Three-guiding-rod synchronous variable pitch device and assembling method thereof

A technology of guide rods and synchronous discs, which is applied in the assembly of wind turbines, wind power generation, sustainable manufacturing/processing, etc., can solve problems such as unexpected changes in blade angles, jamming, and high manufacturing requirements, and achieve manufacturing requirements and costs. The effect of reducing the size of the hub and improving the mounting accuracy
CN109611273AInactive Publication Date: 2019-04-12SHANGHAI GHREPOWER GREEN ENERGY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI GHREPOWER GREEN ENERGY
Publication Date
2019-04-12
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a three-guiding-rod synchronous variable pitch device and an assembling method thereof. The three-guiding-rod synchronous variable pitch device is characterized in that a bladerotary bearing is included; the outer circle of the blade rotary bearing is connected with a blade, and the inner circle of the blade rotary bearing is connected with a hub; the outer circle of the blade rotary bearing is connected with a synchronous disc through a connecting rod; and three guiding sleeves are arranged on the synchronous disc, three parallelly-arranged guiding rods are arranged inthe three guiding sleeves correspondingly, and the synchronous disc can move front and back along the guiding rods. By changing the mounting mode of the rotary bearing, a set of brand new transmission structure is designed, thus the size of the hub is decreased by 20%, the blade mounting precision is improved, and a blade transferring flange with the high manufacturing requirements and cost is omitted; and a front guiding rod mounting seat and a rear guiding rod mounting seat are separated from the hub, thus the front guiding rod seat and the rear guiding rod seat are machined together, and the accuracy of a guiding mechanism of the synchronous disc is guaranteed.
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Description

technical field

[0001] The invention can be applied to the pitch angle adjustment mechanism of the impellers of wind power generators and hydraulic power generators, and its main functions are positioned as safety protection and power adjustment. Background technique

[0002] At present, in the field of pitch design and structure of small and medium-sized wind turbines, the three-blade synchronous pitch technology is widely used due to its low cost and simple control. The synchronous pitch structure generally uses a drive motor to simultaneously drive multiple blades to change the pitch. The pitch speed and angle of each blade are kept consistent, and there is no need to independently control a single blade. The specific motion conversion process is as follows: the rotary motion of the driving motor is converted into linear motion through the ball screw, and the linear motion of the screw nut is connected to the pitch connecting rod of each blade through the mechanism to pul...

Claims

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