Downward-leading type grounding device for power distribution overhead line

Abstract

The invention discloses a power distribution overhead line down-leading type grounding device, which comprises a hanging joint, the hanging joint is arranged in a U shape with a downward bayonet, the exterior of the lower end of the hanging joint is connected with a connecting seat, the lower end of the connecting seat is connected with an insulating rod, the lower side of the left end of the hanging joint is connected with a grounding wire, and the other end of the grounding wire is connected with a grounding body. Limiting sliding grooves are formed in the inner walls of the left end and the right end of the hanging connector, limiting clamping heads are clamped into the two limiting sliding grooves, and the two limiting clamping heads are slidably connected into the two limiting sliding grooves correspondingly. The U-shaped hanging connector is designed, the hanging connector can be conveniently and rapidly hung on an overhead line, the limiting clamping heads are embedded into the inner walls of the hanging connector, and therefore the hanging connector can be conveniently and rapidly hung on the overhead line. A limiting clamping groove is formed in the limiting clamping head, self-adaptive clamping is achieved through connection of the elastic spring and the limiting clamping groove, hitching stability is ensured, an overhead line is prevented from sliding in the hitching head, and meanwhile falling can be prevented through the other limiting clamping grooves.

Description

Technical Field

[0001] The invention belongs to the technical field of related power system maintenance, and in particular relates to a down-lead grounding device for a power distribution overhead line. Background Art

[0002] In the operation and maintenance of the power system, the safety of the distribution overhead line maintenance is of vital importance. When inspecting or maintaining the overhead line, hanging a temporary grounding wire is one of the key measures to ensure the safety of the maintenance personnel.

[0003] The grounding device hook joint in the prior art has a simple structure and is only fixed by a simple hook or clamp. The hook stability is insufficient and it is easy to fall off under wind force or line swing, threatening the safety of maintenance personnel.

[0004] The length of the connecting ground wire in the traditional grounding device is fixed, and it cannot be adjusted in real time according to the swing of the overhead line, resulting in the ground wire being too tight or too loose. Not only may it cause additional tension on the ground, but it may also be entangled with maintenance personnel due to its excessive length, affecting work efficiency and safety.

[0005] Grounding electrodes are usually driven directly into the soil without effective reinforcement measures. They are easily moved due to loose soil or external forces, resulting in unstable grounding, affecting the grounding effect and maintenance safety.

[0006] In order to solve the above technical problems, the present invention proposes a distribution overhead line down-lead grounding device, which significantly improves the safety and efficiency of the maintenance process by designing a unique hanging and stabilizing mechanism, a ground wire length and tightness automatic adjustment system, and a ground body depth and position reinforcement technology. Specific innovations include an adaptive clip-on hanging joint, an insulating rod assembly that automatically adjusts the length and tightness of the ground wire, and a telescopic reinforcement plug that increases the stability of the ground body. The integrated application of these technologies provides a safer and more efficient grounding solution for the field of power maintenance. Summary of the invention

[0007] The purpose of the present invention is to provide a distribution overhead line down-lead grounding device to solve the problems in the above-mentioned background technology that the traditional grounding device hanging joint structure is simple and easy to fall off, the length of the connecting ground wire is fixed and cannot be adjusted in real time, and the grounding body lacks effective reinforcement and is easy to move.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a distribution overhead line down-lead grounding device, including a hanging joint, the hanging joint is arranged in a "U" shape with the bayonet downward, the lower end of the hanging joint is externally connected to a connecting seat, the lower end of the connecting seat is connected to an insulating rod, the lower side of the left end of the hanging joint is connected to a grounding wire, and the other end of the grounding wire is connected to a grounding body.

[0009] Preferably, the inner walls at both ends of the hanging joint are provided with limiting grooves, and the two limiting grooves are both clamped with limiting clamps, and the two limiting clamps are respectively slidably connected to the inside of the two limiting grooves, and the two limiting clamps protrude from the "U" shape of the hanging joint and can be completely retracted into the limiting grooves.

[0010] Preferably, the limit clamp is provided with spring grooves on the upper and lower sides of one end away from the interior of the hanging joint, limit springs are arranged inside the two spring grooves, and the limit clamp is elastically connected to the interior of the limit slide groove through the two limit springs, and a plurality of limit grooves are provided at one end of the limit clamp close to the interior of the hanging joint.

[0011] Preferably, a positioning groove is opened inside the upper side of the left end of the insulating rod, and the upper and lower ends of the positioning groove are clamped with limiting sliders, and two limiting sliders are slidably connected inside the positioning groove, and the left ends of the two limiting sliders are connected to winding clamp rods, and the two winding clamp rods are both set in a "U" shape with the opening facing the insulating rod.

[0012] Preferably, pull-out rollers are sleeved on the outer parts of the upper and lower ends of the winding clamp rod, and the two pull-out rollers are rollingly connected to the outer part of the winding clamp rod, and a limiting slide rod is fixedly connected between the inner walls of the upper and lower ends of the adjustment slide groove, and the limiting slide rod passes through the two limiting slide blocks from top to bottom.

[0013] Preferably, the two limit sliders are slidably connected to the outside of the limit slide rod, a tensioning spring is arranged between the two limit sliders, and is elastically connected to the inside of the adjustment slide groove through the tensioning spring, and the tensioning spring is sleeved on the outside of the limit slide rod.

[0014] Preferably, a screw hole is penetrated upward inside the upper end of the grounding body, a bolt is threadedly connected inside the upper end of the screw hole, and a plurality of telescopic slide grooves are opened inside the lower side of the cylindrical outer wall of the grounding body, and the plurality of telescopic slide grooves are connected to the inside of the screw hole.

[0015] Preferably, a reinforcement plug is slidably connected inside the telescopic slide groove, and the reinforcement plug can be completely retracted into the telescopic slide groove. The reinforcement plug is set at a sharp angle at one end away from the screw hole, and the outer wall of the end close to the screw hole is flush with the inner wall of the screw hole. The reinforcement plug is fixedly connected to a limiting clamp in the tangential direction of the grounding body.

[0016] Preferably, the reinforcement plug is clamped in the telescopic slide slot via a limiting card plate, a contraction spring is provided at one end of the limiting card plate away from the screw hole, and the reinforcement plug and the limiting card plate are elastically connected in the telescopic slide slot via the contraction spring.

[0017] Preferably, the reinforcement block has an adjusting ball rollingly connected to the inside of one end near the screw hole, and the adjusting ball is clamped in the reinforcement block, and a plurality of adjusting grooves are clamped inside the lower side of the cylindrical outer wall of the screw hole, and the adjusting ball is clamped in the adjusting grooves and can roll between the outer wall of the screw hole and the inside of the adjusting grooves.

[0018] Compared with the prior art, the present invention provides a distribution overhead line down-lead type grounding device, which has the following beneficial effects:

[0019] 1. Stable hanging and adaptive clamping mechanism: A U-shaped hanging joint is designed for quick hanging on the overhead line. A limit clamp is embedded in the inner wall of the hanging joint. A limit clamp slot is provided inside the limit clamp. The elastic spring connection and the limit clamp slot are used to achieve adaptive clamping, ensuring the stability of the hanging and preventing the overhead line from sliding in the hanging joint. At the same time, the remaining limit clamp slots can prevent it from falling off.

[0020] 2. Automatic adjustment system for ground wire length and tightness: An adjustment slot is set inside the insulating rod, which cooperates with the limit slider and the winding clamp rod to automatically adjust the length and tightness of the ground wire through the tension spring. The pull-out roller ensures that the ground wire moves smoothly during the adjustment process to prevent the maintenance operation from being affected by the ground wire being too long or too tight.

[0021] 3. Grounding body depth and position reinforcement technology: Bolts and telescopic reinforcement blocks are designed inside the grounding body. The reinforcement blocks are extended by pressing down the adjustment balls with the bolts to increase the contact area with the soil and improve the stability of the grounding body. The reinforcement blocks are automatically extended and retracted by contracting the springs to ensure that the depth of the grounding body underground remains unchanged, thereby improving the grounding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the down-lead grounding device of the present invention.

[0023] Figure 2 It is a schematic diagram of the connection structure of the hanging joint of the present invention.

[0024] Figure 3 It is a schematic diagram of the insulating rod connection structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the insulating rod of the present invention.

[0026] Figure 5 For the present invention Figure 4 Enlarged schematic diagram at point A in the middle.

[0027] Figure 6 It is a schematic diagram of the grounding body connection structure of the present invention.

[0028] Figure 7It is an enlarged schematic diagram of point B in the limiting slide groove of the present invention.

[0029] In the figure: 1. Hanging joint; 2. Connecting seat; 3. Insulating rod; 4. Connecting ground wire; 5. Grounding body; 6. Limiting slide groove; 7. Limiting clamp head; 8. Spring groove; 9. Limiting spring; 10. Limiting clamping slot; 11. Adjusting slide groove; 12. Limiting slider; 13. Winding clamping rod; 14. Pull-out roller; 15. Limiting slide rod; 16. Tensioning spring; 17. Screw hole; 18. Bolt; 19. Telescopic slide groove; 20. Reinforcement plug; 21. Limiting clamp plate; 22. Contraction spring; 23. Adjusting ball; 24. Adjusting roller groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention provides Figure 1-Figure 7 A distribution overhead line down-lead grounding device is shown, comprising a hanging joint 1, which is arranged in a "U" shape with the bayonet downward, a connecting seat 2 is externally connected to the lower end of the hanging joint 1, an insulating rod 3 is connected to the lower end of the connecting seat 2, a connecting ground wire 4 is connected to the lower side of the left end of the hanging joint 1, and a grounding body 5 is connected to the other end of the connecting ground wire 4. When the distribution overhead line is inspected and maintained, in order to protect the safety of the maintenance personnel, it is necessary to hang the ground wire. The down-lead grounding device can stably hang the ground wire of the overhead line. First, the grounding body 5 is driven into a specific depth underground, and then the maintenance personnel hold the insulating rod 3 to hang the hanging joint 1 on the overhead line. The hanging joint 1 can be connected to the grounding body 5 through the connecting ground wire 4, and connected to the earth through the grounding body 5, thereby ensuring the safety of the maintenance personnel.

[0032] Preferably, the inner walls at both ends of the hanging joint 1 are provided with limit slots 6, the two limit slots 6 are both clamped with limit clamps 7, and the two limit clamps 7 are respectively slidably connected to the inside of the two limit slots 6, the two limit clamps 7 are both protruding from the "U"-shaped inside of the hanging joint 1, and can be completely retracted into the inside of the limit slots 6, the limit clamps 7 are provided with spring slots 8 on the upper and lower sides of the end away from the inside of the hanging joint 1, the two spring slots 8 are both provided with limit springs 9, and the limit clamps 7 are elastically connected to the inside of the limit slots 6 through two limit springs 9, and the limit clamps 7 are provided with a plurality of limit slots 10 at one end close to the inside of the hanging joint 1. When the hook joint 1 is on the line, the lower end opening of the hook joint 1 is aligned with the upper end of the overhead line, and the overhead line is clamped into the hook joint 1. In the process of the overhead line being clamped into the hook joint 1, the overhead line squeezes the two limit clamps 7 to both sides and passes through between the two limit clamps 7 until it is clamped into the uppermost side of the hook joint 1. The two limit clamps 7 clamp the overhead line through the uppermost limit clamping groove 10 and the upper inner wall of the hook joint 1, thereby limiting the position between the hook joint 1 and the overhead line. At the same time, the limit clamping groove 10 on the lower side can prevent the overhead line from sliding out of the hook joint 1, thereby ensuring the hanging stability between the hook joint 1 and the overhead line, thereby improving the maintenance safety.

[0033] Preferably, an adjustment slot 11 is provided inside the upper side of the left end of the insulating rod 3, and the upper and lower ends of the adjustment slot 11 are both clamped with limit sliders 12, and the two limit sliders 12 are slidably connected inside the adjustment slot 11, and the left ends of the two limit sliders 12 are connected to the winding clamp rods 13, and the two winding clamp rods 13 are both in a "U" shape with an opening toward the insulating rod 3, and the upper and lower ends of the winding clamp rods 13 are both sleeved with pull-out rollers 14, and the two pull-out rollers 14 are rolling The limiting slide bar 15 is fixedly connected to the inner wall of the upper and lower ends of the adjusting slide groove 11, and the limiting slide bar 15 passes through the two limiting sliders 12, and the two limiting sliders 12 are slidably connected to the outside of the limiting slide bar 15. A tensioning spring 16 is arranged between the two limiting sliders 12, and the inside of the adjusting slide groove 11 is elastically connected through the tensioning spring 16, and the tensioning spring 16 is sleeved on the outside of the limiting slide bar 15. The connecting ground wire 4 first passes through the lower winding clamp rod 13, then winds upward around the upper winding clamp rod 13, and finally connects downward to the grounding body 5, and the two winding clamp rods 13 are slidably connected to the adjustment slot 11 through two limit sliders 12, and are elastically connected to the outside of the adjustment slot 11 through a tensioning spring 16. Therefore, when the connecting ground wire 4 is pulled, the length and tightness of the connecting ground wire 4 can be adjusted through the two elastically connected winding clamp rods 13, thereby preventing the connecting ground wire 4 from being pulled on the grounding body 5 due to the swing of the overhead line, causing the grounding body 5 to be pulled out of the ground, and at the same time, it can prevent the connecting ground wire 4 from drooping too long and entangled with maintenance personnel, causing obstruction to maintenance, thereby further improving the maintenance safety, and in the process of adjusting the length and tightness of the connecting ground wire 4 between the two winding clamp rods 13, it can be smoothly pulled inside the two winding clamp rods 13 through the pulling roller 14, ensuring that the connecting ground wire 4 can be smoothly adjusted in length and tightness.

[0034] Preferably, a screw hole 17 is penetrated upward inside the upper end of the grounding body 5, and a bolt 18 is threadedly connected inside the upper end of the screw hole 17. A plurality of telescopic slide grooves 19 are provided inside the lower side of the cylindrical outer wall of the grounding body 5, and the plurality of telescopic slide grooves 19 are connected to the inside of the screw hole 17. A reinforcement plug 20 is slidably connected inside the telescopic slide groove 19, and the reinforcement plug 20 can be completely retracted into the telescopic slide groove 19. The reinforcement plug 20 is arranged at a sharp angle away from the screw hole 17, and the outer wall of the end close to the screw hole 17 is flush with the inner wall of the screw hole 17. The reinforcement plug 20 is The grounding body 5 is fixedly connected to the limit card plate 21 in the tangential direction, and the reinforcement plug 20 is clamped in the telescopic slide 19 through the limit card plate 21. The limit card plate 21 is provided with a contraction spring 22 at the end away from the screw hole 17, and the reinforcement plug 20 and the limit card plate 21 are elastically connected in the telescopic slide 19 through the contraction spring 22. The reinforcement plug 20 is connected to the end of the screw hole 17 by rolling with a positioning ball 23, and the positioning ball 23 is clamped in the reinforcement plug 20. A plurality of positioning balls are provided inside the lower side of the cylindrical outer wall of the screw hole 17. The positioning ball 23 is clamped in the positioning rolling groove 24 and can roll between the outer wall of the screw hole 17 and the inside of the positioning rolling groove 24. Before the grounding body 5 is driven into the ground, the reinforcing plug 20 is completely retracted in the telescopic slide groove 19 under the action of the contraction spring 22, and the positioning ball 23 is clamped in the positioning rolling groove 24. After the grounding body 5 is driven into the ground, the bolt 18 is screwed downward. Since the inner wall of the positioning rolling groove 24 and the intersection of the inner wall of the positioning rolling groove 24 and the cylindrical outer wall of the screw hole 17 are both arranged in an arc surface, The positioning ball 23 can roll between the cylindrical outer wall of the screw hole 17 and the inner wall of the positioning groove 24, so the bolt 18 can extrude the positioning ball 23 to the side away from the screw hole 17 through the positioning groove 24, and extrude the reinforcement plug 20 from the inside of the telescopic slide groove 19 through the positioning ball 23. The reinforcement plug 20 can be inserted into the ground in the horizontal direction through the sharp corners, thereby reinforcing the position of the grounding body 5 in the earth, and at the same time ensuring that the length of the grounding body 5 inserted into the earth remains unchanged, so that the grounding body 5 can be stably grounded, thereby improving maintenance safety.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A down-lead grounding device for a power distribution overhead line, characterized in that: The invention comprises a hanging joint (1), wherein the hanging joint (1) is arranged in a "U" shape with the bayonet downward, the lower end of the hanging joint (1) is externally connected to a connecting seat (2), the lower end of the connecting seat (2) is connected to an insulating rod (3), the lower side of the left end of the hanging joint (1) is connected to a connecting ground wire (4), and the other end of the connecting ground wire (4) is connected to a grounding body (5).

2. A distribution overhead line down-lead grounding device according to claim 1, characterized in that: The inner walls of the left and right ends of the hanging joint (1) are both provided with limit sliding grooves (6), and the two limit sliding grooves (6) are both clamped with limit clamps (7), and the two limit clamps (7) are respectively slidably connected to the inside of the two limit sliding grooves (6), and the two limit clamps (7) are both protruding inside the "U" shape of the hanging joint (1) and can be completely retracted into the inside of the limit sliding groove (6).

3. A distribution overhead line down-lead grounding device according to claim 2, characterized in that: The limit clamp (7) is provided with spring grooves (8) on both upper and lower sides of one end of the interior of the hanging joint (1), and limit springs (9) are arranged inside the two spring grooves (8). The limit clamp (7) is elastically connected to the interior of the limit slide groove (6) through the two limit springs (9), and a plurality of limit clamping grooves (10) are provided on one end of the limit clamp (7) close to the interior of the hanging joint (1).

4. A distribution overhead line down-lead grounding device according to claim 1, characterized in that: A positioning slide groove (11) is provided inside the upper left end of the insulating rod (3), and the positioning slide groove (11) is clamped with a limiting slider (12) at both upper and lower ends, and the two limiting sliders (12) are slidably connected inside the positioning slide groove (11), and the left ends of the two limiting sliders (12) are connected to a winding clamp rod (13), and the two winding clamp rods (13) are both arranged in a "U" shape with an opening toward the insulating rod (3).

5. A distribution overhead line down-lead grounding device according to claim 4, characterized in that: The upper and lower ends of the winding clamp rod (13) are both sleeved with pull-out rollers (14), and the two pull-out rollers (14) are both rollingly connected to the outside of the winding clamp rod (13). A limit slide rod (15) is fixedly connected between the inner walls of the upper and lower ends of the adjustment slide groove (11), and the limit slide rod (15) passes through the inside of the two limit slide blocks (12) from top to bottom.

6. A distribution overhead line down-lead grounding device according to claim 5, characterized in that: The two limit sliders (12) are slidably connected to the outside of the limit slider (15), a tensioning spring (16) is arranged between the two limit sliders (12), and the inside of the adjustment slide groove (11) is elastically connected through the tensioning spring (16), and the tensioning spring (16) is sleeved on the outside of the limit slider (15).

7. A distribution overhead line down-lead grounding device according to claim 1, characterized in that: A screw hole (17) is inserted upwardly into the upper end of the grounding body (5), a bolt (18) is threadedly connected to the upper end of the screw hole (17), and a plurality of telescopic sliding grooves (19) are provided inside the lower side of the cylindrical outer wall of the grounding body (5), and the plurality of telescopic sliding grooves (19) are all connected to the inside of the screw hole (17).

8. A distribution overhead line down-lead grounding device according to claim 7, characterized in that: A reinforcing plug (20) is slidably connected inside the telescopic slide groove (19), and the reinforcing plug (20) can be completely retracted into the telescopic slide groove (19). The reinforcing plug (20) is arranged at a sharp angle at one end away from the screw hole (17), and the outer wall of the end close to the screw hole (17) is flush with the inner wall of the screw hole (17). The reinforcing plug (20) is fixedly connected to a limiting clamp (21) in the tangential direction of the grounding body (5).

9. A distribution overhead line down-lead grounding device according to claim 8, characterized in that: The reinforcing plug block (20) is clamped in the telescopic slide groove (19) via a limiting clamp plate (21); a contraction spring (22) is provided at one end of the limiting clamp plate (21) away from the screw hole (17); and the reinforcing plug block (20) and the limiting clamp plate (21) are elastically connected in the telescopic slide groove (19) via the contraction spring (22).

10. A distribution overhead line down-lead grounding device according to claim 9, characterized in that: An adjusting ball (23) is rollingly connected inside one end of the reinforcing plug (20) close to the screw hole (17), and the adjusting ball (23) is clamped inside the reinforcing plug (20); a plurality of adjusting rolling grooves (24) are clamped inside the lower side of the cylindrical outer wall of the screw hole (17), and the adjusting ball (23) is clamped inside the adjusting rolling grooves (24) and can roll between the outer wall of the screw hole (17) and the inside of the adjusting rolling grooves (24).

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