共享单车锁用减速器输出级齿轮副疲劳寿命分析  

Fatigue Life Analysis of Output Gear Pair of Reducer for Shared Bicycle Lock

作　　者：刘赣华[1] 刘宝金 李佳宏 LIU Gan-hua;LIU Bao-jin;LI Jia-hong(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou 341000,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000

出　　处：《机械设计与制造》2024年第6期276-281,共6页Machinery Design & Manufacture

基　　金：江西省教育厅科学研究项目(GJJ180454)。

摘　　要：共享单车的落地和普及促进了共享单车锁用减速器的发展和应用,而输出级齿轮副的疲劳寿命决定了减速器的有效寿命,针对传统试验测试齿轮疲劳寿命方法的不足,提出一种基于有限元仿真的输出级齿轮副寿命预测方法。在ANSYS软件中建立齿轮副有限元模型,并改进齿轮副结构参数以改善齿轮副间的受力情况。在ADAMS软件中对齿轮副进行动力学仿真获取齿轮副间的动态接触力,并以此作为载荷谱在nCode DesignLife软件中对齿轮副疲劳寿命做出预测,最后通过试验验证有限元仿真方法的正确性。结果表明:改进从动轮压力角后齿轮副主动轮应力减小了30.18%,从动轮应力减小了38.71%;改进压力角后齿轮副疲劳寿命增加了124.23%,满足设计要求;齿轮副试验寿命结果与仿真预测寿命结果误差小于10%,在可接受范围内。The landing and popularization of shared bicycles has promoted the development and application of reducers for shared bicycle locks.And the fatigue life of the output gear pair determines the effective life of the reducer.In view of the shortcomings of the traditional test method of the fatigue life of gears,proposes a life prediction method of output stage gear pair based on finite el-ement simulation.The finite element model of the gear pair is established in ANSYS software,and the structural parameters of the gear pair are improved to ameliorate the force between the gear pairs.Through the dynamic simulation of gear pairs in AD‐AMS software,obtain the dynamic contact force between gear pairs,and use this as a load spectrum to predict the fatigue life of gear pairs in nCode DesignLife software,finally the correctness of the finite element simulation method is verified through experi-ments.The results show that after improving the pressure angle of the driven wheel,the stress of the driving wheel of the gear pair is reduced by 30.18%,and the stress of the driven wheel is reduced by 38.71%.The fatigue life of the gear pair is increased by 124.23%after the pressure angle is improved,which meets the design requirements.The deviation between the test life results of the gear pair and the simulation predicted life results is less than 10%,which is within the acceptable range.

关 键 词：减速器 结构参数 动力学仿真 疲劳寿命 

分 类 号：TH16[机械工程—机械制造及自动化] TH132.46