FIELD: materials handling equipment; scraper conveyors. SUBSTANCE: proposed scraper chain belt for conveyor with middle or duplex middle chain has scrapers detachably installed in horizontal links of chain of single-line or two-line chain belt. Vertical links of chain hinge-coupled with horizontal links of chain are provided with longitudinal necks non-round in cross-section whose thickness is less than thickness of nose parts connecting longitudinal necks of these links. Scrapers have fixed connecting and locking trunnions which pass through inner holes of horizontal links of chain between coupled vertical links of chain, and parts of trunnions getting out of inner holes form locking sections designed for fixing the scrapers. Width of locking sections is greater than free space in inner holes of horizontal links of chain between nose parts of both coupled vertical links, but is less than free space formed at turning of coupled vertical links of chain in deflected position in which their longitudinal necks enclose nose parts of horizontal links of chain in their inner hole. EFFECT: provision of reliable connection scrapers on single line or two-line scraper chain. 19 cl, 4 dwg
