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US 7,547,985 B2Granted
Wind turbine apparatus
AssigneeKanzaki Kokyukoki Mfg. Co., Ltd.
InventorsKazuhiko Takaichi, Junichi Hitachi, Yukiyasu Mizuno, Tooru Minamii
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AssigneeKanzaki Kokyukoki Mfg. Co., Ltd.
InventorsKazuhiko Takaichi, Junichi Hitachi, Yukiyasu Mizuno, Tooru Minamii
Estimating the term…
Conventionally, a main shaft of the wind turbine apparatus has awkward such as heaviness or difficulties of assembling, since the length of the main shaft must be long to support a generator rotor. It is requested originally to light heaviness of a wind turbine apparatus, since it supports a wind wheel and a generator etc. on a tower at prescribed height. A hub 29 supported on the one side of the main shaft 10, a generator rotor 12 supported on the other side of the main shaft 10, the main shaft housing 40 and the generator housing 20 are combined, the generator rotor 12 having a backward opening is fixedly provided on the rear end of the main shaft 10, the main shaft 10 and the generator rotor 12 are detachably fixed through the opening, and a rotational fitting (rod bearing 33) for a pitch control shaft 37 is at least disposed at the rear space of the generator housing 20.
A wind turbine apparatus comprising a turn base on a top of a tower, a counter on the turn base, a stay on the counter, a main shaft housing and a generator housing on the stay, a bearing provided between the main shaft housing and a main shaft, a hub supported on the one side of the main shaft, and a generator rotor supported on the other side of the main shaft.
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Wherein the turbine is a wind turbine: generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
Wind motors characterised by the driven apparatus: the apparatus being an electrical generator
Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components: assembly of wind…
Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components: arrangements for…
Term ended 16 Jun 2026 (estimated)
1. Field of the Invention
The invention relates to a wind turbine apparatus for generating electrical energy by means of wind energy, especially relates to a wind turbine apparatus having a variable pitch angle mechanism of wings.
2. Background Art
FIG. 1 is a front view that shows one embodiment of a wind turbine apparatus 1 to which the present invention is applied.
FIG. 2 is a side view cross section that shows a structure in nacelle 5 of the wind turbine apparatus 1.
FIG. 3 is an expansion side view cross section that shows around the main shaft 10.
Next, embodiments of the invention are described.
FIG. 1 is a front view that shows one embodiment of a wind turbine apparatus 1 to which the present invention is applied,
FIG. 2 is a side view cross section that shows a structure in nacelle 5 of the wind turbine apparatus 1,