新型柱面摩擦限矩器摩擦副热力耦合特性研究  

Research on thermodynamic coupling characteristics of the friction pair of a new type of cylindrical friction torque limiter

作　　者：崔红伟 李冬辉[1] 李耀纲 高军俊 梅碧舟 苏兴涛 冯浩帅 CUI Hongwei;LI Donghui;LI Yaogang;GAO Junjun;MEI Bizhou;SU Xingtao;FENG Haoshuai(School of Electrical Automation and Information Engineering,Tianjin University,Tianjin 300072,China;College of Mechanical and Electrical Engineering,Shanghai Donghai Vocational and Technical College,Shanghai 200241,China;College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Zhejiang Yiduan Precision Machinery Co.,Ltd.,Ningbo 315702,China)

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]上海东海职业技术学院机电学院,上海200241 [3]太原理工大学机械与运载工程学院,太原030024 [4]浙江易锻精密机械有限公司,浙江宁波315702

出　　处：《重庆理工大学学报（自然科学）》2023年第12期310-319,共10页Journal of Chongqing University of Technology：Natural Science

基　　金：山西省基础研究计划自然科学研究面上项目(202203021211183);山西省重点研发计划项目(201803D121011)。

摘　　要：针对煤矿综采工作面刮板输送机过载保护性能差、可靠性低及寿命短等问题,设计了一种新型高功率密度柱面摩擦限矩器。为了研究打滑过程柱面摩擦副温度场和应力场的变化规律,利用ABAQUS软件建立了柱面摩擦副热力耦合模型,采用直接耦合法分析了不同载荷多种工况条件下摩擦副铜套与衬套的温度场及应力场变化规律。结果表明:在连续打滑工况下,摩擦副铜套与衬套的温度与应力随打滑时间不断增大,且在铜套接触面边缘出现最大应力集中而衬套应力出现交替变化现象,而打滑-同步工况下,随着打滑停止,摩擦副应力温度逐渐降低,在2种工况下,摩擦副温度都随着作用载荷的增大而增大。本研究可为柱面摩擦限矩器的优化设计及疲劳寿命预测提供理论依据。To remedy the low reliability and short lifespan caused by poor overload protection performance of scraper conveyors of fully mechanized working faces in coal mines,a new type of high-power density cylindrical friction torque limiter is proposed.A thermal coupling model of cylindrical friction pairs is built by employing ABAQUS to study the changes in temperature and stress fields of cylindrical friction pairs during sliding.The direct coupling method is used to analyze the temperature and stress fields of the copper sleeve and bushing of the friction pair under different loads and working conditions.The results reveals that,the temperature and stress of the copper sleeve and bushing of the friction pair increase continuously with sliding time under continous sliding conditions.There is a maximum stress concentration at the edge of the copper sleeve contact surface,while the stress of the copper bushing experiences alternating changes.Under slip-synchronous working conditions,the stress and temperature of the friction pair decrease gradually as the slip stops.Under both operating conditions,the temperature of the friction pair increases with the rise of the applied load.The study can provide a theoretical basis for the optimized design and prediction of the fatigue life of cylindrical friction torque limiter.

关 键 词：限矩器 柱面摩擦副 有限元法 热力耦合 

分 类 号：TH227[机械工程—机械制造及自动化]