Optical cable suspension devices and transmission towers

Abstract

This application provides an optical cable suspension device and a transmission tower. The optical cable suspension device includes: a main frame; a first connecting portion disposed at one end of the main frame along a first direction, the first connecting portion being used to connect to a transmission tower; and a second connecting portion disposed at one end of the main frame along the first direction away from the first connecting portion, the second connecting portion being used to suspend an optical cable extending along the first direction; wherein at least one of the main frame, the first connecting portion, and the second connecting portion includes an insulation device, the insulation device being used to insulate the optical cable from the transmission tower. In this application, the optical cable suspension device is connected to the transmission tower via the first connecting portion, the second connecting portion suspends the optical cable, and the main frame connects both and bears the load. By suspending the optical cable via the second connecting portion and the insulation device providing electrical insulation between the optical cable and the transmission tower, the optical cable achieves ground insulation, structurally ensuring the safety of power transmission and optical cable communication.

Description

Technical Field

[0001] This application relates to the field of optical cable suspension technology for power transmission lines, and in particular to an optical cable suspension device and a power transmission tower. Background Technology

[0002] High-voltage direct current (HVDC) transmission technology has become an important component of modern power systems due to its superior performance in long-distance, high-capacity power transmission. In HVDC systems, ground-return operation is a common mode of operation, especially in unipolar operation or system fault conditions, where the current is closed by using the ground as part of the loop. However, this mode of operation places higher demands on system design and safety.

[0003] To ensure the safety and reliability of the system, lightning protection conductors near the grounding electrode area must be insulated from the ground. This is because, in earth return mode, the potential in the area near the grounding electrode may rise. If the lightning protection conductor is not insulated, it may lead to unnecessary current leakage or arcing, thereby endangering system safety.

[0004] Traditionally, lightning protection wires were implemented using ordinary metal conductors. However, with technological advancements, OPGW (Optical Fiber Composite Overhead Ground Wire) cables have gradually replaced ordinary lightning protection wires. OPGW not only provides lightning protection but can also transmit fiber optic communication signals simultaneously, thus finding widespread application in modern power transmission lines. However, the outer metal layer of the OPGW cable is directly connected to the ground, making natural insulation from the ground impossible. Therefore, in areas close to the grounding electrode, insulated wiring hardware is required to ensure the cable's insulation from the ground. Utility Model Content

[0005] This application provides an optical cable suspension device and a transmission tower. The optical cable is suspended through a second connection, and the insulation device provides electrical insulation between the optical cable and the transmission tower, thereby achieving ground insulation of the optical cable and improving the safety and reliability of the power transmission system.

[0006] On one hand, this application provides an optical cable suspension device, comprising: a main frame; a first connecting portion disposed at one end of the main frame along a first direction, the first connecting portion being used to connect to a transmission tower; and a second connecting portion disposed at one end of the main frame away from the first connecting portion along the first direction, the second connecting portion being used to suspend an optical cable extending along the first direction; wherein at least one of the main frame, the first connecting portion, and the second connecting portion includes an insulating device, the insulating device being used to insulate the optical cable from the transmission tower.

[0007] This utility model's optical cable suspension device connects to the transmission tower via a first connecting part, suspends the optical cable via a second connecting part, and connects the two with a main frame that bears the load. The optical cable is suspended via the second connecting part, and the insulation device provides electrical insulation between the optical cable and the transmission tower, achieving ground insulation of the optical cable and structurally ensuring the safety of power transmission and optical cable communication.

[0008] In some embodiments, the second connection portion includes a first connection end and a second connection end, the first connection end being connected to the main frame, and the second connection end being provided with a suspension device for suspending the optical cable.

[0009] According to some embodiments of this utility model, the suspension device includes a hanging ring, an inner twisted wire, and an outer twisted wire. The hanging ring has a through hole through which the optical cable passes.

[0010] The inner strand and the outer strand are wound sequentially outward along the radial direction of the optical cable, and the outer strand is fixedly connected to the hanging ring.

[0011] According to some embodiments of this utility model, both the outer stranded wire and the inner stranded wire are aluminum-clad steel.

[0012] In some embodiments, the main frame includes a first connecting plate, a second connecting plate, and two insulating members. The first connecting plate and the second connecting plate both extend along a second direction and are spaced apart along the first direction. The two insulating members are spaced apart along the second direction, and the two ends of the two insulating members along the first direction are respectively fixedly connected to the ends of the first connecting plate and the second connecting plate along the second direction. The insulating members constitute the insulating device.

[0013] According to some embodiments of the present invention, the first connecting end of the second connecting portion is fixedly connected to the middle portion of the second connecting plate, and / or,

[0014] The first connecting part is fixedly connected to the middle part of the first connecting plate.

[0015] According to some embodiments of this utility model, both the first connecting plate and the second connecting plate are triangular connecting plates.

[0016] The two insulating components are respectively connected to the first connecting end at the corner of the second connecting plate, and / or,

[0017] The two insulating components and the first connecting portion are respectively connected to the corner of the first connecting plate.

[0018] According to some embodiments of the present invention, the insulating component includes a ceramic insulator, the outer diameter of which gradually decreases in a direction away from the second connection portion along a first direction.

[0019] In some embodiments, the first connection portion includes at least one U-shaped hanging ring that passes through the middle of the first connecting plate on the main frame and is used for connection with the transmission tower.

[0020] Secondly, embodiments of this application provide a power transmission tower, including: a tower body,

[0021] The aforementioned optical cable suspension device is connected to the tower body.

[0022] The transmission tower of this invention, by installing the aforementioned optical cable suspension device, can safely and stably suspend the optical cable, ensuring reliable insulation between the optical cable and the tower body and avoiding safety accidents or communication interruptions caused by insulation failure. At the same time, the optical cable suspension device has strong structural adaptability and can be flexibly adjusted according to the model of the transmission tower and the specifications of the optical cable, improving the compatibility of the transmission tower and the optical cable system and the overall operational reliability. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 This is one of the structural schematic diagrams of the optical cable suspension device according to an embodiment of the present utility model;

[0025] Figure 2 This is a second schematic diagram of the optical cable suspension device according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the insulating component according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the U-shaped hanging ring according to an embodiment of the present utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Optical cable suspension device;

[0030] 110 - Main frame; 111 - First connecting plate; 112 - Second connecting plate; 113 - Insulating component;

[0031] 120 - First connecting part; 121 - U-shaped hanging ring;

[0032] 130 - Second connecting part; 131 - First connecting end; 132 - Second connecting end; 133 - Suspension device; 1331 - Hanging ring; 1331a - Through hole; 1332 - Inner twisted wire; 1333 - Outer twisted wire;

[0033] 200-optical fiber cable;

[0034] 300 - Insulating connector.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] High-voltage direct current (HVDC) transmission technology has become an important component of modern power systems due to its superior performance in long-distance, high-capacity power transmission. In HVDC systems, ground-return operation is a common mode of operation, especially in unipolar operation or system fault conditions, where the current is closed by using the ground as part of the loop. However, this mode of operation places higher demands on system design and safety.

[0038] To ensure the safety and reliability of the system, lightning protection conductors near the grounding electrode area must be insulated from the ground. This is because, in earth return mode, the potential in the area near the grounding electrode may rise. If the lightning protection conductor is not insulated, it may lead to unnecessary current leakage or arcing, thereby endangering system safety.

[0039] Traditionally, lightning protection wires were implemented using ordinary metal conductors. However, with technological advancements, OPGW (Optical Fiber Composite Overhead Ground Wire) cables have gradually replaced ordinary lightning protection wires. OPGW not only provides lightning protection but can also transmit fiber optic communication signals simultaneously, thus finding widespread application in modern power transmission lines. However, the outer metal layer of the OPGW cable is directly connected to the ground, making natural insulation from the ground impossible. Therefore, in areas close to the grounding electrode, insulated wiring hardware is required to ensure the cable's insulation from the ground.

[0040] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0041] For ease of description and understanding, references are made to the embodiments of this application. Figure 1 The first direction can be the direction in which the optical cable extends, such as... Figure 1 The X direction shown can be followed by a second direction, which can be a direction perpendicular to the optical cable in the horizontal plane, such as... Figure 1 Y direction shown.

[0042] refer to Figures 1 to 4 In a first aspect, embodiments of the present invention provide an optical cable suspension device 100, which may include a main frame 110, a first connecting part 120, and a second connecting part 130.

[0043] The main frame 110, as the core load-bearing structure of the device, provides an installation foundation for other components. The first connecting part 120 is disposed at one end of the main frame 110 along the first direction (X direction). The first connecting part 120 is used to connect with the transmission tower. For example, the first connecting part 120 may include a connecting plate. One end of the connecting plate can be rotatably connected to the main frame 110 by bolts or pins. The other end of the connecting plate defines a mounting hole that is aligned with the positioning hole on the angle steel on the transmission tower. Bolts or closed-end pins are used to fasten the device by passing through the mounting hole and the positioning hole to connect the optical cable suspension device 100 to the transmission tower. Alternatively, the first connecting part 120 may include a hook facing the end of the transmission tower. The transmission tower is provided with a slot. The hook is engaged in the slot to connect the optical cable suspension device 100 to the transmission tower. Alternatively, the first connecting part 120 may also include a hanging ring 1331 structure (such as the U-shaped hanging ring 121 described below), the hanging ring 1331 structure passing through the through hole on the main frame 110, the hanging ring 1331 structure may have a connecting arm, the connecting arm may be provided with a mounting hole, which is aligned with the positioning hole on the angle steel, and bolts or closed pins are used to fasten the fasteners through the mounting hole and the positioning hole, so that the optical cable suspension device 100 is connected to the transmission tower.

[0044] The second connecting part 130 is disposed at one end of the main frame 110 away from the first connecting part 120 along the first direction. The second connecting part 130 is used to suspend the optical cable 200 extending along the first direction. For example, the second connecting part 130 can clamp and suspend the optical cable 200 through a slotted structure, or the second connecting part 130 can also integrate multiple hooks with upward openings. The multiple hooks are arranged at intervals along the first direction. The optical cable 200 is inserted into the hook through the opening of the hook to realize the carrying and positioning of the optical cable 200.

[0045] At least one of the main frame 110, the first connecting part 120, and the second connecting part 130 includes an insulating device for insulating the optical cable 200 from the transmission tower. For example, the insulating device may be provided on the main frame 110, or the first connecting part 120, or the second connecting part 130, or two of the main frame 110, the first connecting part 120, and the second connecting part 130 may be provided with insulating devices. Of course, the main frame 110, the first connecting part 120, and the second connecting part 130 may all be provided with insulating devices.

[0046] The insulation device can be an insulation layer installed at the connection between the main frame 110 and the first connecting part 120, or it can be an insulation layer installed at the connection between the main frame 110 and the second connecting part 130, or it can be an insulating connector 300 (such as an insulator) installed in the direction of current conduction from the optical cable 200 to the transmission tower. The insulation device prevents current conduction or potential interference between the optical cable 200 and the transmission tower, especially in ground return mode, ensuring the electrical safety and stability of the transmission system.

[0047] The optical cable suspension device 100 of this utility model is connected to the transmission tower via a first connecting part 120, and the optical cable 200 is suspended via a second connecting part 130. The main frame 110 connects the two and bears the load. The optical cable 200 is suspended via the second connecting part 130, and the insulation device provides electrical insulation between the optical cable 200 and the transmission tower, achieving ground insulation of the optical cable 200. Structurally, this ensures the safety of power transmission and communication via the optical cable 200.

[0048] refer to Figure 1 and Figure 2 In some embodiments, the second connection portion 130 includes a first connection end 131 and a second connection end 132. The first connection end 131 is connected to the main frame 110. For example, the first connection end 131 can be connected to the main frame 110 by fasteners such as bolts and pins to ensure the suspension stability of the cable.

[0049] The second connecting end 132 is provided with a suspension device 133 for suspending the optical cable 200. Exemplarily, the suspension device 133 may include a clamp-type suspension structure, comprising two symmetrically arranged arc-shaped clamp pieces outside the optical cable 200. The arc-shaped clamp pieces are fixedly connected to the second connecting end 132 by welding or bolts or other fasteners, and the two arc-shaped clamp pieces encircle and suspend the optical cable 200. Alternatively, the suspension device 133 may also include a pulley-type suspension structure, which may include at least one insulated pulley component. The insulated pulley component is fixedly connected to the second connecting end 132 and has a groove extending along a first direction, within which the optical cable 200 is disposed. Thus, the suspension device 133 achieves flexible fixation of the optical cable 200, reducing wear caused by vibration or displacement.

[0050] refer to Figure 1 and Figure 2 In some embodiments, the suspension device 133 may include a hanging ring 1331, an inner twisted wire 1332, and an outer twisted wire 1333. The hanging ring 1331 has a through hole 1331a through which the optical cable 200 passes, providing a passage for the optical cable 200. The inner twisted wire 1332 and the outer twisted wire 1333 are wound sequentially around the optical cable 200 radially outward. The inner twisted wire 1332 is in direct contact with the optical cable 200, which can buffer the load and protect the outer sheath of the optical cable 200. The outer twisted wire 1333 wraps around the inner twisted wire 1332, enhancing the overall structural strength. The outer twisted wire 1333 is fixedly connected to the hanging ring 1331. For example, the outer twisted wire 1333 can be fixed to the hanging ring 1331 by welding or bolting, so that the optical cable 200 forms a stable connection with the hanging ring 1331 through the twisted wire, ensuring the reliability of the suspension.

[0051] In some embodiments, both the outer strand 1333 and the inner strand 1332 are aluminum-clad steel. The aluminum-clad steel material combines the high strength of steel with the corrosion resistance of aluminum, which can withstand the long-term load of the optical cable 200 and resist the corrosion of the outdoor environment, extending the service life of the suspension device 133. At the same time, its good toughness can reduce rigid damage to the optical cable 200.

[0052] refer to Figure 1 and Figure 2In some embodiments, the main frame 110 includes a first connecting plate 111, a second connecting plate 112, and two insulating members 113. Both the first connecting plate 111 and the second connecting plate 112 extend along a second direction, and are spaced apart along a first direction to form the basic framework of the main frame 110. The two insulating members 113 are spaced apart along the second direction, and their ends along the first direction are respectively fixedly connected to the ends along the second direction of the first connecting plate 111 and the second connecting plate 112. For example, each end of the two insulating members 113 along the first direction has a first mounting hole, and the ends of the first connecting plate 111 and the second connecting plate 112 along the first direction have second mounting holes. When the main frame 110 is assembled, the first mounting holes and the second mounting holes correspond one-to-one, and bolts or locking pins or other fasteners pass through the first mounting holes and the second mounting holes to fix the four corners of the main frame 110. By combining the connecting plate and the insulating component 113, the main frame 110 not only provides structural support, but also enhances the overall insulation performance through the insulating component 113. At the same time, the spaced structures can distribute the load and improve the resistance to deformation.

[0053] Understandably, the insulating component 113 constitutes the aforementioned insulating device. The insulating component 113 can be an insulating porcelain piece, or it can be a rubber component, a silicone component, or it can be a synthetic material, such as glass fiber reinforced epoxy resin. In this way, under the premise that the main frame 110 has sufficient supporting strength, the insulating component 113 blocks the current path between the first connecting part 120 and the second connecting part 130, thereby improving the reliability of the insulation effect between the optical cable 200 and the transmission tower.

[0054] refer to Figure 1 and Figure 2 In some embodiments, the first connecting end 131 of the second connecting portion 130 is fixedly connected to the middle of the second connecting plate 112, and the first connecting portion 120 is fixedly connected to the middle of the first connecting plate 111. Positioning the connecting portion in the middle of the connecting plate allows for a more even distribution of load across the plate, preventing structural damage caused by excessive local stress, improving the stress balance of the main frame 110, and further enhancing the structural reliability of the optical cable suspension device 100.

[0055] refer to Figure 1In some embodiments, both the first connecting plate 111 and the second connecting plate 112 are triangular connecting plates. The triangular structure features high stability and strong torsional resistance, effectively handling complex loads during the suspension of the optical cable 200. Two insulating components 113 and the first connecting end 131 are respectively connected to the corners of the second connecting plate 112, and two insulating components 113 and the first connecting portion 120 are respectively connected to the corners of the first connecting plate 111. That is, for the first connecting plate 111, the two corners along the second direction are fixedly connected to the two conductive components, and the corner along the first direction away from the main frame 110 is connected to the first connecting portion 120. For the second connecting plate 112, the two corners along the second direction are fixedly connected to the two conductive components, and the corner along the first direction away from the main frame 110 is connected to the second connecting portion 130. Thus, the corner connection method further optimizes the force transmission path, allowing the load to be evenly distributed from the connecting portion to the entire connecting plate through the sides and corners of the triangle, enhancing the structural stability of the main frame 110.

[0056] Understandably, in other embodiments of this application, the first connecting plate 111 and the second connecting plate 112 may also be other structures. For example, the first connecting plate 111 and the second connecting plate 112 may be arc-shaped plates. Taking the first connecting plate 111 as an example, the two ends of the first connecting plate 111 along the second direction may be connected to two insulating members 113 respectively. The arc-shaped segment of the first connecting plate 111 is located on the side of the first connecting plate 111 away from the main frame 110 and protrudes along the first direction. The first connecting part 120 may be connected to the middle part of the arc-shaped segment to optimize the force transmission path.

[0057] refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the insulating component 113 may include a ceramic insulator, which has excellent insulation performance and high temperature and aging resistance, making it suitable for outdoor high-voltage environments. The outer diameter of the ceramic insulator gradually decreases in the direction away from the second connection portion 130 along the first direction. That is, the ceramic insulator can be formed into a conical structure or a horn-like structure. The diameter of the end face of the ceramic insulator facing the second connection portion 130 is the largest, forming a variable diameter structure. This variable diameter design can increase the creepage distance of the insulator, improve the insulation effect, and at the same time reduce the overall weight and lower the installation difficulty.

[0058] refer to Figure 1In some embodiments, an insulating connector 300 may be provided on the transmission tower. The insulating connector 300 is positioned higher than the connection position of the first connecting part 120 on the transmission tower. The insulating connector 300 may be fixedly connected to the insulating part 113, or the insulating connector 300 may be fixedly connected to the second connecting plate 112 to apply tension to the optical cable suspension device 100, making the optical cable 200 more stable on the optical cable suspension device 100.

[0059] refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the first connecting portion 120 includes at least one U-shaped hanging ring 121. The U-shaped hanging ring 1331 passes through the middle of the first connecting plate 111 on the main frame 110. The U-shaped hanging ring 1331 is used to connect with the transmission tower. Exemplarily, the U-shaped hanging ring 121 may include two connecting arms and a bent section. The two connecting arms are connected by the bent section, which passes through a connecting hole on the first connecting plate 111 of the main frame 110 and is fixedly connected to the main frame 110. The two connecting arms of the U-shaped hanging ring 121 are provided with through holes. An angle steel on the transmission tower can extend between the two connecting arms. The portion of the angle steel located between the two connecting arms is provided with a fixing hole. Fasteners such as bolts and locking pins pass through the fixing holes and through holes to connect the U-shaped hanging ring 121 with the transmission tower. The U-shaped hanging ring 121 has a simple structure and flexible connection, which can adapt to different installation positions on the transmission tower. Its arc-shaped structure can disperse the stress at the connection point and improve the connection reliability.

[0060] Understandably, in this embodiment, there can be one U-shaped hanging ring 121. When the location to be connected on the transmission tower is far away, there can also be multiple U-shaped hanging rings 121 connected in series to form the first connecting part 120.

[0061] The working principle of the optical cable suspension device 100 of this application is as follows: The main frame 110 adopts a triangular first connecting plate 111 and a second connecting plate 112, which are arranged at intervals along the first direction. The two ends of the two plates are fixedly connected by two ceramic insulators (insulating parts 113). The ceramic insulators are arranged at intervals along the second direction, and the outer diameter gradually decreases in the direction away from the second connecting part 130, which ensures insulation performance and reduces weight. The first connecting part 120 is a U-shaped hanging ring 1331, which passes through the middle of the first connecting plate 111 and is fixed. The open end of the U-shaped hanging ring 1331 is hooked to the preset connection point of the transmission tower, which is convenient and stable for installation. The first connecting end 131 of the second connecting part 130 is welded to the middle of the second connecting plate 112. The suspension device 133 of the second connecting end 132 consists of a hanging ring 1331, an inner twisted wire 1332, and an outer twisted wire 1333. After the optical cable 200 passes through the through hole 1331a of the hanging ring 1331, the inner stranded wire 1332 (aluminum-clad steel material) is first wound around it, and then the outer stranded wire 1333 (of the same material) is wound around it on the outer layer. The end of the outer stranded wire 1333 is welded and fixed to the hanging ring 1331, forming a flexible wrapping around the optical cable 200, which prevents the optical cable 200 from slipping and reduces wear. During operation, the weight of the optical cable 200 is transferred to the second connecting plate 112 of the main frame 110 through the second connecting part 130, then distributed to the first connecting plate 111 by the ceramic insulator, and finally transferred to the transmission tower through the first connecting part 120. Due to the ceramic insulator and other possible insulation designs in the main frame 110, reliable insulation is formed between the optical cable 200 and the transmission tower, ensuring that the two operate independently. The optical cable suspension device 100 of this application has a stable structure, reliable insulation, and convenient installation, which can effectively meet the needs of optical cable 200 suspension in transmission lines and improve the safety and durability of the transmission system.

[0062] Secondly, this application provides a power transmission tower, which may include: a tower body and the aforementioned optical cable suspension device 100, wherein the optical cable suspension device 100 is connected to the main frame 110 tower body.

[0063] The transmission tower of this invention, by installing the aforementioned optical cable suspension device 100, can safely and stably suspend the optical cable 200, ensuring reliable insulation between the optical cable 200 and the tower body, and avoiding safety accidents or communication interruptions caused by insulation failure. At the same time, the optical cable suspension device 100 has strong structural adaptability and can be flexibly adjusted according to the model of the transmission tower and the specifications of the optical cable 200, improving the compatibility and overall operational reliability of the transmission tower and optical cable 200 system.

[0064] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0065] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A fiber optic cable suspension device (100), characterized in that, include: Main frame (110); A first connecting part (120) is disposed at one end of the main frame (110) along a first direction, and the first connecting part (120) is used to connect to the transmission tower; The second connecting part (130) is disposed at one end of the main frame (110) away from the first connecting part (120) along the first direction, and the second connecting part (130) is used to suspend the optical cable (200) extending along the first direction. At least one of the main frame (110), the first connecting part (120) and the second connecting part (130) includes an insulating device for insulating the optical cable (200) from the transmission tower.

2. The optical cable suspension device (100) according to claim 1, characterized in that, The second connecting part (130) includes a first connecting end (131) and a second connecting end (132). The first connecting end (131) is connected to the main frame (110), and the second connecting end (132) is provided with a suspension device (133). The suspension device (133) is used to suspend the optical cable (200).

3. The optical cable suspension device (100) according to claim 2, characterized in that, The suspension device (133) includes a hanging ring (1331), an inner twisted wire (1332), and an outer twisted wire (1333). The hanging ring (1331) has a through hole (1331a), through which the optical cable (200) passes. The inner twisted wire (1332) and the outer twisted wire (1333) are wound sequentially outward along the radial direction of the optical cable (200) and the outer twisted wire (1333) is fixedly connected to the hanging ring (1331).

4. The optical cable suspension device (100) according to claim 3, characterized in that, Both the outer strand (1333) and the inner strand (1332) are aluminum-clad steel.

5. The optical cable suspension device (100) according to claim 1, characterized in that, The main frame (110) includes a first connecting plate (111), a second connecting plate (112), and two insulating members (113). The first connecting plate (111) and the second connecting plate (112) both extend along a second direction, and the first connecting plate (111) and the second connecting plate (112) are spaced apart along the first direction. The two insulating members (113) are spaced apart along the second direction, and the two insulating members (113) are fixedly connected at both ends along the first direction to the ends of the first connecting plate (111) and the second connecting plate (112) along the second direction, respectively. The insulating element (113) constitutes the insulating device.

6. The optical cable suspension device (100) according to claim 5, characterized in that, The first connecting end (131) of the second connecting part (130) is fixedly connected to the middle part of the second connecting plate (112), and / or, The first connecting part (120) is fixedly connected to the middle part of the first connecting plate (111).

7. The optical cable suspension device (100) according to claim 6, characterized in that, Both the first connecting plate (111) and the second connecting plate (112) are triangular connecting plates. The two insulating components (113) are respectively connected at the corners of the first connecting end (131) and the second connecting plate (112), and / or, The two insulating components (113) and the first connecting portion (120) are respectively connected to the corner of the first connecting plate (111).

8. The optical cable suspension device (100) according to claim 5, characterized in that, The insulating element (113) includes a ceramic insulator whose outer diameter gradually decreases in a first direction away from the second connection portion (130).

9. The optical cable suspension device (100) according to claim 1, characterized in that, The first connecting part (120) includes at least one U-shaped hanging ring (121) that passes through the middle of the first connecting plate (111) on the main frame (110) and is used to connect to the transmission tower.

10. A transmission tower, characterized in that, include: Tower body, The optical cable suspension device (100) according to any one of claims 1-9 is connected to the tower body.

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