| 摘要 |
<p>The present invention relates to a dust controlling device (100) forrock drilling comprising of an elastic sheet structure (101) having a circular hole (106) adapted for being penetrated by a drill bit (130) of a rock drill (116), the circular hole having an edge (110), whereina plurality of bristles (120) is projecting from the edge (110) of the circular hole (106), wherein each bristle (120) projects toward a center (122) of the circular hole (106), the plurality of bristles (120) projecting in such a way that the inward ends (124) of the bristles will engage with a stem (112) connected to the drill bit (130) when accommodated in the center (122) of the circular hole (106). For publication: Fig</p> |
