圆盘和数根牵引钢绳构成绳轮副，伺服电机的输出轴与圆盘固定。
The cord-pulley pair consists of a disc and several pieces of traction steel cord, and the disc is fixed onto the output shaft of the servo motor.
该装置可以在火车原处检测轮副——通常只需要移动轴上的弹簧盒盖。
These systems are used with the wheelsets in-situ on the train -normally only the axle end caps have to be removed.
该方案采用了行星轮系和4组齿轮副的传动机构，实现了驱动机构在7种工作模式下的连续传动。
In the solution, the drive train consisting of the planetary gear train and 4 gear pairs is applied to realize continuous transmission under 7 working modes.
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