Manufacturing method of fan blade and special prestress applying device thereof

A manufacturing method and application device technology, applied in the field of fan blade manufacturing, can solve problems such as the reduction of mechanical properties of uniaxial composite materials, and achieve the effects of improving overall mechanical properties, lightweight and efficient design, and improving static strength and fatigue strength

Active Publication Date: 2013-04-03
GUODIAN UNITED POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings and deficiencies of the prior art, and provide a method for manufacturing fan blades, which can reduce or eliminate the slight bending of uniaxial fiber fabrics during lay

Method used

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  • Manufacturing method of fan blade and special prestress applying device thereof
  • Manufacturing method of fan blade and special prestress applying device thereof
  • Manufacturing method of fan blade and special prestress applying device thereof

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0027] The main steps of the existing manufacturing method for fan blades include lamination and laying of uniaxial fiber fabrics on the blade mold, and then infusion of reinforcing resin. Using the above method, the uniaxial fiber fabrics will be slightly bent during laying, resulting in The mechanical properties of uniaxial composites are reduced.

[0028] A method for manufacturing fan blades according to the present invention improves the above method, mainly in the process of laminating the uniaxial fiber fabric (glass fiber or carbon fiber fabric) by utilizing the prestressed force fixed on the blade mould. The applicator applies prestress to the uniaxial fibe...

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Abstract

The invention discloses a manufacturing method of a fan blade. During the process of laminating and laying a single-axial fiber fabric, prestress is applied to the single-axial fiber fabric through utilizing a prestress applying device fixed on a blade mold, and then reinforcement resin filling is carried out. The invention also discloses the prestress applying device for implementing the method. Two ends of the single-axial fiber fabric are fixed on a tightening rod of the single-axial fiber fabric, then the tightening rod of the single-axial fiber fabric is placed on clamping grooves at two ends of a tightening rod fixing plate again, and the position of the tightening rod of the single-axial fiber fabric is regulated through a prestress regulating mechanism, so that the single-axial fiber fabric generates stress; and through the method and the device, the integral mechanical property and the fatigue property thereof of a single-axial composite material are improved effectively; by adopting the fan blade manufactured by the single-axial composite material with prestress, the static intensity and the fatigue intensity of the blade can be improved effectively, and the light weight efficient design of the blade is realized.

Description

technical field [0001] The invention relates to the field of manufacturing fan blades, in particular to a method for manufacturing fan blades and a special prestressing device thereof. Background technique [0002] When the sun shines on the earth's surface, different parts of the earth's surface are heated differently, resulting in a temperature difference, which causes the convective movement of the atmosphere to form wind, and the energy it carries is wind energy. The wind blows and rotates the fan to drive the generator to rotate to generate electricity, which is called wind power or wind power. Wind energy is a converted form of solar energy and is a renewable natural energy that does not produce any pollution emissions. Compared with solar, biological, geothermal and ocean energy power generation, wind power is a new energy with the most commercial-scale development conditions in terms of technology and economy. Most of the rotors of modern fans are composed of three...

Claims

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Application Information

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IPC IPC(8): B29C70/34
Inventor 杨荣强
Owner GUODIAN UNITED POWER TECH
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