基于轨道扣件系统力学特性的动态拧紧策略设计  

Design of Dynamic Tightening Strategy Based on Mechanical Characteristics of Rail Fastener System

作　　者：李鑫 柴立斌 王中玉 陈古波[4] 梁举科 李晖[5] 

机构地区：[1]重庆理工大学机械工程学院,重庆 [2]中国铁路北京局集团有限公司北京工电大修段,北京 [3]中国铁路北京局集团有限公司北京高铁工务段,北京 [4]重庆理工大学电子工程与技术学院,重庆 [5]重庆理工大学材料科学与工程学院,重庆

出　　处：《交通技术》2022年第3期222-235,共14页Open Journal of Transportation Technologies

摘　　要：对扣件系统进行受力分析,并与普通螺栓连接进行对比分析拧紧过程的不同点;对扣件弹条进行有限元仿真,观察弹条的扣压力变化特性,并设计扣压力试验和拧紧力学实验,研究扣件系统拧紧力学特性;基于扣件力学规律设计相应的动态拧紧策略,并通过实验验证了算法的可靠性和有效性,可有效提高拧紧扭矩的质量。The stress of fastener system is analyzed, and the difference of tightening process is compared with that of ordinary bolt connection. The finite element simulation of fastener spring bar is car-ried out to observe the change characteristics of spring bar’s buckle pressure, and the buckle pressure test and tightening mechanics test are designed to study the tightening mechanics cha-racteristics of fastener system. The corresponding dynamic tightening strategy is designed based on the mechanical law of fastener, and the experiment is carried out, the reliability and effectiveness of the algorithm are verified, which can effectively improve the quality of tightening torque.

关 键 词：扣件系统 螺栓拧紧 扭矩控制 算法 

分 类 号：U21[交通运输工程—道路与铁道工程]