U-shaped tunnel-crossing beam transporting vehicle with adjustable wheel track and beam-feeding method of U-shaped tunnel-crossing beam transporting vehicle

Abstract

The invention provides a U-shaped tunnel-crossing beam transporting vehicle with an adjustable wheel track and a beam-feeding method of the U-shaped tunnel-crossing beam transporting vehicle. The beamtransporting vehicle at least comprises a vehicle body, traveling wheel sets and a beam carrying trolley; the vehicle body comprises a middle beam located in the middle and two side beams located onthe two sides; a plurality of cross beams are arranged in the longitudinal direction of the middle beam in a penetrating mode at intervals; the two ends of the outer sides of the multiple cross beamsare connected to the lower ends of the side beams correspondingly, so that the U-shaped structure of the vehicle body is formed; the traveling wheel sets are located at the lower ends of the side beams of the vehicle body and detachably connected with the side beams of the vehicle body, and the lower ends of the side beams are provided with two supporting positions of the traveling wheel sets; andthe beam carrying trolley comprises a front beam carrying trolley body and a rear beam carrying trolley body which are detachably connected. Therefore, according to the U-shaped tunnel-crossing beamtransporting vehicle with the adjustable wheel track and the beam-feeding method of the U-shaped tunnel-crossing beam transporting vehicle, the space below the flanges of box girders is utilized to the greatest extent, the transporting height is decreased, the transporting requirement of the large-span large-tonnage box girders can be met, especially the requirements for tunnel-crossing transporting of the box girders can be achieved, the forward travelling range of the front trolley body is further expanded, and longitudinal stability when a front cart of a bridge erecting machine takes the girders is improved.

Description

technical field [0001] The invention relates to the technical field of beam transport vehicles, in particular to a U-shaped tunnel beam transport vehicle with adjustable wheelbase and a beam feeding method thereof. Background technique [0002] my country's high-speed railway mostly adopts the strategy of replacing roads with bridges. The prefabricated box girders of high-speed railways are mainly prefabricated with simply supported box girders with a span of 32m. With the increase in the scale of high-speed railway construction, the construction of high-speed railways in the western mountainous areas and eastern coastal areas has increased year by year. In these areas, the high-pier bridges with high-speed railways crossing rivers and valleys, and the deep foundation bridges in areas with soft foundation subsidence, the cost of the substructure is in the bridge The proportion of the construction cost is relatively large, and the large-scale use of simply supported box girde...

AI Technical Summary

Problems solved by technology

Compared with the previous 32m-span box girder, this box girder has the characteristics of larger span, wider width, higher height, and heavier weight. On the other hand, since the end face size of the tunnel remains unchanged, it is necessary to carry the box girder and bridge erecting machine through the tunnel on a beam truck. Restricted by the end face of the tunnel, it is extremely difficult to design the matching low-level beam transport vehicle for carrying the box girder

At present, the structure form of the lowest beam-carrying vehicle for tunnels with a span of 32m cannot meet the needs of transporting beams in tunnels. Therefore, it is necessary to design a new type of beam-carrying vehicle to solve the requirements for carrying large-span and large-tonnage simply supported beams.

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