Driving Stability Analysis of Wheel Loader under Multi-Road Conditions
-
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。Abstract: 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.
-
Keywords:
- mechanical engineering /
- wheel loader /
- driving stability /
- dynamic model /
- real-time status
-
-
[1] 徐向阳,艾 星,宋朝省,等.基于动态横向转移载荷的轮式装载机侧倾稳定性研究[J].振动与冲击,2020,39(10):163-169+214. [2] 贾 拓,赵丁选,崔玉鑫.铰接式装载机倾翻预警方法[J].吉林大学学报(工学版),2018,48(6):1762-1769. [3] 姚宗伟.铰接转向工程车辆侧倾稳定性研究[D].长春:吉林大学,2013. [4] Konopka S, Krogul P, Lopatka M J, et al. Articulated engineering equipment stability simulations based on Ł34 wheel loader[J].Journal of KONES,2011(18):273-280.
[5] 窦 博,冯辉荣,张凌滢,等.山区道路车辆转弯行驶稳定性分析与控制[J].海峡科学,2020(2):43-46. [6] 罗庆玉.轮式装载机总体设计-倾翻预计算设计[J].科学技术创新,2019(2):153-154. [7] 郝文琦,何 剑,梅萌萌.履带式工程车辆复杂路况下行驶稳定性研究[J].建设机械技术与管理,2017,30(8):58-62. [8] 陈 羽,初长祥,向上升.轮式装载机车架铰接结构浅析[J].工程机械与维修,2020(3):57-59.
计量
- 文章访问数: 20
- HTML全文浏览量: 2
- PDF下载量: 9
下载:
