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[CN 201611019583.8] Hydraulic Circuit for Independent Oil Supplement of Hydraulic Fast Forging Machine
[CN 201611019583.8] Title of hydraulic circuit for independent oil replenishment of hydraulic fast forging machine: Application number of hydraulic circuit for independent oil replenishment of hydraulic fast forging machine: CN 201611019583.8 Applicant: Jiangsu Huawei Machinery Manufacturing Co., Ltd. Application Date: 2016-11-21 Patent Type: Application for Invention The present invention relates to a hydraulic circuit for independent oil replenishment of hydraulic fast forging machine, and a pressure relief circuit is added between the main hydraulic cylinder and the oil tank, an unloading valve is provided on the pressure relief circuit. The unloading valve is first opened when the idle stroke is quickly lowered, and the charging valve is closed when it is opened to quickly reduce the pressure in the main hydraulic cylinder; the main hydraulic cylinder and the charging tank A liquid charging valve is arranged on the connecting pipe, and the hydraulic oil in the liquid charging tank is high-pressure oil. When the oil pressure in the main hydraulic cylinder is lower than the oil pressure in the filling tank, the main hydraulic cylinder can be quickly and independently replenished. It changes the working mode of filling tank and hydraulic pump in the traditional hydraulic circuit at the same time, avoids the shortcomings of slow speed caused by air suction, and realizes the beneficial effects of energy saving, stability and high efficiency of the system.
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