Split guide beam type tunnel-passing bridge girder erecting machine

The present invention relates to a bridging machine, particularly relates to a separate tunnel through the guide girder bridge machine structure improvement. One kind of the split beam guide through the tunnel bridge machine, comprising a main beam and a lower guide beam is provided below the main beam, the lower beam guide is provided for successively guiding the front leg of the lower support beam, the legs and a rear leg; said main beam is provided for sequentially pulling said front leg and a traction means in the legs inverted, for the front support means for supporting the main beam, to be used for lifting from the front of the frame box girder after weighing device and a hoisting means, the support means for the main beam, the main beam for supporting the frame and can be a C-Box from which the legs and by the rear support means for supporting the main beam Accordingly, the present invention has the following advantages: a low beam carrying vehicle with the use of distance can be achieved tunnel, and the tunnel from the negative girder. Less disassembly can be achieved through the tunnel, the end of the first hole disassembly guide beam legs can be achieved through their own institutions.