Motor rotor pressing ring with balance ring function

The utility model discloses a motor rotor pressing ring with a balance ring function. The motor rotor pressing ring comprises a pressing ring body, wherein an annular balance block installation groove is formed in the side surface of the pressing ring body, the cross section of the installation groove is of a dovetail-shaped structure, notches are formed in the installation groove symmetrically, a balance block of a dovetail-shaped structure which is matched with the installation groove is arranged therein, a threaded through hole is formed in the balance block, and a screw passes through the balance block and presses the balance block against the bottom part of the installation groove, so that the balance block is fixed in the installation groove. The motor rotor pressing ring can effectively reduce axial space of a motor rotor, saves labor and material, improves production efficiency, reduces production cost, is simple in structure, convenient in installation and operation and high in efficiency, is stable and reliable in balance block fixation, and can effectively protect the balancing stability of the pressing ring in high-speed rotation.