Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DRILLING BLADE, EXCAVATOR AND EXCAVATION METHOD
PROBLEM TO BE SOLVED: To provide a drilling blade that can suppress the attenuation of jet stream speed of an excavation fluid injected from an injection nozzle as much as possible.SOLUTION: A drilling blade 4 generates the displacement to a laterally opened open wing state with respect to an excavation rod 3 and rotation with the excavation rod 3 as the center, by a reaction force based on injection of an excavation fluid from injection nozzles 7 and 8, and is provided with an excavation fluid sliding surface 14 which makes an excavation fluid injected from the injection nozzles 7 and 8 slide to the injection direction. The excavation fluid sliding surface 14 is provided with a downward surface 15 positioned above the excavation fluid when the drilling blade 4 is in an open wing state, and a front face surface 16 positioned in the back of the excavation fluid in the rotation direction of the drilling blade 4, and the lower part of the downward surface 15 and the front part of the front face surface 16 in the rotation direction are opened.SELECTED DRAWING: Figure 6
【課題】噴射ノズルから噴射された掘削流体の噴流速度の減衰をできる限り抑制できる掘削翼を提供する。【解決手段】噴射ノズル７，８からの掘削流体の噴射に基づく反力によって、掘削ロッド３に対して横に開いた開翼状態への変位と前記掘削ロッド３を中心とする回転とを生ずる掘削翼４であって、前記噴射ノズル７，８から噴射される掘削流体を噴射方向へと滑走させる掘削流体滑走面１４を備え、該掘削流体滑走面１４は、前記掘削翼４の開翼状態において掘削流体の上方に位置する下向き面１５と、前記掘削翼４の回転方向における掘削流体の後方に位置する前向き面１６と、を備え、前記下向き面１５の下方と前記前向き面１６の回転方向の前方とが開放されている。【選択図】 図６
DRILLING BLADE, EXCAVATOR AND EXCAVATION METHOD
PROBLEM TO BE SOLVED: To provide a drilling blade that can suppress the attenuation of jet stream speed of an excavation fluid injected from an injection nozzle as much as possible.SOLUTION: A drilling blade 4 generates the displacement to a laterally opened open wing state with respect to an excavation rod 3 and rotation with the excavation rod 3 as the center, by a reaction force based on injection of an excavation fluid from injection nozzles 7 and 8, and is provided with an excavation fluid sliding surface 14 which makes an excavation fluid injected from the injection nozzles 7 and 8 slide to the injection direction. The excavation fluid sliding surface 14 is provided with a downward surface 15 positioned above the excavation fluid when the drilling blade 4 is in an open wing state, and a front face surface 16 positioned in the back of the excavation fluid in the rotation direction of the drilling blade 4, and the lower part of the downward surface 15 and the front part of the front face surface 16 in the rotation direction are opened.SELECTED DRAWING: Figure 6
【課題】噴射ノズルから噴射された掘削流体の噴流速度の減衰をできる限り抑制できる掘削翼を提供する。【解決手段】噴射ノズル７，８からの掘削流体の噴射に基づく反力によって、掘削ロッド３に対して横に開いた開翼状態への変位と前記掘削ロッド３を中心とする回転とを生ずる掘削翼４であって、前記噴射ノズル７，８から噴射される掘削流体を噴射方向へと滑走させる掘削流体滑走面１４を備え、該掘削流体滑走面１４は、前記掘削翼４の開翼状態において掘削流体の上方に位置する下向き面１５と、前記掘削翼４の回転方向における掘削流体の後方に位置する前向き面１６と、を備え、前記下向き面１５の下方と前記前向き面１６の回転方向の前方とが開放されている。【選択図】 図６
DRILLING BLADE, EXCAVATOR AND EXCAVATION METHOD
掘削翼、掘削装置及び掘削工法
NASU TAKEO (Autor:in)
15.02.2018
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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