摘要
针对最高运行速度160 km/h、轴重21 t的工程车,从制动距离限值、轮轨黏着限度、车轮温度限值、车轮强度要求这4方面进行分析,确定了闸瓦类型、车轮单双侧制动型式和车轮轮径,并校核了选型方案中磨耗到限车轮在2种制动工况下受到热载荷与机械载荷共同作用时的强度。计算结果表明,制动初速160 km/h、轮径915 mm的工程车采用M型粉末冶金闸瓦、车轮双侧制动满足紧急制动距离和不滑行的条件,并且车轮踏面最高温度不高于使用要求的极限温度,同时磨耗到限车轮在2种制动工况下的最大应力满足强度要求。
For an engineering train with maximum running speed up to 160 km/h and axle load of 21 t, the brake shoe type, single and double side braking type and wheel diameter were confirmed by analysis in four aspects of braking distance limit, wheel-rail adhesion limit, wheel temperature limit and wheel strength requirement, and the strength of the wheels with the maximum wear was checked under the combined action of thermal load and mechanical load in two braking conditions under the proposed selection scheme. According to the results, for the engineering train with an initial speed at braking application of 160 km/h and 915 mm wheel diameter, the wheel configuration of the M-type powder metallurgy brake shoe and wheel clasp braking can not only meet the requirements of emergency braking distance and no sliding, but also maintain the maximum temperature of wheel tread less than the temperature limit required for service, and exert the maximum stress of the wheels with the maximum wear under the two braking conditions meeting the strength requirements.
作者
雷亚南
黄志辉
胡飞飞
朱世昌
张兵奇
马超
LEI Yanan;HUANG Zhihui;HU Feifei;ZHU Shichang;ZHANG Bingqi;MA Chao(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;Technology R&D Center,Baoji CRRC Times Engineering Machinery Co.,Ltd.,Baoji,Shaanxi 721003,China)
出处
《机车电传动》
北大核心
2022年第6期67-73,共7页
Electric Drive for Locomotives
基金
国家自然科学基金项目(U19A20109)。
关键词
有限元
制动距离
轮轨黏着
车轮温度
强度
finite element
braking distance
wheel-rail adhesion
wheel temperature
strength
