Abstract: A chain drive for a link chain of mining conveyors or mining extraction machines, in particular for scraper chain conveyors, includes a drive shaft. The drive power or the drive torque is introduced into the link chain by chain tooth elements. The chain tooth elements are set directly in the drive shaft in seats. For that purpose, the chain tooth elements have a lower coupling portion for interlocking engagement in the seats in the drive shaft. Accordingly, a separate chain wheel is unnecessary.

Abstract: The invention relates to a chain drive (1) for link chains (2) of mining conveyors or mining extraction machines, in particular for scraper chain conveyors. The chain drive (1) comprises a drive shaft (3). The drive power or the drive torque is delivered to the link chain (2) by sprocket tooth bodies (4). According to the invention, the sprocket tooth bodies (4) are set directly into the drive shaft (3) in seats (6). For that purpose, the sprocket tooth bodies (4) have a lower coupling section (8) for interlocking engagement in the seats (6) in the drive shaft (3). According to the invention, a separate sprocket is no longer necessary.