美国SAB公司正在为铁道车辆的弹性车轮,即装有橡胶件、为降低噪声与振动而设计的钢车轮开发新的用途。目前开发的重点主要是在市郊铁道车辆上的应用。由于原弹性车轮装有轮箍,并且它的支撑腹板是由多个橡胶块固定在轮心上的,所以这种车轮可减少轨道力,降低车辆振动以及路基产生的振动。可是对于城市运输系统来说,减少空气中的噪声也是重要的,因此该公司又推出了第二种设计,即V形断面车 SAB USA is developing new applications for flexible wheels on railway vehicles, rubber wheels equipped with rubber parts designed to reduce noise and vibration. At present, the development of the main focus is on the suburban railway vehicles. Since the original elastic wheel is equipped with a wheel rim, and its supporting web is fixed on the wheel center by a plurality of rubber blocks, the wheel can reduce the track force and reduce the vibration of the vehicle and the vibration of the roadbed. But for urban transport systems, reducing noise in the air is also important, so the company introduced the second design, the V-section car