A decision algorithm of wheel-set upping repair strategy of railway vehicle under the condition of no wheel drop

Abstract

The invention discloses a decision-making algorithm of wheel-set updating repair strategy of a railway vehicle under the condition of no wheel dropping, which comprises the following steps: (S10) adopting an economic decision-making algorithm of a single wheel-set to determine the optimal updating repair scheme of each wheel-set of a single carriage; (S20) respectively evaluating the safety of each bogie wheel with one bogie as a whole, and judging whether all the safety evaluation values are within the safety threshold value; (S30) judging whether the state makes the train safe according to the overall service performance requirement of the train compartment, and if so, determining the optimal updating and repairing scheme of all wheelsets of the single train compartment. As the car is taken as a whole and the wheelset is taken as a unit, the invention comprehensively designs and repairs strategy decision, from the viewpoint of economy and safety, this paper puts forward the principleof optimizing parameters of updating repair, and gives the optimal scheme of updating repair of wheelset by comparing and selecting updating repair template library, which can effectively solve the problem of human factors influencing decision, over-updating repair and parameter substandard after updating repair, so as to improve the efficiency of overhaul operation and save the maintenance costof wheelset.

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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