控制棒驱动机构钩爪运动副受力分析及优化

Analysis and Optimization of Kinematic Pair Force in Control Rod Drive Mechanism

建立运动副零件受力与钩爪尺寸、摩擦系数、连杆角度和外部载荷的函数表达式,并通过运动分析软件验证表达式的合理性。确定影响运动副的关键参数及其对零件受力的影响趋势,结果表明:钩爪运动副优化的有效方法为增长钩爪上2个销轴孔的间距。采用运动分析软件对优化前后的零件受力进行分析比较,结果表明:优化后零件受力得到了改善。

Function expressions of kinematic pair force with latch dimensions, friction coefficient, link angle and external load was obtained by theoretical analysis, and the expression was verified by the motion analysis software. Key parameters of kinematic pair were confirmed, and their effect trends with force of parts were obtained. They show that the available method of kinematic pair optimization is increasing the space of latch holes. Using the motion analysis software, the forces of parts before and after optimization was compared. The result shows that the forces of oarts were imoroved after the omimization.