As with the locomotive bogie, the coach bogie is a four - wheel or six-wheel truck supporting the coach-end thorough the medium of a pivot.
同机车转向架一样，客车转向架也是四轮或六轮的转向架，利用枢轴支撑车箱的顶部，使之可以自由转动。
2
The calculation method of CG of locomotive is depicted. Then it is introduced how to determine and obtain secondary sprung CG, bogie mass CG and actual locomotive CG by four pivot point method.