| 摘要 |
A continuous miner drum ( 10 ) comprises a cylindrical body ( 11 ) having an outer cylindrical surface ( 12 ). Extending from the surface ( 12 ) are "start" vanes ( 13 ), with each vane extending angularly and longitudinally with respect to the longitudinal axis ( 15 ) of the drum. Positioned on each vane is a plurality of picks ( 16 ), each pick having a leading face, a trailing face and side faces between which the leading and trailing faces extend. Upon rotation of the drum each pick follows a cutting path with picks of adjacent paths being spaced by a longitudinal distance of between 30 mm and 100 mm measured between adjacent side faces of the picks of adjacent cutting paths.
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