Linkage type closestool support clamping mechanism, closestool cover plate connecting assembly and closestool cover plate

The invention discloses a linkage type closestool support clamping mechanism, a closestool cover plate connecting assembly and a closestool cover plate. The linkage type closestool support clamping mechanism is arranged in a sleeve and comprises a limiting part, and the limiting part is fixed to the inner wall of the sleeve, further comprises a lining, a driving piece, a rotating shaft and a linkage piece, and the driving piece and the linkage piece are provided with clamping ends used for being clamped and limited with a support. The lining is connected with the linkage piece, the driving piece, the rotating shaft and the limiting part are sequentially arranged in the lining, a first elastic piece is arranged between the rotating shaft and the limiting part, a second elastic piece is arranged between the limiting part and the linkage piece, and linkage is achieved by means of the characteristic that the two elastic pieces keep balanced stress. According to the closestool cover plate connecting assembly and t