| 摘要 |
A grease applicator for the threaded joint section of a drill shaft of a blasthole drill. The grease applicator has a grease applicator head movable to an application position adjacent the threaded section of the drill shaft by an applicator drive. The drive extends the applicator head to and extracts the applicator head from the application position. When the applicator head is at the application position, a propelling device for moving grease through the applicator head into engagement with the threaded section is activated to apply the grease to the threaded section. To distribute the grease over the threaded section, the applicator head may have a shape partially surrounding the threaded section. The threaded joint section is vertically positioned in the path of movement of the grease applicator head and the applicator head is extended by the applicator drive along a path toward the threaded section. After grease is propelled through the applicator head into engagement with the threaded section, the grease applicator head is retracted away from the threaded section along the path by the applicator drive. |
