A line isolation disconnect over-temperature warning device

Abstract

The application discloses a line isolation switch super-temperature warning device, which comprises a transparent and insulating shell, a first automatic locking mechanism and a second automatic locking mechanism arranged at two ends of the shell respectively, and a warning device arranged in the shell; the first automatic locking mechanism comprises linkage of a first ring structure and a second ring structure; a first-level guide fixing hook and a second-level guide fixing hook are arranged on a sub-clamping sheet; a main clamping sheet and the sub-clamping sheet are combined to form two semicircular clamping ports for locking a left porcelain bottle; the second automatic locking mechanism is provided with a clamping sheet with a semicircular notch to combine and lock a right porcelain bottle; when the shell is pushed, the right porcelain bottle can first pass through the first automatic locking mechanism; the combined main clamping sheet can slide through a strip-shaped groove to adapt to the distance between the porcelain bottles; a temperature measuring module is attached to the switch to measure the temperature in real time; after the temperature exceeds the normal range, light remote early warning is realized; manual distance measurement is not needed; the switch can be installed with a stick while being electrified; the switch is suitable for various double porcelain bottle switches and solves the problems of low efficiency of manual inspection, easy jamming of traditional clamping buckles and poor axle distance adaptation.

Description

Technical Field

[0001] This invention relates to an over-temperature warning device for a line isolating switch, and more specifically, to an online temperature measurement and over-temperature warning device suitable for a double-porcelain insulator supported line isolating switch, belonging to the field of housing manufacturing technology for high-voltage power line monitoring. Background Technology

[0002] High-voltage line isolating switches are core safety devices in power systems. They rely on air insulation gaps to create a visible disconnection point and are simple in structure and inexpensive, leading to their widespread use in distribution networks. However, the contact resistance of the isolating switch's moving and stationary contacts increases over time, making them prone to overheating under heavy loads. Therefore, maintenance personnel must regularly inspect and monitor their temperature.

[0003] The existing technology has the following drawbacks: Temperature measurement relies on manual inspections using ground-based infrared thermometers and thermal imagers, which is labor-intensive, has incomplete coverage, and is delayed, making it impossible to monitor potential fever risks in real time. The isolating switch has a compact metal structure and generates significant vibration and impact when opening and closing, making it difficult to install conventional temperature measurement equipment stably. For isolating switches supported by double porcelain insulators, traditional transverse clamp-type temperature measuring devices require prior measurement of the wheel distance between the two porcelain insulators, resulting in poor adaptability, large installation volume, and difficulty in live installation and operation of the middle phase and outer line switches. Traditional locking mechanisms lock once the first porcelain insulator is passed through, making it impossible to simultaneously cover the isolation switches below the two porcelain insulators, thus limiting the monitoring range. Summary of the Invention

[0004] The purpose of this invention is to provide an over-temperature warning device for a line isolating switch, which solves the problems of low efficiency in manual temperature monitoring of existing isolating switches, inability of traditional fixed structures to adapt to different porcelain insulator spacings, locking upon passing through the first porcelain insulator, and high risk of installation at height with live equipment. The invention achieves adaptive axial spacing assembly, allows the right porcelain insulator to be passed through first and then the left porcelain insulator to be locked, and provides real-time temperature measurement and long-distance audible and visual warning.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: This invention discloses an over-temperature warning device for a circuit isolating switch, comprising a transparent and insulated housing. A first automatic locking mechanism and a second automatic locking mechanism are respectively connected to the left and right ends of the opening of the housing. Moving the housing from right to left allows the first and second automatic locking mechanisms to engage with two porcelain insulators, with the housing covering the isolating switch connected to the lower ends of the two insulators. A mounting plate is connected inside the housing near the second automatic locking mechanism, and a warning device is connected to the mounting plate. The warning device monitors the temperature of the isolating switch and provides real-time warning feedback.

[0006] Preferably, the housing includes a top plate and side plates connected to the front and rear edges of the top plate. The top plate and the side plates form a space for housing an isolating switch. The opening of the housing is a slot opened on the top plate. From right to left, the slot can be used to insert porcelain insulators at the right and left ends in sequence. The first automatic locking mechanism and the second automatic locking mechanism are respectively connected to the top plate outside the slot. The right ends of the two side plates are provided with symmetrical insertion interfaces. Through the insertion interfaces, tools such as links can be easily connected, which facilitates low-altitude long-distance operation of the housing movement to achieve live installation.

[0007] Preferably, the No. 1 automatic locking mechanism includes a No. 1 clamping ring structure and a No. 2 clamping ring structure with identical structures. The No. 1 clamping ring structure and the No. 2 clamping ring structure are respectively connected to the top plates on the corresponding sides of the slot and cooperate in linkage. The No. 1 clamping ring structure includes a main locking piece that fits against the top plate. A strip-shaped groove is opened laterally on the main locking piece. A No. 1 countersunk rivet passes through the strip-shaped groove and fits against both sides of the top of the strip-shaped groove to prevent the main locking piece from detaching from the top plate. The lower end of the No. 1 countersunk rivet is rotatably connected to the top plate to realize the main locking piece is movably connected to the top plate. A No. 1 side limiting plate is connected to the outer edge of the main locking piece. Rotating the main locking piece can make the No. 1 side limiting plate press against the side plate of the housing. A No. 1 cut is provided at the right corner of the main locking piece located at the slot. The second retaining ring structure also includes a secondary retaining piece located above the main retaining piece. The secondary retaining piece is rotatably connected to the right end of the main retaining piece via a countersunk rivet. The gap between the main retaining piece and the secondary retaining piece allows the countersunk rivet to slide in. A second side limiting plate is connected to the outer edge of the secondary retaining piece. A primary guide fixing hook and a secondary guide fixing hook are connected to the right end of the secondary retaining piece. The primary guide fixing hook is located to the right of the secondary guide fixing hook, and an obtuse-angled opening is formed between the inner edge of the primary guide fixing hook and the outer edge of the secondary guide fixing hook. Moving the housing towards the left, the periphery of the umbrella skirt on the right-end porcelain bottle abuts against the tops of the two primary guide fixing hooks, triggering... The two auxiliary locking pieces rotate toward the side plate. When the inner sides of the two primary guide fixing hooks are parallel and tangent to the circumference of the umbrella skirt on the right end of the porcelain bottle, the second side limiting plate fits against the first side limiting plate, and the first cut and the inner side of the secondary guide fixing hook are joined together to form a semi-circular locking opening. The shell continues to move toward the left end, and the circumference of the umbrella skirt on the left end of the porcelain bottle is pressed against the inner side of the secondary guide fixing hook on the auxiliary locking piece. Since the second side limiting plate on the auxiliary locking piece presses against the first side limiting plate on the main locking piece, the main locking piece and the auxiliary locking piece rotate toward the left end of the porcelain bottle at the same time, until the two semi-circular locking openings on the first and second ring structures are engaged on the circumference of the umbrella skirt on the left end of the porcelain bottle.

[0008] The specific structural relationship for achieving the engagement change is as follows: When the secondary engagement piece is fully extended, the distance between the outer edges of the two secondary guide fixing hooks is greater than the outer diameter of the circumference of the right-end porcelain bottle's umbrella skirt. Therefore, when the housing is moved, the circumference of the right-end porcelain bottle's umbrella skirt will not press against the secondary guide fixing hooks, allowing the right-end porcelain bottle to first enter between the outer edges of the two secondary guide fixing hooks. Since the distance between the tops of the two primary guide fixing hooks is less than the circumference of the umbrella skirt, when the housing continues to move, the tops of the two primary guide fixing hooks will first be pressed against the circumference of the right-end porcelain bottle's umbrella skirt, triggering the rotation of the secondary engagement piece. Since both secondary engagement pieces rotate towards the side plate, the outer edges of the secondary guide fixing hooks will gradually contact the circumference of the right-end porcelain bottle's umbrella skirt. Gradually, the inner edges of the primary guide fixing hooks and the outer edges of the secondary guide fixing hooks will be tangent to the circumference of the right-end porcelain bottle's umbrella skirt, meaning the two obtuse-angled openings are just positioned above and below the circumference of the umbrella skirt (e.g., Figure 6 (As shown in the diagram); continue moving the housing to the left, the inner side of the primary guide fixing hook will be pressed against the circumference of the right-end porcelain bottle's umbrella skirt, triggering the rotation of the secondary locking piece. Simultaneously, the outer side of the secondary guide fixing hook will move to the right, pushing the circumference of the right-end porcelain bottle's umbrella skirt until the inner sides of the two primary guide fixing hooks are parallel. At this point, the circumference of the right-end porcelain bottle's umbrella skirt no longer contacts the inner side of the primary guide fixing hook, and the secondary guide fixing hook is fully closed (as shown in the diagram). Figure 2 As shown), the outer edge of the subsequent secondary guide fixing hook gradually separates from the circumference of the right end porcelain bottle skirt (as shown). Figure 10 As shown), at this time, the second side limiting plate on the secondary card plate is attached to the first side limiting plate on the main card plate. Therefore, as the housing continues to move, the first-level guide fixing hook no longer presses against the circumference of the right-end porcelain bottle umbrella skirt, and the circumference of the right-end porcelain bottle umbrella skirt will not hook the second-level guide fixing hook. The right-end porcelain bottle can pass smoothly through the first automatic locking mechanism.

[0009] Preferably, when the two semi-circular snap-fits on the first and second snap-fit ​​structures engage with the circumference of the umbrella skirt on the left-end porcelain bottle, the housing continues to move towards the left end. The circumference of the umbrella skirt on the left-end porcelain bottle will push the auxiliary snap-fit ​​piece to drive the main snap-fit ​​piece to slide along the strip groove towards the right end of the housing. After sliding, the main snap-fit ​​piece can be held against the side plate by the first side limiting plate to prevent the main snap-fit ​​piece from rotating around the first countersunk rivet, thereby preventing the two semi-circular snap-fits from separating.

[0010] Preferably, when the first countersunk rivet is located at the rightmost end of the strip groove, the main locking piece can be rotated outward to unfold, and the right end of the first side limiting plate can abut against the outer surface of the side plate to prevent the main locking piece from unfolding too much; when the secondary locking piece unfolds and the top spacing of the first-level guide fixing hook is at its minimum, the second side limiting plate can abut against the outer surface of the side plate to prevent the secondary locking piece from unfolding too much.

[0011] Preferably, the inner end of the main card assembly is connected to a first protrusion, and the right end of the first protrusion is provided with a chamfer to facilitate the main card assembly to drive the first protrusion to climb up the top plate and enter the slot on the top plate; when the right end of the first side limiting plate can abut against the outer surface of the side plate, the chamfer on the first protrusion abuts against the outer surface of the side plate at the same time to stabilize and maintain the unfolded state of the main card assembly.

[0012] Preferably, the left end of the main card assembly piece is connected to a second protrusion. The front end of the second protrusion piece has a chamfer to facilitate the main card assembly piece climbing onto the top plate for quick assembly. After the two main card assemblies are assembled, the end of the second protrusion piece facing away from the side plate on each main card assembly piece can hook onto the edge of the slot, and the first side limiting plate on the main card assembly piece abuts against the side plate to prevent the two main card assemblies from separating. One design to achieve the structure: the distance between the end of the second protrusion piece facing away from the chamfer and the first side limiting plate on the main card assembly piece is distance A, and the distance between the edge of the slot and the adjacent side plate is distance B. Distance A and distance B are the same size. When the two semi-circular latches on the first and second clamping ring structures are engaged on the porcelain bottle, the second protrusion piece can just abut against the edge of the slot to prevent the two semi-circular latches on the first and second clamping ring structures from separating.

[0013] Preferably, the second automatic locking mechanism includes two clamping plates with identical structures. A third side limiting plate is connected to the outer edge of each clamping plate. The two clamping plates are rotatably connected to the top plates on both sides of the slot via countersunk rivets. Each clamping plate has a semi-circular notch. When the housing moves towards the left, the porcelain bottle on the right end can abut against the edge of the semi-circular notch, triggering the two clamping plates to rotate and clamp onto the circumference between the porcelain bottle's umbrella-shaped skirt. The right end of the slot has a semi-circular edge. When the two clamping plates... After the pieces are assembled, the semi-circular cuts on the clips form a circle, and the right edge of this circle coincides with the right semi-circular edge of the slot. The left edge of the clip is connected to a No. 4 protrusion. When two clips are assembled, the end of the No. 4 protrusion on each clip that faces away from the side plate hooks onto the edge of the slot, and the No. 3 side limiting plate on the clip fits against the side plate to prevent the two clips from separating. The end of the No. 4 protrusion facing the side plate is provided with a chamfer to facilitate the clips climbing onto the top plate to achieve quick assembly of the clips.

[0014] Preferably, the inner end of the clamping piece is connected to a third protrusion, and the right end of the third protrusion is provided with a chamfer to facilitate the clamping piece to drive the third protrusion to climb up the top plate and enter the slot on the top plate; when the two clamping pieces are unfolded, the right end of the third side limiting plate can abut against the outer surface of the side plate, and the chamfer on the third protrusion abuts against the outer surface of the side plate at the same time to stabilize and maintain the unfolded state of the clamping pieces.

[0015] Preferably, the warning device includes a temperature measuring module, a power supply module, and a warning light module that are electrically connected. The power supply module includes a solar panel and a battery capable of storing electrical energy. The temperature measuring module can contact the isolating switch to measure the temperature in real time.

[0016] Beneficial effects: Real-time dual audible and visual warning: The temperature measurement module is close to the metal contact of the isolation switch. It accurately collects the operating temperature by relying on the heat conduction of the metal. When the temperature exceeds the standard, the LED flashing light is combined with the horn buzzer alarm. Patrol vehicles and ground maintenance personnel can identify it from a distance, which greatly reduces the frequency of manual inspection and eliminates the hidden danger of temperature measurement lag. Adaptive porcelain insulator spacing assembly: The main locking plate of the No. 1 automatic locking mechanism can slide laterally along the strip groove. There is no need to measure the center distance between the two sets of porcelain insulators in advance during installation. It can be adapted to different specifications of double porcelain insulator isolation switches, making it more versatile. Two-stage guide bottle-passing locking structure: Through the staggered layout of the first-stage guide fixing hook and the second-stage guide fixing hook, the right-end porcelain bottle can smoothly pass through the No. 1 automatic locking mechanism during the process of pushing the shell to the left, without locking in the middle. The device finally locks the left and right porcelain bottles respectively, completely covering the isolation gate, solving the defect of the traditional buckle locking as soon as it passes through the porcelain bottle and not being able to cover the double porcelain bottle gate at the same time. Ground-based long-distance live-line installation: The side plate end is equipped with a plug interface, which can be directly connected to the linker. The operator can lift and push the device to complete the live-line assembly at high altitude while standing on the ground, without the need to climb to a height, which greatly reduces the safety risks of electric shock and fall from height. Multiple self-locking anti-loosening structure: After each locking piece is closed, it relies on the protrusion to hook the edge of the slot and the limit plate to abut against the side plate for double limiting. After locking, it can resist the vibration of the opening and closing of the knife switch and the impact of wind. It is not easy to loosen during long-term operation and has strong working stability. Transparent insulating housing design: The housing is made of insulating transparent material, which will not obstruct the visible disconnection point of the isolating switch, while also having insulation protection capabilities, effectively avoiding the risk of phase-to-phase short circuits and leakage, and complying with the safety operation specifications of high-voltage lines. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fully unfolded structure of the present invention.

[0018] Figure 2 This is one of the structural schematic diagrams of the present invention.

[0019] Figure 3 This is the second schematic diagram of the structure of the present invention.

[0020] Figure 4 This is the third schematic diagram of the structure of the present invention.

[0021] Figure 5 This is one of the partial structural schematic diagrams of the present invention.

[0022] Figure 6 This is the second partial structural schematic diagram of the present invention.

[0023] Figure 7 This is a schematic diagram of the initial installation stage of the present invention.

[0024] Figure 8 This is a schematic diagram of the first stage of the push process of this invention.

[0025] Figure 9 This is a schematic diagram of the second stage of the push process of the present invention.

[0026] Figure 10 This is a schematic diagram of the third stage of the push process of this invention.

[0027] Figure 11 This is a schematic diagram of the fourth stage of the push process of this invention.

[0028] Figure 12 This is a schematic diagram of the closing and locking of the No. 1 automatic locking mechanism of the present invention.

[0029] Figure 13 This is a schematic diagram showing the simultaneous locking of the No. 1 automatic locking mechanism and the No. 2 automatic locking mechanism of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Porcelain insulator; 3. Isolation gate; 4. Mounting plate; 5. Top plate; 6. Side plate; 7. Groove; 8. Insertion interface; 9. Main clamping piece; 10. Strip groove; 11. Countersunk rivet No. 1; 12. Side limiting plate No. 1; 13. Cutout No. 1; 14. Countersunk rivet No. 2; 15. Secondary clamping piece; 16. Side limiting plate No. 2; 17. Primary guide fixing hook; 18. Secondary guide fixing hook; 19. Semi-circular bayonet; 20. Protrusion No. 1; 21. Protrusion No. 2; 22. Clamping piece; 23. Side limiting plate No. 3; 24. Countersunk rivet No. 3; 25. Semi-circular cutout; 26. Protrusion No. 4; 27. Protrusion No. 3; 101. Clamping ring structure No. 1; 102. Clamping ring structure No. 2. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0033] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Technical solution / principle: This invention provides an over-temperature warning device for a line isolating switch, comprising a housing 1 made of transparent insulating material (it should be noted that, except for the countersunk rivets which are preferably made of metal, other structural components are preferably made of insulating and transparent acrylic sheets). One of the inventive technical features of this application is the specific structural fit relationship of the engagement changes in the first clamping ring structure 101 and the second clamping ring structure 102, as follows: like Figure 1 , Figure 7 , Figure 8 As shown, both the main card assembly 9 and the secondary card assembly 15 are in a fully extended state. The distance between the outer edges of the two secondary guide fixing hooks 18 is greater than the outer diameter of the circumference of the right-end porcelain bottle 2 between its skirts. When the shell 1 first moves to the left, the circumference of the right-end porcelain bottle 2 between its skirts will not contact the outer edge of the secondary guide fixing hook 18. Therefore, the right-end porcelain bottle 2 will gradually enter between the outer edges of the two secondary guide fixing hooks 18 and wait for the top of the subsequent primary guide fixing hook 17 to contact the circumference of the porcelain bottle 2 between its skirts. Figure 1 , Figure 7 , Figure 8 As shown, the distance between the tops of the two primary guide fixing hooks 17 is less than the outer diameter (circumference) of the circumference of the right-end porcelain bottle 2 between the umbrella skirts. After the housing 1 continues to push to the left, the circumference of the right-end porcelain bottle 2 between the umbrella skirts will first abut against the primary guide fixing hook 17, thereby driving the secondary locking piece 15 to rotate. During the synchronous rotation of the two secondary locking pieces 15 towards the side plate 6, the outer edge of the secondary guide fixing hook 18 will gradually approach the circumference of the right-end porcelain bottle 2 between the umbrella skirts. If the housing 1 continues to be pushed to the left, the inner edge of the primary guide fixing hook 17 and the outer edge of the secondary guide fixing hook 18 will simultaneously abut against the circumference of the right-end porcelain bottle 2 between the umbrella skirts (e.g., ...). Figure 6 , Figure 9As shown in the diagram, the obtuse-angled opening formed by the two components is precisely sandwiched between the upper and lower sides of the circular perimeter of the porcelain vase's umbrella skirt (as shown in the diagram). Figure 6 and Figure 9 (As shown in the diagram). Then, continue pushing the housing 1 to the left, and the circumference of the right-end porcelain bottle 2 between the umbrella skirts will continue to press the inner side of the primary guide fixing hook 17 to make it rotate further. At the same time, the outer side of the secondary guide fixing hook 18 will push the right-end porcelain bottle 2 to the right (at this time, the outer side of the secondary guide fixing hook 18 will press the circumference of the right-end porcelain bottle 2 between the umbrella skirts to the right), until the inner sides of the two primary guide fixing hooks 17 are parallel (as shown in the diagram). Figure 2 As shown), at this time, the periphery of the right-end porcelain bottle 2 will disengage from the restriction of the primary guide fixing hook 17, and the secondary guide fixing hook 18 will also retract. The second side limiting plate 16 on the secondary card plate 15 is also attached to the first side limiting plate 12 of the main card plate 9. The first cut 13 and the inner side of the secondary guide fixing hook 18 are combined to form a semi-circular notch 19. In this state, if the shell 1 continues to move, the primary guide fixing hook 17 will no longer be squeezed by the right-end porcelain bottle 2, and the secondary guide fixing hook 18 will not hook the periphery of the porcelain bottle 2. As the shell 1 continues to be pushed to the left, the right-end porcelain bottle 2 can smoothly pass between the first ring structure 101 and the second ring structure 102, and the outer side of the secondary guide fixing hook 18 gradually separates from the right-end porcelain bottle 2 (as shown). Figure 10 As shown), this is to prepare for the subsequent triggering of the card to close the circular area between the left end porcelain bottle 2 umbrella skirt.

[0035] like Figures 11 to 13 As shown, when the two semi-circular latches 19 on the first clamping ring structure 101 and the second clamping ring structure 102 are engaged on the periphery of the umbrella skirt on the left end porcelain bottle 2, the housing 1 continues to move towards the left end. The periphery of the umbrella skirt on the left end porcelain bottle 2 will push the auxiliary latching piece 15 to drive the main latching piece 9 to slide along the strip groove 10 towards the right end of the housing 1 (the movement state based on the housing 1). Moreover, the main latching piece 9 after sliding can also be held against the side plate 6 by the first side limiting plate 12 to prevent the main latching piece 9 from rotating around the first countersunk rivet 11 and prevent the two semi-circular latches 19 from separating.

[0036] Another inventive technical feature of this application is that when the two semi-circular latches 19 engage with the periphery between the umbrella skirts on the left-end porcelain bottle 2, and the housing 1 continues to move towards the left end, the periphery between the umbrella skirts on the left-end porcelain bottle 2 will push the auxiliary latching piece 15, causing the main latching piece 9 to slide along the strip groove 10 along the housing. This allows the housing 1 to be moved to the left and trigger the two latching pieces 22 to engage even if the periphery between the umbrella skirts on the right-end porcelain bottle 2 has not yet fully engaged and locked when the left-end porcelain bottle and the right-end porcelain bottle are installed simultaneously, the position of the main latching piece 9 can be adjusted (i.e., by setting the position through the strip groove 10, so that the entire first automatic locking mechanism is displaced on the top plate 5) to provide sufficient displacement to the left for the housing 1, thus triggering the two latching pieces 22 to engage. This design eliminates the need for manual measurement and adjustment of the installation position before installation. It solves the problem in the market where the wheelbase between the two porcelain bottles needs to be set in advance for horizontal insertion. In this application, since the main card assembly 9 can slide laterally adaptively along the strip groove 10, in most cases, it is not necessary to measure the distance between the two porcelain insulators in advance on site, and it can adapt to different specifications of double porcelain insulator isolation switches, greatly improving the product's versatility; the first side limit plate 12 and the side plate 6 cooperate to form a limit support, which can also limit the rotation of the main card assembly 9 around the first countersunk rivet 11, and the semi-circular bayonet 19 will not be opened by external force after locking, resulting in stronger clamping stability; the assembly fault tolerance space is large, and even if the first automatic locking mechanism locks the left porcelain insulator 2 in advance, it will not affect the subsequent locking action of the right porcelain insulator 2, reducing the difficulty of live installation operation, and assembly can be completed by a single person using a linker.

[0037] When the countersunk rivet 11 is located at the rightmost end of the slot 10, the main clamping piece 9 can rotate outwards to unfold, and the right end of the first side limiting plate 12 can abut against the outer surface of the side plate 6 to prevent the main clamping piece 9 from unfolding too much. When the secondary clamping piece 15 unfolds and the top spacing of the first-level guide fixing hook 17 is at its minimum, the second side limiting plate 16 can abut against the outer surface of the side plate 6 to prevent the secondary clamping piece 15 from unfolding too much. The unfolding angles of the main clamping piece 9 and the secondary clamping piece 15 are precisely constrained by the limiting plates, preventing excessive outward turning and structural deformation, and enabling low-altitude live-line installation operations. In the unfolded state, the structure is automatically limited, eliminating the need for manual holding of the clamping parts before assembly, simplifying the high-altitude live-line installation operation process. The clamping parts open to a uniform size each time they are installed, ensuring smooth insertion of the porcelain insulator and avoiding jamming or sticking due to inconsistent opening sizes.

[0038] Furthermore, a protrusion 20 is connected to the inner end of the main card assembly 9. The right end of the protrusion 20 has a chamfer to facilitate the main card assembly 9 to drive the protrusion 20 up the top plate 5 and into the slot 7 on the top plate 5. When the right end of the first side limiting plate 12 can abut against the outer surface of the side plate 6, the chamfer on the protrusion 20 simultaneously abuts against the outer surface of the side plate 6 to stably maintain the unfolded state of the main card assembly 9. The chamfered structure of the protrusion 20 results in low frictional resistance and smooth, non-jamming sliding when the main card assembly 9 unfolds and slides. The first side limiting plate 12, together with the first protrusion 20, achieves two-point abutment against the side plate 6, forming a double support positioning, which maintains the main card assembly 9 in the maximum open posture for a long time. No manual support is required during the assembly process, avoiding the problem of the main card assembly 9 changing position before installation, and ensuring that the right end porcelain bottle 2 can pass smoothly between the first ring structure 101 and the second ring structure 102.

[0039] Furthermore, the left end of the main card assembly 9 is connected to a second protrusion 21. The front end of the second protrusion 21 is chamfered to facilitate the main card assembly 9 climbing onto the top plate 5 to achieve rapid assembly of the main card assembly 9. When the two main card assemblies 9 are assembled, the end of the second protrusion 21 on each main card assembly 9 facing away from the side plate 6 can hook onto the side of the slot 7, and the first side limiting plate 12 on the main card assembly 9 fits against the side plate 6, thus preventing the two main card assemblies 9 from separating. The specific structural settings to achieve this function are as follows: The distance between the second protrusion 21 on the main clamping plate 9 and the end facing away from the chamfered corner and the first side limiting plate 12 is distance A; the distance between the edge of the slot 7 and the adjacent side plate 6 is distance B. Distance A and distance B are the same size. This ensures that when the two semi-circular latches 19 on the first clamping ring structure 101 and the second clamping ring structure 102 are engaged on the porcelain bottle 2, the second protrusion 21 can precisely abut against the edge of the slot 7 to prevent the two semi-circular latches 19 on the first clamping ring structure 101 and the second clamping ring structure 102 from separating. The second protrusion 21 can precisely engage the edge of the slot 7, forming a two-way mechanical self-locking mechanism with the first side limiting plate 12, resisting the vibration of the switch and wind impact, preventing the clamp from loosening. After locking, the clamping ring structure is firmly positioned, and long-term outdoor operation will not result in latch loosening or device sagging, extending its service life.

[0040] Furthermore, the second automatic locking mechanism includes two clamping pieces 22 with identical structures. The outer ends of the clamping pieces 22 are connected to the third side limiting plate 23. The two clamping pieces 22 are rotatably connected to the top plates 5 on both sides of the slot 7 by the third countersunk rivets 24. The clamping pieces 22 are respectively provided with semi-circular cutouts 25. When the housing 1 moves towards the left end, the periphery of the right end porcelain bottle 2 between the umbrella skirts can abut against the edge of the semi-circular cutout 25 and trigger the two clamping pieces 22 to rotate and clamp onto the periphery of the right end porcelain bottle 2 between the umbrella skirts. In a specific preferred embodiment, the right end of the slot 7 is a semi-circular edge. When the two clamping pieces 22 are joined together, the semi-circular cutouts 25 on the clamping pieces 22 form a circle, and the right end of the circle coincides with the semi-circular edge of the right end of the slot 7.

[0041] Furthermore, the left end of the clamping piece 22 is connected to a fourth protrusion 26. When the two clamping pieces 22 are joined together, the end of the fourth protrusion 26 on each clamping piece 22 facing away from the side plate 6 hooks onto the edge of the slot 7, and the third side limiting plate 23 on the clamping piece 22 fits against the side plate 6, thus preventing the two clamping pieces 22 from separating. The end of the fourth protrusion 26 facing the side plate 6 is provided with a chamfer to facilitate the clamping piece 22 climbing onto the top plate 5 to achieve rapid joining of the clamping pieces 22. In this application, the two clamping pieces 22 are symmetrically arranged, and the semi-circular cut 25 fits completely with the semi-circular edge of the slot 7, completely wrapping the right end of the porcelain bottle 2. The clamping force is even, and there is no local squeezing or damage to the circumference of the umbrella skirt of the porcelain bottle 2. The chamfered design of the fourth protrusion 26 makes the clamping piece 22 close smoothly without jamming. The circumference of the umbrella skirt of the right end of the porcelain bottle 2 can be squeezed to automatically complete the locking, with a high degree of automation. The fourth protrusion 26 latches against the slot 7, and the third side limiting plate 23 abuts against the side plate 6 for double limiting. After the second automatic locking mechanism is locked, it is not easy to open, and the right end of the housing 1 is stably fixed. The inner end of the clamping piece 22 is connected to the third protrusion 27. The right end of the third protrusion 27 is provided with a chamfer so that the clamping piece 22 can drive the third protrusion 27 to climb up the top plate 5 and enter the slot 7 on the top plate 5. When the two clamping pieces 22 are unfolded, the right end of the third side limiting plate 23 can abut against the outer surface of the side plate 6, and the chamfer on the third protrusion 27 abuts against the outer surface of the side plate 6 at the same time to stably maintain the unfolded state of the clamping piece 22. The chamfered angle of the third protrusion 27 reduces the resistance to the unfolding and sliding of the clamp 22, allowing the slot 7 to pass smoothly; the third side limiting plate 23 and the third protrusion 27 support the side plate 6 on both sides, autonomously keeping the clamp 22 in a fully open state, eliminating the need for manual prying and fixing during assembly, simplifying the long-distance installation operation of the linker.

[0042] Furthermore, the warning device integrates an electrically connected temperature measurement module, power supply module, warning light module, and horn. The power supply module includes a solar panel and a storage battery, which provides continuous self-powered power outdoors using solar energy, while the storage battery ensures uninterrupted power supply during cloudy or rainy days and at night. The temperature measurement module is in close contact with the metal contact of the isolating switch 3 to collect the temperature. When the temperature exceeds the threshold, the warning light module flashes LED lights at a high frequency, while the horn continuously emits a high-decibel alarm sound, providing dual warnings of light and sound, allowing for fault identification from a distance.

[0043] Example 1: Description of the device body structure This embodiment provides an over-temperature warning device for a line isolating switch, which includes a housing 1, a first automatic interlocking mechanism, a second automatic interlocking mechanism, a mounting plate 4, and a warning device.

[0044] The housing 1 is integrally molded from transparent insulating PC material, consisting of a top plate 5 and two side plates 6 forming a hollow cavity for housing the isolating switch 3. A long slot 7 is provided on the top plate 5 for the two porcelain insulators 2 to be inserted laterally. Square insertion interfaces 8 are symmetrically provided on the right ends of the two side plates 6. During on-site assembly, the double-pronged end of the link rod can be inserted into the insertion interface 8. Ground operators use the link rod to push the housing 1 to complete the live-line installation; the entire process involves continuously pushing the housing to the left until the two porcelain insulators 2 are locked in place. To ensure stable installation, the insertion interface 8 can be designed with a deeper depth, or multiple insertion interfaces 8 can be used; this application does not impose specific limitations.

[0045] An installation plate 4 is fixed inside the rear side of the casing 1 (near the second automatic locking mechanism), and a warning device is fixed on the installation plate 4. The warning device consists of a temperature measuring module, a power supply module, a warning light module, and a horn connected in series. The power supply module integrates a solar panel and a high-capacity energy storage lithium battery. During the day, the solar panel absorbs light energy and converts it into electrical energy, which is stored in the lithium battery. On cloudy or rainy days and at night, the lithium battery provides continuous power to ensure uninterrupted operation of the entire device. The temperature measuring module has a built-in high-precision thermistor probe. After assembly, the probe fits tightly against the metal moving and stationary contacts of the isolating switch 3. It relies on the good thermal conductivity of the metal to collect the operating temperature of the contacts in real time. The module has a preset safe temperature threshold. The warning light module uses high-brightness red LED beads. When the temperature exceeds the limit, it flashes at a high frequency of 2 times per second, and the visibility distance can reach more than 50 meters. The matching horn is a waterproof high-decibel buzzer. When the temperature exceeds the limit, it emits a continuous and piercing alarm sound, realizing dual warning of light and sound. Even in bright light and noisy environments, maintenance personnel can quickly identify the fault location.

[0046] The first automatic locking mechanism is installed at the left end of the slot 7 on the top plate 5, and the second automatic locking mechanism is installed at the right end of the slot 7. Finally, the first automatic locking mechanism and the second automatic locking mechanism respectively engage and lock the circular periphery between the umbrella skirts of the left porcelain bottle 2 and the circular periphery between the umbrella skirts of the right porcelain bottle 2.

[0047] Example 2: Full Process of On-site Live Installation Pre-deployment locking limit: Manually move the main card clip 9, the secondary card clip 15, and the clamping clip 22 to the fully deployed state (e.g., Figure 1 , Figure 7 , Figure 8 (As shown). At this time, the right end of the first side limiting plate 12 and the first protrusion 20 chamfer simultaneously abut against the outer surface of the side plate 6, restricting the main clamping piece 9 from continuing to flip outward and assemble inward; the right end of the third side limiting plate 23 and the third protrusion 27 chamfer simultaneously abut against the outer surface of the side plate 6, fixing the opening posture of the clamping piece 22, restricting the clamping piece 22 from continuing to flip outward and assemble inward, and keeping all latches at their maximum opening.

[0048] Insert the two prongs connected to the front end of the linker into both connectors 8 simultaneously. The operator stands on the ground, holds the linker, and lifts the housing 1 to the installation height to complete the alignment and positioning. Move the housing 1 to the left, and repeat the process. Figures 7 to 13 The installation is completed by changing the state (for detailed changes in the No. 1 and No. 2 automatic locking mechanisms during installation, please refer to the technical solution / principle section). Specifically, this includes: smoothly pushing the housing 1 to the left; pressing the two primary guide fixing hooks 17 between the umbrella skirts of the right-end porcelain bottle 2; driving the two secondary locking pieces 15 to rotate and retract synchronously towards the two side plates 6; the No. 2 side limiting plate 16 gradually adhering to the No. 1 side limiting plate 12; and the right-end porcelain bottle 2 passing through the No. 1 automatic locking mechanism; the secondary locking pieces 15 stop operating independently. Rotation causes the main locking plate 9 to rotate and close synchronously (i.e., begin assembly); the circular periphery between the umbrella skirts of the left-end porcelain bottle 2 engages with the semi-circular locking slot 19, thus locking the first automatic locking mechanism. If the distance between the left-end porcelain bottle 2 and the right-end porcelain bottle 2 on the isolating gate 3 is just right to match the first and second automatic locking mechanisms (i.e., the size of the isolating gate 3 is suitable), then the two clamping plates 22 in the second automatic locking mechanism will also completely close and wrap around the circular periphery between the umbrella skirts of the right-end porcelain bottle 2, and multiple protrusions will simultaneously hook onto the slot 7 to complete self-locking. If the first automatic locking mechanism is locked but the second automatic locking mechanism has not yet been triggered to lock, the housing 1 can continue to move to the left through the setting of the strip groove 10, providing displacement for the circular periphery between the umbrella skirts of the right-end porcelain bottle 2 to trigger the assembly of the clamping plates 22 in the second automatic locking mechanism. Finally, when both the left and right porcelain bottles 2 are locked in place, the right porcelain bottle 2 cannot be moved because it is locked by the clamping piece 22. Therefore, the main locking piece 9 is also restricted from moving on the top plate through the strip groove 10, and the entire device is locked and fixed.

[0049] Pull the link bar to the right, and the housing 1 is completely covered outside the isolation switch 3, and the warning device enters the all-weather temperature monitoring and early warning working state.

[0050] Example 3: Explanation of the Adaptive Axle Spacing Adaptation Principle The center distance between the two porcelain insulators 2 (i.e., the left and right porcelain insulators 2) on different models of isolating switch 3 varies. This device relies on the strip groove 10 to achieve adaptive adjustment: when the distance between the two porcelain insulators 2 is too large, during the process of pushing the housing 1 to the left, the peripheral circle between the umbrella skirts of the left porcelain insulator 2 pushes the auxiliary locking piece 15 to drive the main locking piece 9 to slide along the strip groove 10 to the right end of the housing 1, providing displacement for the trigger clamp 22 between the umbrella skirts of the right porcelain insulator 2 to close, until the peripheral circle between the umbrella skirts of the right porcelain insulator 2 is locked and fixed by the clamp 22. Therefore, for most of the two porcelain insulators 2, the entire device does not require manual measurement and adjustment of the porcelain insulator wheelbase before installation, and can be adapted to various specifications of double porcelain insulator switches on site (if the distance between the two porcelain insulators 2 exceeds the adjustment range of the strip groove 10, adaptive wheelbase adaptation cannot be achieved).

[0051] Example 4: Complete Workflow for Over-Temperature Early Warning During daytime outdoor operation, the solar panels of the warning device continuously absorb sunlight and convert it into electrical energy, which is stored in the internal lithium battery. The lithium battery continuously powers the temperature measurement module, LED warning lights, and horn. The temperature measurement module probe is in close contact with the metal contacts of the isolating switch, relying on the heat conduction of the metal to collect the contact temperature in real time. The internal control chip compares the real-time temperature with a preset safety threshold. When the contact operating temperature exceeds the preset safety threshold, the temperature measurement module simultaneously outputs a conduction signal to the warning light module and the horn. The red LED beads flash continuously at a high frequency, and the waterproof horn emits a continuous high-decibel alarm sound. During ground inspections and vehicle patrols, maintenance personnel can observe the lights and hear the alarm sound from a distance, quickly locate the overheated switch, and promptly carry out power outage maintenance to eliminate the potential for line overheating and fire or contact erosion.

[0052] Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An over-temperature warning device for a line isolating switch, characterized in that: The device includes a transparent and insulated housing (1). The left and right ends of the opening of the housing (1) are respectively connected to an automatic locking mechanism No. 1 and an automatic locking mechanism No.

2. Moving the housing (1) from right to left enables the automatic locking mechanism No. 1 and the automatic locking mechanism No. 2 to be engaged on two porcelain bottles (2) respectively, and the housing (1) covers the isolation switch (3) connected to the lower end of the two porcelain bottles (2). Near the automatic locking mechanism No. 2, there is a mounting plate (4) connected inside the housing (1). A warning device is connected to the mounting plate (4). The warning device can monitor the temperature on the isolation switch (3) to provide real-time warning feedback. The housing (1) includes a top plate (5) and side plates (6) connected to the front and rear edges of the top plate (5). The top plate (5) and the side plates (6) form a space for covering the isolation switch (3). The opening of the housing (1) is a slot (7) opened on the top plate (5). From right to left, the slot (7) can be used to insert porcelain bottles (2) at the right and left ends in sequence. The first automatic locking mechanism and the second automatic locking mechanism are respectively connected to the top plate (5) outside the slot (7). The right ends of the two side plates (6) are provided with symmetrical plug-in interfaces (8). The plug-in interfaces (8) are connected to the link rod, which facilitates the low-altitude long-distance operation of the housing (1) to achieve live installation. The No. 1 automatic locking mechanism includes a No. 1 clamping ring structure (101) and a No. 2 clamping ring structure (102) with identical structures. The No. 1 clamping ring structure (101) and the No. 2 clamping ring structure (102) are respectively connected to the top plates (5) on the corresponding sides of the slot (7) and work together in linkage. The first retaining ring structure (101) includes a main retaining piece (9) attached to the top plate (5). A strip groove (10) is opened laterally on the main retaining piece (9). A countersunk rivet (11) is inserted through the top of the strip groove (10) on both sides to prevent the main retaining piece (9) from detaching from the top plate (5). The lower end of the countersunk rivet (11) is rotatably connected to the top plate (5) to realize the main retaining piece (9) being movably connected to the top plate (5). A side limiting plate (12) is connected to the outer edge of the main retaining piece (9). Rotating the main retaining piece (9) can make the side limiting plate (12) press against the side plate (6) of the housing (1). A cut (13) is provided at the right corner of the main retaining piece (9) located at the slot (7). The second clamping ring structure (102) also includes a secondary clamping piece (15) located above the main clamping piece (9). The secondary clamping piece (15) is rotatably connected to the right end of the main clamping piece (9) by a second countersunk rivet (14). The gap between the main clamping piece (9) and the secondary clamping piece (15) can accommodate the sliding of the first countersunk rivet (11). The outer end of the secondary clamping piece (15) is connected to a second side limiting plate (16). The right end of the secondary clamping piece (15) is connected to a primary guide fixing hook (17) and a secondary guide fixing hook (18). The primary guide fixing hook (17) is located to the right of the secondary guide fixing hook (18). An obtuse angle opening is formed between the inner side of the primary guide fixing hook (17) and the outer side of the secondary guide fixing hook (18). The shell (1) is moved toward the left end, and the periphery of the umbrella skirt on the right end porcelain bottle (2) abuts against the top of the two primary guide fixing hooks (17), so that the trigger drives the two secondary locking pieces (15) to rotate toward the side plate (6); when the inner sides of the two primary guide fixing hooks (17) are parallel and tangent to the periphery of the umbrella skirt on the right end porcelain bottle (2), the second side limiting plate (16) fits against the first side limiting plate (12) and the first cut (13) and the inner side of the secondary guide fixing hook (18) are joined together to form a semi-circular buckle (19). Continue moving the housing (1) toward the left end. The periphery of the umbrella skirt on the left end porcelain bottle (2) is held in place by the inner side of the secondary guide fixing hook (18) on the secondary locking piece (15). Since the second side limiting plate (16) on the secondary locking piece (15) holds the first side limiting plate (12) on the main locking piece (9), the main locking piece (9) and the secondary locking piece (15) rotate toward the left end porcelain bottle (2) at the same time until the two semi-circular buckles (19) on the first ring structure (101) and the second ring structure (102) are engaged on the periphery of the umbrella skirt on the left end porcelain bottle (2).

2. The over-temperature warning device for a line isolating switch according to claim 1, characterized in that: When the two semi-circular latches (19) on the first clamping ring structure (101) and the second clamping ring structure (102) are engaged with the circumference of the umbrella skirt on the left porcelain bottle (2), the housing (1) continues to move towards the left end. The circumference of the umbrella skirt on the left porcelain bottle (2) will push the auxiliary latching piece (15) to drive the main latching piece (9) to slide along the strip groove (10) towards the right end of the housing (1). After sliding, the main latching piece (9) can be held against the side plate (6) by the first side limiting plate (12) to prevent the main latching piece (9) from rotating around the first countersunk rivet (11), so as to prevent the two semi-circular latches (19) from separating.

3. The over-temperature warning device for a line isolating switch according to claim 1, characterized in that: When the first countersunk rivet (11) is located at the rightmost end of the strip groove (10), the main locking piece (9) can be rotated outward to unfold, and the right end of the first side limiting plate (12) can abut against the outer surface of the side plate (6) to prevent the main locking piece (9) from unfolding too much; when the secondary locking piece (15) unfolds and the top spacing of the first-level guide fixing hook (17) is at its minimum, the second side limiting plate (16) can abut against the outer surface of the side plate (6) to prevent the secondary locking piece (15) from unfolding too much.

4. The over-temperature warning device for a line isolating switch according to claim 3, characterized in that: The inner end of the main card assembly (9) is connected to a protrusion (20). The right end of the protrusion (20) is chamfered so that the main card assembly (9) can drive the protrusion (20) to climb up the top plate (5) and enter the slot (7) on the top plate (5). When the right end of the first side limiting plate (12) can press against the outer surface of the side plate (6), the chamfer on the first protrusion (20) presses against the outer surface of the side plate (6) to stabilize the unfolded state of the main card assembly (9).

5. The over-temperature warning device for a line isolating switch according to claim 4, characterized in that: The left end of the main card assembly (9) is connected to a second protrusion (21). The front end of the second protrusion (21) is chamfered so that the main card assembly (9) can climb onto the top plate (5) to achieve quick assembly of the main card assembly (9). When the two main card assemblies (9) are assembled, the second protrusion (21) on each main card assembly (9) can hook the side of the slot (7) at the end facing away from the side plate (6), and the first side limiting plate (12) on the main card assembly (9) fits against the side plate (6) to prevent the two main card assemblies (9) from separating.

6. The over-temperature warning device for a line isolating switch according to claim 1, characterized in that: The second automatic locking mechanism includes two clamping pieces (22) with identical structures. The outer edge of the clamping piece (22) is connected to the third side limiting plate (23). The two clamping pieces (22) are rotatably connected to the top plates (5) on both sides of the slot (7) by the third countersunk rivets (24). The clamping pieces (22) are respectively provided with semi-circular cuts (25). When the shell (1) moves towards the left end, the porcelain bottle (2) at the right end can press against the edge of the semi-circular cut (25) and trigger the two clamping pieces (22) to rotate and clamp on the circumference between the umbrella skirts of the porcelain bottle (2). The left end of the clip (22) is connected to the fourth protrusion (26). When the two clips (22) are joined together, the fourth protrusion (26) on each clip (22) hooks the side of the slot (7) at the end facing away from the side plate (6), and the third side limiting plate (23) on the clip (22) fits against the side plate (6) to prevent the two clips (22) from separating. The fourth protrusion (26) is provided with a chamfer at the end facing the side plate (6) so that the clip (22) can climb up the top plate (5) to achieve quick joining of the clips (22).

7. The over-temperature warning device for a line isolating switch according to claim 6, characterized in that: The inner end of the clip (22) is connected to a third protrusion (27). The right end of the third protrusion (27) is provided with a chamfer so that the clip (22) can drive the third protrusion (27) to climb up the top plate (5) and enter the slot (7) on the top plate (5). When the two clips (22) are unfolded, the right end of the third side limiting plate (23) can press against the outer surface of the side plate (6), and the chamfer on the third protrusion (27) presses against the outer surface of the side plate (6) to stabilize the unfolded state of the clips (22).

8. The over-temperature warning device for a line isolating switch according to claim 1, characterized in that: The warning device includes an electrically connected temperature measuring module, a power supply module, and a warning light module. The power supply module includes a solar panel and a battery capable of storing electrical energy. The temperature measuring module can contact the isolation switch (3) to measure the temperature in real time.

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