Gantry Crane

The single main girder gantry crane has a simple structure, is easy to manufacture and install, and has a small mass. The main girder is mostly a box-girder structure with an offset rail. Compared with double main girder gantry crane, the overall stiffness is weaker. Therefore, this form can be used when the lifting capacity Q≤50t and the span S≤35m. Single girder gantry crane support legs are available in L-type and C-type. The L-type is easy to manufacture and install, has good stress resistance, and has a small mass. However, the space for lifting goods to pass through the legs is relatively small. The C-shaped legs are made in an inclined or curved shape to create a larger lateral space so that goods can pass through the legs smoothly.