Journal bearing device

摘要

In a journal bearing device having an upper bearing liner, a lower bearing liner, an upper base metal and a lower base metal, the lower bearing liner is divided into a sliding portion having a sliding surface and a clearance portion provided with a space between the lower bearing liner and a rotor, and is provided with an oil path formed on a back side of the sliding portion and extending from a border portion between the sliding portion and the clearance portion toward an upstream side in the rotational direction of the rotor, and an oil supply hole extending from an upstream end portion of the oil path to the sliding surface, and the lower base metal has an oil supply path and extending from an outer circumferential side of the lower base metal to the oil path at the border portion.

主权项

1. A journal bearing device comprising:
an upper bearing liner included in an upper part thereof; a lower bearing liner included in a lower part thereof; an upper base metal provided on an outer circumferential side of the upper bearing liner; and a lower base metal provided on an outer circumferential side of the lower bearing liner; wherein the lower bearing liner is divided into a sliding portion having a sliding surface and a clearance portion provided with a space between the lower bearing liner and a rotor to be supported by the bearing device and provided in a downstream end portion of the lower bearing liner in the rotational direction of the rotor, and is provided with an oil path formed on a back side of the sliding portion and extending from a border portion between the sliding portion and the clearance portion toward an upstream side in the rotational direction of the rotor, and an oil supply hole extending from an upstream end portion of the oil path to the sliding surface of the sliding portion, wherein the lower base metal has an oil supply path to be supplied with lubricant from outside the bearing device and extending from an outer circumferential side of the lower base metal to the oil path at the border portion, and wherein the bearing device is configured such that whole lubricant to be supplied into the bearing device passes through the oil path.