A falling arrester

Abstract

The application discloses a drop-type lightning arrester, relates to the technical field of drop-type lightning arresters, and comprises a lightning arrester body, the top of the lightning arrester body is provided with a wiring end, the bottom of the lightning arrester body is provided with a lower wiring column, the outer wall of the lower wiring column is mounted with a lower wiring seat, and the outer wall of the lower wiring column is threadedly connected with a mounting nut. When the lower wiring seat is installed and used with the aid of the mounting nut through the relative rotation of the positioning rod, in order to prevent the mounting nut from deviating after long-time use and affecting the daily use stability of the lightning arrester, the control box can be installed to the inner side wall of the mounting frame, and the connecting shaft is rotated, the connecting of the conical gear set drives the worm to rotate, the rotation of the worm drives the positioning rod to relatively reverse through the connection of the worm wheel, the positioning rod abuts against the mounting nut, and the stability of the mounting nut after long-time use is improved.

Description

Technical Field

[0001] This application relates to the field of drop-out surge arresters, and in particular to a drop-out surge arrester. Background Technology

[0002] A surge arrester is an electrical device used to protect electrical equipment from high transient overvoltage hazards during lightning strikes and to limit the duration or amplitude of follow current. Surge arresters are also called overvoltage protectors or overvoltage limiters. A drop-out surge arrester is a modified surge arrester installed on the drop-out mechanism of a drop-out fuse. This allows for convenient testing, maintenance, and replacement of the surge arrester using an insulated lever without interrupting power. This not only ensures the continuity of the line but also greatly reduces the workload and time required for power maintenance personnel. It is particularly suitable for locations where power outages are not advisable, such as communication facilities, airports, train stations, hospitals, and busy commercial areas.

[0003] In the daily installation and use of existing drop-out surge arresters, the lower terminal block is often connected with the help of the mounting nut. However, after being tightened, the mounting nut is often exposed, which does not provide a good fixation effect on the surface of the mounting nut. When the mounting nut is used in the external environment, it may strip or loosen, affecting the stability of the connection between the surge arrester and the lower terminal block and reducing the safety of the surge arrester. Utility Model Content

[0004] To address the aforementioned issues of insufficient contact and fixation between the mounting nut and the lower terminal block, which can lead to stripping or loosening of the nut during external use and affect the stability of the connection between the surge arrester and the lower terminal block, this application provides a drop-out surge arrester.

[0005] The present application provides a drop-out surge arrester with the following technical solution: it includes a surge arrester body, a terminal block is provided on the top of the surge arrester body, a lower terminal block is provided on the bottom of the surge arrester body, a lower terminal seat is installed on the outer wall of the lower terminal block, and an installation nut is threadedly connected to the outer wall of the lower terminal block;

[0006] The outer wall of the lower terminal block is provided with a positioning mechanism, which includes a worm gear and a positioning rod.

[0007] A mounting frame is fixedly connected to the outer wall of the lower terminal block. A control box is detachably connected to the outer wall of the mounting frame. A connecting shaft is rotatably connected to the inner wall of the control box. A bevel gear set is fixedly connected to the outer wall of the connecting shaft. A worm gear is fixedly connected to the outer wall of the bevel gear set. A worm wheel that is rotatably connected to the inner wall of the control box meshes with the outer wall of the worm gear. A positioning rod located on one side of the mounting nut is fixedly connected to the rotation center of the worm wheel through a rotating shaft.

[0008] By adopting the above technical solution, when installing and using the terminal block with the assistance of the mounting nut, in order to prevent the mounting nut from shifting during long-term use and affecting the daily stability of the surge arrester, the control box can be installed on the inner wall of the mounting frame, and the connecting shaft can be rotated. Through the connection of the bevel gear set, the worm gear is driven to rotate. The rotation of the worm gear, through the connection of the worm wheel, drives the positioning rod to rotate relative to each other, so that the positioning rod abuts against the mounting nut, thereby improving the stability of the mounting nut during long-term use.

[0009] Preferably, a limiting groove is provided at the connection between the outer wall of the control box and the positioning rod.

[0010] By adopting the above technical solution, the positioning rod can be easily limited and swung.

[0011] Preferably, the end of the positioning rod is bent at the contact point with the mounting nut, and two sets of positioning rods are provided, with the two sets of positioning rods rotating in opposite directions.

[0012] By adopting the above technical solution, the effect of fixing the mounting nut to both sides is improved.

[0013] Preferably, a connecting plate is fixedly connected to the top of the connecting shaft, a first nut is provided on the top of the connecting plate, a first bolt is threadedly connected to the inner wall of the first nut and slidably connected to the top of the control box, and a positioning groove is provided at the connection part between the top of the control box and the first bolt.

[0014] By adopting the above technical solution, the positioning rod can be locked in place after its angle swings.

[0015] Preferably, the positioning grooves are arranged in a ring about the rotation center of the connecting shaft.

[0016] By adopting the above technical solution, the positioning rod can be adjusted and fixed after rotating at different angles.

[0017] Preferably, the outer wall of the mounting frame is provided with a second nut, and the inner wall of the second nut is threaded with a second bolt that is slidably connected to the outer wall of the control box. The connection part between the outer wall of the control box and the second bolt is provided with a mounting groove.

[0018] By adopting the above technical solution, the control box can be easily snapped together and installed for use.

[0019] Preferably, the outer wall of the mounting frame has a U-shaped profile, and the inner wall of the mounting groove has an inner spiral at the connection point with the second bolt.

[0020] By adopting the above technical solution, the stability of the control box when it is snapped into place on the lower terminal block is improved.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. When installing the terminal block using the relative rotation of the positioning rod and the installation nut, in order to prevent the installation nut from shifting over a long period of use and affecting the daily stability of the surge arrester, the control box can be installed on the inner wall of the mounting frame. The connecting shaft is rotated, and through the connection of the bevel gear set, the worm gear is driven to rotate. The rotation of the worm gear, through the connection of the worm wheel, drives the positioning rod to rotate relative to the nut, so that the positioning rod abuts against the installation nut, thereby improving the stability of the installation nut under long-term use.

[0023] 2. By utilizing the distribution of the positioning grooves, when adjusting the angle of the positioning rod by rotating the connecting shaft, in order to improve the locking and fixing effect of the positioning rod after rotation, the first bolt is rotated and the first nut limits the first bolt so that the first bolt is inserted into the positioning groove, thereby improving the locking and fixing effect of the positioning rod after rotation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the overall structure of the punching device in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram illustrating the overall structure of the punching device from another direction, as shown in the embodiment of this application.

[0026] Figure 3 This is a schematic diagram illustrating the disassembled state of the control box, as shown in the embodiments of this application.

[0027] Figure 4 This is a schematic diagram illustrating the main distribution structure of the mounting nut positions in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram illustrating the connection structure between the worm and the worm wheel, which is a key feature of this application.

[0029] Figure 6 The embodiments of this application mainly embody Figure 4 A schematic diagram of the enlarged structure at point A in the diagram;

[0030] Figure 7 The embodiments of this application mainly embody Figure 5 A schematic diagram of the enlarged structure at point B in the diagram;

[0031] Reference numerals in the attached diagram: 1. Lightning arrester body; 2. Terminal block; 3. Lower terminal post; 4. Lower terminal block; 5. Mounting nut; 6. Mounting frame; 7. Control box; 8. Connecting shaft; 9. Bevel gear set; 10. Worm gear; 11. Worm wheel; 12. Positioning rod; 13. Limiting groove; 14. Connecting plate; 15. First nut; 16. First bolt; 17. Positioning groove; 18. Second nut; 19. Second bolt; 20. Mounting groove. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0033] This application discloses a drop-out surge arrester.

[0034] Reference Figure 1 , Figure 5 and Figure 6 A drop-out surge arrester includes a surge arrester body 1, a terminal block 2 is provided on the top of the surge arrester body 1, a lower terminal block 3 is provided on the bottom of the surge arrester body 1, a lower terminal block 4 is installed on the outer wall of the lower terminal block 3, and a mounting nut 5 is threadedly connected to the outer wall of the lower terminal block 3. The mounting nut 5 is used to connect and install the lower terminal block 4.

[0035] The outer wall of the lower terminal block 4 is provided with a positioning mechanism, which includes a worm gear 11 and a positioning rod 12.

[0036] A mounting frame 6 is fixedly connected to the outer wall of the lower terminal block 4. The mounting frame 6 is used to pre-position and install the control box 7. The control box 7 is detachably connected to the outer wall of the mounting frame 6. A connecting shaft 8 is rotatably connected to the inner wall of the control box 7. A bevel gear set 9 is fixedly connected to the outer wall of the connecting shaft 8. The bevel gear set 9 causes two sets of worm gears 10 to rotate relative to each other. The worm gear 10 is fixedly connected to the outer wall of the bevel gear set 9. A worm wheel 11 is meshed with the outer wall of the worm gear 10 and is rotatably connected to the inner wall of the control box 7. The worm wheel 11 drives the positioning rod 12 to rotate synchronously. The rotation center of the worm wheel 11 is fixedly connected to the positioning rod 12 located on one side of the mounting nut 5 through a rotating shaft. The positioning rod 12 is used to pre-abut and fix the surface of the mounting nut 5.

[0037] Reference Figure 6 A limiting groove 13 is provided at the connection between the outer wall of the control box 7 and the positioning rod 12, which is beneficial to achieve the effect of limiting the rotation of the positioning rod 12 through the opening of the limiting groove 13.

[0038] Reference Figure 3 , Figure 4 and Figure 5The end of the positioning rod 12 is bent at the contact point with the mounting nut 5. There are two sets of positioning rods 12, and the two sets of positioning rods 12 rotate in opposite directions. This is beneficial because the bent position of the end of the positioning rod 12 at the contact point with the mounting nut 5 helps to effectively abut and fix both sides of the mounting nut 5.

[0039] Reference Figure 7 A connecting plate 14 is fixedly connected to the top of the connecting shaft 8. A first nut 15 is provided on the top of the connecting plate 14. A first bolt 16 is threadedly connected to the inner wall of the first nut 15 and slidably connected to the top of the control box 7. A positioning groove 17 is provided at the connection between the top of the control box 7 and the first bolt 16. The positioning groove 17 is provided to effectively lock and fix the connecting shaft 8 after rotation.

[0040] Reference Figure 7 The positioning grooves 17 are arranged in a ring about the rotation center of the connecting shaft 8, which is beneficial to achieve the effect of locking and fixing the positioning rod 12 after multi-angle rotation by setting the positioning grooves 17 in a ring about the rotation center of the connecting shaft 8.

[0041] Reference Figure 2 and Figure 3 The outer wall of the mounting frame 6 is provided with a second nut 18, and the inner wall of the second nut 18 is threaded with a second bolt 19 that is slidably connected to the outer wall of the control box 7. The connection between the outer wall of the control box 7 and the second bolt 19 is provided with a mounting groove 20, which facilitates the easy snap-fit ​​installation and use of the control box 7 through the setting of the mounting groove 20.

[0042] Reference Figure 3 The outer wall of the mounting frame 6 is U-shaped, and the inner wall of the mounting groove 20 is provided with an inner spiral at the connection point between the inner wall of the mounting groove 20 and the second bolt 19. This facilitates the connection between the inner wall of the mounting groove 20 and the second bolt 19 with an inner spiral, thereby improving the stability of the control box 7 during installation and use.

[0043] The working principle of this type of drop-out surge arrester is as follows: When installing and using the lower terminal block 4 with the assistance of the mounting nut 5, in order to prevent the mounting nut 5 from shifting during long-term use and affecting the daily stability of the surge arrester, the control box 7 can be installed on the inner wall of the mounting frame 6, and the connecting shaft 8 is rotated. Through the connection of the bevel gear set 9, the worm gear 10 is driven to rotate. The rotation of the worm gear 10, through the connection of the worm wheel 11, drives the positioning rod 12 to rotate relative to each other, so that the positioning rod 12 abuts against the mounting nut 5, thereby improving the stability of the mounting nut 5 during long-term use.

[0044] When the angle of the positioning rod 12 is adjusted by rotating the connecting shaft 8, in order to improve the locking and fixing effect of the positioning rod 12 after rotation, the first bolt 16 is rotated and the first nut 15 limits the first bolt 16 to be inserted into the positioning groove 17, thereby improving the locking and fixing effect of the positioning rod 12 after rotation.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drop-out surge arrester, characterized in that: Includes a lightning protection body (1), the top of the lightning protection body (1) is provided with a terminal (2), the bottom of the lightning protection body (1) is provided with a lower terminal (3), the outer wall of the lower terminal (3) is installed with a lower terminal block (4), and the outer wall of the lower terminal (3) is threaded with an installation nut (5). The lower terminal block (4) is provided with a positioning mechanism on its outer wall, the positioning mechanism including a worm gear (11) and a positioning rod (12); The lower terminal block (4) is fixedly connected to the outer wall of the mounting frame (6), and the outer wall of the mounting frame (6) is detachably connected to the control box (7). The inner wall of the control box (7) is rotatably connected to the connecting shaft (8), and the outer wall of the connecting shaft (8) is fixedly connected to the bevel gear set (9). The outer wall of the bevel gear set (9) is fixedly connected to the worm gear (10), and the outer wall of the worm gear (10) is meshed with the worm wheel (11) which is rotatably connected to the inner wall of the control box (7). The rotation center of the worm wheel (11) is fixedly connected to the positioning rod (12) located on one side of the mounting nut (5) through the rotating shaft.

2. A drop-out surge arrester according to claim 1, characterized in that: A limiting groove (13) is provided at the connection between the outer wall of the control box (7) and the positioning rod (12).

3. A drop-out surge arrester according to claim 1, characterized in that: The end of the positioning rod (12) is bent at the contact point with the mounting nut (5). There are two sets of positioning rods (12), and the two sets of positioning rods (12) rotate in opposite directions.

4. A drop-out surge arrester according to claim 1, characterized in that: A connecting plate (14) is fixedly connected to the top of the connecting shaft (8). A first nut (15) is provided on the top of the connecting plate (14). A first bolt (16) is threadedly connected to the inner wall of the first nut (15) and slidably connected to the top of the control box (7). A positioning groove (17) is provided at the connection between the top of the control box (7) and the first bolt (16).

5. A drop-out surge arrester according to claim 4, characterized in that: The positioning grooves (17) are arranged in a ring about the rotation center of the connecting shaft (8).

6. A drop-out surge arrester according to claim 1, characterized in that: The outer wall of the mounting frame (6) is provided with a second nut (18), and the inner wall of the second nut (18) is threaded with a second bolt (19) that is slidably connected to the outer wall of the control box (7). The connection between the outer wall of the control box (7) and the second bolt (19) is provided with a mounting groove (20).

7. A drop-out surge arrester according to claim 6, characterized in that: The outer wall of the mounting frame (6) is U-shaped, and the inner wall of the mounting groove (20) is provided with an inner spiral at the connection between it and the second bolt (19).

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