A state monitoring device for a cable branch box

Abstract

The application provides a kind of state monitoring device of cable branch box, belongs to monitoring technical field;Including branch box ontology, the multiple wire rows are installed in branch box ontology by binding post, wire row surface is equipped with multiple fixing holes, still include: connecting frame mechanism, the connecting frame mechanism includes mounting plate, mounting plate surface is equipped with mounting hole, mounting hole is corresponding with fixed hole, bolt is penetrated in mounting hole and fixed hole.The application is fixed in the surface of contact plate by setting connecting frame mechanism, inserting cable into connecting pipe before use, and connecting cable by tool pinch flat connecting pipe, temperature sensor is fixed in the surface of contact plate by inlaying mode, without using rolling strip to be fixed, without worrying about the falling of temperature sensor in the process of use, improve the stability after temperature sensor installation, and temperature sensor can monitor the connection of wire row at this time, if bolt loosens, it can be monitored in time, improve the accuracy of monitoring.

Description

Technical Field

[0001] This invention relates to the field of monitoring technology, and in particular to a status monitoring device for cable branch boxes. Background Technology

[0002] Cable branch boxes are outdoor distribution boxes used in power distribution systems for branching, connecting, and routing cable lines. They can branch multiple branches from the main cable and are commonly used in urban power grids and residential power distribution lines. The copper busbars, terminals, and cable joints inside the box are prone to overheating due to loose bolts, poor contact, or overload. High temperatures can accelerate insulation aging and cause short circuits and fires. Therefore, continuous temperature monitoring using temperature sensors is necessary to provide timely warnings of overheating faults. The main body of the equipment consists of a metal shell, insulating partitions, inlet and outlet cable terminals, busbars, sealing components, and a door lock protection structure. With the addition of a temperature measuring component, it includes a temperature sensor and a receiving terminal. During use, the main cable is connected to the inlet chamber, and each branch cable is connected to the branch terminals. The box is then closed and sealed for waterproofing. The temperature measuring device collects the contact temperature data in real time and uploads it to the backend. Automatic alarms are triggered when thresholds are exceeded, ensuring stable operation of the power distribution lines.

[0003] Temperature sensors are typically fixed to cables using a tape. Cables can generate high temperatures due to various issues, and the tape will age faster under prolonged exposure to high temperatures. After long-term use, the tape may break. If the tape breaks, the temperature sensor will be unable to monitor the cable. If the cable is overheating, workers will not be able to detect it in time. Prolonged high cable temperatures can lead to fire hazards. There is a need for further optimization in terms of the stability of temperature sensor installation. Therefore, this application provides a status monitoring device for cable branch boxes to meet this need. Summary of the Invention

[0004] This invention provides a status monitoring device for cable branch boxes to address the need for further optimization of the installation stability of temperature sensors.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A status monitoring device for a cable branch box includes a branch box body, wherein multiple cable strips are mounted inside the branch box body via terminal blocks, and multiple fixing holes are formed on the surface of the cable strips; the device also includes: The connecting frame mechanism includes a mounting plate with mounting holes on its surface, corresponding to fixing holes. Bolts pass through the mounting holes and fixing holes, and nuts are threaded onto the bolts. The nuts fit against the surface of the cable strip. A contact plate is provided on the side plate of the mounting plate, and a connecting tube is integrally formed on the surface of the contact plate. A temperature sensor is embedded on the surface of the contact plate to monitor the temperature at the cable strip.

[0006] Preferably, the mounting plate has a hook-on part fixed at its end, and the mounting plate is fixed with the hook-on part fitting against the side of the cable strip.

[0007] Preferably, the mounting plate has two U-shaped bends integrally formed on the side away from the cable tray, the two U-shaped bends are symmetrically arranged about the mounting holes, and the end of the bolt is located between the two U-shaped bends.

[0008] Preferably, multiple square plates are fixed to the opposite sides of both U-shaped bends, and the multiple square plates are arranged perpendicularly to the U-shaped bends.

[0009] Preferably, a limiting component is provided on the side of the mounting plate, and the limiting component is used to install the contact plate.

[0010] Preferably, the limiting component includes an insulating plate fixed to the side of the mounting plate. The surface of the insulating plate has a through hole, and a contact plate is movably connected in the through hole. A servo motor is fixed to the surface of the insulating plate. The output shaft of the servo motor movably passes through the insulating plate and is fixedly connected to the limiting block. A spring is provided on the surface of the mounting plate. The spring is located between adjacent square plates and fits against the surface of the U-shaped bend. In use, the limiting block fits against the surface of the contact plate, and the contact plate fits against the square plate and the mounting plate. At high temperatures, the limiting block disengages from the contact plate, and the spring drives the contact plate to disengage from the square plate and the mounting plate.

[0011] Preferably, the end of the spring sheet is integrally formed with a mounting portion, which is fixed to the surface of the contact plate by screws.

[0012] Preferably, each of the opposite sides of the spring sheet is fixed with an insulating side strip, the insulating side strip is slidably connected to the surface of the square plate, and an insulating plate is fixed to the surface of the U-shaped bend and between adjacent square plates, and the spring sheet is attached to the surface of the insulating plate.

[0013] Preferably, the surface of the contact plate is provided with an arc-shaped positioning groove. In use, the limiting block is engaged in the positioning groove, and the end of the limiting block is arc-shaped.

[0014] Preferably, the end of the insulating plate is integrally formed with an extension portion, which is fixed to the surface of the mounting plate.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting up a connecting frame mechanism, before use, the cable is inserted into the connecting pipe, and the connecting pipe is flattened with a tool to connect the cable. The temperature sensor is fixed to the surface of the contact plate by embedding, without the need for the use of a clamping strip for fixation. During use, there is no need to worry about the temperature sensor falling off, which improves the stability of the temperature sensor after installation. At this time, the temperature sensor can monitor the connection of the cable tray. If the bolts become loose, it can be detected in time, which improves the accuracy of monitoring.

[0016] By setting up a mounting bracket that attaches to the side of the cable strip, the mounting plate can be positioned, making it easier to align the mounting holes with the fixing holes and improving the convenience of installation.

[0017] By incorporating U-shaped bends, the contact area between the mounting plate and the air is increased. When the connection point heats up, the increased heat dissipation area enhances heat dissipation capacity, thereby reducing heat generation at the cable connection and improving overall durability. Furthermore, during installation, the bolt end can be engaged between two U-shaped bends, which limit the bolt's position. This eliminates the need for a wrench to position the bolt during nut tightening, making operation more convenient in confined spaces.

[0018] By setting up a square plate, the contact area between the U-shaped bend and the air can be increased again, thereby improving heat dissipation. Secondly, the square plate can also increase the contact area with the contact plate, thereby improving the conductivity between the contact plate and the mounting plate, preventing overheating at the connection point, and improving the safety of use.

[0019] By setting a limiting component, during use, the servo drives the limiting block to rotate, causing the limiting block to adhere to the contact plate. During this process, the contact plate moves towards the mounting plate until it adheres to the square plate and the mounting plate, and the mounting plate communicates with the contact plate. At the same time, after the contact plate adheres to the side of the cable strip, the reaction force provided by the cable strip acts on the first insulating plate, and then acts on the hook part through the mounting plate, thereby making the hook part adhere more closely to the cable strip. If the bolts become loose, the above method can prevent the mounting plate from generating high temperatures due to loose bolts in a short time, improving overall safety. If the high temperature persists for a period of time without being resolved, the servo rotates to cause the limiting block to disengage from the contact block, and the spring plate drives the contact plate to disengage from the square plate and the mounting plate. At this time, the power supply can be directly cut off, thereby preventing the contact plate from continuing to heat up and fundamentally avoiding fires caused by high temperatures, further increasing safety. At the same time, when the spring plate slides between the two square plates, the spring plate itself can guide and limit the movement of the contact plate, making the movement of the contact block more stable.

[0020] By setting insulating side strips, when the spring moves between the blocks, the cooperation between the insulating side strips and the insulating plate can prevent the spring from contacting the power supply on the busbar, and the power cut-off is more thorough when the power is cut off at high temperature.

[0021] By setting a positioning groove, the limiting block is located in the positioning groove during use, preventing the limiting block from rotating at will and improving the stability of the positioning block. It is fixed by snap-fit, which can avoid loosening due to vibration, making the whole process safer during use.

[0022] By providing an extension that wraps around the surface of the mounting plate, the connection area between the insulation board and the mounting plate can be increased, thereby improving the connection stability of the mounting plate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 3 This is a schematic diagram of the structure at the limiting block of the present invention; Figure 4 This is a schematic diagram of the mounting plate structure of the present invention; Figure 5 This is a schematic diagram of the mounting hole structure of the present invention; Figure 6 This is a schematic diagram of the servo mechanism structure of the present invention; Figure 7 This is a schematic diagram of the positioning groove structure of the present invention; Figure 8 This is a schematic diagram of the spring clip structure of the present invention; Figure 9 This is a schematic diagram of two structural features of the insulating plate of the present invention.

[0024] In the diagram: 1. Branch box body; 2. Cable strip; 3. Temperature sensor; 4. Connecting frame mechanism; 5. Mounting plate; 6. Hanging part; 7. U-shaped bend; 8. Square plate; 9. Contact plate; 10. Connecting pipe; 11. Limiting assembly; 12. Insulation plate one; 13. Extension part; 14. Through hole; 15. Servo motor; 16. Limiting block; 17. Positioning groove; 18. Spring; 19. Mounting part; 20. Insulating side strip; 21. Insulation plate two; 22. Mounting hole.

[0025] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0026] The status monitoring device for a cable branch box provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0027] like Figures 1-9 As shown, an embodiment of the present invention provides a status monitoring device for a cable branch box, including a branch box body 1, a plurality of cable trays 2 installed inside the branch box body 1 via terminal blocks, and a plurality of fixing holes formed on the surface of the cable trays 2, and further including: The connecting frame mechanism 4 includes a mounting plate 5 with mounting holes 22 on its surface, corresponding to fixing holes. Bolts pass through the mounting holes 22 and fixing holes, and nuts are threaded onto the bolts, fitting against the surface of the cable tray 2. A contact plate 9 is provided on the side plate of the mounting plate 5, with a connecting pipe 10 integrally formed on its surface. A temperature sensor 3 is embedded in the surface of the contact plate 9 to monitor the temperature at the cable tray 2. The branch box body 1 serves as the overall protection and installation carrier for the equipment, providing a sealed installation environment for the internal cable tray 2 and monitoring structure. The cable tray 2 is a cable conduction connection component, with fixing holes on its surface for bolts to secure the external structure. The connecting frame mechanism 4 is an integrated structure for the core installation, conduction, and monitoring of the device, supporting all monitoring and protection components. The mounting plate 5 is the main support structure of the connecting frame mechanism 4, used for docking and fixing. The mounting plate 5 and the cable tray 2 are fixed together with the mounting holes 22 and the fixing holes of the cable tray 2. The mounting plate 5 and the cable tray 2 are detachably and rigidly fixed by bolts and nuts to ensure the stability of the installation structure. The contact plate 9 is a conductive docking structure to realize the circuit conduction between the external cable and the cable tray 2. The connecting tube 10 is integrally formed on the contact plate 9 and is used to insert the external cable. The cable is clamped and fixed by extrusion deformation to prevent the cable from loosening and falling off or poor contact. The temperature sensor 3 is embedded in the surface of the contact plate 9. It does not require auxiliary straps for fixation and can collect temperature data at the connection of the cable tray 2 at close range and in real time. It can accurately detect the temperature rise fault caused by loose bolts, excessive contact gaps, and circuit overload, effectively avoiding the defects of traditional external sensors that are easy to fall off and have low monitoring accuracy, and improving the stability and accuracy of equipment operation monitoring. The mounting plate 5 and the contact plate 9 are made of the same material as the cable tray 2, which is copper.

[0028] like Figures 2-6 As shown in this embodiment, the mounting plate 5 is fixed with a hook part 6 at its end. The mounting plate 5 is fixed with the hook part 6, which is attached to the side of the cable tray 2. The hook part 6 is fixed to the end of the mounting plate 5 and serves as an auxiliary structure for installation and positioning.

[0029] like Figures 2-6As shown in this embodiment, the mounting plate 5 has two U-shaped bends 7 integrally formed on the side away from the cable tray 2. The two U-shaped bends 7 are symmetrically arranged about the mounting hole 22. The end of the bolt is located between the two U-shaped bends 7. After the bolt is assembled, the bolt end is limited and engaged between the two U-shaped bends 7. The circumferential rotation of the bolt is restricted by the wrapping and limiting effect of the bending structure. No additional wrench is needed to fix the bolt during the nut tightening process, simplifying the assembly operation in a confined space. At the same time, the bending extension structure of the U-shaped bends 7 greatly increases the convective contact area between the mounting plate 5 and the air, which can quickly dissipate the accumulation generated at the connection of the cable tray 2. The heat dissipation function reduces the risk of high-temperature overload in the circuit, slows down structural aging, and improves the long-term durability and safety of the equipment. Multiple square plates 8 are fixed on the opposite sides of the two U-shaped bends 7. The square plates 8 are perpendicular to the U-shaped bends 7 and are fixed vertically to the outside of the U-shaped bends 7, further increasing the overall heat dissipation surface area, enhancing the air convection heat dissipation effect, quickly dissipating the working heat of the circuit, and avoiding heat accumulation that could lead to high-temperature failures. At the same time, the square plates 8 increase the contact area between the mounting plate 5 and the contact plate 9, optimize the conductive path, reduce contact resistance, reduce the risk of overheating and arcing at the contact surface, and improve the stability and safety of the circuit conduction.

[0030] like Figure 2As shown in this embodiment, a limiting component 11 is provided on the side of the mounting plate 5. The limiting component 11 is used to install the contact plate 9. The limiting component 11 includes an insulating plate 12 fixed to the side of the mounting plate 5. A through hole 14 is opened on the surface of the insulating plate 12. The contact plate 9 is movably connected in the through hole 14. A servo motor 15 is fixed on the surface of the insulating plate 12. The output shaft of the servo motor 15 movably passes through the insulating plate 12 and is fixedly connected to a limiting block 16. A spring piece 18 is provided on the surface of the mounting plate 5. The spring piece 18 is located between adjacent square plates 8 and fits against the U-shaped bend 7. The surface of the spring contact 18 is coated with an insulating layer, which can block the communication between the spring contact 18 and the U-shaped bend 7 and the square plate 8. The insulating layer is made of epoxy resin. In use, the limiting block 16 is attached to the surface of the contact plate 9, and the contact plate 9 is attached to the square plate 8 and the mounting plate 5. At high temperature, the limiting block 16 detaches from the contact plate 9, and the spring contact 18 drives the contact plate 9 to detach from the square plate 8 and the mounting plate 5. The insulating plate 12 is the insulating mounting base of the limiting assembly 11, which isolates the live structure from the control components and prevents leakage and short circuit. The through hole 14 provides horizontal movement guidance for the contact plate 9. The channel restricts the movement trajectory of the contact plate 9, ensuring smooth and unbiased movement. The servo motor 15 is an electrically driven component used to precisely rotate the limit block 16, achieving limit locking and unlocking. The limit block 16 presses against the limit contact plate 9, ensuring contact plate 9 is in contact and conductive under normal conditions. The spring 18 is an elastic energy storage and reset component; in its stored state, it can provide reverse thrust. During normal operation, the servo motor 15 drives the limit block 16 to rotate and press against the contact plate 9, pushing the contact plate 9 along the through hole 14 to contact the square plate 8 and mounting plate 5, maintaining stable circuit conductivity. Simultaneously, the cable tray 2... The reverse force can strengthen the fit of the hook part 6, compensate for the gap caused by slight loosening of the bolts, and avoid instantaneous high temperature failure. When the temperature sensor 3 detects a continuous high temperature failure, the servo motor 15 drives the limit block 16 to rotate and disengage from the contact plate 9, release the limit constraint, and the stored spring 18 rebounds and exerts force to push the contact plate 9 away from the conductive contact surface, quickly cut off the circuit, and eliminate the hidden dangers of continuous high temperature, arcing and fire from the root. At the same time, the spring 18 slides between the square plates 8, which can guide and limit the contact plate 9 to ensure stable and smooth separation action. like Figure 7 As shown in this embodiment, the surface of the contact plate 9 is provided with an arc-shaped positioning groove 17. In use, the limiting block 16 is snapped into the positioning groove 17. The end of the limiting block 16 is arc-shaped. After the limiting block 16 rotates, it is snapped into the positioning groove 17. The arc-shaped structure can achieve adaptive fitting and positioning, limiting the horizontal displacement and loosening of the contact plate 9, while resisting the displacement caused by the vibration of the equipment operation, and avoiding the contact plate 9 from loosening and poor contact after long-term operation. The snap-fit ​​limiting structure has stronger stability. Compared with the flat pressing limiting, it can effectively prevent the limiting failure caused by the vibration of the working condition, ensure the stable conduction of the circuit under normal conditions, and improve the reliability of the equipment operation. like Figure 9As shown in this embodiment, the end of the insulating plate 12 is integrally formed with an extension 13. The extension 13 is fixed to the surface of the mounting plate 5. The extension 13 increases the contact and fixing area between the insulating plate 12 and the mounting plate 5, disperses the stress generated by the limiting component 11 during operation, avoids the insulating plate 12 from loosening, falling off, or cracking under stress, strengthens the overall installation firmness of the limiting component 11, ensures the working accuracy and stability of the servo motor 15 and the limiting block 16, and extends the overall service life of the equipment.

[0031] like Figure 8 As shown in this embodiment, the end of the spring 18 is integrally formed with a mounting part 19. The mounting part 19 is fixed to the surface of the contact plate 9 by screws. The mounting part 19 is locked and fixed to the surface of the contact plate 9 by screws, realizing the connection between the spring 18 and the contact plate 9. This allows the elastic thrust of the spring 18 to be completely and accurately transmitted to the contact plate 9, ensuring that the contact plate 9 quickly detaches from the conductive area after high-temperature unlocking. This avoids problems such as incomplete power disconnection and jamming failure caused by loose connection, and improves the reliability and accuracy of fault protection action.

[0032] like Figure 8 and Figure 9 As shown in this embodiment, insulating strips 20 are fixed on opposite sides of the spring piece 18. The insulating strips 20 are slidably connected to the surface of the square plate 8. An insulating plate 21 is fixed on the surface of the U-shaped bend 7 and between adjacent square plates 8. The spring piece 18 is attached to the surface of the insulating plate 21, and the insulating plate 21 is attached to the bottom of the spring piece 18, isolating the spring piece 18 from the live structure of the U-shaped bend 7 and preventing the spring piece 18 from conducting electricity and leaking current. The insulating strips 20 slide against the square plate 8. During the extension and retraction of the spring piece 18 and the movement of the contact plate 9, the live parts and the elastic structure are isolated throughout the process. Together with the insulating plate 12, an all-round insulation system is formed to ensure that after the high-temperature power-off action is completed, the line is completely disconnected without leakage current, eliminating residual voltage and partial discharge hazards, and greatly improving the safety of equipment fault protection. At the same time, after the contact plate 9 is separated from the U-shaped bend 7, the square plate 8 and the mounting plate 5, if the spring piece 18 accidentally touches the U-shaped bend 7, the square plate 8 and the mounting plate 5, the insulation layer can also play an isolation role to ensure safety.

[0033] Working principle: The external cable is inserted into the connecting tube 10 on the surface of the contact plate 9. The connecting tube 10 is flattened by a tool to complete the cable connection and prevent the cable from loosening and falling off. The hanging part 6 at the end of the mounting plate 5 is attached to the side of the cable strip 2 to complete the quick positioning and make the mounting hole 22 of the mounting plate 5 precisely aligned with the fixing hole of the cable strip 2. The bolt is passed through the mounting hole 22 and the fixing hole and locked with the nut. The end of the bolt is limited between the two U-shaped bends 7. There is no need to use a wrench to position the bolt. It is suitable for the narrow installation space inside the branch box and improves the convenience of installation. After the equipment is installed, start the servo motor 15 on the top of the insulation plate 12. The servo motor 15 drives the limit block 16 to rotate, so that the arc-shaped end of the limit block 16 is inserted into the arc-shaped positioning groove 17 of the contact plate 9. The locking structure achieves stable positioning and avoids loosening due to equipment vibration. The limit block 16 presses against the contact plate 9, so that the contact plate 9 fits tightly against the square plate 8 and the mounting plate 5, realizing the structural passage. The cable strip 2 is subjected to force and generates a reverse force, which is transmitted to the insulation plate 12 and the mounting plate 5, further pressing the hook part 6 and the cable strip 2, improving the overall tightness of the fit. During normal operation of the equipment, the temperature sensor 3 embedded on the surface of the contact plate 9 continuously monitors the temperature at the connection of the cable tray 2 in real time. It can accurately detect the potential overheating caused by loose bolts or poor contact, thus improving the accuracy of monitoring. At the same time, the U-shaped bend 7 and the square plate 8 set vertically on the surface of the device greatly increase the heat dissipation area of ​​the equipment, quickly dissipate the heat accumulated at the connection of the cable tray 2, and reduce the probability of high temperature failure. The square plate 8 also increases the contact conductive area between the contact plate 9 and the mounting plate 5, avoids overheating at the contact point, and improves the safety and durability of the equipment operation. If the fixing bolts of the cable tray 2 become slightly loose during equipment operation, the gap caused by the loose bolts can be quickly filled by the clamping limit of the hanging part 6 and the tight fit between the contact plate 9 and the square plate 8. This avoids poor contact between the mounting plate 5 and the cable tray 2, which can generate local high temperature, effectively avoid the risk of instantaneous failure, and allow sufficient time for staff to troubleshoot and repair. When the temperature sensor 3 detects that the output line 2 is continuously overheated and the fault is not dealt with in time, the control system triggers the servo motor 15 to rotate in the opposite direction, which drives the limit block 16 to disengage from the positioning groove 17 of the contact plate 9, completely releasing the limit constraint on the contact plate 9. At this time, the stored spring 18 rebounds and exerts force, pushing the contact plate 9 to quickly disengage from the square plate 8 and the mounting plate 5, cutting off the equipment's conductive circuit and realizing active power cut-off. During the movement of the spring 18, the insulating side strips 20 on both sides, together with the first insulating plate 12 and the second insulating plate 21, form all-round insulation and isolation, ensuring complete power cut-off, eliminating leakage and continuous heating problems, and preventing electrical fires caused by high temperature from the root cause. After the staff investigated and dealt with the overheating fault of cable tray 2, and the equipment temperature returned to normal, the servo motor 15 was rotated again, so that the limit block 16 was re-engaged into the positioning groove 17 of the contact plate 9, pressing and fixing the contact plate 9. The contact plate 9 was then attached to the square plate 8 and the mounting plate 5 again, the equipment was restored to the conductive state, the normal temperature monitoring function was restarted, and the real-time status monitoring of cable tray 2 inside the branch box continued.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A status monitoring device for a cable branch box, comprising a branch box body (1), wherein multiple cable trays (2) are installed inside the branch box body (1) via terminal blocks, and multiple fixing holes are provided on the surface of the cable trays (2), characterized in that, Also includes: The connecting frame mechanism (4) includes a mounting plate (5). The mounting plate (5) has mounting holes (22) on its surface. The mounting holes (22) correspond to the fixing holes. Bolts pass through the mounting holes (22) and fixing holes. Nuts are threaded onto the surface of the bolts. Nuts fit against the surface of the cable strip (2). A contact plate (9) is provided on the side plate of the mounting plate (5). A connecting tube (10) is integrally formed on the surface of the contact plate (9). A temperature sensor (3) is embedded on the surface of the contact plate (9). The temperature sensor (3) is used to monitor the temperature at the cable strip (2).

2. The status monitoring device for cable branch boxes according to claim 1, characterized in that, The mounting plate (5) is fixed with a hook part (6) at its end. The mounting plate (5) is fixed with the hook part (6) which is attached to the side of the line (2).

3. The status monitoring device for cable branch boxes according to claim 2, characterized in that, The mounting plate (5) has two U-shaped bends (7) integrally formed on the side away from the cable tray (2). The two U-shaped bends (7) are symmetrically arranged about the mounting hole (22), and the end of the bolt is located between the two U-shaped bends (7).

4. The status monitoring device for cable branch boxes according to claim 3, characterized in that, Multiple square plates (8) are fixed on the opposite sides of the two U-shaped bends (7), and the multiple square plates (8) are arranged perpendicularly to the U-shaped bends (7).

5. The status monitoring device for cable branch boxes according to claim 4, characterized in that, The mounting plate (5) is provided with a limiting component (11) on its side, which is used to install the contact plate (9).

6. The status monitoring device for cable branch boxes according to claim 5, characterized in that, The limiting component (11) includes an insulating plate (12) fixed to the side of the mounting plate (5). The insulating plate (12) has a through hole (14) on its surface. The contact plate (9) is movably connected in the through hole (14). A servo motor (15) is fixed on the surface of the insulating plate (12). The output shaft of the servo motor (15) moves through the insulating plate (12) and is fixedly connected to a limiting block (16). A spring piece (18) is provided on the surface of the mounting plate (5). The spring piece (18) is located between adjacent square plates (8) and fits against the surface of the U-shaped bend (7). When in use, the limiting block (16) fits against the surface of the contact plate (9). The contact plate (9) fits against the square plate (8) and the mounting plate (5). When the temperature is high, the limiting block (16) disengages from the contact plate (9), and the spring piece (18) drives the contact plate (9) to disengage from the square plate (8) and the mounting plate (5).

7. The status monitoring device for cable branch boxes according to claim 6, characterized in that, The end of the spring (18) is integrally formed with a mounting part (19), which is fixed to the surface of the contact plate (9) by screws.

8. The status monitoring device for cable branch boxes according to claim 6, characterized in that, Insulating strips (20) are fixed on opposite sides of the spring piece (18). The insulating strips (20) are slidably connected to the surface of the square plate (8). An insulating plate (21) is fixed on the surface of the U-shaped bend (7) and between adjacent square plates (8). The spring piece (18) is attached to the surface of the insulating plate (21).

9. The status monitoring device for cable branch boxes according to claim 6, characterized in that, The surface of the contact plate (9) is provided with an arc-shaped positioning groove (17). When in use, the limiting block (16) is engaged in the positioning groove (17), and the end of the limiting block (16) is arc-shaped.

10. The status monitoring device for cable branch boxes according to claim 6, characterized in that, The end of the insulating plate (12) is integrally formed with an extension (13), which is fixed to the surface of the mounting plate (5).

Images