Concrete Foundation of Tower Crane
The under-frame is a crossbeam consisting of one whole beam and two half-beams. The slant beam is a square tube with two connection plates welded at two ends. High-strength bolts or pins joint crossbeam and four slant beams together so as to facilitate handling and transportation. The upper parts of four slant beams are connected with four main limbs of standard joints by clamp connections. (While installing the tower crane, before the jack-up set frame exceeds the height of hinge supports of standard joint slant beams, hinge supports and slant beams are not installed to connect standard joints so as to facilitate the installation of jack-up set frames and lower the height of whole machine installation. If the lifting height of equipment installation is sufficient, install quadric-hinge supports and quadric-struts first and then go on adding more joints. )
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