A detection device for optical cable operation and maintenance

Abstract

The utility model provides a kind of detection equipment for optical cable operation and maintenance, it is related to optical cable detection instrument technical field, the detection equipment for optical cable operation and maintenance includes optical cable detection equipment box, display of being located at the top surface of optical cable detection equipment box and electric control system being located in the inside of optical cable detection equipment box, one of the side wall surface of optical cable detection equipment box is equipped with optical cable socket, the lower side of optical cable socket is equipped with optical cable supporting plate, the upper side of optical cable socket is equipped with automatic compression device, automatic compression device includes the fixed plate being located at the side wall surface of optical cable detection equipment box, the compression drive assembly being located at the upper side of fixed plate, the compression head assembly being located at the lower side of fixed plate and the limiting component being located at the side of compression drive assembly, realize the automation and precision of optical cable fixation by setting automatic compression device and double pressure sensor closed loop control, shorten optical cable fixation time, to greatly improve operation and maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical cable testing instruments, and in particular to a testing device for optical cable maintenance. Background Technology

[0002] Optical cables, as the core carrier of information transmission, are widely used in critical areas such as communication backbone networks, power dispatching systems, and rail transit signaling links. Their operational status directly affects the stability and security of information transmission. Optical cable maintenance and testing equipment, through precise docking with optical cable interfaces, can detect key parameters such as link loss, breakpoint location, fiber length, and connector attenuation. It is a core tool for ensuring efficient operation and maintenance of optical cable networks, playing an irreplaceable role, especially in scenarios such as field repairs and routine inspections.

[0003] Traditional equipment often uses manual screws or clips to secure optical cables, requiring manual tightening or loosening. The manually applied clamping force is difficult to control precisely, making operation cumbersome in dusty and humid outdoor environments and significantly reducing testing preparation efficiency. More importantly, the manually applied clamping force relies entirely on the operator's experience, making precise control difficult. Insufficient clamping force leads to poor contact between the optical cable and the interface, easily causing abnormal light signal reflection and attenuation, resulting in distorted test data. Excessive clamping force can squeeze the outer sheath of the optical cable, even causing micro-bending or breakage of the internal optical fiber, triggering secondary faults, especially with poor compatibility with optical cables of different diameters. Secondly, after the optical cable is inserted into the equipment interface, the lack of a stable support structure or fixed support height causes the cable to sag under its own weight or shift due to force, easily generating additional stress at the interface. Long-term use will accelerate interface wear and affect the stability of the test signal. Secondly, while some devices attempt to use electrically driven clamping, they lack effective travel limit and pressure feedback mechanisms. The electric push rod is prone to collisions with the equipment due to overtravel or excessive clamping of the optical cable, posing safety hazards. Furthermore, pressure detection often relies on a single sensor, resulting in insufficient reliability and difficulty in achieving closed-loop control. Additionally, the optical cable interface is directly exposed to the external environment, making it susceptible to dust and moisture intrusion, leading to poor contact. Existing dustproof structures are mostly fixed, making replacement difficult after wear. Switching between mobile and fixed installations is inconvenient, and stable placement on uneven ground during field maintenance is challenging, impacting operational efficiency. Therefore, addressing the problems of low optical cable clamping efficiency, poor adaptability, insufficient safety, and inconvenient operation in existing technologies, there is an urgent need for an optical cable maintenance and testing device with optimized structure, high automation, strong adaptability, and easy operation to meet the requirements of efficient and accurate optical cable maintenance. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes a testing device for optical cable maintenance, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: This utility model provides a testing device for optical cable maintenance, relating to the technical field of optical cable testing instruments. The testing device for optical cable maintenance includes an optical cable testing device housing, a display on the top surface of the optical cable testing device housing, and an electrical control system inside the optical cable testing device housing. One side wall surface of the optical cable testing device housing is provided with an optical cable socket. Below the optical cable socket is an optical cable support plate. Above the optical cable socket is an automatic clamping device. The automatic clamping device includes a fixing plate on the side wall surface of the optical cable testing device housing, a clamping drive assembly above the fixing plate, a clamping head assembly below the fixing plate, and a limiting assembly on one side of the clamping drive assembly.

[0005] Furthermore, the optical cable tray is an L-shaped optical cable tray, including an integrally formed transverse support part and a longitudinal connecting part. The upper surface of the transverse support part is provided with an arc-shaped support groove to prevent the optical cable from slipping. The inner wall of the support groove is provided with a rubber anti-slip pad. The longitudinal connecting part is provided with an elongated adjustment hole. The optical cable tray is fixedly connected to the optical cable testing equipment housing by threaded fasteners passing through the elongated adjustment hole.

[0006] Furthermore, the clamping drive assembly includes a linear servo electric cylinder fixed to the upper surface of the fixed plate, a linear bearing sleeved in the guide hole, and a connecting plate connecting the electric cylinder push rod and the lower clamping head assembly. The cylinder axis of the linear servo electric cylinder is perpendicular to the optical cable socket axis. A pressure sensor is installed inside the cylinder of the linear servo electric cylinder. The electrical control system is equipped with a PLC controller, and the pressure sensor is electrically connected to the PLC controller of the electrical control system.

[0007] Furthermore, the clamping head assembly includes a clamping block connected to the lower end of the electric cylinder push rod. The electric cylinder push rod passes through the through hole of the clamping block. The bottom of the clamping block is provided with an arc-shaped groove. An arc-shaped rubber pad is placed in the arc-shaped groove at the bottom of the clamping block. A thin-film pressure sensor is provided on the upper surface of the arc-shaped rubber pad. The thin-film pressure sensor is placed in the through hole of the clamping block and connected to the lower end of the electric cylinder push rod. The thin-film pressure sensor is electrically connected to the PLC controller of the electrical control system.

[0008] Furthermore, the limiting component includes an upper limit bracket connected to the top of the cylinder body of the linear servo electric cylinder, a lower limit bracket connected to the bottom of the cylinder body of the linear servo electric cylinder, and magnetic proximity switches respectively disposed on the upper limit bracket and the lower limit bracket.

[0009] Furthermore, a magnetic proximity switch is provided on the outer surface of the upper limit bracket, and a permanent magnet ring corresponding to the magnetic proximity switch is provided on the electric cylinder push rod. A magnetic proximity switch is provided on the outer surface of the lower limit bracket, and a permanent magnet ring corresponding to the magnetic proximity switch is provided on the electric cylinder push rod. The magnetic proximity switch is electrically connected to the PLC controller of the electrical control system.

[0010] Furthermore, the bottom of the optical cable testing equipment housing is provided with four support feet, which are omnidirectional wheels, located at the four corners of the bottom of the optical cable testing equipment housing.

[0011] Furthermore, a dustproof rubber ring is provided on the inner wall of the optical cable socket, and the dustproof rubber ring is a detachable dustproof rubber ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a testing device for optical cable maintenance, which automates and precisely fixes optical cables by incorporating an automatic clamping device and a closed-loop control system with dual pressure sensors. The linear servo electric cylinder drives the clamping head assembly for automatic clamping, eliminating the need for manual operation, shortening the cable fixing time, and significantly improving maintenance efficiency. Simultaneously, the pressure sensor built into the linear servo electric cylinder and the thin-film pressure sensor at the clamping head form dual redundant detection. The PLC controller can adjust the clamping force in real time, preventing both excessive looseness leading to poor contact and distorted test data, and excessive tightness that could compress the outer sheath of the optical cable and damage the fiber core, effectively reducing the risk of secondary failures. Furthermore, the L-shaped limit brackets symmetrically arranged on the upper and lower parts of the linear servo electric cylinder body, combined with magnetic proximity switches and permanent magnet rings on the push rod, form dual limit stroke protection, preventing the push rod from overtraveling and colliding with the equipment housing or excessively clamping the optical cable, further improving the reliability of the optical cable testing equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the testing equipment for optical cable maintenance according to this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the optical cable support plate 5 of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the automatic pressing device 6 of this utility model.

[0016] Figure 4 for Figure 3 A schematic diagram of its breakdown.

[0017] In the diagram: 1-Fiber optic cable inspection equipment housing; 2-Display; 3-Electrical control system; 4-Fiber optic cable socket; 41-Dustproof rubber ring; 5-Fiber optic cable support plate; 51-Horizontal support part; 52-Longitudinal connection part; 53-Slot; 54-Rubber anti-slip pad; 55-Adjustment hole; 6-Automatic clamping device; 7-Fixing plate; 8-Clamping drive assembly; 81-Linear servo electric cylinder; 82-Linear bearing; 83-Electric cylinder push rod; 84-Connecting plate; 85-Pressure sensor; 9-Clamping head assembly; 91-Clamping block; 92-Rubber pad; 93-Thin film pressure sensor; 10-Limit assembly; 101-Upper limit bracket; 102-Lower limit bracket; 103-Magnetic proximity switch; 104-Permanent magnet ring. Detailed Implementation

[0018] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples: This utility model provides a testing device for optical cable maintenance, as shown in the attached figure. Figure 1 As shown, the device includes a fiber optic cable testing equipment housing 1, a display 2 located on the top surface of the fiber optic cable testing equipment housing 1, and an electrical control system 3 located inside the fiber optic cable testing equipment housing 1. One side wall surface of the fiber optic cable testing equipment housing 1 is provided with a fiber optic cable socket 4. Below the fiber optic cable socket 4 is a fiber optic cable support plate 5. Above the fiber optic cable socket 4 is an automatic clamping device 6. The automatic clamping device 6 includes a fixing plate 7 located on the side wall surface of the fiber optic cable testing equipment housing 1, a clamping drive assembly 8 located above the fixing plate 7, a clamping head assembly 9 located below the fixing plate 7, and a limiting assembly 10 located on one side of the clamping drive assembly 8.

[0019] It should be further explained that the display 2 is embedded in the center of the top surface of the optical cable inspection equipment housing 1, and adopts a 7-inch industrial-grade touch screen. It is connected to the top of the housing via a damping hinge, and can achieve stepless rotation from 0 to 90 degrees. Physical operation buttons are integrated below the screen, accommodating both touch and mechanical operation needs. The electrical control system 3 is fixed in the mounting cavity inside the optical cable inspection equipment housing 1. The electrical control system 3 includes a PLC controller, a DC power supply module, a signal isolator, and a relay module. The electrical control system 3 is connected to external sensors and actuators through internal cable trays, and all cables are identified by marking sleeves for easy maintenance.

[0020] As attached Figure 2As shown, the optical cable tray 5 is an L-shaped optical cable tray, including an integrally formed transverse support part 51 and a longitudinal connecting part 52. The upper surface of the transverse support part 51 is provided with an arc-shaped groove 53 for placing the optical cable. The inner wall of the groove 53 is provided with a rubber anti-slip pad 54. The longitudinal connecting part 52 is provided with an elongated adjustment hole 55. The optical cable tray 5 is fixedly connected to the optical cable testing equipment housing 1 by threaded fasteners passing through the elongated adjustment hole 55. Preferably, the optical cable tray 5 is an L-shaped structure integrally die-cast from aluminum alloy, which combines lightweight and structural rigidity, including an integrally formed transverse support part 51 and a longitudinal connecting part 52. The transverse support part 51 extends horizontally, and the upper surface of the transverse support part 51 is milled with an arc-shaped groove 53 with curvature to adapt to the optical cable specifications. The edges of the groove are rounded to avoid scratching the optical cable. The inner wall of the tray 53 is fitted with a rubber anti-slip pad 54, with a diamond-shaped anti-slip pattern pressed onto the surface, effectively preventing the optical cable from slipping. Furthermore, the longitudinal connecting part 52 is vertically connected to one end of the transverse supporting part 51 and corresponds to one side of the optical cable socket 4. The width of the longitudinal connecting part 52 is the same as that of the transverse supporting part, and two elongated adjustment holes 55 are formed along the height direction on the plate surface of the longitudinal connecting part 52. The inner side of the longitudinal connecting part of the transverse supporting part 51 and the longitudinal connecting part 52 is also provided with triangular reinforcing ribs, integrally formed with the transverse supporting part and the longitudinal connecting part, significantly improving the bending strength of the tray. When the optical cable tray 5 is rigidly connected to the threaded hole on the side wall of the optical cable testing equipment housing 1 by two stainless steel screws passing through the elongated adjustment holes 55, the lifting height can be precisely adjusted according to the diameter of the optical cable, ensuring that the optical cable axis and the socket 4 are on the same central axis.

[0021] As attached Figure 3 and attached Figure 4 As shown in the diagram, the pressing drive assembly 8 includes a linear servo electric cylinder 81 fixed to the upper surface of the fixed plate 7, a linear bearing 82 sleeved in the guide hole, and a connecting plate 84 connecting the electric cylinder push rod 83 and the lower pressing head assembly 9. The cylinder axis of the linear servo electric cylinder 81 is perpendicular to the axis of the optical cable socket 4. A pressure sensor 85 is installed inside the cylinder of the linear servo electric cylinder 81. The electrical control system 3 is equipped with a PLC controller, and the pressure sensor 85 is electrically connected to the PLC controller of the electrical control system 3.

[0022] It should be further explained that the linear servo electric cylinder 81 is rigidly fixed to the center position of the upper surface of the fixing plate 7 by four hexagonal screws via a flange. The cylinder axis of the linear servo electric cylinder 81 is perpendicular to the central axis of the optical cable socket 4, ensuring that the extension and retraction direction of the push rod is completely consistent with the radial direction of the optical cable, avoiding optical cable deviation caused by lateral force, thereby realizing the vertical clamping action of the optical cable at the optical cable socket 4. The cylinder body of the linear servo electric cylinder 81 integrates a pressure sensor 85, which can monitor the clamping force output by the electric cylinder push rod 83 in real time, ensuring that the clamping force meets the process requirements. The electrical control system 3 is equipped with a PLC controller, and the pressure sensor 85 is electrically connected to the PLC controller through a shielded signal line to form a closed-loop control circuit. When the clamping force detected by the pressure sensor 85 reaches a preset threshold, the PLC controller can control the linear servo electric cylinder 81 to stop its action in real time, achieving precise pressure control.

[0023] As attached Figure 1 and attached Figure 4 As shown in the diagram, the clamping head assembly 9 includes a clamping block 91 connected to the lower end of the electric cylinder push rod 83. The electric cylinder push rod 83 passes through the through hole of the clamping block 91. The bottom of the clamping block 91 has an arc-shaped groove, and an arc-shaped rubber pad 92 is placed in the arc-shaped groove at the bottom of the clamping block 91. A thin-film pressure sensor 93 is provided on the upper surface of the arc-shaped rubber pad 92. The thin-film pressure sensor 93 is placed in the through hole of the clamping block 91 and connected to the lower end of the electric cylinder push rod 83. The thin-film pressure sensor 93 is electrically connected to the PLC controller of the electrical control system 3. It should be further noted that the clamping block 91 is made of aluminum alloy by CNC precision machining, and the surface is treated with hard anodizing to improve wear resistance. The clamping block 91 has a through hole in its central axis, which forms a clearance fit with the electric cylinder push rod 83 to ensure that the push rod 73 passes through without jamming. The bottom is milled to form an arc-shaped groove that matches the curvature of the arc-shaped support groove 53 of the optical cable support plate 5. The edge of the groove is rounded to avoid sharp corners scratching the outer sheath of the optical cable.

[0024] Furthermore, the limiting assembly 10 includes an upper limiting bracket 101 connected to the top of the cylinder body of the linear servo electric cylinder 81, a lower limiting bracket 102 connected to the bottom of the cylinder body of the linear servo electric cylinder 81, and magnetic proximity switches 103 respectively disposed on the limiting brackets. The outer surface of the upper limiting bracket 101 is provided with a magnetic proximity switch 103, and the electric cylinder push rod 83 is provided with a corresponding permanent magnet ring 104. The outer surface of the lower limiting bracket 102 is provided with a magnetic proximity switch 103, and the electric cylinder push rod 83 is provided with a corresponding permanent magnet ring 104. The magnetic proximity switch 103 is electrically connected to the PLC controller of the electrical control system 3. Both the upper limiting bracket 101 and the lower limiting bracket 102 adopt an L-shaped sheet metal structure and are rigidly fixed to the upper and lower end caps of the cylinder body of the linear servo electric cylinder 81 by countersunk bolts, forming a mechanical limiting reference for the push rod's stroke. A magnetic proximity switch 103 is fixed to the outer surface of the horizontal extension end of the upper limit bracket 101 via a snap-fit ​​mounting base. Its sensing surface faces the axis of the electric cylinder push rod 83. Correspondingly, a matching permanent magnet ring 104 is embedded in the outer circumferential surface of the electric cylinder push rod 83 near its top. When the push rod retracts upward to the preset upper limit position, the permanent magnet ring 104 and the magnetic proximity switch 103 on the upper limit bracket 101 form an inductive engagement. A magnetic proximity switch 103 is similarly mounted on the outer surface of the horizontal extension end of the lower limit bracket 102. Another set of permanent magnet rings 104 is embedded in the outer circumferential surface of the electric cylinder push rod 83 near its bottom. When the push rod extends downward to the preset lower limit position, the permanent magnet ring 104 and the magnetic proximity switch 103 on the lower limit bracket 102 form an inductive engagement. It should be further noted that both sets of magnetic proximity switches 103 are electrically connected to the PLC controller of the electrical control system, forming an electronic limit circuit for the push rod stroke. When the permanent magnet ring 104 moves with the push rod to the sensing area of ​​the corresponding magnetic proximity switch 103, the proximity switch outputs a switching signal to the PLC controller. The PLC controller immediately triggers the emergency stop command of the linear servo electric cylinder 81. Together with the closed-loop control of the pressure sensor 85, it achieves safe limit and precise position control of the clamping action, avoiding component collision or clamping failure caused by overtravel.

[0025] Furthermore, four support feet 11 are respectively installed at the four corners of the bottom of the optical cable testing equipment housing 1. These support feet adopt a universal wheel structure with a braking function. It should be specifically noted that the wheel body of the support foot 11 is made of high-strength polyurethane material, which has wear-resistant and shock-absorbing properties. An appropriate wheel diameter is selected to ensure the stability of the equipment movement. The wheel frame is rigidly connected to the pre-set threaded hole at the bottom of the housing through welded nuts. The pedal-type brake device configured on the side of the wheel body can lock the wheel body after the equipment is in place, preventing the equipment from shifting due to external force during the testing process. This not only meets the flexible transportation needs of the equipment in the laboratory or on-site, but also ensures the stability of the placement in the working state.

[0026] Preferably, the inner wall of the optical cable connector 4 has an annular groove near the port, and a dustproof rubber ring 41 is embedded in the groove. This rubber ring is made of silicone rubber, possessing good elasticity and aging resistance. Its inner edge is designed with an inwardly inclined lip structure, allowing it to tightly fit against the outer surface of the connector when the optical cable plug is inserted, forming a seal and effectively preventing dust, moisture, and other impurities from entering the connector. Furthermore, the dustproof rubber ring 41 uses a snap-on installation design; the groove depth is slightly less than the cross-sectional diameter of the rubber ring, allowing for easy installation and removal through elastic deformation, facilitating regular cleaning or replacement maintenance.

[0027] Furthermore, the display 2 is connected to the optical cable testing equipment housing 1 via a damping hinge, allowing it to rotate from 0° to 90°. Specifically, the connection between the display 2 and the optical cable testing equipment housing 1 is achieved using a stainless steel damping hinge. The fixed end of the hinge is secured to the front edge of the upper surface of the housing 1 with hexagonal bolts, while the movable end is rigidly connected to the back shell of the display 2. When rotated to 0°, the display is folded into place against the housing surface, reducing space occupation when the equipment is not in use; when rotated to 90°, the screen is in a vertical position, suitable for operators who need to stand and observe; and within the commonly used range of 30° to 60°, the damping force counteracts the display's own weight, preventing angular deviation due to slight vibrations and ensuring clear and stable reading of the test data.

[0028] When the optical cable inspection equipment is powered on, the PLC controller in its electrical control system starts a self-test program, resetting all components to their initial state. After the operator inserts the optical cable plug into the optical cable socket equipped with a removable dustproof rubber ring 41, the inspection command is initiated. The linear servo electric cylinder 81 drives the electric cylinder push rod 83 to extend, causing the connecting plate 84 and the lower clamping head assembly 9 to move smoothly downwards along the guide structure formed by the guide shaft and linear bearing 82. During this process, the pressure sensor 85 built into the linear servo electric cylinder 81 and the thin-film pressure sensor 93 in the clamping head assembly 9 form a dual-path pressure detection: the pressure sensor 85 monitors the driving force output by the electric cylinder in real time, while the thin-film pressure sensor 93 directly senses the contact pressure between the clamping head and the optical cable surface. Both data are synchronously fed back to the PLC controller. When the contact pressure detected by the thin-film pressure sensor 93 reaches a preset threshold and forms a valid verification with the detection value of the pressure sensor 85, the PLC controller controls the linear servo electric cylinder 81 to stop, achieving precise pressure control under dual protection and avoiding pressure loss due to a single sensor failure. The magnetic proximity switches 103 on the upper limit bracket 101 and lower limit bracket 102 of the limiting assembly 10 respectively cooperate with the corresponding permanent magnet rings 104 on the electric cylinder push rod 83 to monitor the stroke of the electric cylinder push rod 83 in real time. When the electric cylinder push rod 83 exceeds the preset stroke range, the magnetic proximity switch 103 sends a signal to the PLC controller, triggering the linear servo electric cylinder 81 to stop urgently, forming a triple protection mechanism with the dual pressure sensors to further prevent overpressure or component collision.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A testing device for optical cable maintenance, comprising an optical cable testing device housing (1), a display (2) disposed on the top surface of the optical cable testing device housing (1), and an electrical control system (3) disposed inside the optical cable testing device housing (1), characterized in that: The optical cable testing equipment housing (1) has an optical cable socket (4) on one of its side walls. The optical cable socket (4) is provided with an optical cable support plate (5) below it. An automatic clamping device (6) is provided above the optical cable socket (4). The automatic clamping device (6) includes a fixing plate (7) on the side wall of the optical cable testing equipment housing (1), a clamping drive assembly (8) above the fixing plate (7), a clamping head assembly (9) below the fixing plate (7), and a limiting assembly (10) on one side of the clamping drive assembly (8).

2. The testing equipment for optical cable maintenance according to claim 1, characterized in that: The optical cable tray (5) is an L-shaped optical cable tray, including an integrally formed transverse support part (51) and a longitudinal connection part (52). The upper surface of the transverse support part (51) is provided with an arc-shaped groove (53) for placing the optical cable. The inner wall of the groove (53) is provided with a rubber anti-slip pad (54). The longitudinal connection part (52) is provided with an elongated adjustment hole (55). The optical cable tray (5) is fixedly connected to the optical cable testing equipment box (1) by threaded fasteners passing through the elongated adjustment hole (55).

3. The testing equipment for optical cable maintenance according to claim 2, characterized in that: The pressing drive assembly (8) includes a linear servo electric cylinder (81) fixed to the upper surface of the fixed plate (7), a linear bearing (82) sleeved in the guide hole, and a connecting plate (84) connecting the electric cylinder push rod (83) and the lower pressing head assembly (9). The cylinder axis of the linear servo electric cylinder (81) is perpendicular to the axis of the optical cable socket (4). A pressure sensor (85) is installed inside the cylinder of the linear servo electric cylinder (81). The electrical control system (3) is equipped with a PLC controller. The pressure sensor (85) is electrically connected to the PLC controller of the electrical control system (3).

4. The testing equipment for optical cable maintenance according to claim 3, characterized in that: The clamping head assembly (9) includes a clamping block (91) connected to the lower end of the electric cylinder push rod (83). The electric cylinder push rod (83) passes through the through hole of the clamping block (91). The bottom of the clamping block (91) is provided with an arc-shaped groove. An arc-shaped rubber pad (92) is provided in the arc-shaped groove at the bottom of the clamping block (91). A thin-film pressure sensor (93) is provided on the upper surface of the arc-shaped rubber pad (92). The thin-film pressure sensor (93) is placed in the through hole of the clamping block (91) and connected to the lower end of the electric cylinder push rod (83). The thin-film pressure sensor (93) is electrically connected to the PLC controller of the electrical control system (3).

5. The testing equipment for optical cable maintenance according to claim 4, characterized in that: The limiting component (10) includes an upper limit bracket (101) connected to the top of the cylinder body of the linear servo electric cylinder (81), a lower limit bracket (102) connected to the bottom of the cylinder body of the linear servo electric cylinder (81), and magnetic proximity switches (103) respectively provided on the upper limit bracket (101) and the lower limit bracket (102).

6. The testing equipment for optical cable maintenance according to claim 5, characterized in that: The outer surface of the upper limit bracket (101) is provided with a magnetic proximity switch (103), and the electric cylinder push rod (83) is provided with a permanent magnet ring (104) corresponding to the magnetic proximity switch (103). The outer surface of the lower limit bracket (102) is provided with a magnetic proximity switch (103), and the electric cylinder push rod (83) is provided with a permanent magnet ring (104) corresponding to the magnetic proximity switch (103). The magnetic proximity switch (103) is electrically connected to the PLC controller of the electric control system (3).

7. The testing equipment for optical cable maintenance according to claim 1, characterized in that: The bottom of the optical cable testing equipment housing (1) is provided with four support feet (11), which are universal wheels, located at the four corners of the bottom of the optical cable testing equipment housing (1).

8. The testing equipment for optical cable maintenance according to claim 1, characterized in that: The inner wall of the optical cable socket (4) is provided with a dustproof rubber ring (41), which is a detachable dustproof rubber ring.

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