同向双螺杆挤出机传动箱输出轴强度分析及优化  

Strength analysis and optimization of output shaft for co-rotating twin-screw extruder transmission box

作　　者：张晓 马永寿[1] 梁晓刚[1] Zhang Xiao;Ma Yongshou;Liang Xiaogang(Tianhua Institute of Chemical Machinery&Automation Co.LTD.,Lanzhou 730060,Gansu,China)

机构地区：[1]天华化工机械及自动化研究设计院有限公司,甘肃兰州730060

出　　处：《橡塑技术与装备》2025年第3期50-54,共5页China Rubber/Plastics Technology and Equipment

基　　金：项目编号:工信部专项TC220A04W-4。

摘　　要：双螺杆挤出机传动部分将高转速低扭矩值通过减速转换成低转速高扭矩值,进而带动螺杆挤出物料向前输送。本文以SHJ-600高扭矩同向双螺杆挤出机传动箱箱体的输出轴为研究对象,采用有限元方法进行静力学和疲劳分析,得到了输出轴的变形量及等效应力应变云图、寿命及安全系数等相关参数,发现输出轴断裂原因为疲劳失效,进而对输出轴的结构和材料进行相应优化和改进,结果表明优化后的输出轴最大应力降低为原来的38.8%,安全系数显著提升,优化方案可行可靠并为今后高强度轴设计与优化提供了思路。The transmission system of a twin-screw extruder converts high-speed,low torque power into low-speed,high torque output through a reduction device,thereby driving the screw to transport the material forward.This article takes the output shaft of the SHJ-600 high torque co rotating twin-screw extruder transmission box as the research object,and uses finite element analysis method to conduct static and fatigue analysis on it.Through analysis,key parameters such as deformation of the output shaft,equivalent stress-strain cloud map,life prediction,and safety factor were obtained.Research has found that the main cause of output shaft fracture is fatigue failure.Based on this,the structure and material of the output shaft have been optimized and improved.The results showed that the maximum stress of the optimized output shaft decreased to 38.8% of the original,and the safety factor was significantly improved,verifying the feasibility and reliability of the optimization scheme and providing reference ideas for the design and optimization of high-strength shafts in the future.

关 键 词：有限元 输出轴 静力分析 疲劳强度分析 

分 类 号：TQ330.43[化学工程—橡胶工业]