Gantry crane during installation main points to note

     Enhancing the overall process of steel girders A  gantry crane  unit method. Rigid leg and flex the legs together with improved beam upgrade in place to achieve the whole forming a gantry crane, safe, fast and reliable. Girder field splices, while hanging on the trolley and maintenance of lifting the beam, and then upgrade the tower erected, the use of advanced technology to enhance hydraulic synchronizing beam,Steel crane rigid legs staged installation, the flexible beam with improved leg structure and natural place. Beam upgrade in place after the completion of rigid bodies and flexible legs walking legs two legs tube device finalize the entire gantry structure of the device. The present invention uses two upgrade towers,bridge crane wind cable adjustment reduced, safe and reliable; rigid leg and flex the legs gradually improved as the beam in place, reducing the individual devices rigid legs and flexible legs workload; using the lift cylinder Zhang Lata shelf wind cable, cable wind force is accurate, easy to adjust.