塔式矿井提升机围包角对摩擦轮应力的影响

为探讨塔式矿井提升机围包角对摩擦轮应力的影响,以JKM-4X4Ⅲ井塔式摩擦提升机(国标参数)为实例,建立对应的提升机主轴装置有限元模型。由于钢丝绳在筒壳上的作用力符合欧拉分布规律,得到摩擦轮所受外力转化施加到主轴装置有限元模型,并定义合理的约束条件;借助于ABAQUS大型分析软件,对不同围包角工况下的模型进行应力计算,得到了提升机摩擦轮不同位置处循环疲劳应力值及摩擦轮循环疲劳应力随围包角变化的分布规律:围包角180°~190°时,应力值变化相对比较平缓;围包角195°时,应力变化梯度明显增大。研究结果为井塔式摩擦提升机主轴装置设计以及现场安装时围包角的选取提供了可靠的理论基础。

Influence of Wrap Angle of Tower Hoist on the Friction Wheel Stress

In order to discuss on the influence of wrap angle of tower hoist on the friction wheel stress,taking the JKM-4X4Ⅲ tower friction hoist (GB parameters) as a case，the finite element model of the main shaft device is built.Since the applied loads by hoist rope on drum shell conforms to Euler formula，the outer force of the friction wheel is obtained and transformed into the finite element model of the main shaft device.Then，the reasonable constraint condition is defined.With the aid of finite element analysis software（ABAQUS），stress calculation is made for the model with different wrap angles.The cyclic fatigue stress at different site of tower friction hoist and the distribution regularity of the cyclic fatigue stress with variation of wrap angle are achieved respectively:stress variation is relatively gentle when wrap angle is 180°~190°;stress variation gradient is increases obviously when wrap angle is 195°.The research results provides a reliable theoretical basis for the design of the main shaft device of the tower hoist and the selection of wrap angle when on-site installation.