Carrying frame rail combining device

The embodiment of the utility model provides a carrying frame rail combining device. The carrying frame rail combining device comprises a drive plate. The drive plate is axially and rotatably installed between a first guide rail, close to the test rail, of the conveying rail and a second guide rail, close to the conveying rail, of the test rail. The diameter of the drive plate is larger than the first distance and smaller than the second distance, the first distance is the distance between the first guide rail and the second guide rail, and the second distance is the distance between the thirdguide rail, away from the test rail, of the conveying rail and the fourth guide rail, away from the conveying rail, of the test rail. And a groove matched with the carrying frame is formed in the driving plate. By adopting the carrying frame rail combining device provided by the embodiment of the utility model, when the carrying frame on the test rail is transported to the conveying rail throughthe driving plate, the car