五连杆弹簧操动机构的凸轮优化设计方法  

Optimal Design Method of Cam for Five-linkage Spring Operating Mechanism

作　　者：吴小钊 郑晓果 李燕燕[1] WU Xiaozhao;ZHENG Xiaoguo;LI Yanyan(Xuji Group Corporation,Henan Xuchang 461000,China)

机构地区：[1]许继集团有限公司,河南许昌461000

出　　处：《高压电器》2023年第3期150-155,共6页High Voltage Apparatus

摘　　要：目前中国弹簧操动机构的凸轮优化设计都是针对四连杆机构,对五连杆机构的凸轮优化设计研究较少,目前五连杆机构的凸轮设计还是依靠经验,无法使输出力特性与负载特性合理匹配,导致五连杆机构存在合闸速度大、合闸不可靠的问题。文中根据能量守恒定律提出了一种五连杆弹簧操动机构的凸轮优化设计方法。该方法根据合闸过程中不同位移点的阻力矩,通过设置凸轮轮廓线上对应点动力矩的裕度,使输出力特性根据负载特性的变化进行合理匹配,以获得理想的合闸速度,提高合闸可靠性。试验验证表明,该方法优化后的凸轮即使在合闸弹簧衰减20%能量后,依然能够合上,有效解决了五连杆弹簧操动机构依靠经验设计时合闸速度大、合闸不可靠的问题,并已在工程实际中得到广泛应用。At present,the optimal design of cam of domestic spring operating mechanism is for the four-linkage mechanism,and the research on the optimal design of cam of the five-linkage mechanism is less.At present,the design of cam of the five linkage mechanism still relies on experience,which cannot reasonably match the output force characteristics with the load characteristics,resulting in the problems of high closing speed and unreliable closing of the five-linkage mechanism.According to the law of conservation of energy,a kind of optimal design method of cam of five-linkage spring operating mechanism is proposed in this paper.Based on the resistance torque of different displacement points in the closing process,this method sets the margin of the dynamic torque of the corresponding point on the cam contour line so that the output force characteristic is reasonably matched in accordance with the variation of the load characteristic to obtain the ideal closing speed and improve closing reliability.It is shown by test verification that the cam,after the optimization by the method,can still close even after the closing spring has attenuated 20%of its energy.This effectively solves the problem of high closing speed and unreliable closing when the five-linkage spring operating mechanism is designed based on experience,and this method has been used widely in actual project.

关 键 词：五连杆弹簧操动机构 凸轮优化 负载合理匹配 高可靠性 

分 类 号：TM561[电气工程—电器]