GUIDE RAIL DEVIATION MEASUREMENT DEVICE

摘要

A deviation measurement device for measuring the deviation of a lift guide rail in a lift well is disclosed which comprises a laser (10) for emitting a reference beam relative to a lift rail (12). A carriage (14) is mounted on the rail (12) and is freely suspended from a lift car (25) by a support arm (36). The carriage (14) has a carriage mount (30) with guide rollers (70-72) for allowing the carriage to move on the rail (12) and a sensor support section (32) for mounting a sensor for detecting the laser beam. A stepping motor (130) is provided for moving the sensor (50) so that the sensor (50) tracks the laser beam and provides an indication of the deviation of the guide rail (12).