Single-wheelset trailer bogie frame

The embodiment of the invention provides a single-wheelset trailer bogie frame. Side beams of the single-wheelset trailer bogie frame are arranged in parallel in the running direction of a trailer. The end beams are of a U-shaped structure, the two ends of each end beam are connected with the two ends of the side beams respectively, the side beams and the end beams define a square-shaped structure, according to the single-wheelset trailer bogie frame, the square-shaped structure is formed by the side beams and the end beams, middle beams in the prior art are reduced, and the dead weight of the bogie frame is effectively reduced; when the frame bears a vertical load, the large U-shaped structure end beams can be bent and deformed to a certain degree, impact is relieved, a flexible frame structure is achieved, damage to the bogie frame running under complex road conditions for a long time is reduced, and the service life of the bogie frame is prolonged. 本申请实施例提供了一种单轮对拖车转向架构架，其侧梁沿拖车运行的方向平行设置；端梁为"U"形结构且每根端梁的两端分别与