Backrest framework supporting structure based on commercial vehicle seat

The utility model discloses a commercial vehicle seat-based backrest skeleton supporting structure, which comprises a connecting seat, the top of the connecting seat is fixedly connected with a supporting frame, the two sides of the interior of the supporting frame are connected with mounting rods through guide assemblies, a supporting plate is fixedly connected between the two mounting rods, and the supporting plate is fixedly connected with a backrest. An adjusting mechanism used for adjusting the elastic force of the supporting plate is arranged between the mounting rod and the supporting frame, the adjusting mechanism comprises a mounting cylinder, one end of the mounting cylinder is fixedly connected with the supporting frame, and the inner wall of the mounting cylinder is connected with a movable ring in a sliding mode. According to the backrest framework supporting structure based on the commercial vehicle seat, through the arrangement of the adjusting assembly, a driving motor works to drive an adjust