A quick connecting device for high voltage surge arrester

Abstract

The application relates to the technical field of lightning arrester installation, in particular to a quick connecting device for a high-voltage lightning arrester, which comprises a fixed mounting frame and a limiting component; the limiting component comprises a first limiting block, a second limiting block and a clamping member; the first limiting block is connected with the fixed mounting frame through a first through hole; one end of the second limiting block is connected with a lightning arrester body; the second limiting block is clamped with the first limiting block through the clamping member, so that the lightning arrester body is connected with the fixed mounting frame. The fixed mounting frame and the limiting component are arranged, quick connection and disconnection between the lightning arrester body and the mounting frame can be realized; the limiting component is arranged in a rotating extrusion mode to form a limiting state between the first limiting block and the second limiting block, the operation is simple, and the lightning arrester can be effectively prevented from loosening or displacement during operation; the locking component further maintains the limiting state through a clamping structure, and the stability and safety of the connection are improved.

Description

TECHNICAL FIELD

[0001] The application relates to a lightning arrester mounting technology field, in particular to a lightning arrester fast connecting device. BACKGROUND

[0002] The lightning arrester is an important device for protecting electrical equipment from high voltage in the power system, and the lightning arrester is usually made of zinc oxide as a main material to form a valve piece, under normal working voltage, the zinc oxide valve piece is in a high resistance state, and has almost no influence on the power system, when lightning overvoltage or operating overvoltage occurs, the valve piece resistance rapidly decreases to form a low resistance channel, and the overvoltage energy is introduced into the grounding system to convert high voltage into low voltage, in the process of discharging overvoltage, the zinc oxide valve piece absorbs and converts the overvoltage energy into heat energy, and then the heat is dissipated through the heat capacity and heat dissipation design of the zinc oxide valve piece, so that the overvoltage energy does not cause damage to the protected equipment, the zinc oxide lightning arrester has extremely short response time, can quickly capture and suppress steep overvoltage waveforms, and after the overvoltage disappears, the valve piece rapidly returns to the high resistance state, thereby avoiding the power frequency continuous current problem that may occur in the traditional lightning arrester.

[0003] The existing power equipment needs to fix the support frame through bolts when installing the lightning arrester, and then the lightning arrester body is fixed and connected on the surface of the support frame, so that the lightning arrester body has great difficulty in disassembly during maintenance, and the disassembly time and recovery time are long, thereby reducing the practicability. SUMMARY

[0004] (I) Invention purpose

[0005] The application aims to provide a lightning arrester fast connecting device which can realize quick connection and disassembly between the lightning arrester body and the mounting frame by setting a fixed mounting frame and a limiting component, wherein the limiting component forms a limiting state between the first limiting block and the second limiting block through a rotary extrusion mode, the operation is simple, and the lightning arrester can be effectively prevented from loosening or displacement during operation, and the locking component further maintains the limiting state through a clamping structure, thereby improving the stability and safety of the connection.

[0006] (II) Technical scheme

[0007] In order to solve the above problems, the application provides a lightning arrester fast connecting device, which comprises a fixed mounting frame and a limiting component.

[0008] The fixed mounting frame is provided with a first through hole.

[0009] The limiting assembly comprises a first limiting block, a second limiting block and a clamping member, the first limiting block is connected with the fixed mounting frame through a first through hole, one end of the second limiting block is connected with the lightning arrester body, the second limiting block is clamped with the first limiting block through the clamping member, so that the lightning arrester body is connected with the fixed mounting frame.

[0010] The clamping member comprises a limiting part and a locking part.

[0011] The limiting part is extruded with the first limiting block through rotation, so that the first limiting block and the second limiting block form a limiting state, and the locking part is clamped, so that the first limiting block and the second limiting block are locked and the limiting state is maintained.

[0012] In another aspect of the application, preferably, the first limiting block is internally provided with a first cavity with one end open, and the horizontal cross section of the first cavity is circular.

[0013] The clamping member comprises a clamping body, and the outer peripheral wall of the clamping body is matched with the inner peripheral wall of the first limiting block.

[0014] The inner peripheral wall of the clamping body is matched with the outer peripheral wall of the second limiting block and limits relative rotation.

[0015] In another aspect of the application, preferably, the inner peripheral wall of the first limiting block is provided with a protrusion, the limiting part comprises a sliding block, and the second limiting block is provided with a limiting groove; when the clamping body rotates together with the second limiting block, the sliding block and the protrusion are extruded, the sliding block slides into the limiting groove, and a limiting state is formed.

[0016] In another aspect of the application, preferably, one end of the sliding block in contact with the protrusion is provided with a transition structure, and the transition structure gradually increases in length from an initial segment to a terminal segment, so that the sliding block gradually slides into the limiting groove during rotation, and cooperates with the limiting groove after sliding, thereby limiting the relative position of the first limiting block and the second limiting block, and forming a limiting state.

[0017] In another aspect of the application, preferably, the sliding block is provided with a sliding block limiting groove, the sliding block is connected with the clamping body through the sliding block limiting groove, and the sliding block moves relative to the clamping body through the sliding block limiting groove.

[0018] In another aspect of the application, preferably, the protrusion is provided in an arc-shaped structure.

[0019] Another aspect of the present application, preferably, the locking component includes a locking rod and a locking slot, the locking slot is arranged on the clamping body, the first limiting block is provided with a second through hole, and the locking rod passes through the second through hole and is clamped with the locking slot.

[0020] Another aspect of the present application, preferably, the locking slot is provided as two, one locking slot corresponds to the release state of the first limiting block and the second limiting block, and the other locking slot corresponds to the limiting state of the first limiting block and the second limiting block.

[0021] Another aspect of the present application, preferably, the locking rod includes a locking limiting portion, the second through hole is provided as a stepped hole, and the locking rod is limited by the stepped hole and the locking limiting portion when moving towards the outside.

[0022] Another aspect of the present application, preferably, the locking rod includes a locking spring, the locking spring is arranged between the locking limiting portion and the connecting surface of the first limiting block, and the locking rod is given a resisting force by the locking spring when reaching the locking slot.

[0023] (Three) beneficial effects

[0024] The above technical scheme of the present application has the following beneficial technical effects:

[0025] The present application adopts the cooperation structure of the fixed mounting frame and the limiting assembly, so that the lightning arrester body can be conveniently and quickly installed and disassembled, and the operation and maintenance efficiency is significantly improved. The limiting component gradually enters the limiting state through the rotating extrusion mode, so that the lightning arrester can realize automatic guiding and positioning during installation, and the manual operation error is reduced. The locking component further fixes the limiting state through the clamping mode, so that the loosening between the limiting blocks is avoided, and the connection reliability and stability of the lightning arrester under high pressure working condition are ensured. Through the double effects of limiting and locking, the present application not only improves the anti-shock and anti-vibration performance of the lightning arrester, but also realizes the structure simplification and operation convenience while ensuring the safety, and is suitable for popularization and application in power equipment maintenance and emergency replacement. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure schematic diagram of one embodiment of the present application;

[0027] Figure 2 is the overall structure side view of one embodiment of the present application;

[0028] Figure 3 is the overall structure explosion view of one embodiment of the present application;

[0029] Figure 4is a fixed mounting rack and a first limiting block structure schematic diagram of one embodiment of the present application;

[0030] Figure 5 is a limiting assembly structure schematic diagram of one embodiment of the present application;

[0031] Figure 6 is a clamping member schematic diagram of one embodiment of the present application;

[0032] Reference signs:

[0033] 1: fixed mounting rack,

[0034] 2: limiting assembly, 210: first limiting block, 211: protruding block, 220: second limiting block, 221: limiting groove,

[0035] 230: limiting component, 231: sliding block, 232: transition structure, 233: sliding block limiting groove,

[0036] 240: locking component, 241: locking rod, 242: locking groove, 243: locking spring, 244: locking limiting part,

[0037] 250: clamping body. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application is further described in detail below with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0039] In the drawings, structure schematic diagrams according to embodiments of the present application are shown. These drawings are not drawn to scale, in which certain details are exaggerated for the purpose of clarity and certain details can be omitted. The shapes of various regions, layers shown in the drawings and their relative sizes, positional relationships are only exemplary, and in actuality, there can be deviations due to manufacturing tolerances or technical limitations, and a person skilled in the art can additionally design regions / layers with different shapes, sizes, relative positions according to actual needs.

[0040] Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts are within the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.

[0043] The application will be described in more detail below with reference to the accompanying drawings. Like elements are denoted by like reference numerals in the various drawings. Various parts in the drawings are not drawn to scale for the sake of clarity.

[0044] Example one

[0045] A power high-voltage arrester fast connecting device, Figure 1 The overall structure of an embodiment of the application is shown in a schematic view; Figure 2 The overall structure of an embodiment of the application is shown in a side view; Figure 3 The overall structure of an embodiment of the application is shown in an exploded view; as Figure 1 、 Figure 2 and Figure 3 The overall structure of an embodiment of the application is shown in an exploded view; as

[0046] The fixed mounting frame 1 is provided with a first through hole; the fixed mounting frame 1 can be made of a metal material and has sufficient strength and rigidity to withstand external forces generated by electromagnetic force, wind load or mechanical vibration during operation of the arrester. The fixed mounting frame 1 is provided with a first through hole for mounting and positioning the first limiting block 210, so that it can be stably assembled on the fixed mounting frame 1.

[0047] The limiting assembly 2 includes a first limiting block 210, a second limiting block 220 and a clamping member, the first limiting block 210 is connected with the fixed mounting frame 1 through the first through hole, one end of the second limiting block 220 is connected with the arrester body, and the second limiting block 220 is clamped with the first limiting block 210 through the clamping member, so that the arrester body is connected with the fixed mounting frame 1; the limiting assembly 2 is used to realize the quick installation and locking between the arrester body and the fixed mounting frame 1. The limiting assembly 2 includes a first limiting block 210, a second limiting block 220 and a clamping member. The first limiting block 210 is connected with the fixed mounting frame 1 through the first through hole, and plays a guiding and force bearing role during installation. One end of the second limiting block 220 is connected with the arrester body, which can be fixed by welding, bolting or sleeving, so as to realize the integrated connection of the arrester body and the limiting assembly 2. The second limiting block 220 is clamped with the first limiting block 210 through the clamping member, so as to realize the quick connection and disassembly between the arrester body and the fixed mounting frame 1.

[0048] The clamping member includes a limiting component 230 and a locking component 240;

[0049] The limiting part 230 is extruded with the first limiting block 210 by rotating, so that the first limiting block 210 and the second limiting block 220 form a limiting state, and the locking part 240 locks the first limiting block 210 and the second limiting block 220 by clamping, so that the limiting state is maintained. The function of the limiting part 230 is to generate extrusion by rotating operation, so that the first limiting block 210 and the second limiting block 220 gradually enter the limiting state. In this process, the contact surface of the limiting part 230 and the first limiting block 210 is designed as a transition structure, which can realize the shallow-to-deep guidance, so that the limiting process is more stable and the jamming is avoided. Through the rotation of the limiting part 230, the relative position of the first limiting block 210 and the second limiting block 220 can be limited, so as to ensure that the lightning arrester body is installed in place. The locking part 240 is used to maintain the limiting state formed, which is realized by a clamping structure. The clamping structure can provide stable mechanical locking effect, so as to prevent the first limiting block 210 and the second limiting block 220 from loosening or falling off under the action of external force. Through the action of the locking part 240, it can ensure that the lightning arrester can maintain a reliable installation state for a long time in a high-voltage operating environment, avoid accidental falling caused by vibration, impact or other external forces, and improve the safety and reliability of the overall device.

[0050] Figure 4 The fixed mounting frame and the first limiting block structure of one embodiment of the application are shown in the schematic view, Figure 4 As shown, further, in the embodiment, the first limiting block 210 is internally provided with a first cavity with one end open, and the horizontal cross section of the first cavity is circular. The first limiting block 210 is internally provided with a first cavity with one end open, which is used to accommodate the clamping member. Preferably, the horizontal cross section of the first cavity is circular structure, which is convenient for processing and forming, and can realize good coaxiality during assembly, so as to ensure the stability and uniformity of force.

[0051] The clamping member includes a clamping body 250, and the outer peripheral wall of the clamping body 250 is matched with the inner peripheral wall of the first limiting block 210.

[0052] The clamping member includes a clamping body 250, and the outer peripheral wall of the clamping body 250 is matched with the inner peripheral wall of the first limiting block 210.

[0053] The inner circumferential wall of the clamping body 250 is matched with the outer circumferential wall of the second limiting block 220, and the relative rotation is limited. The second limiting block 220 is designed as an outer shape structure consistent with the shape of the inner cavity of the clamping body 250, so that it can be inserted into the clamping body 250 and coaxially positioned by tight fit. In order to avoid the rotation of the second limiting block 220 after installation is completed, the anti-rotation structure such as octagonal structure is preferably designed between the inner circumferential wall of the clamping body 250 and the outer circumferential wall of the second limiting block 220, or the longitudinal groove is arranged on the inner circumferential wall of the clamping body 250, and the convex rib matched with the groove is arranged on the outer circumferential wall of the second limiting block 220, when the second limiting block 220 is inserted into the clamping body 250, the convex rib enters the groove, thereby limiting the relative rotation.

[0054] Figure 5 The structure diagram of the limiting assembly of one embodiment of the application is shown, Figure 6 The schematic diagram of the clamping member of one embodiment of the application is shown, as Figure 5 And Figure 6 As shown, further, in the embodiment, the inner circumferential wall of the first limiting block 210 is provided with the convex block 211, the limiting component 230 includes the sliding block 231, and the second limiting block 220 is provided with the limiting groove 221; when the clamping body 250 rotates with the second limiting block 220, the sliding block 231 is extruded with the convex block 211, so that the sliding block 231 slides into the limiting groove 221, and the limiting state is formed. The limiting component 230 is used for interacting with the limiting component 230 to realize the limiting function. The limiting component 230 includes the sliding block 231 arranged on the clamping body 250, and the limiting groove 221 is arranged on the second limiting block 220. After assembly is completed, the clamping body 250 and the second limiting block 220 can rotate relative to the first limiting block 210 as an integral structure. In the rotating process, the sliding block 231 is in contact with the convex block 211 and is extruded under the driving of the clamping body 250, with the increase of the rotation angle, the sliding block 231 is gradually forced to move in the radial direction, and finally enters the limiting groove 221 on the second limiting block 220, so that the limiting state is realized.

[0055] The end of the slider 231 in contact with the protrusion 211 is provided with a transition structure 232. The transition structure 232 gradually increases in length from the initial section to the terminal section, so that the slider 231 gradually slides into the limiting groove 221 during rotation, and cooperates with the limiting groove 221 after sliding in, to limit the relative position of the first limiting block 210 and the second limiting block 220, thereby forming a limiting state. In order to ensure that the slider 231 can smoothly enter the limiting groove 221, and avoid jamming or damage due to sudden stress, the end of the slider 231 in contact with the protrusion 211 is provided with a transition structure 232. Preferably, the transition structure 232 gradually increases in length from the initial section to the terminal section, and can be in the form of a slope, a curved surface, or a multi-step gradual change structure. Through this gradual increase in length design, the slider 231 can smoothly transition when in contact with the protrusion 211, and the stress gradually increases, so that the slider 231 is gradually pressed into the limiting groove 221 under the rotation drive. The protrusion 211 can be provided in the form of an arc structure.

[0056] Further, in the embodiment, the slider 231 is provided with a slider limiting groove 233, the slider 231 is connected with the clamping body 250 through the slider limiting groove 233, and the slider 231 moves relative to the clamping body 250 through the slider limiting groove 233. The slider 231 and the clamping body 250 are movably connected. Specifically, the slider 231 is clamped with the clamping body 250 through the slider limiting groove 233, so that the slider 231 can move on the clamping body 250 within a limited range along the radial direction of the clamping body 250.

[0057] Further, in the embodiment, the locking component 240 includes a locking rod 241 and a locking groove 242. The locking groove 242 is arranged on the clamping body 250. The first limiting block 210 is provided with a second through hole, and the locking rod 241 passes through the second through hole and is clamped with the locking groove 242. The locking groove 242 is arranged on the clamping body 250, and is used to form an insertion and clamping cooperation with the locking rod 241. The first limiting block 210 is provided with a second through hole, which is used to provide an insertion channel for the locking rod 241, so that the locking rod 241 can pass through the first limiting block 210 and enter the clamping body 250 to cooperate with the locking groove 242, thereby achieving the locking of the first limiting block 210 and the second limiting block 220.

[0058] The locking grooves 242 are provided in two, one locking groove 242 corresponds to the relaxed state of the first limiting block 210 and the second limiting block 220, and the other locking groove 242 corresponds to the limiting state of the first limiting block 210 and the second limiting block 220. The locking grooves 242 are provided in two, respectively corresponding to two different working states of the device. One locking groove 242 is used to correspond to the relaxed state, in which state, the first limiting block 210 and the second limiting block 220 do not form effective limiting between them, in a relatively movable or rotatable state, facilitating the installation and disassembly of the arrester body. Another locking groove 242 is used to correspond to the limiting state, in which state, the sliding block 231 has entered the limiting groove 221 and completed the limiting function, at this time, the locking rod 241 is inserted and clamped in the corresponding locking groove 242, so that the first limiting block 210 and the second limiting block 220 remain fixed, thereby forming a stable and reliable limiting and locking state.

[0059] The locking rod 241 can be inserted into different locking grooves 242 as needed during operation to realize the switching between the relaxed state and the limiting state. This structure not only simplifies the operation steps, but also enables the device to quickly enter or exit the working state, and can provide reliable mechanical locking in the limiting state to avoid loosening due to external vibration, impact or complex stress under power operation conditions.

[0060] Further, in the embodiment, the locking rod 241 includes a locking limiting portion 244 and a locking spring 243, the locking spring 243 is arranged between the locking limiting portion 244 and the connecting surface of the first limiting block 210, the second through hole is provided as a stepped hole, when the locking rod 241 moves towards the outside, it is limited by the stepped hole and the locking limiting portion 244, when the locking rod 241 reaches the locking groove, the locking spring 243 gives the locking rod 241 a resisting force. The second through hole is processed as a stepped hole structure, during the movement of the locking rod 241 in the outward direction, the stepped hole and the locking limiting portion 244 form a double limiting action, which can effectively prevent the locking rod 241 from accidentally coming out due to external force or vibration. At the same time, the locking spring 243 is arranged between the locking limiting portion 244 and the connecting surface of the first limiting block 210, which can provide a continuous elastic pushing force when the locking rod 241 enters the locking groove position, so that the locking rod 241 remains in a reliable resisting state.

[0061] The lightning arrester body can be conveniently and quickly installed and dismounted by cooperation of the fixed mounting frame and the limiting assembly, and the operation and maintenance efficiency is remarkably improved. The first limiting block and the second limiting block gradually enter the limiting state by the rotary extrusion of the limiting part, so that the automatic guiding and positioning of the lightning arrester during installation can be ensured, and the manual operation error is reduced. The locking part further fixes the limiting state by the clamping mode, so that the loosening between the limiting blocks is avoided, and the connection reliability and stability of the lightning arrester under high-voltage working condition are ensured. By the double effects of limiting and locking, the anti-vibration and anti-vibration performance of the lightning arrester is improved, the structure is simplified and the operation is convenient while the safety is ensured, and the application in the maintenance and emergency replacement of the power equipment is suitable.

[0062] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

[0063] In the above description, the technical details such as the patterning, etching, etc. of each layer are not described in detail. However, those skilled in the art should understand that the layers, regions, etc. with the required shape can be formed by various means in the prior art. In addition, those skilled in the art can also design methods that are not exactly the same as the methods described above in order to form the same structure.

[0064] The present application has been described above with reference to embodiments thereof. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present application. The scope of the present application is defined by the appended claims and their equivalents. Those skilled in the art can make various substitutions and modifications without departing from the scope of the present application, and such substitutions and modifications shall fall within the scope of the present application.

[0065] Although the embodiments of the present application have been described in detail, it should be understood that various changes, substitutions and modifications can be made to the embodiments of the present application without departing from the spirit and scope of the present application.

[0066] Obviously, the above embodiments are only examples for clarity and are not a limitation on the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments need not and cannot be exhaustively enumerated. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A fast connection device for a power high voltage arrester, characterized in that, The utility model relates to a lightning arrester fixing device, including: Fixed mounting bracket (1) and limiting component (2); The fixed mounting bracket (1) sets up first through -hole; The limiting component (2) includes first limiting block (210), second limiting block (220) and clamping member, first limiting block (210) is connected with fixed mounting bracket (1) through first through -hole, one end of second limiting block (220) is connected with lightning arrester body, and second limiting block (220) is clamped with first limiting block (210) through clamping member, so that lightning arrester body is connected with fixed mounting bracket (1); The clamping member includes limiting part (230) and locking part (240); The limiting part (230) is extruded with first limiting block (210) through rotation, so that first limiting block (210) forms the limiting state with second limiting block (220), and the locking part (240) is locked with first limiting block (210) and second limiting block (220) through clamping, and the limiting state is kept; The first limiting block (210) is internally provided with first cavity with one end opening, and the horizontal section of the first cavity is circular, The clamping member includes clamping body (250), and the outer peripheral wall of the clamping body (250) is matched with the inner peripheral wall of the first limiting block (210); The inner peripheral wall of the clamping body (250) is matched with the outer peripheral wall of the second limiting block (220), and relative rotation is limited; The inner peripheral wall of the first limiting block (210) is provided with a lug (211), the limiting part (230) includes a slider (231), and the second limiting block (220) is provided with a limiting groove (221);When the clamping body (250) rotates with the second limiting block (220), the slider (231) is extruded with the lug (211), so that the slider (231) slides into the limiting groove (221) and forms the limiting state; The end of the slider (231) in contact with the lug (211) is provided with a transition structure (232), and the transition structure (232) gradually increases in length from the initial segment to the terminal segment, so that the slider (231) gradually slides into the limiting groove (221) during rotation and cooperates with the limiting groove (221) after sliding, the relative position of the first limiting block (210) and the second limiting block (220) is limited, and the limiting state is formed.

2. The fast connection device for power high-voltage arresters according to claim 1, characterized in that, The slider (231) is provided with a slider limiting groove (233), and the slider (231) is connected with the clamping body (250) through the slider limiting groove (233), and the slider (231) moves relative to the clamping body (250) through the slider limiting groove (233).

3. The fast connection device for power high-voltage arresters according to claim 2, characterized in that, The lug (211) is provided in an arc structure.

4. The fast connection device for power high-voltage arresters according to claim 3, characterized in that, The locking component (240) comprises a locking rod (241) and a locking groove (242), the locking groove (242) is arranged on the clamping body (250), the first limiting block (210) is provided with a second through hole, the locking rod (241) passes through the second through hole and is clamped with the locking groove (242).

5. The fast connection device for power high-voltage arresters according to claim 4, characterized in that, The locking groove (242) is provided with two, one locking groove (242) corresponds to the release state of the first limiting block (210) and the second limiting block (220), and the other locking groove (242) corresponds to the limiting state of the first limiting block (210) and the second limiting block (220).

6. The fast connection device for power high-voltage arresters according to claim 5, characterized in that, The locking rod (241) comprises a locking limiting portion (244), the second through hole is provided with a stepped hole, and the locking rod (241) is limited by the stepped hole and the locking limiting portion (244) when moving towards the outside.

7. The fast connection device for power high voltage arresters according to claim 6, characterized in that, The locking rod (241) comprises a locking spring (243), the locking spring (243) is arranged between the locking limiting portion (244) and the connecting surface of the first limiting block (210), and the locking rod (241) is given a resisting force by the locking spring (243) when reaching the locking groove.

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