基于稳定性分析的伸缩臂叉装车重心位置研究

Research on the position of gravity center of telescopic boom forklift based on stability analysis

伸缩臂叉装车重心位置直接决定了其稳定性能。文中将叉装车分为上装总成(包括基本臂、次级臂及货叉)和底盘两大部分。在上装总成已设计好的基础上,基于典型工况的稳定性分析得出整车重心位置,再根据整车与上装总成和底盘的重心关系得出合理的底盘重心应满足的条件。同时,通过在实际研发中应用该方法和关系式,得出底盘重心坐标的可行域。对临界状态进行仿真验证,两者的误差在5%以内,表明计算方法和表达式有效。

Stability of the telescopic boom forklift directly depends on position of its gravity center. In the paper, the forklift is divided into the two parts of upper assembly （including basic boom, secondary boom and fork） and chassis. With the designed upper assembly, the paper gets the position of the gravity center of the entire forklift based on the stability analysis of typical working conditions and conditions necessary for reasonable gravity center of the chassis based on the entire forklift＇ s relation with the upper assembly and chassis in gravity center. In addition, the application of the method and relational expression in actual research and development leads to the feasible region of the coordinates of gravity center of the chassis. The simulation results of critical state show that the error of the two is within 5%, indicating that the calculation method and expression are effective.