V-L型秸秆粉碎还田刀片设计与试验

针对秸秆粉碎还田刀片工作过程中存在的刀片易磨损、粉碎效果不理想和稳定性差等问题，通过分析现有刀片的优缺点，设计了一种V-L型秸秆粉碎还田刀片，具有延长刀片的使用寿命、提高秸秆粉碎效果和作业效率等优点。通过分析拖拉机前进速度、刀辊转速以及二者相互作用对秸秆粉碎率的影响，确定了刀片工作参数的最佳组合：拖拉机进速度为1 m/s，刀辊转速为1400 r/min。通过2因素3水平正交试验，确定了刀片结构参数的最佳组合：刀片前倾角为10°，刃线与地面夹角为14°。对安装V-L型刀片的秸秆粉碎还田机整机作业效果进行了田间试验，结果表明各项指标均达到了国家相关标准的技术要求。该研究可为秸秆粉碎还田刀片设计提供...

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Bibliographic Details
Published in农业工程学报 Vol. 31; no. 1; pp. 28 - 33
Main Author 贾洪雷 姜鑫铭 郭明卓 刘晓亮 王立春
Format Journal Article
LanguageChinese
Published 吉林大学生物与农业工程学院，长春 130022 2015
吉林大学工程仿生教育部重点实验室，长春 130022%吉林大学生物与农业工程学院，长春 130022
吉林省农业科学院，长春 130124
Subjects
农业机械
刀片
秸秆
秸秆粉碎还田机
耕作
设计
试验
agricultural machinery
秸秆
试验
耕作
smashed straw machine
straw
刀片
cultivation
blade
设计
experiment
design
秸秆粉碎还田机
农业机械
Online AccessGet full text
ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2015.01.004

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Summary:针对秸秆粉碎还田刀片工作过程中存在的刀片易磨损、粉碎效果不理想和稳定性差等问题，通过分析现有刀片的优缺点，设计了一种V-L型秸秆粉碎还田刀片，具有延长刀片的使用寿命、提高秸秆粉碎效果和作业效率等优点。通过分析拖拉机前进速度、刀辊转速以及二者相互作用对秸秆粉碎率的影响，确定了刀片工作参数的最佳组合：拖拉机进速度为1 m/s，刀辊转速为1400 r/min。通过2因素3水平正交试验，确定了刀片结构参数的最佳组合：刀片前倾角为10°，刃线与地面夹角为14°。对安装V-L型刀片的秸秆粉碎还田机整机作业效果进行了田间试验，结果表明各项指标均达到了国家相关标准的技术要求。该研究可为秸秆粉碎还田刀片设计提供参考。
Bibliography:11-2047/S
A smashed straw blade with V-L shaped for smashed straw machine was designed based on analyzing the advantages and disadvantages of existing blades, such as straight-knife shaped, Y or L shaped and hammer shaped. It can solve the problems in practical operation, such as obvious abrasion, fierce machine vibration, unsatisfied smash effect and poor stability. We improved L shaped blade by adding a V-bending to form V-L structure. The V-L structure can decrease the included angle between edge line and ground to avoid wear too fast, extend the length of edge line to reduce blade density, move the barycenter outward to increase rotational inertia and ensure the barycenter located in the same plane with blade handle to improve rotation stability. The barycenter position was not affected by blade thickness, the blade mass increased and the deformation decreased with increase of blade thickness based on finite element analysis by Inventor software. To increase rotational inertia and prevent the deformation o
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2015.01.004