Crane anti-skewing device

摘要

An anti-skewing device for a bridge crane comprises a proximity switch near a first side of a first track and near a first end of the crane for detecting the proximity of the switch to the first side of the first track and thereby any skewing of the crane. There is an electrically activated brake for each set of wheels. A circuit connects the proximity switch to each of the brakes to slow one end of the crane relative to another end and thereby correct any skewing during movement of the crane.