Overhanging insulator chain climbing assist device for ultra-high voltage power transmission line

Abstract

The utility model discloses an extra-high voltage power transmission line suspension type insulator chain climbing assistor which comprises at least one suspension type insulator chain climbing assistor unit, and each insulator chain climbing assistor unit comprises a left climbing plate (11), a right climbing plate (13), a movable screw rod (15) and a manual locking nut (16). Wherein the movable screw rod (15) is connected with the left climbing plate (11) through the pin shaft (14); the left climbing plate (11) and the right climbing plate (13) are hinged through a bolt (12) to form a pincerlike structure; the device has the advantages of being small in size, light in weight and convenient to carry, having no requirement for the form of a suspension insulator chain, and reducing potential safety hazards of operators.

Description

Technical Field

[0001] This patent relates to a high-voltage transmission line maintenance tool, and in particular to an ultra-high-voltage transmission line suspension insulator string climbing aid. Background Technology

[0002] Suspension insulator strings are common in ultra-high voltage (UHV) transmission lines. Their function is to support the conductors, provide insulation, effectively isolate the electrical connection between the conductors and the towers, prevent current from flowing through the insulator strings and grounding, and ensure the safe operation of the high-voltage power system. Their structure includes combinations of "V" and "human" shapes. During long-term operation, the insulators may experience a decline in insulation performance or breakage, affecting the insulation performance of the insulator strings. Therefore, maintenance personnel must regularly inspect, clean, and replace the insulators in the suspension insulator strings of transmission lines. General maintenance methods include... Figure 1 As shown, maintenance personnel start from one end of conductor 4, stepping on insulator strings 2 one by one to inspect them until they reach the last insulator connected to tower 3. The plane of insulator string 2 is small, making it difficult for operators to stand steadily. Especially in winter, when snow or ice accumulates on insulator string 2, it is easy for people to slip and fall, posing a significant safety hazard. Summary of the Invention

[0003] The purpose of this patent is to design a climbing aid for suspension insulator strings of ultra-high voltage transmission lines, which allows maintenance personnel to carry the climbing aid with them to perform inspections and maintenance along the insulator strings.

[0004] The technical solution of this patent is: a suspension insulator string climbing aid for ultra-high voltage transmission lines, characterized in that: it includes at least one independently usable suspension insulator string climbing aid unit; each suspension insulator string climbing aid unit includes a left climbing plate, a right climbing plate, a screw, and a manual locking nut; the left and right climbing plates are connected by a central bolt to form a clamp-like structure, and the clamp jaws are arc-shaped; the left climbing plate has a protruding part, and the center of the end of the protruding part has a through hole; the right climbing plate is provided with an opening slot, and the center of each end of the slot has a threaded hole and a smooth hole respectively; after the left and right climbing plates are closed, they are locked by the movable screw and the manual nut; the arc shape of the clamp jaws is adapted to the diameter of the insulator steel cap, and the length of the climbing plate is adapted to the skirt of the insulator;

[0005] The advantages of this patent are: small size, light weight, and easy to carry. Maintenance personnel only need to carry it with them to climb along the suspension insulator string for maintenance. There are no requirements for the form of the suspension insulator string, making it suitable for any working condition. It improves detection efficiency and power supply reliability, enhances the safety of workers, and greatly reduces the labor intensity of front-line personnel. It can also complete maintenance work on both live and de-energized lines. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 is a schematic diagram of a maintenance work site;

[0007] Figure 2 is a front view of a suspension type insulator string climbing aid unit structure;

[0008] Figure 3 is a bottom view of a suspension type insulator string climbing aid unit structure;

[0009] Figure 4 is a front view of a left climbing board structure;

[0010] Figure 5 is a front view of a right climbing board structure;

[0011] Figure 6 is a top view of a left climbing board structure;

[0012] Figure 7 is a top view of a right climbing board structure;

[0013] In the figure, 11 is a left climbing board; 12 is a bolt; 13 is a right climbing board; 14 is a pin shaft; 15 is a movable screw rod; 16 is a hand-operated locking nut; and 2 is an insulator string. DETAILED DESCRIPTION

[0014] The present patent will be described in detail below in combination with the accompanying drawings and specific embodiments;

[0015] As Figures 2 to 7 shown in the present patent is a suspension type insulator string climbing aid for an extra-high voltage transmission line, which includes at least one suspension type insulator string climbing aid unit. According to the climbing length of the suspension type insulator string, the suspension type insulator string climbing aid unit can be several or multiple, each of which is independent and can be used alone. Each suspension type insulator string climbing aid unit includes a left climbing board 11, a right climbing board 13, a movable screw rod 15 and a hand-operated locking nut 16. The movable screw rod 15 is connected to the left climbing board 11 through a pin shaft 14. The left climbing board 11 and the right climbing board 13 are hingedly connected through a bolt 12 to form a pincer structure.

[0016] The left climbing board 11 is arc-shaped at one end, with a flat platform on one side of the arc. The flat platform has a slot and a hinge hole on the side. The other end is a flat surface with a raised anti-slip boss. The flat surface is concave, and the two sides form protrusions to prevent the feet from sliding outward. The movable screw 15 is a flat connecting plate with a hinge hole at one end. The right climbing board 13 is arc-shaped at one end, with a flat platform on one side of the arc. The flat platform has a slot and a right concave platform on one side. The other end is a flat surface with a raised anti-slip boss. The flat surface is concave, and the two sides form protrusions to prevent the feet from sliding outward.

[0017] When using, such as Figure 1 As shown, maintenance personnel carry multiple climbing aid units according to the required climbing height of the suspension insulator string 2. They descend from the tower 3 to the conductor 4 via insulating ropes or other tools. They wrap the left and right climbing plates of the suspension insulator string climbing aid units around the suspension insulator string 2, and tighten the manual locking nut 16 by hand to firmly grip the clamps on the suspension insulator string 2. They then climb the suspension insulator string 2 from bottom to top, securing the climbing aid units to each insulator to form a climbing ladder. They then climb the ladder to perform maintenance from bottom to top. During the return process after maintenance, they remove each suspension insulator string climbing aid unit from top to bottom, completing the maintenance.

Claims

1. A climbing aid for extra-high voltage transmission line suspension insulator strings, characterized in that: The utility model discloses a climbing aid device for overhead line maintenance, which comprises at least one climbing aid unit for overhead line maintenance, and each climbing aid unit comprises a left climbing board (11), a right climbing board (13), a movable screw rod (15) and a hand locking nut (16). The utility model discloses a climbing aid device for overhead line maintenance, which comprises at least one climbing aid unit for overhead line maintenance, and each climbing aid unit comprises a left climbing board (11), a right climbing board (13), a movable screw rod (15) and a hand locking nut (16).

2. The EHV power transmission line suspension insulator string climbing aid of claim 1, wherein: The left climbing board (11) and the right climbing board (13) are provided with right convex anti-skid bosses on the climbing planes.

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