虚拟样机的MCCB操作机构连杆结构强度的仿真研究  

Simulation research on the connecting rod structural strength of the MCCB operating mechanism of the virtual prototype

作　　者：郭杰 迟长春(指导)[1] 王泽涛 GUO Jie;CHI Changchun;WANG Zetao(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《上海电机学院学报》2023年第3期165-169,共5页Journal of Shanghai Dianji University

摘　　要：为保证低压断路器操作机构的可靠性,以直动式双断点塑壳断路器(MCCB)的操作机构为研究对象,利用虚拟样机技术仿真低压断路器中连杆所受的应力。结合有限元分析Flex方法,构造经过优化的操作机构刚柔耦合虚拟样机模型。通过仿真分析得到连杆中的应力分布情况,对其结构强度进行研究,根据仿真结果找出影响杆件应力产生的主要因素,并完成进一步的优化设计。研究表明:由Flex方法建立的仿真模型能对断路器分合闸时的连杆结构强度实现综合分析,可为后续断路器操作机构杆件强度的可靠性研究提供参考依据。To ensure the reliable operation of the operating mechanism of the low-voltage circuit breaker,the operating mechanism of the direct-acting double-break-point molded case circuit breaker(MCCB)is taken as the research object,and the stress of the connecting rod in the lowvoltage circuit breaker is simulated by using the virtual prototype technology.The optimized rigidflexible coupling virtual prototype model of the operating mechanism is constructed by combing with the Flex method of finite element analysis.The stress distribution in the connecting rod is obtained by simulation analysis,and the structural strength is studied.According to the simulation results,the main factors affecting the stress generation of the connecting rod are found,and the further optimization design is completed.The research shows that the simulation model established by the Flex method can comprehensively analyze the strength of the connecting rod structure when the circuit breaker is opened or closed,and can provide a reference for the follow-up reliability research of the rod strength of the circuit breaker operating mechanism.

关 键 词：低压断路器 虚拟样机 结构强度 应力分析 

分 类 号：TM561[电气工程—电器]