Torsion limiting and automatic returning structure of sled frame with rudder, sled frame and sled vehicle

The invention relates to the technical field of sled vehicles, in particular to a torsion limiting and automatic returning structure of a sled frame with a rudder, the sled frame and a sled vehicle. A torsion limiting and automatic returning structure of a sled frame with a rudder comprises a front frame, and the front frame is provided with a mounting hole and a mounting base. The limiting plate is arranged on the front frame, a rotating structure is arranged on the limiting plate, and the rotating structure is located below the mounting base; the rear frame is provided with a middle shaft and limiting pins located on the two sides of the middle shaft, the middle shaft penetrates through the mounting hole, and the limiting pins are inserted into the rotating structure; the elastic part is arranged in the mounting base, the bottom of the elastic part corresponds to the limiting pin, and after the rear frame is stressed to rotate, the limiting pin automatically returns to the initial state under the action of