Glass fiber wound reinforced polyurethane resin conical electric pole and production method thereof

Abstract

The invention discloses a glass fiber wound reinforced polyurethane resin conical electric pole. The glass fiber wound reinforced polyurethane resin conical electric pole comprises a root portion and a tip portion; the outer diameter of the root portion is larger than that of the tip portion; the wall thickness of the root portion is larger than that of the tip portion; the glass fiber wound composite material conical electric pole also comprises an equal thickness layer and a thickness gradient layer, wherein the equal thickness layer is located on the outer side and the thickness gradient layer is located on the inner side; the equal thickness layer is formed by alkali-free glass fiber axial fabrics or alkali-free glass fiber multi-directional fabrics through winding; the thickness gradient layer is formed by one of alkali-free glass fiber direct yarns, alkali-free glass fiber axial fabrics and alkali-free glass fiber multi-directional fabrics through winding; the pavement length of the alkali-free glass fiber direct yarns, the alkali-free glass fiber axial fabrics or the alkali-free glass fiber multi-directional fabrics of the thickness gradient layer is retracted from the tip portion to the root portion layer by layer. According to the glass fiber wound reinforced polyurethane resin conical electric pole, the utilization rate of the glass fiber mechanical properties and the production efficiency of a composite material pole tower can be improved and the manufacturing cost of the composite material power transmission pole tower is reduced. The invention also discloses a production method of the glass fiber wound reinforced polyurethane resin conical electric pole.

Description

technical field [0001] The invention relates to a glass fiber winding reinforced polyurethane resin conical electric pole and a preparation method thereof, and belongs to the technical field of manufacturing composite material transmission poles and towers for electric power grids. Background technique [0002] At present, the production processes of FRP tapered poles mainly include hand lay-up, pultrusion and winding. Hand lay-up requires a large number of high-priced fiber fabrics. Because it is difficult to form a uniform tension, the thickness increases and material waste is serious; and the electric poles produced by hand lay-up are rough in appearance and poor in quality stability. As labor costs continue to increase, it is difficult To continue. Pultrusion molding is suitable for the production of equal-diameter poles, but it is difficult to solve the problems of hoop force and pressure instability due to the inability to lay enough hoop fibers, so the structural sta...

AI Technical Summary

Problems solved by technology

Hand lay-up requires a large number of high-priced fiber fabrics. Because it is difficult to form a uniform tension, the thickness increases and material waste is serious; and the electric poles produced by hand lay-up are rough in appearance and poor in quality stability. As labor costs continue to increase, it is difficult to continue

Pultrusion is suitable for the production of equal-diameter poles, but it is difficult to solve the problems of hoop force and pressure instability due to the inability to lay enough hoop fibers, so the structural stability of the product is poor

Using ordinary composite pipe winding machines to produce tapered poles with a taper (such as 1:75) cannot solve the problem of the same wall thickness, but what is actually required is that the wall thickness of the root is greater than that of the tip; the continuous variable Angle-wound tapered poles, even if the wall thickness can be basically the same, but the angle of fiber laying is not ideal, the uniformity of fiber laying is also poor, and the production efficiency is also very low

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