Manufacturing method of fan blade and special prestress applying device thereof

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...

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 laying, thereby solving the problem of uniaxial To solve the problem of reducing the mechanical properties of composite materials, effectively improve the overall mechanical properties of uniaxial composite materials, and effectively improve their fatigue properties

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