人字齿轮系统振动传递分析优化与试验验证

Analysis Optimization and Experimental Verification of Herringbone Gear Transmission System

为了有效分析人字齿轮传动系统振动传递特性、合理预估箱体结构振动噪声,建立考虑箱体内润滑油流固耦合的齿轮箱有限元模型,将文献[5]计算分配到各支撑轴承的时变动态载荷施加到箱体各轴承孔中心耦合参考点,由ANSYS软件的瞬态动力学分析模块对齿轮箱进行动态响应分析,对得到的齿轮箱考察结点结构振动加速度进行预估。选取改进的自适应遗传算法对人字齿轮小轮齿面进行多动力学目标的齿面三维优化设计,优化结果表明在给定优化载荷工况下,轮齿端面啮合线方向相对振动加速度及齿轮箱体机脚参考点结构振动加速度均得到明显下降。搭建人字齿轮传动系统封闭功率流试验台,利用海德汉圆光栅编码器高精度特性对人字齿轮端面啮合线向相对振动进行测量,加速度计测量箱体轴承座、箱体机脚位置振动加速度,以此验证人字齿轮动力系统振动传递理论及齿面三维修形减振效果。

Aiming at effectively analyzing on power transmission processing of herringbone gear trains system, reasonably estimating the gearbox structure vibration and noise, finite element model is put forward considering fluid-solid coupling of gearbox. Time-varying dynamic loads calculating from the Ref. [5] are applied on each center coupling point of bearing holes. Dynamic response analysis is carried out on the gearbox by the transient dynamic analysis module of ANSYS software, and structural vibration acceleration of the gearbox investigation nodes is estimated. Tooth dimensional optimization design with multiple dynamic targets is carried out by the adaptive genetic algorithm. Optimization results show the vibration acceleration of teeth meshing line direction and gearbox machine feet are both significantly reduced under given load condition. Herringbone gear transmission experiment testing system with closed power flow is set up to verify the theoretical analysis. In order to verify herringbone gear dynamic systems vibration transmission theory and tooth surface modification effects, teeth meshing line direction vibration is measuring through high precision angle encoders of Heidenhain, and vibration acceleration of bearing seat and machine feet are measured by accelerometer.