轴箱是铁路车辆转向架的一个重要组件,它的加工质量好坏,关系到整个列车的运行安全。由于铁道车辆技术的飞跃发展,新型转向架的出现,使得构成转向架走行系统的重要元件轴箱也在进行更新换代,过去采用的导框式和方体式轴箱都在逐渐淘汰,新型的转向架已广泛地采用无导框式轴箱。 Axle box is an important component of railway vehicle bogie, its processing quality is good or bad, related to the entire train operation safety. Due to the rapid development of railway vehicle technology, the emergence of new bogies makes the replacement of the axle boxes, which are the important components of the bogie walking system. The guide frame and the square axle box used in the past are gradually phased out. The new type of steering Frame has been widely used non-guided frame box.