摘要
为研究轮式装载机行驶稳定性,该文基于动力学模型及对系统自由度的解析,建立了反映前后铰接轮组实时运动状态的轮式装载机行驶动力学模型和轮胎模型,并进行了微分求解,分析了装载机在多种复杂路况下的运动状态、轮胎实时受力情况以及横向载荷转移率LTR。结果表明:轮式装载机在任何路况行驶时,影响行驶稳定性的主要因素为速度,LTR与速度正相关;路况越恶劣,LTR越大,斜坡弯道行驶时LTR超出安全阈值的风险越大,因此应控制行驶速度以避免发生倾翻。
In order to study the driving stability law of wheel loader under different road conditions,a driving dynamics model of wheel loader which can reflect the real-time motion trajectory of front and rear articulated wheel groups is established,and its differential equation is solved accurately.According to this model,the driving trajectory and transverse load transfer rate(LTR)of wheel loader under various complex road conditions are analyzed.The results show that driving speed is the main factor that affects the stability of wheel loader in any road condition,and LTR is positively correlated with speed;the worse the road condition,the greater the LTR,the LTR has exceeded the safety threshold when driving on a slope curve,thus the driving speed should be controlled to avoid tipping.
作者
张璞
ZHANG Pu(School of Mechanical and Electrical Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《机械研究与应用》
2024年第2期111-115,共5页
Mechanical Research & Application
关键词
机械工程
轮式装载机
行驶稳定性
动力学模型
实时状态
mechanical engineering
wheel loader
driving stability
dynamic model
real-time status
