Small crawling ladder for offline

Abstract

The utility model discloses an off-line small ladder stand, which belongs to the technical field of line maintenance, and comprises a main body structure and a hook structure, the main body structure is composed of an insulating pedal and a first connecting belt; a second connecting belt and a third connecting belt are arranged at the top and the bottom of the insulating pedal respectively, and a tightener is arranged on the side, away from the first connecting belt, of the second connecting belt; the hook structure is composed of a connecting ring, a hook and a self-locking device, the connecting ring is arranged at the bottom of the inner side of the third connecting belt, and the hook is arranged at the bottom of the outer surface of the connecting ring. The offline small ladder stand has the advantages of being convenient to carry, simple in structure, high in strength, low in cost, light in weight, easy to operate, long in service life, easy and convenient to machine and the like, materials are easy to find, the offline small ladder stand is easy and convenient to machine, and when an operator climbs a tower, the hook is hung to a tower cross arm insulator hanging position, a main body structure is placed to a wire, and a maintainer climbs up and down. And the phenomenon that a maintainer steps on the umbrella skirt and the grading ring of the insulator during maintenance is avoided.

Description

Technical Field

[0001] This utility model relates to the field of line maintenance technology, and in particular to a small ladder for offline maintenance. Background Technology

[0002] Line maintenance refers to the work carried out on power transmission lines based on problems discovered during inspections, tests, and examinations. The aim is to eliminate defects, improve equipment health, prevent accidents, and ensure the safe operation of the lines. The importance of line maintenance is mainly reflected in the following aspects: preventing potential faults: regular maintenance can promptly identify and address these potential safety hazards, thereby avoiding power outages caused by sudden faults; extending equipment lifespan: regular maintenance not only helps identify potential problems but also allows for necessary maintenance and upkeep of equipment, slowing down its aging process and extending its lifespan, saving power companies significant replacement costs; improving system safety: power lines are a crucial component of the power system, and their safety directly affects the stable operation of the entire power system. Regular maintenance ensures the normal operation of the lines, thereby improving the overall safety of the power system.

[0003] During line maintenance, because the insulator strings of branch lines are nearly 3 meters long, maintenance personnel often step on the insulator skirts and equipotential rings when going down the line for maintenance, which often causes damage to the skirts and equipotential rings. This results in a reduction in the overall creepage distance of the insulator and uneven distribution of induced voltage at both ends of the insulator. This hidden danger can easily cause insulator flashover, breakdown, and grounding, leading to line tripping. In particular, tripping of important interconnecting lines can easily cause regional power supply imbalance, resulting in significant production losses. Utility Model Content

[0004] To address the problem of insulator skirts and equipotential rings being damaged by being stepped on during line maintenance, this utility model provides a small ladder for unloading lines. The technical solution is as follows:

[0005] The offline ladder includes a main structure and a hook structure. The main structure consists of insulated foot pedals and a first connecting strap.

[0006] The top and bottom of the insulated foot pedal are respectively provided with a second connecting strap and a third connecting strap, and a tensioner is provided on the side of the second connecting strap away from the first connecting strap;

[0007] The hook structure consists of a connecting ring, a hook, and a self-locking device. The connecting ring is located at the bottom of the inner side of the third connecting band, the hook is located at the bottom of the outer surface of the connecting ring, and the self-locking device is located on the inner side of the hook.

[0008] Preferably, the number of insulated foot pedals is several and they are all the same in size and shape, and the number of the first connecting straps is one less than the number of insulated foot pedals.

[0009] Preferably, the insulated foot pedal has a stepping part in the middle inside, and fixing holes are provided at the top and bottom inside the insulated foot pedal.

[0010] Preferably, the first connecting strip, the second connecting strip, and the third connecting strip are respectively disposed inside the corresponding fixing holes, and the plurality of insulated foot pedals are connected to each other through the fixing holes and the first connecting strip.

[0011] Preferably, the hook is movably connected to the third connecting band via a connecting ring, and the self-locking device includes a pin and a baffle. The pin is located inside the hook and extends to the outside of the hook at both ends. The baffle is located inside the hook and is connected to the two ends of the pin at both ends.

[0012] Preferably, the hook is provided with a torsion spring connected to the pin, and the side of the baffle near the pin has sufficient room for movement. The baffle abuts against the inside of the hook under the action of the torsion spring.

[0013] Preferably, the hook structure further includes an unlocking device, which consists of a pull tab and a pull rod. The pull tab is two in number and is respectively disposed on opposite sides of the outer surface of the baffle. The pull rod is disposed between the opposite sides of the pull tab.

[0014] Preferably, a locking bar that fits against the outer surface of the hook is provided between opposite sides of the unlocking device, and the positions of the pull tab and the stop plate correspond to each other.

[0015] It has the advantages of being easy to carry, having a simple structure, high strength, low cost, light weight, easy to operate, long service life, and easy to process.

[0016] Beneficial effects:

[0017] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0018] 1. This small ladder has the advantages of being easy to carry, simple in structure, high in strength, low in cost, light in weight, easy to operate, long in service life, and easy to process. In addition, the materials are easy to find and the processing is simple, which reduces the physical exertion of maintenance personnel, improves maintenance efficiency, and increases the personal safety of maintenance personnel.

[0019] 2. When using this small ladder, after the operator climbs the tower, the hook is attached to the suspension point of the insulator on the crossarm of the tower, and the main structure is placed at the conductor. The maintenance personnel can then go up and down from here, eliminating the phenomenon of maintenance personnel stepping on the insulator skirts and equipotential rings during maintenance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the small ladder for offline installation of this utility model;

[0022] Figure 2 This is a utility model of a small ladder. Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 3 This is a front view structural diagram of the small ladder that is part of this utility model.

[0024] In the diagram, 1. Insulated foot pedal; 2. First connecting belt; 3. Second connecting belt; 4. Tensioner; 5. Third connecting belt; 6. Connecting ring; 7. Hook; 8. Self-locking device; 9. Unlocking device. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] like Figure 1 and 3 As shown, the small ladder includes a main structure and a hook structure. The main structure consists of an insulated foot pedal 1 and a first connecting belt 2.

[0027] The top and bottom of the insulated foot pedal 1 are respectively provided with a second connecting belt 3 and a third connecting belt 5, and a tensioner 4 is provided on the side of the second connecting belt 3 away from the first connecting belt 2.

[0028] Specifically, there are several insulated foot pedals 1, all of the same size and shape. The number of first connecting straps 2 is one less than the number of insulated foot pedals 1. The number of insulated foot pedals 1 can be freely increased or decreased according to usage needs, making it more practical.

[0029] In addition, a stepping part is provided in the middle of the interior of the insulated foot pedal 1. Fixing holes are provided at the top and bottom of the interior of the insulated foot pedal 1. The first connecting strap 2, the second connecting strap 3 and the third connecting strap 5 are respectively provided inside the corresponding fixing holes. Several insulated foot pedals 1 are connected to each other through fixing holes and the first connecting strap 2.

[0030] In this embodiment, the fixing hole facilitates the installation of the first connecting strip 2 and prevents the first connecting strip 2 from accidentally falling off.

[0031] like Figure 1-2 As shown, the hook structure consists of a connecting ring 6, a hook 7, and a self-locking device 8. The connecting ring 6 is located at the bottom of the inner side of the third connecting band 5, the hook 7 is located at the bottom of the outer surface of the connecting ring 6, and the self-locking device 8 is located inside the hook 7. The hook 7 is movably connected to the third connecting band 5 through the connecting ring 6. The self-locking device 8 includes a pin and a baffle. The pin is located inside the hook 7 and both ends extend to the outside of the hook 7. The baffle is located inside the hook 7 and both ends are connected to the two ends of the pin.

[0032] It should be noted that the hook 7 has a torsion spring inside that is connected to the pin. The side of the baffle near the pin has enough room for movement. Under the action of the torsion spring, the baffle abuts against the inside of the hook 7.

[0033] In this embodiment, the self-locking device 8 enables the hook 7 to be automatically locked, thus enhancing security.

[0034] like Figure 1-2 As shown, the hook structure also includes an unlocking device 9, which consists of a pull tab and a pull rod. There are two pull tabs, which are respectively located on opposite sides of the outer surface of the baffle. The pull rod is located between the opposite sides of the pull tabs.

[0035] It should be noted that a locking bar is also provided on the opposite side of the unlocking device 9, which fits against the outer surface of the hook 7. The positions of the pull tab and the stop tab correspond to each other to avoid affecting the normal use of the hook 7 due to obstruction.

[0036] In this embodiment, the unlocking device 9 facilitates the opening of the self-locking device 8 and makes it convenient to use.

[0037] The method of using this utility model is as follows:

[0038] After the workers climb the tower, they hang the hook 7 at the insulator suspension point on the tower crossarm and place the insulated foot pedal 1 at the conductor. The maintenance personnel can then go up and down from there. By pulling the unlocking device 9, the self-locking device 8 can be moved, which can easily open the self-locking device 8.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A small ladder for offline use, characterized in that: include: The main structure and hook structure, wherein the main structure consists of an insulated foot pedal (1) and a first connecting strap (2); The top and bottom of the insulated foot pedal (1) are respectively provided with a second connecting strap (3) and a third connecting strap (5), and a tensioner (4) is provided on the side of the second connecting strap (3) away from the first connecting strap (2). The hook structure consists of a connecting ring (6), a hook (7) and a self-locking device (8). The connecting ring (6) is located at the bottom inside the third connecting band (5), the hook (7) is located at the bottom of the outer surface of the connecting ring (6), and the self-locking device (8) is located inside the hook (7).

2. The small ladder for unloading as described in claim 1, characterized in that, The number of insulated foot pedals (1) is several and they are all the same in size and shape. The number of the first connecting straps (2) is one less than the number of insulated foot pedals (1).

3. The small ladder for unloading according to claim 2, characterized in that, The insulating foot pedal (1) has a stepping part in the middle inside, and fixing holes are provided at the top and bottom inside the insulating foot pedal (1).

4. The small ladder for unloading according to claim 3, characterized in that, The first connecting strip (2), the second connecting strip (3) and the third connecting strip (5) are respectively disposed on the inner side of the corresponding fixing hole, and the plurality of insulating foot pedals (1) are connected to each other through the fixing hole and the first connecting strip (2).

5. The small ladder for unloading according to claim 1, characterized in that, The hook (7) is movably connected to the third connecting band (5) via the connecting ring (6). The self-locking device (8) includes a pin and a baffle. The pin is located inside the hook (7) and both ends extend to the outside of the hook (7). The baffle is located inside the hook (7) and both ends are connected to the two ends of the pin.

6. The small ladder for unloading according to claim 5, characterized in that, The hook (7) is equipped with a torsion spring connected to the pin. The side of the baffle near the pin has sufficient room for movement. The baffle abuts against the inside of the hook (7) under the action of the torsion spring.

7. The small ladder for unloading according to claim 6, characterized in that, The hook structure also includes an unlocking device (9), which consists of a pull tab and a pull rod. There are two pull tabs, which are respectively located on opposite sides of the outer surface of the baffle. The pull rod is located between the opposite sides of the pull tabs.

8. The small ladder for unloading according to claim 7, characterized in that, The unlocking device (9) is also provided with a locking bar that fits against the outer surface of the hook (7) on the opposite side, and the positions of the pull tab and the baffle are corresponding.

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