CN117927080A - Insulated telegraph pole and power transmission system - Google Patents

Abstract

The invention provides an insulated telegraph pole and an electric power transmission system, which belong to the field of electric related buildings, wherein the insulated telegraph pole comprises a supporting sheet, a composite layer and an outer protective layer which are sequentially arranged from inside to outside, the supporting sheet is in a strip shape and uniformly arranged around a first axis, the composite layer and the outer protective layer are both cylindrical, the composite layer and the outer protective layer are coaxial with the first axis, the composite layer comprises a first fiber bundle and a first resin, the first fiber bundle spirally surrounds the first axis, the central axis of the first fiber bundle overlaps the first axis, the first resin is coated on the periphery of the first fiber bundle, and the first fiber bundle is provided with a pretightening force which contracts along the axial direction of the first fiber bundle. Compared with the prior art, the invention provides the technical problem that the radial rigidity of the existing insulated telegraph pole is insufficient by pulling the first fiber bundles to improve the integral structural strength of the telegraph pole, so that the potential safety hazard that the wires installed on the existing composite telegraph pole are easy to be short-circuited due to shaking is reduced.

Description

Insulated telegraph pole and power transmission system

Technical Field

The invention belongs to the field of electric related buildings, and particularly relates to an insulated telegraph pole, and an electric power transmission system.

Background

At present, in the construction engineering of electric power, telecommunication and other circuits, heavy cement poles and steel poles are commonly adopted, and the heavy weight of the poles is high, and particularly in the construction of complicated terrains such as mountain areas, hills and the like, the complicated topography leads to that a plurality of poles cannot be transported to a set position even if a manual two-wheeled vehicle is used, the transportation is very difficult, and the labor intensity of electric workers is very high. In addition, the cement line pole has small strength, is easy to break in transportation, and can cause unnecessary loss due to labor and civil injury with little care; in the production process of the cement pole, steam with the pressure of at least 3 times of atmospheric pressure is needed for heating for 3-4 hours to form the cement pole, the energy consumption is serious, and the heating fire coal can also discharge more pollution.

To improve the drawbacks of conventional concrete poles, existing manufacturers generally use filament winding technology to produce fiberglass-reinforced plastic poles. The filament winding forming is a method of impregnating a continuous fiber roving or cloth tape with a resin solution under controlled fiber tension and a predetermined line shape, continuously winding the impregnated fiber roving or cloth tape around a core mold or liner corresponding to the size of the inner cavity of the product, and curing the impregnated fiber roving or cloth tape at room temperature or under heating to form the product of a certain shape. However, the glass fiber utility pole has the following disadvantages: the utility pole made of glass fiber materials is insufficient in rigidity and overlarge in deflection, and the pole body is easy to shake when bearing radial loads, so that the hidden danger of short circuit exists in the electric wire connected to the top of the utility pole.

Disclosure of Invention

The invention aims to provide an insulated telegraph pole, which aims to solve the technical problem that the radial rigidity of the existing insulated telegraph pole is insufficient.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an insulating telegraph pole, including from inside to outside sets gradually supporting plate, composite bed and outer protective layer, the supporting plate takes the form of rectangular form to evenly arrange around first axis, the thickness direction and the length direction of supporting plate all are perpendicular with first axis, composite bed with outer protective layer is the barrel, and composite bed with outer protective layer all with first axis coaxial; the composite layer comprises first fiber bundles which are spirally distributed around a first axis, the peripheries of the first fiber bundles are abutted to the outer surface of the supporting sheet, the first fiber bundles are soaked in first resin, and the first fiber bundles are arranged to have pretightening force shrinking along the axial direction of the first fiber bundles.

Further, the insulated wire pole further comprises a supporting layer coaxially arranged on the inner side of the composite layer, the supporting layer is a cylinder, each supporting piece is arranged on the periphery of the supporting layer, the inner surface of each supporting piece is abutted to the periphery of the supporting layer, and the outer surface of each supporting piece is abutted to the periphery of the first fiber bundle.

Further, each supporting sheet is uniformly distributed on the periphery of the supporting layer at radial intervals by taking the first axis as a center, and the supporting sheets are in head-to-tail lap joint.

Further, the supporting layer comprises second fiber bundles which are distributed spirally around the first axis, the second fiber bundles are soaked in second resin, the rotation directions of the first fiber bundles are opposite, and the second resin is light-cured resin.

Further, the composite layer further comprises a third fiber bundle, the third fiber bundle surrounds the first axis in a spiral mode, the central axis of the third fiber bundle is overlapped with the first axis, the rotation direction of the third fiber bundle is opposite to that of the first fiber bundle, and the third fiber bundle is soaked in the first resin.

Further, the outer protection layer is coated with polyurethane finish paint coated on the first resin or the periphery, and the thickness of the paint layer of the polyurethane finish paint is not less than 0.3mm.

Further, a first clamping groove and a second clamping groove are formed in the outer surface of the supporting sheet, the first fiber bundles are located in the first clamping groove, and the third fiber bundles are located in the second clamping groove.

Further, the outer periphery of the first fiber bundle is formed with a plurality of first protrusions along the self axis, the outer periphery of the third fiber bundle is formed with a plurality of second protrusions along the self axis, and the outer surface of the supporting sheet is formed with a connecting protrusion, wherein the connecting protrusion is located between two adjacent first protrusions or between two adjacent second protrusions.

Further, the insulating telegraph pole further comprises a strain assembly, the strain assembly comprises a wire, a connecting film, a resistor disc and a covering film, the strain assembly is arranged between the supporting sheet and the supporting layer, the connecting film, the resistor disc and the covering film are sequentially laminated along the direction close to the first axis, the connecting film is attached to the inner surface of the supporting sheet, the covering film is attached to the outer surface of the supporting layer, the resistor disc is located between the connecting film and the covering film, one end of the wire is connected with the resistor disc, and the other end of the wire stretches into the inner side of the supporting layer.

Compared with the prior art, after the first fiber bundles in the insulated wire pole are formed by heat curing of the first resin, the insulated wire pole can be pulled along the first axis by utilizing the pretightening force of the first fiber bundles, so that the radial rigidity of the insulated wire pole is enhanced, and the technical problem that the existing insulated wire pole is easy to bend or swing under the condition of large radial load is solved; meanwhile, the spiral first fiber bundles also have radial contraction force, so that the contraction pretightening force is generated along the axial direction and the radial direction of the insulated wire pole, and the integral structural strength of the insulated wire pole is enhanced.

Another object of the invention is to propose a power transmission system comprising an insulated wire pole as described above.

The power transmission system of the present invention has all the advantages of the insulated utility pole described above, as compared to the prior art, and is not described here in any way.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:

FIG. 1 is a schematic diagram of the connection relationship between a composite layer and a supporting layer in an insulated wire pole provided by the invention;

FIG. 2 is an enlarged view of the area indicated at A in FIG. 1;

FIG. 3 is a schematic view of the structure of the strain assembly in the insulated wire pole of the present invention;

FIG. 4 is a schematic diagram showing the connection relationship of a plurality of support plates according to the present invention;

Fig. 5 is a schematic diagram showing connection between the support sheet and the first fiber bundle and the third fiber bundle according to the present invention.

In the figure:

1. A composite layer; 11. a first fiber bundle; 111. a first protrusion; 12. a third fiber bundle; 121. a second protrusion;

2. a support layer; 21. a support sheet; 211. a first clamping groove; 212. a second clamping groove; 22. a connection protrusion;

3. A strain assembly; 31. a resistor sheet; 32. a wire; 33. a connection film; 34. and (5) covering the film.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", and the like are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in combination with specific cases.

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 to 5, an insulated wire pole according to the present invention will be described. The insulated wire pole comprises a supporting sheet 21, a composite layer 1 and an outer protective layer which are sequentially arranged from inside to outside, wherein the supporting sheet 21 is in a strip shape and uniformly arranged around a first axis, the thickness direction and the length direction of the supporting sheet 21 are perpendicular to the first axis, the composite layer 1 and the outer protective layer are both cylinders, and the composite layer 1 and the outer protective layer are coaxial with the first axis; the composite layer 1 includes first fiber bundles 11, the first fiber bundles 11 are spirally distributed around a first axis, the outer periphery of the first fiber bundles 11 is abutted against the outer surface of the supporting sheet 21, the outer periphery of the first fiber bundles 11 is covered with a first resin, and the first fiber bundles 11 are arranged to have a pretightening force that contracts in the axial direction thereof.

Optionally, in a specific implementation, the first fiber bundle 11 in this embodiment is tightly adhered to the outer circumference of the telegraph pole mold in a spiral shape under the action of the pretensioning force, when the composite layer 1 has a certain thickness (which is one fifth to one fourth of the thickness of the composite layer itself), the composite layer 1 can be cured from the inside in a thermosetting manner, so that the inside of the composite layer 1 is cured and formed first, in this case, the inside of the composite layer 1 is hardened, the outside still maintains a better wettability, so that the subsequent coating of the first resin and the continuous winding of the first fiber bundle 11 are convenient, and the technical problem of insufficient connection strength between the fiber bundles of different layers is prevented. Meanwhile, the material of the first fiber bundle 11 may be aramid, carbon fiber or glass fiber, wherein the glass fiber is preferably selected in the characteristics of high weather resistance and high cost performance.

Compared with the prior art, after the first fiber bundle 11 in the embodiment is formed by thermosetting the first resin, the insulating telegraph pole can be pulled along the first axis by utilizing the pretightening force of the first fiber bundle to strengthen the radial rigidity of the insulating telegraph pole, so that the technical problem that the existing insulating telegraph pole is easy to bend or swing under the condition of large radial load is solved; meanwhile, the first fiber bundle 11 in the spiral shape also has a contraction force in the radial direction in this embodiment, so that a pre-tightening force of contraction is generated along the axial direction and the radial direction of the insulated wire pole, which is advantageous for enhancing the overall structural strength of the insulated wire pole. In addition, the supporting sheet 21 in the present embodiment can generate a shrinkage force in the radial direction under the action of the first fiber bundles 11, and enhance the bending resistance and torsion resistance of the insulated wire after molding. Besides the above-mentioned benefits, since the first fiber bundles 11 have two retraction tendencies of axial retraction and radial retraction, the connection between the first fiber bundles 11 in the composite layer 1 of this embodiment is more compact, and gaps and cavitation are not easy to generate between adjacent first fiber bundles 11, which is beneficial to improving the technical problem that the structural strength of the existing glass fiber pole is affected by too many bubbles inside.

Based on the above example, in order to facilitate the curing and molding of the composite layer 1, a more preferable embodiment is provided, specifically, as shown in fig. 1 and 2, in this example, the insulated wire pole further includes a support layer 2 coaxially disposed inside the composite layer 1, the support layer 2 is a cylindrical body, each support piece 21 is disposed on the outer periphery of the support layer 2, the inner surface of the support piece 21 is in contact with the outer periphery of the support layer 2, and the outer surface is in contact with the outer periphery of the first fiber bundle 11. Under the action of the first fiber bundles 11, the supporting sheet 21 in the embodiment can generate radial pressure on the supporting layer 2, and the bending resistance and the torsion resistance of the insulating telegraph pole after being molded are improved. In addition, in the integrally formed insulated wire pole of the embodiment, the supporting sheet 21 is fixedly adhered to the outer surface of the supporting layer 2, and the composite layer 1 is fixedly adhered to the outer periphery of the supporting layer 2, so that the supporting layer 2 can also play a supporting role for the axial shrinkage of the first fiber bundles 11, and further the structural strength of the insulated wire pole of the invention is improved.

Based on the above embodiment, in practice, the support pieces 21 are uniformly distributed on the outer periphery of the support layer 2 at radial intervals centering on the first axis, and the support pieces 21 overlap end to end. In this way, each support piece 21 can be combined into an annular reinforcing hoop, which is more beneficial for enhancing the structural strength of the insulated wire pole.

As an alternative embodiment, when the first fiber bundle 11 is directly wrapped on the telegraph pole forming mold, the supporting layer 2 may be arranged on the outer periphery of the forming mold in advance, so that the first fiber bundle 11 is wrapped on the outer periphery of the supporting layer 2 under the action of the tensile force, thereby being beneficial to preventing the first fiber bundle 11 from being tightly attached to the outer periphery of the telegraph pole mold under the action of the tensile force, and improving the fusion effect between the first resin and the first fiber bundle 11.

In some embodiments, the support layer 2 comprises second fiber bundles, which are spirally distributed around the first axis, the outer circumference of which is coated with a second resin, which is a photo-curable resin, in the opposite direction of rotation of the first fiber bundles 11. In this embodiment, the second fiber bundles can cooperate with the first fiber bundles 11 to prevent the resultant force generated at each of the first fiber bundles 11 from adversely affecting the stress distribution within the utility pole. Based on the same design concept, a third fiber bundle 12 is further arranged in the composite layer 1, the third fiber bundle 12 surrounds the first axis in a spiral manner, the central axis of the third fiber bundle 12 overlaps with the first axis, and the rotation direction of the third fiber bundle 12 is opposite to that of the first fiber bundle 11. Preferably, in practice, the third fiber bundles 12 and the first fiber bundles 11 are alternately stacked, and the first resin and the third resin are alternately coated, so that the arrangement of the stress inside the insulated wire pole is more reasonable.

Preferably, in order to improve the weather resistance of the insulated wire pole, when the outermost side of the composite layer 1 is the first resin, the outer protective layer is polyurethane finish coated outside the first resin, and similarly, when the outermost side of the composite layer 1 is the third resin, the thickness of the polyurethane finish on the outer periphery of the outer protective layer or the third resin is not less than 0.3mm. In this embodiment, the polyurethane finish paint can form a protective effect on the periphery of the composite layer 1, and prevent foreign matters from directly colliding with the composite layer 1.

In some embodiments, the outer surface of the supporting sheet 21 is provided with a first clamping groove 211 and a second clamping groove 212, the first fiber bundle 11 is located in the first clamping groove 211, and the third fiber bundle 12 is located in the second clamping groove 212. According to the embodiment, through the clamping fit of the clamping grooves and the fiber bundles, the first fiber bundles 11 and the third fiber bundles 12 can be prevented from sliding relative to the supporting sheet 21 in the stretching and winding process, and more stable supporting force is provided for the gathering capacity of the supporting sheet 21. Preferably, the depth of the first clamping groove 211 is greater than the depth of the second clamping groove 212, so that the distribution of the first fiber bundles 11 and the third fiber bundles 12 is more reasonable.

In some embodiments, referring to fig. 5, the outer circumference of the first fiber bundle 11 is formed with a plurality of first protrusions 111 along its own axis, the outer circumference of the third fiber bundle 12 is formed with a plurality of second protrusions 121 along its own axis, and the connection protrusion 22 is located between two adjacent first protrusions 111 or between two adjacent second protrusions 121. In the present embodiment, the arrangement of the first protrusions 111 can enhance the frictional resistance between the first fiber bundles 11 and the first resin, prevent the first fiber bundles 11 from falling off from the first resin in the axial shrinkage process, and simultaneously, the arrangement of the first protrusions 111 and the second protrusions 121 can also increase the frictional resistance between different glass fiber bundles, thereby enhancing the tensile strength of the insulated wire pole; moreover, the first protrusion 111 and the second protrusion 121 can also have better sizing effect, so that the first fiber bundle 11 and the third fiber bundle 12 wrapped outside the supporting layer 2 are fully soaked by the first resin, and the first fiber bundle 11 and the third fiber bundle 12 are prevented from generating gaps due to the clamping fit with the supporting sheet 21.

Considering that the existing telegraph pole is generally larger in bottom diameter, thinner in pole wall, smaller in top diameter and thicker in pole wall, and accordingly, in this case, if the tension of the fiber bundles is not adaptively adjusted, the internal stress of the telegraph pole is concentrated to the pole top, and potential safety hazards are caused to the structural strength of the insulated telegraph pole, aiming at the problems, the inventor embeds a plurality of strain assemblies 3 in the production process of the insulated telegraph pole, so that the tension of the fiber bundles can be adjusted in real time according to the stress conditions of different parts of the telegraph pole.

Based on the above design concept, a more preferred embodiment is provided, in detail, the strain assembly 3 in this embodiment includes a conductive wire 32, a connection film 33, a resistor sheet 31 and a cover film 34, where the strain assembly 3 is disposed between the support sheet 21 and the support layer 2, the connection film 33, the resistor sheet 31 and the cover film 34 are sequentially stacked along a direction close to the first axis, where the connection film 33 is attached to an inner surface of the support sheet 21, the cover film 34 is attached to an outer surface of the support layer 2, the resistor sheet 31 is located between the connection film 33 and the cover film 34, one end of the conductive wire 32 is connected with the resistor sheet 31, and the other end of the conductive wire extends into an inner side of the support layer 2. The material of the connection film 33 may be a hot-melt plastic or an epoxy glue, the resistor sheet 31 is adhered to the inner wall of the supporting sheet 21 through the connection film 33, and the material of the cover film 34 may be a hard plastic, a subcritical plate or a glass fiber, wherein the glass fiber is preferably selected in the characteristic of being firmly connected with the photo-curing resin in the supporting layer 2. Preferably, in this embodiment, a receiving groove for receiving the strain assembly 3 is formed on the inner surface of the connecting piece, so that the connection between the support piece 21 and the outer surface of the support layer 2 is tighter. Of course, when the supporting layer 2 is manufactured by heat curing from inside to outside, the strain assembly 3 and the supporting sheet 21 can be sequentially adhered to the outer surface of the supporting layer 2, so as to save the manufacturing time of the insulated wire pole in the invention.

Based on the above embodiment, when the supporting layer 2 is not provided, the supporting piece 21 is directly attached to the periphery of the molding die of the telegraph pole, in this case, the wires 32 in the strain assembly 3 directly lead to the inside of the insulated telegraph pole, so that the stress variation condition in the insulated telegraph pole can be conveniently obtained, and the supporting piece 21 does not need to be reinstalled on the supporting layer 2, thereby being beneficial to improving the manufacturing efficiency of the insulated telegraph pole.

Compared with the prior art, the strain assembly 3 in the embodiment can feed back the stress condition of the supporting sheet 21 in real time, so that an operator on site can adjust the tension of the fiber bundles according to the stress condition of the supporting sheet 21, and the consistency of the internal stress of different positions of the insulated wire pole is improved.

It should be noted that, in a specific implementation process, as the winding thickness of the fiber bundles increases, the stress to which the strain assembly 3 is subjected also increases, and in addition, as the fiber bundles are continuously wound, the fiber bundles located in the middle layer lose part of the tension, so that the internal stress of the insulated wire pole is unevenly distributed in the invention, aiming at the problem, the support sheet 21 provided with the strain assembly 3 can be arranged in the composite layer 1, so that the pretensioning force of the fiber bundles can be adjusted according to the change of the winding thickness of the fiber bundles and the stress condition of the strain assembly 3, so that all the first fiber bundles 11 and the third fiber bundles 12 in the composite layer 1 can generate pretensioning force along the axial direction and the radial direction of the wire pole, and the structural strength of the insulated wire pole is enhanced.

In summary, compared with the prior art, the insulated wire pole of the invention can utilize the pretightening force of the first fiber bundle 11 to pull the first resin after thermosetting molding, so as to enhance the axial rigidity of the insulated wire pole; secondly, the first fiber bundles 11 are wound on the forming tool in a spiral mode, so that the first fiber bundles 11 can also hoop the first resin along the radial direction while pulling the first resin in the axial direction, the structural strength of the insulated telegraph pole is more comprehensively enhanced, the service life of the insulated telegraph pole is prolonged, and the technical problem that the existing insulated telegraph pole is easy to bend or swing under the condition of large radial load is solved; in addition to the above advantages, since the first fiber bundles 11 have two retraction tendencies of axial retraction and radial retraction, the connection between the first fiber bundles 11 in the composite layer 1 of the embodiment is more compact, and gaps and cavitation are not easy to generate between adjacent first fiber bundles 11, which is beneficial to improving the technical problem that the structural strength is affected by too many bubbles in the existing glass fiber telegraph pole. In addition to the above beneficial effects, the third fiber bundle 12 provided in the present invention can offset the offset moment generated by the first fiber bundle 11, so that the internal stresses at different positions in the insulated wire pole are kept consistent; the supporting sheet 21 provided by the invention can play a better role in binding the insulated wire pole; finally, the invention can adjust the tension of the first fiber bundle 11 or the third fiber bundle 12 in real time by the internal stress of the supporting sheet 21 reflected by the strain assembly 3, so as to be beneficial to keeping the consistency of the internal stress of different positions of the insulated wire pole. Of course, after the manufacturing of the insulated wire pole is completed, the strain assembly 3 can also detect the internal stress change condition of the insulated wire pole in the using process of the insulated wire pole, so that the potential safety hazard of the insulated wire pole in the using process is reduced.

Based on the same inventive concept, the invention also proposes a power transmission system comprising the insulated utility pole above.

The power transmission system of the present invention has all the advantages of the insulated utility pole described above, as compared to the prior art, and is not described here in any way.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (10)

1. The insulated wire pole is characterized by comprising a supporting sheet (21), a composite layer (1) and an outer protective layer which are sequentially arranged from inside to outside, wherein the supporting sheet (21) is in a strip shape and uniformly arranged around a first axis, the thickness direction and the length direction of the supporting sheet (21) are perpendicular to the first axis, the composite layer (1) and the outer protective layer are both cylinders, and the composite layer (1) and the outer protective layer are coaxial with the first axis; the composite layer (1) comprises first fiber bundles (11), wherein the first fiber bundles (11) are spirally distributed around a first axis, the peripheries of the first fiber bundles (11) are abutted against the outer surfaces of the supporting sheets (21), the first fiber bundles (11) are soaked in first resin, and the first fiber bundles (11) are arranged to have pretightening force shrinking along the axial direction of the first fiber bundles.

2. The insulated wire pole according to claim 1, further comprising a support layer (2) coaxially provided inside the composite layer (1), the support layer (2) being a cylindrical body, each support piece (21) being provided on an outer periphery of the support layer (2), an inner surface of the support piece (21) being in abutment with an outer periphery of the support layer (2), an outer surface being in abutment with an outer periphery of the first fiber bundle (11).

3. The insulated wire pole according to claim 2, wherein the support pieces (21) are uniformly distributed on the outer periphery of the support layer (2) at radial intervals centering on the first axis, and the support pieces (21) overlap end to end.

4. An insulated wire pole according to claim 3, characterized in that the support layer (2) comprises second fibre bundles, which are helically distributed around the first axis, which are impregnated with a second resin, the rotation directions of the first fibre bundles (11) being opposite, and in that the second resin is a photo-curable resin.

5. The insulated wire pole according to claim 2, wherein the composite layer (1) further comprises a third fiber bundle (12), the third fiber bundle (12) being helically wound around the first axis, and a central axis of the third fiber bundle (12) overlapping the first axis, a direction of rotation of the third fiber bundle (12) being opposite to a direction of rotation of the first fiber bundle (11), the third fiber bundle (12) being impregnated in the first resin.

6. The insulated wire pole of claim 5, wherein the outer protective layer is a polyurethane topcoat applied to the first resin or periphery, and wherein the polyurethane topcoat has a paint layer thickness of not less than 0.3mm.

7. The insulated wire pole according to claim 5, characterized in that the outer surface of the support sheet (21) is provided with a first clamping groove (211) and a second clamping groove (212), the first fiber bundles (11) are located in the first clamping groove (211), and the third fiber bundles (12) are located in the second clamping groove (212).

8. The insulated wire pole according to claim 7, wherein the outer circumference of the first fiber bundle (11) is formed with a plurality of first protrusions (111) along its own axis, the outer circumference of the third fiber bundle (12) is formed with a plurality of second protrusions (121) along its own axis, the outer surface of the support piece (21) is formed with a connection protrusion (22), and the connection protrusion (22) is located between two adjacent first protrusions (111) or between two adjacent second protrusions (121).

9. The insulated wire pole according to claim 8, further comprising a strain assembly (3), wherein the strain assembly (3) comprises a wire (32), a connecting film (33), a resistor sheet (31) and a cover film (34), wherein the strain assembly (3) is arranged between the supporting sheet (21) and the supporting layer (2), the connecting film (33), the resistor sheet (31) and the cover film (34) are sequentially stacked along a direction close to the first axis, the connecting film (33) is attached to the inner surface of the supporting sheet (21), the cover film (34) is attached to the outer surface of the supporting layer (2), the resistor sheet (31) is arranged between the connecting film (33) and the cover film (34), one end of the wire (32) is connected with the resistor sheet (31), and the other end of the wire is extended into the inner side of the supporting layer (2).

10. An electric power transmission system comprising the insulated wire pole of any one of claims 1 to 9.