Bidirectional magnetic levitation acoustic motor device

A bidirectional magnetic levitation acoustic motor device, comprising a motor housing and a motor shaft, wherein the motor shaft is arranged at an axis of the motor housing, an end cover is arranged at a bottom end of the motor housing, shaft holes are formed in axes of the motor housing and the end cover, the motor shaft penetrates through the two shaft holes, bearings are arranged at junctions of the motor shaft and the shaft holes, a transmission unit is arranged inside the motor housing, the transmission unit comprises a stator assembly and a rotor assembly, and the rotor assembly is arranged inside the stator assembly;

• the stator assembly comprises a stator core and coil windings, insulated coil holders are arranged on two sides of the stator core, stator teeth are arranged at two ends inside the stator core, a pole shoe is fixedly connected to the side of each of the stator teeth that is away from the stator core, the pole shoes match with the rotor assembly, the coil windings are wound around two sides of the stator core, and two ends of each of the coil windings are wound around the insulated coil holders;
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• the rotor assembly comprises a rotor core and magnetic steel, the rotor core is arranged on an outer side of the motor shaft in an overlying manner, four placing grooves are formed in an outer side surface of the rotor core, the four placing grooves are symmetrically distributed about a bisector of the rotor core, the spacing angles between each of the placing grooves and the placing grooves on two sides thereof are unequal, the magnetic steel is arranged in the four placing grooves, the four pieces of magnetic steel are distributed in a height staggered manner, self-attraction surfaces and non-self-attraction surfaces are formed by the magnetic steel and the stator core, and areas of the self-attraction surfaces are greater than areas of the non-self-attraction surfaces;
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• wherein the four pieces of magnetic steel are divided into two groups, the two pieces of magnetic steel in each of the two groups have opposite polarities, and the two groups of magnetic steel have correspondingly identical upper and lower polarities.