| 摘要 |
This lubricating circuit comprises a bearing surface (20) rotating with the shaft (10, 18), a juxtaposed surface of a centrifugal disc (24) also rotating with the shaft, a lubricant reservoir (14, 16) surrounding the centrifugal disc and a recirculation device for bringing the lubricant back to the bearing surface (20). The rotating surface adjacent to the bearing surface (20) may be provided with at least one helical groove. To reduce the friction and, subsequently, the wear within the recirculation device, the latter is provided with a slot (36) which is defined, on one hand, by a surface (32), rotating with the shaft (10, 18) and next to the bearing surface (20) and on the other hand, by a porous surface of the lubricant reservoir (14, 16) which is not in contact with the surface (20, 22, 24) rotating with the shaft (10, 18). Furthermore, the slot (36) may comprise a decreasing section in this rotation direction or it may be enlarged at one or several locations of its circumference to form chambers (38). Due to one or more of these features, the slot (36) acts as a dynamic pump. |
