堵转工况下托辊-输送带摩擦温升特性  

Friction Temperature Rise Characteristics between Idler and Conveyor Belt under Locked Rotating Conditions

作　　者：胡坤 吕乔[2] 蒋浩 HU Kun;L Qiao;JIANG Hao(State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Huainan 232001,China;School of Mechanical and Electrical Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]深部煤矿采动响应与灾害防控国家重点实验室,淮南232001 [2]安徽理工大学机电工程学院,淮南232001

出　　处：《科学技术与工程》2025年第9期3637-3645,共9页Science Technology and Engineering

基　　金：国家自然科学基金(52274153);安徽省高校学科拔尖人才学术资助项目(gxbjZD2022015)。

摘　　要：针对带式输送机运行时托辊堵转,引起托辊与输送带过度摩擦、异常升温等问题,基于微观摩擦理论,在考虑滞后生热情况下,结合虚功法建立堵转托辊-输送带摩擦表面温升模型;采用有限元法对堵转托辊-输送带摩擦模型进行热力耦合仿真,分析带速及载荷对温升的影响;搭建堵转托辊与输送带摩擦生热实验平台,利用红外热像仪监测其在不同参数下的温升情况。结果表明:堵转托辊-输送带的摩擦生热量与带速及载荷呈正相关,随着带速、载荷的增加,均会导致生热量的增加,且热量主要集中在堵转托辊表面;实验值与理论计算值最大误差为8.7%,验证了理论模型的可靠性,并根据研究结论提出相应措施。The issues of idler blocking during belt conveyor operation were addressed,which leads to excessive friction and abnormal temperature rise between idlers and conveyor belts.A friction surface temperature rise model for faulty idlers and conveyor belts was established based on microscopic friction theory,considering the phenomenon of hysteresis-induced heat generation and utilizing the virtual work approach.The finite element method was employed to conduct a thermo-mechanical coupling simulation on the friction model to analyze the effects of belt speed and load on temperature rise.An experimental platform was constructed to investigate the heat generation from friction between faulty idlers and conveyor belts,where an infrared thermal imager was utilized to monitor the temperature rise under varying parameters.The results indicate that the friction-induced heat generation between faulty idlers and conveyor belts positively correlates with both belt speed and load.An increase in either factor results in heightened heat generation,with the heat being primarily concentrated on the surface of the faulty idlers.The maximum deviation between experimental values and theoretical calculations is 8.7%,confirming the reliability of the theoretical model.Corresponding measures are proposed based on these findings.

关 键 词：堵转托辊 输送带 摩擦生热 滞后生热 温度场 

分 类 号：TD528[矿业工程—矿山机电]