Insulation ladder for electric power line maintenance

Abstract

The utility model relates to the field of electric power maintenance equipment, and discloses an insulating ladder for electric power circuit maintenance, which comprises two bearing columns, the rear sides of the two bearing columns are fixedly connected with fixing plates, one sides of the two fixing plates close to each other are fixedly connected with a plurality of pedals I, the tops of the front sides of the two bearing columns are fixedly connected with accommodating shells, and the accommodating shells are fixedly connected with the outer sides of the two bearing columns. And sliding assemblies are arranged on the sides, close to each other, of the two containing shells correspondingly, limiting plates are slidably connected into the two containing shells correspondingly, clamping columns are fixedly connected to the front sides of the two limiting plates correspondingly, and springs are arranged in the two containing shells correspondingly. According to the insulating ladder, the height of the insulating ladder can be quickly adjusted, so that a worker can adapt to devices with different heights according to requirements, and the insulating ladder has better flexibility when working at different heights. In addition, the insulating ladder is easy to store and carry due to the folding storage function, and the insulating ladder is more convenient to move to different positions when a worker needs to move to the different positions.

Description

Technical Field

[0001] This utility model relates to the field of power maintenance equipment, and in particular to an insulated ladder for power line maintenance. Background Technology

[0002] Insulated ladders are widely used in power line maintenance and inspection. Maintenance personnel can use insulated ladders to access high-voltage cables, transformers, utility poles, and other equipment for inspection, installation, replacement, or troubleshooting. Transmission towers are an important component of power transmission systems. Insulated ladders can be used to conveniently and safely perform maintenance work on transmission towers, such as inspection, insulator replacement, and line connections.

[0003] A search revealed Chinese Patent Publication No. CN208380490U, relating to the field of power maintenance equipment, which discloses a folding ladder for power maintenance. The ladder includes a base, a support plate, a step, a locking disc, and a folding shaft. An insulating plate is positioned above the base, and the support plate is positioned above the insulating plate. A load-bearing rod is located on the inner side of the support plate, passing through the support plate and connecting to an adjusting block. A slide rail is located on the outer side of the support plate, and a locking block is located inside the slide rail, passing through the slide rail and connecting to the load-bearing rod. The advantages are: a more rational structural design, foldable and portable, easy to move, simple folding method, small size, lighter weight, and easier to carry. It can reach damaged power lines promptly, effectively ensuring timely and effective power line maintenance. It is more practical, suitable for power line maintenance at various heights, suitable for large-scale promotion and use, has lower manufacturing costs, higher cost-effectiveness, and stronger structural stability.

[0004] The aforementioned patent embodiment describes that "the folding ladder is fixed to the external support position by the locking plate 8, the limiting shaft 10 is connected to the hook 7 by the knob 9, the locking plate 8 fixes the folding ladder in the area that needs maintenance, and the worker steps on the step bar 6 to complete the maintenance work. The worker can adjust the position of the locking block 14 in the slide rail 5 to adjust the gap of the load-bearing rod 15. Through the cooperation of the locking block 14 and the adjusting block 13, the load-bearing rod 15 is locked to the support plate 3, thereby adapting to the use of workers of different heights." The aforementioned patent describes that the worker can adjust the locking block so that the load-bearing rod is locked to the support plate by the cooperation of the locking block and the adjusting block, thereby adjusting the height of the folding ladder to adapt to the use of workers of different heights. However, the process of adjusting the height of the device in the above structure is too cumbersome, which is not conducive to the worker's quick maintenance of the power line, and may lead to the power line being unable to be restored to use. Therefore, in view of the above-mentioned shortcomings, a new type of insulated ladder for power line maintenance is proposed. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an insulated ladder for power line maintenance, which aims to improve the problem of overly cumbersome process when adjusting the height of the device in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An insulated ladder for power line maintenance includes two support columns. A fixing plate is fixedly connected to the rear side of each support column. Multiple footboards are fixedly connected to adjacent sides of the fixing plates. A receiving shell is fixedly connected to the top front side of each support column. A sliding assembly is provided on adjacent sides of each receiving shell. A limit plate is slidably connected inside each receiving shell. A locking post is fixedly connected to the front side of each limit plate. A spring is provided inside each receiving shell. A pulling rod is fixedly connected to adjacent sides of each locking post. A pulling plate is fixedly connected to adjacent sides of each pulling rod. A sliding post is slidably connected inside each support column. Multiple sliding holes are provided on the front side of each support column. A locking groove is provided on the front side of each sliding post. Multiple footboards are fixedly connected to adjacent sides of each sliding post.

[0008] Furthermore, the sliding assembly includes two sliding holes, one of which is located on the right side of one of the receiving shells, and the other is located on the left side of the other receiving shell. The exterior of both pull rods is slidably connected to the interior of the two sliding holes.

[0009] Furthermore, a fixing block is fixedly connected to the top of each of the two sliding columns, and an extension plate is detachably installed on the top of each of the two sliding columns. Multiple pedals are fixedly connected to the adjacent side of the two extension plates, and studs are threaded to both ends of the opposite side of the two extension plates. Bolts are threaded to the external threads of the studs.

[0010] Furthermore, one end of the spring is fixedly connected to the rear side of the limiting plate, and the other end of the spring is fixedly connected to the front inner wall of the receiving shell.

[0011] Furthermore, the front sides of both engagement posts engage with the interior of one of the engagement slots, and the front sides of both engagement posts are slidably connected to the interior of one of the sliding holes.

[0012] Furthermore, the front sides of the two engaging posts are slidably connected to the interiors of the two receiving shells, wherein a portion of the exterior of the second pedal contacts the interior of the two supporting posts.

[0013] Furthermore, the bottom inner wall of the extension plate is in contact with the outside of the fixing block, and the outside of the stud is in contact with the outside of the extension plate.

[0014] Furthermore, the outer side of the bolt contacts the outer side of the extension plate, and the outer side of the stud sequentially penetrates the bottom of the extension plate and the middle of the fixing block, extending outward.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, through the cooperation of structures such as the supporting column, fixing plate, step one, sliding hole one, receiving shell, sliding hole two, and limiting plate, the height of the insulated ladder can be quickly adjusted, allowing workers to adapt to devices at different heights as needed, providing better flexibility when working at different heights. Furthermore, the folding storage function makes the insulated ladder easy to store and carry, making it more convenient for workers to move to different locations.

[0017] 2. In this utility model, the total length of the ladder can be adjusted through the cooperation of a fixing block, studs, bolts, extension plates, and footboards. When the ladder is insufficient in length, an extension plate can be added to the top, allowing the device to adapt to equipment maintenance work at different heights. This enables workers to perform safe and efficient work at various heights without needing ladders of different heights. Attached Figure Description

[0018] Figure 1 This is a perspective view of the insulated ladder for power line maintenance proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the sliding hole structure of the insulating ladder for power line maintenance proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the housing shell structure of the insulated ladder for power line maintenance proposed in this utility model.

[0021] Legend:

[0022] 1. Support column; 2. Fixing plate; 3. Pedal 1; 4. Sliding hole 1; 5. Receiving shell; 6. Sliding hole 2; 7. Limiting plate; 8. Engaging column; 9. Pull rod; 10. Pulling plate; 11. Spring; 12. Sliding column; 13. Engaging groove; 14. Pedal 2; 15. Fixing block; 16. Stud; 17. Bolt; 18. Extension plate; 19. Pedal 3; 20. L-shaped groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-3 An embodiment of this utility model provides an insulated ladder for power line maintenance, comprising two support columns 1, with fixed plates 2 fixedly connected to the rear sides of both support columns 1, thereby providing support for the fixed plates 2. Multiple footboards 3 are fixedly connected to adjacent sides of the two fixed plates 2, thereby providing support for the footboards 3. Receiving shells 5 are fixedly connected to the top front sides of both support columns 1, and sliding components are provided on adjacent sides of the two receiving shells 5. The sliding components include two sliding holes 6, one of which is located on the right side of one receiving shell 5 and the other on the left side of the other receiving shell 5. The exterior of two pulling rods 9 are slidably connected to the interior of the sliding holes 6, and the sliding holes 6 are provided with L-shaped slots 20 for the pulling rods 9 to be inserted.

[0025] This allows the pull rod 9 to slide along the trajectory of the sliding hole 6. Both housing shells 5 are slidably connected to limit plates 7, and both limit plates 7 are fixedly connected to their front sides with locking pins 8. When the locking pins 8 move, they cause the limit plates 7 to slide inside the housing shells 5. Both housing shells 5 are equipped with springs 11. Pull rods 9 are fixedly connected to adjacent sides of the two locking pins 8, causing the locking pins 8 to move when the pull rods 9 move. Pull plates 10 are fixedly connected to adjacent sides of the two pull rods 9, and pulling the pull plates 10 causes the pull plates 10 to move the pull rods 9. Sliding pins 12 are slidably connected to the interiors of both bearing pins 1, allowing the sliding pins 12 to slide along the trajectory inside the bearing pins 1.

[0026] Multiple sliding holes 4 are provided on the front side of the bearing column 1, and engaging grooves 13 are provided on the front side of both sliding columns 12. Multiple pedals 14 are fixedly connected to the adjacent side of the two sliding columns 12, so that the sliding column 12 can provide support for the pedals 14. One end of the spring 11 is fixedly connected to the rear side of the limiting plate 7, and the other end of the spring 11 is fixedly connected to the front inner wall of the receiving shell 5, so that the limiting plate 7 will compress the spring 11 when it moves. The front side of both engaging columns 8 engages with the inside of one of the engaging grooves 13.

[0027] Thus, the locking post 8 can fix the sliding post 12 in a specific position of the device by engaging with the inside of the locking groove 13. The front sides of the two locking posts 8 are slidably connected to the inside of one of the sliding holes 4. The front sides of the two locking posts 8 are respectively slidably connected to the inside of the two receiving shells 5. The outside of part of the second pedal 14 is in contact with the inside of the two supporting posts 1.

[0028] like Figure 1 and Figure 2 As shown: a fixing block 15 is fixedly connected to the top of each of the two sliding columns 12. An extension plate 18 can be detachably installed on the top of each of the two sliding columns 12. Multiple pedals 19 are fixedly connected to the adjacent side of the two extension plates 18, so that the extension plates 18 can provide support for the pedals 19. The front and rear ends of the opposite side of the two extension plates 18 are threaded with studs 16. Bolts 17 are threaded to the outside of the studs 16. The bottom inner wall of the extension plate 18 is in contact with the outside of the fixing block 15.

[0029] The outside of the stud 16 contacts the outside of the extension plate 18, and the outside of the bolt 17 contacts the outside of the extension plate 18. The outside of the stud 16 passes through the bottom of the extension plate 18 and the middle of the fixing block 15 in sequence, and extends outward, so that the extension plate 18 can be fixed to the outside of the fixing block 15 through the cooperation of the stud 16 and the bolt 17.

[0030] Compared to some existing technologies, the above-described features enable the insulated ladder to be quickly adjusted in height during use, allowing workers to adapt to equipment at different heights and providing greater flexibility when working at varying heights. Furthermore, the folding storage function makes the insulated ladder easy to store and carry, facilitating movement to different locations and allowing for adjustment of the ladder's total length. When the ladder is insufficient, an extension plate 18 can be added to the top, further adapting the device to equipment maintenance work at different heights. This allows workers to perform safe and efficient work at various heights without the need for ladders of different heights.

[0031] Working principle: When the device needs to be used, the pull plate 10 can be pulled, causing the pull rod 9 to move inside the sliding hole 2 6. The pull rod 9, in turn, causes the locking column 8 to slide inside the receiving shell 5. The locking column 8, in turn, causes the limiting plate 7 to slide inside the receiving shell 5. The limiting plate 7, in turn, compresses the spring 11, causing the locking column 8 to disengage from one of the locking grooves 13. Then, the pull rod 9 is rotated circumferentially around the receiving shell 5 into the L-shaped slot 20. The operator can then free their hands to pull the pedal 2 14. Pulling the pedal 2 14 causes the sliding column 12 to move inside the bearing column 1, thus raising the pedal 2 14 and changing the height of the device. Then, the pull rod 9 is rotated in the opposite direction circumferentially around the receiving shell 5 from the L-shaped slot. The device disengages from the slot 20, then releases the pull plate 10. Under the reset force of the spring 11, the limiting plate 7 moves to reset. When the limiting plate 7 moves to reset, it drives the engaging column 8 to reset, allowing the engaging column 8 to re-engage with the other engaging slot 13. This allows the sliding column 12 to remain fixed in a specific position on the device, thus enabling the height of the device to be adjusted. When the length of the device is insufficient, an extension plate 18 can be added to the top of the two sliding columns 12, so that the interior of the two extension plates 18 contacts the exterior of the fixing block 15. Then, the stud 16 is rotated so that the exterior of the stud 16 passes through the bottom of the extension plate 18 and the middle of the fixing block 15 in sequence. Then, the bolt 17 is rotated so that the fixing block 15 and the bolt 17 cooperate to fix the extension plate 18, thereby increasing the total length of the device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An insulated ladder for power line maintenance, comprising two load-bearing columns (1), characterized in that: A fixing plate (2) is fixedly connected to the rear side of each of the two supporting columns (1). A plurality of pedals (3) are fixedly connected to the adjacent side of the two fixing plates (2). A receiving shell (5) is fixedly connected to the top front side of each of the two supporting columns (1). A sliding component is provided on the adjacent side of each of the two receiving shells (5). A limiting plate (7) is slidably connected inside each of the two receiving shells (5). A locking column (8) is fixedly connected to the front side of each of the two limiting plates (7). A locking column (8) is provided inside each of the two receiving shells (5). A spring (11) is provided. Pull rods (9) are fixedly connected to the adjacent sides of the two locking columns (8). Pull plates (10) are fixedly connected to the adjacent sides of the two pull rods (9). Sliding columns (12) are slidably connected inside the two bearing columns (1). Multiple sliding holes (4) are opened on the front side of the bearing column (1). Locking grooves (13) are opened on the front side of the two sliding columns (12). Multiple pedals (14) are fixedly connected to the adjacent sides of the two sliding columns (12).

2. The insulated ladder for power line maintenance according to claim 1, characterized in that: The sliding assembly includes two sliding holes (6), one of which is located on the right side of one of the receiving shells (5), and the other is located on the left side of the other receiving shell (5). The exterior of both pull rods (9) is slidably connected to the interior of the sliding holes (6). The sliding holes (6) are provided with L-shaped slots (20) for the pull rods (9) to be inserted.

3. The insulated ladder for power line maintenance according to claim 1, characterized in that: The top of each of the two sliding columns (12) is fixedly connected to a fixing block (15), and the top of each of the two sliding columns (12) can be detachably provided with an extension plate (18). Multiple pedals (19) are fixedly connected to the adjacent side of the two extension plates (18), and studs (16) are threadedly connected to the front and rear ends of the opposite side of the two extension plates (18). Bolts (17) are threadedly connected to the external threads of the studs (16).

4. The insulated ladder for power line maintenance according to claim 1, characterized in that: One end of the spring (11) is fixedly connected to the rear side of the limiting plate (7), and the other end of the spring (11) is fixedly connected to the front inner wall of the receiving shell (5).

5. The insulated ladder for power line maintenance according to claim 1, characterized in that: The front sides of both locking posts (8) engage with the interior of one of the locking grooves (13), and the front sides of both locking posts (8) are slidably connected to the interior of one of the sliding holes (4).

6. The insulated ladder for power line maintenance according to claim 1, characterized in that: The front sides of the two engagement posts (8) are slidably connected to the interiors of the two receiving shells (5), wherein the exterior of part of the second pedal (14) is in contact with the interior of the two supporting posts (1).

7. The insulated ladder for power line maintenance according to claim 3, characterized in that: The bottom inner wall of the extension plate (18) is in contact with the outside of the fixing block (15), and the outside of the stud (16) is in contact with the outside of the extension plate (18).

8. The insulated ladder for power line maintenance according to claim 3, characterized in that: The outside of the bolt (17) is in contact with the outside of the extension plate (18), and the outside of the stud (16) passes through the bottom of the extension plate (18) and the middle of the fixing block (15) in sequence, and extends outward.

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