Double-sleeve type full-rotation super-long pile construction tool

The utility model discloses a double-sleeve type full-rotation super-long pile construction tool which comprises an outer sleeve and an inner sleeve which is coaxially sleeved with the outer sleeve ina sliding mode, the length of the inner sleeve is larger than that of the outer sleeve, the outer sleeve and the inner sleeve are divided into a plurality of connecting sections in the axial direction, and the connecting sections are detachably connected. The outer sleeve bears the pressure and frictional resistance of the upper section, and the inner sleeve directly drills rock by utilizing theinner cavity of the outer sleeve; and the full-revolving drilling machine applies force and torsion to the outer sleeve and the inner sleeve in sequence for drilling or lifting, so that a deeper placecan be drilled conveniently. 本实用新型揭示了一种双套管式全回转超长桩施工工具，该工具包括外套管和可滑动地同轴套设于外套管内的内套管，内套管长度大于外套管，所述外套管和内套管沿轴向分成数段连接段，各连接段间为可拆卸连接。本实用新型的外套管承受上段压力和摩擦阻力，内套管利用外套管内腔直接钻岩；全回转钻机先后对外套管和内套管施加力和扭力钻进或提拔，便于钻进更深的地方。