A utility pole

Abstract

An embodiment of the present invention provides an electric pole, comprising: an inner layer comprising: at least two profiles, the at least two profiles being sequentially connected to form an inner layer of a ring structure; and an outer layer covering the outer surfaces of all of the profiles. The electric pole of this embodiment, because the at least two profiles in its inner layer are sequentially connected to form a ring structure, effectively reduces the amount of deflection while ensuring mechanical strength. This effectively solves the technical problem of the prior art electric poles, which have limited their application scenarios due to their low elastic modulus and large deflection, making them unusable in areas with tight line corridors. At the same time, the weight of the product can be reduced to a certain extent. Pultruded profiles have stable performance and high production efficiency, which helps reduce the cost of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission, in particular to an electric pole. Background Art

[0002] Electric poles are bridges of electricity, allowing electricity to be transported to various places. Common electric poles we see are wooden poles and cement poles. They are of different heights, standing in plains and mountains, and are all around people. There are many types of electric poles, the most common ones are: concrete poles, which are poles made of concrete and steel bars or steel wires. Iron poles: poles cast with pig iron, concrete poles are of two types: prestressed and non-prestressed. The cross-sections of electric poles include square, octagonal, I-shaped, circular or other special-shaped sections. The most commonly used are circular sections and square sections. The length of electric poles is generally 4.5 to 15 meters. There are two types of circular poles: tapered poles and equal-diameter poles. The tip diameter of the tapered pole is generally 100 to 230 mm, and the taper is 1:75; the diameter of the equal-diameter pole is 300 to 550 mm; the wall thickness of both is 30 to 60 mm.

[0003] 10kV composite poles for distribution networks offer advantages such as light weight, high strength, corrosion resistance, and superior structural design. With a density 1 / 4 to 1 / 3 that of steel structures, and a single composite pole weighing 180 to 350kg, they effectively reduce the difficulty of line construction and improve line reliability in extreme weather conditions such as typhoons. In recent years, they have garnered widespread attention both domestically and internationally. Previously, the China Electric Power Research Institute conducted field research on the use of composite poles in my country. The findings indicate that composite poles are primarily used in mountainous areas, coastal areas (islands), and other areas with inconvenient transportation and frequent typhoons. While overall performance is good, their use and operational life are relatively limited.

[0004] The existing electric poles have the technical problem that their low elastic modulus and large deflection deformation limit their application scenarios, making them unusable in some areas with tight line corridors. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an electric pole, which is used to solve the technical problem that the electric poles in the prior art have low elastic modulus and large deflection deformation characteristics, which limit their application scenarios and make them unusable in some areas with tight line corridors.

[0006] To solve the above technical problems, the embodiments of the present invention adopt the following technical solutions:

[0007] This embodiment provides an electric pole, comprising:

[0008] An inner layer, the inner layer comprising:

[0009] At least two profiles, wherein the at least two profiles are sequentially connected to form an inner layer of the annular structure;

[0010] The outer layer covers the outer surfaces of all the profiles.

[0011] Furthermore, the pole further comprises:

[0012] An inner ring is located in the inner layer, and an outer surface of the inner ring is in contact with the inner surface of the profile.

[0013] Furthermore, the number of the inner rings is at least two, and at least two of the inner rings are arranged at equal intervals in the inner layer.

[0014] Furthermore, raised reinforcing ribs are provided on the inner surface of each of the profiles.

[0015] Furthermore, the outer surface of the inner ring is provided with at least two grooves, and the number of the grooves is greater than or equal to the number of the reinforcing ribs, and the reinforcing ribs are embedded in the grooves.

[0016] Furthermore, the pole further comprises:

[0017] The number of the grooves is consistent with that of the reinforcing ribs, and the positions of the two are consistent.

[0018] Furthermore, the pole further comprises:

[0019] An umbrella skirt is sleeved on the winding layer, a first end of the umbrella skirt is connected to the first mounting portion, and a second end of the umbrella skirt is connected to the second mounting portion.

[0020] Furthermore, both side edges of the profile are tapered, adjacent profiles are connected by bonding, and the edges of adjacent profiles form accommodating grooves.

[0021] Furthermore, the outer layer is a fiber-reinforced resin material wound on the outer surface of the profile.

[0022] Furthermore, the outer layer comprises:

[0023] a first layer, the first layer being circumferentially wound on the profile and embedded in the receiving groove;

[0024] A second layer is circumferentially wrapped around the first layer.

[0025] Furthermore, the material of the profile is fiber reinforced resin.

[0026] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0027] An embodiment of the present invention provides an electric pole, comprising: an inner layer comprising: at least two profiles, the at least two profiles being sequentially connected to form an inner layer of a ring structure; and an outer layer covering the outer surfaces of all of the profiles. The electric pole of this embodiment, because the at least two profiles in its inner layer are sequentially connected to form a ring structure, effectively reduces the amount of deflection while ensuring mechanical strength. This effectively solves the technical problem of the prior art electric poles, which have limited their application scenarios due to their low elastic modulus and large deflection, making them unusable in areas with tight line corridors. At the same time, the weight of the product can be reduced to a certain extent. Pultruded profiles have stable performance and high production efficiency, which helps reduce the cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of a pole provided by an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the cut structure of a pole provided by an embodiment of the present invention;

[0031] Figure 3 This is a schematic structural diagram of a profile of an electric pole provided by an embodiment of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the inner ring of a pole provided by an embodiment of the present invention.

[0033] in:

[0034] 1. Outer layer; 2. Inner layer; 21. Profile; 211. Reinforcement rib; 3. Inner ring; 31. Groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integral connections. They can also refer to mechanical connections or electrical connections. They can also refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0039] See Figure 1 , Figure 1 A schematic diagram of the structure of a pole for the lateral direction of the radius provided by an embodiment of the present invention.

[0040] like Figure 1-4 As shown, this embodiment provides a pole, which includes:

[0041] Inner layer 2, the inner layer 2 comprises:

[0042] At least two profiles 21, wherein the at least two profiles 21 are sequentially connected to form an inner layer 2 of an annular structure;

[0043] The outer layer 1 covers the outer surfaces of all the profiles 21 .

[0044] The material of the profile 21 is fiber reinforced resin.

[0045] The inner layer 2 is the main load-bearing component; the pultruded profile 21 is a fan-shaped sheet structure with a thickness of 3mm to 15mm;

[0046] The profiles 21 may be 2, 3 or 4, etc., which are connected in sequence to form a tubular inner layer 2.

[0047] The pole of this embodiment, with at least two profiles 21 in its inner layer 2 connected sequentially to form a ring-shaped structure, effectively reduces deflection while maintaining mechanical strength. This effectively addresses the technical problem of existing poles, which have limited their application due to their low elastic modulus and large deflection, resulting in their inability to be used in areas with congested power corridors. Furthermore, the pole can be reduced in weight to a certain extent. The stable performance and high production efficiency of the pultruded profiles 21 contribute to lower product costs.

[0048] In this embodiment, since the inner layer 2 alone may have insufficient mechanical strength, the pole further includes:

[0049] The inner ring 3 is located in the inner layer 2 , and the outer surface of the inner ring 3 is in contact with the inner surface of the profile 21 .

[0050] The inner ring 3 can act on the profile 21, so that the profile 21 can have higher mechanical strength, and is used to fix the profile 21. The inner ring 3 is made of resin material through a molding process, which can further enhance the mechanical strength of the pole.

[0051] There are at least two inner rings 3 , and at least two inner rings 3 are arranged at equal intervals in the inner layer 2 .

[0052] The at least two inner rings 3 may also be distributed inside the inner layer 2 according to a specific rule (such as densely packed at the base or dispersed at the top) to maximize the bending resistance of the pole;

[0053] Arranging at least two inner rings 3 at equal intervals in the inner layer 2 can ensure uniform support for the inner layer 2, so that the pole can have better mechanical strength and bending resistance.

[0054] In this embodiment, a raised reinforcing rib 211 is provided on the inner surface of each profile 21 .

[0055] The reinforcing ribs 211 can further enhance the mechanical strength of the inner layer 2 so as to be adaptable to more environments.

[0056] In this embodiment, at least two grooves 31 are provided on the outer surface of the inner ring 3 , and the number of the grooves 31 is greater than or equal to the number of the reinforcing ribs 211 , and the reinforcing ribs 211 are embedded in the grooves 31 .

[0057] The reinforcing rib 211 is embedded in the groove 31 to fix and limit the inner ring 3 so that the inner ring 3 can better play a supporting role.

[0058] The number of the grooves 31 may be greater than or equal to the number of the reinforcing ribs 211 , so that the inner ring 3 can better fit on the inner surface of the profile 21 .

[0059] The number of the grooves 31 is the same as that of the reinforcing ribs 211 , and their positions are consistent.

[0060] The grooves 31 correspond to the reinforcing ribs 211 in a one-to-one manner, reducing the gap between the inner ring 3 and the profile 21 so that the inner ring 3 can play a better supporting role.

[0061] In this embodiment, both side edges of the profile 21 are tapered, adjacent profiles 21 are connected by bonding, and the edges of adjacent profiles 21 form accommodating grooves.

[0062] The outer layer 1 is a fiber-reinforced resin wrapped around the outer surface of the profile 21 and embedded in the receiving groove;

[0063] The resin of the outer layer 1 flows into the receiving groove, and the resin flows into and fills the receiving groove to play a bonding role.

[0064] Specifically, the outer layer 1 comprises:

[0065] A first layer, the first layer is circumferentially wound on the profile 21 and embedded in the accommodating groove;

[0066] A second layer is circumferentially wrapped around the first layer.

[0067] The profile 21 is wound in an annular manner for the first layer and then in a circumferential manner for the second layer. Since the expansion coefficients of the two layers are different during winding, the interface problem is solved and a buffering effect is achieved.

[0068] The outer layer 1 is arranged on the inner layer 2 assembled from the profile 21 to prevent the inner layer 2 from being corroded by the external environment and ensure its service life. It is made of fiber-reinforced resin material and is formed by a winding process with a thickness of 2mm to 5mm.

[0069] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pole, characterized in that: The electric pole comprises: An inner layer, the inner layer comprising: At least two profiles, wherein the at least two profiles are sequentially connected to form an inner layer of the annular structure; An outer layer, the outer layer covering all outer surfaces of the profiles; an inner ring, the inner ring being located in the inner layer, and the outer surface of the inner ring being in contact with the inner surface of the profile; The inner surface of each of the profiles is provided with raised reinforcing ribs; The outer surface of the inner ring is provided with at least two grooves, and the number of the grooves is greater than or equal to the number of the reinforcing ribs, and the reinforcing ribs are embedded in the grooves; The number of the grooves is the same as that of the reinforcing ribs, and the positions of the two are consistent; The edges of both sides of the profile are tapered, adjacent profiles are connected by bonding, and the edges of adjacent profiles form accommodating grooves; The outer layer is a fiber-reinforced resin wrapped around the outer surface of the profile and embedded in the receiving groove; The resin of the outer layer flows into and fills the containing groove, playing a sticking role.

2. The electric pole according to claim 1, characterized in that: The number of the inner rings is at least two, and at least two inner rings are arranged in the inner layer at equal intervals.

3. The electric pole according to claim 1, characterized in that The outer layer comprises: a first layer, the first layer being circumferentially wound on the profile and embedded in the receiving groove; A second layer is circumferentially wrapped around the first layer.

4. The electric pole according to claim 1, characterized in that The material of the profile is fiber reinforced resin.

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