Automatic replacement device for insulator

Abstract

The invention relates to the technical field of electric power system hot-line work, and discloses an automatic replacement device for an insulator, which comprises an insulating holding rod, a moving mechanism is arranged at the top end of the insulating holding rod, a main clamping mechanism is movably arranged at the top of the moving mechanism and is used for clamping and transferring the insulator in the dismounting and mounting process, and the main clamping mechanism is used for clamping and transferring the insulator in the dismounting and mounting process. Matching clamping mechanisms are arranged at the two ends of the top of the moving mechanism and used for clamping and fixing an insulator to be disassembled or installed, and a cross arm matching plate used for being matched with a cross arm for positioning is arranged on one side of the moving mechanism. The integrated moving mechanism, the main clamping mechanism, the matched clamping mechanism and the insulator mounting mechanism are arranged at the top end of the insulating holding rod, so that an operator can complete dismounting and mounting operation of an insulator under the condition of being far away from an electrified body. The device is held by the insulating holding rod, and an operator does not need to directly contact an electrified body, so that the safety risk of live working is reduced, and the working safety is improved.

Description

Technical Field

[0001] This invention relates to the field of live-line working technology in power systems, and more particularly to an automatic insulator replacement device. Background Technology

[0002] In overhead transmission lines, insulators are an important component and one of the most numerous devices used in the power system. Their main function is to provide insulation and support between conductors at different potentials or between conductors and grounding components, keeping the conductors insulated from the towers or the ground. They also bear the vertical load, horizontal load, and tension of the conductors, playing a crucial role in the safe transmission of electrical energy.

[0003] Because overhead transmission lines operate outdoors for extended periods, insulators are susceptible to contamination, aging, lightning strikes, and other factors, leading to varying degrees of degradation in their mechanical and insulation properties, and even damage such as cracking. Once insulators age or become damaged, they can easily cause leakage current, abnormal line tripping, or even large-scale power outages, severely impacting the safe operation of transmission lines. Therefore, when insulators show signs of performance degradation or damage, they must be promptly removed and replaced with new ones.

[0004] Existing methods for live-line insulator replacement are typically categorized into indirect and direct operations based on the positional relationship between the worker and the live conductor. They are further classified according to the worker's own electrical potential: ground potential live-line operation, intermediate potential live-line operation, and equipotential live-line operation. These traditional live-line operation methods mostly require workers to climb onto scaffolding to reach the crossarm or be transported to the crossarm using an insulated bucket truck to complete the task.

[0005] In actual operation, the existing methods for replacing insulators under energized conditions still have many shortcomings. First, they have poor adaptability to the working environment. Current live-line operations mostly rely on insulated bucket trucks, but in complex terrain areas such as hillsides, potholes, streets, and farmland, insulated bucket trucks often have difficulty entering the working position, making it impossible to carry out live-line insulator replacement operations.

[0006] Secondly, the work efficiency is low. During insulator replacement, the position of the workers needs to be constantly adjusted using the insulator bucket truck, and the bucket of the insulator bucket truck usually accommodates two workers, resulting in a cramped working space and inconvenient operation. In addition, the bottom nuts of the insulators usually need to be manually tightened by the workers, further increasing the work time and making the overall replacement efficiency low.

[0007] Secondly, the safety of workers cannot be fully guaranteed. During live-line work, workers need to come into direct contact with live conductors. Although they wear protective equipment such as insulated gloves, there is still a high safety risk. At the same time, workers are performing complex operations at height, which increases the risk of accidents and poses a significant threat to their personal safety.

[0008] In summary, existing methods for live-line insulator replacement are inadequate in terms of adaptability to the working environment, work efficiency, and worker safety. There is an urgent need for an insulator replacement device and method that can be used in complex environments, has high operating efficiency, and is safer, in order to meet the actual needs of live-line operations on transmission lines. Summary of the Invention

[0009] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic replacement device for insulators.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An automatic insulator replacement device includes an insulator holding rod. A moving mechanism is provided at the top of the insulator holding rod. A main clamping mechanism is movably mounted on the top of the moving mechanism for clamping and transferring the insulator during disassembly and installation. Both ends of the top of the moving mechanism are equipped with cooperating clamping mechanisms for clamping and fixing the insulator to be disassembled or installed. A crossarm cooperating plate is provided on one side of the moving mechanism for positioning in conjunction with a crossarm. An arc-shaped groove is formed on one side of the crossarm cooperating plate. An insulator installation mechanism is provided on one side of the moving mechanism, with the opening of the arc-shaped groove located in the same vertical direction as the insulator installation mechanism.

[0012] Preferably, the crossarm fitting plate has a limiting strip on one side of the arc-shaped groove. The device is installed on the crossarm by hooking the crossarm fitting plate and the limiting strip.

[0013] Preferably, the moving mechanism includes a mounting housing mounted on the top of the insulating holding rod, a lead screw is movably mounted inside the mounting housing, a lead screw slider is provided with threads on the outer periphery of the lead screw, and the side of the lead screw slider is slidably connected to the inner wall of the mounting housing.

[0014] Preferably, one end of the mounting housing is provided with a second drive motor for driving the lead screw to rotate, and the second drive motor is connected to the lead screw through a second coupling.

[0015] Preferably, a rotating platform is movably mounted on the top of the lead screw slider, and a third drive motor for driving the rotating platform to rotate is provided on one side of the lead screw slider.

[0016] Preferably, the main clamping mechanism includes a first mounting base installed on the top of the rotating platform, a second telescopic component installed on one side of the first mounting base, an L-shaped mounting plate installed on the telescopic end of the second telescopic component, a third telescopic component installed on the top of the horizontally positioned L-shaped mounting plate, a second wedge block installed on the telescopic end of the third telescopic component, two main clamping claws movably installed on the top of the L-shaped mounting plate, and a second U-shaped groove for accommodating insulators opened at one end of the top of the L-shaped mounting plate, the position of the second wedge block corresponding to the position of the mounting end of the main clamping claw.

[0017] Preferably, the mating clamping mechanism includes a receiving housing mounted on top of the mounting housing. The inner wall of the top of the receiving housing has a first U-shaped groove and a through hole. Two mating clamping claws are movably mounted on the inner wall of the top of the receiving housing. A first telescopic component is mounted on one side of the inner wall of the receiving housing. A first wedge block is mounted on the telescopic end of the first telescopic component. The position of the first wedge block corresponds to the opening position of the through hole and the mounting end position of the mating clamping claw.

[0018] Preferably, both the main clamping jaw and the mating clamping jaw are provided with torsion springs at their mounting ends.

[0019] Preferably, the insulator mounting mechanism includes a second mounting base mounted on the outer wall of the mounting housing, a fourth telescopic component mounted on one side of the second mounting base, a mounting plate mounted on the telescopic end of the fourth telescopic component, a first drive motor provided at the bottom of the mounting plate, and a sleeve mounted on the output shaft of the first drive motor via a first coupling.

[0020] Preferably, a linear guide rail is mounted on one side of the second mounting base, and a slider is slidably mounted on the linear guide rail, with the side of the slider connected to the mounting plate.

[0021] The beneficial effects of this invention are as follows:

[0022] By incorporating an integrated moving mechanism, main clamping mechanism, cooperating clamping mechanism, and insulator installation mechanism at the top of the insulated lifting rod, operators can perform insulator disassembly and installation operations while remaining away from live parts. During operation, the device is held by the insulated lifting rod, eliminating the need for operators to directly contact live parts, thus reducing the safety risks of live-line work and improving operational safety.

[0023] By installing a crossbeam mating plate on one side of the moving mechanism, and adding an arc-shaped groove and a limiting strip to the crossbeam mating plate, the device can be quickly positioned and engaged with the crossbeam by hooking and overlapping. This structure achieves stable installation of the device on the crossbeam without the need for additional fasteners, allowing the device to be supported by the crossbeam during operation. This reduces the physical exertion required for workers to hold the device for extended periods and improves working conditions at height.

[0024] By incorporating a horizontal moving structure consisting of a second drive motor, a lead screw, and a lead screw slider within the moving mechanism, and by installing a rotating platform and a third drive motor on top of the lead screw slider, the main clamping mechanism can be positioned horizontally and rotated angularly. This structure enables the coordinated adjustment of the displacement and angle of the main clamping mechanism, allowing for flexible adjustment of the insulator's position and orientation during disassembly, transfer, and installation, thus improving operational adaptability and ease of use.

[0025] By employing a wedge-shaped block and jaw engagement clamping structure in both the main clamping mechanism and the auxiliary clamping mechanism, and by installing torsion springs at the mounting ends of the main clamping jaws and the auxiliary clamping jaws, the clamping jaws remain in a normally open state when not driven, facilitating the placement and removal of insulators. The wedge-shaped blocks provide reliable clamping of the insulators under their pushing action. This clamping method is simple in structure, reliable in operation, and facilitates rapid clamping and release of insulators, improving the efficiency of insulator replacement operations.

[0026] By incorporating clamping mechanisms at both ends of the top of the moving mechanism, the device can pre-clamp the new insulator to be installed before disassembly, and temporarily store the disassembled old insulator after disassembly. The main clamping mechanism transfers the insulator between the two clamping mechanisms, allowing the device to complete the disassembly of the old insulator and the preparation for the installation of the new insulator in a single lifting operation. This reduces repetitive lifting and position adjustments, improving overall work efficiency.

[0027] By incorporating a screwing structure consisting of a first drive motor, a sleeve, and a first coupling into the insulator installation mechanism, the device can automatically screw the bottom nut of the insulator, replacing the traditional manual screwing method. This structure effectively reduces the labor intensity of operators and improves the efficiency and reliability of nut disassembly and installation.

[0028] By setting a linear guide rail on one side of the second mounting base and cooperating with the slider to guide the mounting plate, the vertical movement of the insulator mounting mechanism has good guidance and stability, which helps to ensure the alignment accuracy between the sleeve and the bottom nut of the insulator, thereby improving the smoothness of the nut disassembly and installation process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an automatic insulator replacement device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the main clamping mechanism in an automatic insulator replacement device according to an embodiment of the present invention;

[0031] Figure 3This is a first-view structural diagram of a clamping mechanism in an automatic insulator replacement device according to an embodiment of the present invention.

[0032] Figure 4 This is a second-view structural diagram of a clamping mechanism in an automatic insulator replacement device according to an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the insulator installation mechanism in an automatic insulator replacement device according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the linear guide rail and slider in an automatic insulator replacement device according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the moving mechanism in an automatic insulator replacement device according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the internal structure of the moving mechanism in an automatic insulator replacement device according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the installation of the crossarm mating plate in an automatic insulator replacement device according to an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the structure of an automatic insulator replacement device for disassembling insulators according to an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the structure of an automatic insulator replacement device according to an embodiment of the present invention.

[0040] In the diagram: 1-Insulated holding rod, 2-Limiting strip, 3-Matching clamping mechanism, 31-Accommodating housing, 32-First wedge block, 33-First telescopic component, 34-Through hole, 35-First U-shaped groove, 36-Matching clamping claw, 4-Main clamping mechanism, 41-First mounting base, 42-Second telescopic component, 43-L-shaped mounting plate, 44-Third telescopic component, 45-Second wedge block, 46-Main clamping claw, 47-Second U-shaped groove, 5-Crossbeam 6-Matching plate, 6-Insulator mounting mechanism, 61-Sleeve, 62-First coupling, 63-Mounting plate, 64-First drive motor, 65-Linear guide rail, 66-Second mounting base, 67-Fourth telescopic component, 68-Slider, 7-Moving mechanism, 71-Second drive motor, 72-Mounting housing, 73-Lead screw, 74-Rotating platform, 75-Third drive motor, 76-Lead screw slider, 77-Second coupling, 9-Crossarm, 10-Arc groove. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Reference Figures 1 to 11 An automatic insulator replacement device includes an insulated lifting rod 1, which is used by a worker to lift and operate the insulator from the ground or a safe distance. The insulated lifting rod 1 is a commonly used insulated operating tool in live-line work, and its top is equipped with a moving mechanism 7, allowing the worker to complete the disassembly and installation of the insulator while away from the live conductor. Through the lifting and operation of the insulated lifting rod 1, the entire device can be moved to a working position near the crossarm 9 and stably positioned at the crossarm 9.

[0043] The moving mechanism 7 serves as the installation foundation and moving carrier for various functional mechanisms. A main clamping mechanism 4 is movably mounted on the top of the moving mechanism 7. The main clamping mechanism 4 is used to clamp the insulator during insulator disassembly and installation, and to transfer the insulator after disassembling the old insulator or before installing the new one. Through the cooperation between the moving mechanism 7 and the main clamping mechanism 4, the main clamping mechanism 4 can carry the insulator between different positions during operation, thereby completing the disassembly and transfer of the insulator and the alignment operation during installation.

[0044] Both ends of the top of the moving mechanism 7 are equipped with cooperating clamping mechanisms 3, which are used to clamp and fix the insulators to be disassembled or installed. Before disassembly, one of the cooperating clamping mechanisms 3 pre-clamps the new insulator to be installed. After disassembly, the main clamping mechanism 4 can transfer the disassembled old insulator to the other cooperating clamping mechanism 3 for clamping and fixing, thus achieving temporary storage and switching of old and new insulators on the same device. Through the cooperation between the main clamping mechanism 4 and the two cooperating clamping mechanisms 3, the device can complete the disassembly of the old insulator and the preparation for the installation of the new insulator in a single lifting operation.

[0045] One side of the moving mechanism 7 is provided with a crossarm mating plate 5 for positioning in conjunction with the crossarm 9. The crossarm mating plate 5 is used for positioning in conjunction with the crossarm 9. An arc-shaped groove 10 is formed on one side of the crossarm mating plate 5. When the device is lifted to the position of the crossarm 9, the arc-shaped groove 10 corresponds to the position of the mounting threaded hole of the insulator on the crossarm 9, thereby limiting the lateral and longitudinal position of the device on the crossarm 9. Through the cooperation between the crossarm mating plate 5 and the crossarm 9, the device can form a stable support on the crossarm 9 during operation, reducing the lifting burden on the operator and ensuring the positional accuracy of the device during disassembly and installation.

[0046] One side of the moving mechanism 7 is provided with an insulator mounting mechanism 6. The opening of the arc-shaped groove 10 on the crossarm mating plate 5 is located in the same vertical direction as the insulator mounting mechanism 6, so that after the device is positioned, the insulator mounting mechanism 6 can be aligned vertically with the threaded hole position of the crossarm 9. Through this structural arrangement, after the main clamping mechanism 4 transfers the insulator to directly above the crossarm 9, the insulator mounting mechanism 6 can disassemble or install the nut at the bottom of the insulator, thereby completing the automatic replacement of the insulator.

[0047] In actual operation, the operator uses the insulated lifting rod 1 to move the device to the crossarm 9, positioning the crossarm mating plate 5 with the crossarm 9, and aligning the arc-shaped groove 10 with the threaded hole of the crossarm 9. Then, the main clamping mechanism 4, driven by the moving mechanism 7, clamps the insulator to be disassembled, and the old insulator is disassembled from the crossarm 9 under the action of the insulator installation mechanism 6. After disassembly, the main clamping mechanism 4 transfers the old insulator to the cooperating clamping mechanism 3 for clamping and fixing. Subsequently, the main clamping mechanism 4 clamps the new insulator to be installed from another cooperating clamping mechanism 3 and transfers it directly above the threaded hole of the crossarm 9, where the cooperating insulator installation mechanism 6 completes the installation of the new insulator. Through the above structure and working process, the device can complete the disassembly and installation of insulators in a single lifting operation, improving work efficiency and reducing the labor intensity and operational risks for operators.

[0048] In a preferred embodiment of the present invention, a limiting strip 2 is provided on one side of the crossarm mating plate 5 where the arc-shaped groove 10 is formed. The limiting strip 2 is fixedly connected to the crossarm mating plate 5 and extends downward along the edge of the crossarm mating plate 5. When the operator sends the device to the position of the crossarm 9 using the insulated lifting rod 1, the limiting strip 2 can cooperate with the side or edge of the crossarm 9, allowing the crossarm mating plate 5 to overlap the crossarm 9, and the limiting strip 2 provides a limiting effect on the crossarm 9.

[0049] Through the cooperation of the crossarm mating plate 5 and the limiting strip 2, the device can hook onto the crossarm 9 at the working position, allowing the device to be stably installed on the crossarm 9 before disassembly or installation. This structure enables quick installation between the device and the crossarm 9 without the need for additional fasteners, thereby reducing the physical exertion of workers when holding the device at height and ensuring that the device maintains a relatively stable position during subsequent disassembly and installation of insulators.

[0050] In a preferred embodiment of the present invention, the moving mechanism 7 is disposed at the top of the insulated lifting rod 1, and is used to support the main clamping mechanism 4 during operation and realize its horizontal movement and angular adjustment. The moving mechanism 7 includes a mounting housing 72 mounted on the top of the insulated lifting rod 1. The mounting housing 72 is used to support and protect the internal transmission components, and also serves as the mounting base for the lead screw 73, lead screw slider 76 and rotating platform 74, so that each component can operate in a relatively enclosed and stable space.

[0051] A lead screw 73 is movably mounted inside the mounting housing 72. The lead screw 73 is arranged along the length of the mounting housing 72 and has a threaded structure on its outer periphery. A lead screw slider 76 is provided on the threaded outer periphery of the lead screw 73. The lead screw slider 76 and the lead screw 73 are connected by a threaded engagement to achieve transmission. The side of the lead screw slider 76 is slidably connected to the inner wall of the mounting housing 72. This sliding connection limits the direction of movement of the lead screw slider 76, so that the lead screw slider 76 moves linearly along the inner wall of the mounting housing 72 when the lead screw 73 rotates, thereby realizing the horizontal displacement of the main clamping mechanism 4.

[0052] One end of the mounting housing 72 is equipped with a second drive motor 71 for driving the lead screw 73 to rotate. The output shaft of the second drive motor 71 is connected to the lead screw 73 through a second coupling 77. By rotating the second drive motor 71 forward or backward, the lead screw 73 is driven to rotate in the corresponding direction, thereby driving the lead screw slider 76 to move along the axial direction of the lead screw 73, realizing the horizontal movement function of the moving mechanism 7. By adopting a motor-driven lead screw transmission method, the moving mechanism 7 has the characteristics of smooth transmission and high positioning accuracy, which can meet the needs of position adjustment during the disassembly and installation of insulators.

[0053] As a further preferred embodiment, the second coupling 77 can be a double diaphragm coupling. Double diaphragm couplings feature high torsional stiffness, high transmission accuracy, and zero backlash, enabling stable torque transmission between the second drive motor 71 and the lead screw 73. Simultaneously, they compensate for any minor coaxiality deviations that may exist between the two, thereby ensuring smooth rotation of the lead screw 73 during drive, reducing transmission errors, and improving the positioning accuracy and repeatability of the lead screw slider 76 during movement.

[0054] A rotating platform 74 is movably mounted on the top of the lead screw slider 76. The rotating platform 74 supports the main clamping mechanism 4 and provides angle adjustment for the main clamping mechanism 4. The rotating platform 74 and the lead screw slider 76 are rotatably connected, allowing the rotating platform 74 to rotate relative to the lead screw slider 76 in the vertical direction. A third drive motor 75 is provided on one side of the lead screw slider 76 to drive the rotation of the rotating platform 74. Driven by the third drive motor 75, the rotating platform 74 can rotate within a set angle range, thereby driving the main clamping mechanism 4 located on top of the rotating platform 74 to adjust its angle. Combined with the horizontal movement function achieved by the lead screw 73 and the lead screw slider 76, the main clamping mechanism 4 can be adjusted in both the horizontal direction and the angular direction, thus completing the transfer of old insulators and the alignment and installation of new insulators on the same device.

[0055] In a preferred embodiment of the present invention, the main clamping mechanism 4 is disposed on the top of the rotating platform 74, and is used to clamp the insulator during the insulator disassembly and installation process, and to complete the transfer operation of the insulator during the operation. Through its cooperation with the rotating platform 74, the main clamping mechanism 4 enables the angular adjustment of the moving mechanism 7 while it moves horizontally, thereby meeting the position and posture requirements of the insulator at different stages of the operation.

[0056] The main clamping mechanism 4 includes a first mounting base 41 mounted on the top of the rotating platform 74. A second telescopic component 42 is mounted on one side of the first mounting base 41. The second telescopic component 42 is used to drive the main clamping mechanism 4 to adjust its position in the vertical direction. An L-shaped mounting plate 43 is mounted on the telescopic end of the second telescopic component 42. Through the telescopic movement of the second telescopic component 42, the L-shaped mounting plate 43 can move up and down relative to the first mounting base 41, thereby realizing the separation or connection between the insulator and the crossarm 9 during disassembly or installation.

[0057] The L-shaped mounting plate 43 has an inverted "L" shape, and its vertical part is fixedly connected to the telescopic end of the second telescopic component 42.

[0058] A third telescopic component 44 is mounted on the top of the horizontally positioned L-shaped mounting plate 43. A second wedge block 45 is mounted on the telescopic end of the third telescopic component 44. The third telescopic component 44 is used to drive the second wedge block 45 to move in a set direction, thereby generating a squeezing and pushing effect on the main clamping claw 46.

[0059] Two main clamping claws 46 are movably mounted on the top of the L-shaped mounting plate 43. The two main clamping claws 46 are arranged opposite each other, and their mounting ends are movably connected to the L-shaped mounting plate 43, so that the main clamping claws 46 can rotate when subjected to force. A second U-shaped groove 47 is opened at one end of the top of the L-shaped mounting plate 43 for accommodating the insulator. The second U-shaped groove 47 is used to limit and position the insulator during the clamping process, so that the insulator can be stably positioned between the two main clamping claws 46 and avoid displacement during the transfer process.

[0060] The position of the second wedge block 45 corresponds to the mounting end position of the main clamping claw 46. When the third telescopic component 44 drives the second wedge block 45 to move forward, the second wedge block 45 exerts a squeezing and pushing effect on the mounting end of the main clamping claw 46, causing the two main clamping claws 46 to rotate inward around their mounting positions, thereby clamping the insulator located in the second U-shaped groove 47. When the third telescopic component 44 drives the second wedge block 45 to move in the opposite direction, the main clamping claws 46 open outward under the action of their own reset structure, thereby releasing the clamping of the insulator. Through the cooperation of the wedge block and the claw, reliable clamping and rapid release of the insulator are achieved.

[0061] Preferably, both the second telescopic component 42 and the third telescopic component 44 can be electric telescopic rods. By using electric telescopic rods as telescopic components, precise control of the position of the L-shaped mounting plate 43 and the second wedge block 45 can be achieved, making the main clamping mechanism 4 stable and responsive when clamping and releasing the insulator, thus meeting the requirements for operational accuracy and reliability during live-line work.

[0062] In actual operation, the main clamping mechanism 4, in cooperation with the rotating platform 74 and the moving mechanism 7, is moved to the position of the insulator to be operated. The height of the main clamping mechanism 4 is adjusted by the second telescopic component 42, allowing the insulator to enter the second U-shaped groove 47. Subsequently, the third telescopic component 44 drives the second wedge block 45 to push the main clamping claw 46, causing the main clamping claw 46 to clamp the insulator, thereby achieving clamping of the insulator. After clamping, the main clamping mechanism 4 can carry the insulator for transfer under the action of the moving mechanism 7 and the rotating platform 74, completing the operations required for disassembly or installation.

[0063] In a preferred embodiment of the present invention, the cooperating clamping mechanism 3 is disposed on the top of the mounting housing 72 and is used to clamp and fix the insulator to be disassembled or installed during the automatic insulator replacement operation, thereby realizing the temporary storage and switching of the insulator. The cooperating clamping mechanism 3 cooperates with the main clamping mechanism 4, so that the device can complete the disassembly of the old insulator and the preparation for the installation of the new insulator in the same lifting operation, thereby improving the work efficiency.

[0064] The clamping mechanism 3 includes a receiving housing 31 installed on the top of the mounting housing 72. The top inner wall of the receiving housing 31 is provided with a first U-shaped groove 35. The first U-shaped groove 35 is used to limit and position the insulator during the clamping process, so that the insulator can be stably located in the clamping area of ​​the clamping mechanism 3 and avoid shaking or displacement during temporary storage.

[0065] Two mating clamping claws 36 are movably mounted on the top inner wall of the housing 31. The two mating clamping claws 36 are arranged opposite each other, and their mounting ends are movably connected to the housing 31, allowing the mating clamping claws 36 to rotate around their mounting positions when subjected to force. This movable connection allows the mating clamping claws 36 to move flexibly when clamping and releasing insulators, thereby adapting to the clamping requirements of different operation stages. A first telescopic component 33 is installed on one side inner wall of the housing 31. The first telescopic component 33 is used to drive the first wedge block 32 to reciprocate. The telescopic end of the first telescopic component 33 is equipped with the first wedge block 32, and the position of the first wedge block 32 corresponds to the opening position of the through hole 34 and the mounting end position of the mating clamping claws 36. When the first telescopic component 33 drives the first wedge block 32 to move inward, the first wedge block 32 exerts a squeezing and pushing effect on the mounting end of the mating clamping claw 36 through the through hole 34, causing the two mating clamping claws 36 to rotate inward around their mounting ends, thereby clamping the insulator located in the first U-shaped groove 35; when the first telescopic component 33 extends and retracts in the opposite direction, causing the first wedge block 32 to exit, the mating clamping claws 36 open outward under the action of their reset structure, thereby releasing the clamping of the insulator and realizing the release of the insulator.

[0066] A through hole 34 is also provided on the top inner wall of the housing 31. The through hole 34 is used for the first wedge block 32 to pass through or extend into the housing 31 during the driving process, thereby exerting a squeezing and pushing effect on the mating clamping claw 36. The position of the through hole 34 corresponds to the movement direction of the first wedge block 32 to ensure that the first wedge block 32 can accurately act on the mounting end of the mating clamping claw 36 under the drive of the first telescopic component 33. The position of the first wedge block 32 corresponds to the opening position of the through hole 34 and the mounting end position of the mating clamping claw 36.

[0067] Preferably, the first telescopic component 33 can be an electric telescopic rod.

[0068] In actual operation, the cooperating clamping mechanism 3 can drive the first wedge block 32 through the first telescopic component 33 before disassembly, so that the cooperating clamping claw 36 can clamp the new insulator to be installed; after disassembly, the main clamping mechanism 4 can transfer the disassembled old insulator to another cooperating clamping mechanism 3 for clamping and fixing. Through the above structural settings, the cooperating clamping mechanism 3 can undertake the function of temporary storage and fixing of insulators during automatic insulator replacement, and form a cooperative working relationship with the main clamping mechanism 4.

[0069] In a preferred embodiment of the present invention, both the main clamping jaw 46 and the mating clamping jaw 36 are provided with torsion springs at their mounting ends. The torsion springs are located at the connection points between the main clamping jaw 46, the mating clamping jaw 36 and the corresponding mounting structures, and are used to apply a restoring force to the clamping jaws when they are not subjected to the squeezing action of the wedge block, so as to keep the clamping jaws in an open state.

[0070] In a preferred embodiment of the present invention, the insulator installation mechanism 6 is disposed on the outer wall of the mounting housing 72 and is used to complete the disassembly and installation operations between the insulator and the crossarm 9 during the automatic insulator replacement operation. Through cooperation with the moving mechanism 7 and the main clamping mechanism 4, the insulator installation mechanism 6 enables the device to tighten the nut at the bottom of the insulator after clamping and transferring the insulator, thereby achieving automatic disassembly or installation of the insulator.

[0071] The insulator installation mechanism 6 includes a second mounting base 66 installed on the outer wall of the mounting housing 72. A fourth telescopic component 67 is installed on one side of the second mounting base 66. The fourth telescopic component 67 is used to drive the insulator installation mechanism 6 to adjust its position in the vertical direction. A mounting plate 63 is installed at the telescopic end of the fourth telescopic component 67. Through the telescopic movement of the fourth telescopic component 67, the mounting plate 63 can move closer to or further away from the crossarm 9 in the vertical direction to meet the height position requirements during the disassembly and installation of the insulator.

[0072] A first drive motor 64 is located at the bottom of the mounting plate 63. A sleeve 61 is mounted on the output shaft of the first drive motor 64 via a first coupling 62. The sleeve 61 engages with a nut at the bottom of the insulator. When the first drive motor 64 starts, it transmits the driving torque to the sleeve 61 via the first coupling 62, causing the sleeve 61 to rotate around its own axis, thereby tightening the nut at the bottom of the insulator. By controlling the rotation direction of the first drive motor 64, the nut can be disassembled or installed.

[0073] Preferably, the first coupling 62 can be a double diaphragm coupling.

[0074] In actual operation, after the main clamping mechanism 4 moves the insulator to be disassembled or installed to directly above the threaded hole of the crossarm 9, the position of the mounting plate 63 is adjusted by the fourth telescopic component 67 so that the sleeve 61 is aligned with the nut at the bottom of the insulator. Then, the first drive motor 64 is started, and the nut is tightened by the sleeve 61, thereby completing the disassembly of the old insulator or the installation of the new insulator. Through the above structural design, the insulator installation mechanism 6 can replace the manual tightening of the nut, improve work efficiency, and coordinate with other mechanisms of the device.

[0075] In a preferred embodiment of the present invention, a linear guide rail 65 is mounted on one side of the second mounting base 66. The linear guide rail 65 provides guidance and support for the vertical movement of the insulator mounting mechanism 6. The linear guide rail 65 is fixedly mounted on the second mounting base 66 to maintain a stable position in the overall structure of the device, thereby limiting the movement trajectory of the mounting plate 63.

[0076] A slider 68 is slidably mounted on the linear guide rail 65, forming a sliding engagement with the linear guide rail 65, allowing the slider 68 to move smoothly along the extension direction of the linear guide rail 65. This engagement between the linear guide rail 65 and the slider 68 precisely guides the direction of the mounting plate 63 during movement, preventing the mounting plate 63 from shifting or wobbling during lifting and lowering.

[0077] The method of using the automatic insulator replacement device proposed in this invention is as follows:

[0078] In actual use, the operator uses the insulated lifting rod 1 to lift the automatic changing device from the ground or a safe distance to the working position near the crossarm 9. Since the insulated lifting rod 1 is a commonly used insulated operating tool in live-line work, the operator maintains a safe distance from the live conductor throughout the entire operation, thus meeting the safety requirements for live-line work.

[0079] When the device is delivered to the crossarm 9, it is positioned by engaging with the crossarm 9 via the crossarm mating plate 5 located on one side of the moving mechanism 7. The arc-shaped groove 10 on one side of the crossarm mating plate 5 corresponds to the mounting threaded holes of the insulators on the crossarm 9. As the device approaches the crossarm 9, the arc-shaped groove 10 guides and limits the device's lateral and longitudinal position. Simultaneously, the limiting strip 2 located on the side of the crossarm mating plate 5 with the arc-shaped groove 10 engages with the side or edge of the crossarm 9, allowing the crossarm mating plate 5 to overlap the crossarm 9 and hook onto it, thus providing stable support for the device at the working position and reducing the lifting burden on the operator.

[0080] After the device completes its positioning with the crossarm 9, the moving mechanism 7, serving as the mounting base and motion carrier for each functional mechanism, begins operation. The second drive motor 71 drives the lead screw 73 to rotate, causing the lead screw slider 76 to move linearly along the inner wall of the mounting housing 72. This, in turn, drives the rotating platform 74 located on top of the lead screw slider 76 and the main clamping mechanism 4 on the rotating platform 74 to adjust their position in the horizontal direction. Simultaneously, the third drive motor 75 drives the rotating platform 74 to rotate vertically, enabling the main clamping mechanism 4 to adjust in the angular direction, thus achieving coordinated adjustment between horizontal displacement and angular rotation of the main clamping mechanism 4.

[0081] Before removing the old insulator, the new insulator to be installed can be pre-clamped by the mating clamping mechanism 3 located at one end of the top of the moving mechanism 7. At this time, the first wedge block 32 is driven by the first telescopic component 33 to exert a squeezing and pushing action on the installation end of the mating clamping claw 36, causing the two mating clamping claws 36 to rotate inward and clamp and fix the new insulator in the first U-shaped groove 35, thereby completing the temporary storage of the new insulator.

[0082] Subsequently, the main clamping mechanism 4, in cooperation with the moving mechanism 7 and the rotating platform 74, is moved to the position of the old insulator to be disassembled. The height of the main clamping mechanism 4 in the vertical direction is adjusted by the second telescopic component 42, so that the old insulator enters the second U-shaped groove 47. Then, the third telescopic component 44 drives the second wedge block 45 to push the main clamping claw 46, so that the main clamping claw 46 clamps the old insulator, thereby completing the clamping of the old insulator.

[0083] After the main clamping mechanism 4 clamps the old insulator, the insulator installation mechanism 6 begins to operate. The position of the mounting plate 63 is adjusted via the fourth telescopic component 67, aligning the sleeve 61 vertically with the nut at the bottom of the old insulator. Then, the first drive motor 64 is activated, and the nut is tightened via the sleeve 61, thus separating the old insulator from the crossarm 9. After disassembly, the main clamping mechanism 4, driven by the moving mechanism 7, moves the old insulator away from the crossarm 9 and transfers it to another cooperating clamping mechanism 3. This cooperating clamping mechanism 3 clamps and secures the old insulator, temporarily storing it.

[0084] After the old insulator is temporarily stored, the main clamping mechanism 4 clamps the new insulator from the pre-clamping clamping mechanism 3, and under the action of the moving mechanism 7 and the rotating platform 74, the new insulator is transferred to the position directly above the threaded hole of the crossarm 9. The height of the main clamping mechanism 4 is adjusted by the second telescopic component 42 so that the bottom of the new insulator is aligned with the threaded hole of the crossarm 9.

[0085] Subsequently, the position of the mounting plate 63 is adjusted again via the fourth telescopic component 67, aligning the sleeve 61 with the nut at the bottom of the new insulator. The first drive motor 64 is then started, causing the sleeve 61 to tighten the nut, thereby fixing the new insulator onto the crossarm 9. After installation, the third telescopic component 44 and the first telescopic component 33 drive the wedge block to retract. Under the reset action of the torsion spring, the main clamping jaw 46 and the cooperating clamping jaw 36 automatically open, releasing the clamping force on the insulator.

[0086] Through the above-described operation process, the automatic insulator replacement device can complete the dismantling of the old insulator, the installation of the new insulator, and the transfer and temporary storage of the insulator in a single lifting operation. Throughout the process, all mechanisms work in an orderly manner under the coordinated cooperation of the moving mechanism 7, making the insulator replacement process more continuous and efficient, while reducing the physical exertion of operators and improving the safety of live-line work.

[0087] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic replacement device for insulators, comprising an insulator holding rod (1), characterized in that, The top of the insulating holding rod (1) is provided with a moving mechanism (7), and the top of the moving mechanism (7) is movably provided with a main clamping mechanism (4) for clamping and transferring the insulator during disassembly and installation. Both ends of the top of the moving mechanism (7) are provided with cooperating clamping mechanisms (3) for clamping and fixing the insulator to be disassembled or installed. One side of the moving mechanism (7) is provided with a crossarm cooperating plate (5) for cooperating with the crossarm (9) for positioning. One side of the crossarm cooperating plate (5) is provided with an arc groove (10). One side of the moving mechanism (7) is provided with an insulator installation mechanism (6). The opening of the insulator installation mechanism (6) and the arc groove (10) are located in the same vertical direction. The moving mechanism (7) The device includes a mounting housing (72) installed at the top of the insulating lifting rod (1). A lead screw (73) is movably mounted inside the mounting housing (72). A lead screw slider (76) is provided on the outer circumference of the lead screw (73). The side of the lead screw slider (76) is slidably connected to the inner wall of the mounting housing (72). A second drive motor (71) for driving the lead screw (73) to rotate is provided at one end of the mounting housing (72). The second drive motor (71) is connected to the lead screw (73) through a second coupling (77). A rotating platform (74) is movably mounted on the top of the lead screw slider (76). A third drive motor (75) for driving the rotating platform (74) to rotate is provided on one side of the lead screw slider (76).

2. The automatic replacement device for insulators according to claim 1, characterized in that, The crossbeam mating plate (5) has an arc groove (10) and a limiting strip (2) is provided on one side.

3. The automatic replacement device for insulators according to claim 1, characterized in that, The main clamping mechanism (4) includes a first mounting base (41) installed on the top of the rotating platform (74). A second telescopic component (42) is installed on one side of the first mounting base (41). An L-shaped mounting plate (43) is installed at the telescopic end of the second telescopic component (42). A third telescopic component (44) is installed on the top of the horizontally arranged L-shaped mounting plate (43). A second wedge block (45) is installed at the telescopic end of the third telescopic component (44). Two main clamping claws (46) are movably installed on the top of the L-shaped mounting plate (43). A second U-shaped groove (47) for accommodating insulators is opened at one end of the top of the L-shaped mounting plate (43). The position of the second wedge block (45) corresponds to the position of the mounting end of the main clamping claw (46).

4. An automatic replacement device for insulators according to claim 3, characterized in that, The clamping mechanism (3) includes a receiving housing (31) installed on the top of the mounting housing (72). The top inner wall of the receiving housing (31) is provided with a first U-shaped groove (35) and a through hole (34). Two clamping claws (36) are movably installed on the top inner wall of the receiving housing (31). A first telescopic component (33) is installed on one side inner wall of the receiving housing (31). A first wedge block (32) is installed at the telescopic end of the first telescopic component (33). The position of the first wedge block (32) corresponds to the opening position of the through hole (34) and the mounting end position of the clamping claw (36).

5. An automatic replacement device for insulators according to claim 4, characterized in that, Both the main clamping claw (46) and the mating clamping claw (36) are equipped with torsion springs at their mounting ends.

6. An automatic replacement device for insulators according to claim 1, characterized in that, The insulator mounting mechanism (6) includes a second mounting base (66) mounted on the outer wall of the mounting housing (72). A fourth telescopic component (67) is mounted on one side of the second mounting base (66). A mounting plate (63) is mounted on the telescopic end of the fourth telescopic component (67). A first drive motor (64) is provided at the bottom of the mounting plate (63). A sleeve (61) is mounted on the output shaft of the first drive motor (64) through a first coupling (62).

7. An automatic replacement device for insulators according to claim 6, characterized in that, A linear guide rail (65) is mounted on one side of the second mounting base (66), and a slider (68) is slidably mounted on the linear guide rail (65). The side of the slider (68) is connected to the mounting plate (63).

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