Gooseneck frame sub-assembly with hidden longitudinal beam

The invention relates to the technical field of vehicle frames, in particular to a gooseneck vehicle frame sub-assembly with a hidden longitudinal beam, which comprises a front end beam, a traction plate, a gooseneck beam and a gooseneck cross beam, the traction plate is square, and inverted-L-shaped bent parts are arranged on the two sides of the traction plate. The front end beam is fixedly connected to one end of the traction plate; the two gooseneck beams are located on the two sides of the end, away from the front end beam, of the traction plate respectively. The gooseneck vehicle frame sub-assembly has the beneficial effects that the bent part of the traction plate replaces an original gooseneck longitudinal beam, the structure of the gooseneck vehicle frame sub-assembly is simplified, the assembly efficiency is improved, the overall strength of the gooseneck vehicle frame sub-assembly is improved, and the weight of the gooseneck vehicle frame sub-assembly is reduced; the bendingpart and the towing plat