Low-speed large-torque permanent magnet frequency conversion hollow shaft motor

The utility model provides a low-speed large-torque permanent magnet frequency conversion hollow shaft motor. The motor comprises an end cover, a base, a stator, a rotor core and a hollow motor shaft. The stator is fixedly installed in the machine base, the rotor iron core is fixedly installed on the hollow motor shaft to form a rotor, the rotor is installed on the inner side of the stator in a matched mode, and the end covers are installed at the two ends of the machine base. The hollow motor shaft is connected with the end cover through a bearing, and the axial length of the hollow motor shaft is smaller than the sum of the diameter lengths of the hollow motor shaft and the rotor core. The whole motor is flat and thick and can be accommodated in a narrow space, so that the requirement of equipment space limitation can be reduced. Equipment can be directly driven, a speed reducer is omitted, and energy loss and installation space are reduced. A key groove is formed in the hollow shaft, an input shaft of equi