Compact optical cable cross-connecting box for double-network and single-network conversion

Abstract

The invention relates to a compact double-network and single-network conversion optical cable cross-connecting box, which comprises an optical cable cross-connecting box shell, two cavities are arranged in the optical cable cross-connecting box shell, and the first cavity and the second cavity are arranged in a shape like a Chinese character'ri 'up and down; wherein when the first cavity is a whole communicated cavity, the optical cable cross-connecting box is used as a single-network 144-core capacity optical cable cross-connecting box, and the whole first cavity is an optical cable distribution area; the longitudinal middle position of the first cavity is provided with a partition plate, the partition plate divides the first cavity into a left cavity and a right cavity which are independent and symmetrical, the optical cable cross-connecting box is used as a left and right double-network physical isolation 60-core capacity optical cable cross-connecting box, and the two independent cavities of the first cavity are respectively independent optical cable distribution areas. According to the compact optical cable cross-connecting box for double-network and single-network conversion, the minimum space resource is utilized, functional materials are reasonably distributed, independent operation and maintenance of double operators are achieved within the standard optical cable cross-connecting box size, and the space utilization rate and the operation and maintenance efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable distribution boxes, and in particular to a compact optical cable distribution box for dual-single network conversion. Background Art

[0002] An optical cable distribution box, also known as an optical cable splitter box, is used to connect the outdoor optical cable signal lines to the optical fiber circuit board, and to split multiple optical fiber signal lines from the optical fiber circuit board to the optical module cards of the optical fiber central backbone switch, so as to realize the access of the optical fiber network. It is mainly used in the new construction projects of 3G / 4G base stations and the broadband access projects of FTTx in the smart city optical fiber network, optical fiber remote extension, remote power supply, etc. All are in the outdoor environment and need to operate independently. It further solves the problem of electromagnetic interference, saves electric energy, reduces emissions, is low-carbon and environmentally friendly, can be applied to different installation methods such as overhead and pole-mounted, and has the characteristics of flexible installation, disassembly and handling. Therefore, it can be widely used in wireless base stations and other occasions.

[0003] At present, most optical cable distribution boxes adopt single-network design or a small number of multi-network designs. Such designs often have the following defects in practical applications: The optical fiber distribution boxes of multi-network operators often adopt a stacked or split design, and the volume exceeds the standard core number specification, making it difficult to adapt to the existing communication base station space layout; The multi-network design has mutual interference in operation and maintenance, and the fault troubleshooting efficiency is low; The physical isolation of the multi-network is missing, and there is a risk of data leakage; The multi-network and single-network cannot be flexibly converted and expanded. When needed, only new optical fiber distribution boxes can be purchased or stacked. Summary of the Invention

[0004] Therefore, the present invention takes "compactness, rationalization, physical isolation, and dual-single conversion" as the core, and solves the problems of "fixed capacity, complex maintenance, and cross-network conflict" of traditional optical fiber distribution boxes through a dual-independent space architecture, modular expansion design, fiber optic jumper-free technology, etc., providing a cost-effective infrastructure solution for today's multi-network integration.

[0005] To solve the above technical problems, the present invention provides a compact double-single network conversion optical cable distribution box, comprising: an optical cable distribution box housing, with a base provided at its lower end. There are two cavities inside the optical cable distribution box housing, namely a first cavity and a second cavity. The first cavity is located at the upper side of the optical cable distribution box housing, and the second cavity is located at the middle position of the optical cable distribution box housing. The first cavity and the second cavity are arranged in a "day" shape vertically. The second cavity serves as an optical cable fixing area; an optical cable fixing plate, which is installed in the second cavity; a first security door, which is hinged to the optical cable distribution box housing; a second security door, which is hinged to the optical cable distribution box housing, and the second security door and the first security door form a pair of opening doors structure to cover the opening position of the first cavity; a common door, which is hinged to the optical cable distribution box housing, and the common door covers the second cavity. The first security door, the second security door and the common door are arranged in a "pin" shape. Among them, when the first cavity is a whole connected cavity, the optical cable distribution box is used as a single network 144-core capacity optical distribution box, and the first cavity as a whole is an optical cable distribution area; a partition board is provided at the longitudinal middle position of the first cavity, and the partition board divides the first cavity into two independent and symmetrical cavities on the left and right. The optical cable distribution box is used as an optical distribution box with a capacity of 60 cores for each of the left and right double networks with physical isolation, and the two independent cavities of the first cavity are respectively independent optical cable distribution areas.

[0006] The compact double-single network conversion optical cable distribution box of the present invention adopts an overall compact and double-opening design on the left and right, which can prevent crosstalk between different network signals in the physical isolation mode; a common door is designed at the bottom for the area where the optical cable fixing plate is located; the partition board in the middle of this optical distribution box can also be removed and used as a single network 144-core optical distribution box; this optical distribution box is also equipped with functional quick-release modules such as a compact 48-core optical splitter module, a 12-core fusion and distribution mini-integrated module, and a 72-core direct fusion tray module, which can ensure stable and reliable optical fiber fusion quality.

[0007] The compact double-single network conversion optical cable distribution box of the present invention can improve the utilization rate of optical cables, reduce the overall solution and the cost of later maintenance in a limited space resource and a complex communication environment. With the innovative design concept of double-single network conversion, it provides a cost-effective infrastructure solution for multi-network convergence.

[0008] In an embodiment of the present invention, each of the optical cable distribution areas includes: an adapter parking position, an optical splitter module group, a main line tray, and a distribution tray.

[0009] In one embodiment of the present invention, 3 optical splitter module frames are installed in the first cavity. The partition plate is disposed opposite to the optical splitter module frame at the middle position. The 3 optical splitter module frames are on the same straight line. When the optical cable cross-connect box is an optical cross-connect box with a single-network 144-core capacity, the optical splitter module group includes three groups of 6 PLC 1*8 cassette optical splitters; when the optical cable cross-connect box is an optical cross-connect box with a dual-network physical isolation and each has a 60-core capacity, the optical splitter module group includes two groups of 6 PLC 1*8 cassette optical splitters and one group of 4 PLC 1*8 cassette optical splitters. The cassette optical splitters are installed in the optical splitter module frames.

[0010] In one embodiment of the present invention, when the optical cable cross-connect box is an optical cross-connect box with a single-network 144-core capacity, the main line tray includes two groups of 12-core mini integrated fusion and distribution modules, and the distribution tray includes twelve groups of 12-core mini integrated fusion and distribution modules; when the optical cable cross-connect box is an optical cross-connect box with a dual-network physical isolation and each has a 60-core capacity, the main line tray includes one group of 12-core mini integrated fusion and distribution modules, and the distribution tray includes five groups of 12-core mini integrated fusion and distribution modules.

[0011] In one embodiment of the present invention, when the optical cable cross-connect box is an optical cross-connect box with a single-network 144-core capacity, a 72-core direct fusion disk module is installed at one end in the length direction of the optical cable fixing plate; when the optical cable cross-connect box is an optical cross-connect box with a dual-network physical isolation and each has a 60-core capacity, 72-core direct fusion disk modules are installed at both ends in the length direction of the optical cable fixing plate.

[0012] In one embodiment of the present invention, when the optical cable cross-connect box is an optical cross-connect box with a single-network 144-core capacity, 12 corner pieces are installed on the optical cable fixing plate; when the optical cable cross-connect box is an optical cross-connect box with a dual-network physical isolation and each has a 60-core capacity, 10 corner pieces are installed on the optical cable fixing plate.

[0013] In one embodiment of the present invention, a vertical partition door frame and a horizontal partition door frame are installed in the first cavity. The partition plate is installed on the vertical partition door frame and the horizontal partition door frame.

[0014] In one embodiment of the present invention, a plurality of fiber winding cylinders and a plurality of wire rings are installed in the first cavity. The plurality of fiber winding cylinders and the plurality of wire rings are used for connecting the optical fibers in the optical splitter module group to the distribution tray.

[0015] In one embodiment of the present invention, three-point locks are installed on both the first anti-theft door and the second anti-theft door, and an anti-theft lock is installed on the common door.

[0016] In one embodiment of the present invention, sealing strips are installed on the first anti-theft door, the second anti-theft door and the common door.

[0017] The compact optical cable junction box for dual-network conversion of the present invention has the following beneficial effects compared with the prior art: 1. The optical cable junction box of the present invention adopts a compact, left and right double-door design, which divides the internal space into two completely physically independent areas, forming a dual-network structure. This physical isolation method eliminates the crosstalk between different network signals from the root, greatly improving the stability and security of network communications. Whether it is a confidential communication network with extremely high confidentiality requirements or a large enterprise network that attaches great importance to data security, it can provide reliable protection.

[0018] 2. The optical cable junction box of the present invention has a left-right separated structure, which can be used in parallel for network wiring, welding and maintenance without interfering with each other. During daily maintenance or troubleshooting, the staff can quickly locate the target network area, which greatly improves work efficiency and effectively reduces the risk of affecting other networks due to operational errors.

[0019] 3. The optical cable junction box of the present invention has a separate door in the area where the optical cable fixing plate is located as a public part. This design not only ensures the independence of the fixing plate area, facilitates centralized management of key operations such as optical cable fixing and welding, but also does not interfere with the normal operation of the left and right dual network areas. When the optical cable fixing plate needs to be operated, only this independent door needs to be opened without opening the entire junction box, which significantly reduces the disturbance to the internal network wiring.

[0020] 4. The optical cable junction box of the present invention can be used as a single-network 144-core optical junction box by removing the partition plate from the initial state of separating the two compartments and merging them into a unified operating space. The junction box has a standard 144-core ultra-large capacity design, which can easily accommodate multiple optical cables to access at the same time, and through the internal precise fusion and wiring modules, it can realize the flexible distribution and efficient scheduling of optical fibers. It provides sufficient space for the connection and distribution of large-scale communication networks, and strongly supports the continuous expansion and upgrading of communication networks.

[0021] 5. The optical cable junction box of the present invention is equipped with advanced 48-core optical splitter modules, 12-core mini integrated fusion module and 72-core direct fusion tray and other quick-release modules with jumper-free technology. These modules have the functions of optical fiber positioning and connection, which can ensure the stable and reliable quality of optical fiber fusion, low insertion loss and small return loss. At the same time, the installation, disassembly and replacement of the quick-release module are extremely convenient, which greatly improves the convenience and efficiency of maintenance work.

[0022] 6. The optical cable junction box of the present invention is provided with a fiber winding drum, a wire ring and an adapter parking position (14) and other devices inside, which can orderly organize and manage the optical cables, pigtails and jumpers. It ensures that the cables are neatly and standardizedly wired in the box to avoid cross-entanglement, effectively reduces the probability of failure caused by cable confusion, and provides convenience for staff in daily inspection and maintenance.

[0023] The compact dual-single network conversion optical cable distribution box of the present invention utilizes the smallest space resources, rationally distributes functional materials, and realizes independent operation and maintenance by two operators within the size of a standard optical cable distribution box, which is a compact dual-single network conversion optical cable distribution box that improves space utilization and operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to specific embodiments of the present invention in conjunction with the drawings, wherein Figure 1 is a schematic structural diagram of the compact dual-single network conversion optical cable distribution box in the preferred embodiment of the present invention Figure 1 ; Figure 2 is a front view of the compact dual-single network conversion optical cable distribution box in the preferred embodiment of the present invention; Figure 3 is a left view of the compact dual-single network conversion optical cable distribution box in the preferred embodiment of the present invention; Figure 4 is a division diagram of the compact dual-single network conversion optical cable distribution box in the preferred embodiment of the present invention; Figure 5 is a schematic structural diagram of the compact dual-single network conversion optical cable distribution box under a dual network in the preferred embodiment of the present invention; Figure 6 is a schematic structural diagram of the compact dual-single network conversion optical cable distribution box under a single network in the preferred embodiment of the present invention; Figure 7 is a schematic division structure diagram of the compact dual-single network conversion optical cable distribution box under a dual network in the preferred embodiment of the present invention; Figure 8 is a schematic division structure diagram of the compact dual-single network conversion optical cable distribution box under a single network in the preferred embodiment of the present invention; Figure 9 is a front view of the 12-core miniaturized fusion and distribution integrated module in the preferred embodiment of the present invention; Figure 10 is a top view of the 12-core miniaturized fusion and distribution integrated module in the preferred embodiment of the present invention; Figure 11 is a left view of the 12-core miniaturized fusion and distribution integrated module in the preferred embodiment of the present invention; Figure 12 is an isometric view of the 12-core miniaturized fusion and distribution integrated module in the preferred embodiment of the present invention; Figure 13 is a front view of the 48-core optical splitter module in the preferred embodiment of the present invention; Figure 14 is a left view of the 48-core optical splitter module in the preferred embodiment of the present invention; Figure 15 It is a side view of the 48-core optical splitter module in the preferred embodiment of the present invention; Figure 16 It is an isometric side view of the 48-core optical splitter module in the preferred embodiment of the present invention.

[0025] Explanation of the reference numerals in the drawings of the specification: 1 - Outer shell of the optical cable cross-connect box; 2 - Partition board; 3 - Vertical partition door frame; 4 - Horizontal partition door frame; 5 - Optical cable fixing plate; 6 - Corner piece; 7 - First anti-theft door; 8 - Second anti-theft door; 9 - Common door; 10 - Three-point lock; 11 - Sealing strip; 12 - 72-core direct fusion tray module; 13 - 48-core optical splitter module; 1301 - Optical splitter module frame; 1302 - PLC cassette optical splitter; 14 - Adapter parking position; 15 - 12-core miniaturized fusion and distribution integrated module; 16 - Fiber winding cylinder; 17 - Wire loop. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited do not limit the present invention.

[0027] Refer to Figures 1-8As shown in the figure, the compact double-single network conversion optical cable cross-connect box of the present invention includes: an optical cable cross-connect box housing 1, with a base provided at its lower end. There are two cavities inside the optical cable cross-connect box housing 1, namely a first cavity and a second cavity. The first cavity is located on the upper side of the optical cable cross-connect box housing 1, and the second cavity is located in the middle position of the optical cable cross-connect box housing 1. The first cavity and the second cavity are arranged in a "day" shape vertically. The second cavity serves as an optical cable fixing area; an optical cable fixing plate 5, which is installed in the second cavity; a first security door 7, which is hinged to the optical cable cross-connect box housing 1; a second security door 8, which is hinged to the optical cable cross-connect box housing 1, and the second security door 8 and the first security door 7 form a double-leaf door structure for covering the opening position of the first cavity; a common door 9, which is hinged to the optical cable cross-connect box housing 1, and the common door 9 covers the second cavity. The first security door 7, the second security door 8 and the common door 9 are arranged in a "pin" shape. Among them, when the first cavity is a whole connected cavity, the optical cable cross-connect box is used as a single-network 144-core capacity optical cross-connect box, and the first cavity as a whole is an optical cable distribution area; a partition plate 2 is provided at the longitudinal middle position of the first cavity. The partition plate 2 divides the first cavity into two independent and symmetrical cavities on the left and right. The optical cable cross-connect box is used as an optical cross-connect box with a capacity of 60 cores for each of the left and right double-network physical isolations. The two independent cavities of the first cavity are respectively independent optical cable distribution areas. Its overall structure mainly includes: the optical cable distribution areas (one, two) respectively include: optical distribution module groups, adapter parking positions, main distribution tray modules; detachable partition plates for distinguishing the optical cable distribution areas, a common optical cable fixing area, security doors for three independent areas; and others include an optical cross-connect box housing, an optical cross-connect box base, sheet metal support parts, metal fasteners, optical cable sorting parts, etc.

[0028] A double-leaf door structure with left and right opening on the front corresponds to the operation spaces of the first operator and the second operator respectively. Below the double-leaf door on the front is an independent door corresponding to the operation area for optical cable fixing. All doors are equipped with independent door locks (the double-leaf door on the left and right is upgraded to a three-point lock), and waterproof sealing strips are configured on the edges of the doors to ensure that the protection level of the optical cross-connect box body can reach IP65.

[0029] The optical cable distribution areas all include: adapter parking positions 14, optical distribution module groups, main line trays and distribution trays.

[0030] In the above structure, 3 optical splitting module frames 1301 are installed in the first cavity. The partition plate 2 is disposed opposite to the optical splitting module frame 1301 at the middle position. The 3 optical splitting module frames 1301 are on the same straight line. When the optical cable cross-connect box is an optical cross-connect box with a single network capacity of 144 cores, the optical splitting module group includes three groups of 6 PLC 1*8 cassette optical splitters 1302; when the optical cable cross-connect box is an optical cross-connect box with a capacity of 60 cores for each of the two physically isolated networks, the optical splitting module group includes two groups of 6 PLC 1*8 cassette optical splitters 1302 and one group of 4 PLC 1*8 cassette optical splitters 1302. The cassette optical splitters 1302 are installed in the optical splitting module frames 1301. The optical splitting module group is as shown in Figures 12-16 shown.

[0031] In the above structure, when the optical cable cross-connect box is an optical cross-connect box with a single network capacity of 144 cores, the main line tray includes two groups of 12-core mini integrated fusion and distribution modules 15, and the distribution tray includes twelve groups of 12-core mini integrated fusion and distribution modules 15; when the optical cable cross-connect box is an optical cross-connect box with a capacity of 60 cores for each of the two physically isolated networks, the main line tray includes one group of 12-core mini integrated fusion and distribution modules 15, and the distribution tray includes five groups of 12-core mini integrated fusion and distribution modules 15. The 12-core mini integrated fusion and distribution module 15 is as shown in Figures 9-12 shown.

[0032] In the above structure, when the optical cable cross-connect box is an optical cross-connect box with a single network capacity of 144 cores, one end of the optical cable fixing plate 5 in the length direction is installed with a 72-core direct fusion disk module 12; when the optical cable cross-connect box is an optical cross-connect box with a capacity of 60 cores for each of the two physically isolated networks, both ends of the optical cable fixing plate 5 in the length direction are installed with 72-core direct fusion disk modules 12.

[0033] In the above structure, when the optical cable cross-connect box is an optical cross-connect box with a single network capacity of 144 cores, 12 corner pieces 6 are installed on the optical cable fixing plate 5; when the optical cable cross-connect box is an optical cross-connect box with a capacity of 60 cores for each of the two physically isolated networks, 10 corner pieces 6 are installed on the optical cable fixing plate 5.

[0034] In the above structure, a vertical partition door frame 3 and a horizontal partition door frame 4 are installed in the first cavity. The partition plate 2 is installed on the vertical partition door frame 3 and the horizontal partition door frame 4. A number of fiber winding cylinders 16 and a number of wire loops 17 are installed in the first cavity. The number of fiber winding cylinders 16 and the number of wire loops 17 are used for connecting the optical fibers in the optical splitting module group to the distribution tray.

[0035] In the above structure, three-point locks 10 are installed on both the first security door 7 and the second security door 8. An anti-theft lock is installed on the common door 9. Sealing strips 11 are installed on the first security door 7, the second security door 8 and the common door 9.

[0036] In the state of dual networks, the working states of the internal functional materials in the optical cable distribution box are as follows (only the state of one network is described, and the other network is the same): The main optical cable enters this optical cable distribution box and enters the network communication wiring area through the optical cable fixing plate. There are 6 12-core mini integrated fusion and distribution modules, 1 as the main line fusion and distribution tray, and 5 as the distribution line fusion and distribution trays; There is 1 set of 48-core optical splitter modules and 2 PLC 1*8 box-type optical splitters at the upper part of the optical cable distribution box. These optical fibers are connected to the distribution line fusion and distribution trays through wire loops and fiber winding cylinders, and the remaining optical fibers can be placed in the parking positions.

[0037] In the state of single network, the working states of the internal functional materials in the optical cable distribution box are as follows: The main optical cable enters this optical cable distribution box and enters the network communication wiring area through the optical cable fixing plate. There are 14 12-core mini integrated fusion and distribution modules, 2 as the main line fusion and distribution trays, and 12 as the distribution line fusion and distribution trays; There are 3 sets of 48-core optical splitter modules at the upper part of the optical cable distribution box. These optical fibers are connected to the distribution line fusion and distribution trays through wire loops and fiber winding cylinders, and the remaining optical fibers can be placed in the parking positions on both sides.

[0038] The compact dual-single network conversion optical cable distribution box of the present invention includes: the optical cable distribution box shell (including the base), anti-theft doors (left and right), common door, three-point lock, sealing strip, partition board, partition door frames (vertical and horizontal), optical cable fixing plate, 72-core direct fusion tray module, 12-core mini integrated fusion and distribution module, fiber winding cylinder, 48-core optical splitter module, adapter parking position, wire loop, etc. Its external dimensions are 1035*560*308mm, with the capacity of a standard 144-core conventional metal optical cable distribution box. In the initial state, the capacity of each of the left and right dual networks is physically isolated at 60 cores, and in the later stage, the partition board of the conversion and removal materials can be combined into a unified 144-core operation space.

[0039] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A compact optical cable distribution box for double-single network conversion, characterized in that, Including: An optical cable distribution box housing, with a base provided at its lower end. There are two cavities inside the optical cable distribution box housing, namely a first cavity and a second cavity. The first cavity is located at the upper side of the optical cable distribution box housing, and the second cavity is located in the middle position of the optical cable distribution box housing. The first cavity and the second cavity are arranged in a "day" shape vertically. The second cavity serves as an optical cable fixing area. An optical cable fixing plate, which is installed inside the second cavity. A first security door, which is hinged to the optical cable distribution box housing. A second security door, which is hinged to the optical cable distribution box housing, and the second security door and the first security door form a pair of opening doors structure to cover the opening position of the first cavity. A common door, which is hinged to the optical cable distribution box housing, and the common door covers the second cavity. The first security door, the second security door and the common door are arranged in a "pin" shape. Among them, when the first cavity is a whole connected cavity, the optical cable distribution box is used as a single-network 144-core capacity optical distribution box, and the whole first cavity is an optical cable distribution area. A partition board is provided at the longitudinal middle position of the first cavity. The partition board divides the first cavity into two independent and symmetrical cavities on the left and right. The optical cable distribution box is used as an optical distribution box with a capacity of 60 cores for each of the left and right double-network physical isolations. The two independent cavities of the first cavity are respectively independent optical cable distribution areas.

2. The compact double-single network conversion optical cable distribution box according to claim 1, wherein: Each of the optical cable distribution areas includes: adapter docking positions, optical splitter module groups, main line trays and distribution trays.

3. The compact optical cable cross-connect box for dual single-network conversion according to claim 2, wherein: There are 3 optical splitter module frames installed inside the first cavity. The partition board is disposed opposite to the optical splitter module frame at the middle position. The 3 optical splitter module frames are on the same straight line. When the optical cable distribution box is a single-network 144-core capacity optical distribution box, the optical splitter module group includes three groups of 6 PLC 1*8 box-type optical splitters; when the optical cable distribution box is an optical distribution box with a capacity of 60 cores for each of the left and right double-network physical isolations, the optical splitter module group includes two groups of 6 PLC 1*8 box-type optical splitters and one group of 4 PLC 1*8 box-type optical splitters. The box-type optical splitters are installed inside the optical splitter module frames.

4. The compact dual-single network conversion optical cable distribution box according to claim 2, characterized in that: When the optical cable distribution box is a single-network 144-core capacity optical distribution box, the main line tray includes two groups of 12-core miniaturized fusion and distribution integrated modules, and the distribution tray includes twelve groups of 12-core miniaturized fusion and distribution integrated modules; when the optical cable distribution box is an optical distribution box with a capacity of 60 cores for each of the left and right double-network physical isolations, the main line tray includes one group of 12-core miniaturized fusion and distribution integrated modules, and the distribution tray includes five groups of 12-core miniaturized fusion and distribution integrated modules.

5. The compact dual-single network conversion optical cable distribution box according to claim 1, characterized in that: When the optical cable distribution box is a single-network 144-core capacity optical distribution box, a 72-core direct fusion disk module is installed at one end in the length direction of the optical cable fixing plate; when the optical cable distribution box is an optical distribution box with a capacity of 60 cores for each of the left and right double-network physical isolations, 72-core direct fusion disk modules are installed at both ends in the length direction of the optical cable fixing plate.

6. The compact dual-single network conversion optical cable distribution box according to claim 5, characterized in that: When the optical cable distribution box is a single-network 144-core capacity optical distribution box, 12 corner pieces are installed on the optical cable fixing plate; when the optical cable distribution box is an optical distribution box with a capacity of 60 cores for each of the left and right double-network physical isolations, 10 corner pieces are installed on the optical cable fixing plate.

7. The compact dual-single network conversion optical cable distribution box according to claim 1, characterized in that: A vertical partition doorframe and a horizontal partition doorframe are installed in the first cavity, and the partition board is installed on the vertical partition doorframe and the horizontal partition doorframe.

8. The compact dual-single network conversion optical cable distribution box according to claim 2, characterized in that: A number of fiber winding cylinders and a number of wire rings are installed in the first cavity, and the number of fiber winding cylinders and the number of wire rings are used to connect the optical fibers in the optical distribution module group to the wiring tray.

9. The compact optical cable cross-connect box for dual single-network conversion according to claim 1, wherein: Three-point locks are installed on both the first anti-theft door and the second anti-theft door, and an anti-theft lock is installed on the common door.

10. The compact dual-single network conversion optical cable distribution box according to claim 9, wherein: Sealing strips are installed on the first anti-theft door, the second anti-theft door and the common door.

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