As the main equipment of channel and port construction, the reliability of dredgers has a significant effect on providing the frequent and regular maintenance for the marine transport systems. However, the dredger is prone to damage extremely especially the wear fault due to its complex structure with various mechanical equipment and harsh working environment such as the silt-carrying conditions. In this paper, the tribological systems of dredgers were analyzed in detail based on AHP and based on the analysis, the framework of wear control methods for dredgers was proposed. A series of wear control methods were taken including online wear condition monitoring and wear self-repairing to ensure the reliable operation of the dredger. The effects of the wear control measures for dredgers were evaluated and it proved that all the measures taken in this paper are effective to improve the reliability of the mechanical equipment in dredgers.

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