Herald of the Ural State University of Railway Transport最新文献_第4页

Methods of definition of recuperative braking reliability on dc section 直流断面回收制动可靠性的定义方法

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2019-1-54-59

A. Pyshkin, D. V. Lesnikov

引用次数: 0

Heat transfer in boiling of water and emulsions in a minichannel 水和乳剂在小通道中沸腾时的传热

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2019-1-4-15

N. V. Bulanov, B. Gasanov

引用次数: 0

Performance improvement of a horizontal movement stop-limiter of 2ES6 series electric locomotive bogie 2ES6系列电力机车转向架水平运动限位器的性能改进

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2023-2-128-134

S. V. Savinkin

{"title":"Performance improvement of a horizontal movement stop-limiter of 2ES6 series electric locomotive bogie","authors":"S. V. Savinkin","doi":"10.20291/2079-0392-2023-2-128-134","DOIUrl":"https://doi.org/10.20291/2079-0392-2023-2-128-134","url":null,"abstract":"The article discusses and analyzes the reasons for reducing the operational life of a body suspension unit - the stop-limiter for horizontal movements of a bogie frame, currently used in the design of the mechanical part of most locomotives of the new series. It is demonstrated that during operation, the change in the regulated technological parameters of the stop-limiter occurs at a relatively low mileage of the locomotive, and the current repair technology does not provide for its prompt replacement due to design features. Based on the analysis of the mechanical properties of the materials used, the stress-strain state of a stop pin model was obtained when interacting with a thrust plate. The results of the calculation of the strength of the stop presented in the article show the predominance of plastic deformations in the contact spot with the thrust plate, which justifies the need to use materials with a higher yield strength to achieve a minimum safety factor. In this article, the possibility of improving the performance of the stop-limiter for horizontal movements of the bogie by improving its design and using materials with a higher yield strength is proposed and considered, its operation is described and the main advantages over its analogue are summarized, conclusions are drawn about the need to change the design in the conditions of a service locomotive repair depot.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121829346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Peculiar features of application of fiber-optic sensors for monitoring systems of railways 光纤传感器在铁路监控系统中的应用特点

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2023-2-77-83

V. Kudyukin

引用次数: 0

Harmonic composition of the traction network current as an identifier of the operating mode 牵引网络电流的谐波组成作为运行方式的标识

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2023-1-34-41

S. Makasheva

{"title":"Harmonic composition of the traction network current as an identifier of the operating mode","authors":"S. Makasheva","doi":"10.20291/2079-0392-2023-1-34-41","DOIUrl":"https://doi.org/10.20291/2079-0392-2023-1-34-41","url":null,"abstract":"The problem of accurate identifying emergency and normal operating modes of the AC traction network is an important aspect of protecting the traction power supply system of railway transport. The paper is devoted to the study of formation of the amplitude-frequency spectrum of the current of the contact network feeders during the transition process. On the basis of the field measurements carried out at the AC operating traction substations of the Far Eastern Railway, the analysis of the harmonic components of the current was performed. Full-scale measurements were carried out by a measuring and computing complex having a discrete Fourier transform function in its software. The study of changes in the amplitudes of the harmonic components of the current and their increments at short time intervals was carried out, on the basis of which their numerical characteristics are calculated. The distinctive features of formation of harmonic current spectra in the short-circuit mode and with a sharp increase in the load of the traction network are revealed. It is proposed to use the identified features of the harmonic composition of the current as an identifier of emergency and normal modes of operation of the traction network, which will improve its protection in the future.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"140 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114017722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the reliability of batteries on electric trains 提高电动列车电池的可靠性

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2022-2-41-52

A. Buynosov, A. A. Kozlova

{"title":"Improving the reliability of batteries on electric trains","authors":"A. Buynosov, A. A. Kozlova","doi":"10.20291/2079-0392-2022-2-41-52","DOIUrl":"https://doi.org/10.20291/2079-0392-2022-2-41-52","url":null,"abstract":"The issue of improving reliability of some components and parts of electric trains to reduce the number of unscheduled repairs, which contributes to improving the organization of maintenance of electric trains, is under study. The issues of violations in operation of technical means of electric trains are considered, the most unreliable components and parts that negatively affect the operation of motor-car rolling stock as a whole are identified. The main causes of premature failures of batteries as one of the most unreliable devices on electric trains have been established. The design, the principle of operation of the battery, its functions are given, the reasons for the premature failure of this unit are considered. As a method of increasing reliability of batteries, the authors propose the use of a device that can increase reliability of this node by eliminating the main causes of failures, explains the scheme and principle of operation of the proposed device, reveals the features of its operation. Special attention is paid to the adjustment characteristics of the proposed unit, its main functions and advantages in its use are revealed. It was found that with the increase in reliability of batteries, the number of unforeseen failures that contributed to the unplanned repair of electric trains is significantly reduced.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131227000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of optimal strategies in the program of customers’ loyalty 顾客忠诚度规划中最优策略的构建

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2019-4-4-11

D. Zavalishchin, A. Khazimullin

引用次数: 0

Development of a process model of the life cycle of wheelset axles 轮对轴生命周期过程模型的建立

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2023-1-90-98

A. Smolyaninov, V. Vasiliev, V. Ovsyannikov, E. Y. Rogov

{"title":"Development of a process model of the life cycle of wheelset axles","authors":"A. Smolyaninov, V. Vasiliev, V. Ovsyannikov, E. Y. Rogov","doi":"10.20291/2079-0392-2023-1-90-98","DOIUrl":"https://doi.org/10.20291/2079-0392-2023-1-90-98","url":null,"abstract":"The paper considers the issues of ensuring durability and quality of wheelset axles. It is shown that the solution to this problem involves the inclusion of all stages of the product life cycle, from design to repair and restoration. At the design stage, the solution is achieved through the use of promising brands of materials for wheelset axles, the assignment of optimal parameters of quality and accuracy, or resizing. It is shown that the most promising is to ensure optimal parameters of accuracy and quality of the executive surfaces of wheel-set axles at the stages of manufacture and repair (restoration). One of the most effective tools is the process approach. Models in the form of contextual diagrams based on the IDEF0 approach were used in this paper. The structural decomposition of the process of ensuring the quality and durability of wheelset axles at the stages of their life cycle is carried out, subprocesses which characterize the stages of the life cycle of the wheelset axis from the point of view of ensuring its quality are highlighted. The selected sub-processes were also divided into smaller components. On the basis of the hierarchy analysis method, directions for improving processes in terms of quality and durability were identified.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133294580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of feasibility of placing the parking space of passenger cars on the basis of simulation modeling 在仿真建模的基础上，对客车车位布置的可行性进行了评价

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2021-3-65-73

O. Kopylova, P. Mishkurov, A. Chetvergova

{"title":"Assessment of feasibility of placing the parking space of passenger cars on the basis of simulation modeling","authors":"O. Kopylova, P. Mishkurov, A. Chetvergova","doi":"10.20291/2079-0392-2021-3-65-73","DOIUrl":"https://doi.org/10.20291/2079-0392-2021-3-65-73","url":null,"abstract":"The article deals with the issues of assessing the development of parking systems of passenger cars in large cities based on the use of the simulation modeling method. With the help of AnyLogic software, a simulation model for evaluating the feasibility of parking space placement has been developed. The proposed simulation model simulates the movement of vehicles on a section of the road network (RN) and determines the number of cars that could not park due to the lack of parking spaces. Three calculators are built into the simulation model. The first calculator calculates the required number of parking spaces based on standard values, depending on the purpose of the object near which the parking space is planned. The second calculator allows you to determine the preliminary cost of the project, depending on the type of parking space. The third calculator evaluates the efficiency of the project, changes such indicators as the required number of cars, the average time spent by cars in the system under study, their average speed, the number of car stops. Using the developed model allows you to determine changes in the values of traffic flow indicators and choose the optimal type of parking space, based on a preliminary assessment of the expected economic effect.","PeriodicalId":118708,"journal":{"name":"Herald of the Ural State University of Railway Transport","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130325436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evolution of assymetric swirl upward flows adjacent to vacuum 真空附近不对称旋流向上流动的演化

Herald of the Ural State University of Railway Transport Pub Date : 1900-01-01 DOI: 10.20291/2079-0392-2020-1-4-10

S. Bautin, S. Deryabin

引用次数: 0