Planetary gear stage
AssigneeHansen Transmissions International NV
InventorPeter Flamang
Life of this patent
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Abstract
A gear unit comprises a planetary stage having at least one bearing which locates a planet carrier rotatably relative to a ring gear, wherein a bearing ring A is subject to local deformation as the planet carrier rotates relative to the ring gear, and wherein a bearing ring B, which is rotatable synchronously with the planet carrier, is precompensated whereby, in comparison with a non-precompensated bearing ring B, radial squeezing of the rolling members of bearing or load concentrations or local unloading of the rolling members of the bearing is reduced.
Claims10
A gear unit comprising a planetary stage having at least one bearing construction which locates a planet carrier rotatably relative to a ring gear, wherein a bearing ring A of said bearing construction is subject to local deformation as the planet carrier rotates relative to the ring gear, and wherein said bearing construction comprises a bearing ring B, which is rotatable synchronously with the planet carrier, is precompensated whereby, in comparison with a non-precompensated bearing ring B, radial squeezing of the rolling members of the bearing or load concentrations or local unloading of the rolling members of the bearing is reduced.
A gear unit according to anyone of the preceding claims wherein precompensation is achieved at least in part by selective pre-load of a supporting structure on or in which the bearing ring B is located.
A gear unit substantially as hereinbefore described with reference to FIG. 4.
A wind turbine gear transmission assembly comprising a gear unit according to any one of the preceding claims.
Dependencies are inferred from the claim text.