铰接工程车辆抗侧滚扭杆可靠性研究

Research on Reliability of Anti-Roll Torsion Bar for Articulated Construction Vehicle

为了提高铰接工程车辆的稳定性,分析了国产某型前摆动桥铰接工程车辆的抗侧滚扭杆的各项性能,并开展了铰接工程车辆侧倾稳定性分析与防翻机构技术研究.通过Adams建立了的安装前桥抗侧滚扭杆的铰接工程车辆模型,分析了扭转刚度在1.00~2.50 MN·m/rad之间,在不同的行驶状况下的整车侧倾稳定性.同时,通过有限元分析方法,改变扭杆弹簧的结构对扭杆弹簧的进行了静载分析、冲击载荷分析和疲劳分析.结果表明,随着扭杆弹簧有效长度的增加,可以更多的将倾翻的动能转换为扭杆弹簧扭转的弹性势能.扭杆所承受的最大Von Mises应力为878.7MPa,当预装角度在10°~25°之间变化时,扭杆弹簧受力变化影响不大,疲劳分析表明该结构均属于高周疲劳或永久疲劳,在现有的铰接工程车空间布局条件下均可满足使用.

In order to improve the stability of articulated engineering vehicles,this paper studies the performance of the anti-roll torsion bar of a certain type of front swing bridge articulated engineering vehicle made in China,and conducts the roll stability analysis and the study on the anti-roll mechanism technology of articulated engineering vehicles.A model of an articulated construction vehicle with front axle anti-roll torsion bar is installed by Adams.Then the paper analyzes the roll stability of the vehicle under different driving situations when the torsional rigidity is between 1.00~2.50 MN·m/rad.At the same time, by using the finite element method, the paper analyzes the static load, the impact load and fatigue of the torsion bar spring by changing the structure of the torsion bar spring. The results show that the increase in the effective length of the torsion bar spring can further convert the kinetic energy of tilting into the elastic potential energy of the torsion bar spring. The maximum Von Mises stress on the torsion bar is 878.7MPa. When the pre-installation angle is changed between 10°~25°, the torsion bar spring is not affected by the force change. Fatigue analysis shows that the structure belongs to high cycle fatigue or permanent fatigue. It can be used in the existing space of the articulated construction vehicle.