Accessory adhesion device for cover plate of spare tire of automobile

The invention provides an accessory adhesion device for a cover plate of a spare tire of an automobile. The device comprises a cover plate clamping mechanism and an accessory preassembling mechanism, wherein the cover plate clamping mechanism comprises two opposite cover plate clamping units and a movable cylinder; each cover plate clamping unit comprises clamping plates, a clamping cylinder and a rotating cylinder; the clamping plates comprise upper clamping plates and lower clamping plates; the upper and lower clamping plates of each cover plate clamping unit can be driven by the corresponding clamping cylinder to vertically move close to or far away from each other; the clamping cylinders and the clamping plates can be driven by the rotating cylinders to be overturned by 180 degrees in the vertical plane; the two cover plate clamping units can be driven by the movable cylinder to move close to or far away from each other; the accessory preassembling mechanism comprises an accessory preassembling ...