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弹簧离合器是通过弹簧两端激发圈在壳体内预压缩产生摩擦力矩实现自激的,弹簧两端激发圈预压缩量的大小直接影响离合器的结合性能及使用寿命。运用有限元方法建立了弹簧离合器动力学模型,求解了不同端部预紧量下高速弹簧离合器输出壳体与输入壳体速度的同步性,以及弹簧的Mises应力和径向位移,由此得到了弹簧离合器自激接合的弹簧预压缩量条件,并与解析求解得到的离合器临界预压缩量进行了对比。此外,有限元分析结果表明,稳态接合后弹簧的应力分布呈M型,弹簧的过渡线圈段应力出现峰值,而中间端应力分布均匀。该分析可为弹簧离合器的优化设计提供依据。
Spring clutch through the spring at both ends of the excitation coil in the housing pre-compression friction torque to achieve self-excited, both ends of the spring pre-excitation coil size directly affects the size of the clutch performance and service life. The dynamic model of the spring clutch was established by using the finite element method. The synchronization between the speed of the output case and the input case of the high-speed spring clutch with different end preload and the Mises stress and radial displacement of the spring were obtained. Spring pre-compression clutch spring self-excited spring pre-compression conditions, and analytical solution obtained by the clutch critical pre-compression was contrasted. In addition, the results of finite element analysis show that the stress distribution of the spring is M-type after steady-state engagement, and the stress of the transitional coil section of the spring peaks and the stress distribution is uniform. This analysis can provide the basis for the optimal design of spring clutch.