Quick replacement device for lightning arrester

Abstract

The utility model provides a quick replacement device for a lightning arrester, which belongs to the technical field of overvoltage protection resistors, and comprises a bearing mechanism, a clamping mechanism, a first clamping mechanism, a second clamping mechanism, a third clamping mechanism, a fourth clamping mechanism and a fourth clamping mechanism, and the positioning mechanism comprises a shell fixedly mounted at the top of the transverse plate. According to the utility model, the positioning mechanism adopts a one-key buckle structure to realize quick disassembly and assembly, and the automatic locking function of the reset spring is matched, so that the replacement time is greatly shortened; due to the secondary reinforcing design of the screw holes, the installation stability is guaranteed, and the tedious operation of traditional multi-bolt fixing is avoided; a multi-fixing system of the spring damper and the connecting assembly ensures safe operation under the condition of no power failure; the lightning arrester replacement device is suitable for emergency repair in thunderstorm seasons, the safety and stability of power grid operation are remarkably improved, meanwhile, manpower requirements are reduced, high efficiency, safety and standardization of lightning arrester replacement operation are achieved, and the problems that a traditional lightning arrester replacement process is tedious, time-consuming and labor-consuming are effectively solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of overvoltage protection resistors, specifically relating to a quick replacement device for surge arresters. Background Technology

[0002] A surge arrester is an electrical device used to protect power systems and electrical equipment from damage caused by lightning overvoltages or switching overvoltages. It is typically installed near transmission lines, substations, and electrical equipment. Its working principle is based on nonlinear resistance characteristics. Under normal voltage, it presents a high impedance state, conducting almost no current; however, when an overvoltage occurs in the system, the impedance rapidly decreases, discharging the overvoltage energy to ground, thereby limiting the voltage amplitude. Modern surge arresters are mainly classified into valve-type and metal oxide types, among which metal oxide surge arresters (MOAs) are widely used due to their stable performance.

[0003] Currently, the replacement of surge arresters is complicated and cannot be done quickly. When the equipment is aging or malfunctioning, the replacement process requires more manpower, time, and complex operating procedures. Maintenance personnel must perform power outages and disassemble bolts, wires, and other fixing structures, which not only prolongs the system recovery time but may also affect the stability of the power grid. In addition, during the rainy season or in case of emergency failure, the low replacement efficiency may lead to a prolonged protection gap, exposing power equipment to overvoltage threats and increasing system safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a quick replacement device for surge arresters, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quick-change device for a surge arrester includes,

[0007] The load-bearing mechanism includes a horizontal plate and a support arm fixedly installed on the outside of the horizontal plate;

[0008] The positioning mechanism includes a housing fixedly installed on the top of the horizontal plate, a groove formed on the outside of the housing, a support plate fixedly installed in the inner cavity of the groove, and a return spring fixedly installed on the outside of the support plate for continuously providing positioning pressure.

[0009] And an overvoltage protection mechanism for achieving lightning protection.

[0010] As a preferred embodiment of the present invention, the positioning mechanism further includes a shaft hinged to the inner cavity of the housing, a positioning protrusion fixedly installed on the outside of the shaft, a through hole opened on the positioning protrusion and close to the reset spring, and a pressure rod fixedly installed on the outside of the positioning protrusion for manual force application.

[0011] As a preferred embodiment of this utility model, the outer side of the positioning protrusion is designed with rounded corners, and one end of the reset spring extends into the inner cavity of the through hole and is fixedly connected to the inner wall of the through hole.

[0012] As a preferred embodiment of this utility model, the overvoltage protection mechanism includes a cylinder, an insulating cylinder fixedly installed on the top of the cylinder, a terminal fixedly installed on the top of the insulating cylinder, and a locking assembly disposed on the outside of the cylinder.

[0013] As a preferred embodiment of this utility model, the locking assembly includes a rectangular block fixedly installed on the outside of the cylinder, a screw hole opened on the top of the rectangular block, a fixing block fixedly installed on the outside of the rectangular block, and an arc-shaped groove opened on the outside of the fixing block. The rectangular block is movably locked in the inner cavity of the housing, and the positioning protrusion is movably locked in the inner cavity of the arc-shaped groove.

[0014] As a preferred embodiment of the present invention, the bearing mechanism further includes a spring damper fixedly installed at the bottom of the horizontal plate, a positioning hook fixedly installed at the bottom of the support arm, and a connecting component disposed on the outside of the support arm for fixing with other connecting parts.

[0015] As a preferred embodiment of this utility model, the connecting assembly includes a fixing sleeve fixedly installed at the bottom of the support arm, a connecting piece fixedly installed on the outside of the fixing sleeve, a limiting cylinder fixedly installed in the inner cavity of the fixing sleeve, and a rope threading hole opened in the inner cavity of the limiting cylinder.

[0016] Compared with existing technologies, the advantages of this utility model are as follows: The positioning mechanism employs a one-click snap-fit ​​structure to achieve rapid disassembly and assembly, and the automatic locking function of the return spring significantly shortens the replacement time; the secondary reinforcement design of the screw holes ensures installation stability while avoiding the cumbersome operation of traditional multi-bolt fixing; the multiple fixing system of the spring damper and connecting components ensures safe operation even without power interruption; it is suitable for emergency repairs during the rainy season, significantly improving the safety and stability of power grid operation, while reducing manpower requirements, achieving high efficiency, safety, and standardization in surge arrester replacement operations, and effectively solving the problems of cumbersome, time-consuming, and labor-intensive traditional surge arrester replacement processes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the positioning mechanism structure of this utility model;

[0020] Figure 3 This is a partial cross-sectional schematic diagram of the overvoltage protection mechanism structure of this utility model during installation;

[0021] Figure 4 This is a partial cross-sectional view of the connecting component structure of this utility model.

[0022] In the picture:

[0023] 100. Load-bearing mechanism; 110. Horizontal plate; 120. Support arm; 130. Spring damper; 140. Positioning hook; 150. Connecting assembly; 151. Fixing sleeve; 152. Connecting piece; 153. Limiting cylinder; 154. Rope threading hole;

[0024] 200, Positioning mechanism; 210, Housing; 220, Groove; 230, Support plate; 240, Return spring; 250, Shaft; 260, Positioning protrusion; 270, Through hole; 280, Pressure rod;

[0025] 300. Overvoltage protection mechanism; 310. Cylinder body; 320. Insulating cylinder; 330. Terminal; 340. Locking assembly; 341. Rectangular block; 342. Screw hole; 343. Fixing block; 344. Arc groove. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example

[0030] Reference Figures 1-4 This is an embodiment of the present invention, which provides a quick-change device for a surge arrester, comprising:

[0031] The load-bearing mechanism 100 includes a horizontal plate 110 and a support arm 120 fixedly installed on the outside of the horizontal plate 110.

[0032] The positioning mechanism 200 includes a housing 210 fixedly installed on the top of the horizontal plate 110, a groove 220 opened on the outside of the housing 210, a support plate 230 fixedly installed in the inner cavity of the groove 220, and a return spring 240 fixedly installed on the outside of the support plate 230 for continuously providing positioning pressure.

[0033] And an overvoltage protection mechanism 300 for achieving lightning protection.

[0034] The cross plate 110 and support arm 120 of the bearing mechanism 100 provide stable support. At the same time, the housing 210, groove 220, support plate 230 and reset spring 240 of the positioning mechanism 200 enable the overvoltage protection mechanism 300 to be quickly positioned and fixed. The reset spring 240 continuously applies pressure to ensure stability after installation. The overall structure simplifies the cumbersome steps of replacing traditional surge arresters and improves operation efficiency.

[0035] Specifically, the positioning mechanism 200 also includes a shaft 250 hinged to the inner cavity of the housing 210, a positioning protrusion 260 fixedly installed on the outside of the shaft 250, a through hole 270 opened in the positioning protrusion 260 and close to the return spring 240, and a pressure rod 280 fixedly installed on the outside of the positioning protrusion 260 for manual force application. The outer side of the positioning protrusion 260 is designed with rounded corners, and one end of the return spring 240 extends into the inner cavity of the through hole 270 and is fixedly connected to the inner wall of the through hole 270.

[0036] The locking and unlocking of the positioning protrusion 260 is achieved through the cooperation of the shaft 250, the positioning protrusion 260, the through hole 270, and the pressure rod 280. When the pressure rod 280 is pressed, the return spring 240 retracts, causing the positioning protrusion 260 to disengage from the locked state, facilitating quick disassembly of the overvoltage protection mechanism 300, optimizing the manual operation process, reducing replacement time, and making it suitable for emergency maintenance scenarios. The rounded corner design of the positioning protrusion 260 makes it smoother during locking and unlocking, reducing mechanical wear. The return spring 240 is embedded in the through hole 270, enhancing positioning stability and preventing accidental loosening due to vibration or external force, ensuring reliable fixation of the surge arrester during long-term operation.

[0037] Furthermore, the overvoltage protection mechanism 300 includes a cylinder 310, an insulating cylinder 320 fixedly installed on the top of the cylinder 310, a terminal 330 fixedly installed on the top of the insulating cylinder 320, and a locking assembly 340 disposed on the outside of the cylinder 310.

[0038] Among them, the overvoltage protection mechanism 300 consists of a cylinder 310, an insulating cylinder 320, a terminal 330, and a locking component 340, which together form a complete lightning protection module. The locking component 340 works in conjunction with the positioning mechanism 200 to make the overall installation process more convenient. At the same time, the insulating cylinder 320 ensures electrical safety and meets the protection requirements under high voltage conditions.

[0039] Preferably, the locking assembly 340 includes a rectangular block 341 fixedly installed on the outside of the cylinder 310, a screw hole 342 opened on the top of the rectangular block 341, a fixing block 343 fixedly installed on the outside of the rectangular block 341, and an arc-shaped groove 344 opened on the outside of the fixing block 343. The rectangular block 341 is movably locked in the inner cavity of the housing 210, and the positioning protrusion 260 is movably locked in the inner cavity of the arc-shaped groove 344.

[0040] The rectangular block 341 can be directly inserted into the inner cavity of the housing 210 and quickly fixed by being engaged in the arc groove 344 by the positioning protrusion 260. The design of the screw hole 342 allows for subsequent reinforcement with a single bolt, further enhancing the connection strength. This structure realizes the installation logic of first clamping and then locking, which not only ensures the convenience of initial positioning but also enhances the stability of long-term operation.

[0041] Furthermore, the load-bearing mechanism 100 also includes a spring damper 130 fixedly installed at the bottom of the cross plate 110, a positioning hook 140 fixedly installed at the bottom of the support arm 120, and a connecting assembly 150 provided on the outside of the support arm 120 for fixing with other connecting parts.

[0042] Among them, the spring damper 130 can buffer external vibrations and reduce mechanical impact on the surge arrester; the positioning hook 140 and the connecting assembly 150 provide additional fixing points, enhancing the overall structure's resistance to wind sway and earthquakes, and are suitable for complex environments such as overhead lines.

[0043] Furthermore, the connecting assembly 150 includes a fixing sleeve 151 fixedly installed at the bottom of the support arm 120, a connecting piece 152 fixedly installed on the outside of the fixing sleeve 151, a limiting cylinder 153 fixedly installed in the inner cavity of the fixing sleeve 151, and a rope hole 154 opened in the inner cavity of the limiting cylinder 153.

[0044] The connecting component 150, consisting of a fixing sleeve 151, a connecting piece 152, a limiting sleeve 153, and a rope hole 154, forms a multi-level fixing system. It can be secured by bolts or by using ropes to pass through the rope hole 154 for auxiliary fixing, adapting to different installation scenarios and improving the versatility and reliability of the device.

[0045] In use, first, align the rectangular block 341 of the overvoltage protection mechanism 300 with the inner cavity of the housing 210 and insert it. At this time, the positioning protrusion 260 automatically engages with the arc-shaped groove 344 of the fixing block 343 under the action of the return spring 240 to complete the initial positioning. Then, a bolt is installed through the screw hole 342 to achieve secondary reinforcement. When replacement is required, press the pressure rod 280 to compress the return spring 240, and the positioning protrusion 260 will disengage from the arc-shaped groove 344 and can be quickly removed. During installation, repeat the above insertion and locking actions to complete the replacement. Throughout the process, the spring damper 130 absorbs vibration, and the connecting assembly 150 is fixed in multiple stages by bolts or ropes to ensure the stable operation of the device in complex environments such as high-voltage overhead lines.

[0046] In summary, the positioning mechanism 200 achieves rapid engagement and release through the cooperation of the reset spring 240 and the positioning protrusion 260, enabling the overvoltage protection mechanism 300 to be installed and disassembled with a single click. The insertion design of the rectangular block 341 and the housing 210, combined with the positioning structure of the arc groove 344, ensures both the convenience of initial installation and secondary reinforcement through the screw hole 342. The multi-level fixing system of the spring damper 130 and the connecting component 150 enhances vibration resistance and adaptability. The overall structure ensures electrical safety while significantly improving replacement efficiency, making it suitable for emergency maintenance and routine repairs of high-voltage lines.

[0047] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quick replacement device for a surge arrester, characterized by: include, The load-bearing mechanism (100) includes a horizontal plate (110) and a support arm (120) fixedly installed on the outside of the horizontal plate (110); The positioning mechanism (200) includes a housing (210) fixedly installed on the top of the cross plate (110), a groove (220) opened on the outside of the housing (210), a support plate (230) fixedly installed in the inner cavity of the groove (220), and a return spring (240) fixedly installed on the outside of the support plate (230) for continuously providing positioning pressure. And an overvoltage protection mechanism (300) for achieving lightning protection.

2. The fast replacement device for a surge arrester according to claim 1, characterized in that: The positioning mechanism (200) further includes a shaft (250) hinged to the inner cavity of the housing (210), a positioning protrusion (260) fixedly installed on the outside of the shaft (250), a through hole (270) opened on the positioning protrusion (260) and close to the return spring (240), and a pressure rod (280) fixedly installed on the outside of the positioning protrusion (260) for manual force application.

3. The fast replacement device for a surge arrester according to claim 2, characterized in that: The outer side of the positioning protrusion (260) is designed with rounded corners, and one end of the return spring (240) extends into the inner cavity of the through hole (270) and is fixedly connected to the inner wall of the through hole (270).

4. The fast replacement device for a surge arrester according to claim 3, characterized in that: The overvoltage protection mechanism (300) includes a cylinder (310), an insulating cylinder (320) fixedly installed on the top of the cylinder (310), a terminal (330) fixedly installed on the top of the insulating cylinder (320), and a locking assembly (340) disposed on the outside of the cylinder (310).

5. The fast replacement device for a surge arrester according to claim 4, characterized in that: The locking assembly (340) includes a rectangular block (341) fixedly installed on the outside of the cylinder (310), a screw hole (342) opened on the top of the rectangular block (341), a fixing block (343) fixedly installed on the outside of the rectangular block (341), and an arc-shaped groove (344) opened on the outside of the fixing block (343). The rectangular block (341) is movably locked in the inner cavity of the housing (210), and the positioning protrusion (260) is movably locked in the inner cavity of the arc-shaped groove (344).

6. The fast replacement device for a surge arrester according to claim 5, characterized in that: The bearing mechanism (100) further includes a spring damper (130) fixedly installed at the bottom of the cross plate (110), a positioning hook (140) fixedly installed at the bottom of the support arm (120), and a connecting assembly (150) disposed on the outside of the support arm (120) for fixing with other connecting parts.

7. The fast replacement device for a surge arrester according to claim 6, characterized in that: The connecting assembly (150) includes a fixing sleeve (151) fixedly installed at the bottom of the support arm (120), a connecting piece (152) fixedly installed on the outside of the fixing sleeve (151), a limiting cylinder (153) fixedly installed in the inner cavity of the fixing sleeve (151), and a rope hole (154) opened in the inner cavity of the limiting cylinder (153).

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