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构架是内燃机车转向架的骨架,用以安装和连接各组成部分及传递各方向的力,同时用来使轮对保持在转向架内的正确位置上。为了降低轮缘磨耗,减轻机车横向摆动和对线路的冲击,必须使机车轮对安装垂直并对称于构架中心线,而这取决于构架各导框的尺寸和相互位置的正确性。因此,在修理构架时,必须首先进行准确的检测,据以修复构架各导框的正确尺寸和相互位置。由于构架几何尺寸较大,形状复杂,要进行准确测量是比较困难的。长期以来沿用平台测量法测
The frame is the frame of a diesel locomotive bogie that is used to mount and connect the various components and transmit forces in all directions while maintaining the wheel set in the correct position within the bogie. In order to reduce wheel rim wear, reduce locomotive lateral swing and impact on the line, it is necessary to make the wheel set vertical and symmetrical to the frame center line, which depends on the correctness of the frame size and mutual position. Therefore, in the repair of the frame, it must first be accurately detected, so as to repair the correct size and position of each frame of the frame. Due to the larger geometry and complex shape of the framework, it is more difficult to accurately measure. Long-term use of platform measurement method