| 摘要 |
1,130,254. Bearings; lubricating gearing. RHEINSTAHL HUTTENWERKE A.G. 11 Nov., 1966 [13 Nov., 1965], No. 50768/66. Headings F2A and F2Q. In an arrangement for lubricating and cooling a journal bearing, a reservoir of oil lubricates the bearing and an overflow of oil from the reservoir cools the bearing. In an embodiment, a bearing 3 of a planet-gear 1 is provided with lubricating grooves 5, Fig. 1, and with peripheral cooling-grooves 6: and is mounted in a planet-carrier 4. The grooves 5 are fed with lubricant through a tube 10, a flared opening 9 of which collects oil from a rotating oil-collector channel 8, the latter being supplied with oil from an oil-feed conduit 7. Surplus oil from the tube 10 is passed through radial ports 11 therein into an annular duct 12 which surrounds the tube 10, and is conveyed, by means of a distributer-groove 13, to the cooling- grooves 6. The coolant oil is collected by a groove 14 and is passed to a gear-box through bores 15, in the planet-carrier 4. In another embodiment, an oil-feed conduit 16, Fig. 2, is rigidly connected to a planet-carrier 4 and throttling is provided at either a port 11 or at the outlet bores 15. In a modification, the planet-carrier 4 could be provided with an annular distribution groove and the peripheral cooling-grooves 6 in the bearing 3 could then be replaced by longitudinally-extending grooves. Thus the bores 15 in the planet-carrier 4 would be rendered unnecessary. In a further embodiment, a planet gear 17, Fig. 4, is rotatably mounted on a hollow shaft 20 by means of bushes 18. The shaft 20 is fixed in a planetcarrier 19; is provided with radial bores 24, which connect to lubricating-grooves 23; and has an overflow tube 25, which extends through the wall of the shaft 20 and projects a predetermined distance radially inwards of the shaft. Thus a segmental reservoir is formed in the shaft. In use, oil is supplied to the segmental reservoir from a feed-conduit 21 and a collector-trough 22; the oil is then centrifuged through the radial zones 24 and into the lubricating-grooves 23. When the reservoir overflows oil is passed through the tube 25 and into a chamber 26 which leads to cooling-ducts 27. In a modification, the ducts 27 are connected with radial bores leading to spaces between the gear-teeth. |
