girder gantry crane

1. The single girder
Single girder gantry crane structure is simple, easy to manufacture and installation, small own mass, main beam mostly Partial rail box-shaped frame structure. Compared with double girder gantry crane,electric magnetic overhead crane the overall stiffness weaker. Thus, when the starting weight Q≤50t, time span S≤35m, can this form. Single girder gantry crane gate leg has L and C forms. L type of manufacture and installation convenience, the force was better, the smaller their own quality, but, lifting goods through space at the relatively small number of legs. C-shaped leg made inclined or curved shape, aimed at a greater horizontal space to make the goods pass foot.
2. The double main beam
Double girder gantry crane carrying capacity, span, good overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger, the cost is higher. Depending on the main beam structure, it can be divided into box beams and trusses in two forms. More commonly used box structure. [1]
Crane, mainly by the bridge, traveling mechanism, trolley, electrical equipment and other components. Depending on the frequency of use, it is divided into A5, A6 two operating levels.
main feature:
(1) bridge with box girder, automatic submerged arc welding.
(2) the use of the trolley beam track conductive cable conducting new device, safe and reliable.
(3) The lifting mechanism may also be provided in accordance with the requirements of the second set of security devices. Increase reliability.
(4) parts standardization, serialization, universal.
(5) control room unobscured, all institutions are in the control room to manipulate, manipulate flexible working comfort.