| 摘要 |
The present invention relates to a bearing arrangement (1) for a fluid machinery application (100) having an axially locating bearing position (10) and an axially non-locating bearing position (12), the axially locating bearing position (10) comprising: a first angular self-aligning contact bearing (11) arranged next to a second angular self-aligning contact bearing (31) for locating a shaft (2) against movement in an axial direction (A); the first angular self-aligning contact bearing (11) having a first set of rolling elements formed of rollers (15) arranged in a first row (22) and interposed between a first curved inner raceway (20a) and a first curved outer raceway (21a), wherein each roller (15) is a symmetrical barrel shaped roller having a curved raceway-contacting surface (15a) being engageable with the first curved inner raceway (20a) and the first curved outer raceway (21a), and wherein each roller (15) of the first angular self-aligning contact bearing (11) is inclined in relation to the axial direction of the shaft (2) by a first contact angle (± 2 ); whereby the rollers (15) are arranged to cooperate with the first curved inner raceway (20a) and the first curved outer raceway (21a) for supporting an axial force (F 1 ) and a radial force (F 2 ); the second angular self-aligning contact bearing (31) having a second set of rolling elements formed of rollers (35) arranged in a second row (32) and interposed between a second curved inner raceway (40a) and a second curved outer raceway (41a), wherein each roller (35) is a symmetrical barrel shaped roller having a curved raceway-contacting surface (35a) being engageable with the second curved inner raceway (40a) and the second curved outer raceway (41a), and wherein each roller (35) of the second angular self-aligning contact bearing (31) is inclined in relation to the axial direction of the shaft (2) by a second contact angle (± 1 ); whereby the rollers (35) are arranged to cooperate with the second curved inner raceway (40a) and the second curved outer raceway (41a) for supporting the axial force (F 1 ) and the radial force (F 2 ); wherein the axially non-locating bearing position (12) is arranged spaced apart from the axially locating bearing position (10), as seen in the axial direction (A). The present invention also relates to a fluid machinery application (100), such as wind turbine arrangement, water turbine arrangement or a propulsion turbine arrangement, comprising a bearing arrangement (1). |
