为了通过提高弯道运行速度来缩短列车旅行时间，机车的走行部有必要采用径向可调轮对。本文介绍了几种可供选择的具有径向可调轮对的转向架方案及其设计结构，并给出了各方案转向架的滚动试验台试验、线路牵引和弯道高速运行试验结果，提出结构进一步优化的要求和今后的发展方向。 In order to shorten the train travel time by increasing the curve speed, it is necessary to adopt the radial adjustable wheelset. In this paper, several kinds of alternative bogies with radial adjustable wheelsets and their design structures are introduced. The rolling test bench test, the test results of line traction and curve high speed operation are given, The structure further optimization requirements and the future direction of development.