Composite air suspension protection structure integrated with limiting function

The invention discloses a composite air suspension protection structure integrated with a limiting function, which comprises a frame, a drive axle, a guide arm and an air spring, the middle part of the guide arm is connected with the drive axle through a U-shaped bolt connecting assembly, one end of the guide arm is hinged with a guide arm fixing bracket through a pin shaft, the guide arm fixing bracket is fixedly connected with the frame, and the air spring is arranged on the guide arm fixing bracket. The other end of the guide arm is connected with the air spring, the air spring is fixedly connected with the frame, the U-shaped bolt connecting assembly comprises a cover plate located above the guide arm, the frame is provided with a guide rod, the cover plate is provided with a boss feature, the boss feature comprises an arc-shaped hole, and the arc-shaped hole is connected with the guide rod in a sliding fit mode. And the rotating central axis of the arc-shaped hole is collinear with the central axis of th