CN103532076A - Bird prevention boxes for electric transmission line - Google Patents

Abstract

The invention discloses a bird-proof box for a power transmission line, which is characterized in that the side-phase bird-proof box for filling the hanging points of the side-phase cross-arm insulators is arranged on the transmission iron tower above the side-phase insulators, and is located at the middle-phase insulator The middle-phase bird-proof box for filling the hanging point of the middle-phase cross-arm insulator is set above, and the side-phase bird-proof box and the middle-phase bird-proof box are triangular boxes made of epoxy resin plates. The invention can fully fill the hanging point of the cross-arm insulator which is very easy to nest with the bird-proof box, prevents birds from staying and nesting at the hanging point of the cross-arm insulator, improves the safety of the transmission line, reduces the maintenance rate, and is suitable for Various types of transmission line iron towers to prevent bird damage.

Description

Bird-proof box for transmission line

technical field

The invention belongs to the field of installation auxiliary facilities for overhead transmission lines, and relates to a bird protection device for transmission lines.

Background technique

Bird damage is one of the main reasons that threaten transmission lines, and the number of tripping accidents of transmission lines due to bird damage accounts for 1/4 of the total number of accidents every year. According to years of operating experience, birds like to inhabit and build nests at the cross-arm hanging points of overhead transmission line towers. Birds inhabit the hanging point of the cross-arm insulator. When they defecate, the bird droppings will short-circuit some insulators near the hanging point of the cross-arm insulator, resulting in insufficient electrical distance and flashover discharge grounding, causing the line to trip. The bird's nest at the hanging point has many weeds, branches and other sundries on it. These sundries are easy to be connected to the wire, causing a short circuit to the ground and causing a line trip accident.

However, conventional anti-bird thorns, anti-bird pads and other devices have a short anti-bird cycle, and birds will also perch on them. As for the sound and light anti-bird device, after the birds adapt to it, they will lose the anti-bird effect.

At present, many bird-proof boxes are made of non-insulating and non-corrosion-resistant materials such as galvanized iron sheets and plastics. The service life is short and the safety performance is not high. Moreover, the installation methods are fixed by screws or tied with iron wires, which is not conducive to line maintenance. method.

Contents of the invention

The present invention aims to overcome the deficiencies in the prior art and provide a bird-proof box for transmission lines with insulation and corrosion resistance, long service life and high safety performance. The box is fully filled to prevent birds from staying and nesting at the hanging points of the cross-arm insulators, improving the safety of transmission lines and reducing maintenance rates. It is suitable for preventing bird damage on various types of transmission line towers.

The present invention adopts following technical scheme for solving technical problems:

The present invention is a transmission line anti-bird box, which is applied on the transmission iron tower. The bird box is located above the middle phase insulator and is used to fill the hanging point of the middle phase cross-arm insulator. The bird-proof box of the side phase and the middle phase are made of epoxy resin plates Triangular box.

The characteristics of the anti-bird box for transmission lines of the present invention are also:

The fixed structure of the side-phase bird-proof box on the transmission tower is as follows: a fixed card seat is provided, and the fixed card seat is extended from the top of the "U"-shaped card and the "U"-shaped card to one side. The "F"-shaped structure is composed of connecting plates, the "U"-shaped card is fixed on the angle steel of the hanging point of the side-phase cross-arm insulator by bolts, and the connecting plate is fixed on the side-phase bird-proof box by rivets. bottom plate.

The fixing structure of the middle-phase bird-proof box on the transmission tower is as follows: a positioning seat is provided, and the positioning seat is composed of a "U"-shaped card welded with a screw hole on the top and a hinge piece welded with a connecting rod. The screw hole is set on the connecting rod to form a rotatable structure, and the "U"-shaped card with the bolt hole welded on the top is fixed on the angle steel at the hanging point of the middle-phase cross-arm insulator through fastening screws. The hinge sheet is fixed on one side bottom corner of the middle phase bird-proof box.

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

1. The present invention uses a triangular box structure that can well fit the shape of the crossarm at the hanging point of the crossarm insulator of the transmission tower, and fills the top of the hanging point of the crossarm insulator that is easy to build a nest, effectively preventing bird damage, and at the same time The use of epoxy resin boards solves the problems of ordinary bird-proof boxes that are not corrosion-resistant, non-insulated, and low in strength, and can prevent birds from perching and nesting at the hanging points of the cross-arm insulators for a long time.

2. The side-phase anti-bird box of the present invention is installed on the angle steel of the hanging point of the side-phase cross-arm insulator through the fixed bracket, and the side-phase bird-proof box can be removed by removing the bolts of the "U" type card for the inspection and maintenance of the transmission tower , Simple structure, easy installation.

3. The present invention forms a reversible structure on the middle-phase bird-proof box through the screw hole of the positioning seat and the connecting rod of the hinge piece, so that the whole middle-phase bird-proof box can be turned over and moved to one side during the inspection and maintenance of the iron tower, which is convenient for maintenance , little impact on maintenance work.

Description of drawings

Fig. 1 is a schematic diagram of the overall installation structure of the present invention;

Fig. 2 is a schematic diagram of the installation structure of the side-phase bird-proof box of the present invention;

Fig. 3 is a B-direction sectional view of Fig. 2;

Fig. 4 is a schematic diagram of the installation structure of the medium-phase bird-proof box of the present invention;

Fig. 5 is a schematic diagram of the connection structure of the middle-phase bird-proof box of the present invention;

Fig. 6 is a sectional view along the direction A of Fig. 5;

Labels in the figure: 1 transmission tower; 2a A-phase insulator; 2b B-phase insulator; 2c C-phase insulator; 3a left phase bird-proof box; 3b left middle-phase bird-proof box; Anti-bird box; 4 wires; 5 fixed card holder; 6 bolts; 7 angle steel for hanging point of side-phase cross-arm insulator; 8 rivets; 9 protective plate; 10 positioning seat; 11 screw hole; 12 connecting rod; 13 hinge; 14 fastening screws; 15 angle steel for hanging point of the middle-phase cross-arm insulator; 16 handles.

Specific Embodiments (Green indicates the supplementary description and explanation of the claims, which can be further refined)

In the specific implementation, as shown in Figure 1, a bird-proof box for transmission lines is applied on the hanging point of the cross-arm insulator of the transmission tower 1. The side-phase bird-proof boxes for the hanging points of the phase cross-arm insulators are located above the middle-phase insulators, and the middle-phase bird-proof boxes for filling the hanging points of the middle-phase cross-arm insulators are set. The color can be matched with the phase color of the line, which saves the trouble of hanging the phase plate. For example, the anti-bird boxes installed in different phases can adopt three different colors of "yellow, green and red" to correspond to the three phase colors of "ABC". It can prevent bird damage and can intuitively reflect the phase difference. In this embodiment, the bird-proof box 3a of the left phase is set in yellow, which is used to hang the hanging point space above the A-phase insulator 2a of the side-phase insulators; the middle-phase bird-proof box The box is set to green for hanging the middle phase insulator, that is, the hanging point space above the B-phase insulator 2b; the right phase bird-proof box 3c is set to red, and is used to hang the hanging point space above the C-phase insulator 3a in the side phase insulators.

In the specific implementation, the size of the box is determined according to the form and installation position of different types of pole towers. A triangular box made of connected rivets, that is, a wedge-shaped closed triangular prism structure.

As shown in Figure 2 and Figure 3, the fixed structure of the side-phase bird-proof box on the transmission tower 1 is as follows: a fixed card holder 5 is provided, and the fixed card holder 5 is formed by a "U"-shaped card and a top of the "U"-shaped card. The "F" type structure is formed by the connection plate extending to one side. The "U" type card is fixed on the angle steel 7 of the hanging point of the side-phase cross-arm insulator through the bolt 6, and the connection plate is fixed on the side-phase bird-proof box through the rivet 8. bottom of the bottom plate. In order to prevent the rivet 8 from directly bearing force with the epoxy resin board, a protective plate 9 can also be set at the bottom of the side-phase bird-proof box; the rivet 8 is fixed with the connecting plate through the protective plate 9, so as to prevent the epoxy resin board from directly bearing the force of the rivet for a long time Stress damages aging. When overhauling lead 4, unclamp bolt 6, just can move side phase anti-bird box, does not affect overhaul operation, after overhaul finishes, side phase anti-bird box is reset and gets final product.

As shown in Fig. 5 and Fig. 6, the fixed structure of the middle-phase bird-proof box on the transmission tower 1 is as follows: a positioning seat 10 is provided, and the positioning seat 10 is a "U"-shaped card welded with a screw hole 11 on the top and a welded The hinge piece 13 of the connecting rod 12 is composed of a screw hole 11 set on the connecting rod 12 to form a rotatable structure, and a nut is installed before and after the connecting rod 12 passes through the screw hole 11 to fix the position of the connecting rod 12. In order to prevent the connecting rod 12 from shaking too much left and right, it will affect the stability of the middle phase bird-proof box turning over. The "U"-shaped card with bolt holes 11 welded on the top is fixed on the angle steel 15 of the hanging point of the middle-phase cross-arm insulator through fastening screws 14, and the hinge 13 is fixed on one side bottom corner of the middle-phase bird-proof box.

In the specific implementation, as shown in Figure 4, in order to fully hang the middle phase insulator 2b, two middle phase bird-proof boxes need to be arranged symmetrically, namely the left middle-phase bird-proof box 3b and the right middle-phase bird-proof box 3b', and on the outside A handle 16 is installed on the inclined surface. By pulling the handle 16, the middle-phase bird-proof box can be turned over to both sides respectively, and the maintenance space above the hanging point of the B-phase insulator 2b can be released without removing the bird-proof box, so as to avoid dismantling the anti-bird box during maintenance. The bird box takes a lot of time and affects the maintenance efficiency.

Claims (3)

1. the anti-bird case of transmission line, to be applied on electric power pylon (1), it is characterized in that: on described electric power pylon (1), the top that is positioned at limit phase insulator is provided for filling up the mutually anti-bird case in limit of limit phase cross arm insulator hanging point, the top that is arranged in phase insulator (2b) is provided for filling up the mutually anti-bird case of phase cross arm insulator hanging point, and the mutually anti-bird case in described limit is the triangle box body of being made by epoxy resin sheet material with middle mutually anti-bird case.

2. the anti-bird case of transmission line according to claim 1, it is characterized in that: the fixed structure of the mutually anti-bird case in described limit on electric power pylon (1) is: a Fixing clamp-seat (5) is set, described Fixing clamp-seat (5) is to a side, to extend " F " type structure of the connecting plate formation arranging by the top of " U " type card and described " U " type card, described " U " type cartoon is crossed bolt (6), and to be fixed on the angle steel (7) of described limit phase cross arm insulator hanging point upper, and described connecting plate is fixed on the base plate of the mutually anti-bird case in described limit by rivet (8).

3. the anti-bird case of transmission line according to claim 1, it is characterized in that: the fixed structure of described middle mutually anti-bird case on electric power pylon (1) is: a positioning seat (10) is set, described positioning seat (10) has screw hole (11) " U " type card and the leaf of hinge (13) that is welded with connecting rod (12) to form by welded top, described screw hole (11) is sleeved on described connecting rod (12) above enough becomes turntable, described welded top has " U " type cartoon of bolt hole (11) to cross on the angle steel (15) that holding screw (14) is fixed on described middle phase cross arm insulator hanging point, described leaf of hinge (13) is fixed on a side base angle of described middle mutually anti-bird case.

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