DOUBLE DECK ELEVATOR THAT CONTROLS A VELOCITY CHANGE DURING INTER-CAGE DISTANCE ADJUSTMENT

摘要

FA DOUBLE DECK ELEVATOR COMPRISES A WINDING MACHINE (13) WHICH LIFTS UP/DOWN A CAGE FRAME (1) LOADED WITH TWO CAGES (2, 4) IN A VERTICAL DIRECTION, A CAGE DRIVING UNIT (10) WHICH CHANGES A RELATIVE DISTANCE BETWEEN UPPER AND LOWER CAGES, AND A CAGE POSITION CONTROLLER (16) WHICH STARTS AN INTER-CAGE DISTANCE ADJUSTMENT OPERATION OF THE CAGE DRIVING UNIT (10) ALMOST AT THE SAME TIME WHEN THE WINDING MACHINE (13) IS SHIFTED FROM AN ACCELERATION OPERATION TO A CONSTANT VELOCITY OPERATION, AND CHANGES AN OPERATING VELOCITY OF THE INTER-CAGE DISTANCE ADJUSTMENT OPERATION CORRESPONDING TO A DESTINATION FLOOR ALMOST AT THE SAME TIME WHEN THE WINDING MACHINE (13) CHANGES FROM THE CONSTANT VELOCITY OPERATION TO A DECELERATION OPERATION AFTER THE DESTINATION FLOOR IS DETERMINED, WHEREBY COMPLETING THE INTER-CAGE DISTANCE ADJUSTMENT OPERATION ALMOST AT THE SAME TIME WHEN THE WINDING MACHINE (13) STOPS.(FIG 3)