| 摘要 |
The present invention provides a bearing structure comprising a first bearing (2) having a first inner race (3), a first outer race (4) and a first set of rolling elements (5) housed between the first inner race (3) and the first outer race (4) and a second bearing (6) having a second inner race (7), a second outer race (8) and a second set of rolling elements (9) housed between the second inner race (7) and the second outer race (8). A housing (24) surrounds the first bearing (2). A first compliant element (26) is fixedly connected to the first outer race (4). A rigid diaphragm (28) is fixedly connected at its radially inner end to the first outer race (4) at a position spaced from the connection between the first compliant element (26) and the first outer race (4). The diaphragm (28) is connected with a flexible element (28) to the housing (24) at its radially outer end. The first compliant element (26), first outer race (4) and diaphragm (28) define together with a casing (35) a pressure chamber (33). The first outer race (4) is axially slidable relative to the second outer race (8) such that an increase in pressure in the pressure chamber (33) causes a change in axial spacing between the first and second outer races (4, 8). This induces an additional axial load on the bearings (4, 8) which helps balance thrust load sharing and avoid skidding. |
