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基于车辆轮胎磨损理论,研究了走行轮侧偏角对走行轮摩擦功的影响规律。为了减小车辆运行时走行轮的摩擦功,设计了一种适用于双轴跨坐式单轨车辆的迫导向机构。利用SIMPACK仿真验证了迫导向机构的作用。结果表明:导向机构增益比的改变对整车走行轮总的横向摩擦功、整车导向轮总的摩擦功影响不大;增益比为0.16时,各走行轮呈现出均匀磨耗状态,这将减少更换走行轮胎的次数,此时前后转向架走行轮横向摩擦功降幅分别为30.9%、55.4%,并且导向轮的负担并没有增加,所以并不会增大导向轮的磨损。添加导向机构之后,无论是在车厂线还是正线,车辆通过曲线时安全辅助轮均不与轨道梁路面接触,这有利于导向轮寿命的提高。
Based on the vehicle tire wear theory, the influence of the slip angle of the running gear on the friction work of the running gear is studied. In order to reduce the friction work of running wheels during running, a forced steering mechanism suitable for biaxial straddle monorail was designed. SIMPACK simulation is used to verify the effect of forced guidance mechanism. The results show that the change of the gain ratio of the guide mechanism has little effect on the total lateral friction work of the running wheel of the vehicle and the total friction work of the steering wheel of the whole vehicle. When the gain ratio is 0.16, the running wheels show a uniform wear state, which will reduce Change the number of running tires, front and rear bogie running wheel lateral friction power decline of 30.9%, respectively, 55.4%, and the guide wheel does not increase the load, it will not increase the guide wheel wear. After the guide mechanism is added, neither the auxiliary safety wheel of the vehicle passes the curve of the track beam nor the track beam surface, which is beneficial to the improvement of the service life of the guide wheels.