Pile foundation hole forming device and construction method: Fid-Bau Portal

Pile foundation hole forming device and construction method

LYU HAIQING / FU GAOZHONG / LIU LU / SONG YINGJUN / WEI XIN

The invention discloses a pile foundation hole forming device and a construction method, and relates to the technical field of pile foundation construction equipment and method.The pile foundation hole forming device comprises a drill rod and a supporting and positioning assembly used for stably supporting the drill rod on the earth surface near a drill hole, and a columnar cavity is formed in the drill rod; a plurality of through holes communicated with the columnar cavity are formed in the outer surface of the drill rod, metal scrapers are arranged in the through holes of the drill rod, mounting bases are arranged at the bottoms of the metal scrapers and connected with the inner walls of the through holes of the drill rod through rotating shafts, and electric telescopic rods are arranged in the columnar cavity of the drill rod. The output end of the electric telescopic rod is connected with a linkage piece, and the multiple metal scrapers are driven by the electric telescopic rod and under the action of the linkage piece to rotate at the same time. The drill bit has the effect of scraping off soil and chippings on the hole wall in the drilling process, so that the cleanliness of a drilled hole is guaranteed, and the drilling efficiency is greatly improved.

本发明公开了一种桩基成孔装置及施工方法，涉及桩基施工设备及方法的技术领域，其中桩基成孔装置，包括钻杆和用于将钻杆稳定支撑在钻孔附近地表上的支撑定位组件，钻杆的内部设有柱状空腔，钻杆的外表面设置有若干个与柱状空腔相互连通的透孔，钻杆的透孔内设有金属刮刀，金属刮刀的底部设有安装基座，安装基座与钻杆透孔的内壁之间通过转轴连接，钻杆的柱状空腔内设置有电动伸缩杆，电动伸缩杆的输出端连接有连动件，通过电动伸缩杆的驱动，并在连动件的作用下，使得若干个金属刮刀同时转动。本发明具有在钻进过程中刮除孔壁的泥土和碎屑的作用，从而在保证钻孔的清洁度，大大提高了钻孔效率。

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