| 摘要 |
PURPOSE:To make easier the transportation of a driver for fabricated drain materials as well as to make the driver simpler by separating crane and by fixing a guide pipe for mandrel to a leader by ribs by welding. CONSTITUTION:A guide pipe 2 for mandrel is fixed to a leader 1 by a rib 4 by means of welding. The mandrel 3 is positioned erectedly by the guide pipe 2 and driven by penetration of a wire through a wire guide roller 10 by means of a mandrel pressing metal 5. The drain material 7 is directed into the leader 1 through a loer guide roller from the drain drum 9, passed by the upper part of the mandrel 3, lowered through the inside of the mandrel 3, penetrated into the ground bottom, and attached with anchor plates to complete the driving of the drain material. |
