基于链传动啮合特性的正时链参数设计  

Design of Timing Chain Parameters Based on Chain Transmission Meshing Characteristics

作　　者：李宝林[1] 唐力[1] 初晓亮[1] 范帅[1] 

机构地区：[1]中国矿业大学,徐州221116

出　　处：《中国机械工程》2011年第10期1159-1164,共6页China Mechanical Engineering

摘　　要：用几何法及虚位移原理分析了不同结构参数及不同初始相位角下链的传递特性,并分析了链轮中心距对从动轮角速度变化和链传动不均系数的影响规律,绘制了链传动初始相位几何特征参数对从动轮角速度和链传动不均系数影响的变化趋势。依此分析在其他参数确定的情况下,通过设计阻尼器导板压入量与曲率半径等参数来改变啮合特性以达到最小的角速度波动及变化参量,提出了高速链设计的辅助公式及验证约束方程,为发动机正时链系统设计提供思路和方法。The chain transmission characteristics in different initial phase angles of chain were analyzed from the perspective of geometry and the principles of virtual displacement.In addition,the effects of driven wheel angular velocity and angular inequality coefficient were analyzed with different central distances of two sprockets.The influences of initial phase angle geometry characteristic parameters of the chain transmission on driven wheel angular velocity and angular inequality coefficient degree were analyzed and the fluctuation trend of driven wheel angular velocity was found out at the same time.It is found out when the other parameters are certain,how the damper of timing chain system guides the plate pressure degree and radius curvature in order to obtain the minimum angular velocity changes and angular inequality coefficient of driven wheel.Hence the assistant formula and the validation constraint equation were provided and the ideas,as well as,the methods for the design of engine timing chain system were put forward.

关 键 词：链传动特性 正时链 减振导板 链传动不均系数 

分 类 号：TH11[机械工程—机械设计及理论] TK4[动力工程及工程热物理—动力机械及工程]