Fecha de publicación: 04/01/2022 Fuente: Wipo Tobacco Agriculture The utility model relates to a small radius turning device of a tobacco seedling transplanting vehicle, which is characterized in that the small radius turning device comprises a bottom plate and wheels arranged below and above the bottom plate, the wheels comprise two front wheels and two rear wheels, the two front wheels are respectively and rotatably hinged on a support seat of the bottom plate, the two front wheels are respectively driven to rotate by a chain mechanism driven by a motor, and the two rear wheels are respectively hinged on the support seat of the bottom plate. The two rear wheels are fixedly connected with the two ends of a rear shaft, the two ends of the rear shaft are rotationally hinged to two sliding seats, the two sliding seats are slidably connected to sliding rails of the bottom plate respectively, and a telescopic mechanism used for driving the rear shaft to be close to or away from the front wheels is arranged on the bottom face of the bottom plate. The small-radius turning device of the tobacco seedling transplanting vehicle is reasonable in design, the turning radius of the tobacco seedling transplanting vehicle can be reduced, and damage to tobacco seedlings is reduced.