Disassembly-free maintainable power optical cable splicing device

Abstract

The utility model belongs to the field of electric power optical cable splicing, and discloses a disassembly-free maintainable electric power optical cable splicing device, a device main body is composed of a base, an optical fiber connector and a replaceable loop cover or a communication service joint, the optical fiber connector is fixed with the base through a nut, one end of an optical fiber coupler in a shell is connected with an inlet fiber core and an outlet fiber core, and the other end of the optical fiber coupler is connected with the communication service joint. And the other end can be switched to be connected with an optical fiber loop device or a communication unit. During service access, the communication unit is butted with the optical fiber coupler to realize signal transmission; and when the service is returned, only the communication service joint needs to be disassembled and the loop cover needs to be replaced, so that the coupler and the loop device form a closed optical path, and the direct connection state of the fiber core is recovered. According to the device, through the reversible physical connection design, the problem that traditional fiber core leading-out is irreversible is solved, on the premise that the signal transmission stability is not affected, dynamic multiplexing and cyclic utilization of fiber core resources are achieved, the flexibility and the resource utilization rate of a power optical fiber network are remarkably improved, and the long-term operation and maintenance cost is reduced.

Description

A maintenance-free power fiber optic cable splicing device Technical Field

[0001] This utility model belongs to the field of power optical cable splicing technology, specifically relating to a non-disassembly, maintainable power optical cable splicing device. Background Technology

[0002] In today's era, power grid operation and maintenance are making great strides towards greater stability, reliability, intelligence, and accuracy, with various new services constantly emerging and being applied, and the scale of power grid construction continuing to expand. The power fiber optic cable network, which has developed in parallel with this, has reached a considerable scale after more than a decade. However, its architecture is limited to interconnections between substations, making it difficult to extend fiber cores from substations for transmission line services. Currently, many transmission line services, such as transmission line video monitoring systems, have to adopt wireless self-organizing networks for signal transmission and remote operation. Communication links are built between towers through wireless devices at each level, ultimately transmitting signals back to the substation and uploading them to the main station server. The same applies to transmission line conductor temperature monitoring systems, which use conductor temperature measuring devices installed on the towers to connect to a 4G wireless communication module to transmit signals back to the monitoring main station. Furthermore, a series of new transmission line services, such as tower tilt monitoring and online transmission line sag monitoring, also rely on wireless communication for signal transmission. This widespread reliance on wireless communication has exposed many problems in terms of signal stability, transmission rate, security, and cost control.

[0003] To address the challenges of wireless communication, a fiber optic core is typically routed from the optical cable splice box of the power transmission line for service access. While this method overcomes many problems associated with wireless communication, it has inherent limitations. Specifically, this method is irreversible; once the service is decommissioned and no longer used, the fiber optic core cannot be reconnected, resulting in a pointless waste of valuable power fiber optic resources.

[0004] It is evident that using existing optical cable splicing devices makes it impossible to restore fiber cores when services are decommissioned and no longer used, resulting in a serious waste of resources. Summary of the Invention

[0005] This utility model provides a non-disassembly, maintainable power optical cable splicing device to solve the technical problem that when using existing optical cable splicing devices, the fiber core cannot be restored after the service is retired and no longer used, resulting in resource waste.

[0006] To achieve the above objectives, the present invention adopts the following technical content:

[0007] A non-disassembly, maintainable power optical cable splicing device includes a splicing device body;

[0008] The main body of the connecting device includes a base;

[0009] An optical fiber connector is inserted into the base;

[0010] The fiber optic connector includes a nut and a housing;

[0011] The nut is fixed to the base;

[0012] One end of the housing is threadedly connected to the nut through the through hole of the base, and the other end is connected to the loop cover or communication service connector;

[0013] An optical fiber coupler is inserted inside the housing;

[0014] The loop cover includes an end cap for connection to the housing; an optical fiber looper is inserted into the end cap.

[0015] The communication service connector includes a connector body for connecting to the housing; a communication unit is inserted into the connector body.

[0016] One end of the fiber optic coupler is connected to the fiber input core and the fiber output core respectively, and the other end is connected to the fiber optic looper or the communication unit.

[0017] Furthermore, the communication unit adopts a dual-core fiber optic patch cord; one end of the dual-core fiber optic patch cord is snapped into the connector body, and the other end is used to connect to the communication service terminal.

[0018] Furthermore, the communication unit employs a beam splitter; one end of the beam splitter is snapped into the connector body, and the other end is used to connect to the communication service terminal.

[0019] Furthermore, the other end of the optical splitter is connected to the communication service terminal via a single-core optical fiber.

[0020] Furthermore, a rubber gasket is provided between the nut and the housing.

[0021] Furthermore, the base has several pre-drilled holes for installing fiber optic connectors.

[0022] Furthermore, the other end of the housing is provided with a threaded structure, and is connected to the loop cover or the communication service connector through the threaded structure.

[0023] Furthermore, the main body of the connecting device also includes a housing; the housing is fastened and connected to the base.

[0024] Furthermore, a fiber storage tray is provided on the base; the fiber storage tray is located inside the outer shell; the connection part between the optical cable inlet and the optical cable outlet is wound around the fiber storage tray.

[0025] Furthermore, the connecting device body also includes a fastener; the fastener is connected to the bottom of the base.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This invention provides a non-disassembly, maintainable power fiber optic cable splicing device. The main body of the device consists of a base, a fiber optic connector, and replaceable loop covers or communication service connectors. The fiber optic connector is fixed to the base with nuts. One end of the fiber optic coupler inside the housing connects to the incoming and outgoing fiber cores, while the other end can be switched to connect to a fiber optic loopback unit or a communication unit. When a service is connected, the communication unit of the communication service connector interfaces with the fiber optic coupler to achieve signal transmission. When a service is decommissioned, only the communication service connector needs to be removed and the loop cover replaced, allowing the coupler and loopback unit to form a closed optical path, thus restoring the fiber core to a straight-through state. This device, through its reversible physical connection design, solves the problem of irreversible fiber core routing in traditional methods. Without affecting signal transmission stability, it achieves dynamic reuse and recycling of fiber core resources, significantly improving the flexibility and resource utilization of power fiber optic networks and reducing long-term operation and maintenance costs.

[0028] Preferably, in this invention, the dual-core fiber optic patch cord serves as a communication unit, with one end snapped into the connector body and the other end connected to the communication service terminal. This design facilitates quick connection and replacement of the communication service terminal, improving the flexibility and convenience of the communication connection. At the same time, the dual-core design can meet certain communication capacity requirements.

[0029] Preferably, in this invention, the optical splitter serves as a communication unit, with one end snapped into the connector body and the other end connected to the communication service terminal. The optical splitter can divide one optical signal into multiple paths, thereby realizing the distribution of optical signals, meeting the needs of multiple communication service terminals to connect simultaneously, and improving the utilization rate of communication resources.

[0030] Preferably, in this invention, the rubber pad can serve as a buffer and seal, reducing vibration and wear between the nut and the housing, and extending the service life of the device; at the same time, the sealing function can prevent dust, moisture, etc. from entering the device, protecting the internal fiber optic components from the influence of the external environment, and improving the stability and reliability of the device.

[0031] Preferably, in this invention, the pre-drilled holes are used to install fiber optic connectors. The design of multiple pre-drilled holes provides more installation position options, making it convenient to flexibly install multiple fiber optic connectors according to actual needs, meeting the fiber optic connection requirements of different scales, and enhancing the versatility and expandability of the device.

[0032] Preferably, in this invention, the connection to the loop cover or communication service connector is achieved through a threaded structure. This connection method is robust and reliable, and is easy to install and disassemble. At the same time, the threaded structure has a certain degree of sealing, which helps to protect the internal optical fiber connection from external interference.

[0033] Preferably, in this invention, the outer shell is fastened to the base, and the outer shell can protect the internal components of the device, preventing external objects from colliding with or damaging the internal fiber optic connectors and fiber optic components, thereby improving the durability and safety of the device.

[0034] Preferably, in this invention, the fiber storage tray is located inside the outer shell, and the connection part between the fiber inlet and fiber outlet of the optical cable is wound on the fiber storage tray. The fiber storage tray can orderly store excess optical fibers, avoid the optical fibers being messy, facilitate management and maintenance, and at the same time reduce the bending radius of the optical fibers and reduce the loss of the optical fibers.

[0035] Preferably, in this invention, the fastener is connected to the bottom of the base. The fastener can fix the device in a suitable position, prevent the device from shifting during use, ensure the stability and reliability of the device, and ensure the normal operation of the fiber optic connection. Attached Figure Description

[0036] Figure 1 is a structural schematic diagram of a non-disassembly maintainable power optical cable splicing device provided in an embodiment of the present invention;

[0037] Figure 2 is an exploded view of the fiber optic connector of a non-disassembly-free, maintainable power optical cable splicing device provided in an embodiment of this utility model.

[0038] Figure 3 is a top view of the fiber optic connector of a non-disassembly maintainable power optical cable splicing device provided in an embodiment of this utility model;

[0039] Figure 4 is a schematic diagram of the loop cover of a non-disassembly-removable and maintainable power optical cable splicing device provided in an embodiment of the present invention.

[0040] Figure 5 is a top view of the loop cover of a non-disassembly maintainable power optical cable splicing device provided in an embodiment of the present invention;

[0041] Figure 6 is a structural schematic diagram of the dual-core armored optical fiber connector provided in an embodiment of this utility model;

[0042] Figure 7 is a schematic diagram of the structure of the beam splitter connector provided in the embodiment of this utility model;

[0043] Figure 8 is a schematic diagram of the fiber optic coupler provided in an embodiment of the present invention;

[0044] Figure 9 is a structural schematic diagram of the fiber optic looper provided in an embodiment of this utility model;

[0045] Figure 10 is a schematic diagram of the structure of the beam splitter provided in the embodiment of this utility model.

[0046] Figure label:

[0047] 1. Base; 2. Housing; 3. Fiber storage tray; 4. Fiber inlet; 5. Fiber outlet; 6. Inlet fiber core; 7. Outlet fiber core; 8. Fiber optic connector; 9. Pre-drilled holes; 10. Fasteners;

[0048] 11. Nut; 12. Housing; 13. Fiber optic coupler; 14. End cap; 15. Fiber optic looper; 16. Connector body; 17. Dual-core fiber optic patch cord; 18. Optical splitter; 19. Single-core fiber optic cable; 20. Rubber pad. Detailed Implementation

[0049] To make the technical problem solved by this utility model, the technical solution, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] As described in the background section, the current advantage of using fiber optic communication instead of wireless communication lies in its ability to overcome numerous problems exposed by wireless communication in terms of signal stability, transmission rate, security, and cost control. However, the fiber core exit method of fiber optic communication also has the following drawbacks: First, this fiber core exit method is irreversible. Once the service is decommissioned and no longer used, it is impossible to restore the fiber core, resulting in the unnecessary waste of valuable power fiber optic resources. Second, it requires opening the fiber optic splice box and performing a T-connection on one of the fiber cores, which can easily lead to the risk of accidentally disconnecting other operating fiber cores. Third, it usually requires drilling a small hole at the bottom of the fiber optic splice box for the fiber core to exit, which can easily reduce the waterproof and insect-proof performance of the splice box and increase the risk of single point of failure.

[0057] To address the above issues, this embodiment provides a non-disassembly, maintainable power optical cable splicing device. Using this device, routine fiber core inspections can be performed directly at the station during daily maintenance, without wasting fiber core resources. When optical cable services need to be integrated into the transmission line, simply remove the loop cover from the outside and connect the corresponding equipment via a pre-fabricated communication service connector (an LC connector with two armored optical fibers) to complete the service access. The operation is simple, with minimal construction risk; simultaneously, it will not affect other important services in operation, saving time and effort.

[0058] As shown in Figure 1, this embodiment provides a non-disassembly, maintainable power optical cable splicing device, including a splicing device body, wherein the splicing device body consists of a base 1 and a snap-fitted outer shell 2. The base 1 and the outer shell 2 can be connected by bolts; the outer shell 2 is preferably made of aluminum alloy.

[0059] Several pre-drilled holes 9 are provided on the base 1 for installing fiber optic connectors 8. The pre-drilled holes 9 are blind holes, that is, the top surface of the base 1 is a hole and the bottom surface is a plane. When it is necessary to install the fiber optic connector 8, the pre-drilled holes 9 are knocked open from the bottom surface of the base 1 to facilitate subsequent installation.

[0060] As shown in Figures 2 and 3, the fiber optic connector 8 consists of a nut 11 and a housing 12. The nut 11 is sealed and fixed to the base 1 by the housing 12 via a rubber gasket 20. A fiber optic coupler 13 is inserted into the housing 12, with one end connected to the input fiber core 6 and the output fiber core 7 respectively, and the other end selectively connected to a loop cover or communication service connector via a threaded structure. The coupler 13 can be clamped into the housing 12 using an interference fit, or fixed into the housing 12 by adhesive bonding or other methods; both ends of the coupler 13 are designed with female connectors, as shown in Figure 8.

[0061] Among them, fiber core 6 is a fiber core extracted from multiple fiber cores of fiber core 4 in the optical cable; similarly, fiber core 7 is a fiber core extracted from multiple fiber cores of fiber core 5 out of the optical cable.

[0062] When access to services is required, the housing 12 is connected to the communication service connector, which includes a connector body 16. The dual-core fiber optic patch cord 17 or splitter 18 inside the connector body 16 is connected to the fiber optic coupler 13 to realize optical signal splitting transmission.

[0063] For example, as shown in Figure 6, the communication service connector in this embodiment adopts a dual-core armored fiber optic connector, which consists of a connector body 16 and a dual-core fiber optic patch cord 17. One end of the dual-core fiber optic patch cord 17 is fixed in the connector body 16 for connection with the coupler 13. Similarly, the dual-core fiber optic patch cord 17 can be fixed to the connector body 16 by means of snap-fit ​​or glue. The other end of the dual-core fiber optic patch cord 17 is used to connect with the service equipment (communication service terminal).

[0064] For example, as shown in Figure 7, in order to realize the optical cable's splitting function and thus customize different splitting ratios, a single fiber can be led out for GPON service access; where GPON (Gigabit-Capable Passive Optical Network) service is a broadband access technology using a passive optical network architecture. The communication service connector in this embodiment can be a splitter connector; the splitter connector includes a splitter 18 and a single-core optical fiber 19; as shown in Figure 10, one end of the splitter 18 has a two-core structure for connecting to the optical fiber coupler 13; the other end connects to the single-core optical fiber 19, thus realizing the splitting function.

[0065] For example, when using optical splitter 18, it is connected to external equipment through single-core optical fiber 19 to meet the needs of multiple services.

[0066] For example, the connector body 16 includes an axially sliding threaded sleeve, inside which is an inner cylinder. The dual-core fiber optic patch cord 17 or the optical splitter 18 is fixed within the inner cylinder. The inner cylinder and the threaded sleeve can be fitted with a stepped joint to secure the threaded sleeve to the inner cylinder. When connection to the fiber optic connector 8 is required, after the dual-core fiber optic patch cord 17 or the optical splitter 18 is connected to the fiber optic coupler 13, the threaded sleeve is slid up and screwed to connect with the bottom thread of the housing 12, thus connecting the fiber optic connector 8 to the communication service connector. The structure of the threaded sleeve and the inner cylinder can adopt a design similar to the connecting nut and socket of the Risym GX series aviation plug; that is, the connecting nut of the aviation plug is the threaded sleeve in this embodiment, and the socket is the inner cylinder. Furthermore, the bottom of the connector body 16 has an opening design to facilitate communication service access; the opening of the connector body 16 also employs a sealing design, such as applying sealant or installing a sealing ring, to achieve waterproofing and insect prevention.

[0067] As shown in Figures 4 and 5, after the service is returned, the fiber core needs to be restored. This embodiment provides a loop cover, which includes an end cover 14 and an optical fiber return device 15 inserted in the end cover 14. As shown in Figure 9, one end of the optical fiber return device 15 is also a two-core structure and adopts a male connector design for connecting with the optical fiber coupler 13; the other end has two cores connected to give it a loop function.

[0068] The end cap 14 includes an axially sliding threaded sleeve, inside which is an inner cylinder, and the fiber optic recirculator 15 is located within the inner cylinder. When connection with the fiber optic connector 8 is required, after the fiber optic recirculator 15 is plugged into the fiber optic coupler 13, the threaded sleeve is slid up and screwed on to connect with the bottom thread of the housing 12, thus connecting the fiber optic connector 8 to the loop cap. The loop cap not only restores communication but also improves waterproof and insect-proof performance, reducing the risk of single-point failure. In this embodiment, the bottom of the end cap 14 is a fully sealed design. When tightened with the threads of the housing 12, it forms a sealed cavity, thereby ensuring a sealing effect. The structure of the threaded sleeve and inner cylinder of the end cap 14 can also adopt a design similar to the connecting nut and seat of the Risym GX series aviation plug; that is, the connecting nut of the aviation plug is the threaded sleeve in this embodiment, and the seat is the inner cylinder.

[0069] When the service is returned to service, the communication service connector is removed and the loop cover of the built-in fiber optic return device 15 is replaced to form a closed optical path between the fiber optic coupler 13 and the fiber optic return device 15, restoring the straight-through state between the fiber input core 6 and the fiber output core 7.

[0070] In this embodiment, both ends of the fiber optic coupler 13 are designed with female connectors, while the fiber input core 6 and fiber output core 7 that mate with its upper end are designed with male connectors. The fiber optic loopback unit 15, dual-core fiber optic patch cord 17, and optical splitter 18 that mate with its lower end are also designed with male connectors, facilitating connection. In this embodiment, the connection points of the fiber input core 6, fiber output core 7, fiber optic coupler 13, fiber optic loopback unit 15, dual-core fiber optic patch cord 17, and optical splitter 18 all use LC-type connectors, which also facilitates connection.

[0071] For example, in this embodiment, the base 1 is fixed to the fastener 10 in the main body of the splicing device, and the main body of the splicing device is connected to the pole tower by the fastener 10. A fiber storage tray 3 is provided inside the outer casing 2 to store the connection section between the optical fiber inlet 4 and the optical fiber outlet 5. The design of the fiber storage tray 3 facilitates the storage of optical fibers. The outer casing 2 provides physical protection to ensure stable operation of the splicing device in outdoor environments.

[0072] In summary, this utility model provides a non-disassembly, maintainable power optical cable splicing device, which has the following advantages compared to existing optical cable splice boxes:

[0073] First, flexible and efficient resource utilization: Through reversible physical connection design, the problem of irreversibility of traditional fiber core extraction is solved, realizing dynamic reuse and recycling of fiber core resources, significantly improving the flexibility and resource utilization of power fiber optic networks, and reducing long-term operation and maintenance costs.

[0074] Secondly, communication connections are flexible and convenient: Dual-core fiber optic patch cords, as communication units, facilitate quick connection and replacement of communication service terminals, improving the flexibility and convenience of communication connections and meeting certain communication capacity requirements; optical splitters, as communication units, can split one optical signal into multiple paths, allowing multiple communication service terminals to connect simultaneously and improving the utilization rate of communication resources.

[0075] Third, the device is stable and reliable: the rubber pads act as a buffer and seal, reducing vibration and wear between the nut and the housing, extending service life, and preventing dust and moisture from entering, protecting the internal fiber optic components, and improving the stability and reliability of the device.

[0076] Fourth, strong versatility and expandability: The base has multiple pre-drilled holes, providing more installation position options and facilitating the flexible installation of multiple fiber optic connectors to meet the needs of fiber optic connections of different scales, thus enhancing the versatility and expandability of the device.

[0077] Fifth, the connection is firm and sealed: it is connected to the loop cover or communication service connector through a threaded structure, which is firm and reliable, easy to install and disassemble, and has a certain degree of sealing to protect the internal fiber optic connection from interference.

[0078] Sixth, good component protection: The outer shell is snapped into the base, protecting the internal components from damage by external objects and improving the durability and safety of the device.

[0079] Seventh, orderly fiber optic management: The fiber storage tray neatly stores excess fiber optic cables, avoiding disorder and facilitating management and maintenance, reducing fiber bending radius and fiber loss.

[0080] The above embodiments are merely one of the implementation methods to achieve the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model.

Claims

1. A maintenance-free, non-disassembly-removable power optical cable splicing device, characterized in that, The device includes a splicing device body; the splicing device body includes a base (1); an optical fiber connector (8) is inserted into the base (1); the optical fiber connector (8) includes a nut (11) and a housing (12); the nut (11) is fixed to the base (1); one end of the housing (12) is threadedly connected to the nut (11) through a through hole in the base (1), and the other end is connected to a loop cover or a communication service connector; an optical fiber coupler (13) is inserted into the housing (12); the loop cover includes an end cap (14) for connecting to the housing (12); an optical fiber looper (15) is inserted into the end cap (14); the communication service connector includes a connector body (16) for connecting to the housing (12); a communication unit is inserted into the connector body (16); one end of the optical fiber coupler (13) is connected to the fiber inlet core (6) and the fiber outlet core (7) respectively, and the other end is connected to the optical fiber looper (15) or the communication unit.

2. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, The communication unit uses a dual-core fiber optic patch cord (17); one end of the dual-core fiber optic patch cord (17) is snapped into the connector body (16), and the other end is used to connect to the communication service terminal.

3. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, The communication unit uses a beam splitter (18); one end of the beam splitter (18) is snapped into the connector body (16), and the other end is used to connect to the communication service terminal.

4. The maintenance-free power optical cable splicing device according to claim 3, characterized in that, The other end of the optical splitter (18) is connected to the communication service terminal via a single-core optical fiber (19).

5. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, A rubber gasket (20) is provided between the nut (11) and the housing (12).

6. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, The base (1) has several pre-made holes (9) for installing fiber optic connectors (8).

7. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, The other end of the housing (12) is provided with a threaded structure, and is connected to the loop cover or the communication service connector through the threaded structure.

8. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, The main body of the connecting device also includes a housing (2); the housing (2) is fastened to the base (1).

9. The maintenance-free power optical cable splicing device according to claim 8, characterized in that, A fiber storage tray (3) is provided on the base (1); the fiber storage tray (3) is located inside the outer shell (2); the connection part between the optical fiber inlet (4) and the optical fiber outlet (5) is wound around the fiber storage tray (3).

10. The maintenance-free power optical cable splicing device according to claim 1, characterized in that, The main body of the connecting device also includes a fastener (10); the fastener (10) is connected to the bottom of the base (1).

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