摘要 |
PURPOSE: An automatic floodgate is provided to minimize human labor and to instantly and automatically act to prevent overflow of water by automatically opening/closing the floodgate along amount and/or velocity of water instead of manual operation by operator. CONSTITUTION: The floodgate comprises a wall body(4) of water reservoir; a pair of supporting rods(3) vertically secured in the wall body; and a plate type open/closing gate(2) pivotally mounted at top portion by a hinge(1). The open/closing gate(2) has a number of resistance panels(5) at equal intervals at bottom side thereof in order to allow water pressure of inflow water from upstream of river, water reservoir and/or farm water route to apply load to the gate and raise the gate. The opening/closing gate(2) is varied in its opening angle by the resistance panels(5).
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