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Gantry cranes or Goliath Cranes are very versatile cranes used typically for activities in steel warehouse, precast yards, construction sites, port, train station, powe plant and other outdoor applications.
Include single girder gantry crane, double girder gantry crane, semi gantry crane, trussed gantry crane. Suitable for indoor and outdoor usage.
These cranes can be completely customized for SWL, span, lifting height, speeds, control method and class of duty to suit the actual applications.
Dafang provide double girder gantry crane solutions from 1 Ton SWL up to 800 Ton SWL (we also manufacture gantry crane designed according to client special requirement). Double girder gantry crane have more heavy capacity and higher work duty than single girder gantry crane.
Compared with single girder gantry crane, double girder gantry crane's capacity and span is larger, suitable for high work duty situation.
|Name||Lifting mechanism||Hoist traveling mechanism||Crane traveling mechanism|
|Motor||Wuxi Hongda||Wuxi Hongda||Boneng tree-in-one model|
|Reducer||Purui||Purui||Boneng tree-in-one model|
|Brake||Jiaozuo Changjiang||Jiaozuo Changjiang||Boneng tree-in-one model|
When gantry crane have cantilever, the design will add crane saddle to ensure structure's rigidity.
Each gantry crane have four pcs support legs, which connect gantry crane's main beam and ground beam.
When crane capacity or span is large, to reduce wheel load, need to use crane trolley trolley.
Ground beam connect the support legs and crane travel trolley.
Winch is most crucial mechanism for crane, which have reliable structure equipt with drum, motors, brake, and reducer.
To reduce crane wheel pressure, need to increase crane wheel, so need to use crane travel trolley.
Q235/Q345 carbon structural steel. Main beam with strong box type and standard deflection. The main weld line is maked by submerged-arc welding.
Crane design with U type, is it more convenience for large size goods from middle position move to cantilever without any dimensional limit of support leg, like gantry crane which used in the hydropower station with very large wheel gauge.
Crane usually equipped with lifting spreader, when the crane used for lift stoplog, lifting mechanism will be with two lift points.