| 摘要 |
<p>An implement designed to replace the usual moil (steel or pick) of a conventional hydraulically driven hammer or the like so that piles can be driven. The implement consists of a shaft (2) which is held in the hammer (9) in the position normally occupied by the rock breaking moil so as to take the impacts of the hammer. To the shaft is integrally or otherwise strongly joined a further component which is suitably shaped to engage a pile and transmit hammering forces thereto. This component (1) may be recessed so as to envelope the head of a pile (11). In particular it may be bell, box, cylindrical or spherical in shape. If sheet piling is to be driven these shapes are suitably slotted. Alternatively the pile engaging component may be merely a flat plate.</p> |
