Overhead cranes Single Girder HOist have been around since the 1880s, but at that time they were still operated by hand, unlike now those that already use electricity.
the use of 3 phase electricity on overhead cranes began in 1890. J.H Whiting, founder of the Whiting Corporation, began building an overhead crane with 3 motors. However at that time the speed was still very slow and the maximum capacity was still limited. only up to 40 tonnes maximum.
The term in Overhead Crane
1. Brake
is a tool on the crane which functions to stop the movement of the hoist or motor end carrriage or motor trolley hoist by means of a friction system or stopping electrical power.
2. Bridge
is part of the overhead crane which consists of a girder, walk way, railling, shaft, where the trolley of this hoist is located.