Live line workable composite post insulator and method of use

Abstract

The application discloses a composite insulator for live working and a use method, and belongs to the field of power facilities. The application solves the problem of inconvenience in replacing the insulator in the prior art. The technical solution for solving the problem comprises an insulator body and a wiring part. The wiring part comprises a first clamping body and a second clamping body which are hingedly connected to each other through a hinge shaft and a driving rod. The first clamping body and the second clamping body have a closed position and an open position. The driving rod is rotationally connected with the first clamping body. The second clamping body is provided with a threaded hole. The driving rod comprises a light shaft section in the middle and a first threaded section and a second threaded section at both ends of the light shaft section. When the first clamping body and the second clamping body are in the closed position, the first threaded section is threadedly matched with the threaded hole. When the first clamping body and the second clamping body are in the open position, the second threaded section is threadedly matched with the threaded hole. When the first clamping body and the second clamping body move between the closed position and the open position, the light shaft section can slidably pass through the threaded hole. The application makes the replacement of the insulator more convenient.

Description

A composite post insulator suitable for live-line work and its application method Technical Field

[0001] This invention relates to the field of power facilities, and in particular to a composite post insulator that allows for live-line work and its method of use. Background Technology

[0002] In existing technologies, insulators and conductors are usually connected by binding wires. During the operation of overhead power distribution lines, the environment is complex and is affected by meteorological conditions such as wind, ice, and temperature, as well as voltage and current. The binding wires are prone to corrosion, aging, or loosening, causing the conductors to fall onto the crossarm or hang in mid-air, posing serious electrical safety hazards and operational risks. Of course, there are also utility model patents such as CN218631508U that disclose composite post insulators that can be used for live-line work. The insulator uses a pressure cap assembly and a hardware body to form a clamping structure to clamp the conductor. The screw adjusts the movement of the pressure cap assembly relative to the hardware body to achieve the clamping and loosening of the conductor. The screw adopts a continuous thread design, and the opening and closing gap between the pressure cap assembly and the hardware body is relatively large. In order to achieve complete clamping or loosening, the screw needs to be rotated continuously for multiple turns through the insulated operating rod to complete the opening and closing action. Moreover, under live-line working conditions, the operator cannot directly contact the equipment and must operate it remotely through the insulated operating rod. The insulator is suspended on the conductor and is easily affected by wind or operational disturbances, which can cause the screw and tool to be unstable. Continuous rotation for multiple turns can easily cause slippage and disengagement, making the operation difficult and time-consuming. Summary of the Invention

[0003] The purpose of this invention is to provide a composite post insulator that can be operated under live conditions, which solves the problem of inconvenient insulator replacement in the prior art and makes insulator replacement more convenient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a composite post insulator capable of live-line operation, comprising an insulator body and a connector for clamping live conductors. The connector includes a first clamp and a second clamp hinged together by a hinge shaft, and a drive rod for driving the relative movement of the first clamp and the second clamp. The first clamp and the second clamp have a closed position and an open position. The drive rod is rotatably connected to the first clamp. The second clamp is provided with a threaded hole. The drive rod includes a central optical axis section and a first threaded section and a second threaded section located at both ends of the optical axis section. When the first clamp and the second clamp are in the closed position, the first threaded section is threadedly engaged with the threaded hole. When the first clamp and the second clamp are in the open position, the second threaded section is threadedly engaged with the threaded hole. When the first clamp and the second clamp move between the closed position and the open position, the optical axis section can slide through the threaded hole.

[0005] After adopting the above technical solution, the present invention has the following advantages: When the first clamp and the second clamp switch between the closed and open positions, the optical axis segment can slide through the threaded hole without screwing it in. Only a few rotations are needed to complete the opening and closing action, which greatly reduces the number of operation rotations, shortens the operation stroke, and greatly improves the efficiency of high-altitude live-line work. The closed position is locked by the threaded engagement of the first threaded segment and the threaded hole, and the open position is fixed by the threaded connection of the second threaded segment. Both working states form clear mechanical limits through the threaded structure, so that the wiring component can be reliably locked in both operation and maintenance states, effectively reducing unexpected actions caused by wind vibration or external force interference. At the same time, the operator can judge whether the clamping or releasing is in place by the change in feel or sudden change in resistance during the rotation process, achieving precise positioning and further ensuring the reliability of the connection and the safety of operation.

[0006] Furthermore, the connector also includes an anti-loosening structure for keeping the first clamp and the second clamp in a closed or open position.

[0007] By adopting the aforementioned technical solution, the anti-loosening structure can effectively prevent the first clamp and the second clamp from loosening or accidentally opening and closing under long-term operation or external disturbance, significantly improving the operational reliability and safety of the equipment.

[0008] Furthermore, the anti-loosening structure includes a spring disposed on the drive rod and located between the first clamp and the second clamp. When the first clamp and the second clamp are in the closed position, the spring is in a natural state. When the first clamp and the second clamp move from the closed position to the open position, the spring is in an elastic deformation state.

[0009] By adopting the aforementioned technical solution, when the connector is in the closed position, i.e., in normal operation, the spring is in a natural state and does not bear stress, thus avoiding material fatigue, stress relaxation, or elastic decay caused by long-term stress, effectively extending the service life of the spring. Secondly, when the first and second clamps move from the closed position to the open position, the spring undergoes elastic deformation to form a continuous reverse resistance, effectively preventing the first and second clamps from opening on their own without external force, thereby preventing accidental opening and closing due to vibration, wind sway, or accidental contact as much as possible, and improving the locking stability and safety of the connector in operation.

[0010] Furthermore, the anti-loosening structure includes a torsion spring disposed on the hinge shaft, with its two ends abutting against the first clamp and the second clamp respectively. When the first clamp and the second clamp are in the closed position, the torsion spring is in the natural state. When the first clamp and the second clamp move from the closed position to the open position, the torsion spring is in the elastic deformation state.

[0011] By adopting the aforementioned technical solution, when the connector is in the closed position, i.e., in normal operation, the torsion spring is in its natural state and does not bear stress, thus avoiding material fatigue, stress relaxation, or elastic decay caused by long-term stress, effectively extending the service life of the elastic element. Secondly, when the first clamp and the second clamp move from the closed position to the open position, the torsion spring undergoes elastic deformation to form a continuous reverse resistance, effectively preventing the first clamp and the second clamp from opening on their own without external force, thereby preventing accidental opening and closing due to vibration, wind swing, or accidental contact as much as possible, and improving the locking stability and safety of the connector in operation.

[0012] Furthermore, the anti-loosening structure includes a stop notch on the drive rod, a limiting block and a push rod slidably disposed on the first clamp, and an elastic element for applying a pushing force to the limiting block in the direction of the stop notch. One end of the push rod abuts against the limiting block, and the other end of the push rod abuts against the spring. When the first clamp and the second clamp are in the closed position, the spring force is less than the elastic force of the elastic element, and the limiting block enters the stop notch to restrict the movement of the drive rod. When the first clamp and the second clamp are in the open position, the spring force is greater than the elastic force of the elastic element, and the push rod pushes the limiting block out of the stop notch.

[0013] Through the above technical solution, when the first and second clamps are in the closed position, i.e., during long-term operation of the composite post insulator for live-line work, the limiting block automatically engages with the stop notch of the drive rod under the action of the corresponding elastic element, forming a mechanical rigid limit. This effectively prevents the drive rod from shifting due to vibration or external forces, achieving reliable anti-loosening. At this time, the spring connected to the push rod is in a natural or low-stress state and does not participate in locking, avoiding fatigue caused by long-term force. When the first and second clamps need to be opened, the spring is in a deformed state, and the spring force is greater than the spring force of the limiting block's reset elastic element. The push rod can actively push the limiting block to overcome the resistance of the elastic element and exit the stop notch, achieving automatic unlocking. At this time, the user does not need to apply extra force to overcome the resistance of the anti-loosening elastic element, significantly reducing the unlocking operation force. This achieves reliable self-locking during operation and labor-saving and convenient operation by utilizing the difference in spring force and the timing of action. It is particularly suitable for live-line work scenarios that require long-term stable operation and frequent maintenance, balancing safety and ease of operation.

[0014] Furthermore, the anti-loosening structure includes a stop hole in the second clamping body, a stop groove in the first threaded section and the second threaded section, a limiting pin located in the stop hole and axially movable, and an elastic element for applying axial preload to the limiting pin. When the first clamping body and the second clamping body are in the closed or open position, the limiting pin extends into the stop groove of the first threaded section or the second threaded section under the action of the elastic element to limit the rotation of the drive rod.

[0015] With the above technical solution, when the first clamp and the second clamp move to the closed position or the open position, the limiting pin automatically embeds into the corresponding stop groove under the pre-pressure of the elastic element. No additional operation is required to achieve rigid limiting of the rotation of the drive rod, which can prevent the threads from loosening due to vibration, wind, etc., and ensure the locking stability and safety of the wiring component in operation.

[0016] Furthermore, the length of the first threaded segment is greater than the length of the second threaded segment.

[0017] Through the above technical solution, under normal live-line working conditions, the connector is in the closed position for a long time and must withstand long-term loads such as the weight of the conductor, wind load, and vibration, requiring high connection reliability. The open position is only used briefly during equipment maintenance or installation, with low frequency and short duration. By designing a longer first threaded section corresponding to the closed position, its engagement length with the threaded hole can be increased, thereby improving connection strength and resistance to loosening. This effectively prevents self-loosening due to vibration during long-term operation. At the same time, the longer threaded section also increases the difficulty of accidental unlocking under abnormal operation, improving operational safety. The second threaded section only needs to meet the temporary positioning function of the open position and does not need to be excessively long. Appropriately shortening it can reduce the overall axial dimension, facilitating installation and operation.

[0018] Furthermore, the first clamp and the second clamp are pivoted at a hinge shaft, with a power arm on one side for transmitting operating force and a resistance arm on the other side for clamping live wires. The power arm of the second clamp is bent upward relative to the resistance arm, and the power arm of the first clamp is bent upward relative to the resistance arm. The drive rod is horizontally positioned.

[0019] With the above technical solution, since the openings of the first clamp and the second clamp are also horizontal, when the drive rod is operated, the live wire moves away from the opening and always stays against the first clamp and the second clamp, making it difficult to fall off.

[0020] Furthermore, the wiring component is detachably connected to the insulator body via threaded fasteners or snap-fit ​​structures.

[0021] With the above technical solution, when it is necessary to replace or repair the connector or the insulator body, it is not necessary to replace the entire device. Only the fasteners need to be removed or the clips need to be released to achieve quick separation of the two, which greatly reduces maintenance costs and material waste. Especially when only the insulator body needs to be replaced, the connector and the conductor can be left on the live conductor. Only the insulator body needs to be removed for replacement, avoiding the repeated operation of disassembling and assembling the connector on the live conductor. This effectively solves the problems of difficult alignment and unstable installation caused by the swaying of the insulator in the suspended state, significantly improving the stability and safety of high-altitude live work, while reducing repeated clamping damage to the conductor, improving work efficiency and equipment reliability.

[0022] Another objective of this invention is to disclose a method for using a composite post insulator that allows for live-line work, characterized in that it includes the composite post insulator that allows for live-line work as described in any of the above technical solutions, and the method for using the composite post insulator that allows for live-line work includes S1: setting an insulating shield on the live conductor;

[0023] S2: Remove the old insulator;

[0024] S3: Operate the drive rod to make the second threaded section engage with the threaded hole, the first clamp and the second clamp are in the open position, and the live wire is inserted into the first clamp and the second clamp.

[0025] S4: Operate the drive rod by operating the insulating operating rod to make the first threaded section threadedly engage with the threaded hole, and the first clamp and the second clamp are in the closed position.

[0026] The above technical solution effectively isolates the work area and ensures operator safety by installing insulating shields on the energized conductor. During replacement, there is no need to repeatedly disassemble and reassemble the connectors and conductors; the connectors of the new insulator are pre-opened and inserted into the energized conductor. Then, the insulating operating rod drives the first threaded section into the threaded hole, closing and locking the first and second clamps. This process avoids repeated clamping and positioning of the conductor in a high-altitude energized environment, significantly reducing alignment difficulties and installation risks caused by insulator swaying. Furthermore, the driving rod uses a double-threaded section structure, requiring only a few rotations in one direction to complete the closing action. The operation is simple and responsive, and the anti-loosening structure enables self-locking upon positioning, improving connection reliability.

[0027] Another objective of this invention is to disclose a method for using a composite post insulator that allows for live-line work, characterized in that it includes the composite post insulator that allows for live-line work as described in any of the above technical solutions, and the method for using the composite post insulator that allows for live-line work includes S1: the operator wears insulating gloves and sets up insulating shields on the live conductor;

[0028] S2: Remove the old insulator;

[0029] S3: Operate the drive rod to make the second threaded section engage with the threaded hole, the first clamp and the second clamp are in the open position, and the live wire is inserted into the first clamp and the second clamp.

[0030] S4: By operating the drive rod with an electric wrench, the first threaded section is threadedly engaged with the threaded hole, and the first clamp and the second clamp are in the closed position.

[0031] The above technical solution achieves double insulation protection by having operators wear insulated gloves and set up insulating shields on live conductors, effectively ensuring personal safety when working near electricity. During the replacement process, there is no need to repeatedly disassemble and reassemble the connection between the connector and the conductor. The connector of the new insulator only needs to be pre-adjusted to the open position by the drive rod, so that the second threaded section and the threaded hole can be locked together and stably kept in the open state, making it easy to smoothly insert the live conductor into the first clamp and the second clamp. Then, an electric wrench is used to drive the first threaded section into the threaded hole, quickly closing and locking the first clamp and the second clamp, greatly shortening the operation time and reducing the labor intensity of working at height. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] Figure 1 is a schematic diagram of the structure of the live-line working composite post insulator of the present invention in the closed position;

[0034] Figure 2 is a structural schematic diagram of the composite post insulator capable of live-line operation of the present invention in the closed position from another perspective.

[0035] Figure 3 is a cross-sectional view of a portion of the structure of the live-line working composite post insulator of the present invention in the closed position.

[0036] Figure 4 is a schematic diagram of the structure of the live-line working composite post insulator of the present invention in the open position;

[0037] Figure 5 is a structural schematic diagram of the composite post insulator capable of live-line operation of the present invention in the open position from another perspective.

[0038] Figure 6 is a cross-sectional view of a portion of the structure of the live-line working composite post insulator of the present invention in the open position.

[0039] Figure 7 is a schematic diagram of the drive rod of the present invention;

[0040] Figure 8 is a schematic diagram of the closed position of the composite post insulator capable of live-line operation according to another embodiment of the present invention;

[0041] Figure 9 is a schematic diagram of the open position of the composite post insulator capable of live-line work according to another embodiment of the present invention;

[0042] In the diagram, 10 is the insulator body; 21 is the first clamping body; 211 is the limiting block; 212 is the push rod; 213 is the elastic element; 214 is the movable groove; 215 is the movable channel; 22 is the second clamping body; 220 is the threaded hole; 23 is the drive rod; 231 is the optical axis section; 232 is the first threaded section; 233 is the second threaded section; 234 is the operating ring; 235 is the groove; 236 is the stop notch; 24 is the hinge shaft; 25 is the spring; 26 is the power arm; 27 is the resistance arm; and 28 is the opening. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0044] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0045] It should be understood that in the various embodiments of the present invention, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0046] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0047] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0048] The technical solution of the present invention will be described in detail below with reference to specific embodiments. The following specific embodiments may be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0049] Example 1:

[0050] As shown in Figures 1 to 7, the present invention provides a composite post insulator capable of live-line operation, comprising an insulator body 10 and a connector for clamping live conductors. The connector includes a first clamp 21 and a second clamp 22 hinged together by a hinge shaft 24, and a drive rod 23 for driving the relative movement of the first clamp 21 and the second clamp 22. The first clamp 21 and the second clamp 22 have a closed position and an open position. The drive rod 23 is rotatably connected to the first clamp 21. The second clamp 22 is provided with a threaded hole 220. The device includes a central optical axis section 231 and a first threaded section 232 and a second threaded section 233 located at both ends of the optical axis section 231. When the first clamping body 21 and the second clamping body 22 are in the closed position, the first threaded section 232 is threadedly engaged with the threaded hole 220. When the first clamping body 21 and the second clamping body 22 are in the open position, the second threaded section 233 is threadedly engaged with the threaded hole 220. When the first clamping body 21 and the second clamping body 22 move between the closed position and the open position, the optical axis section 231 can slide through the threaded hole 220.

[0051] When the first clamp 21 and the second clamp 22 switch between the closed and open positions, the optical shaft section 231 can slide through the threaded hole 220 without being screwed in. Only a few rotations are needed to complete the opening and closing action, which greatly reduces the number of operation rotations, shortens the operation stroke, and greatly improves the efficiency of high-altitude live-line work. The closed position is locked by the threaded engagement of the first threaded section 232 and the threaded hole 220, and the open position is fixed by the threaded connection of the second threaded section 233. Both working states form a clear mechanical limit through the threaded structure, so that the wiring component can be reliably locked in operation and maintenance states, effectively reducing unexpected actions caused by wind vibration or external force interference. At the same time, the operator can judge whether the clamping or releasing is in place by the change in feel or sudden change in resistance during the rotation process, achieving precise positioning and further ensuring the reliability of the connection and the safety of operation.

[0052] It should be noted that the first clamp 21 and the second clamp 22 are pivoted at the hinge shaft 24. One side of each clamp has a power arm 26 for transmitting operating force, and the other side has a resistance arm 27 for clamping live wires. The inner side of the resistance arm 27 has a groove 235 that matches the shape of the wire, which is used to stably accommodate and clamp the wire, reducing contact stress. The power arm 26 of the first clamp 21 has a through hole, and the power arm 26 of the second clamp 22 has a threaded hole 220. The drive rod 23 passes through the through hole of the first clamp 21 and engages with the threaded hole 220 of the second clamp 22. By rotating the drive rod 23, the second clamp 22 is driven to rotate relative to the first clamp 21 around the hinge shaft 24, thereby realizing the opening and closing action. Preferably, the length of the power arm 26 is greater than that of the resistance arm 27, forming a force-saving lever structure, which significantly reduces the torque required for operation. This makes it easier and more efficient to drive remotely using an insulated operating rod or power tool. Especially in high-altitude live-line working environments, it can effectively reduce operating resistance and improve the stability and safety of the operation. An operating ring 234 may be provided on the drive rod 23 for easy hooking with an insulated operating rod, enabling remote control, especially in environments with limited space or poor visibility, facilitating tool positioning and force application, and effectively reducing operational difficulty. The diameter of the optical axis section 231 is smaller than the diameter of the threaded hole 220, allowing the optical axis section 231 to slide through the threaded hole 220 with reduced or even no obstruction when switching between the closed and open positions of the first clamp 21 and the second clamp 22, without engaging or forming a threaded fit with the threaded hole 220, thus significantly reducing the number of rotations of the drive rod 23. In the open position, the opening 28 of the first clamp 21 and the second clamp 22 may be 35mm, facilitating the entry or exit of live wires into or out of the groove 235.

[0053] In this embodiment, the power arm 26 of the second clamp 22 bends upward relative to the resistance arm 27, and the power arm 26 of the first clamp 21 bends upward relative to the resistance arm 27, so that the drive rod 23 is set horizontally, that is, set radially along the insulator body 10. The openings 28 of the first clamp 21 and the second clamp 22 are also in the horizontal direction. In this way, when the drive rod 23 is operated, the live wire moves away from the opening 28, that is, it always abuts against the first clamp 21 and the second clamp 22, and is not easy to fall off.

[0054] It should be noted that the drive rod 23, the first clamp 21 and the second clamp 22 can be made of aluminum alloy, which has the advantages of being lightweight and highly corrosion resistant. This helps to reduce the overall weight, reduce the burden of working at height, and meet the requirements of environmental tolerance.

[0055] Under normal live-line working conditions, the connector is in the closed position for extended periods, bearing long-term loads such as conductor weight, wind load, and vibration, requiring high connection reliability. The open position, however, is only used briefly during equipment maintenance or installation, with low frequency and short duration. Therefore, in this application, the length of the first threaded segment 232 is greater than the length of the second threaded segment 233. By designing the first threaded segment 232 corresponding to the closed position to be longer, its engagement length with the threaded hole 220 is increased, thereby improving connection strength and resistance to loosening, effectively preventing self-loosening due to vibration during long-term operation. Simultaneously, the longer threaded segment also increases the difficulty of accidental unlocking under abnormal operation, enhancing operational safety. The second threaded segment 233 only needs to fulfill the temporary positioning function of the open position; an excessively long structure is unnecessary, and appropriately shortening it can reduce the overall axial dimension, facilitating installation and operation.

[0056] The first threaded section 232 and the second threaded section 233 have the same helical direction. During operation, the drive rod 23 only needs to rotate in a single direction to switch the first clamp 21 from closed to open or from open to closed. The operation logic is unified, and there is no need to repeatedly rotate forward and backward, which significantly improves the convenience and efficiency of high-altitude live-line work.

[0057] Since the connector is prone to loosening or accidental opening and closing under long-term operation or external disturbance, this application also includes an anti-loosening structure for keeping the first clamp 21 and the second clamp 22 in the closed or open position. This structure can prevent the first clamp 21 and the second clamp 22 from loosening or accidental opening and closing under long-term operation or external disturbance, thereby significantly improving the operational reliability and safety of the equipment.

[0058] Specifically, the anti-loosening structure includes a spring 25 mounted on the drive rod 23 and located between the first clamp 21 and the second clamp 22. When the first clamp 21 and the second clamp 22 are in the closed position, the spring 25 is in its natural state. When the first clamp 21 and the second clamp 22 move from the closed position to the open position, the spring 25 is in an elastic deformation state. When the connector is in the closed position, i.e., in normal operation, the spring 25 is in its natural state and does not bear stress, thus avoiding material fatigue, stress relaxation, or elastic decay caused by long-term stress, effectively extending the service life of the elastic element. Secondly, when the first clamp 21 and the second clamp 22 move from the closed position to the open position, the spring 25 undergoes elastic deformation to form a continuous reverse resistance, which as much as possible prevents the first clamp 21 and the second clamp 22 from opening on their own without external force, thereby preventing accidental opening and closing due to vibration, wind sway, or accidental contact, and improving the locking stability and safety of the connector in operation.

[0059] Furthermore, the anti-loosening structure also includes a stop notch 236 provided on the drive rod 23, a limiting block 211 and a push rod 212 slidably provided on the first clamp 21, and an elastic member 213 for applying a pushing force to the limiting block 211 in the direction of the stop notch 236. One end of the push rod 212 abuts against the limiting block 211, and the other end of the push rod 212 abuts against the spring 25. When the first clamp 21 and the second clamp 22 are in the closed position, the elastic force of the spring 25 is less than the elastic force of the elastic member 213, and the limiting block 211 enters the stop notch 236 to restrict the movement of the drive rod 23. When the first clamp 21 and the second clamp 22 are in the open position, the elastic force of the spring 25 is greater than the elastic force of the elastic member 213, and the push rod 212 pushes the limiting block 211 out of the stop notch 236.

[0060] When the first clamp 21 and the second clamp 22 are in the closed position, indicating the long-term operation of the composite post insulator under live-line working conditions, the limiting block 211 automatically engages in the stop notch 236 of the drive rod 23 under the action of the corresponding elastic element 213, forming a mechanical rigid limit. This effectively prevents the drive rod 23 from displacing due to vibration or external forces, achieving reliable anti-loosening. At this time, the spring 25 connected to the push rod 212 is in a natural or low-stress state and does not participate in locking, avoiding fatigue caused by long-term stress. When the first clamp 21 and the second clamp 22 need to be opened, the spring 25 is in a deformed state. The elastic force of the spring 25 is greater than the elastic force of the reset elastic element 213 of the limiting block 211. The push rod 212 can actively push the limiting block 211 to overcome the resistance of the elastic element 213 and exit the stop notch 236, achieving automatic unlocking. At this time, the user does not need to apply extra force to overcome the resistance of the anti-loosening elastic element 213, which significantly reduces the unlocking operation force. This enables reliable self-locking during operation and easy and convenient operation by utilizing the difference in elastic force and action sequence of the spring 25. It is particularly suitable for live-line work scenarios that require long-term stable operation and frequent maintenance, taking into account both safety and user-friendliness.

[0061] It should be noted that the first clamp 21 is also provided with a movable groove 214 and a movable channel 215. The limiting block 211 and the elastic element 213 are disposed in the movable groove 214. The movable channel 215 constrains and guides the sliding direction of the limiting block 211, so that it can only move in the set direction, and prevents deflection or jamming as much as possible. At the same time, it provides installation space and compression stroke limit for the elastic element 213, ensuring its normal extension and contraction. The push rod 212 is slidably disposed in the movable channel 215, restricting its movement trajectory, and ensuring that the push rod 212 can smoothly push the limiting block 211 in the predetermined direction as much as possible.

[0062] Furthermore, the connector and the insulator body 10 are detachably connected via threaded fasteners. When it is necessary to replace or repair the connector or the insulator body 10, it is not necessary to replace the entire device; only the fasteners need to be removed to achieve quick separation, which significantly reduces maintenance costs and material waste. Especially when only the insulator body 10 needs to be replaced, the connector and the conductor can be left on the live conductor, and only the insulator body 10 needs to be removed for replacement. This avoids the repeated operation of disassembling and assembling the connector on the live conductor, effectively solving problems such as alignment difficulties and unstable installation caused by the swaying of the insulator in its suspended state. This significantly improves the stability and safety of high-altitude live-line work, while reducing repeated clamping damage to the conductor, improving work efficiency and equipment reliability.

[0063] Specifically, a metal insert with mounting holes is provided on the top of the insulator body 10, and the metal insert is pre-embedded in the insulator body 10 along the axial direction; a mounting flange is provided at the bottom of the connector, and a through hole corresponding to the position of the metal insert is opened on it; during assembly, the mounting flange of the connector is aligned with the top of the insulator body 10, and a bolt is passed through the through hole on the connector flange and screwed into the threaded hole 220 of the metal insert. The connector is then firmly fixed to the insulator body 10 by tightening the bolt; during disassembly, the connector can be removed as a whole simply by unscrewing the bolt, achieving quick separation.

[0064] As shown in Figures 8 and 9, it can be understood that in other embodiments, in this embodiment, the power arm 26 and resistance arm 27 of the second clamp 22 are arranged in a straight line, and the power arm 26 and resistance arm 27 of the first clamp 21 tend to be arranged in a straight line, so that the drive rod 23 is set at an angle, and the operator can operate from bottom to top.

[0065] Understandably, in other embodiments, the anti-loosening structure includes a torsion spring mounted on the hinge shaft, with its two ends abutting against the first clamp and the second clamp respectively. When the first clamp and the second clamp are in the closed position, the torsion spring is in its natural state. When the first clamp and the second clamp move from the closed position to the open position, the torsion spring is in an elastic deformation state. When the connector is in the closed position, i.e., in normal operation, the torsion spring is in its natural state and does not bear stress, thus minimizing material fatigue, stress relaxation, or elastic attenuation caused by long-term stress and effectively extending the service life of the elastic element. Secondly, when the first clamp and the second clamp move from the closed position to the open position, the torsion spring undergoes elastic deformation, forming a continuous reverse resistance, effectively preventing the first clamp and the second clamp from opening on their own without external force, thereby minimizing the risk of accidental opening or closing due to vibration, wind sway, or accidental contact, and improving the locking stability and safety of the connector in operation.

[0066] Understandably, in other embodiments, the connector and the insulator body are detachably connected via a snap-fit ​​structure. When it is necessary to replace or repair the connector or the insulator body, it is not necessary to replace the entire device; simply releasing the snap-fit ​​allows for quick separation, significantly reducing maintenance costs and material waste. Especially when only the insulator body needs replacement, the connector and conductor can be left on the live conductor, and only the insulator body needs to be removed for replacement. This avoids repeated installation and removal of the connector on the live conductor, effectively solving problems such as alignment difficulties and unstable installation caused by the swaying of the suspended insulator. It significantly improves the stability and safety of high-altitude live-line work, while reducing repeated clamping damage to the conductor, thus improving work efficiency and equipment reliability. Specifically, the insulator body has an outer flange, and the connector has a swing snap-fit ​​with a locking tongue. Pressing down the snap-fit ​​causes the locking tongue to engage under the flange for locking.

[0067] Example 2:

[0068] This embodiment discloses a method for using a composite post insulator that allows for live-line work, characterized in that it includes any of the above-mentioned technical solutions for a composite post insulator that allows for live-line work, and the method for using the composite post insulator that allows for live-line work includes S1: setting an insulating shield on a live conductor;

[0069] S2: Remove the old insulator;

[0070] S3: Operate the drive rod to make the second threaded section engage with the threaded hole, the first clamp and the second clamp are in the open position, and the live wire is inserted into the first clamp and the second clamp.

[0071] S4: Operate the drive rod by operating the insulating operating rod to make the first threaded section engage with the threaded hole, and the first clamp and the second clamp are in the closed position.

[0072] The above technical solution effectively isolates the work area and ensures operator safety by installing insulating shields on the energized conductor. During replacement, there is no need to repeatedly disassemble and reassemble the connectors and conductors; the connectors of the new insulator are pre-opened and inserted into the energized conductor. Then, the insulating operating rod drives the first threaded section into the threaded hole, closing and locking the first and second clamps. This process avoids repeated clamping and positioning of the conductor in a high-altitude energized environment, significantly reducing alignment difficulties and installation risks caused by insulator swaying. Furthermore, the driving rod uses a double-threaded section structure, requiring only a few rotations in one direction to complete the closing action. The operation is simple and responsive, and the anti-loosening structure enables self-locking upon positioning, improving connection reliability.

[0073] Example 3:

[0074] This embodiment discloses a method for using a composite post insulator that allows for live-line work, characterized in that it includes any of the above-mentioned technical solutions for a composite post insulator that allows for live-line work. The method for using the composite post insulator that allows for live-line work includes S1: the operator wears insulating gloves and sets up insulating shields on the live conductor.

[0075] S2: Remove the old insulator;

[0076] S3: Operate the drive rod to make the second threaded section engage with the threaded hole, the first clamp and the second clamp are in the open position, and the live wire is inserted into the first clamp and the second clamp.

[0077] S4: By operating the drive rod with an electric wrench, the first threaded section is threaded into the threaded hole, and the first clamp and the second clamp are in the closed position.

[0078] The above technical solution achieves double insulation protection by having operators wear insulated gloves and set up insulating shields on live conductors, effectively ensuring personal safety when working near electricity. During the replacement process, there is no need to repeatedly disassemble and reassemble the connection between the connector and the conductor. The connector of the new insulator only needs to be pre-adjusted to the open position by the drive rod, so that the second threaded section and the threaded hole can be locked together and stably kept in the open state, making it easy to smoothly insert the live conductor into the first clamp and the second clamp. Then, an electric wrench is used to drive the first threaded section into the threaded hole, quickly closing and locking the first clamp and the second clamp, greatly shortening the operation time and reducing the labor intensity of working at height.

[0079] Using an electric wrench for quick tightening, insulators and live conductors can be secured within 15 seconds, whereas binding with binding wire takes at least 1 minute. This eliminates the safety hazards caused by insufficient personal safety distance due to the length of the binding wire coil and winding, and also avoids inconsistent binding quality caused by maintenance processes and static induction caused by the binding wire material.

[0080] In addition to the preferred embodiments described above, the present invention has other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection claimed by the present invention.

Claims

1. A composite post insulator capable of live-line work, comprising an insulator body and a connector for clamping live conductors, characterized in that, The connector includes a first clamp and a second clamp hinged together by a hinge shaft, and a drive rod for driving the relative movement of the first clamp and the second clamp. The first clamp and the second clamp have a closed position and an open position. The drive rod is rotatably connected to the first clamp. The second clamp is provided with a threaded hole. The drive rod includes a central optical axis section and a first threaded section and a second threaded section located at both ends of the optical axis section. When the first clamp and the second clamp are in the closed position, the first threaded section is threaded into the threaded hole. When the first clamp and the second clamp are in the open position, the second threaded section is threaded into the threaded hole. When the first clamp and the second clamp move between the closed position and the open position, the optical axis section can slide through the threaded hole.

2. The composite post insulator capable of live-line work according to claim 1, characterized in that, The connector also includes an anti-loosening structure for keeping the first clamp and the second clamp in a closed or open position.

3. The composite post insulator capable of live-line work according to claim 2, characterized in that, The anti-loosening structure includes a spring disposed on the drive rod and located between the first clamp and the second clamp. When the first clamp and the second clamp are in the closed position, the spring is in a natural state. When the first clamp and the second clamp move from the closed position to the open position, the spring is in an elastic deformation state.

4. The composite post insulator capable of live-line work according to claim 2, characterized in that, The anti-loosening structure includes a torsion spring mounted on the hinge shaft, with its two ends abutting against a first clamp and a second clamp respectively. When the first clamp and the second clamp are in the closed position, the torsion spring is in a natural state. When the first clamp and the second clamp move from the closed position to the open position, the torsion spring is in an elastic deformation state.

5. The composite post insulator capable of live-line work according to claim 3, characterized in that, The anti-loosening structure includes a stop notch on the drive rod, a limiting block and a push rod slidably disposed on the first clamp, and an elastic element for applying a pushing force to the limiting block in the direction of the stop notch. One end of the push rod abuts against the limiting block, and the other end of the push rod abuts against the spring. When the first clamp and the second clamp are in the closed position, the spring force is less than the elastic force of the elastic element, and the limiting block enters the stop notch to restrict the movement of the drive rod. When the first clamp and the second clamp are in the open position, the spring force is greater than the elastic force of the elastic element, and the push rod pushes the limiting block out of the stop notch.

6. The composite post insulator capable of live-line work according to claim 1, characterized in that, The length of the first threaded segment is greater than the length of the second threaded segment.

7. The composite post insulator capable of live-line work according to claim 1, characterized in that, The first clamp and the second clamp are pivoted at a hinge shaft. One side of the clamp forms a power arm for transmitting operating force, and the other side forms a resistance arm for clamping live wires. The power arm of the second clamp is bent upward relative to the resistance arm, and the power arm of the first clamp is bent upward relative to the resistance arm. The drive rod is horizontally positioned.

8. The composite post insulator capable of live-line work according to claim 1, characterized in that, The connector and the insulator body are detachably connected via threaded fasteners or snap-fit ​​structures.

9. A method for using a composite post insulator suitable for live-line work, characterized in that, The method of using the live-line working composite post insulator, as described in any one of claims 1 to 8, includes: S1: setting an insulating shield on the live conductor; S2: removing the old insulator; S3: operating the drive rod to engage the second threaded section with the threaded hole, placing the first clamp and the second clamp in the open position, and inserting the live conductor into the first clamp and the second clamp; S4: operating the drive rod via the insulating operating rod to engage the first threaded section with the threaded hole, placing the first clamp and the second clamp in the closed position.

10. A method for using a composite post insulator suitable for live-line work, characterized in that, The method of using the live-line working composite post insulator, as described in any one of claims 1 to 8, includes: S1: the operator wears insulating gloves and sets up an insulating shield over the live conductor; S2: the old insulator is removed; S3: the drive rod is operated to make the second threaded section threaded into the threaded hole, the first clamp and the second clamp are in the open position, and the live conductor is inserted into the first clamp and the second clamp; S4: the drive rod is operated by an electric wrench to make the first threaded section threaded into the threaded hole, and the first clamp and the second clamp are in the closed position.

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