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讨论了铁路轴承保持架一次性失效动力可靠性。在保持架结构动力分析基础上，计算了响应位移的最大熵概率密度函数，利用最大熵密度函数给出了保持架不发生严重磨损和卡死时的可靠度表达式，并给出可靠度的极值估计方法和一次性失效寿命估计方法。以NJ3224X3Q1／SO轴承保持架为例，计算了它在滚子冲击作用下的结构动力响应，利用响应数据计算了位移的最大熵概率密度函数，进而计算了保持架不发生严重磨损和不被卡死时的可靠度。附图2幅，参考文献5篇。
Discusses the dynamic reliability of one-time failure of railway bearing cage. Based on the dynamic analysis of the cage structure, the maximum entropy probability density function of response displacement is calculated. The maximum entropy density function is used to give the reliability expression of the cage with no serious wear and jamming, and the reliability Extreme value estimation method and one-time failure life estimation method. Taking the NJ3224X3Q1 / SO bearing cage as an example, the dynamic response of the NJ3224X3Q1 / SO bearing was calculated under the action of roller impact. The maximum entropy probability density function of the displacement was calculated by using the response data. Then the cage was calculated without serious wear and without being stuck Reliability at death. Figure 2, reference 5.