First, normally, gantry cranes are divided into full gantry crane, semi-gantry crane, gantry crane with cantilever, gantry crane without cantilever. Their functions are as below:
Full-gantry crane: The main beam has no overhang, and the trolley is carried out within the main span.
Semi-gantry cranes: The height difference of the legs can be determined according to the site construction requirements.
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