| 摘要 |
<p>The invention relates to a rotary cleaning brush device for cleaners of paved surfaces, whose brushes (2) are aligned perpendicularly to the straight travel direction of the cleaner and have peripheral regions which are formed of an orderly succession of projections (8) and recesses (9), the projections (8) of each brush (2) fitting into the recesses (9) of another brush (2), and having at least one pair of brushes (2) arranged with their respective axes of rotation (4) convergent together in a direction away from a surface (7) to be swept, the brushes (2) being rotated in a direction which produces, in the areas of least mutual distance between the brushes (2), tangent velocities which are on the average oppositely directed with respect to the straight travel direction of such cleaners.</p> |
