According To The Structure Of The Door Frame
Apr 14, 2022
(a) Full gantry crane: the main beam has no overhang, and the trolley is carried within the main span. (b) Semi-gantry crane: The outrigger has a height difference, which can be determined according to the civil engineering requirements of the site. (c) Double cantilever gantry crane: a common structural form, the force of the structure and the effective use of the site area are reasonable. According to the main beam structure
(a) Single main girder gantry crane The single main girder cantilever gantry crane has a simple structure, is easy to manufacture and install, and has a small weight. The main girder is mostly an off-track box frame structure. Compared with the double main girder gantry crane, the overall stiffness is weaker.
Therefore, when the lifting weight Q≤50t and the span S≤35m, this form can be adopted. The single main gantry crane has two types of gantry legs: L-type and C-type. The L-type is easy to manufacture and install, has a good stress condition, and has a small weight. However, the space where the hoisted goods pass through the outrigger is relatively small. The legs of the C-type are inclined or curved in order to have a larger lateral space, so that the goods can pass through the legs smoothly.
