Traction drive for elevator

Details Traction drive for elevator Traction drive for elevator

H - Electricity

02

K

H02K 21/12 (2006.01) B66B 11/04 (2006.01) H02K 7/18 (2006.01) H02K 21/02 (2006.01)

Patent

CA 2585877

A traction drive for an elevator comprises a sheave 5 for actuating a transmission means of the elevator and a synchronous motor, said synchronous motor comprising a stator 1 with at least one winding for generating a magnetic field rotating around a motor axis and a rotor 3 comprising at least one permanent magnet 7, said rotor being coupled to said sheave for transmitting a torque. According to the present invention said permanent magnet 7 is longer in the motor axis direction than the stator core and/or said rotor is composed from a plurality of separate permanent magnets 7 and separate magnetic sectors 6 provided alternating in a circumferential direction perpendicular to the motor axis to concentrate the magnetic flux in axial and/or radial direction.

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