| 摘要 |
PROBLEM TO BE SOLVED: To enable complete watertight state without the use of a material having a large wall thickness or a material having a large bending strength to reduce the manufacturing cost by forming a sluice gate door to be bent, and providing an energizing means for pressing the sluice gate door to a receiving plate. SOLUTION: This sluice gate includes a receiving plate provided with an opening 13 and a sluice gate door 31 for opening and closing the opening 13, wherein the sluice gate door 31 is moved up and down to control a flowing water amount. In the sluice gate, the vertical section of the sluice gate door 31 is formed to be bent like a V-shape to separate the central horizontal part of the sluice gate door 31 from the receiving plate, and an energizing means is provided of pressing the sluice gate door 31 to the receiving plate. As the energizing means, wedge-like members 32, 33 are provided between a guide 17a for guiding the sluice gate door 31 vertically and a set of both end parts of the central horizontal part of the sluice gate door 31, wherein the sluice gate door 31 is lowered to produce the energizing force. Thus, a complete watertight state can be realized without the use of a material having a large wall thickness of a material having a large bending strength in the sluice gate door 31 so as to reduce manufacturing cost.
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