| 摘要 |
An apparatus 30 for use in removing a tank 10 from the ground includes a drill bit 32 for drilling an annular void around the tank 10, the drill bit 32 including at least one 40 eye for aligning with an eye 24 in a tank 10 and for receiving a lifting bar therethrough. A plurality of eyes 40 at different axial positions along the drill bit 32 may be provided. The drill bit 32 may include a cylindrical wall 34 which may be a Bell Auger having teeth or milling picks at its end 38 and an Archimedes screw 36 welded to its outside. A coupling element 35 for a hydraulic rotating device may be provided. The lifting bar 42 may include a retaining clip comprising a latch 43 for locking the bar in position on the drill bit 32. A catch (45 fig. 6a) may hold the latch 43 in position. The tank may be an oil tank for electrical cables. |
