An anti-falling safety rope device for high-speed railway bridge-erecting machine cross-span operation

Abstract

The invention discloses a high-speed rail bridge erecting machine crossing operation anti-falling safety rope device. The device comprises a high-speed rail box girder fixedly connected to the top surfaces of bridge piers, welding rings and steel strand safety ropes, wherein the welding rings and the steel strand safety ropes are symmetrically welded on two main beams of a high-speed rail bridge erecting machine, the high-speed rail bridge erecting machine is placed on the high-speed rail box girder, a foldable first column at the front section of the high-speed rail bridge erecting machine isconnected with the bridge piers, the steel strand safety ropes are wound around the high-speed rail box girder, the two ends of the steel strand safety ropes are correspondingly connected with the welding rings through safety rope connectors, four pulley blocks are correspondingly arranged at the positions, corresponding to the four corners of the high-speed rail box girder, of each steel strandsafety rope, each pulley block is composed of four pulleys, clamping strips are arranged at the two ends of each pulley block, anti-collision bags are arranged on the outer walls of each pulley, the anti-collision bags are filled with buffer materials, and arc-shaped rubber layers are arranged on the outer walls of the anti-collision bags. According to the high-speed rail bridge erecting machine crossing operation anti-falling safety rope device, the problem of potential safety hazards that the high-speed rail bridge erecting machine is forwards inclined and even collapses due to unstable voltage or power failure in the prior art is solved.

Description

technical field [0001] The invention relates to a dynamic construction safety device for civil construction engineering, in particular to an anti-falling safety rope device for cross-span operation of a high-speed railway bridge erecting machine. Background technique [0002] With the three-dimensional development of my country's high-speed railway network space, it is the general trend to adopt factory prefabricated high-speed railway box girders and on-site bridging frame girders to install bridge construction methods. Factory prefabricated box girders are fast in construction and relatively easy in quality control. Erection has become a key process of bridge construction. During the cross-span operation of the bridge erecting machine to the next pier, the No. 1 column of the entire bridge erecting machine is in a suspended state, and the bridge erecting machine encounters voltage instability or If the power is cut off, there will be a longitudinal acceleration in the forwar...

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Problems solved by technology

[0003] However, voltage instability will inevitably occur during the spanning process of the bridge erecting machine. If the running speed of the bridge erecting machine decreases, it will have a tendency to tilt forward longitudinally, which will bring safety hazards to the bridge erecting machine. The bridge erecting machine stopped suddenly, resulting in a huge acceleration, which caused the bridge erecting machine to generate a large longitudinal forward thrust under its own weight, resulting in the collapse of the bridge erecting machine. Several high-speed rail bridge erecting machines collapsed in China

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