Hollow main shaft of motor

The utility model discloses a motor hollow main shaft in the technical field of motor main shafts, which comprises a motor main body, the output end of the motor main body is connected with a main shaft body, the front end face of the motor main body is provided with a convex disc, the main shaft body penetrates through the front end wall of the convex disc, and the front end face of the convex disc and the outer side of the main shaft body are provided with a protective round sleeve. The outer side of the protective circular sleeve is in threaded connection with a sealing cover, connecting bases are arranged at the front ends of the outer walls of the left side and the right side of the protective circular sleeve and communicate with the main shaft body, locking assemblies are arranged in the connecting bases and comprise locking blocks, and notches matched with the locking blocks are formed in the outer wall of the main shaft body. The motor hollow main shaft replaces a traditional bolt to be connected with