Load e.g. port container, lifting unit for e.g. container gantry crane, has sensor with reduced diameter and inserted into longitudinal channel, and connector transmitting signals from sensor to sensor signal reception and analyzing unit

摘要

The unit (1) has a proximal part (1a) fixed to a lifting apparatus and a distal part (1b) connected to a load to be lifted. A longitudinal section (1c) is developed from the proximal part in a direction of the distal part and is elastically elongated under an action of a part of lifting effort. An optical fiber stress sensor (2) having reduced diameter is inserted into a longitudinal channel (1d) of the section and is fixed to a lateral wall of the channel. A connector (3) transmits signals from the sensor to a sensor signal reception and analyzing unit (4).