Bridge erecting machine for small-curve railway box girder

Abstract

The invention belongs to erecting equipment for railway box girders, and in particular relates to a bridge erecting machine for a small-curve railway box girder, which solves the problem that the conventional bridge erecting machine cannot meet the requirement of the erection of the small-curve railway box girder. The bridge erecting machine for the small-curve railway box girder comprises a box-shaped girder which is arranged on a front outrigger, an auxiliary outrigger and a back outrigger, wherein the bottom of the back outrigger supports on back outrigger trolleys; the fronting end of the box-shaped girder is connected with a cantilever beam; both sides of the width of the cantilever beam are provided with longitudinal overhead rails; a cantilever crane is arranged on the longitudinal overhead rails; the cantilever crane comprises a longitudinal movement mechanism and a horizontal movement mechanism; the horizontal movement mechanism comprises a horizontal movement rail frame; a bogie is arranged on the horizontal movement rail frame, and the horizontal movement quantity of the bogie is delta= SL / R; the back outrigger and the auxiliary outrigger are provided with a vertical hinge mechanism; and the two back outrigger trolleys are provided with differential mechanisms. The bridge erecting machine has the advantage that a wide structure of the horizontal movement mechanism of the cantilever beam is matched with the vertical hinge mechanism of the back outrigger and the auxiliary outrigger and the differential mechanisms of the two back outrigger trolleys to realize the erection of the small-curve box girder with a 500-meter curvature radius.

Description

technical field [0001] The invention belongs to railway box girder erecting equipment, in particular to a small curved railway box girder bridge erecting machine, which can realize the erection of small curved box girders with a curvature radius of up to 500 meters. Background technique [0002] At present, in the design of foreign high-speed railways, in order to ensure the safety of high-speed traffic, the radius of curvature of the line is generally more than 2000m. However, there are a large number of small curved bridges in the design of domestic intercity railways. For example, there are prefabricated beams with a radius of curvature of 500m in Haikou City on the East Ring Railway in Hainan, and prefabricated beams with a radius of curvature of 600m in the intercity railway from Chengdu to Dujiangyan. [0003] Existing bridge erecting machines usually include a box-shaped main girder installed on the rear outrigger and front outrigger with a trolley; Hanging beam cran...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing bridge erecting machine cannot meet the requirements for erecting small curved railway box girders, the present invention provides a small curved railway box girder bridge erecting machine, which can realize the erection of small curved box girders with a radius of curvature up to 500 meters

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