HIGH PERFORMANCE LINEAR INDUCTION MOTOR DOOR OPERATOR

摘要

An elevator car door system that opens and closes elevator doors of an elevator car includes a pair of movable main motors each attached to a door hanger for each door, and a stationary motor secendary attached to a header bracket fixed to the elevator car. High performance linear induction motor. Each main motor has a main winding and a backiron separated by a plurality of spacers in which magnetic gaps are established between them. The auxiliary motor is installed between the back iron and the main winding so that the main moving motor moves transversely to the thrust generating auxiliary motor.