| 摘要 |
A lubrication system for a drill rod shank in a percussion drilling machine, said drilling machine comprising a frame (1), a rotating sleeve (2) rotatably mounted in the frame and provided with a housing (5) for the shank (7) of the drill rod (6a, 6b), a tooth ring (10) in the sleeve in axially slideable and rotating engagement with a tooth ring (11) in the shank, rotating means (4) for rotating the sleeve around the axis of its tooth ring, and percussion means (9) for applying axial percussions on the drill rod shank. The drilling machine comprises a lubricant supply channel system (17-14) terminating in that flank of each tooth of the tooth ring (10) of the sleeve which is located forward in the direction of rotation of the sleeve for conducting lubricant under pressure between those flanks of the teeth of the tooth rings (10, 11) which are in pairs pressed against each other when the sleeve rotates the drill rod shank. Longitudinal grooves (30) are provided for removing oil to chamber (22), filter (25) and container (20). Compressed air may be utilised to aid oil flow. <IMAGE> |
