A device and method for replacing a main switch of a measuring switch without power interruption

Abstract

The application relates to the field of power line construction and power distribution equipment, and particularly discloses a device and method for replacing a main switch of a non-power-off connecting measuring switch, which comprises a wire clamp hook, a vice hook plate assembly and a device main body, the device main body is internally provided with a worm gear jacking mechanism, a conductive brass, a cutter, a cable quick connecting device and a temperature monitoring alarm device, and the conductive brass and the cable conductor form surface contact through a jacking-peeling-pressing mode. The method adopts the bypass live working principle and sequentially completes bypass system building, operation state checking, original main switch removal and replacement and line recovery. The application can complete wire connection without power-off and damage to the main cable conductor, improves the connecting conductive reliability, supports temperature monitoring to guarantee operation safety, realizes main switch replacement without user perception, and effectively improves power supply continuity and operation and maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of power line construction and power distribution equipment technology, specifically to a device and method for replacing the main switch of a continuous power supply measurement switch. Background Technology

[0002] In power distribution networks, it is often necessary to connect branch lines or bypass existing lines from an insulated main line. The traditional connection method involves stripping the insulation layers of the main line and branch lines, using mechanical bolt clamps (such as parallel groove clamps) or crimp terminals to connect the conductors, and finally performing complex insulation restoration and sealing treatment. This method is cumbersome and cannot be safely operated under energized conditions.

[0003] To overcome the aforementioned problems, insulation piercing clamp devices have emerged and are widely used. Existing devices typically include: an insulating shell, internal current-carrying piercing teeth (or blades), bolts for fastening, and a sealing assembly. Their working principle is as follows: by tightening the bolts, the piercing teeth are driven to simultaneously pierce the insulation layers of both the main line and branch lines, making direct contact with the internal metal conductors, thereby achieving electrical connection; simultaneously, the shell and sealing assembly create a sealed environment around the piercing point, providing insulation, waterproofing, and moisture protection.

[0004] The core advantage of this type of device lies in its convenient construction, which eliminates the need for manual stripping of the wire insulation, simplifying the installation process; it also supports live-line work, allowing installation without power interruption, which greatly improves power supply reliability and operation and maintenance efficiency.

[0005] Despite the device's significant ease of use, in-depth analysis and long-term operational experience reveal the following fundamental shortcomings that urgently need to be addressed: Structural performance issues: Existing devices often use triangular, arc-shaped, or staggered tooth designs to enhance piercing force. Electrical connections rely entirely on point contact or limited line contact between the piercing teeth and the conductor. The contact area is much smaller than the surface contact after traditional stripping. During piercing, the piercing tooth material must have good conductivity while also having high requirements for tooth tip hardness. For cables with thick wire diameters and thick insulation layers, the piercing effect is poor or the device cannot be used.

[0006] Condition invisibility and post-inspection capability: Because the connection points and all critical components (puncture teeth, contact surfaces, conductors) are sealed inside an insulating shell, a "black box" is formed. The structure of the "black box" makes the condition invisible, and maintenance personnel cannot visually determine whether the internal contacts are good, whether there is corrosion or overheating through routine inspections. Fault detection heavily relies on periodic infrared thermal imaging detection, and preventive maintenance is costly and may miss some faults.

[0007] Contact resistance and heating issues: The contact quality at the puncture point is highly dependent on the tightening torque during installation and the size of the connection surface between the puncture teeth and the conductor. Because it's a "black box" structure, the condition is not visible; therefore, insufficient torque and a small connection surface will lead to excessive contact resistance, becoming a faulty heating point, and in severe cases, potentially causing burnout. Excessive torque may damage the conductor or the puncture teeth. Compared to traditional crimping or bolted connections after stripping the insulation layer, the contact resistance is relatively high, the current carrying capacity is usually low, and the contact points are concentrated at the tips of a few puncture teeth, belonging to point contact or extremely small area line contact, resulting in uneven current density distribution. Essentially, it is not as ideal as large-area surface contact after insulation stripping (such as crimping).

[0008] Permanent damage to cable conductor integrity and stress concentration: When the piercing teeth penetrate the insulation layer, they may cause scratches or mechanical damage to the internal conductor (especially aluminum conductors or soft copper stranded wires), reducing the conductor's mechanical strength and creating stress concentration points. Regardless of the optimized tooth shape, the piercing process will inevitably cause indentations or even micro-damage to the conductor surface, destroying the conductor's original integrity. Under long-term vibration and thermal cycling, these points may become the starting points for fatigue fracture or creep, especially for soft aluminum or aluminum stranded wires.

[0009] Therefore, there is an urgent need for a new type of wire connection device to solve the existing predicament. This device must be able to fundamentally improve contact performance, enhance reliability, and improve condition detectability while retaining the advantages of convenient installation and live operation, so as to meet the stringent requirements of modern smart distribution networks for high safety and high reliability, and meet the wire connection requirements for replacing the main switch of the new measurement switch without power interruption. Summary of the Invention

[0010] To address the aforementioned problems in the prior art, this invention provides a device and method for replacing the main switch of a continuous connection measurement switch without power interruption. This solves the problems of high contact resistance at the clamp points of existing insulation piercing wires, easy damage to cable conductors, and inability to see the operating status of the joints, as well as the need for power outage operations for traditional wire stripping and splicing. This invention allows for wire splicing to be completed without power interruption or damage to the main cable conductor.

[0011] To achieve the above objectives, the present invention proposes a device for replacing the main switch of a continuous measurement switch without power interruption, comprising a wire clamp hook, a secondary hook plate assembly, and a device body; The auxiliary hook plate assembly includes a hook plate hinge and a hook plate, which are rotatably connected by a pin. The main body of the device includes a first outer fastener, a second outer fastener, a base plate, an insulating seat, an isolation cover, an isolation cover pressure plate, a worm gear lifting mechanism, conductive brass, a conductive brass seat, a cutter, a cutter insulating plate, a cable quick-connect device, and a temperature monitoring and alarm device; the wire clamp hooks are detachably connected to the main body of the device and the auxiliary hook plate assembly respectively. The conductive brass is installed inside the conductive brass base. The cable quick-connect device and the temperature monitoring alarm device are respectively connected to the end of the conductive brass. The cutter is fixedly connected to the cutter insulation plate and is wrapped around the outside of the conductive brass. The worm gear lifting mechanism is located below the conductive brass base and is used to drive the conductive brass base and the conductive brass to move vertically up and down.

[0012] Preferably, the first outer fastener and the second outer fastener are wrapped around the outside of the worm gear lifting mechanism, the conductive brass, the conductive brass seat, the cutter and the cutter insulating plate. The bottom of both the first outer fastener and the second outer fastener are fixedly connected to the base plate, and the front and rear sides of the first outer fastener and the second outer fastener are fixedly connected to the insulating seat. The isolation cover is fixedly installed on the upper part of the insulating seat by the isolation cover pressure plate.

[0013] Preferably, the worm gear lifting mechanism includes a lifting bolt, a worm gear, a worm, a worm rotation handle, a worm gear seat, and a support base; the worm gear and worm mesh with each other and are installed inside the worm gear seat, one end of the worm extends out of the worm gear seat and is fixedly connected to the worm rotation handle; the lifting bolt is in drive engagement with the worm gear; the base plate is fixed to the first and second outer fasteners and is located at the bottom of the worm gear seat; the upper end of the support base is fixedly connected to conductive brass, and the lower end is fixedly connected to the lifting bolt.

[0014] Preferably, the cutters are located on both sides of the top of the conductive brass. When the conductive brass moves upward, it pushes the cutters on both sides to open outward, which is used to peel off the insulation layer on the outside of the cable.

[0015] Preferably, both the first and second outer fasteners are provided with neodymium iron boron permanent magnets on their sides, and the wire clamp hook, the auxiliary hook plate assembly and the main body of the device are connected by magnetic adsorption.

[0016] Preferably, the temperature monitoring and alarm device includes a parallel button battery power supply module, an NTC resistance temperature conversion circuit, a microcontroller, an audible alarm circuit, and a high-brightness LED warning light; the signal output terminal of the NTC resistance temperature conversion circuit is connected to the microcontroller, and the microcontroller is electrically connected to the audible alarm circuit and the high-brightness LED warning light respectively.

[0017] A method for replacing the main switch of a continuous power supply measurement switch is also proposed, which is implemented using a device for replacing the main switch of a continuous power supply measurement switch, including the following steps: S1. Bypass system setup: Connect the device to the cable. The operator wears full protective gear and connects the device to the power supply side and load side of the main cable circuit breaker. The measuring switch with insulated lead wire is connected through the cable quick connector of the device to form a temporary parallel circuit. When connecting, first complete the load side connection, then complete the power supply side connection. After installation, close the measuring switch knife to confirm the bypass is connected. S2. Bypass Status Verification: The temperature monitoring and alarm device of the device monitors the operating status of the bypass system in real time. If an alarm signal is detected, the measuring switch is disconnected and the line connection status is checked. If there is no alarm signal, it is confirmed that the bypass system is conducting normally. S3. Main switch removal and replacement: Open the original main switch, remove the wires on both sides of the main switch and install an insulating shield. After removing the original main switch, install a new measuring switch. The main switch can be opened by remote control or manual operation. Before removing the main switch, the wires on both sides should be insulated and shielded. S4. Line restoration: Remove the insulating shield, connect the main conductors on the power supply side and the load side to the corresponding terminals of the new measuring switch, and close the new measuring switch; then disconnect the measuring switch in the bypass system, remove the bypass cable and connecting device, and restore the line to its original state.

[0018] Preferably, in step S1, the connection between the device and the cable is specifically as follows: hook the cable to be connected with the wire clamp hook, then connect the main body of the device to the wire clamp hook, and finally connect the auxiliary hook plate assembly to the wire clamp hook and the main body of the device respectively; tighten the set screw of the base plate to push the worm gear lifting mechanism and the upper structure to move upward as a whole, so that the cutter cuts into the cable insulation layer; rotate the worm gear rotating handle, and push the conductive brass upward through the worm gear lifting mechanism, and the conductive brass drives the cutter to peel off the cable insulation layer to both sides, so that the conductive brass and the cable conductor are in close contact.

[0019] Preferably, in step S2, the temperature monitoring and alarm device collects the conductor temperature signal through an NTC resistor, and transmits it to the microcontroller after voltage conversion and filtering. When the temperature is abnormal, the microcontroller controls the sound alarm circuit and the high-brightness LED warning light to output an alarm signal.

[0020] Preferably, in step S4, after the novel measuring switch is closed, the load current is transmitted simultaneously through the main contact of the novel measuring switch and the bypass cable; after the measuring switch in the bypass system is opened, all load current is transferred to the circuit of the novel measuring switch.

[0021] Therefore, this invention proposes a device and method for replacing the main switch of a continuous measurement switch without power interruption, the advantages of which are as follows: (1) The present invention adopts a lifting-stripping-pressing connection method, which enables the conductive brass to form a large-area surface contact with the cable conductor, greatly reducing the contact resistance and operating temperature rise, and fundamentally improving the reliability of electrical connection; at the same time, it avoids mechanical damage to the conductor caused by the piercing structure, and ensures the mechanical strength and service life of the cable body.

[0022] (2) This invention relies on the worm gear lifting mechanism to achieve wire stripping-free installation, and can complete the wire splicing and bypass circuit construction without power interruption, ensuring power supply continuity, simplifying construction procedures, and effectively improving the convenience and efficiency of live-line work.

[0023] (3) The present invention integrates a cable quick-connect device and a temperature monitoring and alarm device, which can quickly connect to the measuring switch to build a bypass circuit, and at the same time monitor the temperature of the connection part in real time. When abnormal, it triggers an audible and visual alarm, which improves the operational safety and facilitates maintenance personnel to promptly investigate potential hazards.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the appearance of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a flowchart illustrating the overall installation process of the device of the present invention; Figure 4 This is a schematic diagram of the worm gear transmission lifting mechanism system of the present invention; Figure 5 This is a schematic diagram of the quick-connect device and temperature monitoring alarm device of the present invention; Figure 6 This is a schematic diagram of the circuit framework of the temperature monitoring and alarm device of the present invention.

[0026] Figure Labels 1. Insulating rubber; 2. Hook plate hinge; 3. Cutter; 4. Cutter insulating plate; 5. Wire clamp hook; 6. Hook plate; 7. First outer fastener; 8. Second outer fastener; 9. Isolation cover; 10. Isolation cover pressure plate; 11. Insulating base; 12. Conductive brass; 13. Conductive brass base; 14. Base plate; 15. Lifting bolt; 16. Worm gear; 17. Worm; 18. Worm gear rotating handle; 19. Worm gear and worm gear seat; 20. Support base; 21. Cable quick-connect device; 22. Temperature monitoring and alarm device. Detailed Implementation

[0027] To make the technical solutions, advantages, and objectives of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. The described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the protection scope of this application.

[0028] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0029] like Figures 1-2 As shown, the present invention provides a device for replacing the main switch of a continuous measurement switch without power interruption. The device consists of three parts: a wire clamp hook 5, a secondary hook plate assembly, and the main body of the device.

[0030] The cable clamp hook 5 is used to hook the cable to be spliced, and its inner side is provided with insulating rubber 1, which serves to provide insulation and prevent slippage. The auxiliary hook plate assembly includes hook plate hinge 2 and hook plate 6, which are rotatably connected by a pin, and are used to cooperate with the cable clamp hook 5 to complete the overall locking and fixation of the device body.

[0031] The main body of the device includes a first external fastener 7, a second external fastener 8, a base plate 14, an insulating seat 11, an isolation cover 9, an isolation cover pressure plate 10, a cutter 3, a cutter insulating plate 4, a conductive brass 12, a conductive brass seat 13, a worm gear lifting mechanism, a cable quick-connect device 21, and a temperature monitoring and alarm device 22.

[0032] The conductive brass 12 is installed inside the conductive brass base 13. The cable quick-connect device 21 and the temperature monitoring and alarm device 22 are respectively connected to the end of the conductive brass 12, and are used to realize the quick connection of the bypass cable and the temperature monitoring and alarm of the connection point. The cutter 3 is fixedly connected to the cutter insulation plate 4 and is wrapped around the outer side of the upper part of the conductive brass 12.

[0033] The cutter 3 is made of high-strength, low-conductivity stainless steel and is designed with a cutting edge to cut the outer insulation layer of the cable.

[0034] The first outer fastener 7 and the second outer fastener 8 are wrapped around the worm gear lifting mechanism, the conductive brass 12, the conductive brass seat 13, the cutter 3 and the cutter insulation plate 4. The bottom of both are fixedly connected to the base plate 14, and the front and rear sides of the first outer fastener 7 and the second outer fastener 8 are fixedly connected to the insulation seat 11.

[0035] Both the first outer fastener 7 and the second outer fastener 8 are equipped with N52 neodymium iron boron high-strength permanent magnets on their sides. The wire clamp hook 5, the auxiliary hook plate assembly, and the main body of the device can be tightly connected by magnetic attraction. The isolation cover 9 is fixedly installed on the upper part of the insulating base 11 by the isolation cover pressure plate 10, forming insulation protection and physical isolation between the joint parts.

[0036] like Figure 4 As shown, the worm gear lifting mechanism is located below the conductive brass base 13. It is used to drive the conductive brass base 13 and the upper parts to move upward, and to make the conductive brass 12 move vertically up and down to peel open and close the insulation layer of the wire. It includes a lifting bolt 15, a worm gear 16, a worm 17, a worm rotation handle 18, a worm gear base 19, and a support base 20.

[0037] The worm gear seat 19 and the conductive brass seat 13 are fixedly connected by bolts. The worm gear 16 is mounted with bearings on its upper and lower shafts and is vertically fixed inside the worm gear seat 19. The specific installation method is as follows: the worm gear 16 with bearings is installed vertically from top to bottom. The bearings are placed directly in the bearing groove at the bottom of the inner side of the worm gear seat 19. The worm gear seat 19 is constrained by a specific structure. The bearings and worm gear 16 are fixed by a snap ring. The snap ring is installed on the snap ring groove on the upper inner side of the worm gear seat 19 to ensure that its upper and lower positions do not move, and to ensure meshing transmission so that the worm gear 16 rotates in the original position.

[0038] The worm gear 16 has a central threaded hole, and the lifting bolt 15 passes through this central threaded hole, with the two engaging via a threaded connection. The upper end of the lifting bolt 15 is fixedly connected to the support base 20, which in turn is fixedly connected to the conductive brass 12, thus restricting the rotation of the lifting bolt 15. Therefore, when the worm 17 drives the worm gear 16 to rotate, the worm gear 16 rotates in its original position, and the lifting bolt 15, driven by the thread, moves vertically up and down along the central threaded hole of the worm gear 16, thereby driving the conductive brass 12 to move up and down via the support base 20.

[0039] The worm 17 and worm wheel 16 are perpendicularly meshed and installed inside the worm wheel and worm seat 19. The specific installation method is as follows: one end of the worm 17 shaft is equipped with a bearing, which is constrained by the bearing hole on the side of the worm wheel and worm seat 19 and fixed by a snap ring. The other end is fixedly connected to the worm rotating handle 18. The worm rotating handle 18 is equipped with a bearing, which is constrained by a snap ring. It is installed from left to right on the bearing hole on the other side of the worm wheel and worm seat 19 and constrained by a snap ring.

[0040] The base plate 14 is fixed to the first outer fastener 7 and the second outer fastener 8, and is located at the bottom of the worm gear seat 19. The upper end of the support seat 20 is fixedly connected to the conductive brass 12, and the lower end is fixedly connected to the lifting bolt 15 to prevent rotation and ensure that the upper and lower parts are connected.

[0041] During operation, the set screws on the rotating base plate 14 push the entire worm gear lifting mechanism and upper parts upward, causing the cutter 3 to cut into the conductor insulation layer. Then, the worm rotation handle 18 is rotated by the power tool, driving the worm 17 to rotate. Through gear meshing, the worm gear 16 rotates. The worm gear 16, as an axially fixed internal threaded part, drives the lifting bolt 15 to perform a vertical lifting movement, thereby pushing the conductive brass 12 upward, pushing the cutter 3 to peel off the insulation layer and perform crimping. During disassembly, the operation is reversed. The worm rotation handle 18 is rotated in the opposite direction, and through gear meshing and thread drive, the conductive brass 12 descends. The descent of the conductive brass 12 drives the worm gear lifting mechanism and upper parts downward, separating it from the conductor. The set screws on the rotating base plate 14 rotate in the opposite direction, and the cutter 3 is closed by reverse pressure.

[0042] like Figures 5-6 As shown, the temperature monitoring and alarm device 22 is powered by two CR2032 button batteries connected in parallel. It is equipped with an NTC resistor temperature conversion circuit, a low-power microcontroller, an active buzzer, and a high-brightness LED warning light.

[0043] After the NTC resistance temperature conversion circuit completes voltage conversion and filtering, it is connected to the microcontroller. The microcontroller realizes temperature detection and abnormal signal output, and then controls the sound alarm circuit and high-brightness LED warning light to work, triggering sound and light alarm when the temperature is abnormal.

[0044] The assembly and electrical connection process of this device is as follows: Before use, assemble all components: assemble the lifting bolt 15, worm gear 16, worm 17, worm rotating handle 18, worm gear seat 19, and support seat 20 into a worm gear transmission lifting mechanism system.

[0045] After the conductive brass 12 and conductive brass base 13 are installed in conjunction with the worm gear transmission lifting mechanism system, they are connected to the cable quick-connect device 21 and the temperature monitoring alarm device 22. The cutter 3 and cutter insulation plate 4 are fixedly connected and wrapped around the outside of the conductive brass 12. The above-mentioned components are completely wrapped with the first outer fastener 7 and the second outer fastener 8. After completion, the bottom of the first outer fastener 7 and the second outer fastener 8 are fixedly connected to the base plate 14, and the front and rear sides of the first outer fastener 7 and the second outer fastener 8 are fixedly connected to the insulation base 11.

[0046] Finally, the isolation cover 9 is fixedly installed on the insulating base 11 by the isolation cover pressure plate 10, completing the assembly of the main body of the device; at the same time, the hook plate hinge 2 and the hook plate 6 are connected by the pin shaft, completing the assembly of the auxiliary hook plate assembly.

[0047] During electrical connection, first hook the cable clamp 5 onto the cable to be connected, then connect the main body of the device to the cable clamp 5, and finally connect the auxiliary hook plate assembly to the cable clamp 5 and the main body of the device respectively, relying on the strong magnetic attraction of the side of the outer fastener to make the three tightly connected.

[0048] After the connection is completed, tighten the set screw of the base plate 14 to push the worm gear lifting mechanism and the upper structure to move upward as a whole, so that the cutter 3 cuts into the cable insulation layer.

[0049] Subsequently, rotating the worm gear and rotating the handle 18, the worm gear transmission lifting mechanism pushes the conductive brass 12 upward. As the conductive brass 12 moves upward, it pushes the cutter 3 to move to both sides, peeling off the cable insulation layer. At the same time, the conductive brass 12 simultaneously makes tight contact with the cable conductor through the clamping force, thus completing the electrical connection between the device and the cable conductor. After the connection is completed, the measuring switch device is quickly connected to the quick connection device of the present invention. At the same time, the temperature monitoring and alarm device of the present invention performs real-time monitoring to ensure the safe and reliable operation of the entire system.

[0050] like Figure 3 As shown, the method for replacing the main switch using the above-mentioned device to achieve uninterrupted power supply measurement switch is implemented in the following steps: S1. Pre-operation preparation and bypass system setup: The operators, wearing full sets of insulated protective gear, connected the aforementioned splicing devices to the upper power supply side and the lower load side of the main line cable circuit breaker, respectively. They then connected the measuring switch with insulated lead wires through the cable quick-connect device 21 of the splicing device to create a temporary parallel path.

[0051] During connection, first quickly connect the load side, then connect the power supply side. After installation is completed and confirmed to be correct, close the measuring switch knife to confirm that the bypass is conducting. At this time, the current supplies power to the downstream load through the temporarily built bypass system.

[0052] S2. Bypass system conduction status verification: The temperature monitoring and alarm device 22 built into the connection device monitors the status of the entire bypass system in real time and provides early warning of operation by monitoring the temperature changes of the connection parts.

[0053] When an alarm sounds and an indicator light illuminates, immediately disconnect the measuring switch and recheck the entire circuit to ensure all connections are in place. If there is no alarm signal, it indicates that the bypass system is functioning normally, and the next step can be carried out.

[0054] S3. Main switch removal and replacement: After confirming that the bypass system is functioning normally, the original main switch is tripped remotely or manually. Since the bypass system has been established, the tripping operation will not affect the user's normal power supply. The wires on both sides of the main switch are removed and insulated shields are installed for isolation and protection. Then, the original main switch is removed and a new measuring switch is installed.

[0055] S4. Connection of the new measuring switch and removal of the bypass system: Remove the insulating shield and connect the main conductors on the power supply side and the load side to the corresponding terminals of the new measuring switch. After the connection is completed, close the new switch to put it in the closed state. At this time, the load current is transmitted through both the main contacts of the new switch and the bypass cable.

[0056] When dismantling the bypass system, first open the measuring switch in the bypass circuit. At this time, all load current is transferred to the main switch circuit. Then remove the bypass cable and splicing device, restore the original state of the line, and the entire process of replacing the main switch without power interruption is completed.

[0057] Therefore, this invention provides a device and method for replacing the main switch while maintaining power continuity, solving the technical problems of high contact resistance at the clamp points of existing insulation piercing wires, easy damage to cable conductors, and inability to visualize the joint's operating status, as well as the need for power outage operations for traditional wire stripping and splicing. This invention utilizes a lifting-stripping-crimping structure to achieve large-area contact of the conductor, reducing the risk of joint temperature rise; it employs a worm gear mechanism to achieve live-line, manual wire stripping installation, ensuring uninterrupted power supply; and it integrates temperature monitoring and alarm functions to monitor the operating status of the splicing point in real time, enabling bypass live-line replacement of the main switch, reducing power outage costs, lowering maintenance and repair pressure, and improving the reliability and efficiency of live-line splicing operations on the main distribution network.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A device for replacing the main switch of a continuous measurement switch without power interruption, characterized in that, Includes wire clamp hook, auxiliary hook plate assembly and main body of device; The auxiliary hook plate assembly includes a hook plate hinge and a hook plate, which are rotatably connected by a pin. The main body of the device includes a first outer fastener, a second outer fastener, a base plate, an insulating seat, an isolation cover, an isolation cover pressure plate, a worm gear lifting mechanism, conductive brass, a conductive brass seat, a cutter, a cutter insulating plate, a cable quick-connect device, and a temperature monitoring and alarm device; the wire clamp hooks are detachably connected to the main body of the device and the auxiliary hook plate assembly respectively. The conductive brass is installed inside the conductive brass base. The cable quick-connect device and the temperature monitoring alarm device are respectively connected to the end of the conductive brass. The cutter is fixedly connected to the cutter insulation plate and is wrapped around the outer side of the upper part of the conductive brass. The worm gear lifting mechanism is located below the conductive brass base and is used to drive the conductive brass base and the conductive brass to move vertically up and down.

2. The device for replacing the main switch of a continuous measurement switch without power interruption according to claim 1, characterized in that, The first and second outer fasteners are wrapped around the worm gear lifting mechanism, conductive brass, conductive brass base, cutter and cutter insulation plate. The bottom of both the first and second outer fasteners are fixedly connected to the base plate, and the front and rear sides of the first and second outer fasteners are fixedly connected to the insulation base. The isolation cover is fixedly installed on the upper part of the insulation base by the isolation cover pressure plate.

3. The device for replacing the main switch of a continuous measurement switch without power interruption according to claim 2, characterized in that, The worm gear lifting mechanism includes a lifting bolt, a worm gear, a worm, a worm rotation handle, a worm gear seat, and a support base. The worm gear and worm mesh with each other and are installed inside the worm gear seat. One end of the worm extends out of the worm gear seat and is fixedly connected to the worm rotation handle. The lifting bolt is driven by the worm gear. The base plate is fixed to the first and second external fasteners and is located at the bottom of the worm gear seat. The upper end of the support base is fixedly connected to conductive brass, and the lower end is fixedly connected to the lifting bolt.

4. The device for replacing the main switch of a continuous measurement switch without power interruption according to claim 1, characterized in that, The cutters are located on both sides of the top of the conductive brass. When the conductive brass moves upward, it pushes the cutters on both sides to open outward, which is used to peel off the insulation layer on the outside of the cable.

5. The device for replacing the main switch of a continuous measurement switch without power interruption according to claim 1, characterized in that, Both the first and second outer fasteners are provided with neodymium iron boron permanent magnets on their sides, and the wire clamp hook, the auxiliary hook plate assembly and the main body of the device are connected by magnetic adsorption.

6. The device for replacing the main switch of a continuous measurement switch without power interruption according to claim 1, characterized in that, The temperature monitoring and alarm device includes a parallel button battery power supply module, an NTC resistance temperature conversion circuit, a microcontroller, an audible alarm circuit, and a high-brightness LED warning light; the signal output terminal of the NTC resistance temperature conversion circuit is connected to the microcontroller, and the microcontroller is electrically connected to the audible alarm circuit and the high-brightness LED warning light respectively.

7. A method for replacing the main switch of a non-power-connection measurement switch, implemented using the apparatus for replacing the main switch of a non-power-connection measurement switch as described in any one of claims 1-6, characterized in that... Includes the following steps: S1. Bypass system setup: Connect the device to the cable. The operator wears full set of insulating protective equipment and connects the device to the power supply side and load side of the main cable circuit breaker respectively. The measuring switch with insulated lead wire is connected through the cable quick-connect device of the device to form a temporary parallel circuit. When connecting, first complete the load side connection, then complete the power supply side connection. After installation, close the measuring switch knife and confirm that the bypass is connected. S2. Bypass Status Verification: The temperature monitoring and alarm device of the device monitors the operating status of the bypass system in real time. If an alarm signal is detected, the measuring switch is disconnected and the line connection status is checked. If there is no alarm signal, it is confirmed that the bypass system is conducting normally. S3. Main switch removal and replacement: Open the original main switch, remove the wires on both sides of the main switch and install an insulating shield. After removing the original main switch, install a new measuring switch. The main switch can be opened by remote control or manual operation. Before removing the main switch, the wires on both sides should be insulated and shielded. S4. Line restoration: Remove the insulating shield and connect the main conductors on the power supply side and the load side to the corresponding terminals of the new measuring switch, and close the new measuring switch. Then disconnect the measuring switch in the bypass system, remove the bypass cable and connecting device, and restore the original state of the line.

8. The method for replacing the main switch of a continuous measurement switch without power interruption according to claim 7, characterized in that, In step S1, the connection between the device and the cable is specifically as follows: hook the cable to be connected with the wire clamp hook, then connect the main body of the device to the wire clamp hook, and finally connect the auxiliary hook plate assembly to the wire clamp hook and the main body of the device respectively; tighten the set screw of the base plate to push the worm gear lifting mechanism and the upper structure to move upward as a whole, so that the cutter cuts into the cable insulation layer; rotate the worm gear rotating handle, and push the conductive brass upward through the worm gear lifting mechanism. The conductive brass drives the cutter to peel off the cable insulation layer to both sides, so that the conductive brass and the cable conductor are in close contact.

9. A method for replacing the main switch of a continuous measurement switch without power interruption according to claim 7, characterized in that, In S2, the temperature monitoring and alarm device collects the conductor temperature signal through an NTC resistor, and transmits it to the microcontroller after voltage conversion and filtering. When the temperature is abnormal, the microcontroller controls the sound alarm circuit and the high-brightness LED warning light to output an alarm signal.

10. A method for replacing the main switch of a continuous measurement switch without power interruption according to claim 7, characterized in that, In S4, after the new type of measuring switch is closed, the load current is transmitted simultaneously through the main contact of the new type of measuring switch and the bypass cable; after the measuring switch in the bypass system is opened, all load current is transferred to the circuit of the new type of measuring switch.

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