Rail type optical cable fiber core switching device and method

Abstract

This invention relates to a track-mounted optical fiber core switching device and method, belonging to the field of optical fiber core testing technology. Technical solution: Multiple fiber cores at the optical distribution end are respectively inserted into the front female opening of the fixed connecting flange at the top of the corresponding linear track. The pigtail end of the test end is equipped with a connector, which is fixed to a sliding seat. The pigtail end of the test end can be inserted into the back female opening of the fixed connecting flange. The sliding seat is equipped with a switching handle. By using the switching handle, the sliding seat slides along a linear track towards the fixed connecting flange at the top of the track, inserting the pigtail of the test end into the back female opening of the fixed connecting flange, thus completing the connection between the pigtail of the test end and a fiber core of the optical distribution end. The test core is then tested using testing equipment connected to the test end. This invention is convenient to operate, precise and efficient, significantly reduces labor costs, has high testing accuracy, effectively prevents hidden faults, has strong adaptability, and is easy to install.

Description

Technical Field

[0001] This invention relates to a track-mounted optical fiber core switching device and method, belonging to the field of optical fiber core testing technology. Background Technology

[0002] As a critical national infrastructure sector, the power industry is rapidly advancing its digitalization and networking. Core facilities such as substations, distribution automation systems, and new energy monitoring platforms are gradually connecting to the internet, leading to an exponential increase in the number and types of exposed assets (such as industrial control equipment and data acquisition servers). Statistics show that a provincial power company can collect over 100,000 exposed data entries per month, covering multiple dimensions such as IP addresses, open ports, and protocol types. However, data collected using tools like FOFA and Hunter exhibits significant redundancy, with a duplication rate as high as 30%-50%. Grassroots units must manually compare historical Excel ledgers, meticulously screening for new risk points, processing tens of thousands of data entries in an average of 3-5 hours. Furthermore, human error can easily lead to missed detection of high-risk ports (such as unauthorized remote management port 3389). In addition, the dynamic expansion of power asset categories (such as the addition of photovoltaic monitoring systems and charging pile management platforms) necessitates manual reconstruction of traditional Excel databases, making it difficult to adapt to business changes and severely hindering the State Grid Corporation's goal of "real-time perception and rapid response" in cybersecurity.

[0003] The power communication network is the "neural network" of the new power system, carrying critical production operations such as power grid dispatch automation and protection and security control. Its safe and stable operation is directly related to the power supply reliability of the power grid. Optical fiber cores, as the underlying core support of the power communication network, are the "lifeline" for data transmission of various critical services. The quality of their operation and maintenance directly determines the stability and efficiency of the power communication network. Scientific management and efficient operation and maintenance of optical fiber resources are crucial for ensuring redundant backup of power communication links and preventing communication interruption risks.

[0004] Currently, the core aspects of optical fiber core maintenance include core testing, fault location, and optical path switching. Among these, core testing is the fundamental operation for core resource scheduling, fault handling, and redundancy backup. Currently, optical fiber core testing mainly relies on manual operation, supplemented by testing equipment such as OTDRs, and is widely used in various fields such as power, telecommunications operators, and railway communications. On-site optical fiber core testing methods are mostly manual plug-and-play, requiring two maintenance personnel to work together. One person connects a test pigtail to an idle core flange on the fiber optic distribution frame, while the other person turns on the OTDR to perform the test after the first person has connected the fiber optic distribution frame. After the test is completed, the first person informs the first person, who then removes the test pigtail from the idle core flange on the fiber optic distribution frame and inserts it into a second idle core flange. The two maintenance personnel repeat this process until all idle cores on the fiber optic distribution frame of the communication site have been tested. This workflow method is cumbersome and inefficient, requiring manual insertion and removal of each fiber core, multi-person collaboration, and is time-consuming. Furthermore, its testing accuracy is limited, failing to accurately detect hidden defects such as dust ingress into the flanges, which can easily create hidden dangers for the stable operation of optical cables. With the expansion of power communication networks and the surge in the number of communication sites, the number of optical fiber cores has increased significantly. Traditional fiber core switching and testing methods can no longer meet the needs of efficient operation and maintenance. The workload of testing optical fiber cores at a single communication site is substantial, especially in large-scale fiber core testing scenarios such as spring and autumn inspections, where the maintenance pressure is particularly prominent.

[0005] To solve the above problems, some people have designed a mechanical cantilever intelligent optical fiber matching device, which uses a mechanical cantilever structure to realize optical path switching. The specific technical solution is as follows: (1) Structural composition: It mainly consists of a fixed bracket, a mechanical cantilever assembly, an optical distribution terminal interface group, a spare docking interface group, a simple operation button and a dustproof assembly. The overall layout is semi-integrated. The fixed bracket adopts a standardized design and can be fixed in the optical distribution cabinet; the mechanical cantilever assembly is the core execution component, which adopts a single cantilever or double cantilever mechanical structure. The fiber core docking connector is fixed at the end of the cantilever, which can realize single core docking switching; the optical distribution terminal interface group and the spare docking interface group are fixed on both sides of the bracket, and both adopt standard interfaces that are compatible with optical fiber cores; there is no integrated blind zone pigtail assembly. (2) Working principle: When fiber core switching or redundancy protection switching is required, the maintenance personnel issue an instruction, and then the mechanical arm drives the fiber core connector to detach from the optical distribution terminal and rotate to the position of the spare docking interface group to complete the docking, realize the switching between the running fiber core and the redundant fiber core, and ensure the stability of communication services. (3) Applicable Scenarios: This device is mainly suitable for power distribution communication network scenarios with abundant fiber core resources. Its core purpose is to test and switch maintenance related to fiber core resource redundancy protection. Its original design intention is to protect the operating fiber core in a redundant manner by occupying multiple fiber cores, so as to ensure the stable transmission of key services of power distribution communication network. However, the device has the following technical problems: ① High cost, not suitable for large-scale batch application: The existing mechanical cantilever intelligent optical distribution equipment has a high price per unit. The operation and maintenance of power communication network requires the batch deployment of fiber core switching devices at a large number of communication sites. The high equipment cost will significantly increase the overall operation and maintenance investment. Therefore, it is inevitable that the device cannot be applied on a large scale and can only be used for pilot use at a small number of core sites, which cannot meet the cost requirements of large-scale operation and maintenance of power communication network. ② Large equipment size, deployment is significantly limited by space: The mechanical cantilever components and semi-distributed layout design of the existing mechanical cantilever intelligent optical distribution result in a large overall size of the equipment, and the mechanical cantilever needs to reserve enough space for extension and rotation to work normally. However, the space in the optical distribution cabinets at power communication sites is limited. Most site cabinets are already densely packed with various communication equipment, leaving little room for future installations. Furthermore, the installation space at some small outdoor communication sites is even smaller, making it impossible to meet the installation and operation space requirements of this device. Therefore, this inevitably leads to significant deployment difficulties, making it unsuitable for the spatial conditions of most power communication sites, severely limiting its deployment range and drastically reducing its practicality. ③ It requires a large amount of redundant optical fiber core resources, making it unsuitable for the current state of the power communication network backbone: The original design of existing mechanical cantilever intelligent optical distribution systems was to protect operating fiber cores through redundancy by occupying multiple fiber cores. Its normal operation relies on a large amount of redundant fiber core resources as backup connection carriers.However, the core characteristic of the power communication network backbone is the scarcity of fiber core resources. The backbone optical cable mainly carries critical services such as power grid dispatch automation and protection and security control, and the fiber core utilization rate is extremely high. The number of idle fiber cores that can be used for redundant protection is limited, which cannot meet the device's demand for a large number of redundant fiber cores. Therefore, the device is inevitably unable to adapt to the current situation of fiber core resources in the power communication network backbone and cannot be widely used in the backbone network. It can only be adapted to a few distribution communication network scenarios with sufficient fiber core resources, and its scope of application is extremely limited. Summary of the Invention

[0006] This invention proposes a track-type optical fiber core switching device and method, which is convenient, precise and efficient, significantly reduces labor costs, has high testing accuracy, can effectively prevent hidden faults, has a stable structure, strong adaptability, is easy to install, and is suitable for large-scale operation and maintenance. It solves operation and maintenance pain points, improves operation and maintenance level, and solves the above-mentioned technical problems existing in the prior art.

[0007] The technical solution of this invention is: A track-mounted optical fiber core switching device includes an optical distribution end, a testing end, a switching track, and an optical path switching mechanism. The switching track comprises a linear track, a sliding seat, and a connecting track. Multiple linear tracks are arranged parallel to each other, and their bottom ends are connected together via the connecting track. The sliding seat can slide on the linear tracks and the connecting track. The optical path switching mechanism includes a switching handle, a fixed connecting flange, and a connector. The fixed connecting flange is fixed to the top of the linear track and has a double-sided female connector structure. The ends of multiple fiber cores of the optical distribution end are respectively inserted into the front female connector of the fixed connecting flange at the top of the corresponding linear track. The pigtail of the testing end is provided with a connector, and the pigtail of the testing end is fixed to the sliding seat via the connector. The end of the pigtail of the testing end can be inserted into the back female connector of the fixed connecting flange. A switching handle is provided. By using the switching handle, the sliding seat slides along a straight track towards the fixed connection flange at the top of the straight track. The pigtail at the test end of the sliding seat is inserted into the female opening on the reverse side of the fixed connection flange, completing the connection between the pigtail at the test end and a fiber core. The test equipment connected to the test end then tests this fiber core. After testing one fiber core, the switching handle drives the sliding seat to slide away from the top fixed connection flange along the straight track, and then slides along another straight track via the connecting track at the bottom of the straight track. The pigtail at the test end of the sliding seat is inserted into the female opening on the reverse side of the fixed connection flange on this straight track, completing the connection between the pigtail at the test end and another fiber core. The test equipment connected to the test end then tests this fiber core. This process is repeated to complete the testing of all fiber cores.

[0008] Furthermore, after the sliding seat is replaced with a linear track via the connecting rail, the test end fiber optic cable on the sliding seat faces the fixed connecting flange on the replaced linear track. The measures taken are well-known and commonly used in the art, for example: the connector can rotate on the sliding seat to change direction; rotating the connector 180 degrees on the sliding seat changes the orientation of the test end fiber optic cable to match the fixed connecting flange that needs to be inserted. Alternatively: a sliding seat turning branch is provided on the connecting rail.

[0009] Furthermore, the sliding seat is equipped with a mechanical positioning mechanism. When the sliding seat slides to the docking position of the fixed connection flange, it locks and positions itself to prevent sliding deviation and ensure the docking accuracy of the interface. The mechanical positioning mechanism is a known and commonly used one, such as a positioning pin and limit groove positioning mechanism. The positioning pin is set on both sides of the sliding seat, and the limit groove is set on the linear track. When the sliding seat slides to the docking position, the positioning pin engages with the limit groove to achieve precise positioning and prevent sliding deviation. The mechanical positioning principle of railway turnouts can also be used to improve the stability and accuracy of switching.

[0010] Furthermore, the front female port of the fixed connection flange is inserted into the fiber core connector at the end of the optical distribution fiber core; the reverse female port of the fixed connection flange is inserted into the pigtail connector at the end of the test fiber.

[0011] Furthermore, the optical distribution end, testing end, switching track, and optical path switching mechanism are integrated into the same housing, with an integrated design that reduces space occupation and facilitates installation and operation; the housing is equipped with a control panel, and the switching handle is located on the control panel, without complicated control buttons, making it easy for front-line maintenance personnel to get started quickly.

[0012] Furthermore, the test end is a pigtail, one end of which is connected to the connector on the sliding seat via a pigtail coil, and the other end is connected to the test equipment.

[0013] Furthermore, one end of the optical distribution fiber core is connected to a fixed connection flange, and the other end, after being reserved with sufficient length, can be connected to an empty fiber core on the optical fiber distribution frame.

[0014] A method for switching optical fiber cores on a track-mounted cable, using the aforementioned switching device, includes the following steps: The test end is a pigtail, one end of which is connected to a connector on a sliding seat, and the other end is connected to a testing device; an optical distribution end fiber core is inserted into the front female opening of each fixed connection flange; a switching handle drives the sliding seat, which carries the end of the test end pigtail along a straight track towards the top fixed connection flange, inserting the pigtail of the test end into the reverse female opening of the fixed connection flange, thus completing the connection between the pigtail of the test end and an optical distribution end fiber core; the fiber core is then tested using the testing device connected to the test end; after testing one fiber core, the switching handle drives the sliding seat to slide away from the top fixed connection flange on the straight track, and then slides along the connecting track at the bottom of the straight track onto another straight track, inserting the pigtail of the test end into the reverse female opening of the fixed connection flange on that straight track, thus completing the connection between the pigtail of the test end and another optical distribution end fiber core; the fiber core is then tested using the testing device connected to the test end; this process is repeated to complete the testing of all fiber cores.

[0015] The key points of this invention are: adopting a purely physical track-type switching optical path to achieve precise switching of multiple cores, solving the pain points of cumbersome operation and low efficiency of existing manual testing methods, as well as the pain points of high cost, large size and large number of redundant fiber cores required by mechanical cantilever intelligent optical distribution. It is convenient to operate, cost controllable, highly adaptable and can meet the needs of large-scale operation and maintenance.

[0016] Design terminology for this invention: (1) Optical fiber core: The glass fiber inside the optical cable is used to transmit optical signals and is the core carrier of optical signal transmission. In this invention, it specifically refers to the fiber core in the power communication optical cable used to carry key services such as power grid dispatch automation and protection and security control.

[0017] (2) Track-type physical optical path switching structure: The core structure of this invention realizes the physical docking and switching of the optical path interface through track sliding. It adopts mechanical positioning method (precise limit design) to realize multi-core fast switching without manual core insertion and removal, improving switching efficiency and accuracy. It belongs to pure physical mechanical switching and does not involve electrical signal control and remote control functions. It has a simple structure and strong stability.

[0018] (3) Dead zone pigtail: A special pigtail used to compensate for the blind zone of OTDR testing. It can improve the core testing accuracy, accurately capture hidden defects such as dust ingress into the flange and poor fiber fusion quality, and prevent communication failures in advance. It is the core auxiliary component of this device to improve testing accuracy.

[0019] (4) OTDR (Optical Time Domain Reflectometer): It is a core testing device used to detect parameters such as fiber core loss, breakpoints, and joint quality of optical cables. It is a key tool for the operation and maintenance of optical fiber cores. The device of this invention can be directly connected to the OTDR to realize multi-core pipeline testing and simplify the testing process.

[0020] (5) Fixed connection flange: The core component for connecting optical fiber cores, used to achieve precise docking of two fiber cores. Its cleanliness and connection accuracy directly affect the quality of optical signal transmission and are a high-incidence area of ​​hidden defects. The device of this invention can accurately capture its hidden defects through the blind zone pigtail.

[0021] (6) Mechanical positioning: The core auxiliary technology of the track-type switching structure, through mechanical structures such as positioning pins and limiting grooves, achieves precise docking of the optical interface, avoids deviation during track sliding, and ensures switching accuracy.

[0022] (7) Integrated combination design: The optical distribution end, test end, control panel, track-type switching mechanism and blind zone pigtail assembly are integrated into the same housing, which is compact, reduces space occupation, and is easy to install and operate, which is different from the traditional distributed switching device.

[0023] Compared with the prior art, the present invention has the following beneficial effects: (1) Convenient operation and high efficiency, significantly reducing labor costs: The present invention adopts a track-type physical optical path switching mechanism to realize multi-core connection and single-person rapid switching test, without the need for manual core-by-core insertion and removal. Compared with the manual core-by-core operation of the existing technology, the switching efficiency is improved by more than 50%. At the same time, the control panel layout is simple, and the switching can be completed by simply pressing the switching button. Front-line maintenance personnel can get started without professional training and without the need for multiple people to work together. Therefore, the operation process can be greatly simplified, maintenance efficiency can be improved, labor input can be reduced, and labor maintenance costs can be reduced. It is especially suitable for large-scale fiber core testing scenarios such as spring and autumn inspections.

[0024] (2) High test accuracy and effective prevention of hidden faults: The present invention integrates a blind zone pigtail assembly, which can compensate for the blind zone of OTDR test and accurately detect near-distance defects such as flange interfaces; at the same time, the track-type switching mechanism is equipped with a mechanical positioning structure to achieve precise interface docking, avoid docking errors caused by manual plugging and unplugging, and further improve test accuracy. Therefore, it can accurately capture hidden defects such as flange dust and poor fiber splicing quality, discover potential faults in advance, reduce the risk of communication interruption, ensure the stability of optical fiber core operation, and solve the pain point of insufficient test accuracy in existing technologies.

[0025] (3) Stable structure, strong adaptability, and convenient installation: The present invention adopts an integrated design, with all components integrated into the same shell, resulting in a compact structure and small space occupation; there are no electrical signal control components, avoiding electrical faults in complex environments. Therefore, the device has strong operational stability and is suitable for different complex operation and maintenance environments such as outdoor and computer rooms; the fixed bracket is adjustable, and the interface adopts standard specifications, which can be directly connected to existing optical distribution cabinets, optical fiber cores and OTDR equipment without large-scale modification of existing facilities. It is convenient to install and adaptable to power communication sites of different sizes and types, solving the problems of poor adaptability and complicated installation of existing technologies. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the track switching structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present invention; In the diagram: 1. Optical connector end; 2. Test end; 3. Linear rail; 4. Sliding seat; 5. Fiber core end; 6. Pigtail end; 7. Switching handle; 8. Fixed connection flange; 9. Connector; 10. Housing; 11. Pigtail reel; 12. Connecting rail. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] See attached document Figure 1 and 2A track-type optical fiber core switching device includes an optical distribution terminal 1, a testing terminal 2, a switching track, and an optical path switching mechanism. The switching track includes a linear track 3, a sliding seat 4, and a connecting track 12. Multiple linear tracks 3 are arranged parallel to each other, and their bottom ends are connected together via the connecting track 12. The sliding seat 4 can slide on the linear tracks 3 and the connecting track 12. The optical path switching mechanism includes a switching handle 7, a fixed connecting flange 8, and a connector 9. The fixed connecting flange 8 is fixed to the top of the linear track 3 and has a double-sided female opening structure. The ends of multiple fiber cores of the optical distribution terminal 1 are respectively inserted into the front female opening of the fixed connecting flange 8 at the top of the corresponding linear track 3. The pigtail of the testing terminal 2 is provided with a connector 9, and the pigtail of the testing terminal 2 is fixed to the sliding seat 4 via the connector 9. The pigtail of the testing terminal 2 can be inserted into the back female opening of the fixed connecting flange 8. The sliding seat 4 is equipped with a switching handle 7. By switching handle 7, the sliding seat 4 is driven to slide on a straight track 3 toward the fixed connection flange 8 at the top of the straight track 3, inserting the pigtail of the test end 2 on the sliding seat 4 into the reverse female opening of the fixed connection flange 8, completing the connection between the pigtail of the test end and a fiber core of an optical distribution end 1. The test equipment connected to the test end is used to test the fiber core. After the test of one fiber core is completed, the sliding seat 4 is driven to slide away from the top fixed connection flange 8 on the straight track 3 by switching handle 7, and slides onto another straight track 3 through the connecting track 12 at the bottom of the straight track 3. The pigtail of the test end on the sliding seat 4 is inserted into the reverse female opening of the fixed connection flange 8 on the straight track 3, completing the connection between the pigtail of the test end and another fiber core of an optical distribution end 1. The test equipment connected to the test end is used to test the fiber core. This process is repeated to complete the testing of all fiber cores.

[0029] After the sliding seat 4 is connected to the connecting rail 12 and the linear rail is replaced, the test end fiber optic cable on the sliding seat 4 faces the fixed connecting flange on the new linear rail. The measures taken are well-known and commonly used in the art, for example: the connector 9 can rotate on the sliding seat 4; rotating the connector 9 180 degrees on the sliding seat 4 can change the orientation of the test end fiber optic cable to match the fixed connecting flange that needs to be inserted. Alternatively: a sliding seat turning branch is provided on the connecting rail 12.

[0030] The sliding seat 4 is equipped with a mechanical positioning mechanism. When the sliding seat slides to the docking position of the fixed connection flange, it locks and positions itself to prevent sliding deviation and ensure the docking accuracy of the interface. The mechanical positioning mechanism is a known and commonly used one, such as a positioning pin and limit groove positioning mechanism. The positioning pin is set on both sides of the sliding seat, and the limit groove is set on the linear track. When the sliding seat slides to the docking position, the positioning pin engages with the limit groove to achieve precise positioning and prevent sliding deviation. The mechanical positioning principle of railway turnouts can also be used to improve the stability and accuracy of switching.

[0031] The front female port of the fixed connection flange is inserted into the fiber core connector 5 at the fiber core end of the optical distribution end 1; the reverse female port of the fixed connection flange is inserted into the pigtail connector 6 at the pigtail end of the test end 2.

[0032] The optical distribution terminal 1, the test terminal 2, the switching track and the optical path switching mechanism are integrated into the same housing 10. The integrated design reduces space occupation and facilitates installation and operation. The housing 10 is equipped with a control panel, and the switching handle 7 is located on the control panel. There are no complicated control buttons, which makes it easy for front-line maintenance personnel to get started quickly.

[0033] The test end is a pigtail, one end of which is connected to the connector 9 on the sliding seat 4 via the pigtail coil 11, and the other end is connected to the test equipment.

[0034] One end of the optical distribution fiber core is connected to a fixed connection flange, and the other end, after being reserved with sufficient length, can be connected to an empty fiber core on the optical fiber distribution frame.

[0035] The testing equipment includes a publicly available optical time-domain reflectometer (OTDR), an instrument that analyzes measurement curves to understand several properties of optical fibers, such as uniformity, defects, breaks, and splice coupling. The test end pigtail is designed to address the dead zone issue, compensating for the OTDR's testing blind zone. This improves the accuracy of fiber core testing, precisely detects hidden defects such as flange dust ingress and poor fiber splicing quality, and proactively prevents communication failures.

[0036] A method for switching optical fiber cores on a track-mounted cable, using the aforementioned switching device, includes the following steps: The test end is a pigtail, one end of which is connected to a connector 9 on a sliding base 4, and the other end is connected to a testing device; an optical distribution terminal 1 fiber core is inserted into the front female opening of each fixed connection flange 8; the switching handle 7 drives the sliding base 4, which carries the end of the test end pigtail along a straight track 3 towards the top fixed connection flange 8, inserting the pigtail of the test end on the sliding base 4 into the back female opening of the fixed connection flange 8, thus completing the connection between the pigtail of the test end and an optical distribution terminal 1 fiber core. The connected testing equipment tests the fiber core. After testing one fiber core, the sliding seat 4 is moved away from the top fixed connection flange 8 on the linear track 3 by switching handle 7, and then slides on another linear track 3 through the connecting track 12 at the bottom of the linear track 3. The pigtail at the test end on the sliding seat 4 is inserted into the reverse female opening of the fixed connection flange 8 on the linear track 3, completing the connection between the pigtail at the test end and another fiber core at the optical distribution end 1. The testing equipment connected to the test end tests the fiber core. This process is repeated to complete the testing of all fiber cores.

[0037] In this embodiment, there are eight linear tracks 3 and eight fixed connection flanges 8, and one sliding seat 4. When operating on-site, maintenance personnel first install the invention in the optical distribution cabinet using a fixed bracket, connect the eight optical fiber cores to the front female ports of the eight fixed connection flanges 8 one by one, connect the OTDR device to the test end, and mate the pigtail of the test end 2 with the connector 9 on the sliding seat 4; slide the switching handle 7, and the sliding seat 4 slides along the linear track 3 towards the fixed connection flange 8 to achieve precise interface connection. At this time, the OTDR device can perform testing on the fiber core; after the test is completed, slide the switching handle 7 again, and the sliding seat 4 slides along the linear track 3 and the connecting track 12 to connect the next fiber core, completing one switching test process; the entire process does not require manual insertion and removal of each fiber core, and can be completed by a single person. The mechanical positioning structure ensures the stability of the connection.

[0038] Adaptation and Installation: The device of this invention has a small overall size, making it suitable for deployment in fiber optic distribution frame cabinets; both the optical distribution end and the testing end interfaces adopt standard interfaces, which can be directly connected to existing optical fiber cores and OTDR equipment, and are compatible with different specifications of power communication optical cables (such as 6-core, 8-core, 12-core, etc., which can be flexibly adapted by adjusting the number of sliding seat interfaces); it can be adapted to different installation environments such as outdoor communication sites and equipment rooms, ensuring stable operation of the device in complex environments.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A track-mounted optical fiber core switching device, characterized in that: The system includes an optical distribution end (1), a testing end (2), a switching track, and an optical path switching mechanism. The switching track includes a linear track (3), a sliding seat (4), and a connecting track (12). Multiple linear tracks (3) are arranged in parallel to each other, and the bottom ends of the multiple linear tracks (3) are connected together by the connecting track (12). The sliding seat (4) can slide on the linear track (3) and the connecting track (12). The optical path switching mechanism includes a switching handle (7), a fixed connecting flange (8), and a connector (9). The fixed connecting flange (8) is fixed on the top of the linear track (3). The fixed connecting flange (8) has a front and back female opening structure. The ends of multiple fiber cores of the optical distribution end (1) are respectively inserted into the front female opening of the fixed connecting flange (8) at the top of the corresponding linear track (3). The tail fiber end of the test end (2) is provided with a connector (9). The tail fiber of the test end (2) is fixed on the sliding seat (4) through the connector (9). The tail fiber end of the test end (2) can be inserted into the back female opening of the fixed connecting flange (8). The sliding seat (4) is equipped with a switching handle (7); by switching handle (7), the sliding seat (4) is driven to slide on a straight track (3) towards the fixed connection flange (8) at the top of the straight track (3), and the pigtail of the test end (2) on the sliding seat (4) is inserted into the female opening on the reverse side of the fixed connection flange (8), thus completing the connection between the pigtail of the test end and the fiber core of an optical distribution end (1), and the fiber core is tested by the test equipment connected to the test end; after the test of a fiber core is completed, the sliding seat is driven by switching handle (7). (4) Slide the linear track (3) away from the top fixed connection flange (8) and slide it into another linear track (3) through the connecting track (12) at the bottom of the linear track (3). Insert the pigtail of the test end on the sliding seat (4) into the reverse female opening of the fixed connection flange (8) on the linear track (3) to complete the connection between the pigtail of the test end and the fiber core of another optical distribution end (1). Test the fiber core through the test equipment connected to the test end; and so on, to complete the test of all fiber cores.

2. The track-mounted optical fiber core switching device according to claim 1, characterized in that: After the sliding seat (4) is replaced by the linear track (3) via the connecting track (12), the test end of the sliding seat (4) is oriented toward the fixed connecting flange (8) on the replaced linear track (3).

3. A track-mounted optical fiber core switching device according to claim 1 or 2, characterized in that: The sliding seat (4) is equipped with a mechanical positioning mechanism, which locks and positions the sliding seat when it slides to the fixed connection flange docking position.

4. A track-mounted optical fiber core switching device according to claim 1 or 2, characterized in that: The front female port of the fixed connection flange is inserted into the fiber core connector (5) at the fiber core end of the optical distribution end (1); the reverse female port of the fixed connection flange (8) is inserted into the pigtail connector (6) at the pigtail end of the test end (2).

5. A track-mounted optical fiber core switching device according to claim 1 or 2, characterized in that: The optical distribution end (1), the test end (2), the switching track and the optical path switching mechanism are integrated in the same housing (10), with an integrated design. The housing (10) is equipped with a control panel, and the switching handle (7) is located on the control panel.

6. A track-mounted optical fiber core switching device according to claim 1 or 2, characterized in that: The test end is a pigtail, one end of which is connected to the connector (9) on the sliding seat (4) via the pigtail coil (11), and the other end is connected to the test equipment.

7. A method for switching optical fiber cores in a track-mounted optical cable, using the track-mounted optical fiber core switching device described in claims 1-6, characterized in that: The test end is a pigtail, one end of which is connected to the connector (9) on the sliding seat (4), and the other end is connected to the test equipment; the front female opening of each fixed connection flange (8) is used to insert the fiber core of the optical distribution end (1); the switching handle (7) drives the sliding seat (4), and the sliding seat (4) carries the end of the test end pigtail along the straight track (3) to slide towards the top fixed connection flange (8), inserting the pigtail of the test end on the sliding seat (4) into the back female opening of the fixed connection flange (8), completing the connection between the pigtail of the test end and a fiber core of the optical distribution end (1), and the test equipment connected to the test end is used to test the fiber core. Test; After completing the test of one fiber core, the sliding seat (4) is driven to slide away from the top fixed connection flange (8) on the straight track (3) by switching handle (7), and slides into another straight track (3) through the connecting track (12) at the bottom of the straight track (3). The pigtail of the test end on the sliding seat (4) is inserted into the reverse female opening of the fixed connection flange (8) on the straight track (3) to complete the connection between the pigtail of the test end and another fiber core of the optical distribution end (1). The fiber core is tested by the test equipment connected to the test end; and so on, to complete the test of all fiber cores.

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