The double-beam gantry crane’s Girders and Frames are weld-together structures with no seam joints, with a high degree of vertical and horizontal stiffness. The travelling mechanism of trolley is electrically driven, the double-beam gantry crane can equipped with the grapples and other tools for lifting containers, which suitable for different usage.
The lifting capability of a double-beam gantry crane can be hundreds of tons, and it is used extensively in open-air storage areas, materials storage areas, cement plants, granite industries, building industries, engineering industries, railroad yards for loading and unloading freight. Double beam gantry crane is widely used in quite heavy duty lifting.
Double beam gantry crane are light and portable, using legs to hold bridges, slings, and lifts. In top-running designs, double-girder gantry cranes may allow for greater heights of lift because the hoist is suspended below the beam. They don’t require more materials for bridge beams and runway systems, so building support legs must take additional care. Double beam gantry crane is also considered where there is reason to not include a roof-mounted runway system, and are more traditionally used for open-air applications where complete beams and columns cannot be installed, or can be used under the existing bridge-crowning system.
Double-girder cranes typically require greater clearance above the cranes beam-level elevation, as the hoist trolley rides atop the bridge beams on the crane. The basic structure of a double beam gantry crane is that legs and wheels travel along the length of the ground beam system, with two girders fixed on the legs, and the hoist trolley suspends the booms and travels over the girders.