【摘要】 以惯性圆锥破碎机为研究对象,首先计算了该破碎机的最大破碎力。利用最大破碎力,对破碎机的主轴进行力学分析,得到了由最大破碎力引起的激振器对主轴的最大作用力以及主轴受力的计算公式。然后使用ANSYS APDL分析软件建立了主轴的有限元模型,对其主轴进行结构静力学分析与模态分析。静力学分析结果显示主轴主要变形在偏心激振器内圆柱面与主轴外圆柱面的切线附近,最大变形量为0.64mm,满足其刚度要求。材料的屈服强度为930MPa大于最大等效应力770MPa,满足其强度要求。模态分析得到主轴的各阶固有频率及相应的模态振型。结果表明破碎机激振器旋转频率远小于主轴各阶固有频率,将不会产生共振现象,工作安全可靠。以上分析结果为惯性圆锥破碎机主轴的设计提供了一定的依据。更多还原

【Abstract】 With inertia cone crusher as the research object,the maximum crushing force of the crusher was calculated.Utilizing the maximum crushing force,the maximum force on the spindle from exciter that was caused by the maximum crushing force and formula of the spindle stress were obtained. Then ANSYS APDL was used to set up a finite element model of the spindle so as to make its structure statics analysis. Statics analysis show that the main deformation was in the vicinity of the tangent of eccentric exciter’s inner cylindrical surface and the spindle’s outer cylindrical surface,the maximum deformation was 0.64 mm and it meet rigidity requirements. The material yield strength was 930 MPa,more than the Maximum Equivalent Stress of 770 MPa and it meet intensity requirements. Modal analysis obtained the natural frequency and the corresponding mode shapes of spindle. The results show that the rotation of the vibrator frequency is much smaller than the natural frequency of the spindle,and it will not produce the resonance phenomenon. Thus,the spindle is safe and reliable.The above analysis results provides some basis for the design of inertia cone crusher.更多还原