OPERATION DEVICE FOR HIGH PERFORMANCE LINEAR INDUCTION MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a high performance elevator car door system for opening and closing the door of elevator car. SOLUTION: An elevator car door system for opening and closing the door of elevator car includes a high performance linear induction motor having a pair of moving primary sides 16 mounted to each door hanger 14 and a motor secondary side 18 mounted to a header bracket fixed to the elevator car. Each motor pirmary side 16 includes a primary winding 24 and back iron 26 forming electromagnetic air gap between a primary winding 24 and the motor primary side 16 separated by a plurality of spacers 28. The motor secondary side 18 is placed between the porimary winding 24 and the back iron 26 when the moving motor primary side 16 runs on the motor secondary side and generate thrust.