摘要
针对汽车轮边行星减速系统在行驶过程中由于支撑条件恶化造成的振动噪声问题,在考虑轴承运转位移变形的基础上,引入压力角和重合度随时间变化的概念,建立齿圈固定,太阳轮与支架分别为动力输入,输出的轮边行星齿轮系统动力学模型,研究了压力角和重合度随时间变化和为常数两种情况下的模型动力学响应变化规律。分析结果表明,压力角和重合度可以分别与时间建立相关数值关系,太阳轮与行星轮压力角和重合度均随时间呈现波动变化;啮合变形在压力角和重合度为变量时的动态响应要比压力角与重合度为常数时存在更多的频率成分;在轴承刚度越小的状态下,齿轮啮合变形在动态响应方面存在较多的频率成分;行星齿轮总成在压力角和重合度随时间变化的条件下比压力角和重合度为常数时的动态径向位移较大,常数条件下太阳轮径向位移近似为直线。
For automobile wheel planetary gear system noise and vibration problems in the process of moving due to the deterioration caused by the support conditions, considering the concept of displacement deformation bearing operation, based on the introduction of coincidence degree pressure angle and change over time, the establishment of a fixed ring gear, sun gear and the bracket are power input, output wheel planetary gear system dynamic model to study the coincidence degree pressure angle and change over time, and the two kinetic constants for the model in response to changes in case law. The results show that coincidence degree, pressure angle and related numerical relationship can be established separately with time, the sun gear and the planetary gear pressure angle and contact ratio show fluctuations over time, in the state of the smaller bearing stiffness, deformation of the gear mesh frequency components exist in many aspects of the dynamic response, the planetary gear assembly and the angle of overlap of the pressure change over time than the pressure in the conditions of dynamic radial angle and a constant degree of overlap when the displacement is large, the radial displacement of the sun wheel constant conditions is approximately linear.
出处
《机械传动》
CSCD
北大核心
2014年第7期41-45,共5页
Journal of Mechanical Transmission
关键词
轮边减速器
行星齿轮
压力角
重合度
动态特性
Wheel reducer Planetary gear Pressure angle Contact ratio Dynamic characteristic
