SP1400/50+50型排土机履带行走装置动力学仿真

Dynamic simulation on crawler travelling unit of SP1400/50+50 spreader

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。

Since physical test for the crawler travelling unit of the spreader was not easy to conduct, and it was difficult to select parameters according to theoretical calculation, ~thus analogical design relying on experience was needed, which led to over conservative design and increase in equipment cost. In the paper, SP1400/50＋50 spreader was taken as the research object, and the virtual prototype model of the crawler travelling unit of the spreader was established based on the low-speed crawler module of RecurDyn. And then, six kinds of simulation of the spreader on hard and soft road surface in straight driving, turning and climbing mode were separately conducted, the variation curve of the driving torque and the tension was obtained, and which was contrasted with theoretical calculation results. The results showed： the established dynamic model presented a great accuracy, and the error between the simulation results and the theoretical ones was within 6%. It could serve as the supplement and contrast of traditional theoretical calculation, and offer reference for the design optimization of the crawler travelling unit of the spreader and similar crawler units.