| 摘要 |
The present invention provides a load sharing stacked bearing structure (1) comprising a first bearing (2) having a first inner race (3), a first outer race(4) and a first set of roller 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 roller elements (9) housed between the second inner race (7) and the second outer race (8). A housing (24) surrounds the first and second bearings (2, 6). A first compliant element (25) is provided and connected between the housing (24) and the first outer race (4). The first compliant element (25), the first outer race (4) and the housing (24) define at least a part of the walls of a pressure chamber (30). 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 (30) causes a change in the axial spacing between the outer races (4, 8). This induces an additional axial load on the bearings (2, 6) which maintains preload on the bearings (2, 6) and which helps thrust load sharing between the bearings (2, 6). |
