Method for constructing steel truss over existing railway line and transporting, mounting and positioning bogie

Abstract

This is an installing method of joists stride-over existing rail and trolley for transportation, installation and orientation. 1. joist installing method: the joist is made into five sections including the main part, joist elbow and joist pillar and transported by crane, trestle and trolley to the position for fabrication. The trolley is in a position parallel to the trestle; two transfer beds move the joist main part via a rail to the trolley which then drives it to the fabrication site. After correcting axes, centerline and level, fabricate the joist elbows to the main part and joist pillar. 2. The trolley is a supporter on the rail with the top jointed through bolts to two vertical stride-over beams whose rail hold two transfer beds. The supporter is closed by armor plate on the side-beam of a platform in between the two vertical beams. A cab and electric control cabinet are installed in the middle to the right side of the supporter, and a ladder is installed to the right side of the supporter. Cable roller is to the right outside of the supporter. Two joist supporters are installed on the transfer beds for fabrication.

Description

technical field [0001] The invention relates to a construction method of a railway station reconstruction project, in particular to a method for constructing a steel truss across an existing railway line and a transport, installation and positioning trolley. Background technique [0002] At present, in order to meet the needs of people, in addition to new railway projects, the railway transportation industry also transforms existing railways and original railway stations. The construction method is: construction personnel use lifting equipment to carry out high-altitude hoisting and installation, which is very unsafe, especially when assembling above the contact grid of a railway with electric locomotives, it is more prone to serious accidents, and the quality of the truss structure is difficult to meet the technical standards. During the operation, it is necessary to apply to the railway department for train suspension, which causes huge losses to the national economy, and ...

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