| 摘要 |
PURPOSE:To bury a pipe without generating vibration and noise, by a method wherein an tip turning member, which has a spiral vane on an outer periphery and a conical shaped lower end, is coupled to a lower end of a pipe, and the tip turning member is spun through turning of a pipe. CONSTITUTION:In case a concrete pile is applied as a pipe 11, an tip turning member 13 and the pipe 11 are inserted in order into a pit excavated by an auger, and simultaneously, a hook projection 15 on the pipe mates a hook concavity 16 to connect together the tip turning member and the pipe. Then, if with a rotary driving device 18 actuated, the pipe 11 is spun through the medium of an attachment 17, the pipe and the tip turning member 13 are lowered into the earth through working of a spiral vane 14, and is buried in the earth. In case a steel pipe is applied as the pipe 11, it is buried in the earth and then is pulled off with a hydraulic motor 19 reversely turned, and simultaneously, concrete is deposited into the pipe. |
