System for adjusting horizontal deviations of an elevator car during vertical travel

A system for reducing horizontal deviations of elevators in which a cage ascends or descends in an ascending/descending path while engaged with guide rails through guide shoes, said system comprising:

• displacement means, disposed between the cage and the guide shoes, for displacing the cage relative to the guide rails in a direction perpendicular to a plane of the guide rails and in a direction parallel to a plane of the guide rails, wherein the perpendicular and parallel displacement are independent of each other;
• a position deviation detecting device which detects positional deviations of the cage having a pair of lasers, one disposed at an uppermost portion of the ascending/descending path and the other disposed at a lower most portion of the ascending/descending path, and having a light receiving device disposed on a ceiling portion of the cage and light receiving device disposed on a lower most portion of the cage, so that the lasers are in optical communication with the light receiving devices;
• and
• control means connected to said displacement means and said position deviation device for controlling said displacement means to correct the positional deviation of the cage in accordance with positional deviation data applied from said positional deviation detecting device.

A system for reducing horizontal deviations of elevators in which a cage ascends or descends in an ascending/descending path while engaged with guide rails through guide shoes, said system comprising:

• displacement means, in communication with the guide shoes, for displacing the cage relative to the guide rails in a direction of rotation about an axis of the ascending/descending path;
• a position deviation detecting means for detecting positional deviations of the cage in a direction perpendicular to a side of the cage;
• and
• control means, connected to said displacement means and said position deviation means, for controlling said displacement means to correct the positional deviations of the cage in accordance with positional deviation data detected by said positional deviation detecting means.