A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
DEVICE FOR OPENING/CLOSING SLUICE GATE
To provide a device for opening/closing a sluice gate, in a type having a movable sprocket, in which there is no need to provide a mechanism detecting presence/absence of abnormality in lifting/lowering a door body at a position apart in a horizontal direction from a position immediately above a movable sprocket and which can adopt the mechanism even in a type where one end of a chain is directly connected to the door body.SOLUTION: A device for opening/closing a sluice gate comprises: a sprocket 14 rotationally driving and lifting/lowering a door body 13 hung on a chain 12; a slide shaft 28 capable of moving in an axial center direction and to which a force F with a magnitude according to a magnitude of a load generated in the sprocket 14 applies in the axial center direction; determination means 41 determining presence/absence of abnormality on the basis of detection of position detection means 29 detecting a position of the slide shaft 28; first and second elastic bodies 35, 36 respectively making an elastic force in a direction opposite to the force F apply to the slide shaft 28; and extension/contraction restriction means 38 preventing extension/contraction of the first elastic body 35 from exceeding a specified quantity. The first elastic body 35 has a smaller Young's modulus than that of the second elastic body 36.SELECTED DRAWING: Figure 3
【課題】可動式スプロケットを有するタイプにおいて、扉体の昇降時の異常の有無を検出する機構を、可動式スプロケットの直上から水平方向に離れた位置に設ける必要がなく、チェーンの一端が直接扉体に接続されているタイプにおいても当該機構を採用可能な水門開閉装置を提供する。【解決手段】回転駆動し、チェーン１２に吊られた扉体１３を昇降させるスプロケット１４と、軸心方向に移動可能で、スプロケット１４に生じている負荷の大きさに応じた大きさの力Ｆが軸心方向に作用するスライド軸２８と、スライド軸２８の位置を検出する位置検出手段２９の検出に基づいて異常の有無を判定する判定手段４１と、スライド軸２８に、力Ｆと反対方向の弾性力をそれぞれ作用させる第１、第２の弾性体３５、３６と、第１の弾性体３５の圧縮あるいは伸張が所定量を超えるのを防ぐ伸縮制限手段３８とを備え、第１の弾性体３５は第２の弾性体３６よりヤング率が小さい。【選択図】図３
DEVICE FOR OPENING/CLOSING SLUICE GATE
To provide a device for opening/closing a sluice gate, in a type having a movable sprocket, in which there is no need to provide a mechanism detecting presence/absence of abnormality in lifting/lowering a door body at a position apart in a horizontal direction from a position immediately above a movable sprocket and which can adopt the mechanism even in a type where one end of a chain is directly connected to the door body.SOLUTION: A device for opening/closing a sluice gate comprises: a sprocket 14 rotationally driving and lifting/lowering a door body 13 hung on a chain 12; a slide shaft 28 capable of moving in an axial center direction and to which a force F with a magnitude according to a magnitude of a load generated in the sprocket 14 applies in the axial center direction; determination means 41 determining presence/absence of abnormality on the basis of detection of position detection means 29 detecting a position of the slide shaft 28; first and second elastic bodies 35, 36 respectively making an elastic force in a direction opposite to the force F apply to the slide shaft 28; and extension/contraction restriction means 38 preventing extension/contraction of the first elastic body 35 from exceeding a specified quantity. The first elastic body 35 has a smaller Young's modulus than that of the second elastic body 36.SELECTED DRAWING: Figure 3
【課題】可動式スプロケットを有するタイプにおいて、扉体の昇降時の異常の有無を検出する機構を、可動式スプロケットの直上から水平方向に離れた位置に設ける必要がなく、チェーンの一端が直接扉体に接続されているタイプにおいても当該機構を採用可能な水門開閉装置を提供する。【解決手段】回転駆動し、チェーン１２に吊られた扉体１３を昇降させるスプロケット１４と、軸心方向に移動可能で、スプロケット１４に生じている負荷の大きさに応じた大きさの力Ｆが軸心方向に作用するスライド軸２８と、スライド軸２８の位置を検出する位置検出手段２９の検出に基づいて異常の有無を判定する判定手段４１と、スライド軸２８に、力Ｆと反対方向の弾性力をそれぞれ作用させる第１、第２の弾性体３５、３６と、第１の弾性体３５の圧縮あるいは伸張が所定量を超えるのを防ぐ伸縮制限手段３８とを備え、第１の弾性体３５は第２の弾性体３６よりヤング率が小さい。【選択図】図３
DEVICE FOR OPENING/CLOSING SLUICE GATE
水門開閉装置
YOKOYAMA NARIAKI (author) / KITAJIMA CHIKARA (author)
2019-04-25
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau