Crane-hook measuring system simplifies production-floor weighing

A large manufacturer of transformers needed a load-indication system which could: (1) handle capacities over 100 tonnes, (2) be implemented without great expense, and (3) be operated without obstructing production.

A large manufacturer of transformers needed a load-indication system which could: (1) handle capacities over 100 tonnes, (2) be implemented without great expense, and (3) be operated without obstructing production.

The solution:
Attach strain gages to the shank hook of an existing 120-tonne capacity overhead-traveling crane and process the signals with an amplifier also mounted on the crane hook. The amplifier includes an automatic taring device which permits zeroing at any time. Amplified signals are transmitted via sliprings to the cab where the weight is displayed digitally.