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本文讨论了在轧机传动(带飞轮)中所设置的安全销联轴器的载荷分析和结构设计,着重讨论了安全销的强度计算方法,引入了载荷分布系数K_β、有效应力集中系数K_ι以及应用的图表公式。为了保证联轴器的安全和经济性,必须正确设定其脱开力矩。由于轧制过程中所传递扭矩的剧烈变化,在安全销中产生不稳定单向波动剪应力,在这种交变应力作用下,安全销的断裂形式分为两种:一是过载破坏;二是疲劳破坏。因此,要合理选择它的材质,热处理方法和形状尺寸,尽可能缩小其疲劳强度与静载强度之差,使安全销联轴器能有效地防止传动线上重要零件的过载破坏,又能可靠地传递负荷中的动载分量。
This paper discusses the load analysis and structural design of the safety pin coupling installed in the mill drive (with flywheel). The method of calculating the strength of the safety pin is discussed. The load distribution coefficient K_β, the effective stress concentration factor K_ι, and the application Chart formula. In order to ensure the safety and economy of the coupling, it is necessary to set its torque correctly. Due to the dramatic changes in torque transmitted during the rolling process, unsteady unidirectional fluctuating shearing stress is generated in the safety pin. Under this alternating stress, the breaking form of the safety pin is divided into two types: one is overload failure; the other is overload It is fatigue damage. Therefore, to choose a reasonable choice of its material, heat treatment methods and shape and size, as far as possible to reduce the fatigue strength and static load difference so that the safety pin coupling can effectively prevent the transmission line of the important parts of the overload damage, but also reliable Pass the load in the dynamic load component.