| 摘要 |
<p>A block of cushioning material arranged to be disposed in a cavity within a drive cap of a pile hammer, the drive cap being positioned on the upper end of a pile for impact engagement by the ram with the block of cushioning material during a pile driving operation, the block of cushioning material being of high heat conductivity and arranged in heat transfer relationship with the inner wall of the cavity whereby hysteresis heat generated within the block of cushioning material during impact driving is conducted by the block to the drive cap acting as a heat sink for ultimate radiation of the heat into the ambient air.</p> |
