Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Double-pipeline drill bit for cast-in-place stiffening core composite pile
The invention relates to a double-pipeline drill bit for a cast-in-place stiffening core composite pile. The double-pipeline drill bit comprises an opening/closing blade, a core pile molding protective drum, a cutting blade and a hollow drill pipe, wherein the opening/closing blade is hinged to the bottom end of the hollow drill pipe, and is controlled to be opened or closed through a magnet; the core pile molding protective drum is arranged at the bottom of the hollow drill pipe, and is slidingly connected with the hollow drill pipe through a dowel pin; a cutting blade cutting soil body is arranged at the outer side of the core pile molding protective drum, and provides acting force for vertical sliding of the protective drum; the cutting blade is arranged outside the hollow drill pipe; double pipelines are arranged in the hollow drill pipe; a cement slurry nozzle is arranged at the bottom of the hollow drill pipe; the lower end of a cement slurry pipeline is communicated with the cement slurry nozzle, and the upper end is externally connected with a pumping device for injecting cement slurry; and the lower end of a hollow part of the hollow drill pipe is communicated with the opening/closing blade, and the upper end is connected with the pumping device for filling concrete. The drill bit can be applied to a conventional cement mixing pile machine to omit the pile machine customization cost, realizes once molding of the cast-in-place stiffening core composite pile to simplify the pile forming process, and guarantees the coaxiality of a peripheral pile and a core pile to achieve reliable pile forming quality.
Double-pipeline drill bit for cast-in-place stiffening core composite pile
The invention relates to a double-pipeline drill bit for a cast-in-place stiffening core composite pile. The double-pipeline drill bit comprises an opening/closing blade, a core pile molding protective drum, a cutting blade and a hollow drill pipe, wherein the opening/closing blade is hinged to the bottom end of the hollow drill pipe, and is controlled to be opened or closed through a magnet; the core pile molding protective drum is arranged at the bottom of the hollow drill pipe, and is slidingly connected with the hollow drill pipe through a dowel pin; a cutting blade cutting soil body is arranged at the outer side of the core pile molding protective drum, and provides acting force for vertical sliding of the protective drum; the cutting blade is arranged outside the hollow drill pipe; double pipelines are arranged in the hollow drill pipe; a cement slurry nozzle is arranged at the bottom of the hollow drill pipe; the lower end of a cement slurry pipeline is communicated with the cement slurry nozzle, and the upper end is externally connected with a pumping device for injecting cement slurry; and the lower end of a hollow part of the hollow drill pipe is communicated with the opening/closing blade, and the upper end is connected with the pumping device for filling concrete. The drill bit can be applied to a conventional cement mixing pile machine to omit the pile machine customization cost, realizes once molding of the cast-in-place stiffening core composite pile to simplify the pile forming process, and guarantees the coaxiality of a peripheral pile and a core pile to achieve reliable pile forming quality.
Double-pipeline drill bit for cast-in-place stiffening core composite pile
FU ZHIBIN (Autor:in) / LI YAOGANG (Autor:in) / WU WEI (Autor:in) / CAO SUYU (Autor:in) / CHEN JIEQIN (Autor:in) / GONG LEI (Autor:in) / YUAN CHANGSHENG (Autor:in) / YANG XIAOJUAN (Autor:in) / WANG WENZHE (Autor:in) / SHAO ZHONG (Autor:in)
18.11.2015
Patent
Elektronische Ressource
Englisch
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