Modeling of operational reliability of running wheels of overhead cranes of seaports
DOI:
https://doi.org/10.34185/1562-9945-6-143-2022-07Keywords:
reliability, resource, wear, working time, power function, correlation coefficient, crane wheel, bridge crane.Abstract
Overhead cranes are widely in operation in sea and river ports for cargo transshipment in open and closed storage areas. Since they are the main link in technological processes, the productivity of Port production lines depends on their reliable and continuous operation. It is known that during the operation of cranes, 90% of the running wheels fail and are replaced with new ones due to intensive wear of the edges, and 60-70% of crane rails due to wear of their side faces. Since the service life is the main indicator of the durability of parts and assemblies, therefore, increasing the installation of wheel life is an urgent task, which will reduce the cost of repair and operation of cranes. As the experience of operation shows, running wheels have the most worn elements of movement mechanisms. Thus, their service life ranges from several months to 2-3 years. This is due to the fact that replacing the wheels is cheaper compared to replacing the crane track. Since the service life is the main indicator of the durability of parts and assemblies, therefore, increasing the installation of wheel life is an urgent task, which will reduce the cost of repair and operation of cranes. Analysis of studies of complex technical systems shows that the reliability of overhead crane mechanisms operated for more than 30 years in the Seaport is not fully understood, the nature of wheel damage depends on the operating conditions. For research, 4 identical overhead cranes with a lifting capacity of 10 tons were selected, which operate in Hook mode in seaports. Crane wheels are made of 65g steel by casting. Crane mechanisms were visually examined and wheel wear was measured after 3 months during 4 years of operation. Based on the research results, the parameters of the Wear model from time to time in the form of a step function are calculated. The obtained values of the correlation coefficient indicate that there is a fairly tight relationship between wear and operating time. The average error value for the proposed model does not exceed 6.1%, which is quite acceptable for engineering calculations. It is established that the service life of Crane wheels does not exceed 3.3...3.4 years of operation, which is less than 4 years specified by the manufacturer.
References
Hryhorov O.V., Petrenko N.O. Vantazhopidiomni mashyny: Navch. posibnyk. — Kharkiv: NTU «KhPI», 2005. — 304 s.
Strelbitskyi V.V., Yaremennko V.O. Analiz defektiv mostovoho krana vantazhopidiomnistiu 10 ton // The V International Science Conference «Trends in science and practice of today. October 19 – 22, 2021, Ankara, Turkey. – 2021. –
S. 453-454 .
Strelbitskyi V.V. Eksperymentalne doslidzhennia vplyvu napratsiuvannia na trishchynostiikist stalei mostovykh kraniv/ V.V. Strelbitskyi // Visnyk Khmelnytskoho natsionalnoho universytetu. Tekhnichni nauky. – 2020. – № 4. – S. 138–142.4. Qin, Li & Zhang, Bin & Li, Xinren & Huang, Zheng-qiu.. The Application Research on Safety performance Evaluation of Portal Crane based on Reliability Evaluation and risk Assessment. E3S Web of Conferences. Volume 257. - 2021. - pp.1-4.
Strelbitskyi V.V. Doslidzhennia vplyvu napratsiuvannia na dovhovichnist mekhanizmu peresuvannia mostovoho krana // The XXIV International Science Conference «About the problems of practice, science and ways to solve them», May 04 – 07, 2021, Milan, Italy. – S. 363-364.
Strelbitskyi V.V. Doslidzhennia vplyvu mekhanizmu peresuvannia na resurs metalokonstruktsii mostovykh kraniv morskykh portiv / V.V. Strelbitskyi // Visnyk Khmelnytskoho natsionalnoho universytetu. Tekhnichni nauky. – 2022. – № 3. – S. 249-253.
Strelbitskyi V.V. Eksperymentalne doslidzhennia vplyvu napratsiuvannia ta asymetrii tsyklu na trishchynostiikist stalei portalnykh kraniv / V.V. Strelbitskyi, O.O. Nemchuk // Visnyk Khmelnytskoho natsionalnoho universytetu. Tekhnichni nauky. – 2020. – № 1. – S. 245–248.
Slepuzhnikov Ye.D. Mekhanizmy peresuvannia mostovykh kraniv: monohrafiia / Ye.D.Slepuzhnikov, N.M. Fidrovska, I.S. Varchenko.– Kharkiv:NUTsZU,2019. – 124 s.
Tsybulskyi V.A. Optymizatsiia vlastyvostei materialiv khodovykh kolis mostovykh kraniv z metoiu pidvyshchennia yikh dovhovichnosti // Dys. … kand. tekhn. nauk : 05.02.01 / Tsybulskyi Vadym Anatoliiovych ; Kharkivskyi avtomobilno-dorozhnii instytut – Kharkiv,1996. – 197 s.
Aleinykov V.A. Sposob povыshenyia yznosostoikosty rebord kranovykh koles / V.A. Aleinykov, L.P. Kondratev // Podъemno-transportnaia tekhnyka y skladы. – 1992. – №2. – S. 25-27.
Horvat A.A., Molnar O.O., Minkovych V.V. Metody obrobky eksperymentalnykh danykh z vykorystanniam MS Excel: Navchalnyi posibnyk. Uzhhorod: Vydavnytstvo UzhNU “Hoverla”, 2019. – 160 s.
Nadiinist mashyn: Praktykum. / O.S. Hrynchenko, V.H. Kukhtov, O.I. Alforov, V.B. Savchenko, Ye.I. Kalinin, V.I. Ivanov, H.P. Yurieva; Za red. O.S. Hrynchenka, V.H. Kukhtova. – Kh.: TOV «Planeta-print» , 2018. – 140 s.
