| 摘要 |
A pile driver assembly comprising a lead, a hammer supported for longitudinal movement along the lead, a helmet at the lower end of the lead configured to receive the end of a noncircular pile, a pile guide supported for longitudinal movement along the lead and having a cross-section configured to receive the pile, and a pile rotator supported near the lower end of the lead and configured to receive the pile, the pile rotator centering and rotating the noncircular pile.
|
