摘要
针对从回收地膜中分离的棉秆利用率低、处理不合理,以及现有的粉碎还田机大多存在粉碎不彻底、刀具易磨损等问题,设计了机收棉秆切割装置,介绍了整机结构及工作原理,探究了不同切割方式对物料粉碎效果的影响。为确定动刀把数、输送辊线速度、动刀主轴转速等因素对粉碎长度合格率的影响,以三因素为自变量、粉碎长度合格率为响应指标,建立了因变量和响应指标间的多元数学回归模型,并采用BBD试验设计和响应曲面法对机收棉秆切割装置进行最优化参数探究。结果表明:当动刀把数3把、输送辊线速度0.96m/s、动刀主轴转速750r/min时,棉秸秆粉碎长度合格率为91.1%。对优化参数进行了装置试验,证明优化预测模型可靠,所得到的最优参数组合满足切割装置作业要求,为棉秆粉碎机具的设计提供了参考依据。
In view of the low utilization rate of the cotton stalks separated from the recycled mulch film,unreasonable treatment,and the problems of incomplete smashing and easy wear of the cutters in most of the existing crushing and returning machines,a mechanical cotton stalk cutting device was designed and the whole machine structure and working principle explored the influence of different cutting methods on the crushing effect of materials. In order to determine the influence of factors such as the number of moving knife handles,conveying roller linear speed,and moving knife spindle speed on the qualified rate of crushing length.With three factors as independent variables,the qualified rate of crushing length is the response index,a multiple mathematical regression model between the dependent variable and the response index is established,and the BBD test design and response surface method are used to explore the optimization parameters of the machine harvesting rod cutting device.The results show that the optimal parameter combination is 3 movable knife handles,the linear speed of the conveying roller is 0.96 m/s,and the spindle speed of the movable knife is 750 r/min,the qualified rate of cotton straw crushing length is 91.1%.The optimized parameters are tested and verified by the device,and the optimized prediction model is obtained. The obtained optimal parameter combination meets the operating requirements of the cutting device,which provides a reference for the design of cotton stalk crushing equipment.
作者
潘峰
罗昕
胡斌
何浩猛
郭孟宇
王超
Pan Feng;Luo Xin;Hu Bin;He Haomeng;Guo Mengyu;Wang Chao(College of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832000,China)
出处
《农机化研究》
北大核心
2022年第5期147-151,共5页
Journal of Agricultural Mechanization Research
基金
国家自然科学基金项目(51865051)。
关键词
滑切机构
棉秸秆粉碎
曲面响应法
切割装置
sliding cutting mechanism
cotton straw crushing
surface response method
cutting device
