农用履带收割机典型路况下的动力学仿真分析  

Dynamics simulation of agricultural crawler harvester under typical road condition

作　　者：王保卫[1] 冯勇[2] 郑雷[3] 牛亚松[4] 

机构地区：[1]鲁东大学交通学院,山东烟台264025 [2]南京工程学院机械工程学院,江苏南京211167 [3]盐城工学院机械工程学院,江苏盐城224051 [4]天津工程机械研究院,天津300409

出　　处：《机械设计》2015年第10期77-81,共5页Journal of Machine Design

基　　金：江苏省自然科学基金资助项目(BK20131341);江苏省大型工程装备检测与控制重点建设实验室资助项目(JSKLEDC201407);江苏省产学研合作前瞻性联合研究资助项目(BY2015057-22)

摘　　要：为全面分析某型农用履带收割机在典型路况下的动力学特性,以多刚体系统动力学理论为基础,建立了该型收割机的多体系统动力学模型,通过理论结果与仿真结果的对比验证了模型及方法的真实性,并在此基础上开展了B级随机路面与含垂直土丘等极限路况下的行驶动力学仿真研究。结果表明：车辆以两种典型速度通过B级随机路面时,除了少数起伏较大的位置上加速度值较大外,其他位置上的垂向加速度在3个重力加速度以下;当该收割机以典型车速通过0.1m障碍时,车速越高,车体的垂向加速度越大,车体的振动频率越大;而以典型速度分别通过0.1 m和0.15 m障碍时,车速相同情况下,随着障碍高度的增加,车体的最大垂向加速度值呈1.5~2.2倍左右的增加。所述研究方法及结果可为该类农用履带收割机的研发及改进提供参考。The aim of this paper was to analyze the dynamic characteristics of a certain type agricultural crawler harvester under typical road conditions. A dynamical model of the harvester was established based on multi-rigid body system dynamics.The model and methods were verified according to the theoretical and simulation results. Then, the dynamics simulation research on B class random road and vertical obstacle road were carried out. Analysis results indicated that the vertical acceleration on most locations were under three gravity except a few locations when vehicle driving through B class random road. The greater acceleration and larger vibration frequency were found with the higher vehicle speed when the vehicle passing by the0.1m obstacle with typical speed. Moreover, with the increase of obstacle height, the maximum vertical acceleration increases about 1.5 ~2.2 times when harvester driving with the same speed through 0.1m and 0.15 m obstacles respectively. This method and conclusions could be used as theoretical references for the development and improvement of this type of crawler harvesters.

关 键 词：履带收割机 多刚体系统动力学 振动 行驶动力学仿真 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]