| 摘要 |
A chain wheel arrangement for driving or reversing stations of underground scraper chain conveyors, comprising a chain wheel ( 1 ), a chain-wheel shaft ( 3 ) comprising a splined portion ( 11 ) between two offset-diameter shaft stub portions and to which the chain wheel ( 1 ) can be fastened in rotational engagement by axial sliding on to it, also comprising bearing shells ( 5 ) receiving bearings for the chain-wheel shaft ( 3 ), disposed on each side of the chain wheel ( 1 ) and adapted to be fastened in bearing-shell recesses, open at the edges, in the side cheeks of the driving or reversing station, also comprising bearing support rings ( 26 ) which abut the outer cage ( 4 B) of the bearings ( 4 ), and securing means comprising spacer sleeves ( 16 ) for axially securing the chain wheel ( 1 ) relative to the splined portion ( 11 ), in which the spacer sleeves ( 16 ) rest loosely between the bearings ( 4 A) and the chain wheel ( 1 ), wherein a clamping cover ( 30 ) is fastened to at least one shaft end ( 13 ) and presses against a clamping sleeve ( 29 ) which clamps a spacer ring ( 25 ) against the associated bearing ( 4 ).
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