| 摘要 |
PROBLEM TO BE SOLVED: To provide means for promptly and appropriately operating an opening/closing device of a sliding door, even when a power source has been lost or a control panel or electric equipment has functionally failed.SOLUTION: At normal times, an operation panel 29 is operated for driving a hydraulic pump 36 with an electric motor 35 and moving a door body 4 by a hydraulic motor 26a, thereby opening/closing an open passageway 3. At a time of disaster and other emergency situations, first and second stop valves 41 and 42 are closed and couplers at tips of first and second external oil channels 46 and 47 are respectively connected to couplers of first external connection ports 41a and 42a of the first and the second stop valves 41 and 42, when a power source 32, the control panel 29, or electric equipment is not functioning normally and a hydraulic unit 28 cannot be used. Then, an internal combustion engine 44 is started to drive an external hydraulic pump 45, and an external direction switching valve 49 is switched manually to a prescribed state for moving the door body 4, thereby opening/closing the opening passageway 3.SELECTED DRAWING: Figure 8 |
