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DEVICE FOR FEEDING SAND INTO DRILLED HOLE AND SAND FEEDING METHOD
To reduce dust when feeding sand into a drilled hole 4 that is vertically formed in the ground.SOLUTION: A sand feeding device 10 is configured to include: a hopper 11 that has an inlet 11a at an upper section and an outlet 11b at a lower section; a tube 12 that is connected to the outlet 11b of the hopper 11 and inserted into the drilled hole 4; and a skirt section 13 that is attached on a circumferential surface of the tube 12 and whose diameter is expanded by airflow that rises in the drilled hole 4.SELECTED DRAWING: Figure 2
【課題】 地面に鉛直方向に形成された削孔４内に砂を投入する際に、粉塵の発生を抑制する。【解決手段】 砂投入装置１０は、上部に受入口１１ａを有し下部に排出口１１ｂを有するホッパー１１と、ホッパー１１の排出口１１ｂに接続されて削孔４内に挿入されるチューブ１２と、チューブ１２の外周面に取付けられて削孔４内を上昇する気流により拡径するスカート部１３と、を含んで構成される。【選択図】 図２
DEVICE FOR FEEDING SAND INTO DRILLED HOLE AND SAND FEEDING METHOD
To reduce dust when feeding sand into a drilled hole 4 that is vertically formed in the ground.SOLUTION: A sand feeding device 10 is configured to include: a hopper 11 that has an inlet 11a at an upper section and an outlet 11b at a lower section; a tube 12 that is connected to the outlet 11b of the hopper 11 and inserted into the drilled hole 4; and a skirt section 13 that is attached on a circumferential surface of the tube 12 and whose diameter is expanded by airflow that rises in the drilled hole 4.SELECTED DRAWING: Figure 2
【課題】 地面に鉛直方向に形成された削孔４内に砂を投入する際に、粉塵の発生を抑制する。【解決手段】 砂投入装置１０は、上部に受入口１１ａを有し下部に排出口１１ｂを有するホッパー１１と、ホッパー１１の排出口１１ｂに接続されて削孔４内に挿入されるチューブ１２と、チューブ１２の外周面に取付けられて削孔４内を上昇する気流により拡径するスカート部１３と、を含んで構成される。【選択図】 図２
DEVICE FOR FEEDING SAND INTO DRILLED HOLE AND SAND FEEDING METHOD
削孔内への砂投入装置及び砂投入方法
YASUNAGA MASAMICHI (author) / YAMAKAWA HIROTSUGU (author)
2020-12-03
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
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Gründungen
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