多桥驱动车辆越障时轴荷动态分配研究

多桥驱动车辆越障时轴荷动态分配研究

魏道高;区颖刚;杨丹彤;刘庆庭

【期刊名称】《农业机械学报》 【年(卷),期】2011(042)002

【摘要】轴荷动态分配规律是影响多桥驱动非路面车辆可靠性的主要因素,为了获得越障时的轴荷,建立了四桥驱动越障时轴荷动态分配动力学模型.对某型四桥驱动山地车辆进行了计算与分析,获得附着系数φ为0.1-1.0越障时各桥轴荷分配量,结果表明,该车辆越障时轴荷动态分配值差异较大,第4桥轴荷总是呈现较大值,导致各桥的疲劳寿命不一致.%A 4-axle driven hill-terrain vehicle was made in China. To improve the vehicle fatigue strength and reliability, the dynamics models of 4 axle-load were founded when it crossing obstacle. According to the dynamics models, the axle-load distributions of the vehicle crossing obstacle were calculated when off-road adhesion coefficient (ρ) is 0. 1 ~ 1. 0. The results showed its axle-load distributions had more different among 4-axle when the vehicle crossing obstacle, the distribution law was analyzed. The design of 4-axle different strength and improving the 4-axle strength was put forward. The paper provided a mathematic model for reliability design and optimizing distribution of torque when the hill-ground crossing obstacle.

【总页数】5页(39-42,53)

【关键词】非路面车辆;越障;轴荷;可靠性