| 摘要 |
An apparatus for operating a water gate has a door of the water gate provided in a water channel, and has a mechanism for vertically operating the door. A pressure receiving plate is fixed to the door via an operating rod, and upper and lower air bags are provided on the upper and lower sides of the pressure receiving plate. An air compressor sends air into each of the upper and lower air bags, and a change-over valve and a flow rate regulating valve between the upper and lower air bags and the air compressor are adapted to switch and regulate the air sent into the upper and lower air bags. With this arrangement, compressed air is sent into the air bags to move the pressure receiving plate, vertically move the door and open and close the door. This apparatus is, moreover, adapted to drive the operating rod using the pressure of the air sent into the air bags, so that it has become possible to simplify the structure greatly.
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