基于响应面法的拉拽式胡萝卜根茎分离试验研究  

Experimental study on pull type carrot root-stem separation based on response surface method

作　　者：曾功俊 陈建能[2,3] 夏旭东 叶军[1,2] 何也能 Zeng Gongjun;Chen Jianneng;Xia Xudong;Ye Jun;He Yeneng(Zhejiang Industry Polytechnic College,Shaoxing,312000,China;College of Mechanical Engineering and Automation,Zhejiang Sci-Tech University,Hangzhou,310018,China;Zhejiang Province Key Laboratory of Transplanting Equipment and Technology,Hangzhou,310018,China)

机构地区：[1]浙江工业职业技术学院,浙江绍兴312000 [2]浙江理工大学机械与自动控制学院,杭州市310018 [3]浙江省种植装备技术重点实验室,杭州市310018

出　　处：《中国农机化学报》2023年第9期1-8,共8页Journal of Chinese Agricultural Mechanization

基　　金：国家自然科学基金资助项目(51805487);浙江工业职业技术学院专业学科一体化项目(XKC202212009)。

摘　　要：针对拉拽式胡萝卜收获机存在胡萝卜损伤率高、根茎分离效果差等问题,设计基于伺服电动机驱动的拉拽式胡萝卜根茎分离试验台。以驱动圆盘转速、拉拽杆运动加速度、拉拽杆与输送带夹角为试验因素,以胡萝卜根茎分离成功率和胡萝卜损伤率为响应值,利用Design-Expert 8.0软件,采用Box-Behnken试验法设计三因素三水平试验,分别建立各因素与胡萝卜根茎分离成功率和胡萝卜损伤率的回归数学模型。结果表明,胡萝卜根茎分离机构参数对根茎分离效果影响显著,同时得到胡萝卜根茎分离机构最佳参数:驱动圆盘转速为158 r/min、拉拽杆运动加速度为0 m/s 2、拉拽杆与输送带夹角为48°。胡萝卜根茎分离试验表明,在优化后的工作参数下,胡萝卜根茎分离成功率为96.2%,胡萝卜损伤率为5.2%,可为改进拉拽式胡萝卜收获机提供参考。Aiming at the problems of carrot harvester such as high carrot damage rate and poor root-stem separation effect,a pull-type carrot root-stem separation test bench driven by servo motor was designed.The Box-Behnken experimental design with three factors and three levels was performed,parameters such as the acceleration of pull-rod,rotation speed of active disc and Angle between pull-rod and conveyor belt were selected as independent variables,and the success rate and damage rate of carrot root and stem separation were taken as response values.Furthermore,the mathematical model was established,and the main reasons that affected carrot root-stem separation were analyzed as well.The results showed that the motion characteristics of pull-rod had a significant influence on the separation effect of carrot rhizomes.Meanwhile,the optimal motion parameters of carrot root-stem separation mechanism were obtained as follows:the rotation speed of pull-rod driving disk was 158 r/min,the acceleration of pull-rod was 0 m/s 2,and the included angle between pull-rod and conveyor belt was 48°.The experimental results showed that the success rate of carrot root-stem separation was 96.2% and the damage rate was 5.2% under the optimized working parameters,which could provide a reference for improving the pull-type carrot harvester.

关 键 词：参数优化 胡萝卜 根茎分离 响应面法 收获机械 

分 类 号：S225.7[农业科学—农业机械化工程]