Central-chain bucket elevator chain

The utility model discloses a central-chain bucket elevator chain which is wear resistant and convenient for processing, comprising an outer chain plate (2), an inner chain plate (8), wherein the outer chain plate (2) and the inner chain plate (8) are connected by a hinge pin (6) covered with a sleeve (4) and two ends of the hinge pin (6) are equipped with a shaft end bushing (5). The central-chain bucket elevator chain is characterized in that the outer chain plate (2) and the inner chain plate (8) are respectively equipped with a positioning boss (1) for positioning of the inner chain plate (8) and the outer chain plate (2); and a labyrinth dust-proof structure (10) is positioned at the connections of the outer chain plate (2), inner chain plate (8), sleeve (8) and shaft end bushing (5). The central-chain bucket elevator chain has a simple structure, wherein the labyrinth dust-proof structure can prevent large-particle slag from falling into gaps between the sleeve and the hinge pin and prevent abrasive wea