| 摘要 |
The invention relates to a feed system, rack bar and drive sprocket for moving an underground winning machine, comprising a travel drive with drive sprocket having symmetrically profiled teeth, and rack bars 1 with a plurality of rack teeth 2; 20, being arranged between a supporting strip 7 and a guide strip 5 of the rack bar. The tooth flanks 14; 24 of the teeth 2, 20 are inclined in the direction of movement and diverge towards the tooth tip 13; 23 for the interaction with tooth surfaces 34 of teeth 31 of drive sprocket 30. In order to provide a feed system, including rack bars and drive sprockets therefor, in which interaction between the teeth is improved and produces less wear, the two tooth flanks 14, 24 of each rack tooth 2, 20 are concavely arched and form a trough between guide strip 5 and supporting strip 7 transversely to the direction of movement, with the trough rising towards the tooth tip 13; 23, and the two tooth surfaces 34 of each drive sprocket tooth 31 is convexly arched and forms a crown transversely to the direction of movement. |
