A Decision-Making Algorithm for Wheelset Repair Strategy of Railway Vehicles under the Condition of No Wheel Dropping

Abstract

The invention discloses a decision-making algorithm for a wheel-set repairing strategy for a railway vehicle under the working condition of no wheels falling, which includes (S10) adopting a single-wheel-set economical decision-making algorithm to determine the optimal repairing of each wheel-set of a single carriage scheme; (S20) take a bogie as a whole to carry out safety evaluation on each bogie wheel respectively, and judge whether all safety evaluation values ​​are within the safety threshold; (S30) judge whether the state of the train is If it is safe, then determine the optimal turning repair plan for all wheelsets of the single carriage. The present invention takes the car as a whole and the wheel set as a unit to comprehensively design the turning repair strategy decision, proposes the optimization principle of turning repair parameters from the perspective of economy and safety, and gives the wheel set repairing strategy by comparing and selecting the turning repair template library The optimal scheme can effectively solve the problems of human factors affecting decision-making, overturning and substandard parameters after turning, and achieve the purpose of improving the efficiency of maintenance operations and saving wheel set maintenance costs.

Description

technical field [0001] The present invention relates to railway vehicle wheel maintenance technology, specifically, it is a kind of railway vehicle for railway locomotives, subways, high-speed EMUs, etc., which mainly implements non-falling wheel repairing and repairing, and comprehensively considers the safety and economy of the whole vehicle. A permanent repairing strategy decision-making algorithm. Background technique [0002] The turning repair of railway vehicles is an important means to restore the wheel status and ensure the wheel-rail contact relationship. Different models have different turning repair systems according to different operational safety requirements and service conditions. [0003] EMUs and high-speed passenger trains require the highest level of operational safety for railway vehicles, and their wheel sets are repaired with a fixed mileage plan, and the whole train is repaired without dropping wheels at a time of about 200,000 to 300,000 kilometers. ...

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Problems solved by technology

[0007] (1) There is a lack of standards and basis for parameter maintenance thresholds. Operators mainly set turning repair parameters based on experience, and it is difficult to evaluate the rationality of turning repair plans;

[0008] (2) At present, wheel turning machine tools generally lack scientific and systematic decision-making algorithms. The turning repair process is greatly affected by the experience of technicians, and the phenomenon of excessive turning repair is serious, resulting in fast scrapping of wheels and high maintenance costs; according to statistics, more than 70% of wheels All the wheel diameter loss is repaired by turning, and the wear of the wheel diameter during the operation of the vehicle is less than 30%. The research on economic turning repair is of great value.

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