Plate quality detection device

The utility model discloses a quality detection device for a plate. Including a base, the two inclined supporting blocks are arranged on the side faces of the two fixing blocks correspondingly. A rotating shaft is movably arranged between the two inclined supporting blocks; the pull rope is arranged on the rotating shaft; the detection block is arranged on the pull rope; one end of the rotating shaft penetrates through the inclined strut block and is fixedly connected with the first roller; a second roller is arranged at the bottom of the outer side of the inclined strut block; the belt is arranged between the first roller and the second roller; a crank is arranged at the rotating center of the outer side of the second roller; according to the utility model, the rotating shaft can be supported through the two inclined supporting blocks; the two inclined supporting blocks can prevent a worker from being hindered from placing a to-be-detected plate; the belt can drive the first roller torotate, the first roller