引言近几年,瑞典现有铁路上使用改善走行性能的转向架,其中的一种带径向调整轴的转向架可大大减少对线路的影响,减少车轮和钢轨的磨损。这种转向架结构用于市郊列车和客车,可提高运行速度,减少运营支出。日本、法国和联邦德国铁路的发展道路是建设专用高速线路和制造新型机车车辆,而瑞典则是研制现有铁路网使用的新结构转向架。要求新的转向架在一般上部建筑线路上能提高运行速度和增加负载。英国和美国铁路就是这种发展趋势。机车车辆的最重要部件是走行部分,根 Introduction In recent years, existing bikes in Sweden have been used to improve bogie performance. One type of bogie with a radially adjustable axle can greatly reduce the impact on the line and reduce the wear of wheels and rails. This bogie structure for suburban trains and buses, can increase operating speed and reduce operating expenses. The road to development of Japan, France and the Federal Republic of Germany’s railways is the construction of dedicated high-speed lines and the manufacture of new types of rolling stock, while Sweden is the development of a new structural bogie for the existing railway network. Requires new bogies to run faster and increase loads on generally upper building lines. This is the trend in Britain and the United States. The most important part of rolling stock is the running part, the root