基于实测数据的液压机预应力拉杆刚度分析  

Stiffness analysis on prestressed tie rod for hydraulic press based on measured data

作　　者：王宏亮 魏海涛 贾鋆 李晶 马志刚 Wang Hongliang;Wei Haitao;Jia Yun;Li Jing;Ma Zhigang(Energy Equipment Engineering Research Institute,Lanzhou LS Group Co.,Ltd.,Lanzhou 730314,China;Lanzhou LS Energy Equipment Engineering Research Institute Co.,Ltd.,Lanzhou 730314,China;Industrial Design Center,Lanzhou LS Group Co.,Ltd.,Lanzhou 730314,China;Lanzhou LS Heavy Equipment Co.,Ltd.,Lanzhou 730314,China;Key Laboratory of Intelligent Control of Metal Plastic Forming Equipment,Gansu Province,Lanzhou 730314,China)

机构地区：[1]兰州兰石集团有限公司能源装备研究院,甘肃兰州730314 [2]兰州兰石能源装备工程研究院有限公司,甘肃兰州730314 [3]兰州兰石集团有限公司工业设计中心,甘肃兰州730314 [4]兰州兰石重工有限公司,甘肃兰州730314 [5]甘肃省金属塑性成型装备智能控制重点实验室,甘肃兰州730314

出　　处：《锻压技术》2024年第8期161-166,共6页Forging & Stamping Technology

摘　　要：预应力拉杆是锻压机全预紧组合机架的重要组成部分和关键受力部件。为了研究快锻液压机实际工作时拉杆的真实变形情况及组合机架的预紧状态,针对45 MN液压机在额定工况下拉杆的应变进行了贴片测试,同时运用Ansys软件对与测试相同工况下的全预紧组合机架进行了静力学结构仿真,将测试结果与仿真结果对比分析,得出拉杆在工作中的真实应变水平和位移量,校核了有限元分析的可信度,为液压机设计和拉杆预紧工艺提供了理论依据和数据支撑。结合理论计算、有限元模拟、现场实测数据,通过运用3种理论与实测工具方法,互相校核验证,分析了拉杆在工作中的真实变形状态,掌握了机架的实际预紧水平。The prestressed tie rod is an important part and the key force components of full preload combined frame for forging press.Therefore,in order to research the real deformation condition of tie rod during the actual working for fast forging hydraulic press and the preload state of combined frame,the strain of pull rod for 45 MN hydraulic press under the rated working condition was tested by patch test,and the static structure simulation of full preload combined frame under the same working condition as the test was carried out by software Ansys.Then,the test and simulation results were compared and analyzed,and the real strain and displacement amount of the rod in operation were obtained,which verifies the credibility of the finite element analysis and provides theoretical basis and data support for the hydraulic press design and the preload process of tie rod.Furthermore,combining the theoretical calculations,finite element simulation and on-site measured data,the real deformation state of tie rods in operation was analyzed,and the actual preload level of frame was grasped by using three theoretical and measured tooling methods to verify each other.

关 键 词：快锻压机 组合式机架 刚度 应变 位移量 

分 类 号：TG315.4[金属学及工艺—金属压力加工]