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Title:
WIND TURBINE BLADE PITCH VARIATION DEVICE, PITCH VARIATION METHOD, PITCH VARIATION CONTROL DEVICE, AND WIND TURBINE
Document Type and Number:
WIPO Patent Application WO/2019/007105
Kind Code:
A1
Abstract:
A wind turbine blade pitch variation device, comprising: a disc driving structure (300) perpendicular to the axis of a variable-pitch bearing (200), a rail (310) surrounding the axis of the variable-pitch bearing being provided on the disc driving structure; a first linear telescopic driving mechanism (400) connected to the rail by means of a first clamping component (405) capable of clamping the rail, the linear telescopic driving mechanism being hingedly connected to the first clamping component; and a second linear telescopic driving mechanism (500) connected to the rail by means of a second clamping component (505) capable of clamping the rail, the second linear telescopic driving mechanism being hingedly connected to the second clamping component. The wind turbine blade pitch variation device replaces an existing integral gear-driven pitch variation system, so as to implement segmented pitch variation of a wind turbine, thereby reducing the loss of friction between a driving gear and the gear surface of the variable-pitch bearing during pitch variation, and prolonging the service life of the variable-pitch bearing. Also disclosed are a pitch variation method, a pitch variation control device, and a wind turbine.

Inventors:
GU, Yaqi (No. 8, Boxing 1st Road Beijing,Economic & Technological Development Zone,Daxing District, Beijing 6, 100176, CN)
ZHU, Bing (No. 8, Boxing 1st Road Beijing,Economic & Technological Development Zone,Daxing District, Beijing 6, 100176, CN)
Application Number:
CN2018/079792
Publication Date:
January 10, 2019
Filing Date:
March 21, 2018
Export Citation:
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Assignee:
BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD. (No. 19, Kangding Road BeijingEconomic & Technological Development Zone,Daxing District, Beijing 6, 100176, CN)
International Classes:
F03D7/04
Foreign References:
CN206290368U2017-06-30
CN206054179U2017-03-29
CN102734067A2012-10-17
CN103867388A2014-06-18
KR20140003908U2014-06-25
CN201953567U2011-08-31
Other References:
None
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (Suite 1601, Tower E2 The Towers,Oriental Plaza, No.1 East Chang An Ave.,Dongcheng District, Beijing 8, 100738, CN)
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