Quick track slab replacing system and method for slab-type ballastless track

Abstract

The invention discloses a quick track slab replacing system for a slab-type ballastless track and a quick track slab replacing method for the slab-type ballastless track. The replacing system comprises a steel rail jacking device, a track slab jacking device, a track slab translation device, a track slab placement tray, track slab transportation equipment and track slab hoisting equipment. The replacing method comprises the following steps of jacking an upper steel rail of a to-be-replaced track slab to a certain height, jacking the track slab by utilization of a span jacking device, moving the track slab out of a steel rail range and placing the track slab on the tray by utilization of the track slab translation device, moving the to-be-replaced track slab away, placing a new track slab on the tray and moving the new track slab into the original track slab position in place by utilization of the hoisting equipment, and finally restoring the limitation of the track slab and the bonding between the track slab and a filling layer. The replacing system and the replacing method disclosed by the invention are used for replacing the track slab for maintenance of a high speed railway, have the advantages of adoption of light and convenient tooling, simplicity in operation and high construction efficiency without damaging the steel rail, and are especially suitable for construction in a high-speed railway skylight period.

Description

technical field [0001] The invention belongs to the technical field of maintenance and repair of slab-type ballastless track for high-speed railways, and in particular relates to a system and method for quickly replacing track slabs of slab-type ballastless track. Background technique [0002] In recent years, high-speed railways have developed rapidly. In my country, high-speed railways mainly adopt the ballastless track structure, and the slab ballastless track structure is the most widely used, and the construction scale is huge. The slab ballastless track mainly has three types of track structures: CRTS Ⅰ, Ⅱ, and Ⅲ, which are mainly composed of steel rails, fasteners, track slabs, cement asphalt mortar (or self-compacting concrete) filling layers, and concrete bases (or supporting layers). Among them, the track slab is a prefabricated reinforced concrete structure in the factory, which is installed and positioned on site. It is connected with the filling layer of cement...

AI Technical Summary

Problems solved by technology

On the one hand, this method needs to cut the rail, and then weld the rail, which increases the welded joints of the rail, and causes relatively large damage to the original seamless line rail; Complicated, time-consuming, low efficacy of board replacement, and high risk of construction at the skylight point

[0005] In view of the disadvantages of cutting the rails to replace the track slabs, the experimental research on the replacement process tooling of the track slabs within the skylight time has been carried out at home and abroad without cutting the rails, but it is still in the stage of experimental development. Among them, the patent "a slab ballastless track Track slab replacement device and replacement method (201310108682.3)", which provides a slab-type ballastless track track slab replacement device and replacement method without cutting the rails, and does not involve the new track slab and the original filling layer mortar (or concrete) Adhesive recovery or close-bonding state control technology, and there are many on-site installation tools, which are heavy and inconvenient for skylight construction; and the patent "a subway board replacement vehicle and a board replacement unit including the subway board replacement vehicle (201420251605.3)" The equipment used is large-scale and complicated. Once the equipment failure occurs during the skylight operation, it is difficult to deal with, and it will directly affect the punctual opening of the line. In addition, this patent is not suitable for the replacement and repair of the ballastless track slab of the high-speed railway.

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