10仓高方平筛的有限元分析及机械强度测试研究

The Stress-Strain Analysis and Testing of 10 Bins Square Plansifter

高方平筛是制粉设备三大主机之一,目前国内设计生产的大型高方平筛基础理论数据很少,主要依靠工程经验,所以平筛在强度设计方面存在一些不足,如平筛筛框的横梁以及筛框和传动架底部的螺栓连接处,在使用过程中很容易发生断裂。针对大型高方平筛在使用中存在的问题,进行研究,首先在十仓平筛三维建模的基础上,进行了静态有限元仿真分析;在模拟仿真分析的基础上,又采用电测法进行了机械强度测试,分析确定了应力应变较大的点及部位,最大应力为284 MPa;明确了设备的质量是影响高方平筛机械性能及可靠性的主要因素之一;仿真、测试结果基本一致,与实际情况基本吻合;最后根据分析计算提出了设备进一步改进的意见,研究结果对高方平筛的结构优化设计和大型平筛的设计有重要的指导意义。

The square plansifters is one of the three hosts of flour milling equipment. For the lack of data about designing, most designs borrow ideas of western design and experience. Breakdowns occurred when the plansifter was in use. The paper exhibited the simulation analysis by FEA based on Pro/e model and test results from the electrical measuring method to identify other larger stress points.. The results showed that the weight of equipment was one of the main factors. The results of simulation and testing were basically the same. The reasonable suggestions for improvement were put forward, and the fault diagnosis and the optimization design of the structure had important guiding significance.