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重型板式给矿机是矿山生产中重要的设备，它的 可靠性直接关系到矿山生产效益和安全。因此其传送扭矩的主轴的可靠性极为重要。传统设计方法中是根据应力和疲劳的平均值进行设计，其安全系数的选取纯粹是经验性的，不能反映问题的本质。使用疲劳强度的可靠性设计是较好的一种方
Heavy plate feeder is an important equipment in mine production, its reliability is directly related to the mine production efficiency and safety. Therefore, the reliability of the spindle that transmits the torque is extremely important. The traditional design method is based on the average stress and fatigue design, the selection of safety factor is purely empirical, can not reflect the essence of the problem. Reliability design using fatigue strength is a better way