Rotation articulation is the critical safe equipment of LRV. According to the principle, function and structure analysis, the proof and fatigue load of the rotation articulation was provided, and the detailed structure design of the rotating articulation was finished, which was validated by the calculation and finite element analysis, it was verified that the design of product met the requirements. 2 million cycles fatigue test showed that the design and process of the rotation articulation could meet the requirement of the LRV.