基于FEM和正交试验的茶园修剪机刀片的优化  

Optimization of Tea Garden Trimmer Blade Based on FEM and Orthogonal Test

作　　者：易文裕 王攀 庹洪章 卢营蓬 余满江 Yi Wenyu;Wang Pan;Tuo Hongzhang;Lu Yingpeng;Yu Manjiang(Sichuan Research&Design Institute of Agricultural Machinery,Chengdu 610066,China;Key Laboratory of Agricultural Equipment Technology for Hilly and Mountainous Areas,Ministry of Agriculture,Chengdu 610066,China)

机构地区：[1]四川省农业机械研究设计院,成都610066 [2]农业部丘陵山地农业装备技术重点实验室,成都610066

出　　处：《农机化研究》2020年第1期8-13,共6页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2018YFD0700500);成都市农业技术研发项目(2015-NY00353-NC);公益性行业(农业)科研专项(201303012)

摘　　要：修剪是茶树等经济类树木种植综合管理中的重要环节,切口质量的好坏对其产量和质量具有直接的影响。为降低修剪过程中刀片的剪切阻力、提高切口质量,采用FEM数值方法和APN1211E-U功率分析仪进行了茶树枝修剪的仿真与试验,仿真峰值功耗与试验峰值功耗误差为5.7%,验证了茶树枝修剪仿真模型的准确性。运用该仿真模型对刀片间隙γ、切割速度υ进行了虚拟正交试验,并建立了该参数与峰值阻力的数学模型,得出在刀片间隙γ为0.01mm、剪切速度υ为1.414 7m/s、修剪直径为3.5mm时,茶树枝峰值阻力最小为5.160 7N,为茶园修剪机刀具的设计和优化提供了方法和思路。Pruning is an important link in the comprehensive management of economic tree planting such as tea trees.The quality of the incision has a direct impact on the yield and quality of cash crops.In order to reduce the shear resistance of the blade during the trimming process and improve the quality of the cut,the simulation and experiment of tea branch pruning were carried out by FEM numerical method and APN1211 E-U power analyzer.The simulated peak power consumption and the experimental peak power consumption error are 5.7%,which verifies the accuracy of the tea tree branching simulation model.The simulation model is used to study the virtual orthogonal test of the blade clearanceγand cutting express v of the blade,and the mathematical model of the parameter and peak resistance is established.It is concluded that the blade clearanceγis 0.01 mm,the shear velocity v is 1.4147 m/s,and the peak resistance is minimum 5.1607 N when trimmed a 3.5 mm branch,which provides a method and idea for the design and optimization of the hedge trimmer tool.

关 键 词：刀片 有限单元法 正交试验 剪切 优化 茶园修剪机 

分 类 号：S224[农业科学—农业机械化工程]