机收棉秆切割装置的设计与试验

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...

Design and Test of the Cutting Device of the Machine Collecting Rod

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.