Part-missing-preventing bedplate and plate conveyor

The embodiment of the utility model provides a piece-missing-preventing bedplate and a plate conveyor. The piece-missing-preventing bedplate comprises a bedplate body and a supporting plate. The platen body comprises a horizontally-arranged flat plate, a small arc plate connected to the rear end of the flat plate and a large arc plate connected to the front end of the flat plate. The tops of the small arc plate and the large arc plate protrude out of the top face of the flat plate, and the circle centers of the small arc plate and the large arc plate are located below the flat plate. The bottom radius of the large arc plate is greater than the top radius of the small arc plate; the supporting plate is of a U-shaped structure with an upper opening, and the two side edges of the supporting plate are fixedly connected to the bottom face of the flat plate. A plurality of mounting holes are further formed in the flat plate; the mounting holes are formed in the two sides of the supporting plate respectively. Accord