Tool for replacing ice area ground wire strain insulator string of extra-high voltage line

Abstract

The application provides a replacement tool for an extra-high voltage line ground wire ice area strain insulator string, which comprises a first connecting mechanism, a second connecting mechanism and an extension mechanism. The first connecting mechanism comprises a first connecting body and a first connecting piece, and the first connecting piece is configured to connect a first connecting plate at one end of the insulator string with the first connecting body. The second connecting mechanism comprises a second connecting body and a second connecting piece, and the second connecting piece is configured to connect a second connecting plate at the other end of the insulator string with the second connecting body. The extension mechanism is connected with the first connecting body and the second connecting body at two ends. The application transfers the load through the extension mechanism, is simple in stress, reduces the manpower and improves the replacement efficiency of the insulator string. In addition, the first connecting body can be connected with first connecting plates of different models through the first connecting piece, and the second connecting body can be connected with second connecting plates of different models through the second connecting piece, thereby improving the universality of the replacement tool.

Description

Technical Field

[0001] This invention relates to the field of power transmission line maintenance technology, and in particular to a tool for replacing tension insulator strings of ground wires in icy areas of ultra-high voltage power transmission lines. Background Technology

[0002] Currently, the tension composite insulator strings for grounding wires in light, medium, and heavy icing areas are frequently damaged due to the harsh weather conditions such as low temperatures and strong winds in icy regions. Regular replacement is necessary to maintain the insulation of the overhead grounding wires. However, existing replacement methods often suffer from uneven stress, require a large number of personnel, and are inefficient. Summary of the Invention

[0003] Therefore, it is necessary to provide a tool for replacing tension insulator strings of ground wires in icy areas of ultra-high voltage lines, which often suffers from uneven stress, large number of replacement personnel, and low efficiency in existing replacement methods.

[0004] The technical solution is as follows:

[0005] On the one hand, a replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines is provided, including:

[0006] A first connecting mechanism, the first connecting mechanism including a first connecting body and a first connecting member, the first connecting member being configured to connect a first connecting plate located at one end of an insulator string to the first connecting body.

[0007] A second connecting mechanism, comprising a second connecting body and a second connecting member, wherein the second connecting member is configured to connect a second connecting plate located at the other end of the insulator string to the second connecting body; and

[0008] A telescopic mechanism, the two ends of which are respectively connected to the first connecting body and the second connecting body, and the length of the telescopic mechanism along its own axis is adjustable.

[0009] The replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines described in the above embodiments involves the following steps when replacing insulator strings on the transmission line. First, the first connecting plate is connected to the first connecting body via the first connecting member, and the second connecting plate is connected to the second connecting body via the second connecting member. Then, after connecting both ends of the telescopic mechanism to the first and second connecting bodies respectively, the telescopic mechanism retracts to a preset length, ensuring that the relative position between the first and second connecting plates remains fixed during the replacement of the insulator string. Finally, the insulator string between the first and second connecting plates is removed, a new insulator string is installed, and after connecting both ends of the new insulator string to the first and second connecting plates respectively, the telescopic mechanism resets to facilitate the removal and recycling of the replacement tool. This application transfers the load through a telescopic mechanism, simplifying the force application and allowing one person to complete the insulator string replacement operation, reducing manpower and improving the efficiency of insulator string replacement. Simultaneously, the replacement tool has a simple, lightweight, and flexible structure, making it easy to carry at heights. In addition, the first connecting body can be connected to different models of first connecting plates through the first connecting piece, and the second connecting body can be connected to different models of second connecting plates through the second connecting piece, ensuring that the replacement tool can be used for insulator string replacement operations in light, medium and heavy icing zones, simplifying the number of replacement tools and improving the versatility of the replacement tools.

[0010] The technical solution will be further explained below:

[0011] In one embodiment, the first connecting body is provided with a slot, and when the first connecting plate engages with the slot, the first connecting member detachably connects the first connecting plate and the first connecting body.

[0012] In one embodiment, the first connecting body is further provided with a first connecting through hole communicating with the slot. When the slot engages with the first connecting plate and the first connecting through hole communicates with the mounting through hole on the first connecting plate, the first connector passes through the first connecting through hole and the mounting through hole and is installed on the first connecting body.

[0013] In one embodiment, there are at least two first connecting holes and at least two first connectors, with each first connector corresponding to each first connecting hole.

[0014] In one embodiment, the first connecting body is further provided with a second connecting through hole communicating with the slot. When the slot is engaged with another first connecting plate and the second connecting through hole is communicating with a mounting through hole on another first connecting plate, the first connecting member passes through the second connecting through hole and the mounting through hole and is installed on the first connecting body.

[0015] In one embodiment, the first connecting body has an avoidance groove on the side where the slot is provided. Both the slot and the avoidance groove penetrate the first connecting body, and the extension direction of the slot and the extension direction of the avoidance groove are set at an angle.

[0016] In one embodiment, the bottom wall of the clearance groove is further provided with a groove extending along the extension direction of the slot.

[0017] In one embodiment, the first connecting body includes a pull lug and two pull plates, the two pull plates being spaced apart, the pull lug being located between the two pull plates and fixedly connected to one side of both pull plates, such that the pull lug and the two pull plates surround and form the slot.

[0018] In one embodiment, the pull tab is provided with at least one connecting part on the side away from the slot, and there is at least one telescopic mechanism, with each connecting part corresponding to one end of each telescopic mechanism.

[0019] In one embodiment, the replacement tool for the tension insulator string of the ground wire in the icy area of ​​the UHV line further includes a third connector, the two ends of which are respectively connected to the first connecting body and one end of the telescopic mechanism.

[0020] And / or, the replacement tool for the tension insulator string of the ground wire in the icy area of ​​the UHV line further includes a fourth connector, the two ends of which are respectively connected to the second connecting body and the other end of the telescopic mechanism. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a replacement tool according to one embodiment.

[0024] Figure 2 for Figure 1 Schematic diagram of the first installation mechanism in the middle

[0025] Figure 3 for Figure 2A schematic diagram of the first mounting mechanism from another perspective.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Tool replacement; 100. First connecting mechanism; 110. First connecting body; 111. Slot; 112. First connecting through hole; 113. Second connecting through hole; 114. Clearance groove; 115. Groove; 116. Pull lug; 117. Pull plate; 118. Connecting part; 120. First connecting piece; 200. Second connecting mechanism; 210. Second connecting body; 220. Second connecting piece; 300. Telescopic mechanism; 400. First connecting plate; 500. Second connecting plate; 600. Third connecting piece. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] like Figure 1 As shown, in one embodiment, a replacement tool 10 for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines is provided, including a first connecting mechanism 100, a second connecting mechanism 200, and a telescopic mechanism 300. The first connecting mechanism 100 includes a first connecting body 110 and a first connecting member 120, configured to connect a first connecting plate 400 located at one end of the insulator string to the first connecting body 110. The second connecting mechanism 200 includes a second connecting body 210 and a second connecting member 220, configured to connect a second connecting plate 500 located at the other end of the insulator string to the second connecting body 210. The telescopic mechanism 300 has two ends connected to the first connecting body 110 and the second connecting body 210 respectively, and its length along its own axis is adjustable.

[0030] The replacement tool 10 for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines described in the above embodiment works as follows: When an insulator string on the transmission line needs to be replaced, firstly, the first connecting plate 400 is connected to the first connecting body 110 via the first connecting member 120, and the second connecting plate 500 is connected to the second connecting body 210 via the second connecting member. Then, after connecting both ends of the telescopic mechanism 300 to the first connecting body 110 and the second connecting body 210 respectively, the telescopic mechanism 300 retracts to a preset length, ensuring that the relative position between the first connecting plate 400 and the second connecting plate 500 remains fixed during the replacement of the insulator string. Finally, the insulator string between the first connecting plate 400 and the second connecting plate 500 is removed, a new insulator string is installed, and after the two ends of the new insulator string are connected to the first connecting plate 400 and the second connecting plate 500 respectively, the telescopic mechanism 300 resets to facilitate the removal and recycling of the replacement tool 10. This application utilizes a telescopic mechanism 300 to transfer the load, simplifying the force application and allowing one person to complete the insulator string replacement operation, reducing manpower and improving the efficiency of insulator string replacement. Simultaneously, the replacement tool 10 has a simple, lightweight, and flexible structure, facilitating high-altitude transport. Furthermore, the first connecting body 110 can be connected to different models of first connecting plates 400 via the first connecting piece 120, and the second connecting body 210 can be connected to different models of second connecting plates 500 via the second connecting piece 220. This ensures that the replacement tool 10 is applicable to insulator string replacement operations in light, medium, and heavy icing zones, simplifying the number of replacement tools 10 and improving its versatility.

[0031] Specifically, in this embodiment, the replacement tool 10 is used to replace the entire string of single-strand double-strand insulators for grounding wire tension. The first connecting plate 400 and the second connecting plate 500 can be of the same or different models. Both the first connecting plate 400 and the second connecting plate 500 can be configured as triangular connecting plates or square connecting plates.

[0032] The telescopic mechanism 300 can be configured as a telescopic cylinder, a telescopic hydraulic cylinder, a lead screw, or other telescopic structures. The number of telescopic mechanisms 300 can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, the telescopic mechanism 300 is configured as a 5T labor-saving lead screw. Both the first connecting body 110 and the second connecting body 210 are made of high-strength aluminum alloy, and the lead screw is made of alloy steel. In this way, by transferring the load through the lead screw connection, the force on the first connecting plate 400 and the second connecting plate 500 is more even during the insulator string replacement operation, the diagonal tension on the first connecting plate 400 and the second connecting plate 500 is reduced, and the safety of the replacement tool 10 is improved.

[0033] Both the first connecting member 120 and the second connecting member 220 can be equipped with connecting pins, connecting buckles, connecting clamps, connecting bolts, or other connecting structures. The number of the first connecting member 120 and the second connecting member 220 can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, both the first connecting member 120 and the second connecting member 220 include bolts and nuts that are threadedly connected to the bolts.

[0034] The structure and principle of the first connecting mechanism 100 may be the same as or different from that of the second connecting mechanism 200. This application uses the example of the first connecting mechanism 100 having the same structure and principle as the second connecting mechanism 200 for illustration, and should not be construed as a limitation of this application.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, the first connecting body 110 is provided with a slot 111. When the first connecting plate 400 is engaged with the slot 111, the first connecting member 120 detachably connects the first connecting plate 400 and the first connecting body 110. In this way, the slot 111 can accommodate first connecting plates 400 of different thicknesses, simplifying the number of replacement tools 10 and improving the versatility of the replacement tools 10.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the first connecting body 110 further includes a first connecting through hole 112 communicating with the slot 111. When the slot 111 engages with the first connecting plate 400, and the first connecting through hole 112 communicates with the mounting through hole on the first connecting plate 400, the first connecting member 120 passes through the first connecting through hole 112 and the mounting through hole, and is installed on the first connecting body 110. Thus, the first connecting member 120 can limit the first connecting plate 400 within the slot 111, ensuring that the load on the telescopic mechanism 300 can be transferred to the first connecting plate 400 through the first connecting body 110 and the first connecting member 120. This ensures that the position of the first connecting plate 400 remains fixed before and after the insulator string replacement, improving the reliability and safety of the replacement tool 10.

[0037] Optionally, there are at least two first connecting through holes 112 and at least two first connecting pieces 120, with each first connecting piece 120 corresponding to each first connecting through hole 112. In this way, by increasing the number of first connecting pieces, the force on the first connecting plate 400 is more evenly distributed, reducing the risk of insulator string replacement operations and improving the safety of the replacement tool 10.

[0038] like Figure 1 , Figure 2 and Figure 3As shown, optionally, the first connecting body 110 is further provided with a second connecting through hole 113 communicating with the slot 111. When the slot 111 engages with another first connecting plate 400, and the second connecting through hole 113 communicates with the mounting through hole on the other first connecting plate 400, the first connecting member 120 passes through the second connecting through hole 113 and the mounting through hole, and is installed on the first connecting body 110. In this way, the first connecting member 120 can detachably connect the first connecting body 110 to different models of first connecting plates 400, improving the versatility of the replacement tool 10.

[0039] Specifically, in this embodiment, two insulator strings are connected between the first connecting plate 400 and the second connecting plate 500, with the two insulator strings spaced apart. The replacement tool 10 is located between the two insulator strings. There are two first connecting through holes 112, two second connecting through holes 113, and two first connecting pieces 120. The two first connecting through holes 112 are spaced apart between the two insulator strings, and the two second connecting through holes 113 are spaced apart between the two first connecting through holes 112. When the first connecting plate 400 is a square connecting plate, the two first connecting through holes 112 are connected to the two mounting through holes on the square connecting plate, and the two first connecting pieces 120 pass through the two first connecting through holes 112 and the two mounting through holes. When the first connecting plate 400 is a triangular connecting plate, the two second connecting through holes 113 are connected to the two mounting through holes on the triangular connecting plate, and the two first connecting pieces 120 pass through the two second connecting through holes 113 and the two mounting through holes.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, the first connecting body 110 has a slot 111 on one side and a clearance groove 114 on the other side. Both the slot 111 and the clearance groove 114 penetrate the first connecting body 110, and the extending direction of the slot 111 and the extending direction of the clearance groove 114 are set at an angle. Thus, when the first connecting plate is a triangular connecting plate, the corner of the triangular connecting plate away from the insulator string can be located in the clearance groove 114, ensuring that the first connecting body 110 will not interfere with the components on the triangular connecting plate, thereby improving the reliability of the replacement tool 10.

[0041] Specifically, in this embodiment, the extending direction of the slot 111 is perpendicular to the extending direction of the clearance groove 114. Along the extending direction of the slot 111, two first connecting through holes 112 are correspondingly disposed on both sides of the clearance groove 114.

[0042] Optionally, the bottom wall of the clearance groove 114 is further provided with a groove 115 extending along the extension direction of the slot 111. Specifically, in this embodiment, the groove 115 can be set as an arc-shaped groove, which also penetrates the first connecting body 110. In this way, it is easier for the user to grasp the first connecting body 110, improving the convenience of assembling the tool 10.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, the first connecting body 110 includes a pull lug 116 and two pull plates 117. The two pull plates 117 are spaced apart, and the pull lug 116 is located between the two pull plates 117 and is fixedly connected to one side of each of the two pull plates 117, so that the pull lug 116 and the two pull plates 117 form a slot 111. In this way, the pull lug 116 and the pull plates 117 can be processed separately and then assembled into one unit, improving the convenience of manufacturing the tool replacement 10.

[0044] The pull lug 116 is fixedly connected to one side of each of the two pull plates 117, and can be fixedly connected by screws, snaps, welding or other methods. Specifically, in this embodiment, the pull lug 116 and the two pull plates 117 are fixedly connected as one unit by bolts.

[0045] like Figure 1 and Figure 3 As shown, the pull lug 116 has at least one connecting part 118 on the side away from the slot 111, and at least one telescopic mechanism 300. Each connecting part 118 is connected to one end of each telescopic mechanism 300. In this way, by increasing the number of telescopic mechanisms 300 and connecting parts 118, the force on the first connecting plate 400 is more even, the diagonal tension on the first connecting plate 400 is reduced, the risk of insulator string replacement operation is reduced, and the safety of the replacement tool 10 is improved.

[0046] Specifically, in this embodiment, there are two connecting portions 118, which are spaced apart along the extension direction of the slot 111. Along the depth direction of the slot 111, the projection area of ​​the groove 115 is located between the projection areas of the two connecting portions 118. This facilitates gripping the first connecting body 110.

[0047] like Figure 1 As shown, in one embodiment, the replacement tool 10 for the tension insulator string of the ground wire in icy areas of an ultra-high voltage line further includes a third connector 600, the two ends of which are respectively connected to one end of the first connecting body 110 and the telescopic mechanism 200. Thus, the first connecting body 110 and the telescopic mechanism 200 are connected through the third connector 600, increasing the overall length of the replacement tool 10 and ensuring that the length of the replacement tool 10 can be adapted to the length of the insulator string, thereby improving the practicality of the replacement tool 10.

[0048] The third connector 600 can be configured as a connecting rod, a connecting bracket, or other connecting structure. Specifically, in this embodiment, the third connector 600 is configured as a parallel joint, with both ends of the parallel joint being screwed and fixed to one end of the telescopic mechanism 300 and the first connecting body 110, respectively. The parallel joint is made of high-strength aluminum alloy material.

[0049] Optionally, the replacement tool 10 for the tension insulator string of the ground wire in icy areas of ultra-high voltage lines also includes a fourth connector, the two ends of which are respectively connected to the other ends of the second connecting body 210 and the telescopic mechanism 300. Thus, the second connecting body 210 and the telescopic mechanism 200 are connected through the fourth connector, increasing the overall length of the replacement tool 10 and ensuring that the length of the replacement tool 10 can be adapted to the length of the insulator string, thereby improving the practicality of the replacement tool 10.

[0050] In this specific embodiment, the structure and working principle of the fourth connector are the same as those of the third connector 600, and will not be described in detail here.

[0051] To facilitate a better understanding of the working principle of the replacement tool 10, the following will describe one type of replacement tool 10 in detail.

[0052] When the insulator strings on the transmission line need to be replaced, firstly, the first connecting body 110 is fixed to the first connecting plate 400 at the crossarm end of the ground wire tension insulator string via the first connecting piece 120, and the second connecting body 210 is fixed to the second connecting plate 500 at the ground wire end of the ground wire tension insulator string via the second connecting piece 220. Then, after connecting both ends of the telescopic mechanism 300 to the first connecting body 110 and the second connecting body 210 respectively, the telescopic mechanism 300 retracts to a preset position, ensuring that the relative position between the first connecting plate 400 and the second connecting plate 500 remains fixed during the replacement of the insulator string. Finally, the insulator string between the first connecting plate 400 and the second connecting plate 500 is removed, a new insulator string is installed, and after the two ends of the new insulator string are connected to the corresponding first connecting plate 400 and second connecting plate 500 respectively, the telescopic mechanism 300 is reset to facilitate the removal and recycling of the replacement tool 10.

[0053] In other embodiments, both the first connecting body 110 and the second connecting body 210 can be configured as large connecting plate clamps, which can completely cover and wrap the first connecting plate 400 or the second connecting plate 500 at both ends of the ground wire tension insulator string before assembly and replacement.

[0054] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0059] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A tool for replacing tension insulator strings of ground wires in icy areas of ultra-high voltage power transmission lines, characterized in that, include: A first connecting mechanism, the first connecting mechanism including a first connecting body and a first connecting member, the first connecting member being configured to connect a first connecting plate located at one end of an insulator string to the first connecting body. A second connecting mechanism, comprising a second connecting body and a second connecting member, wherein the second connecting member is configured to connect a second connecting plate located at the other end of the insulator string to the second connecting body; and A telescopic mechanism, the two ends of which are respectively connected to the first connecting body and the second connecting body, and the length of the telescopic mechanism along its own axis is adjustable; The first connecting body is provided with a slot and a first connecting through hole communicating with the slot. When the slot engages with the first connecting plate and the first connecting through hole communicates with the mounting through hole on the first connecting plate, the first connecting member passes through the first connecting through hole and the mounting through hole, and the first connecting plate and the first connecting body are detachably connected. The first connecting body has a clearance groove on one side of the slot. Both the slot and the clearance groove penetrate the first connecting body, and the extension direction of the slot and the extension direction of the clearance groove are set at an angle.

2. The replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines according to claim 1, characterized in that, There are at least two first connecting holes and at least two first connectors, with each first connector corresponding to each first connecting hole.

3. The replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines according to claim 1, characterized in that, The first connecting body is also provided with a second connecting through hole communicating with the slot. When the slot is engaged with another first connecting plate and the second connecting through hole is connected with a mounting through hole on another first connecting plate, the first connecting member passes through the second connecting through hole and the mounting through hole and is installed on the first connecting body.

4. The replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines according to claim 1, characterized in that, The bottom wall of the clearance groove is also provided with a groove extending along the extension direction of the slot.

5. The replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines according to claim 1, characterized in that, The first connecting body includes a pull lug and two pull plates. The two pull plates are spaced apart. The pull lug is located between the two pull plates and is fixedly connected to one side of both pull plates, so that the pull lug and the two pull plates form the slot.

6. The replacement tool for tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines according to claim 5, characterized in that, The pull lug is provided with at least one connecting part on the side away from the slot, and there is at least one telescopic mechanism, with each connecting part corresponding to one end of each telescopic mechanism.

7. The tool for replacing tension insulator strings of ground wires in icy areas of ultra-high voltage transmission lines according to any one of claims 1 to 6, characterized in that, The replacement tool for the tension insulator string of the ground wire in ice-prone area of ​​the UHV line also includes a third connector, the two ends of which are respectively connected to the first connecting body and one end of the telescopic mechanism. And / or, the replacement tool for the tension insulator string of the ground wire in the icy area of ​​the UHV line further includes a fourth connector, the two ends of which are respectively connected to the second connecting body and the other end of the telescopic mechanism.

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