When railway fasteners are severely corroded by rust, severely deformed or even broken, etc., these long-accumulated problems belong to major repairs and should be replaced in sections to meet the original standards or higher standards. Intermediate repair refers to problems that have gradually accumulated over time after major repairs, but do not require frequent repairs. Its maintenance and renewal cycle depends on the service life of the accessories. With the management reform and system changes of the railway, the middle repair will be gradually cancelled.
Railway can be said to be the main part of transportation. Railway is the mode of travel and transportation that most people will choose now. The railway transport volume is larger, the price is lower, and the cost is effectively reduced. All walks of life are more willing to choose railways to meet demand. At present, with the rapid development of railways, the maintenance responsibility is also increasing. To be guaranteed, it is necessary to do a good job of maintenance in a timely manner.