基于骨架模型的重卡转向轮运动学特性研究

Research onkinematic characteristics of heavy truck steering wheels based on skeleton model

为解决传统转向轮运动学分析方法复杂及更改周期长的问题,提出了基于骨架模型的分析方法。以某重卡为研究对象,通过CATIA软件以参数化的方式创建系统骨架、零件骨架,并保持系统骨架与零件骨架之间的映射关系。在零件骨架模型之间添加相关运动副,建立DMU模型;对转向轮进行运动学分析,得到相关参数随车轮跳动的变化关系、左右转向轮转角的对应关系。该方法无需建立三维零件模型,通过调整参数的方式即可修改骨架模型和运动学特性。

To solve the problems of complex and long modification cycles in traditional kinematic analysis methods for steering wheels,a skeleton model-based analysis method was proposed.Taking a certain heavy-duty truck as the research object,the system skeleton and part skeleton are created in a parameterized manner through CATIA software,and the mapping relationship between the system skeleton and the part skeleton was maintained.Add relevant motion pairs between the skeleton models of the parts and establish a DMU model.Perform kinematic analysis on the steering wheel to obtain the relationship between relevant parameters and tire runout,as well as the corresponding relationship between left and right steering wheel angles.This method does not require the establishment 3D part model,and the skeleton model and kinematic characteristics could be modify by adjusting parameters.