Air flow guide mechanical structure of middle fuselage of aircraft

The invention relates to an air flow guide mechanical structure of a middle fuselage of an aircraft. The air flow guide mechanical structure comprises a front flow guide device and a middle flow guide device, wherein the front flow guide device is arranged on a gooseneck, the middle flow guide device is arranged on a middle vehicle frame, the front flow guide device comprises a flow guide cover, a pin shaft and a telescopic connecting rod, and the middle flow guide device comprises a turnover square wheel, a turnover hydraulic cylinder, an extensible hydraulic cylinder and an extensible protecting plate. The air flow guide mechanical structure has the advantages that the air dynamics characteristic of surrounding air fields in the long-distance high speed transportation process of the transportation vehicle body is changed, the action force of the air drag on the middle fuselage is effectively reduced, the function of air drag on the middle fuselage is reduced, the stress deformation of the middle fuselage is prevented, the drag of the transport vehicle in the driving process is reduced, and the tilting of the transport vehicle caused by overlarge air drag is prevented.