履带式拖拉机液压驱动系统的设计  

Design of Hydraulic Drive System of Tracked Tractor

作　　者：肖文颖[1] 童杰 Xiao Wenying;Tong Jie(Guangdong Polytechnic of Science and Technology,Zhuhai 519090,China)

机构地区：[1]广东科学技术职业学院,广东珠海519090

出　　处：《农机化研究》2023年第11期253-258,共6页Journal of Agricultural Mechanization Research

基　　金：广东省教育厅高职院校产教融合创新平台项目(2021CJPT015);广东省普通高校工程技术中心项目(2021GCZX018)。

摘　　要：与传统拖拉机的机械驱动装置相比,采用液压驱动系统通过改变变量泵的排量实现无级变速,可极大地简化整机系统结构。为了解决拖拉机工作速度调整范围小、操作复杂、田间作业安全性低等主要问题,根据拖拉机田间作业要求,设计了一种拖拉机的液压驱动系统。对拖拉机进行受力和运动分析,并进行拖拉机发动机及液压驱动系统部件的设计与选型,建立了驱动系统性能试验台。同时,对拖拉机驱动系统的牵引性能进行田间试验,结果表明:当发动机处于最大扭矩点1700r/min时,拖拉机在I挡输出的最大理论牵引力为11456.3N,拖拉机在II挡输出的最大理论牵引力为10959.2N。试验结果表明:设计的拖拉机液压驱动系统具有足够的动力储备,可以满足田间农业生产中的大负荷工作要求。Tractors play a very important role in agricultural production,engineering construction and military fields.Compared with the mechanical drive device of the traditional tractor,the hydraulic drive system realizes the stepless speed change by changing the displacement of the variable pump,which greatly simplifies the system structure of the whole machine.In order to solve the main problems such as small adjustment range of tractor working speed,complicated operation and low field operation safety,according to the requirements of tractor field operation,a hydraulic drive system for tractor was designed.The engine and hydraulic drive system components are designed and selected,the drive system performance test bench is established,the crawler tractor is selected for the field test platform,and the field test is carried out on the traction performance of the tractor drive system.The research results show that when the engine is at the maximum torque point at 1700r/min,the maximum theoretical tractive force output by the tractor in gear I is 11456.3N,and the maximum theoretical tractive force output by the tractor in gear II is 10959.2N.The hydraulic drive system of the tractor researched and designed has sufficient power reserve to meet the requirements of large-load work in field agricultural production.

关 键 词：拖拉机 液压驱动 系统设计 优化 

分 类 号：S219.032.1[农业科学—农业机械化工程]