Erecting machine is mainly composed of the main beam, cantilever, lower guide beams, front and rear legs, secondary leg, hanging beam traffic, jib cranes and electro-hydraulic system. Applies to three different single- span simply supported beam erection, high efficiency. this type of bridging machine capable of erecting lines, curves, etc. cross and longitudinal variations across the entire hole double track prestressed concrete box girder bridge machine in addition to the standard set up operations, but also to meet the first and last cross erection, erection curve, variable cross erected, span continuous beam, combined beam, continuous steel etc. existing bridge erection simply supported span continuous change and other conditions erection construction having simple bracket set, fixed lifting, lifting beam stability good, high efficiency, safety and reliability, variable cross- easy to adjust, easy to operate .
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