| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pile driver capable of protecting a leader extensible cylinder from vibration or the like while preventing a large impact from being directly imposed on the leader extensible cylinder even when an upper leader or lower leader in a folded and bent state is vibrated.SOLUTION: A leader 16 is dividedly formed of an upper leader 16a and a lower leader 16b via a hinge part 17 provided at a leader rear side, and a pile driver is equipped with a leader extensible cylinder 25 allowing the leader to rise and fall to a working state in which the leader is disposed upright and a transportation state in which the upper leader is turned down above a base machine. A leader fixing member 31 for fixedly connecting the upper leader turned down to a transportation position to the lower leader is detachably provided between an upper part of the lower leader and a lower part of the upper leader. The leader fixing member is connected to a lower connection member 30 of which lower end is detachably attached to an upper end of the lower leader, and is detachably connected to an upper connection member (cylinder upper connection member 27) of which upper end is fastened to a lower end of the upper leader.</p> |
