Hydraulic system with constant pressure maintaining function

• Main Authors: LU CHANGGENG, LU LIN, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model discloses a hydraulic system with constant pressure maintaining, which belongs to the technical field of hydraulic systems and comprises an oil tank, a variable pump, an oil cylinder and a pressure maintaining oil way, an oil inlet of the variable pump is connected with the oil tank, an oil outlet of the variable pump is provided with a first one-way valve, and an outlet oil way of the first one-way valve is connected with an electromagnetic reversing valve. A first working oil port of the electromagnetic reversing valve is connected with a rodless cavity of the oil cylinder, a second working oil port of the electromagnetic reversing valve is connected with a rod cavity of the oil cylinder, the pressure maintaining oil way is arranged on an oil way between the first one-way valve and the electromagnetic reversing valve, and the pressure maintaining oil way comprises a high-pressure energy accumulator and a high-pressure sensor. The pressure maintaining device has the advantages of pressure m