Double deck elevator car with adjustable floor

摘要

The upper deck (12) of a double deck elevator (10) utilizes actuators (30, 31) to adjust the vertical distance between a moveable platform (29) and a fixed platform (15), thereby to accommodate spacing of landings (37, 39). Position sensors (32, 33) may be utilized in closed loop positional control (Fig. 2) of hydraulic, jack screw or linear actuators, or open loop position control (Fig. 3) may be used with stepper motors, one revolution clutches and the like. Adjustment may occur during car motion.