| 摘要 |
<p>Provided is a bearing method and a device, wherein: a cylindrical floating bearing (16) is arranged on the circumference of a turbine shaft (12) on the inside of a bearing housing (14); and two retaining rings (20a, 20b) sandwich the floating bearing and are fitted and fixed in a recessed groove (16) formed in the inner circumferential surface of the bearing housing (14). An oil supply hole (24) that opens to the inner circumferential surface (14a) of the bearing housing (14) is arranged closer to the retaining ring (20a). Lubricating oil supplied from the oil supply hole (24) makes a greater oil pressure operate on a side surface (22a) than on a side surface (22b) of the floating bearing (16) and an action force (F) in the center shaft (C) direction is generated. A side surface (16d) of the floating bearing (16) is pressed down onto the side surface (22b) of the retaining ring (20b) by the action force (F), the rotation speed of the floating axis (16) is reduced by the frictional force generated between both side surfaces, and self-excited vibration is suppressed.</p> |
