摘要
为揭示盾构机刀盘驱动多级行星轮系的动力学特性,考虑到各级之间由于初始啮合位置的不同使啮合刚度和啮合误差均产生相位差,以及各构件支承刚度、时变啮合刚度、啮合误差等影响因素,建立了盾构机刀盘驱动多级行星轮系纯扭转动力学模型并进行了动力学特性分析。固有特性分析表明,多级行星传动系统较单级传动系统呈现出独特多样的振动模态;通过动态响应分析,获得了各级传动动态啮合力的时域及频域响应。结果表明,中、高速级传动的激振力频率较系统的固有频率相近,易引起系统的谐振,应在设计中特别注意。并求得各级传动的动载系数,为该行星轮系的动态优化设计奠定了基础。
A purely torsional dynamic model of multi-stage planetary gear trains is developed to investigate the dynamic characteristics of the transmission system in shield machine cutter drive.In the model,phase difference between mesh stiffness and error among each stage caused by different initial mesh positions is considered,and other factors such as component bearing stiffness,time-varying mesh stiffness and error are considered as well.Inherent characteristic analysis shows there are more unique and diverse vibration modes in multi-stage planetary gear trains than in single-stage planetary gear trains.Through dynamic response analysis,time-domain and frequency-domain response of dynamic meshing force of each stage is obtained.As the frequency of exciting force of medium-speed and high-speed stage is in proximity to the natural frequency of the system,harmonic resonance tends to occur,which needs to be paid great attention to.Dynamic factors of each stage are also computed and prepare the ground for the dynamic optimizing design of planetary gear trains.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第6期26-34,共9页
Journal of Chongqing University
基金
国家高技术发展计划资助项目(2007AA041802)
关键词
多级行星轮系
固有频率
动态响应
动载系数
multi-stage planetary gear trains
natural frequencies
dynamic response
dynamic factor
