Abstract: A cover plate device comprises a cover plate, a support plate and the damping assembly, wherein the cover plate is located at the upper part of the support plate, the damping assembly is provided on one side edge of the cover plate, and the assisting damper and a rotating damper are respectively connected with a support shaft on the support plate, so that the cover plate is rotatably connected with the support plate. The assisting damper comprises a shell I, a pin roll, a driving shaft, a driven shaft and a spring assembly, wherein a damper working chamber is arranged in the shell I; the driving shaft, the driven shaft and the spring assembly are all located in the damper working chamber; and when the driving shaft rotates, the driven shaft is driven to translate along the length direction of the damper working chamber.

Abstract: A cover plate device comprises a cover plate, a support plate and the damping assembly, wherein the cover plate is located at the upper part of the support plate, the damping assembly is provided on one side edge of the cover plate, and the assisting damper and a rotating damper are respectively connected with a support shaft on the support plate, so that the cover plate is rotatably connected with the support plate. The assisting damper comprises a shell I, a pin roll, a driving shaft, a driven shaft and a spring assembly, wherein a damper working chamber is arranged in the shell I; the driving shaft, the driven shaft and the spring assembly are all located in the damper working chamber; and when the driving shaft rotates, the driven shaft is driven to translate along the length direction of the damper working chamber.