某小型越野车变速箱齿轮的设计与优化  

Design and Optimization of Transmission Gear for a Small Off-road Vehicle

作　　者：吴兢 龚青山[2] 曹占龙[2] 秦毅 张红亮 WU Jing;GONG Qingshan;CAO Zhanlong;QIN Yi;ZHANG Hongliang(College of Science and Technology,Hubei University of Automotive Technology,Shiyan Hubei 442002,China;School of Mechanical Engineering,Hubei University of Automotive Technology,Shiyan Hubei 442002,China;Hubei Guorui Intelligent Equipment Co.,Ltd.,Shiyan Hubei 442000,China)

机构地区：[1]湖北汽车工业学院科技学院,湖北十堰442002 [2]湖北汽车工业学院机械工程学院,湖北十堰442002 [3]湖北省国瑞智能装备股份有限公司,湖北十堰442000

出　　处：《汽车零部件》2022年第10期1-6,共6页Automobile Parts

基　　金：2021年国家级大学生创新训练项目(202113248001);国家自然科学基金项目(52075396);工信部工业互联网创新发展工程项目(TC200A00W,TC200802C);湖北省重点研发计划项目(2020BAA005,2021BAB046,2021BAB016);湖北省教育厅重点项目(D20211803);湖北汽车工业学院博士基金项目(BK202001)。

摘　　要：为设计出一款适用于小型越野车且性能优良的变速箱,本文结合齿轮设计方法和有限元法对变速箱齿轮进行设计与优化。首先通过越野车发动机参数及动力学参数确定出整车的传动比,进而确定各挡位齿轮参数并进行建模;然后对变速箱齿轮进行动力学分析从而验证其可靠性;最后基于动力学分析结果,以单元密度为变量、一阶固有频率不小于啮合频率为约束、齿轮轻量化为目标对变速器齿轮进行拓扑优化。优化后的齿轮质量较优化前减少22.4%,且其动态和静态性能均满足强度要求。In order to design a gearbox with excellent performance suitable for small off-road vehicles,the gearbox gear was designed and optimized by combining the gear design method and the finite element method.Firstly,the transmission ratio of the whole vehicle was determined through the engine parameters and dynamic parameters of the off-road vehicle,and then the gear parameters of each gear were determined and modeled.Secondly the dynamic analysis of the gearbox gear was performed to verify its reliability.Finally,based on the dynamic analysis,the topology optimization of the transmission gear was carried out with the element density as the variable,the first-order natural frequency not less than the meshing frequency as the constraint,and the gear weight reduction as the goal.The weight of the optimized gear is reduced by 22.4%compared with the before optimization,and its dynamic and static performances meet the strength requirements.

关 键 词：小型越野车 变速箱齿轮 动力学分析 拓扑优化 

分 类 号：U463.212.42[机械工程—车辆工程]