CN203481420U - Grounding wire device used for power transmission line overhauling - Google Patents

Abstract

The utility model discloses a grounding wire device used for power transmission line overhauling, which comprises a grounding hook and a grounding clamp which is connected to the grounding hook through a lead, wherein the grounding hook is bent into a top end straight part and a lower part hook part by a plate, a clamping plate is arranged between the top end straight part and the lower part hook part, the middle position of the clamping plate is fixedly connected with a pull rod, the upper end of the pull rod passes through a pull rod hole formed in the top end straight part of the grounding hook and is connected with a pull rope through a pull rope ring, parts of the clamping plate on two sides of the pull rod are respectively fixed and connected with a bolt, the upper end of each bolt passes through a screw hole formed in the top end straight part of the grounding hook and is fixed by a nut, and bolts arranged between the clamping plate and the top end straight part of the grounding hook are sleeved with springs; the middle part on the front side of the clamping plate is connected with a hanger, and the middle part on the front side of the top end straight part of the grounding hook is provided with a clamping groove matched with the hanger; and the pull rod arranged between the clamping plate and the top end straight part of the grounding hook is embedded with a hanging buckle. The grounding wire device has the advantages of good anti-dropping performance, strong application flexibility and the like.

Description

Ground wire device for transmission line maintenance

technical field

The utility model relates to a grounding wire device used for maintenance of power transmission lines, which belongs to the technical field of electric power maintenance protection tools.

Background technique

The transmission line of the power system fails and needs to be shut down for maintenance. An important protective measure for power outage maintenance is to install a grounding wire to ensure that maintenance personnel are protected from electric shock during the maintenance process. Existing grounding wire usually adopts the clamp clip that is connected with the ground to hang on the circuit conductor of power failure. Because the contact between the clamp and the line conductor is not firm, it is easy to be disturbed by wind and other factors and cause it to fall off. In addition, the vertical distance between the horizontal bar on the UHV line tower and the line conductor is relatively long, resulting in the installation and removal of the clamp. difficulty.

Utility model content

The purpose of the utility model is to provide a grounding wire device which is convenient for installation and dismantling, and has good anti-off effect, and is used for maintenance of power transmission lines.

Its technical solution is: a grounding wire device for maintenance of power transmission lines, including a grounding hook and a grounding card connected to the grounding hook through a wire, characterized in that the grounding hook is bent by a plate into a flat top part There are two parts, the lower hook and the lower hook, which are similar to the "C" structure. There is a splint between the straight part of the top of the ground hook and the hook part, and a tie rod is fixed at the center of the splint. The upper end of the tie rod passes through the top of the ground hook and is straight. Part of the pull rod hole is connected with the pull rope through the pull rope ring. The splints on both sides of the pull rod are respectively fixed with bolts. The bolts between the straight parts at the top are set with springs; the center part of the front side of the splint is connected with a hook, and the center part of the front side of the straight part at the top of the grounding hook is provided with a card slot that matches the hook; the top of the splint and the grounding hook are straight The drawbars are built into the drawbars between the sections.

Its technical effect is: the device uses the tension of the spring on the bolt between the splint and the straight part of the top of the grounding hook and the splint connected by the manual pull rod, which can conveniently control the splint that cooperates with the hook part of the grounding hook to realize the alignment of the line. The wrapping and clamping or loosening of the wires has the characteristics of easy installation and disassembly, firm contact between the grounding hook and the line wires, good detachment resistance, and strong use flexibility. It is suitable for power outage maintenance operations of transmission lines with voltage levels of 110kV and above.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a side view of Fig. 1;

FIG. 3 is a top view of FIG. 1 .

Detailed ways

As shown in FIGS. 1-3 , a grounding wire device for power transmission line maintenance includes a grounding hook 3 and a grounding clip 34 connected to the grounding hook through a wire 33 . The grounding hook 3 is bent from a plate into two parts, a straight top part and a lower hook, which are in an approximate "C" shape. A splint 7 is arranged between the straight part 31 at the top of the grounding hook and the hook part, and a tie rod 1 is fixedly connected to the center of the splint. Rope 8 connects, and the clamping plate on pull bar both sides is fixedly connected with bolt 2 respectively, and the upper end of bolt passes the screw hole that grounding hook top straight part offers, is fixed by nut. A spring 5 is sleeved on the bolt between the splint and the straight part at the top of the grounding hook. The center part of the front side of the splint is connected with a hook 6, and the center part of the front side of the straight part of the top of the grounding hook is provided with a card slot 32 for matching with the hook; the pull rod between the splint and the straight part of the top of the grounding hook is embedded with a hook 4.

When in use, use the insulating stay rope 8 to pull the pull rod 1, so that the hook 6 on the splint 7 is engaged with the draw-in groove 32 on the straight part of the grounding hook top, and the grounding card 34 is fixed on the pole tower material; then the insulating stay rope is lowered, Make the hook part of the grounding hook 3 hook the wire from the bottom of the line wire, gently tighten the insulating pull rope to drive the pull rod up, so that the hook on the splint is detached from the card slot on the straight part of the top of the grounding hook, and set it on the flat top of the grounding hook. The spring 5 on the bolt 2 between the straight part and the splint, under the action of the tension, quickly springs the splint and presses down, so that the line wire is wrapped and clamped between the splint and the hook part of the grounding hook, and the purpose of preventing it from falling off is achieved. After the operation is completed, pull the pull rod to make the buckle 4 rise through the hole of the pull rod, relax the pull rod so that the buckle is automatically clamped on the upper end surface of the straight part of the top of the ground hook, so that the splint is loosened and separated from the line wire, and the ground hook hook Under the action of gravity, part of the ground wire can be removed from the line wire to complete the removal.

Claims (1)

1. the grounding wire device for power transmission lines overhauling, comprise ground connection hook and be connected to the grounding clamp on ground connection hook by wire, it is characterized in that: described ground connection hook (3) is top straight portion and bottom crotch two parts by plate bending, be approximate " C " type structure, between ground connection hook top straight portion (31) and crotch part, be provided with clamping plate (7), place, clamping plate middle position is connected with pull bar (1), the tie rod hole that pull bar upper end is offered through ground connection hook top straight portion, by stay cord ring, be connected with stay cord (8), on the clamping plate on pull bar both sides, be connected with respectively bolt (2), the screw that the upper end of bolt is offered through ground connection hook top straight portion, by nut, fixed, on bolt between clamping plate and ground connection hook top straight portion, be set with spring (5), position placed in the middle, clamping plate front side is connected with hook (6), and position placed in the middle, straight portion front side, ground connection hook top offers and links up with the draw-in groove (32) coordinating, on pull bar between clamping plate and ground connection hook top straight portion, be embedded with and buckle (4).

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