1蛇行运动用车轴将左右车轮连成一体的铁道机车车辆，为了能平滑地通过曲线，其车轮踏面均带有锥度。因左右车轮的转速相同，运行时两车轮便会产生轮径差。当轮对在平直线路上运行时，由于左右两车轮的雄径差，轮对会出现一定波长的左右向正弦波形的蛇形运行，这种运行状态称之 1 Serpentine exercise Axle will be left and right wheels together into a railway locomotive vehicles, in order to smooth through the curve, the wheel tread with a taper. Due to the same speed of the left and right wheels, running wheels will produce two wheel diameter difference. When the wheel on the straight line running, due to the difference between the two wheels on the left and right, the wheel will appear a certain wavelength of about sinusoidal sinusoidal operation, this operation is called