Non-axial force biserial radial piston pump distributing oil on end surface

The invention discloses a non-axial force biserial radial piston pump distributing oil on an end surface. The biserial radial piston pump comprises a pump housing body; a first cam and a second cam are mounted in the pump housing body; the angle formed between the eccentric directions of the first cam and the second cam is 180 degrees; the two ends of a transmission shaft are supported by pump end covers; a rotor is mounted on the transmission shaft; the two sides of the rotor are propped against a first flow distributing plate and a second flow distributing plate respectively; two rows of radial piston holes are formed in the outer cylinder wall of the rotor in parallel; a piston is mounted in each piston hole; connecting rod skid shoes are mounted on the pistons, and are connected through spherical hinges; the first flow distributing plate and the second flow distributing plate are mounted on the pump end covers respectively; the angle formed between the mounting directions of the first flow distributing plate and the second flow distributing plate is 180 degrees; oil absorption arc grooves and oil pressing arc grooves which are isolated mutually are formed in the first flow distributing plate and the second flow distributing plate; oil inlet holes and oil outlet holes in the pump end covers are communicated with the oil absorption arc grooves and the oil pressing arc grooves respectively. According to the invention, distribution is realized through the first flow distributing plate and the second flow distributing plate; the piston pump has the advantages that the piston pump is compact in structure, simple in transmission, low in flow fluctuation, free from axial force, and reliable in support, conducts automatic hydraulic compensation, and is stable in operation, and long in service life.