Bridge girder erection machine capable of passing through tunnel and realizing girder erection and bridging process thereof

Abstract

The invention relates to a bridge girder erection machine capable of passing through a tunnel and realizing girder erection and a bridging process thereof. The bridge girder erection machine comprises a mainframe and a lower guide beam, the mainframe comprises a main beam, and also comprises a rear ground jack, a rear guide beam overhead travelling crane, a rear crane trolley, a front crane trolley, a front ground jack, an auxiliary travelling ground jack and a front guide beam overhead travelling crane which are arranged successively from the rear end to the front end of the main beam; a track is arranged on the main beam, and the front crane trolley, the rear crane trolley, the front guide beam overhead travelling crane and the rear guide beam overhead travelling crane run on the track; the lower guide beam comprises a main beam of the lower guide beam, a rear ground jack arranged behind the lower part of the main beam, and a front ground jack arranged in front of the lower part of the main beam; the bridge girder erection machine and the bridging process can realize bridge girder erection and beam erection operations in mountain areas; a mode of mixed beam taking by the crane trolleys of the bridge girder erection machine, a beam transporting vehicle and a pack trolley can realize beam erection at a tunnel portal; and when passing a tunnel, a plurality of components can be retracted and folded to enable the bridge girder erection machine to pass through the channel conveniently without being limited by the diameter of the tunnel, and the bridging construction efficiency is high and the bridging operation is stable.

Description

technical field [0001] The invention relates to a bridge erecting machine capable of passing through tunnels and erecting girders at tunnel entrances, in particular to a bridge erecting device for rapid construction in mountainous areas, and in particular to a new bridge erecting machine for passing through tunnels and erecting beams at tunnel entrances. Background technique [0002] With the further strengthening and development of my country's infrastructure, the construction of various infrastructures is entering a rapid and steady development stage. The "Eleventh Five-Year Plan" of railways shows that China's railways have entered a stage of leapfrog development, especially since the economic crisis. my country has increased investment in infrastructure such as railways and highways, and railway construction will reach an unprecedented peak. As my country's railway construction enters a stage of continuous and rapid development, a key problem to be solved in the aspect of...

AI Technical Summary

Problems solved by technology

[0013] 1. The above 1 and 3 cannot complete the opening of the beam;

[0014] 2. The above 1, 2, and 3 all need to be disassembled to pass through the tunnel;

[0015] 3. The construction efficiency of the above 4 is very low, and the guide beam requires high stability

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