Lead backup protection device for live replacement of 66kV power transmission line strain single-string insulator

Abstract

The utility model relates to the technical field of power construction, in particular to a lead backup protection device for live replacement of a 66kV power transmission line strain single-string insulator. The rear end of the wire clamp is movably connected with a joint rod with electrical insulation performance, the joint rod is movably connected with a pull rod with electrical insulation performance, the pull rod is movably connected with a tightener, the tightener is movably connected with an angle steel unilateral tightener, and the angle steel unilateral tightener is connected with angle steel on an iron tower cross arm. The angle steel single-side tightener is arranged, the requirement for tensile force generated by the cross arm single-side angle steel and a wire which are conducted through a pull rod and the tightener can be well met, and the produced angle steel single-side tightener has the advantages of being light in weight, high in strength, flexible to operate, easy to operate, long in service life and not prone to damage.

Description

Technical Field

[0001] This utility model relates to the field of power construction technology, and in particular to a backup protection device for live replacement of tension single-string insulator conductors of 66kV transmission lines. Background Technology

[0002] In recent years, with the accelerated pace of urban construction and the rapid growth of urban electricity consumption, the service life of transmission lines has been increasing, leading to frequent occurrences of damage, aging, and spontaneous explosions of hardware and insulators. During live-line replacement of tension single-string insulators on 66kV transmission lines, if tools break or slip, the conductor may pull out or even separate from the tower, endangering the lives of workers on the tower. In live-line replacement of tension single-string insulators, conductor slippage can easily cause personal injury to workers. Currently, there are no protective measures to prevent conductor slippage and detachment, posing a significant safety hazard during the operation. If a tool breaks, causing conductor slippage and separation from the tower, a personal injury accident may occur. Therefore, existing tools cannot provide comprehensive protection for workers during live-line replacement of tension single-string insulators on 66kV transmission lines, creating a safety hazard for live-line work. On-site solutions are needed to address how to eliminate safety hazards during live-line work and the lack of backup protection. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a backup protection device for live-line replacement of tension single-string insulator conductors on 66kV transmission lines, thereby improving the safety and reliability of tools used in live-line work.

[0004] The technical solution of this utility model is: a backup protection device for replacing 66kV transmission line tension single-string insulator conductors under live conditions. It includes a clamp connected to the transmission conductor, a joint rod with electrical insulation properties movably connected to the rear end of the clamp, a pull rod with electrical insulation properties movably connected to the pull rod, a tensioner movably connected to the tensioner, a single-sided angle steel tensioner movably connected to the angle steel on the crossarm of the tower.

[0005] The above plan also includes:

[0006] The angle steel single-sided tightener is a U-shaped hook rod, with a set screw for fixing on one side of the hook head.

[0007] The main material of the joint rod and pull bar is epoxy resin with electrical insulation properties.

[0008] The advantages of this utility model are: 1. The single-sided angle steel tensioner can effectively meet the tensile force requirements of the single-sided angle steel and conductor on the crossarm through the pull rod and tensioner. The resulting single-sided angle steel tensioner is lightweight, high-strength, and flexible in operation. It is also easy to operate, has a long service life, and is not easily damaged. 2. The development of this device solves the problem of how to eliminate safety hazards during live-line work and the lack of backup protection.

[0009] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the tensioner structure. Detailed Implementation

[0012] See Figure 1 , 2 The component names are as follows: 1. Wire clamp, 2. Joint rod, 3. Pull bar, 4. Wire tensioner, 5. Angle steel single-sided tensioner, 6. Set screw, 7. Bolt.

[0013] See Figure 1 , 2 The backup protection device for replacing the tension single-string insulator conductor of a 66kV transmission line under live-line conditions includes, in sequence, a clamp 1 connected to the transmission conductor, an electrically insulating joint rod 2, an electrically insulating pull rod 3, a tensioner 4, and an angle steel single-sided tightening device 5. The angle steel single-sided tightening device 5 is connected to the angle steel on the crossarm of the tower. The clamp 1 connects to the conductor and uses its mechanical properties to firmly grip the outer conductor of the insulator. The angle steel single-sided tightening device 5 is a U-shaped hook rod with a set screw 6 on one side for fixing. This screw rod has a nut and its shape allows it to firmly engage with one side of the angle steel. After engaging, the tensioner tightens the connection, achieving a reliable connection with the crossarm. The joint rod 2 and pull rod 3 are mainly made of electrically insulating epoxy resin. A reliable connection is achieved through the movable joint using bolts 7. This device utilizes an alloy as the main material for the conductor clamp, leveraging its high strength and tensile strength to ensure that the conductor will not detach under the protection of the backup protection device during conductor handling. The tensioner 4 (screw), pull rod 3, and angle steel single-sided tensioner 5 are connected by detachable bolts. Tightening or loosening the tensioner 4 provides appropriate backup protection for tension insulator strings at different angles, ultimately achieving backup protection for the conductor when replacing single-string tension insulators on a 66kV transmission line under live-line conditions. The tensioner 4 is a commercially available product.

[0014] Instructions for use: The conductor end of the pull rod 3 is connected to the alloy clamp 1 via the movable joint and the joint rod 2. The clamp 1 tightly clamps the transmission conductor. The crossarm end of the pull rod 3 is connected in sequence to the tensioner 4 (screw) and the angle steel single-sided tensioner 5. The angle steel single-sided tensioner 5 is clamped on one side of the angle steel of the crossarm. Then, the screw of the tensioner 4 is used to tighten or loosen to achieve the purpose of tightening the pull rod 3. Therefore, it can be used as a backup protection when replacing the tension single string insulator conductor of a 66kV transmission line under live conditions to prevent the conductor from separating from the tower.

[0015] The above description is merely a specific embodiment of this utility model, and the various examples do not constitute a limitation on the substantive content of this utility model.

Claims

1. A backup protection device for live-line replacement of tension single-string insulator conductors on 66kV transmission lines, characterized in that... It includes a clamp (1) connected to the power transmission conductor, a joint rod (2) with electrical insulation properties movably connected to the rear end of the clamp (1), a pull rod (3) with electrical insulation properties movably connected to the joint rod (2), a tensioner (4) movably connected to the tensioner (4), a single-sided angle steel tensioner (5) movably connected to the crossarm of the iron tower.

2. The backup protection device for live replacement of tension single-string insulator conductors of 66kV transmission lines according to claim 1, characterized in that... The angle steel single-sided tightener (5) is a U-shaped hook rod with a set screw for fixing on one side of the hook head.

3. The backup protection device for live replacement of tension single-string insulator conductors of 66kV transmission lines according to claim 1 or 2, characterized in that... The main material of the joint rod (2) and the pull rod (3) is epoxy resin with electrical insulation properties.

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