本文介绍了日本铁道综合技术研究所开发的21世纪RT-X1型高性能转向架的结构、参数。该转向架的重量约为现有转向架的1/2,采用短轴距和独立车轮。通过台架和装车试验证明,具有独立车轮的轻量化转向架作为从动转向架不仅能在曲线区间高速运行,而且能抑制在直线上的蛇形运动,还能减小车轮和钢轨的磨损。今后该转向架还将作为动力转向架进行试验。 This article introduces the structure and parameters of the 21st century RT-X1 high performance bogie developed by Japan Railway Comprehensive Technology Research Institute. The bogie weighs about 1/2 of the existing bogies with short wheelbase and independent wheels. Bench and loading tests have shown that lightweight bogies with independent wheels act as driven bogies not only to run at high speeds over curved sections but also to suppress serpentine movements in straight lines and to reduce wear on wheels and rails . The bogie will also be tested as a power bogie in the future.