A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CHUCKING MECHANISM OF PILE EXTRACTOR AND PILE EXTRACTION METHOD
PROBLEM TO BE SOLVED: To provide a chucking mechanism of a pile extractor allowing extraction of even a heavy existing pile.SOLUTION: A chucking mechanism of a pile extractor comprises: a cylindrical casing 3 provided with a concentric outer cylindrical part 1 near an end part; claws 2 supported on an outer peripheral wall of the outer cylindrical part; outer cylindrical part windows and casing windows respectively provided penetrating through the outer cylindrical part and the casing allowing standing of the claws inward from an inner peripheral wall of the casing; and a hydraulic cylinder for moving the outer cylindrical part along the casing. By extending the hydraulic cylinder, the outer cylindrical part moves in the casing end direction and the claws are tilted on the inner peripheral wall of the casing, and by compressing the hydraulic cylinder, the outer cylindrical part moves in the direction reverse to the casing end direction and the claws stand inward from the inner peripheral wall of the casing. At the standing time, the end parts of the claws in the casing end direction abut on the casing windows.SELECTED DRAWING: Figure 1
【課題】重い既設杭でも引抜き可能とする抗抜き機のチャッキング機構を提供する。【解決手段】先端近傍に外側円筒部１を同芯に設けた円筒状のケーシング３と、外側円筒部の外周壁に軸支された爪２と、爪がケーシングの内周壁より内部に起立可能に、外側円筒部及びケーシングにそれぞれ貫通して設けられた外側円筒部窓及びケーシング窓と、外側円筒部を前記ケーシングに沿って移動させる油圧シリンダと、油圧シリンダを伸長させることにより外側円筒部がケーシング先端方向に移動して爪がケーシングの内周壁に倒伏し、油圧シリンダを圧縮させることにより外側円筒部がケーシング先端方向と逆方向に移動して爪がケーシングの内周壁より内部に起立するとともに、起立時に爪におけるケーシング先端方向の端部がケーシング窓に当接することを特徴とする杭抜き機のチャッキング機構とした。【選択図】図１
CHUCKING MECHANISM OF PILE EXTRACTOR AND PILE EXTRACTION METHOD
PROBLEM TO BE SOLVED: To provide a chucking mechanism of a pile extractor allowing extraction of even a heavy existing pile.SOLUTION: A chucking mechanism of a pile extractor comprises: a cylindrical casing 3 provided with a concentric outer cylindrical part 1 near an end part; claws 2 supported on an outer peripheral wall of the outer cylindrical part; outer cylindrical part windows and casing windows respectively provided penetrating through the outer cylindrical part and the casing allowing standing of the claws inward from an inner peripheral wall of the casing; and a hydraulic cylinder for moving the outer cylindrical part along the casing. By extending the hydraulic cylinder, the outer cylindrical part moves in the casing end direction and the claws are tilted on the inner peripheral wall of the casing, and by compressing the hydraulic cylinder, the outer cylindrical part moves in the direction reverse to the casing end direction and the claws stand inward from the inner peripheral wall of the casing. At the standing time, the end parts of the claws in the casing end direction abut on the casing windows.SELECTED DRAWING: Figure 1
【課題】重い既設杭でも引抜き可能とする抗抜き機のチャッキング機構を提供する。【解決手段】先端近傍に外側円筒部１を同芯に設けた円筒状のケーシング３と、外側円筒部の外周壁に軸支された爪２と、爪がケーシングの内周壁より内部に起立可能に、外側円筒部及びケーシングにそれぞれ貫通して設けられた外側円筒部窓及びケーシング窓と、外側円筒部を前記ケーシングに沿って移動させる油圧シリンダと、油圧シリンダを伸長させることにより外側円筒部がケーシング先端方向に移動して爪がケーシングの内周壁に倒伏し、油圧シリンダを圧縮させることにより外側円筒部がケーシング先端方向と逆方向に移動して爪がケーシングの内周壁より内部に起立するとともに、起立時に爪におけるケーシング先端方向の端部がケーシング窓に当接することを特徴とする杭抜き機のチャッキング機構とした。【選択図】図１
CHUCKING MECHANISM OF PILE EXTRACTOR AND PILE EXTRACTION METHOD
杭抜き機のチャッキング機構、及び杭抜き工法
TOKUNAGA YONEJI (author) / TOKUNAGA TETSUYA (author)
2018-08-02
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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