Supporting point external splicing corrugated steel web I-shaped steel concrete composite beam bridge girder erection machine

The utility model discloses a fulcrum external splicing corrugated steel web I-shaped steel concrete composite beam bridge girder erection machine. The bridge girder erection machine comprises a front supporting leg, a front crane car, a rear crane car, a middle supporting point, a rear supporting point, a longitudinal guide beam and a rear support, the front supporting leg, the middle supporting point, the rear supporting point and the rear support respectively correspond to the front end, the middle part and the rear end of the longitudinal guide beam; the front supporting leg corresponds to the pier top distribution beam, and the front crane car and the rear crane car are arranged at the upper end of the tail of the longitudinal guide beam. The special bridge girder erection machine has the advantages and beneficial effects that (1) the special bridge girder erection machine is modified from a common bridge girder erection machine, and the modification is simple and convenient; (2) the material consumption