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ＱＨ－Ｉ型多用打捞器湖南有色地质勘查局２４６队钱书伟，黄进庚我们设计的ＱＨ－Ｉ型多用打捞器，适用于大口径桩孔打捞事故。其结构加附图所示，筒体上端对称焊２个提引环，可用钻杆，或钢丝绳下打捞器。简体直径大于桩孔直径，长度大于（事故）钻杆最大单根长度。限位...
QH-I-type multi-purpose salvage device Hunan Non-ferrous Geological Exploration 246 team Qian Shuwei, Huang Jin Geng We designed QH-I-type multi-purpose salvage device for large-diameter pile hole fishing accident. Its structure plus the figure shows, the upper cylinder symmetrical welding 2 mention ring, available drill pipe, or rope under the salvage. Simplified diameter greater than the diameter of the pile, the length is greater than (accident) the largest single length of the drill pipe. Limit ...