Ventilation heat radiating and end surface assembling structure of motor

The utility model provides a ventilation heat radiating and end surface assembling structure of a motor, wherein a motor rotor is fixedly sleeved on a main shaft of the motor. Furthermore one side of the motor rotor, which is next to the main shaft of the motor, is provided with a rotor heat radiating channel. An inner fan is sleeved on the main shaft of the motor. A bearing is mounted in a bearing sleeve which is fastened in a motor end cap that is mounted on a motor housing. Simultaneously an oil injecting channel is arranged on the bearing sleeve. The oil injecting channel is connected with an oil injecting assembly through an oil pipe. An outer fan is sleeved on the main shaft of the motor. A key for the outer fan is arranged on the main shaft of the motor. An air baffle plate is mounted on the motor housing. Additionally, a motor stator is internally provided with a stator heat radiating channel. According to the ventilation heat radiating and end surface assembling structure of the motor, through improving the structures of a coil winding and the motor rotor, arranging the rotor heat radiating channel and the stator heat radiating channel, the heat of the motor rotor and the motor stator are ventilated in time through a circulating air channel which is driven by rotation of an inner fan, thereby preventing coil burnout; simultaneously self heat power consumption of the motor is effectively reduced, thereby greatly improving energy conversion efficiency of the motor.