| 摘要 |
PROBLEM TO BE SOLVED: To provide a lube oil feeder having a simplified structure which can supply a lube oil to bearings of a motor main shaft. SOLUTION: An impeller installed on a low-speed shaft 41 is driven to rotate by transmitting a rotation of the main shaft 11 of the motor 10 to the low-speed shaft 41 by way of rotating shaft 30 directly connected to the main shaft 11 through a speed reduction mechanism 20. The main shaft 11, the rotating shaft 30 and the low-speed shaft 41 are connected in vertical position and hollow sections 11a, 30a, 41a set up inside of each shaft 11, 30, 41 extending from top to bottom are interconnected with each other. In the area corresponding to the position of a bearing 17 of the main shaft 11, an interconnecting port 11b is arranged to connect the hollow section 11a with its exterior section. The lube oil supplied to the hollow section 41a through an interconnecting hole 41b arranged on the low-speed shaft 41 from a oil reservoir section R is fed to a bearing 17 through an interconnecting hole 17b by lifting up along the internal circumference of the hollow sections 11a, 30a, 41a under an action of centrifugal force due to the rotation of each shaft 11, 30, 41.
|
