船式拖拉机气层减阻结构设计研究  

Research on Drag Reduction of Boat-type Tractor Using Air Layer

作　　者：张三强[1,2] 程伦 邹星 陈源 周红宇[1] Zhang Sanqiang;Cheng Lun;Zou Xing;Chen Yuan;Zhou Hongyu(Hubei University of Technology,Wuhan 430068,China;Hubei Agricultural Machinery Engineering Research and Design Institute,Wuhan 430068,China)

机构地区：[1]湖北工业大学,武汉430068 [2]湖北省农业机械工程研究设计院,武汉430068

出　　处：《农机化研究》2023年第8期240-245,共6页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2018YFD0301300);湖北省重点研发计划项目(2020BBB063)。

摘　　要：针对船式拖拉机水田泥浆环境行驶阻力问题,展开船底气层减阻方法研究,设计了三角形、矩形和弧形3种不同肋条结构的船底,并通过仿真方法对其减阻效果和气层稳定性进行了深入分析。研究结果表明:气层减阻方法能有效降低船式拖拉机在泥浆环境中的行驶阻力,肋条结构船底能有效保持船底气层覆盖稳定性。其中,三角形肋条结构船底减阻效果较好,绝对减阻率为23.4%,且船底气层稳定性较好;在横倾角为3°时,气层覆盖率值可达到92%,绝对减阻率为14.7%。Aiming at the problem of the resistance of the boat tractor in the mud environment,the research on the drag reduction method of the bottom gas layer is carried out.Three different ribbed structures of triangle,rectangle and arc are designed.The drag reduction effect and the stability of the gas layer are carried out through simulation methods.In-depth analysis,the research results show that:the air layer drag reduction method can effectively reduce the running resistance of the ship-type tractor in the mud environment,and the ribbed structure of the ship bottom can effectively maintain the air layer at the bottom of the ship.Covering stability.The triangular rib structure has a better drag reduction effect at the bottom of the ship,with absolute drag reduction rate of 23.4%and a better bottom gas layer stability.When the heel angle is 3 degrees,the gas layer coverage value can reach 92%,its corresponding absolute drag reduction rate is 14.7%.

关 键 词：船式拖拉机 气层减阻 槽型结构 水田 

分 类 号：S219.81[农业科学—农业机械化工程]