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100 ton gantry crane consists of four main parts, namely, the bridge structure, the crane traveling mechanism, the trolley and the electric equipment. All movements of the crane are controlled in the operating room. This type of double beam gantry crane has two conductive forms, cable and sliding contact line.
link:https://www.kinocranes.sg/overhead-crane/100-ton-gantry-crane.html
100 Ton Gantry Crane | Kenancranes