拖拉机前桥悬架参数匹配及其对振动特性的影响

拖拉机长年行驶在田间和路况较差的农村土路上,且减振装置简陋,其振动尤为剧烈。为降低拖拉机的振动,以江苏常发集团CF700型拖拉机为研究对象,建立了前桥悬架拖拉机三自由度振动模型,以机身垂向振动加速度、机身俯仰振动角加速度、座椅安装处垂向振动加速度、前后轮动载荷以及前桥悬架动挠度作为评价指标,对前桥悬架刚度和阻尼系数进行了优化匹配,得到了前桥悬架刚度和阻尼系数的最佳匹配值（120 000 N/m、8 000 N·s/m）。计算并比较了安装前桥悬架拖拉机和无悬架拖拉机的振动特性。当拖拉机以3-18 km/h行驶速度在国标D级路面上行驶时,安装前桥悬架拖拉机的机身垂向振动加速度均方根值和俯仰振动角加...

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Bibliographic Details
Published in农业工程学报 Vol. 31; no. 10; pp. 29 - 36
Main Author 伊力达尔·伊力亚斯 朱思洪 徐刚 袁加奇
Format Journal Article
LanguageChinese
Published 新疆农业大学机械交通学院，乌鲁木齐 830052%南京农业大学工学院，南京 210031 2015
南京农业大学工学院，南京 210031
江苏省智能化农业装备重点实验室，南京 210031%南京农业大学工学院,南京,210031
Subjects
前桥悬架
参数匹配
拖拉机
振动
模型
front axle suspension
parameter matching
振动
模型
tractor
拖拉机
参数匹配
vibration characteristics
前桥悬架
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2015.10.004

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Summary:拖拉机长年行驶在田间和路况较差的农村土路上,且减振装置简陋,其振动尤为剧烈。为降低拖拉机的振动,以江苏常发集团CF700型拖拉机为研究对象,建立了前桥悬架拖拉机三自由度振动模型,以机身垂向振动加速度、机身俯仰振动角加速度、座椅安装处垂向振动加速度、前后轮动载荷以及前桥悬架动挠度作为评价指标,对前桥悬架刚度和阻尼系数进行了优化匹配,得到了前桥悬架刚度和阻尼系数的最佳匹配值（120 000 N/m、8 000 N·s/m）。计算并比较了安装前桥悬架拖拉机和无悬架拖拉机的振动特性。当拖拉机以3-18 km/h行驶速度在国标D级路面上行驶时,安装前桥悬架拖拉机的机身垂向振动加速度均方根值和俯仰振动角加速度均方根值平均下降24.03%和42.46%;座椅安装处垂向振动加速度均方根值平均下降29.77%;前轮动载荷平均下降21.72%。研究结果表明,拖拉机前桥悬架对提高拖拉机的乘坐舒适性和行驶安全性具有显著作用。该研究结果为拖拉机前桥悬架的设计及优化提供了参考。
Bibliography:YilidaerYiliyasi, Zhu Sihong, Xu Gang, Yuan Jiaqi （1. College of Engineering, Nanjing Agricultural University, Nanjing, 210031 China; 2. College of Mechanical and Transportation, Xinjiang Agricultural University, Wulumuqi, 830052 China; 3. Jiangsu Key Laboratory for Intelligent Agricultural Equipment, Nanjing 210031, China）
11-2047/S
tractor;front axle suspension;parameter matching;vibration characteristics
Compared with cars, buses and trucks, tractor often drives on the dirt road in the field of rural areas, together with the simple vibration damping device, so the vibration of tractor is particularly intense. Severe vibration of tractor would cause serious harm to driver’s health, and cause fatigue and failure of tractor parts and hence seriously affect the life of the tractor. In addition, excessive vibration of the tractor will exacerbate farmland soil compaction and reduce crop yields. How to effectively reduce the vibration of tractors to improve ride comfort and driving safety and reduce farmland damage
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2015.10.004