A kind of bearing-free permanent magnet synchronous motor

A kind of bearing-free permanent magnet synchronous motor

  • CN 108,123,562 A
  • Filed: 12/19/2017
  • Published: 06/05/2018
  • Est. Priority Date: 12/19/2017
  • Status: Active Application
First Claim
Patent Images

1. a kind of bearing-free permanent magnet synchronous motor, including motor housing(

  • 13)

    , rotor shaft(

    1)

    , stator(

    5)

    , rotor(

    6)

    ,The one end for being characterized in that rotor shaft is suspension end(

    16)

    , in suspension end(

    16)

    The reference rings of annular are fixed on rotor shaft(

    2)

    , rotor shaft suspension end is equipped with auxiliary rolling bearing(

    14)

    , aid in rolling bearing(

    14)

    With rotor shaft(

    1)

    Between leaveGap(

    4)

    , the shell of rolling bearing is aided in be mounted on motor housing, is pacified on the electric motor end cap of rotor shaft suspension end one sideEquipped with position sensor(

    3)

    , position sensor(

    3)

    With annular reference rings(

    2)

    It is radially aligned, and between being left between reference ringsGap, rotor shaft(

    1)

    The other end is by aligning auxiliary bearing(

    9)

    Support, aligning auxiliary bearing(

    9)

    Shell be mounted on motor housingOn, optical code disk is installed on the electric motor end cap of aligning auxiliary bearing one side(

    8)

    , it is cylindrical between reference rings and optical code diskRotor(

    6)

    , rotor(

    6)

    Mounted on rotor shaft(

    1)

    On, rotor(

    6)

    Material is permanent-magnet material, is equipped in rotor outer layer recessedSlot is embedded with damping coil in groove(

    7)

    , damping coil(

    7)

    End to end formation short circuit, stator(

    5)

    It is cylindrical, statorOutside is fixed on motor housing, lap wound torque winding on the inside of stator(

    11)

    And suspending windings(

    12)

    , rotor(

    6)

    With determining(

    5)

    SonBetween leave spacing.

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