| 摘要 |
A shock absorbing assembly (11) for a drilling ma- chine (13) utilizing a down drill hole hammer (16) having a driver member (23) for receiving input forces, a driven mem- ber (41) for transmitting forces from the driver member (23) to an attached drill string (15), and a resilient member (53) which is placed under tension and elongated when downward forces are applied. The resilient member (53) under tension receives and dissipates shocks and vibrations.
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