铰接式防爆胶轮车铰接机构改进

Improvement of Hinge Mechanism of Articulated Explosion-proof Rubber Tire Truck

针对某型号防爆胶轮车铰接机构处容易损坏、断裂的现象,建立其满载时的多刚体转向虚拟样机模型并进行仿真分析,发现该车的单自由度铰接机构在车辆通过矩形坑路面时,前机架与铰接机构销轴接触处存在应力过度集中现象,是铰接机构损坏的主要原因。将该车单自由度铰接机构设计改进为双自由度铰接机构,并建模进行仿真分析,验证了改进后车辆在通过障碍路面时,前后铰接机构及车体力学性能明显优于单自由度情况,材料安全系数及可靠性大大增强,可以避免铰接机构及车体的损坏现象。

Aiming at the phenomenon that the hinge mechanism of a certain type of explosion - proof rubber tire is easy to be damaged and broken, the multi - rigid - body to virtual model is designed and simulated. It is found that the single degree of freedom articulation mechanism of the vehicle, when passing through the rectangular pavement, there is excessive stress concentration in the contact between the front frame and the hinge plate pin, which is the main reason for the damage of the hinge mechanism. The double degree of freedom hinge mechanism is designed for the vehicle. The simulation results show that the mechanical properties of the hinged device and the vehicle body are better than those of the single degree of freedom. The safety factor and reliability of the vehicle are greatly enhanced to avoid the hinge device and the body of the damage.