Hydraulic power unit with multimode pressure supply

• Main Authors: ZHAO DUDU, ZHAO WAN, LI YAOGUANG, YANG QIANGQIANG
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• 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 hydraulic power unit comprises an oil tank, a manual hydraulic pump, an electric pump, a first one-way valve, a second one-way valve, a third one-way valve, an overflow valve, an energy accumulator, a first manual ball valve, a second manual ball valve, a first pressure measuring instrument, a first electromagnetic reversing valve, a flow regulating valve, a second electromagnetic reversing valve, a pressure reducing valve and a second pressure measuring instrument. Under the power-on condition, high-pressure oil enters the energy accumulator, the second electromagnetic reversing valve and the pressure reducing valve through the electric pump, the first one-way valve and the third one-way valve, after electric energy is interrupted, the energy accumulator can serve as a high-pressure oil output device used after the electric energy is interrupted, and oil is supplied through the flow adjusting valve and the pressure reducing valve. The manual hydraulic pump can supply oil through the second one-way valve,