多因素影响下拖拉机侧向稳定性模型实验  

Scale Model Experiment on Lateral Stability of Tractor Affected by Multi-factors

作　　者：张硕[1] 李臻 朱忠祥[1] 毛恩荣[1] 光岡宗司 井上英二 ZHANG Shuo LI Zhen ZHU Zhongxiang MAO Enrong MITSUOKA Muneshi INOUE Eiji(Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, China Agricultural University, Beijing 100083, China Faculty of Agriculture, Kyushu University, Fukuoka 8120025, Japan)

机构地区：[1]中国农业大学现代农业装备优化设计北京市重点实验室,北京100083 [2]日本九州大学农学部,福岡8120025

出　　处：《农业机械学报》2017年第10期358-363,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：中央高校基本科研业务费专项资金项目(2017QC191);国家重点研发计划项目(2016YFD0700504)

摘　　要：针对拖拉机斜坡直线行驶工况,基于拖拉机比例模型和3D打印技术,建立了模型拖拉机轮胎-地面载荷实验测试系统。以斜坡上侧车轮-地面载荷为主要参考量,提出了针对拖拉机前、后轮的侧向稳定评价指标(拖拉机前、后轮的斜坡上侧车轮载荷分配系数)。采用田口实验设计方法,选择前后轮轮胎类型、前配重质量、前后轮距和机具位置6个影响因素作为控制因子,以E级和F级随机路面作为噪声因子,设计了6因子混合水平的田口实验方案,并对实验结果进行信噪比和均值的方差分析。实验结果表明,对拖拉机斜坡上侧前、后轮侧向稳定性影响最大的控制因子分别是前配重质量和后轮距;得出基于前、后轮侧向稳定性评价指标的拖拉机最优配置,为拖拉机的稳定性优化设计提供了一定参考,也为拖拉机防侧翻预警控制提供了理论基础。Along with the dramatically growing use of agricultural tractors, the associated vehicle lateral stability has been found to greatly affect operation efficiency and human safety. According to characteristics of the low speed driving condition of tractor on slope ground, a scaled experimental system for measuring the tire-ground reaction force was built. By applying the 3D printing technology, a scale- model-tractor attached with implement and the random terrain surfaces for the tractor to pass over was developed. Taking the uphill wheel load of the tractor as the main reference parameter, the lateral stability evaluation indexes for tractor＇ s front and rear Wheels were proposed. The choice of tire type, ballast weight, front and rear track widths, and implement height were selected as the control factors, while introducing the terrain roughness in classes E and F as the noise factors. Employing the Taguchi design of experiment, factorial significances were investigated by the corresponding ANOVA analysis. The experimental results showed that tractor frontal ballast had the greatest impact on the front-wheel- based tractor lateral stability, while the rear track width predominantly determined the rear-wheel-based one. Furthermore, an optimal tractor configuration was given by taking into account the stability indexes for both front and rear wheels. The approach provided a reference for tractor stability optimization design and a theoretical basis for further tractor anti-rollover control.

关 键 词：拖拉机比例模型 田口实验设计 随机路面 侧向稳定性 最优配置 

分 类 号：S219.1[农业科学—农业机械化工程]