PROBLEM TO BE SOLVED: To provide a sealed grab bucket capable of preventing flowing-out/diffusion of sediment when the grab bucket rises and reducing excess water during loading of the sediment to a barge or the like.SOLUTION: A sealed grab bucket 1 is provided with: a flap member 16 that is rotatably supported in each of shells 6, 6 via a rotary support shaft 15; drain holes 17, 17 that are opened at prescribed height positions on a top surface or an external surface; and upper limit restriction stoppers 18, 18 that restrict the rotation radial tip side of the flap member 16 from rotating to positions higher than the drain holes 17, 17. As the grab is sealed, pollution during drilling or rising is prevented, and an excess water amount captured in the grab is reduced by the flap member 16.SELECTED DRAWING: Figure 1
【課題】グラブバケット上昇時の土砂の流出・拡散を防止し、且つ、土運船等へ土砂を積み込む時の余水を低減することができる密閉型グラブバケットの提供。【解決手段】密閉型グラブバケット1は、各シェル6,6に、その内部に回動支軸15を介して回動自在に支持されたフラップ部材16と、上面又は外側面の所定の高さ位置に開口した水抜き孔17,17と、フラップ部材16の回動半径方向先端側が水抜き孔17,17よりも高い位置まで回動することを規制する上限規制用ストッパー18,18とを備え、グラブを密閉型とすることで掘削時や上昇時における汚濁を抑止し、且つ、フラップ部材16によってグラブ内に取り込まれる余水量を低減する。【選択図】図1
SEALED GRAB BUCKET
密閉型グラブバケット
2018-08-02
Patent
Electronic Resource
Japanese