| 摘要 |
PURPOSE:To surely and accurately perform positioning at the stage of radioscopy by providing a mechanism decelerating the movement along a top plate between an X-ray tube and an image intensifier and a means performing the deceleration switching according to the radioscopic operation. CONSTITUTION:In a driving circuit, current flows to a switch 1, motor 5, radioscopic switch 6, and a switch 3 for detecting the insertion of a pressing cone by depressing a switch 1, and the motor 5 is rotated in one direction. Thus, the image intensifier 13 and an X-ray tube 12 are moved in one longitudinal direction of the top plate 10. A switch 3 for detecting the insertion of the pressing cone detects the insertion of the pressing corn and is turned off. The motor 5 reduces the speed when the current flows at the side of a speed adjustment device 4 connected parallely. The motor 5 can reduce the speed by turning off by pressing the switch 6 in photographing the stomach. Thus, the movement of the image intensifier 13 and the X-ray tube 12 is decelerated according to the operation of the radioscopy. |
