多齿轮并联盾构驱动系统啮合误差对负载均匀性影响分析  

Analysis of Influence of Meshing Error of Multi-gear Parallel Shield Drive System on Load Uniformity

作　　者：徐知宽 王秋平 王昊天 李万莉[1] Wang Qiuping;Wang Haotian;Xu Zhikuan

机构地区：[1]同济大学机械与能源工程学院,201804 [2]上海隧道工程有限公司机械制造分公司装备设计研究院

出　　处：《工程机械》2024年第8期78-87,I0014,共11页Construction Machinery and Equipment

摘　　要：盾构刀盘在掘进时会承受不均匀变化的大负载,因此对盾构刀盘的驱动系统的寿命和可靠性提出了很高的要求。以多齿轮并联盾构驱动系统为研究对象,建立含误差激励的非线性动力学模型。采用蒙特卡洛法计算齿轮啮合误差,采用龙格库塔法求解微分方程,通过计算均载系数,分析齿轮加工误差和装配误差对负载均匀性的影响。研究表明:加工误差会导致啮合副产生周期性偏载和冲击,而装配误差则会导致盾构驱动齿轮持续稳定偏载;盾构各驱动齿轮加工误差相位差越大,偏载越严重;齿圈加工误差对各啮合副的作用是均等的,偏载程度只与误差幅值正相关而与相位无关。指出在实际生产中应尽可能提高齿圈加工、装配精度,驱动齿轮可采用选配装配法。Shield cutter head will be subjected to large loads with non-uniform variations during excavation,so the life and reliability of the drive system of shield cutter head are highly demanded.Taking the multigear parallel shield drive system as the research object,a nonlinear dynamics model with error excitation is established.The Monte Carlo method is used to calculate the gear meshing error,the Runge-Kutta methods are used to solve the differential equations,and by calculating the uniform load coefficient,the influence of gear machining error and assembly error on the load uniformity is analyzed.The research shows that,the machining error will lead to periodic unbalanced loads and impacts on the meshing pairs,while the assembly error will lead to continuous and stable unbalanced loads on the shield drive gears.The larger the phase difference of the machining error of the shield drive gears,the more serious the unbalance loads.The machining error of the tooth ring has an equal effect on each meshing pair,and the degree of unbalanced loads is positively correlated only with the magnitude of the error,but not with the phase.It is pointed out that,in the actual production,the machining accuracy and assembly accuracy of the tooth ring shall be improved as much as possible,and the drive gear can adopt the optional assembly method.

关 键 词：多齿轮并联 盾构 齿轮动力学 载荷均匀性 啮合误差 

分 类 号：TH132.41[机械工程—机械制造及自动化]