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Ensuring the efficiency of the system of technical maintenance and repair of transport and technological machines

Holotiuk Mykola, Shymko Andrii, Martyniuk Victor, Shovkomud Oleksandr

Archiwum Motoryzacji

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2023

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Vol. 99, nr 1

5--17

EN

Current situation with the fleet of transport and technological machinery in Ukraine requires an individual approach to evaluating the effectiveness of its maintenance and repair system. The article is devoted to the issue of selecting the most effective option for the use of transport and technological machinery taking into account the specific conditions of its operation characterized by certain risks and uncertainties, and considering the real volumes and age structure of the fleet. Solving this problem requires substantiation of management models of maintenance and repair processes. It is necessary to provide scientifically based methods of managing the system of technical maintenance (TM) and repair of transport and technological machinery (RTTM) using specific methods of an individual approach to the technical and economic evaluation of the effectiveness of maintenance and RTTM processes which are adapted to the modern conditions of its operation. The article presents the results of the research, which was carried out using the basics of system analysis, the theory of decision-making under the conditions of uncertainty, and the basics of multi-criteria analysis. In the course of research, an analytical management model of the maintenance and repair system operation was formed that reveals the sequence of implementing the management methodology, which makes it possible to assess its state in successive discrete states, to promptly take into account the effect of external influencing factors and make corrections, which, in turn, allow increasing the validity of strategic decisions aimed at increasing the effectiveness. A numerical calculation was performed, which allowed us to conclude that the value of maintenance intervals has a significant impact on the indicator of effectiveness. Adjusting this value makes it possible to optimize maintenance and repair processes.

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The monitoring results of accessibility of the transport environment for people with disabilities living in the city of Rivne

Nalobina Olena, Bundza Oleh, Holotiuk Mykola, Markova Olga

Archiwum Motoryzacji

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2020

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Vol. 87, nr 1

5--18

EN

This work is the result of research carried out by an initiative group in the city of Rivne to assess the accessibility of the transport environment for people with disabilities. The rights of people with disabilities to access transport services were researched by studying the accessibility of vehicles for people with disabilities. The monitoring was carried out by means of questionnaire method, conducted survey, registration (observation) and expert evaluation. The questionnaire was attended by 100 people, among them: disabled people with diseases of the musculoskeletal system (20 people); visually impaired people (28 people); hearing impaired people (22 people); parents of children with cerebral palsy and autism (30 people). The monitoring results are presented in the form of graphs, tables and diagrams. Based on the expert assessment, a summary table of recommended indicators for evaluating the accessibility of transport system elements was obtained. A list of priority measures was proposed to create an accessible urban transport environment. The results of the monitoring are the basis for further investigation of the problem of transportation of people with disabilities.

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Simulation of dynamic loads in elastic system heap machines

Holotiuk Mykola, Gavrysh Volodymyr

Zeszyty Naukowe WSEI. Seria Transport i Informatyka

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2016

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T. 6, nr 1

9--26

EN

In this article the change of dynamic loads in elastic systems of the car is underlined. Simulated dynamic load dump elastic system by changing the external resistance as a function of speed that reduces the dynamic loads and reduce power inputs workflow are under rsearch.

PL

Przedstawiono badania systemów dynamicznych maszyn rolniczych. Systemy mechaniczne posiadają właściwości tłumienia drgań i wibracji wskutek obecności tarcia wewnętrznego w parach kinematycznych. Zjawisko tłumienia drgań następuje częściowe rozproszenie energii drgań i przemiana w energię cieplną. W referacie przedstawiono model podatnego układu roboczego maszyny rolniczej przy zmianach zewnętrznych obciążeń w funkcji prędkości, co pozwala na zmniejszenie obciążeń dynamicznych mechanizmu roboczego maszyny