基于EDEM甘蔗切割器入土切割仿真试验分析  

Simulation Test Analysis of Cutting into the Soil Based on EDEM Sugarcane Cutter

作　　者：陈晓光 武涛[1] 张增学[1] 吴合槟 周嘉铖 谢聪 刘庆庭[1] Chen Xiaoguang;Wu Tao;Zhang Zengxue;Wu Hebin;Zhou Jiacheng;Xie Cong;Liu Qingting(Ministry of Education,Key Laboratory of Key Technology on Agricultural Machine and Equipment/College of Engineering,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]华南农业大学南方农业机械与装备关键技术教育部重点实验室/工程学院,广州510642

出　　处：《农机化研究》2021年第11期7-13,共7页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2018YFD0701105)。

摘　　要：为了明确甘蔗收割机所用的不同结构切割器以及工作参数(刀盘倾角、行走速度)对进入输送通道泥土量的影响效果,采用离散元分析法建立甘蔗切割器入土切割蔗垄仿真模型,以收集装置收集土壤颗粒质量为试验指标,切割器种类、刀盘倾角、行走速度为试验因素,进行三因素三水平完全交叉分组仿真试验。在入土切割深度为70mm、刀盘转速为650r/min条件下工作,仿真试验结果表明:对进入输送通道泥土量影响因素由主到次关系依次为刀盘倾角(B)、行走速度(C)、切割器种类(A),且三因素对其影响均极其显著。其中,切割器种类A1与A2之间差异不显著,A3与A1、A2之间差异显著,且切割器A3入土切割时泥土带入量最少,切割器A1泥土带入量最多;刀盘倾角各水平之间差异显著,且当刀盘倾角为B1时,泥土带入量最多,刀盘倾角为B3时,泥土带入量最少;行走速度C2与C3水平间差异不显著,C1与C2、C3之间差异显著,且当行走速度为C1时,其泥土带入量最少,行走速度为C3时,其泥土带入量最多。分析切割器入土切割过程可知:土壤颗粒经过切割器作用后,大部分土壤颗粒呈向后抛送状态且不同颗粒向后抛送速度不同,研究结论可为今后的甘蔗切割器结构设计及工作参数优化提供参考。In order to determine the effect of different structural cutters used by sugarcane harvesters and the working parameters(inclination angle of the cutter head, walking speed) on the amount of soil entering the conveying channel, a discrete element analysis method was used to establish a simulation model of sugarcane cutters for cutting into the soil of cane ridges to collect The device collects the soil particle quality as the test index, the type of cutter, the inclination of the cutter head, and the walking speed are the test factors.A three-factor three-level complete cross-grouping simulation test is performed.When working at a cutting depth of 70 mm and a cutter head speed of 650 r/min, the simulation test results show that the factors affecting the amount of soil entering the conveying channel from primary to secondary are, in order, the cutter head inclination angle(B) and walking speed(C), the type of cutter(A),and the three factors all have a significant effect on it;the difference between cutter types A1 and A2 is not significant, the difference between A3 and A1, A2 is significant, and the cutter A3 cuts into the soil the carry-in amount is the least, and the cutter A1 has the most carry-in amount of soil. The inclination angle of the cutter head is significantly different. When the inclination of the cutter head is B1, the carry-in amount of soil is the largest. When the inclination of the cutter head is B3, the carry-in amount is minimal;there is no significant difference in walking speed between C2 and C3 levels, significant difference between C1 and C2, C3, and when the walking speed is C1, the soil carry-in is the least, and when the walking speed is C3, the soil carry-in is the most.The analysis of the cutting process of the cutter into the soil is obtained: after the soil particles are subjected to the action of the cutter, most of the soil particles are thrown backward and different particles are thrown at different speeds.This research provides a reference for the future sugarcane cutter struct

关 键 词：甘蔗收割机 离散元法 切割器 仿真试验 

分 类 号：S225.53[农业科学—农业机械化工程]