Double-acting vane pump

The utility model relates to the technical field of hydraulic transmission control, in particular to a double-acting vane pump which comprises a pump body, a rotating shaft, a rotor and a stator, wherein the rotor is located in the stator, the rotating shaft penetrates through the rotor and is fixedly connected with the rotor, the circumference of the rotor is provided with at least eight radial grooves, vanes are movably embedded in the radial grooves, outer ends of the vanes are connected with the inner wall of the stator in an abutting mode, the pump body is provided with a front valve plate and a back valve plate, the rotor and the stator are located between the front valve plate and the back valve plate, the pump body is provided with an oil inlet and an oil outlet, the section of the inner wall of the stator is elliptical, the front valve plate is provided with two oil absorption windows, the back valve plate is provided with two oil pressing windows, the oil absorption windows are communicated with the oil inlet, and the oil outlet is communicated with the oil pressing windows. According to the double-acting vane pump, the structure is simple and compact, radial stress of the rotor is uniform, vibration of the pump body in operation is reduced, and on the premise of the same volume and the same rotating speed, discharge capacity of the vane pump is increased by near one time, and practicability is greatly improved.