对卸船机小车行走减速器输出齿轮键失效原因进行分析,将设计理论与实际破坏状态相结合,得出键主要破坏原因,并实施改善措施,消除失效故障.%The paper analyzes the causes resulting in failure of output gear key of trolley travelling reducer of ship un-loader, and combines the design theory with actual failure state, in order to figure out major reasons for gear key failure, take corrective measures and remove any related failure.
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