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Tightness adjusting device and method of toothed belt, pitch transmission system

A technology of adjusting device and tightness, which is applied in the direction of transmission device, engine, wind turbine, etc., can solve the problems such as the accuracy reduction of the blade rotation angle and the inability to adjust in real time, and achieve the effect of avoiding inaccurate manual adjustment and avoiding breakage

Active Publication Date: 2020-04-07
XINJIANG GOLDWIND SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the tension degree of the elastic band will be adjusted before the hoisting is completed, and cannot be adjusted in real time
As the degree of tightness of the toothed belt may change during actual operation, the accuracy of the blade rotation angle is reduced

Method used

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  • Tightness adjusting device and method of toothed belt, pitch transmission system
  • Tightness adjusting device and method of toothed belt, pitch transmission system
  • Tightness adjusting device and method of toothed belt, pitch transmission system

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Embodiment Construction

[0043] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention.

[0044] An embodiment of the present invention provides a device and method for adjusting the tightness of a toothed belt of a wind power generating set, and a pitch transmission system, which are used in the pitch system of a wind generating set, and adopt the tightness adjusting device and method in the embodiment of the present invention. method, the degree of tightness of the toothed belt 105 can be adjusted in real time.

[0045] When the wind turbine is not started, the blades are in the retracted state (refer to figure 2 ), during the start-up process of the wind turbine, the pitch system drives the blades to rotate from 90° to 0°, so that the blades are in an open state (see image 3 ).

[0046] see...

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Abstract

The invention provides a tightness-degree adjusting device and method for a toothed belt and a variable-pitch transmission system. The tightness-degree adjusting device for the wind-generating-set toothed belt comprises a hydraulic oil cylinder with a piston rod, an oil pressure detector, a controller and an oil pressure actuator, wherein the end, extending out of the hydraulic oil cylinder, of the piston rod and the axle center of a tensioning wheel are fixed; the oil pressure detector is configured for detecting actual oil pressure of the hydraulic oil cylinder; the controller is configuredfor comparing standard oil pressure with the actual oil pressure and generating an oil pressure control command according to the comparison result; the oil pressure actuator is configured for implementing control operation to oil pressure of the hydraulic oil cylinder according to the oil pressure control command. By means of the tightness-degree adjusting device in the embodiment, the tightness degree of the toothed belt can be adjusted in real time.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a device and method for adjusting the tightness of a toothed belt of a wind power generating set, and a pitch transmission system. Background technique [0002] The toothed belt is a transmission belt with a toothed structure on the working surface. The toothed belt transmits power through the meshing action between the teeth of the belt and the gear teeth. The toothed belt transmission method has the characteristics of stable transmission, simple maintenance and low cost, and is configured as the pitch system of the wind power generating set. [0003] figure 1 It is a schematic diagram of the toothed belt transmission structure of the wind power generating set in the prior art. figure 1 The blade 101, the hub 102, the pitch bearing (not shown), the drive wheel 103, the tensioner 104 and the toothed belt 105 are shown in the wind power generating set, wherein, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H7/08F03D17/00
CPCF03D17/00F16H7/08F16H2007/0812Y02E10/72
Inventor 邢波
Owner XINJIANG GOLDWIND SCI & TECH
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