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- Autors
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Strelbitskyi V.
- Issue
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Hoisting and transport equipment, 2025, №2(70)
- Pages
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47-56
- DOI
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10.15276/pidtt.2.70.2025.05
- Abstract
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Portal cranes play a crucial role in transshipment activities within maritime and riverine environments. As an essential component of the operational chain, the efficiency of port operations is closely tied to their dependable and uninterrupted functioning. Currently, over 88% of cranes in Ukraine's sea and river ports have surpassed their intended service life yet remain in use. The prolonged and intensive operational demands on these metal structures can result in fatigue-related defects, leading to component failures and potential accidents. Thus, prioritizing safe and efficient operations is critical when designing, modernizing, and managing cranes. A review of studies on the reliability of complex technical systems shows that the wear of gears of portal cranes, which have been operated in seaports for more than 35 years, has not been studied enough. The purpose of this study is to analyze the wear of the gears of the movement mechanism of portalcranes operating after their service life. 5 identical gantry cranes were selected for the research. The greatest wear of the working surfaces was recorded on the legs of the teeth, that is in places of maximum sliding, which completely coincides with the work of other researchers. The examination of the findings reveals that as the process continues, the level of wear escalates, nearing its upper limit. This data suggests that wear is affected not only by time elapsed, but also significantly by the operational stresses exerted on the material.
- Keywords
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Port handling machines, portal crane, mechanical wear, gears, experimental testing.
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