农用仿形履带式动力底盘设计与试验  

Research on All-terrain Profiling Crawler Power Chassis

作　　者：赵建柱[1] 王枫辰[1] 于斌[1] 王德成[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业机械学报》2014年第9期20-24,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：公益性行业(农业)科研专项经费资助项目(201203024)

摘　　要：设计了一种具有仿形功能的农用动力底盘。该底盘由机架、悬架系统、导向轮、驱动轮、支重轮、传动装置、履带及控制系统等组成。每个减振装置上装有螺旋弹簧液压减振器,其摆臂能够随地面不平度的变化以及底盘承重情况,在车架一侧纵向平面内摆动,悬架系统具有变刚度的特性。1∶4模型底盘试验表明,其满载最大爬坡度约为60%,最高作业速度可达3 km/h,在非道路场所行驶时具有良好的地面仿形、平顺性和通过性。To develop the passing ability and the ride comfort of crawler power chassis, a set of new suspension system was designed. Each suspension system has 5 separate damping units, and each one includes a hydraulic cylinder and a coil spring. The mathematic model was built according to the structure and mechanical properties of damping units. It was revealed from Keq- H curve drawn from the mathematic model that the suspension system had nonlinear stiffness characteristic. 1 ： 4 crawler power chassis prototype and the performance tests were made. The chassis could achieve all-terrain profiling and its maximum grade ability was about 60% , its maximum speed was about 3 km/h. From the vibration acceleration curve, the absolute value of vibration acceleration was lower than 2.0 m/s2. The crawler power chassis with new suspension system is good in its passing ability and ride comfort.

关 键 词：农业机械 动力底盘 履带式 仿形 

分 类 号：S219.3[农业科学—农业机械化工程]