Rotary oil feedthrough

摘要

A rotary oil feedthrough is provided for sealing off a pressurized oil compartment between a rotatable shaft and a shaft mount, where the rotary oil feedthrough displays a radial oil passage for connecting an oil duct of the shaft and/or the mount to the pressurized oil compartment in fluid-permeable fashion, and has a seal arrangement that seals off the pressurized oil compartment on both sides in the axial direction of the shaft. The rotary oil feedthrough displays a sealing ring carrier that can be fastened to the shaft or the mount in non-rotating and fluid-tight fashion, the sealing ring carrier being arranged coaxially to the shaft or the mount, and an adapter that can be positioned on the other component of shaft and mount in fluid-tight fashion, and is surrounded laterally by the sealing ring carrier in the axial direction of the shaft. Located between sealing ring carrier and adapter are two axially separated sealing rings that each lie on the sealing ring carrier and the adapter in sealing fashion in order to seal off the pressurized oil compartment in the axial direction of the shaft, and that can be rotated relative to the sealing ring carrier and/or the adapter. The rotary oil feedthrough displays the longest possible service life, the minimum possible leakage, and good response characteristics, and is of simple structural design.

主权项

1. An assembly comprising:
a rotatable shaft; a shaft mount; and a rotary oil feedthrough sealing off a pressurized oil compartment between the rotatable shaft and the mount, the rotary oil feedthrough comprising a radial oil passage connecting an oil duct of the shaft or the mount to the pressurized oil compartment in fluid-permeable fashion, a seal arrangement sealing off the pressurized oil compartment on both sides in an axial direction of the shaft, a discrete and monolithic sealing ring carrier fastened to the shaft or the mount in non-rotating and fluid-tight fashion, the sealing ring carrier being arranged co-axially to the shaft or the mount, and an adapter positioned on the other one of the shaft and the mount in fluid-tight fashion, the adapter being surrounded laterally by the sealing ring carrier in the axial direction of the shaft, and two axially separated sealing rings located between the sealing ring carrier and the adapter, each of the sealing rings displaying sealing surfaces lying on the sealing ring carrier and the adapter in sealing fashion, thereby sealing off the pressurized oil compartment in the axial direction of the shaft, and the sealing rings being rotatable relative to the sealing ring carrier or to the adapter or relative to both, each sealing ring being provided with a slit dividing a circumference thereof, wherein: the adapter has an assembly slit dividing a circumference thereof and the sealing ring carrier is radially positioned between each sealing ring and one of the shaft and the mount, at least a radially inner side of the sealing rings, faces toward the shaft is pressurized by the oil pressure, thereby pressing each sealing ring against the sealing surfaces thereof, and the sealing surface of each of the sealing rings which interacts with the adapter is arranged at an angle to the sealing surface of the sealing ring which interacts with the sealing ring carrier.