手制动机安装面关键尺寸对装车影响的研究  

Study on Influence of Key Dimensions of Mounting Surface of Hand Brake on Loading

作　　者：曾得峰 程苗 钟星宇 Zeng De-feng;Cheng Miao;Zhong Xing-yu(Meishan CRRC Brake Technology Co.,Ltd.,Meishan 620010,China)

机构地区：[1]眉山中车制动科技股份有限公司,四川眉山620010

出　　处：《内燃机与配件》2024年第1期76-79,共4页Internal Combustion Engine & Parts

摘　　要：NSW-I型手制动机为铁路货车车辆主型人力制动配件,主要用于停车防溜和调车作业,通过环槽铆钉连接副锁紧在车辆安装座上。长期存在装车前试验合格,铆接装车后不缓解的惯性质量问题。为提升零部件制造水平,提高装车合格率,本文主要研究手制动机结构特点,分析制动后不缓解的原因,并通过建立铆接装车的仿真模型,通过有限元仿真分析,进一步确定零部件关键尺寸的偏差对装车的影响。分析结果表明,当手制动机安装面尺寸偏差超限时,铆接装车后零部件受力失效变形,导致手制动机无法缓解,产品不合格。保证安装面关键尺寸,即可防止出现装车不缓解。NSW-I hand brake is the main type of manual brake accessories for railway freight cars,which is mainly used for parking anti-slip and shunting operation,and is locked on the vehicle installation seat by ring groove rivet connection pair.There has been a long-standing inertia quality problem,which is qualified before loading and not alleviated after riveting.In order to improve the manufacturing level of parts and components and improve the qualified rate of loading,this paper mainly studies the structural characteristics of hand brake,analyzes the reasons for non-relief after braking,and establishes the simulation model of riveting and loading through finite element simulation analysis.further determine the influence of the deviation of the key dimensions of the parts on the loading.The analysis results show that when the dimension deviation of the mounting surface of the hand brake exceeds the limit,the parts are subjected to force failure and deformation after riveting,which leads to the failure of the hand brake and the unqualified products.Ensure the key dimensions of the installation surface,which can prevent the unrelieved loading.

关 键 词：NSW-I型手制动机 焊接变形 装配故障 工艺技术 仿真分析 

分 类 号：U270.35[机械工程—车辆工程]