| 摘要 |
<p>The invention relates to a distribution head intended to fit out a hydraulic turbine, for distributing the pressurized oil to a servo engine, and to a resilient bushing the said head is provided with. According to the invention, the distribution head comprises a distribution column (), some resilient guiding bushings (), namely a lower bushing and an upper bushing, and two concentrical guiding bodies forming a solid vertically moving piece which is supported by a flange-holder hub () threaded within a connection flange () having some portholes (), the distribution column () being guided by means of the resilient bushings () which are placed at certain distance, in different zones, the lower bushing () being mounted on the hub () and fixed by a cover () with rotation-preventing cells under the connection flange (), where it guides the external part of the distribution column (), while the upper bushing () is placed on top of the connection flange (), where it guides the internal part of the distribution column () and fixed, by means of a support () to the transducer which is provided, in its turn, with rotation-preventing cells. The bushing, as claimed by the invention, has a main body which, at the oil intake part has a ring with a scraping edge, having the role of preventing foreign bodies, possibly brought by the oil, to enter the friction zone, as well as a resilient part with a bellows-type deformable profile and, at the extremities, with an L-shaped cuff-type profile for pressurized oil sealing purposes, and at one end having prominent cells intended to ensure anti-rotation blocking and radial oscillations taking over.</p> |
