丘陵山地拖拉机液压驱动系统设计与仿真  

Design and Simulation of the Hydraulic Driving System of Hilly Tractors

作　　者：扈凯 张文毅 刘宏俊 李坤 HU Kai;ZHANG Wenyi;LIU Hongjun;LI Kun(Nanjing Institute of Agricultural Mechanization,Ministry of Agriculture and Rural Affairs,Nanjing Jiangsu 210014,China)

机构地区：[1]农业农村部南京农业机械化研究所,江苏南京210014

出　　处：《机床与液压》2021年第16期93-97,共5页Machine Tool & Hydraulics

基　　金：农业农村部南京农业机械化研究所所级重点项目(CAAS-NRAM-SJ-201903);中国农业科学院基本科研业务费专项(S201907);国家重点研发计划(2017YFD0700704)。

摘　　要：为解决传统拖拉机在丘陵山地的适应性问题,设计一种丘陵山地拖拉机的全液压驱动系统。根据实际需求,提出全液压驱动系统的技术方案。该驱动系统采用单泵四马达的闭式回路,并使用同步马达防止车轮滑转。计算了主要液压元器件的参数,在AMESim软件中建立该液压系统模型并进行仿真。仿真结果表明:液压系统的工作压力、输出扭矩、输出转速分别为19.204 MPa、339.01 N·m和62.14 r/min,与设计参数相符合,验证了系统的可行性;在同步马达不工作时,拖拉机一个车轮滑转会使得系统丧失驱动能力,系统工作压力仅为1.838 MPa;当同步马达强制分流时,系统工作压力变为19.197 MPa,可以使得拖拉机重新恢复驱动力。研究方法可为其他类型的农业机械液压驱动系统设计提供参考。In order to solve the inadaptability problems of traditional tractors in hilly areas,a new hydraulic driving system for hilly tractor was designed.Based on the actual demands,the technical scheme of the hydraulic driving system was proposed.In the hydraulic driving system,closed circuit of one pump and four motors was adopted and the synchronous motor was used to prevent the wheels from slipping.The parameters of main hydraulic components were calculated,and the designed hydraulic system was modeled and simulated in AMESim software.The simulation results show that the working pressure,output torque and output rotation speed of the hydraulic system are 19.204 MPa、339.01 N·m and 62.14 r/min respectively,which are in accordance with the design parameters,and the feasibility of the system are verified;when the synchronous motor is out of work,the slip of one of the tractor wheels will cause driving capacity loss,the operating pressure is only 1.838 MPa;if the synchronous motor is compelled to divide flow at this time,the operating pressure increases to 19.197 MPa,and then the tractor will regain driving capacity.The research methods provides some references for hydraulic driving system design of other agricultural machinery.

关 键 词：丘陵山地拖拉机 液压驱动系统 同步马达 AMESIM仿真 

分 类 号：S219.2[农业科学—农业机械化工程]