【作者】 邢军军； 李善军； 张衍林；

【Author】 Xing Junjun1,Li Shanjun2,Zhang yanlin3(College of Engineering,Huazhong Agricultural University,Wuhan 430070,China)

【机构】 华中农业大学工学院；

【摘要】 为解决山地果园果实、肥料和农药等运输过程中劳动强度大、效率低,而国内尚无可选机型的生产实际问题,设计研制了7YGS-45型双轨道果园运输机,重点解决了钢丝绳与驱动轮对配合实现摩擦驱动、抱轨与碟刹配合实现制动、防止运输机侧滑和上跳、防止钢丝绳在弯道中上抬与拉直、拖车自适应坡度调节等关键技术问题。搭建了自动控制测试平台对运输机运行参数和结构参数进行优化。分析驱动机构的轮对结构参数在载重、预紧力、运行速度和坡度角度不同情况下,驱动机构主轴扭矩与转速、驱动轮槽磨损率、钢丝绳打滑率等指标的变化情况。为运输机运行性能的优化提供试验条件和理论分析依据,具有应用价值。试验表明,运输机最大爬坡角度47°、最小水平转弯半径8m,平均运行速度1.0m/s。该机可适用于山地果园中运输果实、肥料等,也可搭载喷雾机或修剪机械等进行作业。更多还原

【Abstract】 In order to solve the problem of high labor intensity and low efficiency during the working practice of transporting fruits、 fertilizers and pesticide in mountain orchard,the authors have developed the 7YGS-45 type self-propelled dual-track orchard transport,and mainly solved the following key technical problems:the steel wire rope and a couple of driving wheels cooperated friction drive,the track holding and disc braking cooperated braking,anti-side slipping and anti-jumping,anti rope rising and anti rope straightening during the rail curves,trailer’s slope adaptive adjustment,etc.The automatic control test platform is constructed to make the optimization of operating parameters and structure parameters.The platform analyzes the changing index of wheel pair’s structural parameters of the driving mechanism,when under the different situations of loading capacity,pre-load,running-speed,and slope angle;spindle torque and rotating-speed of the driving mechanism;wear rate of driving wheel’s groove;and slipping rate of steel wire rope.The platform provide test conditions and theoretical analysis basis for optimization of the transport’s performance,which absolutely has application values.The experimental results indicate that,the transport machine can run smoothly on the paved tracks,with the maximum climbing slope of 47°,minimum horizontal turning radius of 8m,the average speed is 1.0m/s.The transport machine can not only be used in the mountain orchard to transport the fruits and fertilizers,but also can be equipped with spraying operations,cutting operations,or other operations.更多还原