重型牵引车传动系动力学特性  

The Study on the Dynamic Characteristic of Tractor Transmission System

作　　者：肖启瑞[1] 陈黎明[1] 黄晋 

机构地区：[1]广东机电职业技术学院汽车学院,广州510515 [2]上汽通用五菱博士后流动站,广西柳州545007

出　　处：《重庆理工大学学报（自然科学）》2013年第11期23-27,共5页Journal of Chongqing University of Technology：Natural Science

基　　金：广州市科技计划项目(12A52231618)

摘　　要：基于对车辆传动系统的动力学分析，建立了重型牵引车传动系统的计算模型，列出了系统的刚度矩阵和转动惯量矩阵。通过计算得到了传动系统的各阶固有频率。同时基于上述理论分析和系统计算模型，对传动系中转动惯量、刚度易更改的总成进行参数影响分析。计算结果表明：该牵引车动力传动系统的各阶固有频率对应的临界转速会在各挡位低速区间引起振动；将怠速提高，同时将其余各挡常用转速限定在1200—3500r／min间，扭振效应将得到抑制；增大传动系部件转动惯量会降低系统的固有频率。增大扭转刚度可提高固有频率。Mathematical model of tractor transmission system is presented based on dynamic analysis. All the parameters of the system are calculated in detail including stiffness matrix and inertia matrix. The inherent frequency of system is obtained. The results of simulation show that the critical speeds corresponding to system inherent frequencies would cause vibration during low speed section. The tor-sion vibration effect would be under control in case that the idling is boosted and the common speed of each shift can be limited from 1 200 r/min to 2 500 r/min. The increase on inertia of transmission parts can reduce system frequency. On the contrary, increase on the torsion stiffness can boost system frequency. The product remodel could be supported by the conclusion.

关 键 词：传动系统 动态特性 固有频率 

分 类 号：U469.3[机械工程—车辆工程]