| 摘要 |
Pressurized medium supply circuit of a mobile machine comprises feeder lines for supplying pressurized medium to the actuators for moving the swinging arms of the machine which effect the advancing movement with the help of the movement of these actuators, wherein the circuit comprises a pump (A) and lines (1a-6a) leading to the different arms. The circuit also comprises an additional pump (B) and lines (1b-6b) which issue from the additional pump (B), lead to the different arms and are connected in parallel with the lines leading to the arms. In the lines connected mutually in parallel there are controllable valves (1c-6c) by means of which the additional pump (B), which increases the volume flow of the pressurized medium, can be temporarily arranged in connection with the corresponding actuators in the arms. |
