本文在参考国外一些试验研究成果的基础上:通过概率论和数理统计的方法,得出了矿山机械、工程机械、交通运输机械、金属切削机床等的载荷折算系数值。把这些系数值用于疲劳强度计算,得到比直接按等幅载荷计算要精确的计算结果。在不具备测试条件的情况下,用这种简易计算方法对机械零件进行快速而又较准确的疲劳强度计算,有较大的实用价值。 Based on the results of some experiments in foreign countries, this paper obtained the load conversion factors of mining machinery, construction machinery, transportation machinery and metal cutting machine tools by means of probability theory and mathematical statistics. Using these values ​​of coefficients for fatigue strength calculations yields more accurate results than for straight-load applications. In the absence of test conditions, the use of this simple calculation of mechanical parts for fast and accurate calculation of fatigue strength, a greater practical value.