基于Solidworks的连退清洗段转向辊优化设计

OPTIMIZATION DESIGN OF STEERING ROLL IN CONTINUOUS CLEANING SECTION BASED ON SOLIDWORKS

某钢厂连退线清洗段转向辊自投产以来频频发生断辊事故,严重影响了产线的稳定运行。本文利用SolidWorks软件对转向辊进行了模型建立,运用集成的Simulation仿真分析功能对该模型进行了静应力有限元分析。模型表明,因转向辊中间轴为两段式,刚性差,且轴头与腹板之间为焊缝连接,为应力集中点和受力薄弱点,在交变应力作用下易发生断裂事故。以原结构为对比基础,研究了不同腹板厚度、腹板裆距、两段轴结构下的受力情况。结果表明,腹板厚度为25 mm、裆距为350 mm、采用通轴结构后,转向辊受力最小。将优化后的转向辊投入产线使用,自2015年上线至今未再发生断辊事故。该方法可行、有效,为转向辊结构分析和优化设计提供了新思路。

There are frequent broken accidents of the steering roll in a steel plant continuous withdrawal line cleaning section since the commissioning,seriously affecting the stable operation of the production line.In this paper,the model of the steering roller is established by SolidWorks software,and the static stress finite element analysis of the model is carried out by means of the integrated Simulation analysis function.The model shows that the middle shaft of the steering roller is two-stage,the rigidity is poor,and the joint between the shaft head and the web is weld joint,which is the point of stress concentration and the weak point of stress bearing.Based on the original structure,the stress of different web thickness,web crotch distance and two-segment shaft structure is studied.The results show that the web thickness is 25 mm,the crotch distance is 350 mm,and the force of the steering roller is the smallest when the structure of the common shaft is adopted.The optimized steering roll was put into production line,and no roll-breaking accident occurred since 2015.The method is feasible and effective,and provides a new idea for structural analysis and optimal design of steering roller.