Arch ring lining trolley for additionally building open cut tunnel on electrified railway business line and construction method of arch ring lining trolley

Abstract

The invention provides an arch ring lining trolley for additionally building an open cut tunnel on an electrified railway business line and a construction method of the arch ring lining trolley. The arch ring lining trolley for additionally building the open cut tunnel on the electrified railway business line, which is provided by the invention, comprises a trolley, a walking device, a lifting device and an electricity preventing device; and the construction method comprises the steps of assembling the trolley by a joist, an arch frame and a template above a carrier cable and finishing actions like walking, lifting, insulating, arch ring construction and the like by the trolley above a side wall roof and a contact net; therefore, the operation difficulty can be reduced; moreover, because the line is required to be temporarily blocked and long-time stoppage is not needed in the processes of lifting the arch frame and mounting the electricity preventing device in the construction period, the normal operation of the railway is not interfered. In addition, because a slide rail is positioned on the top surface of the side wall, the trolley cannot intrude into a railway running gauge; and therefore, the safe distance requirements that a normal value of a clearance from a contact net electrified part to a fixed grounding article is not less than 50 cm while a difficult value thereof is not less than 30 cm, specified in the article 111 of No. [2007] 69 railway text in Contact Net Operation Maintenance Procedures of Ministry of Railways, can be satisfied; namely, good safety is obtained.

Description

technical field [0001] The invention belongs to the technical field of railway tunnel construction, and in particular relates to a trolley and a construction method for adding an open tunnel arch ring lining to an electrified railway business line. Background technique [0002] Electrified railways usually erect a row of "丨"-shaped catenary pillars on one side of the rail. The top of each catenary pillar is fixed with an insulator and a contact suspension through a support device. The contact suspension includes a force-bearing extending along the direction of the rail. Cables and contact wires, the bow head of the pantograph on the electric locomotive touches the contact wire in a sliding manner, and it relies on the pantograph to draw electricity from the contact wire as power to travel on the rails. When the above-mentioned electrified railway that has been put into operation is suddenly damaged by a landslide in a mountainous area, after repair, it is necessary to build ...

AI Technical Summary

Problems solved by technology

However, there are the following problems in using these existing arch ring lining trolleys on the railway operation line: because the above-mentioned walking slides are located on the ground, the trolleys will invade the railway boundary, which not only cannot meet the requirements of the Ministry of Railways "Catenary Operation and Maintenance Regulations "Tieyun [2007] No. 69 Article 111 stipulates that "the gap between the live part of the catenary and the fixed grounding object, the normal value is ≥ 50cm, and the difficult value is ≥ 30cm", that is, the safety is poor, and there will be hinder the normal operation of the railway

In addition, the formwork, arch frame and joist are assembled on the ground into a trolley, so that during construction, it is necessary to cross the catenary cable and place it in the position of the arch ring. Therefore, it is difficult to lift and the construction period is long, so it cannot solve the problem of railway operation. Contradictions with safe construction

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