Bidirectional magnetic levitation brush motor device

A bidirectional magnetic levitation brush motor device, comprising a motor housing, a motor shaft and an end cover, wherein the 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 is arranged between the two shaft holes, bearings are arranged at junctions of the motor shaft with the motor housing and the end cover, the end of the motor shaft that is away from the end cover extends out of the motor housing, a transmission connection shaft is arranged at a top end of the motor shaft, an insulated protective shell is arranged on the side of the end cover that is away from the motor housing, a commutator is sleeved on an outer side of a bottom of the motor shaft, two symmetrically distributed electric brush needles are arranged on two sides of a bottom of the commutator, each of the electric brush needles has an L-shaped section, a top end and a bottom end of each of the electric brush needles are respectively connected to the commutator and the end cover in an inserted manner, 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 framework and magnetic steel, placing grooves are formed in two sides of the stator framework, the magnetic steel is arranged inside the placing grooves, and limiting frames are arranged on two sides of an inner wall of the stator framework;
• the rotor assembly comprises a rotor core and coil windings, the rotor core is arranged on an outer side of the motor shaft in an overlying manner, the rotor core comprises rotor teeth and pole shoes, the rotor teeth and the pole shoes are arranged integrally, and the coil windings are wound around outer sides of the rotor teeth;
• and
• four placing grooves are formed, the four placing grooves are symmetrically distributed about a bisector of the rotor core, the spacing angles among the four placing grooves are unequal, the four pieces of magnetic steel are distributed in a height staggered manner, every two adjacent pieces of magnetic steel have unequal heights, self-attraction surfaces and non-self-attraction surfaces are formed by the magnetic steel and the rotor core, and areas of the self-attraction surfaces are greater than areas of the non-self-attraction surfaces.