Steel crane girder installation process description

       Single girder gantry crane crane beam preparation before installation: complete lifting steel columns, fixed on the basis of the corrected and go through preflight procedures. In the steel columns and column bracket on the side playing good crane beams, trusses central axis brake installed bit Ge lines and elevation lines; steel truss crane girder ends and the brake bomb good central axis.  steel crane  girder installation process:
    (A) single girder gantry crane steel crane girder installation, will be installed at both ends of the steel plate on the steel columns corbels, and mark the center of the crane girder installation bit Ge.
    (2) steel crane beam lashing generally use two symmetrical banding, at each end of the rope tied to a slip in traction when lifting and preventing collisions on steel columns.
    (3) steel crane girder lift, rotate single girder  overhead gantry crane  jib crane beam centerline rod so that the positioning of the axis aligned with corbels and pillars connected with flush bolts only after the release hooks .
    (4) steel crane beam correction, according to the plant expansion joints partition segmentation correction, or all of a crane girder is installed backward population correction.
    (5) Correction include: elevation, vertical, planar bit Ge (central axis) and span. In addition to the general elevation, shall be corrected in the steel columns and roof lifting completed and fixed after calibration, in order to avoid correction caused by lifting roof trusses span between steel column shift.
        Single girder  hoist gantry crane  quality control and inspection standards: Quality control of the master project and general project, master project refers to materials, components, fittings, equipment or construction projects play a decisive role construction quality inspection items, general project refers to the quality of construction will not achieve a decisive role in the test project.