| 摘要 |
PURPOSE: A hydraulic driving system is provided to automatically increase the rpm of many consumption devices at low cost by employing a bypass device for generating a hydraulic control signal. CONSTITUTION: A hydraulic driving system(1) comprises a pump(2) driven with a drive motor, especially, a fixed displacement pump. The pump is designed to feed a plurality of consumption devices, especially, hydraulic operating apparatuses. A bypass device is allocated in a delivery line(5) of the pump. The rpm of the drive motor is raised according to the operation of the consumption devices. A hydraulic control signal for increasing the rpm of the drive motor is generated by the bypass device. |
