Piston pump with two motor stators and one motor rotor having cam driving piston and flow distributor

A two-dimensional motor combination piston pump, comprising a two-dimensional motor and a two-dimensional piston pump, wherein the two-dimensional motor and the two-dimensional piston pump are nested with each other and arranged coaxially;

• the two-dimensional motor comprises two stators and one outer rotor, the two stators are distributed symmetrically, the outer rotor is coaxial with the two stators and sleeves outside of the two stators;
• the two-dimensional piston pump comprises a flow distribution mechanism, the flow distribution mechanism comprises a flow distribution rotor and a pump body;
• the two-dimensional piston pump comprises a piston mechanism, the piston mechanism comprises a left cam and a right cam;
• the left cam is fixedly connected to a left end surface of the flow distribution rotor through a second positioning pin, the right cam is fixedly connected to a right end surface of the flow distribution rotor through another second positioning pin;
• a middle of an inner side of the flow distribution rotor is arranged with an annular shoulder;
• an inner diameter of the shoulder, an inner diameter of the left cam, and an inner diameter of the right cam are equal to each other;
• an inner surface of the shoulder inside the flow distribution rotor, the left cam, and the right cam form gap seals with outer surfaces of a left stator and a right stator of each of the two stators to further form a first volume chamber, a second volume chamber, a third volume chamber, and a fourth volume chamber cooperatively with the flow distribution rotor;
• the two-dimensional piston pump comprises a roller assembly, and the roller assembly further comprises a roller and a roller shaft, the roller assembly is fixed to an outside of the stator, the roller contacts a convex surface and a concave surface of the left cam and the right cam;
• the two-dimensional piston pump comprises a pump housing, a left end cover, and a right end cover, the pump housing sleeves an outside of the pump body and defines a first flow channel port, a second flow channel port, a third flow channel port, and a fourth flow channel port, the first flow channel port is communicated with a first annular groove of the pump body, the second flow channel port is communicated with a second annular groove of the pump body, the third flow channel port is communicated with a third annular groove of the pump body, the fourth flow channel port is communicated with a fourth annular groove of the pump body;
• the left end cover covers a side of the pump housing, the right end cover covers an other side of the pump housing, the pump housing, the two stators, and the roller assembly are fixed engaged with each other.