Two-dimensional motor piston pump

A two-dimensional motor 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;
• wherein the two-dimensional motor comprises a stator and an outer rotor, and the outer rotor is coaxial with the stator and is sleeved outside the stator, the stator comprises a left stator and a right stator;
• wherein the two-dimensional piston pump comprises:
• a flow distribution mechanism that is comprising a flow distribution rotor and a pump body;
• a piston mechanism that is comprising a left cam and a right cam;
• wherein an inner surface of the left cam forms a gap seal with an outer surface of the left stator, defining a left volume chamber in cooperation with the flow distribution rotor;
• an inner surface of the right cam forms a gap seal with an outer surface of the right stator, defining a right volume chamber in cooperation with the flow distribution rotor;
• a roller assembly, including a plurality of sets of rollers and roller shafts;
• wherein each set of the plurality of sets comprises one roller and one roller shaft, two sets of the plurality of sets of rollers and roller shafts are fixed to the left stator, another two sets of the plurality of sets of rollers and roller shafts are fixed to the right stator, and rollers of the two sets of the plurality of sets of rollers and roller shafts are connected to concave and convex surfaces of the left cam, rollers of the another two sets of the plurality of sets of rollers and roller shafts are connected to concave and convex surfaces of the right cam;
• and
• a pump housing, a left end cover, and a right end cover;
• wherein the pump housing is sleeved outside the pump body, and the pump housing defines a first flow channel port and a second flow channel port;
• the first flow channel port communicates with a first annular groove on the pump body, and the second flow channel port communicates with a second annular groove on the pump body;
• the left end cover and the right end cover are respectively arranged on both sides of the pump housing and are fixedly fitted to the pump housing, stator, and roller assembly.