Abstract
The paper considers the principles of technology of scheduled preventive repair of equipment, as well as the principles of repair taking into account the technical condition of locomotive equipment. The main goal of the study is to justify the mechanism for optimizing the repair cycle of locomotives in order to ensure high reliability of the equipment at the lowest costs. For the organization of the strategy of maintenance and repair of the locomotive fleet according to the scheduled preventive repair method and the method taking into account the technical condition, an algorithm for the target function of the time between overhauls has been developed, taking into account the gradual and sudden failures of the locomotive equipment. A description of the model of gradual failures and the target function including the values of mileage and tolerance is given. The results of the study formulated a more universal algorithm of the target function for determining the values of the standard operating time of the assembly unit subjected to both gradual and sudden failures in operation, which includes an analysis of the errors of the first and second kind in diagnosing the object, the probability of replacement and failure detection, and economic indicators.This algorithm is adapted to the repair cycle consisting of three types of repair: the current repair CR, the medium repair MR, and the overall repair OR. It has been established that when optimizing the repair cycle of locomotives while simultaneously taking into account both gradual and sudden equipment failures, a reduction in the number of unscheduled repairs reaches 10-15%, the number of scheduled repairs is reduced by 12-18%.
Highlights
IntroductionThe priority task for the growth of traffic volumes, improving their quality indicators, increasing the reliability and efficiency of the traction complex is the acquisition of locomotives with improved technical characteristics and locomotives of new generation.Savings of operating costs from the acquisition of such traction rolling stock are achieved by improving the coefficient of technical readiness, reducing the duration and changing the https://doi.org/10.10 51/matecconf /201823901029 structure of the repair cycle, increasing the reliability of locomotives, reducing the specific consumption of fuel and energy resources, and increasing the productivity of locomotive crews in comparison with locomotive analogues.The main direction of improving the maintenance and repair system (M and R) is to increase the reliability of the rolling stock during overall repairs with deep modernization of the units, the introduction of new technological solutions, the non-admittance of equipment operation beyond the established tolerances, and the control of technical condition of the units in operation
The management of the technical state of electric locomotives and diesel locomotives in order to maintain it at a given level is one of the most important tasks of the locomotive economy and railway transport in general
The purpose of this study is the target function of optimizing the repair cycle with the application of criteria for minimum costs and maximum failure-free operation associated with the time between overhauls before the current CR, the medium MR, and the overall OR repair types
Summary
The priority task for the growth of traffic volumes, improving their quality indicators, increasing the reliability and efficiency of the traction complex is the acquisition of locomotives with improved technical characteristics and locomotives of new generation.Savings of operating costs from the acquisition of such traction rolling stock are achieved by improving the coefficient of technical readiness, reducing the duration and changing the https://doi.org/10.10 51/matecconf /201823901029 structure of the repair cycle, increasing the reliability of locomotives, reducing the specific consumption of fuel and energy resources, and increasing the productivity of locomotive crews in comparison with locomotive analogues.The main direction of improving the maintenance and repair system (M and R) is to increase the reliability of the rolling stock during overall repairs with deep modernization of the units, the introduction of new technological solutions, the non-admittance of equipment operation beyond the established tolerances, and the control of technical condition of the units in operation. The priority task for the growth of traffic volumes, improving their quality indicators, increasing the reliability and efficiency of the traction complex is the acquisition of locomotives with improved technical characteristics and locomotives of new generation. Savings of operating costs from the acquisition of such traction rolling stock are achieved by improving the coefficient of technical readiness, reducing the duration and changing the https://doi.org/10.10 51/matecconf /201823901029 structure of the repair cycle, increasing the reliability of locomotives, reducing the specific consumption of fuel and energy resources, and increasing the productivity of locomotive crews in comparison with locomotive analogues. The main direction of improving the maintenance and repair system (M and R) is to increase the reliability of the rolling stock during overall repairs with deep modernization of the units, the introduction of new technological solutions, the non-admittance of equipment operation beyond the established tolerances, and the control of technical condition of the units in operation. The purpose of this study is the target function of optimizing the repair cycle with the application of criteria for minimum costs and maximum failure-free operation associated with the time between overhauls before the current CR, the medium MR, and the overall OR repair types
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