The Assembly of the Main Beam of the Bridge Building Crane

The Assembly of the Main Beam of the Bridge Building Crane

The assemble of the main beam
1.The placing of the front part of the beam: the sleeper ground beam that should be the same height with the middle supporter. The front part of the beam should be placed on the middle supporter or sleeper.
2.Assemble the beam in order：Another group of the sleeper should be set. Two pieces of the beam should be connected with the pins. Then the former group should be removed to set another group of sleepers, which should be repeated to assemble each beam in order.

The safe and technical requirements of this step:
1.The main beam is the most import part of the bridge building crane. Each piece of the beam is about 7.5t. The two ends of the main beam should be lifted by the steel wire rope in balance to avoid the overturn of the main beam.
2.The sleepers should be level. The base should be wider than the main beam.