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Wind power generator and variable pitch mechanism thereof

A pitch bearing and pitch angle technology, applied in wind turbines, wind power generation, engines, etc., can solve the problems of low service life of the pitch mechanism, reducing the elastic deformation of the pitch bearing, reducing the fatigue stress of the wheel hub, etc.

Inactive Publication Date: 2019-06-07
CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pitch-changing mechanism, which has a simple structure, is used to reduce the elastic deformation of the pitch-changing bearing and reduce the fatigue stress on the hub, and solves the problem of low service life of the pitch-changing mechanism

Method used

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  • Wind power generator and variable pitch mechanism thereof
  • Wind power generator and variable pitch mechanism thereof
  • Wind power generator and variable pitch mechanism thereof

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Please refer to Figure 1 to Figure 4 , figure 1 It is a structural schematic diagram of a pitch-changing mechanism in the prior art; figure 2 It is a schematic structural diagram of a pitch-changing mecha...

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Abstract

The invention discloses a variable pitch mechanism which comprises a hub, a rotor blade, a variable pitch bearing and a reinforcing portion. The rotor blade is arranged in a wind facing manner and drives the hub to rotate. The variable pitch bearing is connected with the hub and used for adjusting the wind facing pitch angle of the rotor blade. The reinforcing portion is arranged between the variable pitch bearing and the rotor blade, and used for reducing elastic deformation of the variable pitch bearing. The variable pitch mechanism is simple in structure, is used for reducing the elastic deformation of the variable pitch bearing and reducing fatigue stress borne by the hub, and the problem that the service life of the variable pitch mechanism is short is solved. In addition, the invention further discloses a wind power generator comprising the variable pitch mechanism.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a pitch-changing mechanism. In addition, the present invention also relates to a wind power generator comprising the above-mentioned pitch control mechanism. Background technique [0002] In the process of wind turbine generating electricity, since the intensity of natural wind is a value that may change at any time, in order to ensure the stability of power generation, it is necessary to ensure that the speed of the fan blades remains stable, that is, it needs to be adjusted according to the strength of the wind. Adjust the windward pitch angle of the fan blades to keep the moment of the fan blades stable. [0003] At present, a fan pitch mechanism, such as figure 1 As shown, the mechanism includes a hub 01 , a pitch bearing 02 and a rotor blade 03 , wherein the hub 01 is fixedly connected to the outer ring of the pitch bearing 02 , and the rotor blade 03 is fixe...

Claims

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Application Information

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IPC IPC(8): F03D80/00
CPCY02E10/72
Inventor 谭术平冀满忠韩佳肖长远肖航
Owner CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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