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US 2003/0075346 A1Published application
Rock drilling machine
AssigneeSandvick Tamrock Oy
InventorsJarmo Heinonen, Jorma Maki
Life of this patent
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Abstract
A rock drilling machine comprising a rotating device (1), a percussion device (2) and a shank (17) where a tool (18) is to be fastened. According to the inventive idea, lubricant used for lubricating the shank is supplied in suitable conduits to pressurize the holes (3a′-3f′) of coupling bolts that join together the different parts of the drilling machine and delivered further in suitable conduits to serve as lubricant on the bearing surfaces between the rock drill and the feed equipment (21).
Claims8
A rock drilling machine, being mounted on bearings to be movable with respect to feed equipment,
- the drilling machine comprising:
- at least two blocks joined together with coupling bolts,
- a rotating device,
- a percussion device,
- a shank,
- at least one feed conduit for delivering pressurized lubricant to the shank,
- at least one return conduit for delivering the lubricant used for lubricating the shank from the shank into at least some of the holes of the coupling bolts, whereby at least some of the spaces surrounding the coupling bolts are pressurized, and
- at least one conduit for supplying the lubricant further to lubricate the bearing surface between the rock drill and the feed equipment.
5 more elements
Dependencies are inferred from the claim text.