| 摘要 |
The safe door of a large safe chamber used for depositing cash or secret papers, has a hydraulic cylinder for opening/closing the main door with a simplified-structure and silent operation. The door comprises an operating botton for closing a passage (60) by sliding the main door (20) on a rail groove (11); a draulic cylinder (80) for moving the main door; a ttery (90) mounted onat the control box (110) for supplying power to a hydraulic control device (100) of the cylinder (80), which operates the main door for a certain time of minutes on an electric failures; a stop switch (160) mounted at stationary wall (40), for stopping the main door when the passage (60) is completely opened or closed.
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