商用车球墨铸铁V型推力杆结构设计与开发  

Design and Development of Ductile Iron V Shape Thrust Rod of Commercial Vehicle

作　　者：吕高伟 王海啸 丛建臣[1,2] 丛子凌 吕世杰 刘凡伟 倪培相 张少军 LV Gao-wei;WANG Hai-xiao;CONG Jian-chen;CONG Zi-ling;L Shi-jie;LIU Fan-wei;NI Pei-xiang;ZHANG Shao-jun(Shandong University of Technology,Zibo 255000,Shandong,China;Tianrun Industry Technology Co.,Ltd.,Wendeng 264400,Shandong,China;Shandong Weigao Group Medical Polymer Products Co.,Ltd.,Wendeng264400,Shandong,China;Weihai Wendeng Technician College,Wendeng 264400,Shandong,China)

机构地区：[1]山东理工大学,山东淄博255000 [2]天润工业技术股份有限公司,山东威海264400 [3]山东威高集团医用高分子制品股份有限公司,山东威海264400 [4]威海市文登技师学院,山东威海264400

出　　处：《铸造》2024年第12期1736-1743,共8页Foundry

基　　金：2022年度北仑区科技创新团队项目(2022BL0008)。

摘　　要：针对传统商用车V型推力杆的制造工艺存在工序繁多,生产周期长及成本高等问题,提出了以铁代钢的技术方案,成功开发了商用车铸态QT700-6球墨铸铁V型推力杆。球墨铸铁V型推力杆采用H型整体式结构,与钢结构推力杆相比,球墨铸铁V型推力杆能够有效避免内应力的产生,同时重量降低9%,通过有限元静力学分析发现在相同工况下球墨铸铁V型推力杆的最大应力低于钢结构V型推力杆的最大应力,验证了球墨铸铁V型推力杆的可靠性。对球墨铸铁V型推力杆进行静态台架试验,对比试验结果与仿真结果,发现有7个应力误差值在15%以内。在完成纵向循环加载20万次后,球墨铸铁V型推力杆未出现失效问题,满足疲劳台架试验要求。Aiming at the traditional manufacturing process of commercial vehicles V shape thrust rod,which has the problems of complicated processes,long production cycle and high cost.In this paper,the technical scheme of replacing steel with iron is proposed,and the as-cast QT700-6 ductile iron V-shaped thrust rod of commercial vehicle is successfully developed.The V-shape thrust rod of ductile iron adopts H-shape integral structure.Compared with the steel structure thrust rod,the V-shape thrust rod of ductile iron can effectively avoid the generation of internal stress and reduce the weight by 9%.Through finite element static analysis,it was found that the maximum stress of ductile iron V type thrust rod is lower than that of steel structure V type thrust rod under the same working conditions,which verifies the reliability of ductile iron V type thrust rod.The static bench test of the ductile iron V type thrust rod was carried out.Comparing the test results with the simulation results,it was found that there were 7 stress error values within 15%.After completing the longitudinal cyclic loading 200000 times,the ductile iron V-type thrust rod has no failure problem and meets the requirements of fatigue bench test.

关 键 词：球墨铸铁 V型推力杆 结构设计 性能分析 

分 类 号：TG146.2[一般工业技术—材料科学与工程]