What's the system of electric hoist overhead travelling crane?

 An electric hoisting mechanism, a traveling mechanism (both trolley and overhead travelling crane), and a rotation mechanism make up an electric hoist overhead travelling crane. The hoisting mechanism, which is a sort of electric hoist, is the first. It consists of an electric motor as the driving device, a brake as the braking device, a reducer as the transmission device, and a pulley as the fetching spinning device (hook, grab, magnetic disc, and wire rope, chain, trolley, drum, sprocket and rope-guiding device).

The trolley travel mechanism is the second type of horizontal travel mechanism. A traveling trolley is made up of an electric motor, braking device (brake), transmission device (reducer), and trolley wheel device. The vertical travel mechanism, which is utilized by overhead travelling cranes, is the third type of travel mechanism. This mechanism includes the driving mechanism (electric motor), braking device (brake), transmission device (reducer), and overhead travelling crane wheel device. Overhead travelling cranes with electric hoists offer the advantage of having a three-in-one driving device. It combines the components for driving (electric motor), braking (brake), and transmission (reducer).