A blade pitch adjustment mechanism for a vertical axis wind turbine

A wind turbine, vertical axis technology, applied in the control of wind turbines, wind turbines, wind turbines at right angles to the wind direction, etc., to achieve the effects of less space occupation, improved self-starting performance, and good rigidity

Inactive Publication Date: 2017-05-17
TIANJIN VOCATIONAL INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this scheme can only passively adjust the overall pitch

Method used

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  • A blade pitch adjustment mechanism for a vertical axis wind turbine
  • A blade pitch adjustment mechanism for a vertical axis wind turbine
  • A blade pitch adjustment mechanism for a vertical axis wind turbine

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with specific embodiments.

[0016] As shown in the accompanying drawings, a blade distance adjusting mechanism of a vertical axis wind power generator of the present invention includes a vertically arranged vertical shaft, three stepping motors installed on the vertical shaft, a traction mechanism part and a pitch changing mechanism part, and The output shafts of the three stepping motors are respectively connected with worm gear mechanisms, and the line connecting the centers of the three worm gears forms an equilateral triangle at a horizontal position. The traction mechanism part includes a traction parallel mechanism composed of three traction branch chains, and each traction branch chain includes a driving rod and a traction parallelogram structure. Each traction parallelogram structure includes two traction links, a first lower ball pair and a first upper ball pair are respectively installed a...

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Abstract

The invention discloses a blade distance adjusting mechanism of a horizontal-axis wind turbine. The blade distance adjusting mechanism of the horizontal-axis wind turbine comprises a vertical shaft, three stepping motors, a traction mechanism portion and a distance changing mechanism portion, wherein the vertical shaft is arranged perpendicularly; the three stepping motors are arranged on the vertical shaft; output shafts of the three stepping motors are respectively connected with a worm gear and worm mechanism; the traction mechanism portion comprises a traction parallel mechanism consisting of three traction branched chains; each traction branched chain comprises a driving rod and a traction parallelogram structure; the distance changing mechanism portion comprises a distance changing parallel mechanism consisting of a plurality of distance changing branched chains; and the number of the distance changing branched chains is the same with that of blades. By the parallel mechanisms, an eccentric plate can move in three-dimensional space in a translational manner. The blade distance adjusting mechanism is high in rigidity, high in carrying capacity and high in distance adjusting precision.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a blade pitch adjustment mechanism of the wind power generator. Background technique [0002] Existing wind power generators are divided into horizontal axis wind power generators and vertical axis wind power generators. There are two types of vertical axis wind turbines: drag type and lift type. The drag-type vertical-axis wind turbine uses resistance to do work to generate rotation, and has a large starting torque, but the tip speed ratio is less than 1, and the output power is small; the lift-type vertical-axis wind turbine uses lift to do work to generate rotation, and the tip speed ratio It can be very high and the output power is very high. [0003] Usually, the blade pitch adjustment mechanism of the lift-type vertical axis wind turbine can only adjust the overall pitch of the blades (the pitch angles of the blades at different position angles are the same), which makes it have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/06F03D3/06
CPCY02E10/74
Inventor 廉正光张宏伟
Owner TIANJIN VOCATIONAL INST
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