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[CN 202010821089.3] Hydraulic system of free forging electro-hydraulic hammer driven by full hydraulic pressure
[CN 202010821089.3] Title of a fully hydraulically driven free forging electro-hydraulic hammer hydraulic system: Application number of a fully hydraulically driven free forging electro-hydraulic hammer hydraulic system: CN 202010821089.3 Applicant: Taiyuan University of Technology Application Date: 2020-8-14 Patent Type: Application for the Invention The present invention discloses a fully hydraulically driven free forging electro-hydraulic hammer hydraulic system, which is characterized in that it comprises a pilot hydraulic cylinder, a power hydraulic cylinder, a pilot hydraulic cylinder, the power stage hydraulic cylinder circuit includes a stepless speed regulation charging circuit, a stepless speed regulation hammer lifting circuit, an accumulator circuit and a flexible unloading circuit. The pilot stage hydraulic cylinder circuit and the power stage hydraulic cylinder circuit cooperate to control to meet the functional requirements of full hydraulic drive free forging electro-hydraulic hammer lifting, light forging, heavy forging, slow forging, fast forging, suspension hammer and the like; the main position closed-loop control of the pilot stage hydraulic cylinder and the slave position closed-loop control of the power stage hydraulic cylinder ensure the accurate control of the positions of the second piston and the second piston rod of the power stage hydraulic cylinder. The pressure closed-loop control of the pilot stage hydraulic cylinder and the pressure closed-loop control of the power stage hydraulic cylinder ensure that the pressure of each system of the fully hydraulically driven free forging electro-hydraulic hammer can be adjusted online.
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