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[CN 201721442799.5] High-efficiency and energy-saving return cylinder of hydraulic press


[CN 201721442799.5] Title of high-efficiency and energy-saving return cylinder of a hydraulic machine: Application number of high-efficiency and energy-saving return cylinder of a hydraulic machine: CN 201721442799.5 Applicant: Application date of Zhongke Juxin Jieneng Hot Forging Equipment Research and Development Co., Ltd.: 2017-11-2 Patent Type: Utility Model The utility model relates to a high-efficiency and energy-saving return cylinder of a hydraulic machine, including multiple single-rod return hydraulic cylinders symmetrically distributed on both sides of the main hydraulic cylinder, A number of single rod return hydraulic cylinders are divided into several groups, each group consists of a balance cylinder and a driving cylinder. The rod cavity of the balance cylinder is connected with the accumulator, and the pressure in the accumulator is filled into the oil cavity of the balance cylinder to make the balance cylinder balance the weight of the movable beam and its working part. The driving cylinder is connected differentially. When the free travel of the movable beam and its working part is fast down and back up, as long as the driving cylinder applies less power to the movable beam, it can drive the large-mass movable beam and its working part to realize the free-travel fast down and upward return, so as to realize the hydraulic press with a small number of pumps, low energy consumption, and fast response speed., The purpose of high work efficiency, low vibration and low noise.