CN103579983B - Bird preventing needle plate of electric transmission line - Google Patents

Abstract

The invention discloses a bird preventing needle plate of an electric transmission line. The bird preventing needle plate comprises a lower-layer insulation plate and an upper-layer insulation layer stacked mutually and fixedly connected with each other, wherein a plurality of bird preventing needles are vertically arranged on the board of the lower-layer insulation plate; U-shaped stop bases are fixed on the board of the upper-layer insulation plate; the opening directions of the U-shaped stop bases are perpendicular to the length directions of the bird preventing needles. The bird preventing needle plate of the invention is mounted above an insulator, uses the sharpness and coverage area of the bird preventing needles to force birds to not stop or even nest in the dangerous positions of towers to achieve the bird expelling purpose, and can be operated for a long time; an insulation base avoids possible short-circuit hidden dangers when dropping.

Description

Bird-proof needle plate for transmission line

Technical field:

The invention relates to a bird-proof pin plate for power transmission lines.

Background technique:

The towers of transmission lines are tall and stable, and many birds like to build nests and breed on them. Bird nests are often built in dangerous positions such as the suspension points of the tower insulator strings and the oblique intersections above the jumpers. When the following three situations occur, it will cause a line trip accident: (1) The nesting materials such as branches and iron wires sag or fall, and the insulator strings are short-circuited, and such faults are not easy to find; (2) Birds perched on the top of the tower Such feces fall to pollute the insulators, reduce the insulation level of the line, and accumulate to a certain extent to cause flashover, or short-circuit all or part of the insulators instantly when the feces fall. The frequency of such accidents is the highest; Take up the activity and spread the wings to short-circuit the insulator strings instantly. Every year, there will be a certain number of flashover trips caused by birds at home and abroad. The large-scale power outages in the United States and Canada in 2004 were caused by the flashover of bird droppings on high-voltage transmission lines, which caused tripping, causing system shocks and disconnection.

The main anti-bird measures currently taken are: (1) Install anti-bird thorns. The anti-bird thorn is the most commonly used bird-repelling device. It is umbrella-shaped, has a large expansion area, and has a large protective area for insulators. And it is difficult to disassemble after rusting, and there have been cases where birds nest directly on the bird-proof thorns; (2) Install a bird-proof windmill. The anti-bird windmill is mainly composed of a rotating reflective device and a bracket device made of metal or glass mirror. It rotates continuously under the action of the wind, and the mirror reflects light to drive birds and prevent birds from nesting and resting in dangerous parts of the line tower. However, in calm weather, the windmill cannot rotate, and thus loses its ability to repel birds. At the same time, field investigations found that after a period of installation, some of the rotating bearings were easily damaged, making it difficult to rotate or stop the windmill. (3) Install ultrasonic bird repellent. Powered by solar energy, once it senses the approach of birds, it will emit a warning sound to stimulate the birds to achieve the purpose of repelling birds. However, after using it for a period of time, the birds gradually get used to the warning sound, and it loses its function. In addition, increasing the insulator umbrella group, manually climbing poles to remove bird nests, etc. are also anti-bird measures. Although the above-mentioned methods have their own characteristics and have played a certain role, they all have certain drawbacks and cannot effectively prevent them. The occurrence of bird damage.

Invention content:

In order to overcome the defects of the prior art, the object of the present invention is to provide a bird-proof pin plate for transmission lines, which improves the corresponding shortcomings of the prior art, and installs the bird-proof pin plate of the present invention above the insulator, and uses its The sharpness and coverage area force birds to be unable to stay or even build nests in the dangerous position of the tower, so as to achieve the purpose of repelling birds, and can run for a long time. The insulating base also avoids the potential short circuit hazard that may exist when falling.

The present invention solves technical problem and adopts following technical scheme:

An anti-bird needle board for transmission lines, which includes: a lower insulating board and an upper insulating board that are overlapped with each other and fixedly connected, a plurality of anti-bird needles are vertically arranged on the board surface of the lower insulating board, and on the upper insulating board A U-shaped holder is fixed on the board, and the opening direction of the U-shaped holder is perpendicular to the length direction of the bird-proof needle.

The lower insulation board is fixedly connected to the upper insulation board by rivets.

Fasteners for fixing the bird-proof needle plate on the cross-arm of the pole and tower are provided, and the fasteners include: a plate-shaped clamping piece with a U-shaped cross section, in the middle of a free end of the clamping piece Bolts and nuts matching the bolts are fixedly connected; bolt holes matching the bolts are provided on the board surfaces of the lower insulation board and the upper insulation board.

A stainless steel band is also fixedly connected between the bolt and the free end of the clamping piece.

The cross-section of the large end of the anti-bird pin is trapezoidal, and a plurality of trapezoidal holes for assembling the anti-bird pin are arranged on the surface of the lower insulating board, and the large end of the trapezoidal hole faces toward the upper insulation board. side of the board.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

Both the upper insulating board and the lower insulating board of the present invention are made of insulating materials. Even if they fall off accidentally, no short circuit will be formed between the wire and the pole tower. It will rust, and the formed coverage area effectively protects the insulator below. The anti-bird effect is remarkable, effectively protecting the lower insulator; easy to disassemble and assemble, with insulation protection; it can run for a long time.

Description of drawings:

Figures 1A, 1B, and 1C are the front view, left view, and top view of the anti-bird needle plate; Figures 2A, 2B are the front view and top view of the fastener; Figures 2C, 2D are the front view and top view of another fastener .

Numbers in the figure: 1 upper insulation board, 2 lower insulation board, 3 bird-proof needle, 4 U-shaped holder, 5 rivet, 6 clamping piece, 7 bolt hole, 8 stainless steel strip, 9 bolt.

The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

detailed description:

Embodiment: Referring to Figs. 1A-1C, the anti-bird pin board for transmission lines of this embodiment includes: a lower insulating board 2 and an upper insulating board 1 that overlap each other and are fixedly connected, and are vertically arranged on the board surface of the lower insulating board 2 There are a plurality of anti-bird needles 3, and a U-shaped holder 4 is fixed on the surface of the upper insulation board 1. The U-shaped holder is used to fix the bird-proof needle board on the cross arm of the pole tower. The opening direction is perpendicular to the length direction of the bird-proof needle. In the specific setting, the number of anti-bird needles can be set to about 100, and the degree of density is appropriate to prevent birds from settling on the insulation board.

In the specific setting, the cross-section of the large end of the anti-bird needle is set as a trapezoid, and there are multiple trapezoidal holes for assembling the anti-bird needle on the surface of the lower insulating board, and a corresponding bird-proof needle is installed in each trapezoidal hole , the big end of the trapezoidal hole faces the side where the upper insulation board is located, the tip of the bird-proof needle passes through the upper insulation board, the big end falls into the trapezoidal hole of the insulation board, and then a lower insulation board is combined on the upper insulation board 2 , The two insulation boards are fixedly connected by rivets 5 .

In order to facilitate the fastening of the anti-bird needle plate on the cross-arm of the tower and ease of disassembly, as shown in Figure 2A-2B, a fastener for fixing the anti-bird needle plate on the cross-arm of the tower is provided, and the fastener includes: The cross-section is a U-shaped plate-shaped clip 6, and a bolt and a nut matching the bolt are fixedly connected to the middle part of a free end of the clip. This fastener is suitable for the case where the cross arm of the tower is an angle iron. Referring to Figures 2C-2D, there is also a stainless steel band 8 fixedly connected between the bolt and the free end of the clamping piece. This kind of fastener is suitable for the case where the cross arm of the tower is channel steel.

How to use:

Select the appropriate position of the cross arm of the pole tower above the insulator. If the tower material to be installed is an angle iron, put the needle point of the anti-bird needle plate upwards, and snap its U-shaped holder 4 into the horizontal part of the angle iron, and then insert the U-shaped The clamping piece 6 is clipped into the vertical part of the angle iron, and then the bolt 9 of the angle iron fastener is inserted into the bolt hole 7 of the bird-proof needle plate, and the bolt and nut are tightened to achieve fastening; if the installation tower material is channel steel , put the needle point of the anti-bird needle plate upwards, snap its U-shaped holder 4 into the upper horizontal part of the channel steel, and then snap the U-shaped clamping part of the channel steel fastener into the lower horizontal part of the channel steel, pass the stainless steel belt 8 The bolts of the channel steel fasteners are inserted into the fixing bolt holes 7 of the bird-proof needle plate, and the bolts and nuts are tightened to achieve fastening. The invention is convenient to assemble and disassemble, and at the same time, according to the required protection area, the number of bird-proof needle plates installed is selected. After the installation, the birds are forced to be unable to stay or even nest in the dangerous position of the tower, and can run for a long time, so as to achieve the purpose of long-term and effective bird repelling.

Claims (3)

1. The anti-bird pin board for power transmission lines is characterized in that it comprises: a lower insulating board (2) and an upper insulating board (1) overlapping each other and fixedly connected, and vertically arranged on the board surface of the lower insulating board (2). A plurality of anti-bird needles (3), on the board surface of the upper insulation board (1) is fixed with a U-shaped holder (4), the opening direction of the U-shaped holder is perpendicular to the opening of the bird-proof needle Longitudinal direction; Fasteners for fixing the bird-proof needle plate on the cross-arm of the pole and tower are provided, and the fasteners include: a plate-shaped clip (6) with a U-shaped cross section, one of the clips The middle part of the free end is fixedly connected with bolts and nuts matched with the bolts; the lower insulating plate and the upper insulating plate are provided with bolt holes (7) matched with the bolts. A stainless steel band (8) is also fixedly connected between the bolt and the free end of the clamping piece. 2. The anti-bird needle plate for transmission lines according to claim 1, characterized in that, the lower insulating plate (2) and the upper insulating plate (1) are fixedly connected by rivets (5). 3. The anti-bird needle plate for power transmission line according to claim 1, characterized in that, the big end cross-section of the bird-proof needle is trapezoidal, and a plurality of holes for assembling are arranged on the surface of the lower insulation board. The trapezoidal hole of the anti-bird needle, the big end of the trapezoidal hole faces the side where the upper insulation board is located.