Pitch bearing, blade, impeller of wind turbine and connecting method for wind turbine
AssigneeBeijing Goldwind Science & Creation Windpower Equipment Co., Ltd.
InventorArsenii KHVYIUZOV
Life of this patent
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Abstract
The invention relates to a pitch bearing, a blade, an impeller of a wind turbine and to a connecting method for the wind turbine. There is provided a pitch bearing of a wind turbine comprising: an inner bearing ring, an outer bearing ring and an extension portion, wherein one of the inner bearing ring and the outer bearing ring is connected to the extension portion. With the pitch bearing, blade, impeller of the wind turbine and the connecting method for the wind turbine according to the disclosure, it is possible to connect the blade to the pitch bearing without bolts, allow a lower weight for the wind turbine, increase strength and fatigue life of the wind turbine, and allow a lower manufacturing cost and difficulty for the wind turbine.
Claims26
A pitch bearing of a wind turbine comprising:
- an inner bearing ring, an outer bearing ring and an extension portion, wherein one of the inner bearing ring and the outer bearing ring is connected to the extension portion, wherein the extension portion comprises an outer extension portion and an inner extension portion, wherein the outer extension portion and the inner extension portion are radially spaced from each other to form a radial space.
(canceled)
A blade for a wind turbine, comprising:
- a blade root, comprising:
- at least one second hole which is provided in a radial direction of the blade root.
-12. (canceled)
(canceled)
An impeller of a wind turbine, comprising:
- a blade, comprising a blade root, comprising at least one second hole which is provided in a radial direction of the blade root;
- a connection device, comprising:
- an extension portion;
- and
- at least one pin, wherein the pin is connected to the extension portion;
- and
- a pitch bearing, comprising an inner bearing ring and an outer bearing ring, wherein one of the inner bearing ring and the outer bearing ring is connected to the extension portion, the extension portion comprises an outer extension portion and an inner extension portion,
- wherein the outer extension portion and the inner extension portion are radially spaced from each other to form a radial space, and
- wherein the blade root is disposed in the radial space between the outer extension portion and the inner extension portion,
- wherein the pin is connected to the blade root through the second hole.
-23. (canceled)
(canceled)
Dependencies are inferred from the claim text.