| 摘要 |
There is provided a split-flow hydraulic pump-equipped operating machine. The travel independent valve is designed to be switched to the merging position in the case of driving the front working device without actuation of the travel device or in the case of driving the travel device and the front working device concurrently, and switched to the independently feeding position in the case of driving the travel device without actuation of the front working device. The load sensing system controls the discharge flow rate of the hydraulic pump on the basis of a pressure difference between the discharge pressure of the hydraulic pump and the maximum load pressure of the hydraulic actuator in any of the case of driving the travel device, the case of driving the front working device, and the case of driving both the travel device and the front working device.
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