With the technology development in ship building industry, Shipyard gantry cranes meet the demands of large and long welding plate technique and lifting capacity and span with excellence of structures and designs and of ease to be operated and maintained.

The Structure of shipyard gantry crane has single and double girder types. The single girder type is usually favored when large lifting capacity and span is required. Its main composing systems are gantry frame, up trolley, lower trolley, bridge travelling mechanism, maintenance crane, lubrication, elevator, and electrical equipments. And Shipyard gantry crane is usually equipped with some other devices such as rail clamp, wheel brake, anchoring device, load cell, wind speed and direction indicator, and limit switches in each mechanism and other safty device. The crane travelling deviation adapting system may be applied when large span is required. Ship building gantry cranes can be provided with satisfied enormous span, large hoisting capacity and lifting height with good performance of welding connection and security on different working conditions.