近几年来铁路运输补充了许多新型客货车辆,提高了列车载重量,增大了列车长度,同时运行速度也有很大的提高。轮对是簧下部分(死重),它承受车辆作用于钢轨以及轨道作用于车辆的所有载荷。降低轮对的重量,对减轻轮对对车辆各构件及轨道的有害影响起 In recent years, railway transportation has been supplemented by many new types of passenger and cargo vehicles, which have increased the carrying capacity of trains and increased the train length. At the same time, the running speed has also been greatly improved. The wheelset is the unsprung part (deadweight), which accepts all the loads that the vehicle acts on the rail and the rail acts on the vehicle. Reduce the weight of the wheelset, to reduce the wheel on the vehicle components and tracks from the harmful effects