A lower guide girder bridge erecting machine and its whole machine passing through tunnel method

Abstract

The invention discloses a lower guide beam bridge girder erection machine and a method for the complete machine passing through a tunnel. The bridge girder erection machine is characterized by being provided with a folding type lower guide beam, wherein the folding type lower guide beam is of a box-shaped splicing structure and is divided into 3-5 sections of box beams. The first section is the folding section which comprises a left folding beam and a right folding beam, and the left folding beam and the right folding beam are arranged in parallel. Two through holes are formed in the top of the first section of the folding type lower guide beam, two through holes are formed in the top of the second section of the folding type lower guide beam and two through holes are formed in the top of the last section of the folding type lower guide beam, and the through holes are used for enabling a hanging beam crown block on the folding type lower guide beam to hoist the lower guide beam. The rear end of the left folding beam and the rear end of the right folding beam are respectively hinged to the front end of the second section of the box beam, and the front end of the left folding beam and the front end of the right folding beam are connected together through docking bolts. The left folding beam and the right folding beam can be respectively and horizontally folded towards the two sides of the lower guide beam and drawn close through pulling force of a winch arranged inside the third section of the box beam. The lower guide beam bridge girder erection machine is simple in structure and wide in application scope; the complete machine can pass through the tunnel or a culvert one time when a beam transporting vehicle is used for carrying the bridge girder erection machine, and therefore the bridge girder erection machine is simple, convenient and safe to operate, the time for passing the tunnel is saved, and the bridging efficiency is obviously improved.

Description

technical field [0001] The invention relates to the technical field of bridge erection, in particular to a lower guide girder bridge erecting machine and a method for the whole machine to pass through a tunnel. Background technique [0002] Since the beginning of high-speed railway construction in my country, most areas have been covered by high-speed railways. Only the construction of high-speed railways in the southwest region is relatively lagging behind. The reason is due to its complex geographical environment (mountainous, multi-tunnel). However, due to the limitations of the existing lower guide girder bridge erecting machine due to its own size and the clearance of the tunnel and the space size of the tunnel mouth, when passing through the tunnel, it is necessary to carry the beam erecting machine and the lower guide beam on the back of the beam transporter to pass through the tunnel alone, and the bridge erection machine is as follows: It is very difficult to start...

AI Technical Summary

Problems solved by technology

When the bridge erecting machine passes through the tunnel, it only needs to fold its lower guide beam so that it can be stored in the belly of the bridge erecting machine, and the whole bridge erecting machine can be carried by the beam transport vehicle through the tunnel at one time, which solves the problem of lower The problem that the guide girder bridge erecting machine cannot pass through the tunnel as a whole machine saves working time and improves work efficiency and safety

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