Hydraulic system of double-sided corrugating machine

The utility model relates to the technical field of papermaking equipment, in particular to a hydraulic system of a double-sided corrugating machine, which comprises a pressure roll hydraulic unit and a corrugating roll hydraulic unit, the pressure roll hydraulic unit comprises a pressure roll valve block, a three-position four-way electromagnetic valve a, a speed regulating valve group a and a pressure roll oil cylinder; the corrugating roll hydraulic unit comprises a corrugating roll valve block, a three-position four-way electromagnetic valve b, a speed regulating valve group b and a corrugating roll oil cylinder; wherein the speed regulating valve group a comprises a proportional speed regulating valve a1, a direct proportional overflow valve a2 and a pressure sensor a3; and the speed regulating valve group b comprises a proportional speed regulating valve b1, a direct proportional overflow valve b2 and a pressure sensor b3. The hydraulic system of the double-sided corrugating machine not only can be appl