Heavy-duty railway maintenance and repair

The main maintenance work includes rail oiling, lubrication and grinding, turnout maintenance, replacement and supplementation of track bed ballast, roadbed, reinforcement and maintenance of bridges and tunnels, etc. For heavy-haul railways with heavy traffic, relying on manual road maintenance methods in the past can no longer meet the requirements, and modern detection and road maintenance technology must be adopted. These technologies are mainly reflected in the upgrading of modern road maintenance machinery and equipment. Currently, the road maintenance machinery commonly used in heavy-haul railways is divided into overhaul machinery, maintenance machinery, inspection machinery and repair machinery. Specifically, it is divided into large screen cleaning machines and supporting maintenance machinery, rail grinding vehicles, rail flaw detection vehicles, track inspection vehicles and other road maintenance machinery, as well as line tamping vehicles, ballast cleaning and screening vehicles, line power stabilization vehicles, and slope shaping vehicles. , turnout tamping trucks, line overhaul trucks, etc. The use of these equipment can greatly improve operating efficiency and maintenance quality, thereby improving the quality of the line and ensuring transportation safety.

The world's first track inspection vehicle was born in 1877. After a century of development and continuous improvement, the track inspection vehicle has become an important part of maintenance and repair equipment. Track inspection vehicles have also been continuously improved with the advancement of technology. Lasers, cameras, image processing, non-contact measurement, computer networks and wireless communications have given the inspection vehicles wings to take off. The most advanced track inspection vehicles can not only detect tracks , it can also detect equipment such as power contact lines, signals, and communications, and is called a comprehensive inspection vehicle. The line tamping machinery can automatically lift and adjust the track, and tamping the ballast to increase its density and increase the stability of the track. The ballast bed cleaning machine automatically digs out the dirty ballast and cleans it before backfilling the ballast bed. After the line is cleaned and tamped, the dynamic stabilizing vehicle can stabilize and compact the track bed, making the smoothness and stability of the line reach the state before maintenance