| 摘要 |
Distribution valve (7) for controlling hydraulic flows to different consumers, wherein the distribution valve includes a to and fro movable valve body (8). The valve body (8) includes a central bore hole (38, 39) extending in axial direction which cooperates with a plunger (35) and drives the valve body (8) in a pressurize state. The plunger includes an outer piston portion (36) having reduced diameter (d), which in an end position region of the valve body is arranged, together with a portion (38) of the bore hole having reduced diameter (d), to establish a damping chamber (40) for end position damping of the valve body (8). The invention also relates to a rock drilling machine. |
