Traction drive for elevator

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...

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Bibliographic Details
Main Author OGAVA MARIO YOSHITARO
Format Patent
LanguageChinese
English
Published 26.12.2007
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
GENERATION
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
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Summary: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.
Bibliography:Application Number: CN200710138503