bidge gantry crane

ChinaCoal05 Bridge gantry crane Introduction Gantry crane hoisting mechanism, trolley traveling mechanism and bridge structures, basically the same with bridge crane . Because large span, crane operating agencies mostly used driven way to prevent the crane skewed operation and increase the resistance, or even an accident. Gantry crane lifting trolley running on the bridge, and some lifting trolley is a arm crane. The legs on both sides of bridge are generally rigid legs; span