| 摘要 |
<p>A paving breaker has a working piston (22) that strikes a striking surface (23). The hydraulically controlled working piston (22) is controlled back and forth by a controller (40, 41). The end portion (51) of the piston plunges into a rear chamber (50) arranged at the rear end of the working cylinder (21). A compressed gas accumulator (52) connected to the rear chamber (50) is loaded during each return stroke of the working piston and unloaded during the following working stroke.</p> |
