Dynamic Characteristics Analysis of High Contact Ratio Planetary Gear Transmission
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摘要: 针对行星齿轮传动系统,采用集中质量法建立太阳轮浮动的动力学模型,考虑时变啮合刚度和综合啮合误差的影响,推导得出系统的动力学微分方程。采用变步长Runge-Kutta数值积分方法求解动力学微分方程。对比研究了高重合度行星齿轮传动系统和普通行星齿轮传动系统的动态时域响应,动载特性和均载特性。分析结果表明:高重合度行星齿轮传动振动幅值较低,动载荷较小,均载特性较好,因此传动更加平稳,噪声减小,传动性能更好。Abstract: By using lumped-mass method, the dynamic model of planetary gear transmission with floating sun-gear was established; the time-variant stiffness and meshing error were considered in the model. The motion differential equation of the model was presented and solved by Runge-Kutta numerical integration method with variable steps. Dynamic time-domain responses, dynamic loads and load sharing characteristics of the high contact ratio planetary gear transmission and general planetary gear transmission were both investigated for comparison. The results indica-ted that the high contact ratio planetary gear transmission had lower vibration amplitude, smaller dynamic load and dynamic load-sharing coefficient. So the high contact ratio planetary gear drive had better performance with smoot-her transmission, lower noise, and its load distribution is more uniform.
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Key words:
- high contact ratio /
- planetary gear transmission /
- dynamic characteristics
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