The Working Precautions of the Bridge Building Crane

The Working Precautions of the Bridge Building Crane

With all of those things meeting the design requirements, the bridge building crane is allowed to walk longitudinally.
Before each girder is in place, the temporary support should be in both ends to make the large girder keep vertical and stable to avoid overturn and displacement. After the second girder is ready, the reinforcing steel of the two ends of the insulating steel of cross beam should be immediately welded except the temporary support to strengthen the stability.
Before the bridge-erecting crane walks longitudinally, the weld of the insulating steel of cross beam should be finished and the concrete should be placed in the insulating steel of cross beam.
The transvrsal walking rails of the front, middle and back triggers should be paralleled and the certain distances among them should be kept.
When there are the upper and lower longitudinal slopes, the preventing slipping measures should be taken when the bridge erecting crane displaces longitudinally.
The bridge erecting crane must lift objects to go on a run test after its’ assembly is finished. Alternatively, it can go on a run test with the concrete girder, after which the bridge-erecting crane can be in place and begin the assembly.
Only with everything ready, the bridge-erecting crane is allowed to walk longitudinally, which is asked to be finished in one time without stop in the middle way.