Firm in connection's layer door gear

The utility model relates to a firm in connection's layer door gear. Joint strength between each part of door gear of current layer is not good enough, can not wholly transport and install. The utility model discloses a layer door subassembly, sill subassembly and door pocket, the transversal C that personally submits of door pocket appears, set up the curb plate in the riser both sides includingriser and parallel, the curb plate dorsad the riser the trailing edge in opposite directions bending type become the stiffened edge, the door pocket be two and cross -over connection at the corresponding tip of sill subassembly and layer door subassembly within a definite time for the sill subassembly is fixed with layer door subassembly relative position. Change original door pocket structure into take the stiffened edge C shape structure, effectively improve the door pocket deformation resistance can, both facilitate the whole transportation of landing door device, can also integral erection, reduce the influence to