US 12,352,307 B2
Bearing device
Takuzo Shigihara, Tokyo (JP); Chihiro Yoshimine, Tokyo (JP); Shimpei Yokoyama, Tokyo (JP); Yuki Kameyama, Tokyo (JP); and Yoshitomo Noda, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 18/033,478
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Mar. 7, 2022, PCT No. PCT/JP2022/009730
§ 371(c)(1), (2) Date Apr. 24, 2023,
PCT Pub. No. WO2022/249627, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 2021-087514 (JP), filed on May 25, 2021.
Prior Publication US 2023/0407916 A1, Dec. 21, 2023
Int. Cl. F16C 3/10 (2006.01); F16C 17/03 (2006.01); F16C 33/10 (2006.01)
CPC F16C 17/03 (2013.01) [F16C 33/1045 (2013.01); F16C 33/1065 (2013.01); F16C 33/107 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A bearing device comprising:
a plurality of bearing pads that tiltably support a rotating shaft rotating around an axis, from an outer peripheral side, and that are provided at intervals in a circumferential direction; and
an oil supply unit that supplies oil to a gap between a pad surface of each of the bearing pads and an outer peripheral surface of the rotating shaft, the pad surface facing the rotating shaft,
wherein the plurality of bearing pads includes a single first bearing pad that supports the rotating shaft from directly below the axis, and a pair of second bearing pads disposed to sandwich the first bearing pad between the second bearing pads in a rotation direction,
a groove extending in the rotation direction is formed only in the pad surface of each of the second bearing pads out of the first bearing pad and the pair of second bearing pads, and
for each second bearing pad, the groove is open only on a leading side surface of the second bearing pad and extends along the pad surface from the leading side surface toward a trailing side surface of the second bearing pad, and ends at an intermediate position on the pad between the leading side surface and the trailing side surface.
 
3. A bearing device comprising:
a plurality of bearing pads that tiltably support a rotating shaft rotating around an axis, from an outer peripheral side, and that are provided at intervals in a circumferential direction; and
an oil supply unit that supplies oil to a gap between a pad surface of each of the bearing pads and an outer peripheral surface of the rotating shaft, the pad surface facing the rotating shaft,
wherein the plurality of bearing pads includes a single first bearing pad that supports the rotating shaft from directly below the axis, and a pair of second bearing pads disposed to sandwich the first bearing pad between the second bearing pads in a rotation direction,
a groove extending in the rotation direction is formed only in the pad surface of each of the second bearing pads out of the first bearing pad and the pair of second bearing pads,
wherein each of the plurality of bearing pads has a pair of side surfaces that connect the pad surface and a back surface located opposite to the pad surface, and that face an axis direction,
the groove includes a first groove that is open on one side surface of the pair of side surfaces, and that separates away from the one side surface as the first groove extends in the rotation direction, and a second groove that is open on the other side surface of the pair of side surfaces, and that separates away from the other side surface as the second groove extends in the rotation direction, and
the first groove extends to a closed end at a tip of the first groove in the rotation direction, the second groove extends to a closed end at a tip of the second groove in the rotation direction, and the closed end of the first groove and the closed end of the second groove are spaced apart from each other in the axis direction.
 
5. A bearing device comprising:
a plurality of bearing pads that tiltably support a rotating shaft rotating around an axis, from an outer peripheral side, and that are provided at intervals in a circumferential direction; and
an oil supply unit that supplies oil to a gap between a pad surface of each of the bearing pads and an outer peripheral surface of the rotating shaft, the pad surface facing the rotating shaft,
wherein the plurality of bearing pads includes a single first bearing pad that supports the rotating shaft from directly below the axis, and a pair of second bearing pads disposed to sandwich the first bearing pad between the second bearing pads in a rotation direction,
a groove extending in the rotation direction is formed only in the pad surface of each of the second bearing pads out of the first bearing pad and the pair of second bearing pads, and
for each second bearing pad, the groove is open only on a trailing side surface of the second bearing pad and extends along the pad surface from the trailing side surface toward a leading side surface of the second bearing pad, and ends at an intermediate position on the pad between the trailing side surface and the leading side surface.