Foreign matter removing and anti-flashover device for power overhead line and using method thereof

Abstract

The invention discloses an electric power overhead line foreign matter removing and anti-flashover device and a using method thereof in the technical field of electric power system power transmission and distribution overhead line operation and maintenance, a cleaning assembly can continuously clean foreign matters attached to the surface of a high-voltage line when a first support and a second support walk, and manual cleaning is not needed; when an obstacle exists in the front, the second support supports the first support, then the first support crosses the obstacle, and when the second support crosses the obstacle, the first support can support the second support; the high-voltage wire cleaning device is simple in structure, does not need to stay for many times in the midway and manually adjust the position of the whole device when cleaning the high-voltage wire, and when crossing an obstacle, the first bracket and the second bracket completely cross the obstacle, and the high-voltage wire is clamped through the clamping group, so that support is provided, the application range is wider, and the practicability is higher. And the flashover prevention and short-circuit fault prevention operation and maintenance level of the overhead line is fundamentally improved.

Description

Technical Field

[0001] The present invention relates to the technical field of operation and maintenance of overhead transmission and distribution lines in power systems, and particularly to a device for removing foreign objects and preventing flashover on overhead power lines and a method for using the same. Background Technique

[0002] The power system mainly includes five main links: "power generation, transmission, transformation, distribution, and utilization". Overhead transmission and distribution lines are the most extensive and widely distributed infrastructure links in the power system, and are the main "veins" constituting the power system. Overhead transmission and distribution lines are usually erected outdoors and often lack real-time manual detection and maintenance. Their safe and stable operation is an important part restricting the safety of the power system.

[0003] Overhead transmission and distribution lines exposed outdoors are often damaged by various floating objects, such as: bird nests, bird droppings, plastic bags blown by the wind, kites blown by the wind, floating foreign objects blown by the wind, etc. If not cleaned in time, it may cause problems such as phase-to-phase short circuits or overheating and ignition of the line. Currently, line maintenance personnel generally use methods such as bamboo poles, laser emitters, drones, live water flushing tools, or manual climbing for live work to clean foreign objects on transmission and distribution lines. Long-term operation and maintenance experience shows that the method of manually cleaning foreign objects attached to overhead transmission and distribution lines is not only inconvenient for cleaning foreign objects on overhead transmission and distribution lines but also easily causes local damage to the line. Moreover, for overhead conductors separated by spacer dampers, spacer discs and other spacer supports in the middle, existing fault cleaning devices cannot cross the spacer device. When encountering spacer obstacles, it is necessary for the staff to remove the entire device multiple times. In addition, when foreign objects are attached to the lightning protection wire, it often causes foreign object protrusions at the tip of the lightning protection wire, and the distortion of the electric field increases the probability of the lightning protection wire being struck by lightning, posing a great lightning hazard risk to the power line. And the foreign objects attached to the lightning protection wire also bring great challenges to the cleaning of foreign objects attached to the lightning protection wire due to its small wire diameter and large sag.

[0004] The above technical bottleneck problems discovered in operation and maintenance have led to low efficiency of existing foreign object removal devices for transmission and distribution lines and a relatively single applicable scenario, and they do not have wide applicability to transmission and distribution lines.

[0005] Based on this, the present invention designs a device for removing foreign objects and preventing flashover on overhead power lines and a method for using the same to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for removing foreign objects and preventing flashover on overhead power lines and a method for using the same to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present invention provides the following technical solution: A foreign object removal and anti - flashover device for overhead power lines, comprising a first bracket and a second bracket, wherein the first bracket and the second bracket are rotatably connected; the first bracket and the second bracket are symmetrically arranged; both the bottom of the first bracket and the second bracket are fixedly connected with two support members, and each support member is rotatably connected with two rollers. The first bracket and the second bracket are respectively fixedly connected with a first L - shaped rod and a second L - shaped rod. The first L - shaped rod and the second L - shaped rod are respectively fixedly connected with a first cylinder and a second cylinder. The top ends of the first cylinder and the second cylinder are both fixedly connected with a slide rod, and the top ends of the first cylinder and the second cylinder are respectively slidably connected with the second bracket and the first bracket. A first pressing rod and a second pressing rod are respectively arranged on one side of the first L - shaped rod and one side of the second L - shaped rod. The top of the first pressing rod is slidably connected with a first resisting rod; the first resisting rod is fixedly connected to the bottom of the first L - shaped rod and is inclined, and the second L - shaped rod is slidably connected with a second resisting rod, and the second resisting rod is fixedly connected to the second pressing rod; Both the bottom of the first pressing rod and the second pressing rod are fixedly connected with a limiting plate, and two clamping groups are arranged below the limiting plate. The first pressing rod and the second pressing rod are respectively used to control the clamping force of the two clamping groups on the distribution line, and the two clamping groups are symmetrically arranged with respect to the limiting plate; the clamping group is used to provide support when one of the first bracket or the second bracket crosses an obstacle. A cleaning component is arranged on one side of each of the first bracket and the second bracket. The two cleaning components have the same structure and are symmetrically arranged. The cleaning component is used to drive the first bracket and the second bracket to move, and the cleaning component can continuously clean the distribution line during the movement.

[0008] As a further solution of the present invention, the clamping group includes two fixing pieces and a limiting groove. Both of the two fixing pieces are fixedly connected with the support member, and two wedge - shaped blocks are respectively slidably connected to the two fixing pieces; both of the two wedge - shaped blocks are fixedly connected with a first spring for resetting, and the bottom ends of the two wedge - shaped blocks are respectively rotatably connected with a driving wheel and a driven wheel. The limiting groove is opened at the bottom of the limiting plate; two limiting members are fixedly connected to the inner wall of the limiting groove, and the two limiting members are respectively slidably connected with the two wedge - shaped blocks.

[0009] As a further solution of the present invention, the cleaning assembly includes two arc-shaped pieces and a double-axis motor; the double-axis motor is fixedly connected to the first bracket, the two arc-shaped pieces are respectively fixedly connected to the two support members, and the two arc-shaped pieces are rotatably connected to a cleaning ring; the two cleaning rings are fixedly connected to a second spring for resetting them, the inner walls of the cleaning rings are fixedly connected to a plurality of brushes, the two cleaning rings are meshed with toothed rods, the two toothed rods are jointly slid with a connecting plate, the connecting plate is fixedly connected between the two support members, the two toothed rods are fixedly connected to a connecting block, the two connecting blocks are jointly threaded with a bidirectional screw rod, the bidirectional screw rod is rotatably connected between the two support members, the bidirectional screw rod is fixedly connected to two first pulleys, the two output ends of the double-axis motor are fixedly connected to the second pulley, and the first pulley and the second pulley are both transmission-connected with a first belt; The two-way screw is fixedly connected to the two first bevel gears, the two first bevel gears are meshed with the second bevel gears, the two second bevel gears are fixedly connected to the third pulleys, the two third pulleys are rotatably connected to the two support members respectively, the two driving wheels are fixedly connected to the fourth pulleys, the two third pulleys and the two fourth pulleys are transmission-connected with the second belt, and the two support members are slidably connected to the tensioning wheel.

[0010] As a further solution of the present invention, the first pressure rod and the second pressure rod are both elastic telescopic rods.

[0011] As a further solution of the present invention, the first belt and the second belt are toothed belts.

[0012] As a further solution of the present invention, the connecting plate is T-shaped.

[0013] As a further solution of the present invention, the roller, the driving wheel and the driven wheel are all made of rubber.

[0014] A method for using the above-mentioned power overhead line foreign body removal and anti-flashover device, the method comprising the following steps: Step 1: When encountering an obstacle, the first bracket is separated from the high-voltage line, and then the second bracket moves forward so that the first bracket passes over the obstacle, and then the second bracket is separated from the high-voltage line again, so that the first bracket moves forward to drive the second bracket to pass over the obstacle; Step 2: When the first bracket or the second bracket is separated from the high-voltage wire, the clamping group can clamp and fix the high-voltage wire at the non-lifting position; Step 3: When the cleaning component is working, the outside of the high-voltage line can be continuously cleaned through the cleaning ring and the brush; Step 4: When the clamping group clamps the high-voltage wire, it can be moved by cleaning the components.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When the first bracket and the second bracket are walking, the cleaning component will continuously clean the foreign matters attached to the surface of the high-voltage wire, eliminating the need for manual cleaning, reducing the labor efficiency and potential safety hazards of workers. When encountering an obstacle ahead, the second bracket will support the first bracket, enabling the first bracket to cross the obstacle. When the second bracket crosses the obstacle, the first bracket can support the second bracket, ensuring that the entire device does not need to stop multiple times or be manually adjusted during the cleaning of the high-voltage wire. Moreover, when crossing the obstacle, the first bracket and the second bracket completely cross it, and the clamping group will clamp the high-voltage wire to provide support, expanding the scope of application and allowing continuous movement along the high-voltage wire, thereby improving the cleaning efficiency of the high-voltage wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the second bracket of the present invention; Figure 3 is a separation diagram of the wedge block and the limit plate of the present invention; Figure 4 is a rear view of the support member of the present invention; Figure 5 is a schematic diagram of the structure of the cleaning component of the present invention; Figure 6 is a schematic diagram of the structure of the cleaning ring and the arc-shaped piece of the present invention; Figure 7 is a schematic diagram of the structures of the first bracket and the second bracket of the present invention; Figure 8 is a schematic diagram of the structure of the sliding rod of the present invention; Figure 9 is a schematic diagram of the structures of the first resistance rod and the first pressing rod of the present invention; Figure 10 is a flow chart of the present invention.

[0017] In the drawings, the list of components represented by each reference numeral is as follows: 1. First support; 2. Second support; 3. Support member; 4. Roller; 5. First L-shaped rod; 6. Second L-shaped rod; 7. First cylinder; 8. Second cylinder; 9. First pressing rod; 10. Second pressing rod; 11. First resisting rod; 12. Second resisting rod; 13. Tensioning wheel; 14. Fixed plate; 15. Driving wheel; 16. Driven wheel; 17. First spring; 18. Wedge block; 19. Limiting plate; 20. Limiting groove; 21. Limiting member; 22. Biaxial motor; 23. Cleaning ring; 24. Tooth bar; 25. Connecting plate; 26. Connecting block; 27. Bidirectional lead screw; 28. First pulley; 29. Second pulley; 30. First belt; 31. First bevel gear; 32. Second bevel gear; 33. Third pulley; 34. Fourth pulley; 35. Second belt; 36. Arc-shaped piece; 37. Brush; 38. High-voltage wire; 39. Slide bar; 40. Second spring. Detailed implementation mode

[0018] Please refer to Figure 1-10 , the present invention provides a technical solution: a device for removing foreign objects and preventing flashover on an overhead power line, including a first support 1 and a second support 2, the first support 1 and the second support 2 are rotatably connected; the first support 1 and the second support 2 are symmetrically arranged; both the bottom of the first support 1 and the second support 2 are fixedly connected with two support members 3, and two rollers 4 are rotatably connected to the support members 3, the first support 1 and the second support 2 are respectively fixedly connected with a first L-shaped rod 5 and a second L-shaped rod 6, the first L-shaped rod 5 and the second L-shaped rod 6 are respectively fixedly connected with a first cylinder 7 and a second cylinder 8, the top ends of the first cylinder 7 and the second cylinder 8 are both fixedly connected with a slide bar 39, the top ends of the first cylinder 7 and the second cylinder 8 are respectively slidably connected with the second support 2 and the first support 1, a first pressing rod 9 and a second pressing rod 10 are respectively arranged on one side of the first L-shaped rod 5 and one side of the second L-shaped rod 6, the top of the first pressing rod 9 is slidably connected with a first resisting rod 11; the first resisting rod 11 is fixedly connected to the bottom of the first L-shaped rod 5 and is inclined, the second L-shaped rod 6 is slidably connected with a second resisting rod 12, and the second resisting rod 12 is fixedly connected with the second pressing rod 10; Both the bottom of the first pressing rod 9 and the second pressing rod 10 are fixedly connected with a limiting plate 19, and two clamping groups are arranged below the limiting plate 19, the first pressing rod 9 and the second pressing rod 10 are respectively used to control the clamping force of the two clamping groups on the distribution line, and the two clamping groups are symmetrically arranged with respect to the limiting plate 19; the clamping group is used to provide support for the other when one of the first support 1 or the second support 2 crosses an obstacle, and a cleaning component is arranged on one side of each of the first support 1 and the second support 2, the two cleaning components have the same structure and are symmetrically arranged, and the cleaning component is used to drive the first support 1 and the second support 2 to move and the cleaning component can continuously clean the distribution line when moving.

[0019] When the above solution is put into actual work, the two support members 3 are respectively located above the two high-voltage lines 38. The high-voltage lines 38 are located inside the support members 3. The clamping group will clamp the high-voltage lines 38 to provide stable support for the first support 1 and the second support 2. Then, the two cleaning components are started. When the cleaning components work, they will drive the first support 1 and the second support 2 to move forward along the high-voltage line 38 through the rollers 4. When moving, the cleaning components will continuously clean the foreign matters attached to the surface of the high-voltage line 38. When the staff observes the position of the support frame or the telegraph pole on the high-voltage line 38 where the first support 1 is moving, first, the two cleaning components are stopped. Then, the second cylinder 8 works. When the second cylinder 8 works, the second L-shaped rod 6 supports the second cylinder 8. Then, the second cylinder 8 extends to lift the first support 1. The slide bar 39 at the top end of the second cylinder 8 can limit the first support 1 when the first support 1 is lifted. When the first support 1 is lifted, it will rotate around the rotating shaft, and when the first support 1 rotates, it will drive the first L-shaped rod 5 and the second pressing rod 10 to rotate. When the second pressing rod 10 rotates, it drives the second resisting rod 12 to rotate. Because the second resisting rod 12 is inclined, when the second resisting rod 12 rotates, its end will slide inside the second L-shaped rod 6 and will pull up the second pressing rod 10 to a certain height when sliding. When the second pressing rod 10 is lifted upward, it will control the clamping group below it to release the clamping of the high-voltage line 38, so that the first support 1 can be separated from the high-voltage line 38; When the first support 1 rotates, it drives the first L-shaped rod 5 to rotate. When the first L-shaped rod 5 rotates, the first resisting rod 11 will follow the first L-shaped rod 5 to rotate. When the first resisting rod 11 rotates, its end will press down the first pressing rod 9. When the first pressing rod 9 is under pressure, it will control the clamping group below it to continuously increase the clamping force on the high-voltage line 38, so that when the first support 1 rotates, the second support 2 can be stably clamped above the high-voltage line 38, preventing the first support 1 and the second support 2 from falling off above the high-voltage line 38 due to insufficient support when the first support 1 is separated from the high-voltage line 38. After the first support 1 is separated from the high-voltage line 38, the cleaning component on the left side of the second support 2 is turned on. When the cleaning component on the left side of the second support 2 works, the second support 2 will continue to move forward through the rollers 4, but the first support 1 is in an upwardly tilted state. When the first support 1 tilts and the second support 2 continues to move forward, the first support 1 will directly cross the obstacles such as the support frame of the high-voltage line 38; After the first support 1 is completely on the left side of the obstacle, the second cylinder 8 expands and contracts to lower the first support 1 to reset to the initial position. When the first support 1 descends to the initial position, the clamping group under the second pressure rod 10 will continue to clamp the high-voltage wire with a small amplitude. When the first support 1 descends, the right end of the first L-shaped rod 5 will rise, and when rising, it will drive the first resistance rod 11 to slide along the first pressure rod 9 to the right. When the first resistance rod 11 slides to the right along the first pressure rod 9, it will drive the first pressure rod 9 to rise. When the first pressure rod 9 rises, the clamping group will gradually release the clamping force on the high-voltage wire 38. After the first support 1 is reset, the second support 2 is on the right side of the obstacle. At this time, the first cylinder 7 is started. When the first cylinder 7 works, the first L-shaped rod 5 supports the first cylinder 7, and the first cylinder 7 jacks up the second support 2. When the second support 2 is jacked up by the first cylinder 7, it will drive the second L-shaped rod 6, the first pressure rod 9 and the second resistance rod 12 to rotate. When the second resistance rod 12 rotates, it will drive the second pressure rod 10 to press down. When the second pressure rod 10 presses down, the clamping group below it will continuously increase the clamping force on the high-voltage wire 38, so that the first support 1 can be firmly clamped on the high-voltage wire 38; when the second support 2 rotates, the first resistance rod 11 rotates and its bottom end will resist the first L-shaped rod 5, so that the first pressure rod 9 rises. After the first pressure rod 9 rises, the clamping group below it will release the clamping on the high-voltage wire 38, so that the second support 2 can be separated from the high-voltage wire 38. After the second support 2 is separated from the high-voltage wire 38, the cleaning component on the side of the first support 1 drives the first support 1 to move forward, so that the second support 2 completely crosses the obstacle, and then the second cylinder 8 expands and contracts to reset the second support 2; When the first support 1 and the second support 2 are walking, the cleaning component will continuously clean the foreign matters attached to the surface of the high-voltage wire 38, eliminating the need for manual cleaning, reducing the labor efficiency and safety hazards of workers. When encountering an obstacle ahead, the second support 2 supports the first support 1, and then enables the first support 1 to cross the obstacle. When the second support 2 crosses the obstacle, the first support 1 can support the second support 2, so that it is not necessary to stop multiple times midway and manually adjust the position of the entire device during the cleaning of the high-voltage wire 38, nor is it necessary to manually remove it multiple times. Moreover, when crossing the obstacle, the first support 1 and the second support 2 completely cross it, with a wider scope of application, and can continuously walk along the high-voltage wire 38, thus improving the cleaning efficiency of the high-voltage wire 38.

[0020] As a further solution of the present invention, the clamping group includes two fixing pieces 14 and a limiting groove 20. Both of the two fixing pieces 14 are fixedly connected to the support member 3. Two wedge-shaped blocks 18 are respectively slidably connected to the two fixing pieces 14. Both of the two wedge-shaped blocks 18 are fixedly connected with a first spring 17 for resetting. The bottoms of the two wedge-shaped blocks 18 are respectively rotatably connected with a driving wheel 15 and a driven wheel 16. The limiting groove 20 is opened at the bottom of the limiting plate 19. Two limiting members 21 are fixedly connected to the inner wall of the limiting groove 20. The two limiting members 21 are respectively slidably connected to the two wedge-shaped blocks 18.

[0021] When the above clamping group is working, when the second cylinder 8 jacks up the first bracket 1, the first L-shaped rod 5 rotates following the first bracket 1. When the first L-shaped rod 5 rotates, it presses down the first pressing rod 9 through the first resisting rod 11. When the first pressing rod 9 is under pressure, it presses down the limiting plate 19. When the limiting plate 19 is pressed down, it descends along the two wedge-shaped blocks 18 and squeezes the two wedge-shaped blocks 18. The wedge-shaped blocks 18 will slide along the fixing pieces 14 and stretch the first spring 17, so that the two wedge-shaped blocks 18 drive the driving wheel 15 and the driven wheel 16 to approach the high-voltage wire 38, thereby clamping the high-voltage wire 38 by the driving wheel 15 and the driven wheel 16, so that when the first bracket 1 is separated from the high-voltage wire 38, the second bracket 2 can provide support for the first bracket 1 through the driving wheel 15 and the driven wheel 16. When the first bracket 1 and the second bracket 2 are not installed on the high-voltage wire 38, the staff needs to first control one of the first cylinder 7 and the second cylinder 8 to be opened, so that one of the first bracket 1 or the second bracket 2 is jacked up. When the first bracket 1 is jacked up by the second cylinder 8, the driving wheel 15 and the driven wheel 16 in the clamping group below it will expand in a direction away from the high-voltage wire 38. Then, the first bracket 1 is stuck on the high-voltage wire 38 through the expanded driving wheel 15 and driven wheel 16. Then, finally, the staff holds the jacked-up first bracket 1 by hand and then controls the second cylinder 8 to reset. After the second cylinder 8 resets, the driving wheel 15 and the driven wheel 16 in the clamping group of the first bracket 1 will clamp the high-voltage wire 38, thereby completing the fixation of the first bracket 1. Then, control the first cylinder 7 to clamp the second bracket 2 on the high-voltage wire 38 in the same way, thereby completing the installation.

[0022] As a further solution of the present invention, the cleaning assembly includes two arc-shaped pieces 36 and a dual-axis motor 22; the dual-axis motor 22 is fixedly connected to the first bracket 1, and the two arc-shaped pieces 36 are respectively fixedly connected to the two support members 3, and the two arc-shaped pieces 36 are rotatably connected to the cleaning ring 23; the two cleaning rings 23 are fixedly connected to the second spring 40 for resetting, and the inner walls of the cleaning rings 23 are fixedly connected to a plurality of brushes 37, and the two cleaning rings 23 are meshed with toothed rods 24, and the two toothed rods 24 are A connecting plate 25 is slidably connected together, and the connecting plate 25 is fixedly connected between the two supporting members 3. The two tooth rods 24 are fixedly connected with a connecting block 26. The two connecting blocks 26 are commonly threadedly connected with a bidirectional screw rod 27. The bidirectional screw rod 27 is rotatably connected between the two supporting members 3. The bidirectional screw rod 27 is fixedly connected with two first pulleys 28. Both output ends of the dual-axis motor 22 are fixedly connected with a second pulley 29. The first pulley 28 and the second pulley 29 are both transmission-connected with a first belt 30. The bidirectional screw 27 is fixedly connected to two first bevel gears 31, and the two first bevel gears 31 are meshed with second bevel gears 32, and the two second bevel gears 32 are fixedly connected to third pulleys 33, and the two third pulleys 33 are rotatably connected to the two support members 3 respectively, and the two driving wheels 15 are fixedly connected to fourth pulleys 34, and the two third pulleys 33 and the two fourth pulleys 34 are transmission-connected with second belts 35, and the two support members 3 are slidably connected to the tensioning wheel 13.

[0023] When the cleaning assembly is working, when the first bracket 1 and the second bracket 2 are installed on the high-voltage wire 38, the cleaning ring 23 is located outside the high-voltage wire 38, and the dual-axis motor 22 drives the bidirectional screw 27 to rotate through the first pulley 28, the second pulley 29 and the first belt 30 when working. When the bidirectional screw 27 rotates, it drives the two connecting blocks 26 and the toothed rod 24 to reciprocate. When the toothed rod 24 reciprocates, it meshes with the cleaning ring 23 and drives the cleaning ring 23 to rotate in the arc-shaped piece 36, and then the surface of the high-voltage wire 38 is cleaned by the brush 37. When the cleaning ring 23 rotates, it squeezes the second spring 40; the second spring 40 can drive the cleaning ring 23 to reset when the dual-axis motor 22 stops rotating, so that when the first bracket 1 or the second bracket 2 is clamped on the high-voltage wire 38 again after crossing the obstacle, the cleaning ring 23 can be directly outside the high-voltage wire 38; When the bidirectional lead screw 27 rotates, it drives the first bevel gear 31 to rotate. When the first bevel gear 31 rotates, it drives the second bevel gear 32 to rotate. When the second bevel gear 32 rotates, it drives the third pulley 33 to rotate. The third pulley 33 drives the driving wheel 15 to rotate through the second belt 35 and the fourth pulley 34. When the driving wheel 15 rotates, it clamps the high-voltage wire 38 and at the same time drives the first bracket 1 and the second bracket 2 to move forward. The tension pulley 13 can prevent the second belt 35 from loosening when the driving wheel 15 slides along the fixed piece 14.

[0024] As a further solution of the present invention, both the first pressure rod 9 and the second pressure rod 10 are elastic telescopic rods.

[0025] During the operation of the above solution, the elastic telescopic rod can buffer when the first resistance rod 11 and the second resistance rod 12 press down.

[0026] As a further solution of the present invention, the first belt 30 and the second belt 35 are toothed belts.

[0027] During the operation of the above solution, the toothed belt has greater friction when rotating, preventing the phenomenon of idling.

[0028] As a further solution of the present invention, the connecting plate 25 is in a T shape.

[0029] During the operation of the above solution, the T-shaped connecting plate 25 does not block the position of the first belt 30.

[0030] As a further solution of the present invention, the rollers 4, the driving wheel 15 and the driven wheel 16 are all made of rubber.

[0031] During the operation of the above solution, rubber has insulation properties and relatively large friction.

[0032] A method for removing foreign objects from a distribution line, the method comprising the following steps: Step 1: When encountering an obstacle, the first bracket 1 is separated from the high-voltage wire 38, and then the second bracket 2 moves forward so that the first bracket 1 can cross the obstacle. Then the second bracket 2 is separated from the high-voltage wire 38 again, so that the first bracket 1 moves forward to drive the second bracket 2 to cross the obstacle; Step 2: When the first bracket 1 or the second bracket 2 is separated from the high-voltage wire 38, the clamping group can clamp and fix the high-voltage wire 38 at a non-lifting position; Step 3: During the operation of the cleaning component, the outer part of the high-voltage wire 38 can be continuously cleaned through the cleaning ring 23 and the brush 37; Step 4: When the clamping group clamps the high-voltage wire 38, the cleaning component can move.

[0033] Working principle: Two support members 3 are respectively located above two high-voltage wires 38. The high-voltage wires 38 are located inside the support members 3. The high-voltage wires 38 are clamped by a clamping group to provide stable support for the first bracket 1 and the second bracket 2. Then, two cleaning components are started. When the cleaning components work, they will drive the first bracket 1 and the second bracket 2 to move forward along the high-voltage wire 38 through the rollers 4. When moving, the cleaning components will continuously clean the foreign matters attached to the surface of the high-voltage wire 38. When the staff observes the position of the support frame or the utility pole on the high-voltage wire 38 where the first bracket 1 is moving, first, the two cleaning components are stopped. Then, the second cylinder 8 works. When the second cylinder 8 works, the second L-shaped rod 6 supports the second cylinder 8. Then, the second cylinder 8 extends to lift the first bracket 1. The sliding rod 39 at the top end of the second cylinder 8 can limit the first bracket 1 when the first bracket 1 is lifted. When the first bracket 1 is lifted, it will rotate around the rotating shaft, and when the first bracket 1 rotates, it will drive the first L-shaped rod 5 and the second pressing rod 10 to rotate. When the second pressing rod 10 rotates, it drives the second resisting rod 12 to rotate. Because the second resisting rod 12 is inclined, when the second resisting rod 12 rotates, its end will slide inside the second L-shaped rod 6 and will pull up the second pressing rod 10 to a certain height when sliding. When the second pressing rod 10 is lifted upward, it will control the clamping group below it to release the clamping of the high-voltage wire 38, so that the first bracket 1 can be separated from the high-voltage wire 38; When the first bracket 1 rotates, it drives the first L-shaped rod 5 to rotate. When the first L-shaped rod 5 rotates, the first resisting rod 11 will follow the first L-shaped rod 5 to rotate. When the first resisting rod 11 rotates, its end will press down the first pressing rod 9. When the first pressing rod 9 is under pressure, it will control the clamping group below it to continuously increase the clamping force on the high-voltage wire 38, so that the second bracket 2 can be stably clamped above the high-voltage wire 38 when the first bracket 1 rotates, preventing the first bracket 1 and the second bracket 2 from falling off above the high-voltage wire 38 due to insufficient support when the first bracket 1 is separated from the high-voltage wire 38. After the first bracket 1 is separated from the high-voltage wire 38, the cleaning component on the left side of the second bracket 2 is started. When the cleaning component on the left side of the second bracket 2 works, the second bracket 2 will continue to move forward through the rollers 4, but the first bracket 1 is in an upward-tilting state. When the first bracket 1 tilts upward and the second bracket 2 continues to move forward, the first bracket 1 will directly cross obstacles such as the support frame of the high-voltage wire 38; After the first support 1 is completely on the left side of the obstacle, the second cylinder 8 expands and contracts to lower the first support 1 to reset it to the initial position. When the first support 1 descends to the initial position, the clamping group under the second pressure rod 10 will continue to clamp the high-voltage wire with a small amplitude. When the first support 1 descends, the right end of the first L-shaped rod 5 will rise, and when rising, it will drive the first resistance rod 11 to slide along the first pressure rod 9 to the right. When the first resistance rod 11 slides to the right along the first pressure rod 9, it will drive the first pressure rod 9 to rise. When the first pressure rod 9 rises, the clamping group will gradually release the clamping force on the high-voltage wire 38. After the first support 1 is reset, the second support 2 is on the right side of the obstacle. At this time, the first cylinder 7 is started. When the first cylinder 7 works, the first L-shaped rod 5 supports the first cylinder 7, and the first cylinder 7 jacks up the second support 2. When the second support 2 is jacked up by the first cylinder 7, it will drive the second L-shaped rod 6, the first pressure rod 9 and the second resistance rod 12 to rotate. When the second resistance rod 12 rotates, it will drive the second pressure rod 10 to press down. When the second pressure rod 10 presses down, the clamping group below it will continuously increase the clamping force on the high-voltage wire 38, so that the first support 1 can be firmly clamped on the high-voltage wire 38; when the second support 2 rotates, the first resistance rod 11 rotates and its bottom end will resist the first L-shaped rod 5, so that the first pressure rod 9 rises. After the first pressure rod 9 rises, the clamping group below it will release the clamping of the high-voltage wire 38, so that the second support 2 can be separated from the high-voltage wire 38. After the second support 2 is separated from the high-voltage wire 38, the cleaning component on the side of the first support 1 drives the first support 1 to move forward, so that the second support 2 completely crosses the obstacle, and then the second cylinder 8 expands and contracts to reset the second support 2; When the first support 1 and the second support 2 are walking, the cleaning component will continuously clean the foreign matters attached to the surface of the high-voltage wire 38, without manual cleaning, reducing the labor efficiency and safety hazards of manual work. When encountering an obstacle ahead, the second support 2 supports the first support 1, and then makes the first support 1 cross the obstacle. When the second support 2 crosses the obstacle, the first support 1 can support the second support 2, so that it is not necessary to stop many times in the middle and manually adjust the position of the whole device when cleaning the high-voltage wire 38, and it is not necessary to take it off manually many times. Moreover, when crossing the obstacle, the first support 1 and the second support 2 completely cross it, with a wider scope of application, and can continue to walk along the high-voltage wire 38, thus improving the cleaning efficiency of the high-voltage wire 38.

Claims

1. A foreign object removal and flashover prevention device for overhead power lines, comprising a first bracket (1) and a second bracket (2), characterized in that: The first bracket (1) and the second bracket (2) are rotatably connected; the first bracket (1) and the second bracket (2) are symmetrically arranged; both the bottoms of the first bracket (1) and the second bracket (2) are fixedly connected with two support members (3), and two rollers (4) are rotatably connected to each of the support members (3). The first bracket (1) and the second bracket (2) are respectively fixedly connected with a first L-shaped rod (5) and a second L-shaped rod (6). The first L-shaped rod (5) and the second L-shaped rod (6) are respectively fixedly connected with a first cylinder (7) and a second cylinder (8). The tops of the first cylinder (7) and the second cylinder (8) are both fixedly connected with a sliding rod (39). The tops of the first cylinder (7) and the second cylinder (8) are respectively slidably connected to the second bracket (2) and the first bracket (1). A first pressing rod (9) and a second pressing rod (10) are respectively arranged on one side of the first L-shaped rod (5) and one side of the second L-shaped rod (6). The top of the first pressing rod (9) is slidably connected with a first resisting rod (11); the first resisting rod (11) is fixedly connected to the bottom of the first L-shaped rod (5) and is inclined. The second L-shaped rod (6) is slidably connected with a second resisting rod (12), and the second resisting rod (12) is fixedly connected to the second pressing rod (10). Both the bottoms of the first pressing rod (9) and the second pressing rod (10) are fixedly connected with a limiting plate (19). Two clamping groups are arranged below the limiting plate (19). The first pressing rod (9) and the second pressing rod (10) are respectively used to control the clamping force of the two clamping groups on the power distribution line. The two clamping groups are symmetrically arranged with respect to the limiting plate (19); the clamping groups are used to provide support for one of the first bracket (1) or the second bracket (2) when it crosses an obstacle. Cleaning components are arranged on one side of each of the first bracket (1) and the second bracket (2). The two cleaning components have the same structure and are symmetrically arranged. The cleaning components are used to drive the first bracket (1) and the second bracket (2) to move, and the cleaning components can continuously clean the power distribution line during the movement.

2. The foreign object removal and flashover prevention device for overhead power lines according to claim 1, wherein: The clamping group includes two fixing pieces (14) and a limiting groove (20). Both of the two fixing pieces (14) are fixedly connected to the support member (3). Two wedge-shaped blocks (18) are respectively slidably connected to the two fixing pieces (14); both of the two wedge-shaped blocks (18) are fixedly connected with a first spring (17) for resetting. The bottoms of the two wedge-shaped blocks (18) are respectively rotatably connected with a driving wheel (15) and a driven wheel (16). The limiting groove (20) is formed at the bottom of the limiting plate (19); two limiting members (21) are fixedly connected to the inner wall of the limiting groove (20), and the two limiting members (21) are respectively slidably connected to the two wedge-shaped blocks (18).

3. The foreign object removal and flashover prevention device for overhead power lines according to claim 2, wherein: The cleaning assembly comprises two arc-shaped pieces (36) and a double-axis motor (22); the double-axis motor (22) is fixedly connected to the first bracket (1); the two arc-shaped pieces (36) are respectively fixedly connected to the two support members (3); the two arc-shaped pieces (36) are rotatably connected to a cleaning ring (23); the two cleaning rings (23) are fixedly connected to a second spring (40) for resetting the cleaning rings (23); the inner walls of the cleaning rings (23) are fixedly connected to a plurality of brushes (37); the two cleaning rings (23) are meshed with a toothed rod (24); the two toothed rods (24) are slidably connected to a toothed rod (24) for resetting the cleaning rings (23); A plate (25), wherein the connecting plate (25) is fixedly connected between the two supporting members (3), the two toothed rods (24) are fixedly connected with a connecting block (26), the two connecting blocks (26) are commonly threadedly connected with a bidirectional screw rod (27), the bidirectional screw rod (27) is rotatably connected between the two supporting members (3), the bidirectional screw rod (27) is fixedly connected with two first pulleys (28), the two output ends of the dual-axis motor (22) are fixedly connected with a second pulley (29), and the first pulley (28) and the second pulley (29) are both transmission-connected with a first belt (30); The bidirectional screw rod (27) is fixedly connected to two first bevel gears (31), the two first bevel gears (31) are meshed with a second bevel gear (32), the two second bevel gears (32) are fixedly connected to a third belt pulley (33), the two third belt pulleys (33) are rotationally connected to the two support members (3), the two driving wheels (15) are fixedly connected to a fourth belt pulley (34), the two third belt pulleys (33) and the two fourth belt pulleys (34) are transmission-connected with a second belt (35), and the two support members (3) are slidably connected to a tensioning wheel (13).

4. The foreign object removal and flashover prevention device for overhead power lines according to claim 1, characterized in that: The first pressure rod (9) and the second pressure rod (10) are both elastic telescopic rods.

5. The foreign object removal and flashover prevention device for overhead power lines according to claim 3, characterized in that: The first belt (30) and the second belt (35) are toothed belts.

6. The foreign object removal and flashover prevention device for overhead power lines according to claim 3, characterized in that: The connecting plate (25) is T-shaped.

7. A foreign object removal and flashover prevention device for an overhead power line according to claim 2, characterized in that: The roller (4), the driving wheel (15) and the driven wheel (16) are all made of rubber.

8. A method for using the foreign object removal and flashover prevention device for overhead power lines according to any one of claims 1-8, characterized in that, The method comprises the following steps: Step 1: When encountering an obstacle, the first bracket (1) is separated from the high-voltage line (38), and then the second bracket (2) moves forward so that the first bracket (1) passes over the obstacle, and then the second bracket (2) is separated from the high-voltage line (38), so that the first bracket (1) moves forward and drives the second bracket (2) to pass over the obstacle; Step 2: When the first bracket (1) or the second bracket (2) is detached from the high-voltage wire (38), the clamping group can clamp and fix the high-voltage wire (38) in the non-lifting position; Step 3: When the cleaning assembly is in operation, the cleaning ring (23) and the brush (37) can be used to continuously clean the exterior of the high-voltage wire (38); Step 4: When the clamping assembly is clamped on the high-voltage wire (38), it can be moved by cleaning the assembly.

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