| 摘要 |
<p>PURPOSE:To prevent temperature and pressure rises in middle bearings on an outer and an inner shaft by providing an oil discharging path connected to an annular oil discharging path after the secondary lubricating oil is fed through an annular oil feeding path to the middle bearing on the outer shaft, and a sealing member additively provided on an inner periphery at both or one end of an outside middle shaft. CONSTITUTION:An annular oil discharging path 33, which connects the primary lubricating oil (a) supplied through the central lubricating hole 26 of an inner shaft to plural outward radial oil discharging holes 27 severally drilled at plural circumferential spots on an outside middle shaft 11 at both the ends or the one end of the bearing metal 21 of a middle bearing 17 on an outer shaft after the primary lubricating oil (a) is led through the radial lubrication hole 25 of the inner shaft to the metal part of a middle bearing 23 on the inner shaft for lubricating the metal part, is provided. The cross sectional area of the oil discharging hole 27 can therefore be widened. In addition to that, since a sealing member 31 is additively provided on an inner periphery at both the end or the one end of the outside middle shaft 11, the lubricating oil for the middle bearing can be independently supplied and discharged.</p> |
