Automatic turning mechanism for bogie frame

The invention provides an automatic turning mechanism for a bogie frame. The automatic turning mechanism comprises two opposite stand column supports, an outer frame and an inner frame, wherein the stand column supports are sleeved with the outer frame, and the outer frame is vertically installed on a stand rail in a sliding mode; the inner frame is transversely installed on the outer frame in a sliding mode; the two lifting transmission devices are used for driving the outer frame to drive the inner frame to ascend and descend along the vertical rails; the two front-back driving devices are used for driving the inner frame to drive the turnover device and the clamp device to move front and back; the two turnover devices turn over in a vertical plane around a turnover center; and each clamp device comprises a lifting part, a driving part, a protective clamping plate and a bearing framework for bearing the framework, and the lifting parts are matched with the protective clamping plates under the power of the d