| 摘要 |
A hammer assembly (10) including a hammer housing (12) and a work tool (16) movably supported in the hammer housing is provided. A gas chamber (38) is defined in the hammer housing (12) and contains a compressible gas. An accumulator assembly (40) includes an interior space (44). A barrier (46) divides the interior space into a first interior portion (48) containing a compressible gas and a second interior portion (50) configured to receive a pressurized fluid. The barrier (46) is configured to be movable in response to changing the amount of pressurized fluid in the second interior portion (50) and such that movement of the barrier varies the volume of the first interior portion (48). The first interior portion (48) is in communication with the gas chamber (38). A control valve assembly (54) is configured for selectively placing the second interior portion (50) of the accumulator assembly (40) in communication with a pressurized fluid source. |
