Pressure plate and side plate respectively loaded to two high-pressure areas of double-acting vane pump

The invention belongs to hydraulic components in mechanical industries, and particularly relates to a pressure plate and a side plate respectively loaded to two high-pressure areas of a double-actingvane pump. A pressure plate oil outlet I and a pressure plate oil outlet II are symmetrically formed at a 180-degree angle in the front of the pressure plate. A pressure plate oil suction window I anda pressure plate oil suction window II are symmetrically arranged at the edge of the pressure plate between heads and tails of the pressure plate oil outlet I and the pressure plate oil outlet II. The included angle between heads and tails of a pressure plate oil through groove I and a pressure plate oil through groove IV and a pressure plate oil through groove II and a pressure plate oil throughgroove III is alpha. The tangent line across the circle center at the beginning of the pressure plate oil through groove I and the connection line of the starting edge of the pressure plate oil suction window II and the circle center form a theta angle. The two oil outlets in the pressure plate in the pressure plate and the side plate loaded to the two high-pressure areas of the double-acting vane pump can be completely loaded independently so that the double-acting vane pump can realize two independent double pump functions.