Electro-optical composite overhead cable

Abstract

The invention belongs to the technical field of cables, and discloses an electro-optical composite overhead cable, which is provided with at least three aluminum-clad steel wires and an optical unit, the aluminum-clad steel wires are twisted outside the optical unit, the optical unit is composed of an inner sheath, six loose tubes and a reinforcing member, in the same cross section, the loose tubes and the reinforcing member are in a regular hexagon shape, and the inner sheath and the reinforcing member are in a regular hexagon shape. The six loose tubes are located around the reinforcer, the loose tubes are attached to the reinforcer, the adjacent loose tubes are attached, the inner sheath is located outside a cable core combination formed by the six loose tubes and the reinforcer, each loose tube is formed by inserting a protection component and a loose tube main body, a center cavity is formed in the middle of the loose tube main body, and the center cavity is provided with an opening. At least one first accommodating groove is formed in each of the left and right sides of the central cavity, optical fiber ribbons are arranged in the first accommodating grooves, and an internal optical transmission unit is arranged in the central cavity; the invention has the advantages that the optical fiber ribbon is convenient to take and use, the optical unit protection effect is good, and the protection component is not easy to separate.

Description

Technical Field

[0001] The invention belongs to the technical field of power cables in intelligent power grids, and particularly relates to an optical and electrical composite overhead cable. Background Art

[0002] OPGW optical cable, that is, ground wire composite optical cable, also known as optical fiber overhead ground wire. The ground wire in the power transmission line contains an optical fiber unit for communication. This kind of optical cable achieves both goals, that is, the electrical and mechanical properties of the ground wire are not damaged due to the setting of the optical fiber, and the optical fiber unit should also be properly protected from damage.

[0003] In the prior art, for example, CN204740381U discloses an aluminum-clad loose tube layer-stranded OPGW optical cable, which includes loose tube optical units. Four of these loose tube optical units are stranded on a central strengthening member. At least one of the four loose tube optical units is provided with an optical fiber, and the optical fiber is wrapped with grease; the four loose tube optical units are fixed by binding yarn to form a cable core; a polyimide film is coated on the cable core, and the polyimide film is wrapped around the cable core by a winding tape; a metal wire is wrapped outside the winding tape, and an aluminum-clad tube is wrapped outside the metal wire. It can be seen that there are defects in the prior art such as inconvenient access to the optical units in the loose tubes and insufficient compressive strength of the loose tubes. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to disclose an optical and electrical composite overhead cable, which is realized by the following technical solutions.

[0005] An optical and electrical composite overhead cable has at least three aluminum-clad steel wires and one optical unit. The aluminum-clad steel wires are stranded outside the optical unit. It is characterized in that: the optical unit is composed of an inner sheath, six loose tubes and a strengthening member. In the same cross-section, the loose tubes and the strengthening member are both regular hexagons, and the side lengths of the loose tubes and the strengthening member are equal. The six loose tubes are located around the strengthening member, and each loose tube has one side attached to the corresponding side of the strengthening member. Adjacent two loose tubes are in contact with each other. The inner sheath is located outside the cable core combination formed by the six loose tubes and the strengthening member; The loose tube is composed of a protection component and a loose tube main body. The protection component is composed of a main protection plate and two side protection plates. The two side protection plates are respectively located below the left and right sides of the main protection plate, and one end of the side protection plate is connected to the corresponding end of the main protection plate. The protection component is integrally formed; The loose tube main body is composed of two outer loose tube walls, one bottom loose tube wall and two inner loose tube walls. The left outer loose tube wall is in the shape of <, with a fold angle of 120°. The right outer loose tube wall is in the shape of >, with a fold angle of 120°. The lower ends of the two outer loose tube walls are respectively connected to the corresponding ends of the bottom loose tube wall; The two inner loose tube walls are located between the two outer loose tube walls. The left inner loose tube wall is in the shape of <, with a folding angle of 120°. The right inner loose tube wall is in the shape of >, with a folding angle of 120°. The upper ends of the two inner loose tube walls are connected, and the lower ends of the two inner loose tube walls are connected. A diamond-shaped central cavity is formed between the two inner loose tube walls. The lower end of the inner loose tube wall is connected to the bottom loose tube wall, and the upper end of the inner loose tube wall is lower than the upper end of the outer loose tube wall; A first receiving groove in the shape of < is formed between the left inner loose tube wall and the corresponding outer loose tube wall. A first receiving groove in the shape of > is formed between the right inner loose tube wall and the corresponding outer loose tube wall. The first receiving groove is composed of a first upper groove located above and a first lower groove located below. The loose tube body is integrally formed; The side protection plate of the protection component is inserted into the corresponding first upper groove. The main protection plate is attached to the upper ends of the two inner loose tube walls, and the upper side wall of the main protection plate is in the same plane as the upper ends of the corresponding two outer loose tube walls; At least one fiber ribbon is provided in the first receiving groove, and an internal optical transmission unit is provided in the central cavity.

[0006] For an electro-optical composite aerial cable as described above, it is characterized in that: all the protection components 221 are located on the outer edge of the cable core assembly.

[0007] For an electro-optical composite aerial cable as described above, it is characterized in that: a second receiving groove with an open upper end is provided in the inner loose tube wall, and at least one fiber ribbon is provided in the second receiving groove.

[0008] For an electro-optical composite aerial cable as described above, it is characterized in that: a filling component is further provided between two adjacent loose tubes and the inner sheath, and the material of the filling component is preferably plastic.

[0009] For an electro-optical composite aerial cable as described above, it is characterized in that: a first tear opening is provided above the connection of the upper ends of the two inner loose tube walls.

[0010] For an electro-optical composite aerial cable as described above, it is characterized in that: the internal optical transmission unit is at least one optical fiber or a butterfly unit.

[0011] For an electro-optical composite aerial cable as described above, it is characterized in that: the butterfly unit is composed of a butterfly unit sheath, two butterfly unit strengthening members and one optical fiber. The butterfly unit sheath is extruded outside the butterfly unit strengthening members and the optical fiber. The optical fiber is located between the two butterfly unit strengthening members. Two second tear openings for stripping the optical fiber are provided on the outer wall of the butterfly unit sheath. The butterfly unit sheath is closely attached to the four inner walls of the diamond-shaped central cavity, and the long axis of the butterfly unit coincides with the long axis of the diamond-shaped central cavity.

[0012] An electro-optical composite aerial cable as described above, characterized in that: the thickness of the inner loose tube wall is greater than the thickness of the outer loose tube wall.

[0013] An electro-optical composite aerial cable as described above, characterized in that: the material of the main body of the loose tube is polybutylene terephthalate.

[0014] An electro-optical composite aerial cable as described above, characterized in that: the inner sheath is a thin-walled stainless steel tube.

[0015] An electro-optical composite aerial cable as described above, characterized in that: the material of the strengthening member is steel or glass fiber reinforced plastic.

[0016] An electro-optical composite aerial cable as described above, characterized in that: the optical fiber is a multi-mode optical fiber or a single-mode optical fiber.

[0017] An electro-optical composite aerial cable as described above, characterized in that: the material of the protection component is steel.

[0018] An electro-optical composite aerial cable as described above, characterized in that: the optical fiber ribbon is formed by ribboning at least two optical fibers.

[0019] This application has the following beneficial effects: 1. The loose tube is composed of a protection component and the main body of the loose tube. When taking the optical fiber ribbon, there is no need to damage the loose tube.

[0020] 2. The protection component surrounds the outer circle of the optical unit, providing a better protection effect on the optical unit.

[0021] 3. The two side protection plates of the protection component are snapped into the corresponding first upper grooves, and the two side protection plates are in a V-shaped arrangement, making it difficult for the protection component to detach from the main body of the loose tube, the structure of the optical unit is more stable, and at the same time, the stress in the left and right directions of the protection component is also increased.

[0022] 4. The thickness of the inner loose tube wall is greater than the thickness of the outer loose tube wall, enabling the inner loose tube wall to provide stronger support for the protection component and improving the compressive strength of the optical cable.

[0023] 5. The optical fiber ribbon is located in the first lower groove. When the optical unit is squeezed, the side protection plate will not affect the optical fiber ribbon.

[0024] 6. The optical fiber ribbons are located in different grooves, playing a role in differentiation, and at the same time, the optical fiber ribbons in different grooves will not affect each other.

[0025] 7. Optical fibers or butterfly units can also be placed in the central cavity, expanding the application scenarios of the optical cable.

[0026] 8. A first tear opening is provided above the connection of the upper ends of the two inner loose tube walls, facilitating the stripping of the optical fiber or the butterfly unit in the central cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic structural diagram of the end face of Example 1.

[0028] Figure 2 FIG. is a schematic structural diagram of the end face of the optical unit of Example 1.

[0029] Figure 3 FIG. is a schematic structural diagram of the end face of the loose tube of Example 1.

[0030] Figure 4 FIG. is a schematic structural diagram of the end face of the loose tube body of Example 1.

[0031] Figure 5 FIG. is a schematic structural diagram of the end face of the protection component of Example 1.

[0032] Figure 6 FIG. is a schematic structural diagram of the end face of the loose tube of Example 2.

[0033] Figure 7 FIG. is a schematic structural diagram of the end face of the loose tube of Example 3.

[0034] Figure 8 FIG. is a schematic structural diagram of the end face of the loose tube body of Example 3.

[0035] In the figure: 1. Aluminum-clad steel wire, 2. Optical unit, 21. Inner sheath, 22. Loose tube, 221. Protection component, 2211. Main protection plate, 2212. Side protection plate, 222. Loose tube body, 2221. Outer loose tube wall, 2222. First upper groove, 2223. First lower groove, 2224. Bottom loose tube wall, 2225. Inner loose tube wall, 2226. Central cavity, 2227. Upper side opening, 2228. First tear opening, 2229. Second receiving groove, 223. Optical fiber, 224. Optical fiber ribbon, 225. Butterfly unit, 2251. Butterfly unit sheath, 2252. Second tear opening, 2253. Butterfly unit strengthening member, 23. Filling component, 24. Strengthening member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Example 1: As Figures 1 to 5, an electro-optical composite overhead cable, having six aluminum-clad steel wires 1 and one optical unit 2, with the aluminum-clad steel wires 1 stranded outside the optical unit 2, characterized in that: the optical unit 2 is composed of an inner sheath 21, six loose tubes 22, six filling components 23 and one strengthening member 24. In the same cross-section, both the loose tubes 22 and the strengthening member 24 are in a regular hexagon shape, and the side lengths of the loose tubes 22 and the strengthening member 24 are equal. The six loose tubes 22 are located around the strengthening member 24, and each loose tube 22 has one side attached to the corresponding side of the strengthening member 24. Adjacent two loose tubes 22 are in contact with each other. The inner sheath 21 is located outside the cable core combination formed by the six loose tubes 22 and the strengthening member 24, and the filling components 23 are located between the corresponding adjacent two loose tubes 22 and the inner sheath 21; The loose tube 22 is composed of a protection component 221 and a loose tube body 222. The protection component 221 is composed of a main protection plate 2211 and two side protection plates 2212. The two side protection plates 2212 are respectively located below the left and right sides of the main protection plate 2211, and one end of the side protection plate 2212 is connected to the corresponding end of the main protection plate 2211. The protection component 221 is integrally formed; The loose tube body 222 is composed of two outer loose tube walls 2221, one bottom loose tube wall 2224 and two inner loose tube walls 2225. The left outer loose tube wall 2221 is in a < shape with a fold angle of 120°. The right outer loose tube wall 2221 is in a > shape with a fold angle of 120°. The lower ends of the two outer loose tube walls 2221 are respectively connected to the corresponding ends of the bottom loose tube wall 2224; The two inner loose tube walls 2225 are located between the two outer loose tube walls 2221. The left inner loose tube wall 2225 is in a < shape with a fold angle of 120°. The right inner loose tube wall 2225 is in a > shape with a fold angle of 120°. The upper ends of the two inner loose tube walls 2225 are connected, and the lower ends of the two inner loose tube walls 2225 are connected. A diamond-shaped central cavity 2226 is formed between the two inner loose tube walls 2225. The lower end of the inner loose tube wall 2225 is connected to the bottom loose tube wall 2224. Above the connection of the upper ends of the two inner loose tube walls 2225, there is a first tear opening 2228. The upper end of the inner loose tube wall 2225 is lower than the upper end of the outer loose tube wall 2221; A < -shaped first accommodation groove is formed between the left inner loose tube wall 2225 and the corresponding outer loose tube wall 2221. A > -shaped first accommodation groove is formed between the right inner loose tube wall 2225 and the corresponding outer loose tube wall 2221. The first accommodation groove is composed of a first upper groove 2222 located above and a first lower groove 2223 located below. The loose tube body 222 is integrally formed; The side protection plate 2212 of the protection component 221 is inserted into the corresponding first upper groove 2222, the main protection plate 2211 is attached to the upper ends of the two inner loose tube walls 2225, and the upper side wall of the main protection plate 2211 and the upper ends of the corresponding two outer loose tube walls 2221 are in the same plane; A fiber optic ribbon 224 is provided in the first lower groove 2223, and at least one optical fiber 223 is provided in the central cavity 2226.

[0037] Embodiment 2: As Figure 6 , and referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 , an electro-optical composite overhead cable, having six aluminum-clad steel wires 1 and one optical unit 2, the aluminum-clad steel wires 1 are stranded outside the optical unit 2, and is characterized in that: the optical unit 2 is composed of an inner sheath 21, six loose tubes 22, six filling components 23 and one strengthening member 24. In the same cross-section, the loose tubes 22 and the strengthening member 24 are both regular hexagons, and the side lengths of the loose tubes 22 and the strengthening member 24 are equal. The six loose tubes 22 are located around the strengthening member 24, and each loose tube 22 has one side attached to the corresponding side of the strengthening member 24. Adjacent two loose tubes 22 are attached to each other. The inner sheath 21 is located outside the cable core combination formed by the six loose tubes 22 and the strengthening member 24, and the filling components 23 are located between the corresponding adjacent two loose tubes 22 and the inner sheath 21; The loose tube 22 is composed of a protection component 221 and a loose tube body 222. The protection component 221 is composed of a main protection plate 2211 and two side protection plates 2212. The two side protection plates 2212 are respectively located below the left and right sides of the main protection plate 2211, and one end of the side protection plate 2212 is connected to the corresponding end of the main protection plate 2211. The protection component 221 is integrally formed; The loose tube body 222 is composed of two outer loose tube walls 2221, one bottom loose tube wall 2224 and two inner loose tube walls 2225. The left outer loose tube wall 2221 is in a < shape with a folding angle of 120°, the right outer loose tube wall 2221 is in a > shape with a folding angle of 120°, and the lower ends of the two outer loose tube walls 2221 are respectively connected to the corresponding ends of the bottom loose tube wall 2224; The two inner loose tube walls 2225 are located between the two outer loose tube walls 2221. The left inner loose tube wall 2225 is in the shape of <, with a folding angle of 120°. The right inner loose tube wall 2225 is in the shape of >, with a folding angle of 120°. The upper ends of the two inner loose tube walls 2225 are connected, and the lower ends of the two inner loose tube walls 2225 are connected. A diamond-shaped central cavity 2226 is formed between the two inner loose tube walls 2225. The lower end of the inner loose tube wall 2225 is connected to the bottom loose tube wall 2224. Above the connection of the upper ends of the two inner loose tube walls 2225, there is a first tear opening 2228. The upper end of the inner loose tube wall 2225 is lower than the upper end of the outer loose tube wall 2221; A first receiving groove in the shape of < is formed between the left inner loose tube wall 2225 and the corresponding outer loose tube wall 2221. A first receiving groove in the shape of > is formed between the right inner loose tube wall 2225 and the corresponding outer loose tube wall 2221. The first receiving groove is composed of a first upper groove 2222 located above and a first lower groove 2223 located below. The loose tube body 222 is integrally formed; The side protection plates 2212 of the protection member 221 are inserted into the corresponding first upper grooves 2222, and the main protection plate 2211 is attached to the upper ends of the two inner loose tube walls 2225. The upper side wall of the main protection plate 2211 is in the same plane as the upper ends of the corresponding two outer loose tube walls 2221; A fiber ribbon 224 is provided in the first lower groove 2223, and a butterfly unit 225 is provided in the central cavity 2226. The butterfly unit 225 is composed of a butterfly unit sheath 2251, two butterfly unit strengthening members 2253, and an optical fiber 223. The butterfly unit sheath 2251 is extruded outside the butterfly unit strengthening members 2253 and the optical fiber 223. The optical fiber 223 is located between the two butterfly unit strengthening members 2253. Two second tear openings 2252 for stripping the optical fiber 223 are provided on the outer wall of the butterfly unit sheath 2251. The butterfly unit sheath 2251 is close to the four inner walls of the diamond-shaped central cavity 2226, and the long axis of the butterfly unit 225 coincides with the long axis of the diamond-shaped central cavity 2226.

[0038] Embodiment 3: As Figure 7 and Figure 8 and refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5, an electro-optical composite aerial cable, having six aluminum-clad steel wires 1 and one optical unit 2, with the aluminum-clad steel wires 1 stranded outside the optical unit 2. It is characterized in that: the optical unit 2 is composed of an inner sheath 21, six loose tubes 22, six filling components 23 and one strengthening member 24. In the same cross-section, both the loose tubes 22 and the strengthening member 24 are regular hexagons, and the side lengths of the loose tubes 22 and the strengthening member 24 are equal. The six loose tubes 22 are located around the strengthening member 24, and each loose tube 22 has one side in contact with the corresponding side of the strengthening member 24. Adjacent two loose tubes 22 are in contact with each other. The inner sheath 21 is located outside the cable core combination formed by the six loose tubes 22 and the strengthening member 24, and the filling components 23 are located between the corresponding adjacent two loose tubes 22 and the inner sheath 21; The loose tube 22 is composed of a protection component 221 and a loose tube main body 222. The protection component 221 is composed of a main protection plate 2211 and two side protection plates 2212. The two side protection plates 2212 are respectively located below the left and right sides of the main protection plate 2211, and one end of the side protection plate 2212 is connected to the corresponding end of the main protection plate 2211. The protection component 221 is integrally formed; The loose tube main body 222 is composed of two outer loose tube walls 2221, one bottom loose tube wall 2224 and two inner loose tube walls 2225. The left outer loose tube wall 2221 is in the shape of <, with a fold angle of 120°. The right outer loose tube wall 2221 is in the shape of >, with a fold angle of 120°. The lower ends of the two outer loose tube walls 2221 are respectively connected to the corresponding ends of the bottom loose tube wall 2224; The two inner loose tube walls 2225 are located between the two outer loose tube walls 2221. The left inner loose tube wall 2225 is in the shape of <, with a fold angle of 120°. The right inner loose tube wall 2225 is in the shape of >, with a fold angle of 120°. The upper ends of the two inner loose tube walls 2225 are connected, and the lower ends of the two inner loose tube walls 2225 are connected. A rhombic central cavity 2226 is formed between the two inner loose tube walls 2225. The lower end of the inner loose tube wall 2225 is connected to the bottom loose tube wall 2224. Above the connection of the upper ends of the two inner loose tube walls 2225, a first tear opening 2228 is provided. The upper end of the inner loose tube wall 2225 is lower than the upper end of the outer loose tube wall 2221; A < -shaped first accommodation groove is formed between the left inner loose tube wall 2225 and the corresponding outer loose tube wall 2221, and a > -shaped first accommodation groove is formed between the right inner loose tube wall 2225 and the corresponding outer loose tube wall 2221. The first accommodation groove is composed of a first upper groove 2222 located above and a first lower groove 2223 located below. The loose tube main body 222 is integrally formed; The side protection plate 2212 of the protection component 221 is inserted into the corresponding first upper groove 2222, the main protection plate 2211 is attached to the upper ends of the two inner loose tube walls 2225, and the upper side wall of the main protection plate 2211 and the upper ends of the corresponding two outer loose tube walls 2221 are in the same plane; A second receiving groove 2229 with an open upper end is provided in the inner loose tube wall 2225; An optical fiber ribbon 224 is provided in the first lower groove 2223, at least one optical fiber 223 is provided in the central cavity 2226, and at least one optical fiber ribbon 224 is provided in the second receiving groove 2229.

[0039] An electro-optical composite overhead cable according to the present application is characterized in that: all the protection components 221 are located on the outer edge of the cable core assembly.

[0040] An electro-optical composite overhead cable according to the present application is characterized in that: the thickness of the inner loose tube wall 2225 is greater than the thickness of the outer loose tube wall 2221.

[0041] An electro-optical composite overhead cable according to the present application is characterized in that: the material of the loose tube body 222 is polybutylene terephthalate.

[0042] An electro-optical composite overhead cable according to the present application is characterized in that: the inner sheath 21 is a thin-walled stainless steel tube.

[0043] An electro-optical composite overhead cable according to the present application is characterized in that: the material of the strengthening member 24 is steel or glass fiber reinforced plastic.

[0044] An electro-optical composite overhead cable according to the present application is characterized in that: the optical fiber 223 is a multimode optical fiber or a single-mode optical fiber.

[0045] An electro-optical composite overhead cable according to the present application is characterized in that: the material of the protection component 221 is steel.

[0046] An electro-optical composite overhead cable according to the present application is characterized in that: the optical fiber ribbon 224 is formed by combining at least two optical fibers 223.

[0047] The present application has the following beneficial effects: 1. The loose tube 22 is composed of the protection component 221 and the loose tube body 222. When taking out the optical fiber ribbon 224, it is not necessary to damage the loose tube 22.

[0048] 2. The protection component 221 surrounds the outer circle of the optical unit 2, and has a better protection effect on the optical unit.

[0049] 3. The two side protection plates 2212 of the protection component 221 are snapped into the corresponding first upper grooves 2222, and the two side protection plates 2212 are in a V-shaped configuration, making it difficult for the protection component 221 to disengage from the loose tube body 222, stabilizing the structure of the optical unit 2 and enhancing the stress resistance of the protection component 221 in the left and right directions.

[0050] 4. The thickness of the inner loose tube wall 2225 is greater than that of the outer loose tube wall 2221, enabling the inner loose tube wall 2225 to provide stronger support for the protection component 221 and improving the compressive resistance of the optical cable.

[0051] 5. The optical fiber ribbon 224 is located in the first lower groove 2223, and when the optical unit 2 is squeezed, the side protection plates 2212 will not affect the optical fiber ribbon 224.

[0052] 6. The optical fiber ribbons 224 are located in different grooves, serving as a distinguishing feature, and the optical fiber ribbons 224 in different grooves will not affect each other.

[0053] 7. Optical fibers 223 or butterfly units 225 can also be placed in the central cavity 2226, expanding the application scenarios of the optical cable.

[0054] 8. Above the connection of the upper ends of the two inner loose tube walls 2225, a first tear opening 2228 is provided, facilitating the peeling of the optical fibers 223 or butterfly units 225 in the central cavity 2226.

[0055] The optical part of this application can be used as an intelligent sensor or an intelligent sensing element; since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor or an image sensor; since it transmits optical signals based on the total internal reflection principle, it can also be used as a distance sensor; the optical fiber in this application itself is an optical waveguide, so it can be used as an optical waveguide, such as an array optical waveguide or a diffractive optical waveguide; this application can also be used in the field of optical computing, such as in optical computing, optical computing, and optical network computing, as part of optical chip computing. This application can be used in smart grids, such as in intelligent distribution systems and distribution switch control devices such as facilities; the material of the loose tube body can also be cross-linked polyethylene insulating plastic.

[0056] This application can also be referred to as: composite optical cable ground wire, or optical fiber composite overhead ground wire, or OPGW optical cable.

[0057] The above embodiments are only the preferred technical solutions of the present invention and should not be construed as limitations on the present invention. The protection scope of the present invention shall be defined by the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An electro-optical composite overhead cable, comprising at least three aluminum-clad steel wires (1) and an optical unit (2), wherein the aluminum-clad steel wires (1) are twisted outside the optical unit (2), characterized in that: The optical unit (2) is composed of an inner sheath (21), six loose tubes (22) and a reinforcement member (24); in the same cross section, the loose tube (22) and the reinforcement member (24) are both regular hexagons; the sides of the loose tube (22) and the reinforcement member (24) are equal; the six loose tubes (22) are all located around the reinforcement member (24); each loose tube (22) has an edge that is in contact with a corresponding edge of the reinforcement member (24); two adjacent loose tubes (22) are in contact with each other; and the inner sheath (21) is located outside the cable core combination composed of the six loose tubes (22) and the reinforcement member (24); The loose tube (22) is composed of a protective component (221) and a loose tube body (222); the protective component (221) is composed of a main protective plate (2211) and two side protective plates (2212); the two side protective plates (2212) are respectively located below the left and right sides of the main protective plate (2211); one end of the side protective plate (2212) is connected to the corresponding end of the main protective plate (2211); and the protective component (221) is integrally formed; The loose tube body (222) is composed of two outer loose tube walls (2221), a bottom loose tube wall (2224) and two inner loose tube walls (2225), the outer loose tube wall (2221) on the left side is in a < shape with a folding angle of 120°, the outer loose tube wall (2221) on the right side is in a > shape with a folding angle of 120°, and the lower ends of the two outer loose tube walls (2221) are respectively connected to the corresponding ends of the bottom loose tube wall (2224); Two inner layer loose tube walls (2225) are located between two outer layer loose tube walls (2221), the inner layer loose tube wall (2225) on the left side is in a < shape, with a folding angle of 120°, the inner layer loose tube wall (2225) on the right side is in a > shape, with a folding angle of 120°, the upper ends of the two inner layer loose tube walls (2225) are connected, the lower ends of the two inner layer loose tube walls (2225) are connected, a rhombus-shaped central cavity (2226) is formed between the two inner layer loose tube walls (2225), the lower end of the inner layer loose tube wall (2225) is connected to the bottom loose tube wall (2224), and the upper end of the inner layer loose tube wall (2225) is lower than the upper end of the outer layer loose tube wall (2221); A first accommodating groove in the shape of < is formed between the inner layer loose tube wall (2225) on the left side and the corresponding outer layer loose tube wall (2221), a first accommodating groove in the shape of > is formed between the inner layer loose tube wall (2225) on the right side and the corresponding outer layer loose tube wall (2221), the first accommodating groove is composed of a first upper groove (2222) located at the top and a first lower groove (2223) located at the bottom, and the loose tube body (222) is integrally formed; The side protection plate (2212) of the protection component (221) is inserted into the corresponding first upper groove (2222), the main protection plate (2211) is fitted with the upper ends of the two inner loose tube walls (2225), and the upper side wall of the main protection plate (2211) and the upper ends of the two corresponding outer loose tube walls (2221) are located in the same plane; At least one optical fiber ribbon (224) is arranged in the first receiving groove, and an internal optical transmission unit is arranged in the central cavity (2226).

2. The electro-optical composite overhead cable according to claim 1, characterized in that: A filling component (23) is also provided between two adjacent loose tubes (22) and the inner sheath (21).

3. The electro-optical composite overhead cable according to claim 2, characterized in that: A first tearing opening (2228) is provided above the connection between the upper ends of the two inner loose tube walls (2225).

4. The electro-optical composite overhead cable according to claim 3, characterized in that: The internal optical transmission unit is at least one optical fiber (223), or the internal optical transmission unit is a butterfly unit (225).

5. The electro-optical composite overhead cable according to claim 4, characterized in that: The butterfly unit (225) is composed of a butterfly unit protective layer (2251), two butterfly unit reinforcement members (2253) and an optical fiber (223). The butterfly unit protective layer (2251) is extruded outside the butterfly unit reinforcement member (2253) and the optical fiber (223). The optical fiber (223) is located between the two butterfly unit reinforcement members (2253). The butterfly unit protective layer (2251) is close to the four inner walls of the rhombus central cavity (2226). The long axis of the butterfly unit (225) coincides with the long axis of the rhombus central cavity (2226).

6. The electro-optical composite overhead cable according to claim 5, characterized in that: The thickness of the inner loose tube wall (2225) is greater than the thickness of the outer loose tube wall (2221).

7. The electro-optical composite overhead cable according to claim 6, characterized in that: The material of the loose tube body (222) is polybutylene terephthalate.

8. The electro-optical composite overhead cable according to claim 7, characterized in that: The inner sheath (21) is a thin-walled stainless steel tube.

9. The electro-optical composite overhead cable according to claim 8, characterized in that: The material of the reinforcement member (24) is steel or glass fiber reinforced plastic.

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