THE METHOD OF OBJECT MODELING IN THE DEVELOPMENT OF PATENTABLE DESIGNS OF TRACTION DRIVE MECHANISMS

2021 ◽  
Vol 2021 (3-4) ◽  
pp. 4-13
Author(s):  
Vladimir Vorob'ev ◽  
Aleksandr Pugachev ◽  
Stepan Kopylov ◽  
Evgeniy Nikolaev
Keyword(s):  
Electric Motor ◽  
Analytical Methods ◽  
Modeling Method ◽  
Rolling Stock ◽  
Object Model ◽  
Object Modeling ◽  
Typical Structure ◽  
Traction Drive ◽  
Maintenance And Repair ◽  
Technical Systems

Work objective is to develop a patentable design of locomotive traction drive mechanisms using the example of a suspension unit. Research methods: object modeling method, analytical methods for calculating dynamics of rolling stock. Research results and novelty: the design of the railway electric motor suspension unit, which will reduce costs in the course of maintenance and repair of a locomotive with a solid gear by increasing the reliability of the suspension unit parts, eliminating their wear, has been developed; a compensation coupling device has been devised. We will synthesize the object model of a technical system based on the identification of its typical structure by classifying technical systems. Conclusion: the application of the object modeling method together with the object model allows avoiding errors in the development of new designs of technical objects based on existing comparables and eliminates defects of the selected prototype. The use of the object modeling method makes it possible to synthesize patentable designs of the locomotive underframe mechanisms.

INVESTMENTS IN THE LOCOMOTIVE COMPLEX INFRASTRUCTURE. INFRASTRUCTURE NEEDS PLANS AND FORECASTS

2020 ◽  
Vol 1 (4) ◽  
pp. 106-110
Author(s):  
A. G. YEROYAN ◽  
Keyword(s):  
Significant Role ◽  
Rolling Stock ◽  
Infrastructure Development ◽  
Electric Locomotive ◽  
Maintenance And Repair ◽  
Technological Readiness ◽  
Railway Industry ◽  
Locomotive Repair

In connection with the prospects for the development of the railway industry until 2030, a significant role in improving the technological readiness of maintenance and repair of traction rolling stock belongs to diesel, electric locomotive repair and service depots. The article considers the main directions of development and modernization of the locomotive complex infrastructure. Possible methods of financing mechanisms for investment in infrastructure development have been identified.

An Assembly Process Model Involved Resource for Complex Products

2012 ◽  
Vol 268-270 ◽  
pp. 845-850
Author(s):  
Gang Sun ◽  
Yuan Li ◽  
Jian Feng Yu ◽  
Jie Zhang ◽  
Liang Dong
Keyword(s):  
Graph Theory ◽  
Process Planning ◽  
Process Model ◽  
Modeling Method ◽  
Assembly Process ◽  
Product Model ◽  
Typical Structure ◽  
Complex Products ◽  
3D Environment ◽  
Interactive Relationship

Fixtures, tools, and other assembly resources have an important role in the assembly of complex products, so it is very necessary to consider the interactive relationship between the resources model and the product model for assembly order planning in 3D environment. Firstly, the features of assembly process planning involved resources are analyzed. Secondly, the concept of the assembly process intention（AsmPI） is introduced，and an assembly process can be divided into an AsmPI sequence. Thirdly, based on the graph theory, a resource-involved assembly process model is built up. At last, setting a typical structure as an example, the validity of this modeling method is verified.

A structured object modeling method SOMM and its environment SOME

1996 ◽  
Vol 27 (11) ◽  
pp. 1-18 ◽  
Author(s):  
Minoru Harada ◽  
Takafumi Sawada ◽  
Terutada Fujisawa
Keyword(s):  
Modeling Method ◽  
Object Modeling

Analysis of technological preparation of enterprises for maintenance and repair of railcars

Innotrans ◽  
2020 ◽  
pp. 44-50
Author(s):  
Vasily F. Lapshin ◽  
◽  
Elena V. Zelyukova ◽  
Oksana A. Mironova ◽  
◽  
...  
Keyword(s):  
Scientific Organization ◽  
Rolling Stock ◽  
Car Industry ◽  
Factors Affecting ◽  
Maintenance And Repair ◽  
Technological Processes ◽  
Level Of Automation ◽  
Technological Preparation ◽  
Technological Documentation

The paper analyzes the technological preparation of production at the railcar enterprises in terms of developing technological processes and processing sets of technological documents. Factors affecting the quality of technological preparation of production for maintenance and repair of rolling stock are considered. In contrast to the previously performed works, where the assessment of the level of technological training was carried out by experts of a scientific organization, the initial data in the article were the results of a survey of specialists of technical departments of structural divisions of the car industry of the Sverdlovsk and South Ural Railways. Based on the method of expert qualimetry, the weight of factors that have the greatest impact on the quality of technological processes is estimated. As a result of the survey, a low level of automation of design processes was established, which consists mainly in the design of technological documentation. It is shown that the degree of depth of development and detail of technological processes is at the level of the route description

Maintenance and repair of rolling stock*

2008 ◽  
Vol 22 (9) ◽  
pp. 627-634
Author(s):  
V. Esposito ◽  
S. Nocchia
Keyword(s):  
Rolling Stock ◽  
Maintenance And Repair

Application of bidirectional isolated converters in a traction drive

2020 ◽  
pp. 67-77
Author(s):  
T. S. Titova ◽  
◽  
M. V. Evstaf’yeva ◽  
M. Yu. Izvarin ◽  
◽  
...  
Keyword(s):  
Output Voltage ◽  
Initial Conditions ◽  
Maximum Output Power ◽  
Practical Importance ◽  
Duty Factor ◽  
Rolling Stock ◽  
Maximum Output ◽  
Traction Drive ◽  
Bidirectional Converter ◽  
Electric Rolling Stock

Objective: Analysis of the operation of a bidirectional isolated converter for a direct-current traction drive of electric rolling stock under various load conditions. Methods: Mathematical modeling was applied for the research. The results are presented in the form of mathematical relationships and graphs of currents and voltages. Results: The relationship between the output voltage and the duty factor of a bidirectional isolated converter has been revealed. The converters operation is considered at six characteristic intervals of a full cycle with the following initial conditions: i(t0) < 0, i(t0) = 0, i(t0) > 0. The main dependences of the current in the inductance, the input and output voltage, the shape of the voltage and current curves for different operation modes of a bidirectional converter are given. The duty factor is determined to obtain the maximum output power of the bidirectional converter. Practical importance: The proposed bidirectional isolated converter scheme makes it possible to implement traction and regenerative braking modes for a traction drive of a DC electric rolling stock. The simulation results show that with significant changes in load the system retains the specified characteristics, provides speed

scholarly journals Methodology of adjusting the strategy of technical systems maintenance and repair according to the results of their operation

2021 ◽  
Vol 2131 (3) ◽  
pp. 032105
Author(s):  
V Gera ◽  
R Mosyagin ◽  
E Kalmykov ◽  
V Pudikov
Keyword(s):  
Support System ◽  
Actual State ◽  
Service Availability ◽  
Maintenance And Repair ◽  
Control Actions ◽  
Functional Scheme ◽  
Systems Maintenance ◽  
Service Object ◽  
Technical Systems ◽  
Scheme Analysis

Abstract In the publication the authors solve the problem of forming the optimal volume of control actions to maintain the technical systems (TS) service availability. To achieve the desired result the analysis of the TS as a service object was carried out. As a result of the analysis the system elements with a level of reliability below the required level are assigned to a separate group for which the maintenance modes are formed later, their actual state being taken into account. Namely, the decision is made what work on these elements can perform and what forces and means of the technical support system will be required for their operation. To form a list of necessary operations, the functional scheme analysis of the TS considered is carried out, during the analysis the functional as well as degradation characteristics of the system elements are determined as well as the significance (weight) of each element in the system. The analysis of the functional scheme of the TS is performed by using the functional-topological method.

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