A lightning protection structure for a power transmission tower

Abstract

The utility model relates to lightning protection structure technical field, the utility model provides a lightning protection structure for transmission tower, including lightning arrester body still including mounting bracket, ground wire and positioning mechanism, mounting bracket sets up one side at lightning arrester body, is equipped with the mounting groove on mounting bracket, the groove bottom of mounting groove is equipped with the installation mouth, the bottom of lightning arrester body is adapted with mounting groove, wherein, the bottom of lightning arrester body stretches into mounting groove, ground wire installs at the bottom of lightning arrester body, ground wire penetrates installation mouth and carries out grounding treatment, positioning mechanism sets up between mounting bracket and lightning arrester body, is used to install and fix between mounting bracket and lightning arrester body, through above technical scheme, is used to solve the technical problem of low stability of lightning arrester installation on transmission tower in prior art.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection structure technology, specifically to a lightning protection structure for power transmission towers. Background Technology

[0002] With the continuous increase in power system voltage levels and the frequent occurrence of extreme weather, lightning protection for transmission towers is of paramount importance. Surge arresters, as key components in the lightning protection structure of transmission towers, can conduct lightning current and limit overvoltage during a lightning strike, playing a crucial role in protecting transmission lines and electrical equipment. However, the actual lightning protection effect of surge arresters depends not only on their own performance but also closely on their installation orientation.

[0003] Currently, the traditional method of installing surge arresters for power transmission towers is to fix them with multiple bolts. However, surge arresters are often exposed to wind and rain during use. In windy and rainy environments, bolts are prone to loosening due to vibration. Moreover, bolts are prone to corrosion in windy and rainy environments, which affects the fixing effect and thus affects the installation stability of the surge arrester. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a lightning protection structure for power transmission towers, which solves the technical problem of low installation stability of surge arresters on power transmission towers in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a lightning protection structure for power transmission towers, including a surge arrester body, a mounting bracket, a grounding wire, and a positioning mechanism. The mounting bracket is disposed on one side of the surge arrester body, and a mounting groove is formed on the mounting bracket. A mounting opening is formed at the bottom of the mounting groove. The bottom end of the surge arrester body is adapted to the mounting groove, wherein the bottom end of the surge arrester body extends into the mounting groove. The grounding wire is installed at the bottom end of the surge arrester body and passes through the mounting opening for grounding treatment. The positioning mechanism is disposed between the mounting bracket and the surge arrester body for fixing the mounting bracket and the surge arrester body in place.

[0006] Preferably, the positioning mechanism includes a positioning groove, a positioning block, and a limiting mechanism. The side wall of the surge arrester body is provided with a plurality of L-shaped positioning grooves. One end of the positioning groove penetrates the bottom side wall of the surge arrester body. The positioning block is fixedly disposed on the side wall of the mounting groove on one side of the positioning groove. The positioning block extends into the positioning groove. The limiting mechanism is disposed between the positioning block and the positioning groove to limit the distance between the positioning block and the positioning groove.

[0007] Furthermore, the limiting mechanism includes a first limiting groove, a second limiting groove, a threaded rod, and a first rotating mechanism. The first limiting groove is provided on the two opposite side walls of the positioning groove, and the second limiting groove is provided on the two opposite side walls of the positioning block. A limiting post is slidably provided in the second limiting groove along the axial direction of the second limiting groove. The threaded rod is rotatably disposed at the bottom of the second limiting groove and extends into the limiting post through threaded engagement. The first rotating mechanism is disposed in the positioning block and is used to drive the two threaded rods in the same positioning block to rotate synchronously.

[0008] Furthermore, the first rotating mechanism includes a first cavity, a second bevel gear, and a second rotating mechanism. The first cavity is formed within the positioning block. A first bevel gear is rotatably mounted on the side wall of the first cavity near the threaded rod. The first bevel gear is fixedly connected to the nearby threaded rod. The second bevel gear is rotatably mounted on the side wall of the first cavity and meshes with the first bevel gear. The second rotating mechanism is mounted on the mounting bracket and is used to drive the second bevel gear to rotate.

[0009] Furthermore, the second rotating mechanism includes a second cavity, a fourth bevel gear, and a third rotating mechanism. The mounting bracket has the second cavity opened on one side of the first cavity. The third bevel gear is rotatably mounted on the side wall of the second cavity. A drive rod is fixedly mounted between the third bevel gear and the second bevel gear. The fourth bevel gear is rotatably mounted on the inner bottom wall of the second cavity and meshes with the third bevel gear. The third rotating mechanism is mounted on the mounting bracket and is used to drive multiple fourth bevel gears to rotate synchronously.

[0010] Based on the above scheme, the third rotating mechanism includes a third cavity, a first gear ring, and a driving mechanism. The mounting frame has an annular third cavity. A first gear is rotatably arranged in the third cavity on one side of the fourth bevel gear. A first connecting rod is fixedly arranged between the first gear and the adjacent fourth bevel gear. The first gear ring is rotatably arranged in the third cavity and meshes with the first gear. The driving mechanism is arranged on the mounting frame and is used to drive one of the third bevel gears to rotate.

[0011] Based on the above scheme, the driving mechanism includes a driving groove and a second connecting rod. The driving groove is opened on the mounting bracket, and an internal hexagon bolt head is rotatably disposed in the driving groove. The second connecting rod is fixedly disposed between the internal hexagon bolt head and the adjacent third bevel gear.

[0012] Based on the above scheme, a sealing ring is fixedly provided on the side wall of the surge arrester body, and the sealing ring is in contact with the side wall of the mounting groove.

[0013] Based on the above scheme, the mounting bracket is provided with a threaded opening.

[0014] Based on the above scheme, an insulating rubber pad is fixedly installed on the side wall of the mounting groove.

[0015] The beneficial effects of the embodiments of this utility model are as follows:

[0016] 1. In this utility model, by setting the positioning block and the positioning groove, the positioning block can be inserted into the positioning groove during the process of inserting the surge arrester body into the mounting groove. Then, the operator rotates the surge arrester body so that the positioning block is fully inserted into the positioning groove, thereby facilitating the installation and fixing between the mounting bracket and the surge arrester body through the cooperation of the positioning block and the positioning groove.

[0017] 2. In this utility model, by setting up a limiting mechanism, an internal hex wrench can be used to tighten the internal hex bolt, thereby driving multiple limiting posts to move through the rotation of the internal hex bolt. This allows one end of the limiting post to extend into the first limiting groove, and the limiting post, in cooperation with the first and second limiting grooves respectively, achieves the limiting of the positioning block and the positioning groove, thereby preventing the positioning block from coming out of the positioning groove, thus improving the installation stability between the surge arrester body and the mounting bracket. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of a lightning protection structure for a power transmission tower in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 The embodiment shows an exploded structural diagram of the mounting bracket and the surge arrester body;

[0021] Figure 3 for Figure 1 A cross-sectional structural diagram of the mounting bracket in the embodiment;

[0022] Figure 4 for Figure 1 A cross-sectional structural schematic diagram of the limiting mechanism in the embodiment;

[0023] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0024] In the diagram: 1. Surge arrester body; 2. Mounting bracket; 3. Mounting slot; 4. Mounting port; 5. Grounding wire; 6. Positioning slot; 7. Positioning block; 8. First limiting slot; 9. Second limiting slot; 10. Threaded rod; 11. First cavity; 12. First bevel gear; 13. Second bevel gear; 14. Second cavity; 15. Third bevel gear; 16. Fourth bevel gear; 17. Third cavity; 18. First gear; 19. First gear ring; 20. Hex socket head cap screw head; 21. Second connecting rod; 22. Threaded port; 23. Limiting post. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0026] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-5 As shown, this invention illustrates a lightning protection structure for a power transmission tower according to one embodiment of the present invention. The structure includes a surge arrester body 1, a mounting frame 2, a grounding wire 5, and a positioning mechanism. The mounting frame 2 is disposed on one side of the surge arrester body 1, and has a mounting groove 3. A mounting opening 4 is provided at the bottom of the mounting groove 3. The bottom end of the surge arrester body 1 is adapted to the mounting groove 3, with the bottom end of the surge arrester body 1 extending into the mounting groove 3. The grounding wire 5 is installed at the bottom end of the surge arrester body 1 and passes through the mounting opening 4 for grounding. The positioning mechanism is disposed between the mounting frame 2 and the surge arrester body 1 for fixing the mounting frame 2 and the surge arrester body 1 together. A sealing ring is fixedly provided on the side wall of the surge arrester body 1, and the sealing ring contacts the side wall of the mounting groove 3. A threaded opening 22 is provided on the mounting frame 2, and an insulating film is fixedly provided on the side wall of the mounting groove 3.

[0032] Reference Figures 1-3The positioning mechanism includes a positioning groove 6, a positioning block 7, and a limiting mechanism. Multiple L-shaped positioning grooves 6 are provided on the side wall of the surge arrester body 1. One end of each positioning groove 6 penetrates the bottom side wall of the surge arrester body 1. A positioning block 7 is fixedly installed on one side of the mounting groove 6 on the side wall of the mounting groove 3. The positioning block 7 extends into the positioning groove 6. The limiting mechanism is located between the positioning block 7 and the positioning groove 6 to limit the movement between them. Specifically, during the process of extending the surge arrester body 1 into the mounting groove 3, the positioning block 7 can extend into the positioning groove 6. Then, the operator rotates the surge arrester body 1 to fully extend the positioning block 7 into the positioning groove 6, thus facilitating the installation and fixing of the mounting bracket 2 and the surge arrester body 1 through the cooperation of the positioning block 7 and the positioning groove 6.

[0033] Reference Figures 3-5The limiting mechanism includes a first limiting groove 8, a second limiting groove 9, a threaded rod 10, and a first rotating mechanism. The positioning groove 6 has two opposite side walls with first limiting grooves 8, and the positioning block 7 has two opposite side walls with second limiting grooves 9. A limiting post 23 is slidably disposed within the second limiting groove 9 along its axial direction. The threaded rod 10 is rotatably disposed at the bottom of the second limiting groove 9, and extends into the limiting post 23 via threaded engagement. The first rotating mechanism is disposed within the positioning block 7 and is used to drive the two threaded rods 10 within the same positioning block 7 to rotate synchronously. The first rotating mechanism includes a first limiting groove 8, a second limiting groove 9, a threaded rod 10, and a first rotating mechanism. The system comprises a cavity 11, a second bevel gear 13, and a second rotating mechanism. The first cavity 11 is located within the positioning block 7. A first bevel gear 12 is rotatably mounted on the side wall of the first cavity 11 near the threaded rod 10. The first bevel gear 12 is fixedly connected to the nearby threaded rod 10. The second bevel gear 13 is rotatably mounted on the side wall of the first cavity 11 and meshes with the first bevel gear 12. The second rotating mechanism is mounted on the mounting bracket 2 and is used to drive the second bevel gear 13 to rotate. The second rotating mechanism includes a second cavity 14, a fourth bevel gear 16, and a third rotating mechanism. The mounting bracket 2 is located within the first cavity 11. A second cavity 14 is formed on one side of cavity 11. A third bevel gear 15 is rotatably mounted on the side wall of the second cavity 14. A drive rod is fixed between the third bevel gear 15 and the second bevel gear 13. A fourth bevel gear 16 is rotatably mounted on the inner bottom wall of the second cavity 14 and meshes with the third bevel gear 15. A third rotating mechanism is mounted on the mounting bracket 2 and is used to drive multiple fourth bevel gears 16 to rotate synchronously. Specifically, the operation of the third rotating mechanism can drive multiple fourth bevel gears 16 to rotate synchronously, and at the same time, through the interaction between the fourth bevel gear 16 and the third bevel gear 15... The meshing drives the third bevel gear 15 and the second bevel gear 13 to rotate. The meshing of the second bevel gear 13 with the first bevel gear 12 drives the first bevel gear 12 and the threaded rod 10 to rotate. The threaded engagement between the threaded rod 10 and the limiting post 23 causes one end of the limiting post 23 to extend into the first limiting groove 8. The engagement of the limiting post 23 with the first limiting groove 8 and the second limiting groove 9 respectively achieves the limitation between the positioning block 7 and the positioning groove 6, thereby preventing the positioning block 7 from coming out of the positioning groove 6 and improving the installation stability between the surge arrester body 1 and the mounting bracket 2.

[0034] Reference Figures 3-5The third rotating mechanism includes a third cavity 17, a first gear ring 19, and a drive mechanism. The mounting frame 2 has an annular third cavity 17. A first gear 18 is rotatably mounted within the third cavity 17, located on one side of the fourth bevel gear 16. A first connecting rod is fixedly mounted between the first gear 18 and the adjacent fourth bevel gear 16. The first gear ring 19 is rotatably mounted within the third cavity 17 and meshes with the first gear 18. The drive mechanism is mounted on the mounting frame 2 and is used to drive one of the third bevel gears 15 to rotate. The drive mechanism includes a drive groove and a second connecting rod 21. The drive groove is... The mounting bracket 2 has an internal hexagonal bolt head 20 rotatably mounted in the drive slot. The second connecting rod 21 is fixedly mounted between the internal hexagonal bolt head 20 and the adjacent third bevel gear 15. Specifically, an internal hexagonal bolt can be tightened using an internal hexagonal wrench, thereby driving the third bevel gear 15 to rotate. At the same time, the meshing of the third bevel gear 15 with the fourth bevel gear 16 drives the adjacent first gear 18 to rotate. Thus, the meshing of the first gear 18 with the first gear ring 19 drives multiple fourth bevel gears 16 and multiple first gears 18 to rotate synchronously.

[0035] In this embodiment, during use, when the operator inserts the surge arrester body 1 into the mounting groove 3, the positioning block 7 can be inserted into the positioning groove 6. Then, the operator rotates the surge arrester body 1 so that the positioning block 7 is fully inserted into the positioning groove 6. This facilitates the installation and fixation of the mounting bracket 2 and the surge arrester body 1 through the cooperation of the positioning block 7 and the positioning groove 6. Afterwards, the operator can use an Allen wrench to tighten the Allen bolts, thereby rotating the third bevel gear 15. Simultaneously, the meshing of the third bevel gear 15 and the fourth bevel gear 16 drives the adjacent first gear 18 to rotate. Thus, the meshing of the first gear 18 and the first gear ring 19 drives multiple fourth bevel gears. The wheel 16 and multiple first gears 18 rotate synchronously. At the same time, the meshing of the fourth bevel gear 16 with the third bevel gear 15 drives the third bevel gear 15 and the second bevel gear 13 to rotate. Thus, the meshing of the second bevel gear 13 with the first bevel gear 12 drives the first bevel gear 12 and the threaded rod 10 to rotate. Thus, the threaded engagement between the threaded rod 10 and the limiting post 23 drives one end of the limiting post 23 to extend into the first limiting groove 8. Then, the engagement of the limiting post 23 with the first limiting groove 8 and the second limiting groove 9 respectively achieves the limitation between the positioning block 7 and the positioning groove 6, thereby preventing the positioning block 7 from coming out of the positioning groove 6, thus improving the installation stability between the surge arrester body 1 and the mounting bracket 2.

[0036] 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 lightning protection structure for power transmission towers, comprising a surge arrester body (1), characterized in that, Also includes: Mounting bracket (2), the mounting bracket (2) is located on one side of the surge arrester body (1), the mounting bracket (2) has a mounting groove (3), the bottom of the mounting groove (3) has a mounting opening (4), and the bottom end of the surge arrester body (1) is adapted to the mounting groove (3). The bottom end of the surge arrester body (1) extends into the mounting groove (3); Grounding wire (5), the grounding wire (5) is installed at the bottom end of the surge arrester body (1), and the grounding wire (5) passes through the mounting port (4) for grounding treatment; A positioning mechanism is provided between the mounting bracket (2) and the surge arrester body (1) for fixing the mounting bracket (2) and the surge arrester body (1).

2. The lightning protection structure for power transmission towers according to claim 1, characterized in that, The positioning mechanism includes: Positioning groove (6): The side wall of the surge arrester body (1) is provided with a plurality of L-shaped positioning grooves (6), one end of the positioning groove (6) penetrates the bottom side wall of the surge arrester body (1). The positioning block (7) is fixedly provided on one side of the mounting groove (6) on the side wall of the mounting groove (3), wherein the positioning block (7) extends into the positioning groove (6); A limiting mechanism is provided between the positioning block (7) and the positioning groove (6) for limiting the distance between the positioning block (7) and the positioning groove (6).

3. The lightning protection structure for power transmission towers according to claim 2, characterized in that, The limiting mechanism includes: The first limiting groove (8) is provided on both of the two side walls opposite to the positioning groove (6); The second limiting groove (9) is provided on both of the two opposite side walls of the positioning block (7), and a limiting post (23) is slidably provided in the second limiting groove (9) along the axial direction of the second limiting groove (9). A threaded rod (10) is rotatably disposed at the bottom of the second limiting groove (9), and the threaded rod (10) extends into the limiting post (23) through threaded engagement; The first rotating mechanism is disposed in the positioning block (7) and is used to drive the two threaded rods (10) in the same positioning block (7) to rotate synchronously.

4. The lightning protection structure for power transmission towers according to claim 3, characterized in that, The first rotating mechanism includes: The first cavity (11) is opened in the positioning block (7). A first bevel gear (12) is rotatably provided on the side wall of the first cavity (11) near the threaded rod (10). The first bevel gear (12) is fixedly connected to the nearby threaded rod (10). The second bevel gear (13) is rotatably disposed on the side wall of the first cavity (11), and the second bevel gear (13) meshes with the first bevel gear (12); The second rotating mechanism is mounted on the mounting bracket (2) and is used to drive the second bevel gear (13) to rotate.

5. A lightning protection structure for power transmission towers according to claim 4, characterized in that, The second rotating mechanism includes: The second cavity (14) is provided on one side of the first cavity (11) by the mounting bracket (2). A third bevel gear (15) is rotatably provided on the side wall of the second cavity (14). A drive rod is fixedly provided between the third bevel gear (15) and the second bevel gear (13). The fourth bevel gear (16) is rotatably disposed on the inner bottom wall of the second cavity (14), and the fourth bevel gear (16) meshes with the third bevel gear (15); The third rotating mechanism is mounted on the mounting frame (2) and is used to drive the multiple fourth bevel gears (16) to rotate synchronously.

6. The lightning protection structure for power transmission towers according to claim 5, characterized in that, The third rotating mechanism includes: The third cavity (17) is provided in the mounting bracket (2) with an annular third cavity (17). A first gear (18) is rotatably arranged in the third cavity (17) on one side of the fourth bevel gear (16). A first connecting rod is fixedly arranged between the first gear (18) and the adjacent fourth bevel gear (16). The first gear ring (19) is rotatably disposed in the third cavity (17) and meshes with the first gear (18); A drive mechanism is provided on the mounting bracket (2) for driving one of the third bevel gears (15) to rotate.

7. A lightning protection structure for power transmission towers according to claim 6, characterized in that, The drive mechanism includes: A drive slot is provided on the mounting bracket (2), and an internal hexagonal bolt head (20) is rotatably provided in the drive slot. The second connecting rod (21) is fixedly disposed between the internal hex bolt head (20) and the adjacent third bevel gear (15).

8. A lightning protection structure for power transmission towers according to claim 7, characterized in that, A sealing ring is fixedly provided on the side wall of the surge arrester body (1), and the sealing ring is in contact with the side wall of the mounting groove (3).

9. A lightning protection structure for power transmission towers according to claim 8, characterized in that, The mounting bracket (2) has a threaded opening (22).

10. A lightning protection structure for power transmission towers according to claim 9, characterized in that, An insulating rubber pad is fixedly installed on the side wall of the mounting groove (3).

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