| 摘要 |
The oil film damper (19) of a bearing structure is located between the facing surfaces (20e, 20e) of two bearings (20, 20) arranged facing and at a distance from each other in the direction of the rotation axis of a shaft (10) and is provided with: two protrusions (19h) protruding radially inward from the inner peripheral surface (19g) of a body section (19a) and adjacent to the facing surfaces, respectively, of the two bearings; oil conduction passages (19f) passing from the protrusions to the outer peripheral surface (19b) of the body section and conducting lubricating oil from the outer periphery of the body section to the bearings; sloped surfaces (19j) provided on the side of the protrusions, which is on the reverse side of adjacent surfaces of the protrusions, the adjacent surfaces being adjacent to the bearings, the sloped surfaces (19j) having an inner diameter gradually increasing as the sloped surfaces extend from the adjacent surfaces toward the rotation axis of the shaft; and oil discharge holes (19m) provided in the body section at positions between the two protrusions and discharging lubricating oil to the outside from the inside of the body section. |
