Double Girder Crane

Bridge cranes generally consist of three major parts: mechanical, electrical and metal structures. The appearance of the bridge crane is like a single-span flat bridge with both ends supported on two parallel overhead rails and running in translation.

The mechanical systems comprise the hoist, trolley travel and crane travel mechanisms. The hoist raises and lowers loads; trolley travel moves them across the bridge; crane travel moves the trolley and load along the runway for handling, loading and unloading.

Metal structure part: composed of bridge frame and small frame.

Electrical part: composed of electrical equipment and electrical circuits.