【摘要】 提出了一种筛分机强度设计的新思路，在确定筛分机疲劳破坏的基础上，探讨了引起疲劳破坏的原因，提出了随机应力是引起筛分机疲劳破坏的主要原因，并导出了计算不同应力幅值的应力循环次数的方法．可用于筛分机的强度设计和故障诊断。更多还原

【Abstract】 Upon determining the fatigue destruction of a screen machine, the paper explores the reason causing the fatigue destruction and points out that the inline stress is the main reason, and a method is introduced for calculation stress cycle times at variable stress amplitude. Through discussing and analyzing ,a new thought is put forward for the stength design of screen machine, which can be used designing the strength and diagosing the faults,更多还原