy due to more precise location of acoustic units relative to weld. 2 cl, 5 dwg