Motor rotor rotating shaft convenient for heat dissipation, motor rotor and heat dissipation motor

The utility model discloses a motor rotor rotating shaft convenient for heat dissipation, a motor rotor and a heat dissipation motor, and relates to the technical field of electric devices.The motor rotor rotating shaft convenient for heat dissipation structurally comprises a rotating shaft, a plurality of supporting blades are symmetrically arranged on the rotating shaft in the axis direction of the rotating shaft, and the supporting blades are arranged in the length direction of the rotating shaft; at least one group of air grooves are symmetrically formed in the outer side surface of the rotating shaft along the length direction, so that the rotor rotating shaft can effectively dissipate heat; the motor rotor rotating shaft convenient for heat dissipation is arranged in the motor rotor, so that cooling air can pass through the interior of the rotor, redundant heat is effectively taken away, and the temperature of the rotor is prevented from rising too fast; and by arranging the motor rotor in the heat diss