What is brief introductions of auxiliary support leg of bridge girder launcher?

Auxiliary support leg is main load-bearing and driving parts as HZQ900t bridge girder launcher crosses piers, as auxiliary lifting point as moving guide beam longitudinally

HZQ900t bridge girder launcher

Auxiliary support leg is made up of cross girder, fixed section, telescopic section, jacking oil cylinder, moving wheels and hanging wheels, it is connected with main girder of the bridge girder launcher by cross girder. Out dimension (length x width x height) 8.827m?5.415m?1.119m, weight 18t

Two jacking oil cylinders connect fixed section and telescopic section, adjust the height of the support leg. Telescopic section is connected with spherical core plate by one pin, it support on the moving trolley

As the bridge girder launcher crosses piers, bottom moving system of auxiliary support leg moves along the upper rail of guide beam, rear leg moves along temporary rail on the upper part of girders installed; auxiliary support leg and rear leg moving system works at the same time to finish crossing piers