Mechanical replacement and laying construction method for ballast turnout

Abstract

The invention relates to a mechanical replacement and laying construction method for a ballast turnout. The method comprises the steps of selecting a turnout pre-laying position, transporting the turnout, replacing and laying the turnout within blocking time, treating new and old stone ballasts, welding the turnout and the like. According to the method, the whole set of turnouts are pre-laid outside the blocking time, and the method is implemented within the blocking time as follows: the whole set of turnouts are transported to the vicinity of a turnout replacing and laying area by adopting turnout replacing and laying equipment, old turnouts are dismantled and moved away, ballast beds are excavated, old stone ballasts are removed and transferred, the ballast beds are leveled, new turnouts are laid, tamping and stabilizing are performed, the turnouts are finely adjusted, and finally turnout welding is completed until a line is opened. According to the invention, the turnout changing and paving quality is improved, the overall construction time is saved, the blocking construction frequency is reduced, the construction can be flexibly carried out according to the blocking time, the mechanization degree is improved, the construction safety risk and the labor intensity are reduced, meanwhile, the material and manpower consumption is reduced, and the cost is saved for the turnout changing and paving construction.

Description

technical field [0001] The invention relates to a method for laying ballasted turnouts of railways, in particular to a construction method for mechanized laying of ballasted turnouts of sizes 18 and below. Background technique [0002] At present, the replacement of No. 18 ballasted turnout in China is still based on the traditional manual method. Build a turnout assembly platform before the blockade time to pre-pave the turnout parts, but it is difficult to guarantee the dimensional accuracy of the turnout by building the assembly platform method; Purely manual construction requires long-distance longitudinal movement and multiple lateral movements. During the longitudinal and lateral movements, the small pulley block has to be disassembled and assembled many times and sometimes falls off, which increases the difficulty of construction. More importantly, this laying method is likely to cause turnouts. The laying quality does not meet the requirements of technical specifica...

AI Technical Summary

Problems solved by technology

However, this invention still adopts small-scale equipment such as road lifters, skateboard flatbed trucks, etc. to carry out the overall sliding and inserting of the entire set of turnout rails pre-assembled in advance, and still adopts a purely manual construction method for the turnout during the sliding process. Therefore, there are still technical defects that the construction accuracy cannot be guaranteed, and the risk of irreversible permanent deformation of the turnout rail row is likely to be caused, especially in the treatment of old turnouts and stone ballast. , multiple construction steps need to be completed manually

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