摘要
针对联合收割机在田间作业时路面不平度对整车动力系统产生的影响,以及动载荷的随机性对行走操控性的影响,本文主要对联合收割机传动系统进行设计与仿真。给出了联合收割机驱动系统的工作原理及主要元件参数,并基于AMESim仿真软件,建立传动系统液压仿真模型,从液压系统的起步、田间作业、转场越障3种工况分析液压系统的性能。仿真结果表明,车辆起步过程加速平稳,液压系统的压力输出和流量符合设计车辆实际工况的需求;田间作业时,闭式静液传动系统中泵和马达具有较高的容积效率;在转场越障过程中,泵和马达流量可保持相对稳定,说明收割机静液压传动系统在跨越障碍时,有着良好的通过性能。该设计能够实现整车平稳工作,提高收割机作业时越障能力和工作效率,满足设计要求。该研究具有广泛的应用前景。
Aiming at the fact that the unevenness of the road surface during field operation has a great impact on the combine harvesters power system and that the walking maneuverability is impacted by the randomness of the dynamic load,this paper mainly designs and simulates the drive system of the combine harvester.With the given working principle and main component parameters of the combine harvester drive system,and based on the AMESim simulation software,a hydraulic simulation model of the transmission system is established.The hydraulic system is then analyzed during three operating conditions:the start of the hydraulic system,field operation,and surmounting obstacles.The simulation results show that the vehicle accelerates smoothly during the starting process,and the pressure output and flow of the hydraulic system meet the requirements of the actual working conditions of the designed vehicle.During field operation,the pump and motor in the closed hydrostatic transmission system are of high volumetric efficiency.During the obstacle course,the flow of the pump and motor can be kept relatively stable,which indicates that the hydrostatic drive system of the harvester has good passing performance when it crosses the obstacle.The design effectively reduces the impact of the load on the transmission system,realizes the smooth operation of the whole vehicle,improves the obstacle surmounting ability and working efficiency of the harvester during operation,and meets the design requirements.This research has a wide range of application prospects.
作者
姜文瀚
王玉林
耿超
李志峰
JIANG Wenhan;WANG Yulin;GENG Chao;LI Zhifeng(School of Electromechanic Engineering,Qingdao University,Qingdao 266071,China)
出处
《青岛大学学报（工程技术版）》
CAS
2020年第2期110-115,124,共7页
Journal of Qingdao University(Engineering & Technology Edition)
