| 摘要 |
Device for adjusting and positioning the upper support plate for the control cluster guides in relation to a thrust bearing secured to the vessel of a pressurised water nuclear reactor, comprising a set of two rings, an upper ring (22) and a lower ring (23) respectively, which are applied, one to the support plate (8) and the other to the thrust bearing (9), and between which a stack of preloaded spring washers (24) is housed. …<??>According to the invention this device is characterised in that it comprises a hollow connecting barrel (26) provided with an axial channel (44) and passing through the two rings, this barrel being intended to be engaged in a bore (20, 21) arranged in the plate or the thrust bearing, the lower ring (23) comprising means (27) for connecting to the barrel while the upper ring is mounted slideably in relation to the latter under the effect of the load applied to the spring washers, the barrel additionally comprising means (33) for being integrally attached to the plate or to the thrust bearing inside the bore which receives it, the means of connection between the lower ring (23) and the hollow barrel (26) being formed by radial pins (27) passing through passages (28) arranged transversely in the ring (23) and integrally attached to the latter, these pins entering housings (29) provided in the side surface of the barrel. …<IMAGE>… |
