惯性振动破碎机转子自同步研究

Study on self-synchronization of rotors of inertia vibratory crusher

惯性振动破碎机设计依靠自身的振动自同步特性实现转子同步转动,为讨论其同步特性,建立了设备运行的微分方程,在一阶近似条件下得到系统的同步性与稳定性条件。理论分析可知,系统的转子自同步是振动力矩与转子驱动力矩共同作用的结果;对振动力矩产生影响的参数,也会对系统的自同步性能产生影响;提高转子的惯性矩与转速,则系统的振动力矩变大,其同步的稳定性也更好。然而利用平均积分法分析系统的自同步性能,不能从理论上得到扭转弹簧刚度大小对系统自同步性能的影响,实际上,振动力矩依靠动颚的摆动平衡2个转子的能量输入,扭转弹簧刚度大小影响系统的自同步性能,仍需要进一步研究。

The synchronization of the rotors of the inertia vibratory crusher depends on the vibration characteristics of the crusher. To discuss their synchronization performance, the motion differential equations of the system were established, and the synchronization and stability conditions of the system were obtained at the first-order approximation. The theoretical analysis showed： self-synchronization of the rotors resulted from combined action of the vibratory moment and the driving moment; the parameters affecting the vibratory moment also affected the self-synchronization performance of the system; the increase in the inertia moment and the rotary velocity of the rotor brought about greater vibratory moment and more stable synchronization of the system. However, the analysis of the self-synchronization performance of the system with the average integral method failed to obtain the influence of the stiffness of the torsional spring on the self-synchronization performance of the system. In fact, the energy input of the two rotors was balanced by the vibratory moment via the swing of the moving jaws. The influence of the stiffness of the torsional spring on the self-synchronization performance of the system needed further study.