Counteracting elevator car oscillation

Details Counteracting elevator car oscillation Counteracting elevator car oscillation

B - Operations, Transporting

66

B

364/23

B66B 7/02 (2006.01) B66B 7/04 (2006.01)

Patent

CA 1260637

ABSTRACT OF THE DISCLOSURE A method of and apparatus for continuously counteracting lateral oscillation of an elevator car provided with guide shoes running along guide rails by laterally displacing the guide shoes in accordance with the out-of-straightness of the guide rails by ascertaining the magnitudes of local deviations of the guide rails from a straight condition thereof and setting up in the memory of a computer controlling the guide shoes a deviation table relating the local deviations to the position of the car along the path of travel, and subsequently controlling the guide shoes by the computer in dependence on the table to displace the elevator car laterally to compensate for the local deviation at any position of the elevator car at which the local deviations occur.

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