| 摘要 |
Pressure accumulator (14) for connection to a hydraulic fluid-driven percussion device (10), which percussion device (10) comprises at least one impact piston (16) that is arranged to carry out a reciprocating motion caused by the pressure from the hydraulic fluid, whereby said pressure accumulator (14) is arranged in communication with the impact piston's hydraulic fluid space. The pressure accumulator (14) comprises a space (24, 26) that extends at least partly around said impact piston 16 when said pressure accumulator (14) is mounted on said percussion device (10). The space (24, 26) is, by means of a partition (22), divided into two separate pressure chambers so that the pressure chambers are located in the impact piston's axial direction (A) in relation to each other when said pressure accumulator (14) is mounted on said percussion device (10). A first (26) of said two separate pressure chambers is intended to be filled with a compressible medium, and a second pressure chamber (26) is in fluid communication with the impact piston's (16) hydraulic fluid space. |
