The invention discloses an operation mechanism and a framework assembly. An energy storing main shaft is arranged on left and right wall plates of the framework assembly body. Support wall plates are used for separating and supporting the left and right wall plates so that the left and right wall plates and the support wall plates are fixed or integrated to form a mechanism box body. Thus, the energy storing main shaft and other parts in the operating mechanism are assembled via a box type structure. Compared with a traditional clamp plate type structure, the whole operating mechanism is high in framework rigidity, positioning precision, anti-corrosion performance and stability. Via the box-type structure, support bearings among clamp plates are saved, parts of framework assembly of the whole operating mechanism are reduced, and reliability is greatly reduced.