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针对排土机履带行走装置不易进行物理试验,按照传统理论计算时选择参数困难,需要依靠经验进行类比设计,而导致设计过于保守、设备成本增加的问题,以SP1400/50+50型排土机为研究对象,基于Recur Dyn软件的低速履带模块,建立排土机履带行走装置虚拟样机模型,分别对其在硬、软路面上直行、转弯、爬坡6种典型工况进行了仿真分析,得到了履带行走装置驱动力矩和张紧力的变化曲线,并与理论计算结果进行对比。结果表明,所建的动力学模型有很好的准确性,仿真结果与理论计算结果的误差在6%以内,可以作为传统理论计算的补充和对照,为排土机履带行走装置及类似的大型履带装置的设计优化提供依据。
It is not easy to carry out the physical test for the crawler walking device of the earthmoving machine. It is difficult to select the parameters according to the traditional theory. Therefore, the analogy design based on the experience needs to be made, resulting in the design being too conservative and the equipment cost being increased. Taking the SP1400 / 50 + As the research object, the virtual prototyping model of the earth moving track crawler was established based on Recur Dyn software’s low-speed crawler module. Six typical working conditions of straight, turning and climbing on hard and soft pavement were simulated respectively. The curve of driving torque and tension of crawler walking device was compared with the theoretical calculation results. The results show that the proposed dynamic model has good accuracy, and the error between the simulation results and theoretical calculation results is less than 6%, which can be used as a complement and contrast to the traditional theoretical calculation. For the excavator crawler walking devices and similar large Crawler design and optimization provide the basis.