Glass fiber composite rod

Abstract

The utility model provides a glass fiber composite rod, and relates to the technical field of glass fiber rods. The glass fiber composite rod comprises a composite rod body, wherein the composite rod body comprises a galvanized steel pipe, a glass fiber layer and a thermal shrinkage layer; the glass fiber layer comprises a first glass fiber layer, a second glass fiber layer and a glass fiber woven roving layer, the first glass fiber layer is arranged on the outer surface of the galvanized steel pipe and comprises a plurality of alkali-free glass fiber yarns, and the alkali-free glass fiber yarns are sequentially arranged in the circumferential direction of the galvanized steel pipe; the second glass fiber layer comprises at least one alkali-free glass fiber yarn, and the at least one alkali-free glass fiber yarn is wound on the surface of the first glass fiber layer; the glass fiber woven roving layer is arranged on the surface of the second glass fiber layer; the thermal shrinkage layer is arranged on the surface of the glass fiber woven roving layer. The glass fiber composite rod has the advantages of light weight, high mechanical property and corrosion resistance, and can be used as a power rod or a communication rod.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber rod technology, and more specifically, to a glass fiber composite rod. Background Technology

[0002] Fiberglass poles are composite material poles made of fiberglass and its products as reinforcing materials and synthetic resin as the matrix material, through a certain molding process. They are lightweight and are expected to replace traditional cement poles or wooden poles in the fields of communication or power.

[0003] However, the commonly used fiberglass rods still need improvement in terms of shear strength, impact toughness, and creep performance under long-term loads.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a glass fiber composite rod that has a lighter weight and higher mechanical properties, thereby improving the related problems existing in the prior art.

[0006] This utility model can be implemented as follows:

[0007] This utility model provides a glass fiber composite rod, which includes a composite rod body, a galvanized steel pipe, a glass fiber layer and a heat shrinkable layer.

[0008] The fiberglass layer includes a first fiberglass layer, a second fiberglass layer, and a fiberglass woven fabric layer. The first fiberglass layer is disposed on the outer surface of the galvanized steel pipe and includes multiple alkali-free fiberglass yarns arranged sequentially along the circumference of the galvanized steel pipe. The second fiberglass layer includes at least one alkali-free fiberglass yarn, which is wound around the surface of the first fiberglass layer. The fiberglass woven fabric layer is disposed on the surface of the second fiberglass layer.

[0009] A heat-shrinkable layer is applied to the surface of the fiberglass woven fabric layer.

[0010] In an optional embodiment, the length direction of each alkali-free glass fiber yarn in the first glass fiber layer is consistent with the length direction of the galvanized steel pipe.

[0011] In an optional embodiment, the alkali-free glass fiber yarn in the second glass fiber layer is wound in the circumferential direction of the galvanized steel pipe.

[0012] In an optional embodiment, the fiberglass layer further includes an adhesive region for bonding the fiberglass layer to the galvanized steel pipe and the heat-shrinkable layer.

[0013] In an optional embodiment, the outer diameter of the glass fiber composite rod is 148mm to 152mm, and the inner diameter is 138mm to 142mm.

[0014] In an optional embodiment, the galvanized steel pipe has an inner diameter of 138mm to 142mm and a thickness of 0.5mm to 1.5mm.

[0015] In an optional embodiment, the thickness of the glass fiber layer is 5 mm to 7 mm.

[0016] In an optional embodiment, the thickness of the heat-shrinkable layer is 2.5 mm to 3.5 mm.

[0017] In an optional embodiment, the outer diameter of the fiberglass composite rod is 150 mm and the inner diameter is 140 mm; the inner diameter of the galvanized steel pipe is 140 mm and the thickness is 1 mm; the thickness of the fiberglass layer is 6 mm; and the thickness of the heat-shrinkable layer is 3 mm.

[0018] In an optional embodiment, the glass fiber composite rod further includes end caps, which include a first end cap and a second end cap, respectively disposed at both ends of the composite rod body.

[0019] The beneficial effects of this utility model include:

[0020] The fiberglass composite rod provided by this utility model comprises a galvanized steel pipe, a fiberglass layer, and a heat-shrinkable layer arranged from the inside out. The galvanized steel pipe provides basic support and good resistance to deformation for the fiberglass composite rod. The fiberglass layer improves the tensile strength, bending strength, corrosion resistance, and insulation properties of the fiberglass composite rod without adding excessive weight. The heat-shrinkable layer forms a sealed protective layer on the surface of the fiberglass layer, effectively preventing moisture, dust, oil, and other external substances from entering the composite rod and avoiding corrosion and damage to the internal fiberglass layer and galvanized steel pipe. Furthermore, the heat-shrinkable layer secures the fiberglass layer and galvanized steel pipe, improving the overall mechanical properties of the composite rod, such as enhancing its compressive and torsional resistance, reducing relative displacement and friction between layers, and improving the stability and reliability of the composite rod.

[0021] In other words, the fiberglass composite pole provided by this utility model has the effects of being lightweight, high-strength, corrosion-resistant, low-temperature resistant, and insulating, and can replace traditional cement poles or wooden poles as communication poles or power poles. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the glass fiber composite rod provided in this embodiment.

[0024] Icons: 100-Glass fiber composite rod; 10-Composite rod body; 11-Galvanized steel pipe; 12-Glass fiber layer; 13-Heat shrinkable layer; 21-First end cap; 22-Second end cap. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0030] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0031] Please see Figure 1 This embodiment provides a glass fiber composite rod 100, which includes a composite rod body 10, and the composite rod body 10 includes a galvanized steel pipe 11, a glass fiber layer 12 and a heat shrinkable layer 13.

[0032] The glass fiber layer 12 includes a first glass fiber layer, a second glass fiber layer, and a glass fiber woven fabric layer.

[0033] A first glass fiber layer is disposed on the outer surface of the galvanized steel pipe 11. The first glass fiber layer comprises multiple alkali-free glass fiber yarns arranged sequentially along the circumference of the galvanized steel pipe 11. In this first glass fiber layer, the length direction of each alkali-free glass fiber yarn is consistent with the length direction of the galvanized steel pipe 11; that is, in the first glass fiber layer, a single alkali-free glass fiber yarn is arranged along the length direction of the galvanized steel pipe 11. In some optional embodiments, the length direction of each alkali-free glass fiber yarn in the first glass fiber layer is equal to the length of the galvanized steel pipe 11.

[0034] The second glass fiber layer includes at least one alkali-free glass fiber yarn, which is wound around the surface of the first glass fiber layer. The second glass fiber layer serves to initially fix the alkali-free glass fiber yarn in the first glass fiber layer, preventing it from falling off. In some embodiments, the winding direction of the alkali-free glass fiber yarn in the second glass fiber layer is the circumferential direction of the galvanized steel pipe 11 (i.e., the winding direction is parallel to the circumferential direction). In other embodiments, the winding direction of the alkali-free glass fiber yarn in the second glass fiber layer is at an angle to the circumferential direction of the galvanized steel pipe 11. Further, in some optional embodiments, the second glass fiber layer contains multiple alkali-free glass fiber yarns, which are interlaced on the surface of the first glass fiber layer to further improve the stability of the glass fiber layer 12.

[0035] A fiberglass woven fabric layer is disposed on the surface of the second fiberglass layer. The number of fiberglass woven fabric pieces can be one or more, preferably multiple fiberglass woven fabric pieces are disposed in a multi-layered staggered layup method (such as ±45° layup or a combination of 0° / 90° layup), so that the fibers can withstand shear force in different directions and avoid weak directions.

[0036] In this embodiment, the glass fiber layer 12 further includes an adhesive region for bonding the glass fiber layer 12 to the galvanized steel pipe 11 and the heat-shrinkable layer 13. This adhesive region is formed after the resin adhesive has cured. The resin material (such as unsaturated polyester resin) in the resin adhesive can bond the glass fiber and transfer stress, thus helping to improve the overall performance of the glass fiber composite rod 100.

[0037] In this embodiment, the heat-shrinkable layer 13 is disposed on the entire surface of the glass fiber layer 12. This heat-shrinkable layer 13 is formed by heating and shrinking a heat-shrinkable composite sheet. Heating causes the heat-shrinkable composite sheet to completely shrink and wrap around the surface of the glass fiber layer 12. The heat-shrinkable composite sheet can be a common mesh-backed heat-shrinkable composite sheet or an adhesive-backed heat-shrinkable composite sheet.

[0038] Continuing from the above, in the fiberglass composite pole 100 provided in this embodiment, the galvanized steel pipe 11 has high strength and rigidity, providing basic support for the fiberglass composite pole 100, enabling it to withstand greater external forces. Furthermore, the galvanized steel pipe 11 has good resistance to deformation, allowing the fiberglass composite pole 100 to maintain a stable shape and structure when subjected to bending, tension, torsion, and other external forces, preventing excessive deformation or breakage of the pole and enhancing structural stability. In addition, the galvanized layer forms a dense protective film on the surface of the steel pipe, effectively blocking contact between air, moisture, and other corrosive substances, greatly improving the steel pipe's rust resistance and extending the service life of the fiberglass composite pole 100 in harsh outdoor environments.

[0039] The glass fiber layer 12 possesses high strength and high modulus, significantly improving the tensile strength, flexural strength, and other mechanical properties of the composite rod, thus enhancing its load-bearing capacity without adding excessive weight. Furthermore, glass fiber exhibits flexibility, allowing the composite rod to possess both high strength and elasticity, as well as impact resistance. When subjected to external impacts or vibrations, it absorbs and buffers energy through deformation, preventing brittle fracture. In addition, glass fiber itself is chemically stable, exhibiting excellent resistance to corrosion from acids, alkalis, salts, and other chemicals, protecting the composite rod from external corrosive media. In this embodiment, glass fiber, as an excellent electrical insulator, also endows the glass fiber composite rod 100 with good insulation properties, making it suitable for use as an insulating rod in power engineering and a utility pole in the communications field, preventing current conduction and ensuring safe operation.

[0040] After being heated and shrunk, the heat-shrinkable layer 13 tightly wraps around the surface of the fiberglass layer 12, forming a sealed protective layer. This effectively prevents external substances such as moisture, dust, and oil from entering the interior of the composite rod, avoiding corrosion and damage to the internal fiberglass layer 12 and galvanized steel pipe 11. Furthermore, the heat-shrinkable layer 13 also serves to secure the fiberglass layer 12 and galvanized steel pipe 11, improving the overall mechanical properties of the composite rod, such as enhancing its compressive and torsional resistance, reducing relative displacement and friction between layers, and improving the stability and reliability of the composite rod.

[0041] Furthermore, in this embodiment, the outer diameter of the glass fiber composite rod 100 can be 148mm to 152mm, such as 148mm, 149mm, 150mm, 151mm, or 152mm, or other values ​​within the range of 148mm to 152mm. The inner diameter of the glass fiber composite rod 100 can be 138mm to 142mm, such as 138mm, 139mm, 140mm, 141mm, or 142mm, or other values ​​within the range of 138mm to 142mm.

[0042] In some alternative embodiments, the inner diameter of the galvanized steel pipe 11 can be 138mm to 142mm, such as 138mm, 139mm, 140mm, 141mm, or 142mm, or other values ​​within the range of 138mm to 142mm. The thickness of the galvanized steel pipe 11 can be 0.5mm to 1.5mm, such as 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, or 1.5mm, or other values ​​within the range of 0.5mm to 1.5mm.

[0043] The galvanized steel pipe 11 with the above dimensions has a larger moment of inertia and stability, which can better resist bending deformation, improve the bending resistance of the glass fiber composite rod 100, reduce the possibility of torsional deformation, and make it less prone to instability when subjected to compression or lateral force.

[0044] In some alternative embodiments, the thickness of the glass fiber layer 12 can be 5mm to 7mm, such as 5mm, 5.5mm, 6mm, 6.5mm or 7mm, or other values ​​within the range of 5mm to 7mm.

[0045] The glass fiber layer 12 of the aforementioned thickness effectively improves the specific strength and specific modulus of the glass fiber composite rod 100, significantly enhancing its strength and stiffness without substantially increasing its weight, thus strengthening its fatigue resistance. Furthermore, it improves the shear strength of the glass fiber composite rod 100, enabling it to better resist shear forces, especially when the steel pipe and glass fiber layer 12 are well bonded, effectively transferring shear stress. In addition, the glass fiber layer 12 of the aforementioned thickness also provides the glass fiber composite rod 100 with excellent insulation and weather resistance.

[0046] In some alternative embodiments, the thickness of the heat-shrinkable layer 13 can be 2.5mm to 3.5mm, such as 2.5mm, 2.8mm, 3mm, 3.2mm or 3.5mm, or other values ​​within the range of 2.5mm to 3.5mm.

[0047] The heat-shrinkable layer 13 with the above-mentioned thickness can better seal the internal structure of the glass fiber composite rod 100, prevent moisture, dust and corrosive media from entering, protect the steel pipe and glass fiber layer 12 from the influence of the external environment, and extend the service life of the glass fiber composite rod 100.

[0048] In some typical embodiments, the outer diameter of the fiberglass composite rod 100 is 150 mm and the inner diameter is 140 mm; the inner diameter of the galvanized steel pipe 11 is 140 mm and the thickness is 1 mm; the thickness of the fiberglass layer 12 is 6 mm; and the thickness of the heat-shrinkable layer 13 is 3 mm.

[0049] The fiberglass composite rod 100 with the above dimensions can combine excellent mechanical properties, corrosion resistance and insulation properties.

[0050] Furthermore, the glass fiber composite rod 100 provided in this embodiment also includes end caps, which include a first end cap 21 and a second end cap 22, respectively disposed at both ends of the composite rod body 10.

[0051] The end caps serve two purposes: firstly, they provide mechanical protection to prevent damage to the ends of the fiberglass composite rod 100; secondly, they effectively prevent moisture and humidity from entering the interior of the fiberglass composite rod 100 and isolate the ends of the fiberglass composite rod 100 from external corrosive media, thus preventing corrosion of the rod ends.

[0052] In summary, the fiberglass composite pole 100 provided by this utility model has the advantages of being lightweight, high-strength, corrosion-resistant, low-temperature resistant, and insulating. It can replace traditional cement poles or wooden poles as communication poles or power poles.

[0053] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A glass fiber composite rod, characterized in that, The fiberglass composite rod includes a composite rod body, which includes a galvanized steel pipe, a fiberglass layer, and a heat-shrinkable layer. The glass fiber layer comprises a first glass fiber layer, a second glass fiber layer, and a glass fiber woven fabric layer. The first glass fiber layer is disposed on the outer surface of the galvanized steel pipe and includes multiple alkali-free glass fiber yarns arranged sequentially along the circumference of the galvanized steel pipe. The second glass fiber layer includes at least one alkali-free glass fiber yarn wound around the surface of the first glass fiber layer. The glass fiber woven fabric layer is disposed on the surface of the second glass fiber layer. The heat-shrinkable layer is disposed on the surface of the glass fiber woven fabric layer.

2. The glass fiber composite rod according to claim 1, characterized in that, In the first glass fiber layer, the length direction of each alkali-free glass fiber yarn is consistent with the length direction of the galvanized steel pipe.

3. The glass fiber composite rod according to claim 1, characterized in that, In the second glass fiber layer, the alkali-free glass fiber yarn is wound in the circumferential direction of the galvanized steel pipe.

4. The glass fiber composite rod according to claim 1, characterized in that, The fiberglass layer also includes an adhesive region for bonding the fiberglass layer to the galvanized steel pipe and the heat-shrinkable layer.

5. The glass fiber composite rod according to any one of claims 1 to 4, characterized in that, The outer diameter of the glass fiber composite rod is 148mm to 152mm, and the inner diameter is 138mm to 142mm.

6. The glass fiber composite rod according to claim 5, characterized in that, The galvanized steel pipe has an inner diameter of 138mm to 142mm and a thickness of 0.5mm to 1.5mm.

7. The glass fiber composite rod according to claim 5, characterized in that, The thickness of the glass fiber layer is 5mm to 7mm.

8. The glass fiber composite rod according to claim 5, characterized in that, The thickness of the heat-shrinkable layer is 2.5mm to 3.5mm.

9. The glass fiber composite rod according to claim 5, characterized in that, The outer diameter of the fiberglass composite rod is 150mm and the inner diameter is 140mm; the inner diameter of the galvanized steel pipe is 140mm and the thickness is 1mm; the thickness of the fiberglass layer is 6mm; and the thickness of the heat-shrinkable layer is 3mm.

10. The glass fiber composite rod according to claim 1, characterized in that, The fiberglass composite rod also includes end caps, which include a first end cap and a second end cap, respectively disposed at both ends of the composite rod body.

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