Integrated oil pump master station

The utility model relates to an integrated oil pump master station which comprises an oil tank, an electric oil pump, a change valve and pipelines connected among the same. The integrated oil pump master station also comprises a control circuit, a variable-frequency speed controller and an electric-contact pressure gauge with a signal output end, wherein a variable-frequency main circuit of the variable-frequency speed controller is connected between a power frequency power supply and a power supply incoming line of the electric oil pump, and a signal port is also connected with a control circuit through a circuit; the electric-contact pressure gauge is connected with an oil outlet pipe port of the electric oil pump through an oil circuit, and the signal output end of the electric-contact pressure gauge is connected with the control circuit through a circuit; and a valve port A and a valve port B of the change valve are both connected with the oil pipe with a quick connector. The utility model can conveniently and directly supply hydraulic power for hydraulic devices with different sizes and various tonnages, effectively increase the operating efficiency of various hydraulic devices, reduce labor intensity of workers, increase safe production level, solve the damage problem of small size hydraulic devices and reduce the production and maintenance cost of an enterprise.