列车运行通过曲线时要限制其运行速度,其中限制列车速度的关键问题是防止颠覆。列车在通过曲线时产生离心力,离心力作用于机车车辆的重心位置,离心力的大小与速度的平方成正比,与曲线半径成反比,此离心力与作用在重心上的重力的合力的作用位置如果超过轨距的一半,即超过车轮位置时,相反一侧的轮重就变为零,列车就发生颠覆。 The train running through the curve to limit its speed, which limits the train speed the key issue is to prevent subversion. The train generates centrifugal force when passing through the curve. The centrifugal force acts on the center of gravity of the rolling stock. The magnitude of the centrifugal force is proportional to the square of the velocity and inversely proportional to the radius of the curve. If the position of the combined force of this centrifugal force and the gravity acting on the center of gravity exceeds the rail Half the distance, that is, beyond the wheel position, the opposite side of the wheel weight becomes zero, the train subversion occurred.