Lightning arrester with drainage device

Abstract

The invention discloses a lightning arrester with a drainage device, and relates to the technical field of lightning arresters, the lightning arrester comprises a support, the support is provided with a supporting mechanism, the supporting mechanism is provided with a lightning arrester body, and the bottom of the lightning arrester body is provided with a grounding wire. According to the lightning arrester with the drainage device, when the hook drainage wire clamp is hung on a high-voltage power transmission line, the V-shaped clamping seat is driven to move to extrude the high-voltage power transmission line through the matching between the screw rod and the hook drainage wire clamp, so that the hook drainage wire clamp is mounted on the high-voltage power transmission line; the screw-thread fit between the extrusion bolt and the hook drainage wire clamp is utilized to drive the protective rubber pad to move, so that the end part of the protective rubber pad and the side part of the screw rod are extruded, and the friction force between the screw rod and the protective rubber pad is utilized to fix the screw rod and the V-shaped clamping seat, thereby ensuring the firmness of the hook drainage wire clamp installed on the high-voltage transmission line. The hook drainage wire clamp and the lead are prevented from being separated from the high-voltage transmission line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightning arresters, in particular to a lightning arrester with a current leading device. BACKGROUND

[0002] A lightning arrester is an electrical device used to protect electrical equipment from high transient over-voltage hazards, which ensures the safety of the equipment by limiting the amplitude and current duration of over-voltage. The lightning arrester is usually connected in parallel between the protected equipment or line and the ground, and presents a high resistance state under normal voltage, only passing through a microampere current; when over-voltage occurs, its resistance drops sharply, leading the current to the ground, thereby protecting the equipment insulation. During the installation of the lightning arrester, a lead is used to connect the lightning arrester and the high-voltage transmission line, but the stability of the existing current leading device installed on the transmission line is poor, and the lead is prone to falling off, affecting the protection of electrical equipment. At the same time, the connection between the lead and the current leading clamp, and the connection between the lead and the lightning arrester are affected by the external environment, which can cause the lead connection to loosen and cause the lightning arrester to fail. In addition, the length of the support bracket supporting the lightning arrester is fixed, which is not convenient for installing the lightning arrester at the appropriate position of the insulating cross arm, and brings difficulties to the installation of electric power personnel. Therefore, we propose a lightning arrester with a current leading device. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a lightning arrester with a current leading device, which solves the problems raised in the background art.

[0004] To achieve the above purpose, the technical scheme is as follows: a lightning arrester with a current leading device, comprising a support, a support mechanism is arranged on the support, a lightning arrester body is arranged on the support mechanism, a grounding wire is arranged at the bottom of the lightning arrester body, a lead is arranged at the top of the lightning arrester body, a clamp mechanism is arranged at the end of the lead, a first protection mechanism is arranged at the top of the lightning arrester body, a second protection mechanism is arranged on the clamp mechanism, a winding mechanism is arranged on the outside of the lead, a first wire ring is fixedly connected to each end of the lead, an installation plate is arranged at the bottom end of the lightning arrester body, and a plurality of second installation holes are arranged on the installation plate.

[0005] Optionally, the wire clamp mechanism comprises a conductive bolt sleeved outside a first wire connecting ring, a hook drainage wire clamp is threadedly mounted on the conductive bolt, a V-shaped clamping groove is arranged on the inner side of one end of the hook drainage wire clamp, a screw rod is threadedly sleeved on the hook drainage wire clamp, a V-shaped clamping seat is rotatably connected to one end of the screw rod through a bearing, a third spring is fixedly connected between the V-shaped clamping seat and the hook drainage wire clamp, a rotating ring is fixedly connected to the other end of the screw rod, an extrusion bolt is threadedly mounted on the side of the hook drainage wire clamp, a protective rubber pad is fixedly connected to the threaded end of the extrusion bolt, and the end surface of the protective rubber pad is in contact with the side surface of the screw rod.

[0006] Optionally, the first protection mechanism comprises a first supporting disc fixedly sleeved outside the lightning arrester body top end fitting, two first square grooves are arranged on the first supporting disc, first square columns are movably sleeved in the inner cavities of the two first square grooves, a first protection cover is fixedly connected to the top ends of the two first square columns, a first wire passing groove is arranged on the side of the first protection cover, first limiting discs are arranged on the outer sides of the two first square columns, the bottom surface of the first limiting disc is in abutment with the top surface of the first supporting disc, first telescopic grooves are arranged on the sides of the bottom ends of the two first square columns, first triangular clamping blocks are slidably connected in the inner cavities of the two first telescopic grooves, first contraction grooves are arranged at one end of the two first triangular clamping blocks, first springs are fixedly connected in the inner cavities of the first contraction grooves, the end portions of the first springs are connected with the inner walls of the first telescopic grooves, and the top surfaces of the first triangular clamping blocks are in abutment with the bottom surface of the first supporting disc.

[0007] Optionally, the second protection mechanism comprises second supporting seats fixedly connected to the two sides of the hook drainage wire clamp, second square grooves are arranged on the two second supporting seats, second square columns are movably sleeved in the inner cavities of the two second square grooves, a second protection cover is fixedly connected to the top ends of the two second square columns, a second wire passing groove is arranged on the side of the second protection cover, second limiting discs are arranged on the sides of the two second square columns, the bottom surface of the second limiting disc is in abutment with the top surface of the second supporting seat, second telescopic grooves are arranged on the sides of the bottom ends of the two second square columns, second triangular clamping blocks are slidably connected in the inner cavities of the two second telescopic grooves, second contraction grooves are arranged at one end of the two second triangular clamping blocks, second springs are fixedly connected to the inner walls of the second contraction grooves, the end portions of the second springs are connected with the inner walls of the second telescopic grooves, and the top surfaces of the second triangular clamping blocks are in abutment with the bottom surface of the second supporting seat.

[0008] Optionally, the winding mechanism comprises a winding box sleeved outside the lead wire, a winding column is fixedly connected in the inner cavity of the winding box, the middle part of the lead wire is wound outside the winding column, wire grooves are arranged on the two sides of the winding box, the lead wire penetrates through the inner cavities of the wire grooves, and a box cover is threadedly mounted on the end of the winding box.

[0009] Optionally, the support mechanism comprises a movable slot formed in the end of the support, a first mounting hole formed in the support, and a first welding female fixedly connected to the bottom surface of the support, the inner cavity of the movable slot movably sleeved with an extension frame, a plurality of first fixing holes arranged on the extension frame, the inner cavity of the first mounting hole sleeved with a first mounting bolt, the bottom end of the first mounting bolt threadedly sleeved to the inner side of the first welding female, the first mounting bolt penetrating the inner cavity of one first fixing hole, the end of the extension frame provided with a plurality of second fixing holes, the bottom surface of the extension frame and below the second fixing holes fixedly connected with a second welding female, the inner cavity of the second mounting hole sleeved with a second mounting bolt, the bottom end of the second mounting bolt penetrating the second fixing hole and threadedly mounted into the second welding female, and the extension frame provided with a through hole.

[0010] Optionally, the top of the lightning arrester body is provided with an upper wiring stud, another first wiring ring movably sleeved outside the upper wiring stud, the upper wiring stud threadedly mounted with a first fastening nut, the bottom of the lightning arrester body provided with a lower wiring stud, the bottom end of the lower wiring stud penetrating the through hole and extending to the bottom of the extension frame and threadedly sleeved with two second fastening nuts, both ends of the grounding wire fixedly connected with a second wiring ring, and one second wiring ring sleeved outside the lower wiring stud.

[0011] Optionally, the support is provided with a plurality of third mounting holes, and the support is provided with a plurality of mounting waist grooves.

[0012] The present application provides a lightning arrester with a drainage device, which has the following advantages: 1、The lightning arrester with a drainage device, when the hook drainage clamp is hung on the high-voltage transmission line, the V-shaped seat is driven to move by the cooperation between the screw rod and the hook drainage clamp to extrude the high-voltage transmission line, so that the hook drainage clamp is installed on the high-voltage transmission line, the protective rubber pad is moved by the thread cooperation between the extrusion bolt and the hook drainage clamp, the end of the protective rubber pad is extruded with the side of the screw rod, the screw rod and the V-shaped seat are fixed by the friction between the screw rod and the protective rubber pad, so as to ensure the firmness of the hook drainage clamp installed on the high-voltage transmission line, and prevent the hook drainage clamp and the lead wire from being separated from the high-voltage transmission line.

[0013] 2. The lightning arrester with the drainage device, when the two ends of the lead wire are connected with the lightning arrester body and the hook drainage wire clamp respectively, the first protective cover is installed above the lightning arrester body through the cooperation of the first supporting disc, the first square groove, the first square column, the first limiting disc and the first triangular clamping block, the connection between the lead wire and the lightning arrester body is protected by the first protective cover, at the same time, the first protective cover avoids the attachment of bird droppings and other dirt on the outer side of the lightning arrester body to cause the insulation level to decrease, in addition, the second protective cover is installed above the hook drainage wire clamp through the cooperation of the second supporting seat, the second square groove, the second square column, the second limiting disc and the second triangular clamping block, the connection between the hook drainage wire clamp and the lead wire is protected by the second protective cover to avoid loosening caused by the influence of rainwater and other environments, and the quality of lightning drainage is good.

[0014] 3. The lightning arrester with the drainage device, the distance between the lightning arrester body and the insulating cross arm is adjusted through the cooperation of the movable groove, the first mounting hole, the first welding female, the extension frame, the first fixing hole and the first mounting bolt, so that the position of the lightning arrester body is adjusted, in addition, the lead wire with the excess length is wound on the inner side of the winding box and the box cover, the length of the lead wire required can be adjusted according to the requirement, and the lead wire with the excess length can be stored, so that the lightning arrester body can be installed at a suitable position at a high place. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is an overall explosion schematic diagram of the present application; Figure 3 It is a schematic diagram of the structure of the mounting plate of the present application; Figure 4 It is a sectional view schematic diagram of the winding mechanism of the present application; Figure 5 It is a schematic diagram of the structure of the wire clamp mechanism of the present application; Figure 6 It is a sectional view schematic diagram of the hook drainage wire clamp of the present application; Figure 7 It is a schematic diagram of the structure of the first protective mechanism of the present application; Figure 8 It is a schematic diagram of the structure of the first triangular clamping block of the present application; Figure 9 It is a schematic diagram of the structure of the second protective mechanism of the present application; Figure 10 It is a schematic diagram of the structure of the second triangular clamping block of the present application; Figure 11 It is a schematic diagram of the structure of the supporting mechanism of the present application; Figure 12 It is a sectional view schematic diagram of the bracket of the present application.

[0016] In the diagram: 1. Bracket; 2. Support mechanism; 3. Surge arrester body; 4. Lead wire; 5. Wire clamp mechanism; 6. First protection mechanism; 7. Second protection mechanism; 8. Rewinding mechanism; 9. Mounting plate; 10. Upper terminal stud; 11. First fastening nut; 12. Lower terminal stud; 13. Second fastening nut; 14. Second terminal ring; 15. Grounding wire; 16. First terminal ring; 17. Conductive bolt; 18. Hook drain clamp; 19. V-shaped slot; 20. Screw; 21. V-shaped bracket; 22. Rotating ring; 23. Third spring; 24. Compression bolt; 25. Protective rubber pad; 26. Rewinding box; 27. Winding post; 28. Box cover; 29. ​​Cable tray; 30. First support plate; 31. First square slot; 32. First square post; 33. 34. First protective cover; 35. First wire threading groove; 36. First limiting plate; 37. First telescopic groove; 38. First triangular locking block; 39. First retraction groove; 40. First spring; 41. Second support; 42. Second square groove; 43. Second square column; 44. Second protective cover; 45. Second wire threading groove; 46. Second limiting plate; 47. Second telescopic groove; 48. Second triangular locking block; 49. Second retraction groove; 50. Second spring; 51. Movable groove; 52. First mounting hole; 53. First welding nut; 54. Extension frame; 55. First fixing hole; 56. First mounting bolt; 57. Second fixing hole; 58. Second welding nut; 59. Through hole; 60. Third mounting hole; 61. Mounting waist groove; 62. Second mounting hole. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Please see Figures 1 to 12 The present invention provides a technical solution: a surge arrester with a current-draining device, including a bracket 1, a support mechanism 2 on the bracket 1, a surge arrester body 3 on the support mechanism 2, the surge arrester body 3 may be an air gap surge arrester, a grounding wire 15 is provided at the bottom of the surge arrester body 3, a lead wire 4 is provided at the top of the surge arrester body 3, a wire clamp mechanism 5 is provided at the end of the lead wire 4, a first protection mechanism 6 is provided at the top of the surge arrester body 3, a second protection mechanism 7 is provided on the wire clamp mechanism 5, a winding mechanism 8 is provided on the outside of the lead wire 4, a first connecting ring 16 is fixedly connected to both ends of the lead wire 4, and a mounting plate 9 is provided at the bottom of the surge arrester body 3, with a plurality of second mounting holes 62 provided on the mounting plate 9.

[0019] The clamp mechanism 5 includes a conductive bolt 17 sleeved on the outside of a first connecting ring 16. A hook-type drain clamp 18 is threaded onto the conductive bolt 17. A V-shaped groove 19 is provided on the inner side of one end of the hook-type drain clamp 18. A screw 20 is threaded onto the hook-type drain clamp 18. One end of the screw 20 is rotatably connected to a V-shaped retainer 21 via a bearing. The side of the V-shaped retainer 21 is slidably connected to the inner side of the hook-type drain clamp 18. The V-shaped groove 19 and the V-shaped retainer 21 cooperate to clamp and fix the high-voltage transmission line. A third spring 23 is fixedly connected between the V-shaped bracket 21 and the hook drain clamp 18. A rotating ring 22 is fixedly connected to the other end of the screw 20. A compression bolt 24 is installed on the side thread of the hook drain clamp 18. A protective rubber pad 25 is fixedly connected to the threaded end of the compression bolt 24. The end face of the protective rubber pad 25 is in contact with the side of the screw 20. The hook drain clamp 18, the V-shaped bracket 21, and the conductive bolt 17 are all made of conductive material. The hook drain clamp 18 and the V-shaped bracket 21 can be made of aluminum.

[0020] The first protective mechanism 6 includes a first support plate 30 fixedly sleeved on the outer side of the top fitting of the surge arrester body 3. The first support plate 30 has two first square slots 31, and each of the two first square slots 31 has a first square post 32 movably sleeved within its inner cavity. The side of the first square post 32 fits against the inner wall of the first square slot 31, ensuring the stability of the first square post 32 within the first square slot 31. A first protective cover 33 is fixedly connected to the top of each of the two first square posts 32. A first wire-passing groove 34 is provided on the side of the first protective cover 33 for passing the lead wire 4 through the inner cavity of the first protective cover 33. A first limiting plate 35 is provided on the outer side of each of the first square posts 32. The bottom surface of the first square post 32 is in contact with the top surface of the first support plate 30. The side of the bottom end of the first square post 32 is provided with a first telescopic groove 36. The inner cavity of the two first telescopic grooves 36 is slidably connected with a first triangular locking block 37. The side of the first triangular locking block 37 is in contact with the inner wall of the first telescopic groove 36. One end of the two first triangular locking blocks 37 is provided with a first contraction groove 38. The inner cavity of the first contraction groove 38 is fixedly connected with a first spring 39. The end of the first spring 39 is connected with the inner wall of the first telescopic groove 36. The top surface of the first triangular locking block 37 is in contact with the bottom surface of the first support plate 30. The first square post 32 is fixed on the first support plate 30 by the cooperation of the first triangular locking block 37 and the first limiting plate 35.

[0021] The second protective mechanism 7 includes second supports 40 fixedly connected to both sides of the hook drain clamp 18. Each second support 40 has a second square groove 41, and a second square post 42 is movably fitted into the inner cavity of each second square groove 41. The side of the second square post 42 fits against the inner wall of the second square groove 41 to ensure the stability of the second square post 42 inserted into the second square groove 41. A second protective cover 43 is fixedly connected to the top of each of the two second square posts 42. The second protective cover 43 and the first protective cover 33 can be made of transparent plastic. The first square post 32, the second square post 42, the first triangular locking block 37, the second triangular locking block 47, and the first support plate 30 can be made of ceramic to ensure their insulation. A second wire-passing groove 44 is provided on the side of the second protective cover 43 for the wire 4 to pass through the second protective cover 4. Inside the second support 40, the sides of the two second square pillars 42 are provided with second limiting plates 45. The bottom surface of the second limiting plates 45 is in contact with the top surface of the second support 40. The sides of the bottom ends of the two second square pillars 42 are provided with second telescopic grooves 46. The inner cavities of the two second telescopic grooves 46 are slidably connected with second triangular blocks 47. The side of the second triangular blocks 47 is in contact with the inner wall of the second telescopic groove 46. One end of the two second triangular blocks 47 is provided with a second contraction groove 48. The inner wall of the second contraction groove 48 is fixedly connected with a second spring 49. The end of the second spring 49 is connected to the inner wall of the second telescopic groove 46. The top surface of the second triangular blocks 47 is in contact with the bottom surface of the second support 40. The second protective cover 43 is fixed on the second support 40 by the cooperation of the second triangular blocks 47 and the second limiting plates 45.

[0022] The winding mechanism 8 includes a winding box 26 sleeved on the outside of the lead wire 4. A winding post 27 is fixedly connected to the inner cavity of the winding box 26. The middle part of the lead wire 4 is wound around the outside of the winding post 27. Both sides of the winding box 26 are provided with wire routing grooves 29. The lead wire 4 passes through the inner cavity of the wire routing grooves 29. A box cover 28 is threaded onto the end of the winding box 26. The excess length of the lead wire 4 is stored through the winding box 26 and the box cover 28.

[0023] The support mechanism 2 includes a movable groove 50 at the end of the bracket 1, a first mounting hole 51 on the bracket 1, and a first welding nut 52 fixedly connected to the bottom surface of the bracket 1. An extension frame 53 is movably fitted into the inner cavity of the movable groove 50. The outer side of the extension frame 53 fits against the inner wall of the movable groove 50 to ensure the stability of the extension frame 53 fitted onto the movable groove 50. The extension frame 53 is provided with multiple first fixing holes 54. A first mounting bolt 55 is fitted into the inner cavity of the first mounting hole 51. The bottom end of the first mounting bolt 55 is threaded into the inner side of the first welding nut 52. The first mounting bolt 55 penetrates the inner cavity of one of the first fixing holes 54. The outer diameter of the threaded end of the first mounting bolt 55 is the same as that of the first mounting hole 51 and the first fixing hole 52. The inner diameters of the two brackets are equal to ensure the stability of the connection between the bracket 1 and the extension bracket 53. The end of the extension bracket 53 is provided with multiple second fixing holes 56. The bottom surface of the extension bracket 53 and below the second fixing holes 56 are fixedly connected to the second welding nut 57. The inner cavity of the second mounting hole 62 is fitted with a second mounting bolt 58. The bottom end of the second mounting bolt 58 passes through the second fixing hole 56 and is threaded into the second welding nut 57. The outer diameter of the threaded end of the second mounting bolt 58 is equal to the inner diameter of the second fixing hole 56 and the second mounting hole 62, ensuring that the mounting plate 9 below the surge arrester body 3 is stably installed on the extension bracket 53. The extension bracket 53 is provided with a through hole 59, which is used for the lower wiring stud 12 at the bottom of the surge arrester body 3 to pass through.

[0024] The surge arrester body 3 has an upper connecting stud 10 on its top. Another first connecting ring 16 is movably fitted onto the outside of the upper connecting stud 10. A first fastening nut 11 is threaded onto the upper connecting stud 10. The inner diameter of the first connecting ring 16 is equal to the outer diameter of the threaded end of the upper connecting stud 10 and the conductive bolt 17, ensuring the stability of the first connecting ring 16 fitted onto the upper connecting stud 10 and the conductive bolt 17. The other first connecting ring 16 is connected to the top of the surge arrester body 3 using the upper connecting stud 10. A lower connecting stud is located at the bottom of the surge arrester body 3. The bottom end of the lower connecting stud 12 extends through the through hole 59 to the bottom of the extension frame 53 and is threaded with two second fastening nuts 13. Both ends of the grounding wire 15 are fixedly connected with second connecting rings 14. One second connecting ring 14 is sleeved on the outside of the lower connecting stud 12. The inner diameter of the second connecting ring 14 is equal to the outer diameter of the lower connecting stud 12 to ensure that the second connecting ring 14 can be stably sleeved on the lower connecting stud 12. At the same time, the two second fastening nuts 13 are used to fix the second connecting ring 14. The other second connecting ring 14 is connected to the grounding cable.

[0025] The bracket 1 is provided with multiple third mounting holes 60 and multiple mounting grooves 61. The bracket 1 is installed on the insulating crossarm by the cooperation of the third mounting holes 60, mounting grooves 61 and bolts.

[0026] In summary, when using this surge arrester with a current-draining device, first place the bracket 1 on the insulating crossarm, aligning the third mounting hole 60 and the mounting groove 61 with the mounting holes on the insulating crossarm. Then, install the bracket 1 on the insulating crossarm using bolts. Next, install the surge arrester body 3 onto the extension frame 53 using the second mounting hole 62, the second fixing hole 56, the second welding nut 57, and the second mounting bolt 58. Remove the first mounting bolt 55 to release the fixation between the bracket 1 and the extension frame 53. Pull the extension frame 53 in the bracket 1 to move the surge arrester body 3 to a suitable position, aligning the first mounting hole 51 with the other first fixing hole 54. Finally, use the first mounting hole 51, the first fixing hole 54, and the first welding nut 52... The first mounting bolt 55 is used to fix the position between the bracket 1 and the extension bracket 53. Then, the V-shaped groove 19 on the hook drain clamp 18 is placed on the outside of the high-voltage transmission line. The rotating ring 22 is held to rotate the screw 20. Through the threaded engagement between the screw 20 and the hook drain clamp 18, the V-shaped bracket 21 moves closer to the V-shaped groove 19. The engagement between the V-shaped bracket 21 and the V-shaped groove 19 fixes the hook drain clamp 18 to the high-voltage transmission line. At this time, the clamping bolt 24 is rotated. Through the threaded engagement between the clamping bolt 24 and the hook drain clamp 18, the protective rubber pad 25 moves, so that the end of the protective rubber pad 25 abuts against the side of the screw 20, thereby fixing the screw 20 and ensuring the hook drain line... First, secure the clamp 18 to the high-voltage transmission line. Then, place the first connecting ring 16 at one end of the lead wire 4 onto the upper connecting stud 10 on the top of the arrester body 3. Secure the first connecting ring 16 by cooperating with the first fastening nut 11 and the upper connecting stud 10. Place the first connecting ring 16 at the other end of the lead wire 4 onto the conductive bolt 17 and thread the conductive bolt 17 onto the hook lead wire clamp 18. Pass the excess length of the lead wire 4 through the cable tray 29 into the inner cavity of the winding box 26, so that the excess length of the lead wire 4 is wound around the outside of the winding post 27. Thread the box cover 28 onto the winding box 26 to limit the lead wire 4 inside the winding box 26. Finally, place the second connecting ring 14 at one end of the grounding wire 15 onto the lower end of the arrester body 3. On the wiring stud 12, the second wiring ring 14 is fixed by two second fastening nuts 13, so that the second wiring ring 14 at the other end of the grounding wire 15 is connected to the grounding cable. Finally, the first protective cover 33 is placed above the surge arrester body 3, so that the bottom end of the first square post 32 is inserted into the first square groove 31 on the first support plate 30. During the downward insertion of the first square post 32, the first triangular locking block 37 is pushed into the inner cavity of the first telescopic groove 36 by the inner wall of the first square groove 31. When the first triangular locking block 37 moves to the bottom of the first support plate 30, the elastic force of the first spring 39 drives the first triangular locking block 37 to move outward. Through the cooperation of the first triangular locking block 37 and the first limiting plate 35, the first square post 32 is installed on the first support plate 30.Thus, the first protective cover 33 protects the upper part of the surge arrester body 3, and the second protective cover 43 is placed above the hook drain clamp 18, so that the bottom end of the second square post 42 is inserted into the second square groove 41 on the second support 40. During the downward insertion of the second square post 42, the second triangular locking block 47 is pushed into the inner cavity of the second telescopic groove 46 by the inner wall of the second square groove 41. When the second triangular locking block 47 moves to the bottom of the second support 40, the elastic force of the second spring 49 drives the second triangular locking block. 47 moves outward, and through the cooperation of the second triangular locking block 47 and the second limiting plate 45, the second square post 42 is installed on the second support 40, thereby using the second protective cover 43 to protect the area above the hook drain clamp 18. When the high-voltage transmission line is struck by lightning, the high-voltage current is led into the ground through the hook drain clamp 18, conductive bolt 17, first connecting ring 16, lead wire 4, upper connecting stud 10, surge arrester body 3, lower connecting stud 12, second connecting ring 14, grounding wire 15, and grounding cable.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surge arrester with a current-draining device, characterized in that: The device includes a bracket (1), a support mechanism (2) on the bracket (1), a surge arrester body (3) on the support mechanism (2), a grounding wire (15) at the bottom of the surge arrester body (3), a lead wire (4) at the top of the surge arrester body (3), a wire clamp mechanism (5) at the end of the lead wire (4), a first protection mechanism (6) at the top of the surge arrester body (3), a second protection mechanism (7) on the wire clamp mechanism (5), a winding mechanism (8) on the outside of the lead wire (4), a first connecting ring (16) fixedly connected to both ends of the lead wire (4), and a mounting plate (9) at the bottom of the surge arrester body (3), with multiple second mounting holes (62) on the mounting plate (9).

2. A surge arrester with a current-draining device according to claim 1, characterized in that: The clamp mechanism (5) includes a conductive bolt (17) sleeved on the outside of a first connecting ring (16), a hook drain clamp (18) threaded on the conductive bolt (17), a V-shaped groove (19) provided on the inner side of one end of the hook drain clamp (18), a screw (20) threaded on the hook drain clamp (18), a V-shaped seat (21) rotatably connected to one end of the screw (20) through a bearing, a third spring (23) fixedly connected between the V-shaped seat (21) and the hook drain clamp (18), a rotating ring (22) fixedly connected to the other end of the screw (20), a compression bolt (24) threaded on the side of the hook drain clamp (18), a protective rubber pad (25) fixedly connected to the threaded end of the compression bolt (24), and the end face of the protective rubber pad (25) in contact with the side of the screw (20).

3. A surge arrester with a current-draining device according to claim 1, characterized in that: The first protective mechanism (6) includes a first support plate (30) fixedly sleeved on the outside of the top fitting of the surge arrester body (3). The first support plate (30) is provided with two first square slots (31). The inner cavity of each of the two first square slots (31) is movably sleeved with a first square post (32). The top of each of the two first square posts (32) is fixedly connected with a first protective cover (33). The side of the first protective cover (33) is provided with a first wire groove (34). The outside of each of the first square posts (32) is provided with a first limiting plate (35). The bottom surface of the first limiting plate (35) and the first... The top surface of a plate (30) is in contact with the bottom of the first square column (32), and the side of the bottom of the first square column (32) is provided with a first telescopic groove (36). The inner cavity of the two first telescopic grooves (36) is slidably connected with a first triangular block (37). One end of the two first triangular blocks (37) is provided with a first contraction groove (38). The inner cavity of the first contraction groove (38) is fixedly connected with a first spring (39). The end of the first spring (39) is connected to the inner wall of the first telescopic groove (36). The top surface of the first triangular block (37) is in contact with the bottom surface of the first plate (30).

4. A surge arrester with a current-draining device according to claim 2, characterized in that: The second protective mechanism (7) includes second supports (40) fixedly connected to both sides of the hook drain clamp (18). Each of the two second supports (40) is provided with a second square groove (41). The inner cavity of each of the two second square grooves (41) is movably fitted with a second square post (42). The top of each of the two second square posts (42) is fixedly connected with a second protective cover (43). The side of the second protective cover (43) is provided with a second wire-passing groove (44). The side of each of the two second square posts (42) is provided with a second limiting plate (45). The bottom surface of the second limiting plate (45) is connected to the second... The top surfaces of the support (40) are in contact with each other. The sides of the bottom ends of the two second square columns (42) are provided with second telescopic grooves (46). The inner cavities of the two second telescopic grooves (46) are slidably connected with second triangular blocks (47). One end of the two second triangular blocks (47) is provided with a second contraction groove (48). The inner wall of the second contraction groove (48) is fixedly connected with a second spring (49). The end of the second spring (49) is connected to the inner wall of the second telescopic groove (46). The top surface of the second triangular block (47) and the bottom surface of the second support (40) are in contact with each other.

5. A surge arrester with a current-draining device according to claim 1, characterized in that: The winding mechanism (8) includes a winding box (26) sleeved on the outside of the lead wire (4). The inner cavity of the winding box (26) is fixedly connected to a winding post (27). The middle part of the lead wire (4) is wound around the outside of the winding post (27). Both sides of the winding box (26) are provided with a wire routing groove (29). The lead wire (4) passes through the inner cavity of the wire routing groove (29). The end of the winding box (26) is threaded with a box cover (28).

6. A surge arrester with a current-draining device according to claim 1, characterized in that: The support mechanism (2) includes a movable groove (50) at the end of the bracket (1), a first mounting hole (51) on the bracket (1), and a first welding nut (52) fixedly connected to the bottom surface of the bracket (1). An extension frame (53) is movably sleeved in the inner cavity of the movable groove (50). A plurality of first fixing holes (54) are provided on the extension frame (53). A first mounting bolt (55) is sleeved in the inner cavity of the first mounting hole (51). The bottom end of the first mounting bolt (55) is threaded to the inner side of the first welding nut (52). A mounting bolt (55) passes through the inner cavity of a first fixing hole (54). The end of the extension frame (53) is provided with multiple second fixing holes (56). The bottom surface of the extension frame (53) and below the second fixing holes (56) is fixedly connected with a second welding nut (57). The inner cavity of the second mounting hole (62) is fitted with a second mounting bolt (58). The bottom end of the second mounting bolt (58) passes through the second fixing hole (56) and is threaded into the second welding nut (57). The extension frame (53) is provided with a through hole (59).

7. A surge arrester with a current-draining device according to claim 6, characterized in that: The upper terminal block (10) is provided on the top of the surge arrester body (3), and another first terminal ring (16) is movably sleeved on the outside of the upper terminal block (10). The upper terminal block (10) is threaded with a first fastening nut (11). The lower terminal block (3) is provided on the bottom of the surge arrester body (3). The bottom end of the lower terminal block (12) extends through the through hole (59) to the bottom of the extension frame (53) and is threaded with two second fastening nuts (13). The two ends of the grounding wire (15) are fixedly connected with second terminal rings (14), and one second terminal ring (14) is sleeved on the outside of the lower terminal block (12).

8. A surge arrester with a current-draining device according to claim 1, characterized in that: The bracket (1) is provided with multiple third mounting holes (60) and multiple mounting grooves (61).

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