Bird protection device for catenary poles

By installing a frustum-shaped cylindrical cover at the top of the contact wire pole, the problem of existing bird-proofing devices not being able to provide full coverage is solved, achieving full coverage, simplified installation, and reduced costs. It is suitable for the top of contact wire poles with small top rods, reducing the risk of birds perching and nesting.

CN224460971UActive Publication Date: 2026-07-07LANGFANG BEIRONG ELECTRIC

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LANGFANG BEIRONG ELECTRIC
Filing Date
2025-07-14
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing bird-proof devices cannot fully cover the top of the overhead contact line poles, and they are complicated to install, costly, and require frequent maintenance, which affects the safe operation of railway equipment.

Method used

Design a frustum-shaped cylindrical protective cover body made of weather-resistant rubber material. It is fixed to the top of the contact network pole with fastening bolts to form a wrap-around cover, which can accommodate small poles of different specifications. Add creases and supporting ribs to facilitate installation and improve structural strength.

Benefits of technology

It achieves full coverage of the top of the contact wire pole, reduces bird dwelling time, minimizes bird-related problems, simplifies the installation process, reduces costs, and improves the stability and adaptability of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a contact network pole upper enclosure type bird preventing device is set up in the pole main part top of contact network electric pole, including the shield main part, the shield main part is the prism platform cylinder shape and is provided with with small top pole adaptation's upper forming mouth in the top, the bottom port of shield main part is buckled on the pole main part top end face.
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Description

Technical Field

[0001] This utility model relates to the field of bird protection facilities technology, and in particular to a bird protection device for a contact wire pole. Background Technology

[0002] The overhead contact lines and poles along electrified railways provide ideal habitats for birds to roost and nest. However, debris such as twigs, fibers, and wires used by birds during nest building can fall onto the contact lines and cause short circuits between live parts and the grounding side, leading to equipment tripping and disrupting train operations. This risk is further amplified during rainy, snowy, and windy weather, as damp debris in nests is easily blown away. Installing bird-proof devices on poles and overhead contact line beams along railway lines can effectively prevent birds from approaching.

[0003] Along railway overhead contact line poles, a small, reduced-cross-section top post is typically installed at the center, on which overhead cables or monitoring equipment are mounted. However, the top surface of the pole, beyond the top post, has a large flat area that birds easily choose as a roosting and nesting spot. Commonly used bird deterrents include bird spikes, ultrasonic bird repellers, voice bird repellers, and laser bird repellers, all of which can effectively prevent birds from entering the equipment area to roost and nest. However, a single bird spike installed on the top surface of the pole is not ideal for bird deterrence because the small top post cannot provide complete coverage, and it can easily injure nearby birds. Ultrasonic bird repellers, voice bird repellers, and laser bird repellers all require power supplies and regular inspection and maintenance, resulting in high costs.

[0004] Therefore, it is necessary to develop a bird-proof enclosure device for contact wire poles to address the above-mentioned defects, which has become an urgent problem for those skilled in the art to solve. Utility Model Content

[0005] The purpose of this invention is to provide a bird-proof enclosure for contact network poles, suitable for the top of contact network poles with small top rods, to reduce the number of birds that stay there and decrease bird-related problems.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a bird-proof protective device for contact wire poles, which is installed at the top of the main body of the contact wire pole and includes a protective cover body. The protective cover body is in the shape of a frustum cylinder and has an upper forming opening at the top that is adapted to a small top rod. The bottom port of the protective cover body is fastened to the top end face of the main body of the pole.

[0008] Furthermore, it also includes fastening bolts. The main body of the cover is a four-sided frustum cylinder. The main body of the cover is symmetrically divided into two cover half blocks along the diagonal side. The oblique side of the cover half block is folded outward to provide a flange. The flange has multiple bolt holes for the fastening bolts to pass through.

[0009] Furthermore, the inner sidewall of the protective cover half-piece has an upper fold line parallel to the top edge, the upper fold line is recessed and the side length here is adapted to the outer wall of the small top rod of another specification.

[0010] Furthermore, a lower stop bar is provided parallel to the bottom edge of the inner sidewall of the protective cover half-piece. The lower stop bar is protruding and its bottom surface is horizontal. The bottom surface of the lower stop bar can abut against the edge of the top plate of the rod body.

[0011] Furthermore, the inner sidewall of the protective cover half-piece is provided with a second lower stop bar parallel to the bottom edge and the first lower stop bar. The second lower stop bar is protruding and its bottom surface is horizontal. The bottom surface of the second lower stop bar can abut against the edge of the top plate of the rod body of another specification.

[0012] Furthermore, vertical support ribs are provided on the inner sidewall of the protective cover half-block, and the vertical support ribs are protruding and arranged vertically.

[0013] Furthermore, the cross-sections of both the first and second lower stop bars are triangular.

[0014] Furthermore, the protective cover half-piece is specifically made of a weather-resistant rubber material.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model discloses a bird-proof enclosure for overhead contact line poles. By installing a frustum-shaped protective cover at the top of the pole body, it can completely cover the area at the top of the pole body, excluding the bottom surface of the small top rod. This creates a steeply angled slope on the outer wall, preventing birds from nesting or perching. This bird-proof enclosure for overhead contact line poles is suitable for the top of overhead contact line poles with small top rods, reducing bird dwelling time and minimizing bird-related problems.

[0017] Furthermore, by using two face-to-face interlocking protective cover halves to form the main body of the cover, installation is not only easier and less difficult, but also easier to process and shape, reducing the manufacturing difficulty of the protective cover halves mold. The addition of creases allows for flexible adaptation to the specifications of the small top rods on the poles on site, facilitating flexible assembly. The addition of lower stop strips one and two at the bottom of the inner wall of the protective cover halves allows for flexible adaptation to pole bodies of different specifications, reducing on-site installation difficulty and facilitating stable installation. The addition of vertical support ribs on the inner wall of the protective cover halves increases the structural strength of the protective cover halves, reducing the likelihood of dents. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the installation state of the bird-proof device for the overhead contact line pole according to this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the assembled bird-proof device for the contact wire pole of this utility model.

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective cover half-block of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Half-piece of protective cover; 101. Bottom edge; 102. Top edge; 103. Flange fold; 104. Bolt through hole; 105. Upper crease; 106. Lower stop bar one; 107. Lower stop bar two; 108. Vertical support rib; 2. Upper forming opening; 3. Fastening bolt; 4. Main body of the rod; 401. Top plate; 5. Small top rod. Detailed Implementation

[0023] The core of this utility model is to provide a bird-proof enclosure device for contact network poles, which is suitable for the top of contact network poles with small top rods, reducing the number of birds that stay there and minimizing bird-related problems.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In the following detailed description of the accompanying drawings, the descriptions of top, bottom, left, and right are all relative to the accompanying drawings and should not be construed as limiting the present utility model.

[0025] Refer to the attached diagram. Figure 1This is a three-dimensional structural diagram of the installation state of the bird-proof device for the overhead contact line pole according to this utility model; Figure 2 This is a three-dimensional structural diagram of the assembled bird-proof device for the contact wire pole of this utility model. Figure 3 This is a schematic diagram of the three-dimensional structure of the protective cover half-block of this utility model.

[0026] In one specific implementation, such as Figures 1-3 As shown, a bird-proof protective device for a contact wire pole is installed at the top of the pole body 4. It includes a protective cover body, which is shaped like a frustum and has an upper forming opening 2 at its top that matches a small top rod 5. The smaller end of the protective cover body faces upwards, and the larger bottom end of the protective cover body is fastened to the top end face of the pole body 4.

[0027] Specifically, the protective cover half-piece 1 is made of a weather-resistant rubber material.

[0028] By setting the truncated pyramidal tube-shaped protective cover at the top of the pole body 4, the portion of the top face of the pole body 4, excluding the bottom surface of the small top rod 5, can be completely covered, forming a steeply inclined surface on the outer wall, making it impossible for birds to nest or perch. This utility model of a bird-proof protective device for contact network poles is suitable for the top of contact network poles with small top rods, reducing the number of birds that stay there and minimizing bird-related problems.

[0029] Generally speaking, such as Figure 1 As shown, the main body 4 of the overhead contact line poles along the railway is formed from H-steel columns. Commonly used H-steel columns are H200×200×8×12, H250×250×9×14, and H300×300×10×15, etc. Generally, the top plate of the main body 4 is a welded square flat plate of the corresponding size, and the small top rod 5 is a square tube welded to the middle position of the top plate at its root.

[0030] In one specific embodiment of this utility model, such as Figures 1-3 As shown, the bird-proof device for the contact wire pole of this utility model also includes fastening bolts 3. The main body of the cover is a four-sided frustum cylinder, i.e., a regular frustum. The main body of the cover is symmetrically divided into two cover half-blocks 1 along the diagonal side. The inclined side of the cover half-block 1 is folded outward to form a flange 103. The flange 103 has multiple bolt through holes 104 for the fastening bolts 3 to pass through. When the two cover half-blocks 1 are assembled to form the main body of the cover, stable forming can be achieved by passing multiple fastening bolts 3 through the overlapping flange 103.

[0031] By using two shield half-blocks 1 face-to-face to snap together to form the shield body, not only is installation easier and installation difficulty reduced, but processing and forming are also easier, reducing the manufacturing difficulty of the shield half-block 1 processing mold.

[0032] Specifically, such as Figure 2 and Figure 3 As shown, the inner wall of the protective cover half-block 1 has an upper fold 105 parallel to the top edge 102. The upper fold 105 is recessed and its side length is adapted to the outer wall of a small top rod 5 of another specification. Generally, the specifications of the small top rod 5 are 80×80×4 or 100×100×4.

[0033] The initial top edge 102 surrounds the upper forming opening 2, which can be adapted to the small top rod 5 of 80×80×4 size. If it is necessary to fit on the small top rod 5 of 100×100×4 size, the part above the upper crease 105 can be repeatedly bent to break it off along the crease 105. The newly formed upper forming opening 2 can be adapted to the small top rod 5 of 100×100×4 size.

[0034] By adding crease 105, it can be flexibly adapted to the specifications of the small top rod 5 at the top of the pole on site, which facilitates flexible assembly.

[0035] In one specific embodiment of this utility model, such as Figure 3 As shown, a lower stop bar 106 is provided parallel to the bottom edge 101 on the inner sidewall of the protective cover half-piece 1. The lower stop bar 106 is integrally formed on the inner sidewall of the protective cover half-piece 1. The lower stop bar 106 is protruding and its bottom surface is horizontal. The bottom surface of the lower stop bar 106 can abut against the edge of the top plate of the rod body 4.

[0036] Specifically, such as Figure 3 As shown, a second lower stop bar 107 is provided parallel to the bottom edge 101 and the first lower stop bar 106 on the inner sidewall of the protective cover half-body 1. The second lower stop bar 107 is integrally formed on the inner sidewall of the protective cover half-body 1. The second lower stop bar 107 is protruding and its bottom surface is horizontal. The bottom surface of the second lower stop bar 107 can abut against the edge of the top plate of the other specification rod body 4.

[0037] Depending on the specifications of the H-steel column of the main body 4, the side lengths of the top plate of the main body 4 are 200 mm, 250 mm, and 300 mm. For the 300 mm top plate, the bottom edge 101 directly contacts the top surface of the top plate near the edge. For the 250 mm top plate, the bottom surface of the second lower stop bar 107 abuts against the edge of the top plate. For the 200 mm top plate, the bottom surface of the first lower stop bar 106 abuts against the edge of the top plate.

[0038] Specifically, such as Figure 3 As shown, the cross-sections of both lower stop bar 106 and lower stop bar 2 107 are triangular.

[0039] By adding lower stop bar 106 and lower stop bar 2 107 to the bottom of the inner side wall of the protective cover half block 1, it is possible to flexibly adapt to the rod body 4 of different specifications, reduce the difficulty of on-site installation, and facilitate stable installation.

[0040] In one specific embodiment of this utility model, such as Figure 3 As shown, vertical support ribs 108 are also provided on the inner side wall of the protective cover half-block 1. The vertical support ribs 108 are protruding and arranged vertically. The bottom end of the vertical support ribs 108 intersects with the lower stop strip 106.

[0041] By adding vertical support ribs 108 to the inner wall of the protective cover half-block 1, the structural strength of the protective cover half-block 1 can be increased, reducing the occurrence of dents.

[0042] The installation process of this utility model of a protective bird-proof device on a contact wire pole is as follows: Workers carry two protective cover halves 1 and climb to the top of the pole body 4 where the bird-proof device needs to be installed. Using a measuring tape, measure the side length of the small top rod 5. If it is 80×80×4, it can be installed directly. If it is 100×100×4, the part above the crease 105 needs to be repeatedly bent until it breaks off along the crease 105. With the top edges 102 of the two protective cover halves 1 facing upwards and the flange folds 103 aligned, fasten them to the top plate of the pole body 4. Insert and tighten the fastening bolts 3, first inserting the four fastening bolts 3 at both ends of the flange folds 103 and manually tightening them. Install the remaining fastening bolts 3, tightening them in sequence. Observe the dimensions of the top plate of the pole body 4, and select the initial bottom edge 101, lower stop strip 2 107, or lower stop strip 106 to abut against the edge of the top plate, ensuring full contact on all four sides to avoid tilting. Installation is now complete.

[0043] The bird-proof device for overhead contact lines described in this case, by setting a frustum-shaped protective cover at the top of the pole body 4, can wrap around the portion of the top face of the pole body 4 except for the bottom surface of the small top rod 5, forming a steeply inclined surface on the outer wall, making it impossible for birds to nest or perch. This bird-proof device for overhead contact lines is suitable for the top of overhead contact lines poles with small top rods, reducing bird dwelling and bird damage. In addition, by using two protective cover half-blocks 1 face-to-face to interlock the protective cover body, not only is installation easier and less difficult, but it is also easier to process and form, reducing the manufacturing difficulty of the mold for processing the protective cover half-blocks 1. By adding creases 105, it can be flexibly adapted to the specifications of the small top rod 5 at the top of the pole on site, facilitating flexible assembly. By adding lower stop strip 106 and lower stop strip 2 107 at the bottom of the inner side wall of the protective cover half-block 1, it can be flexibly adapted to pole bodies 4 of different specifications, reducing on-site installation difficulty and facilitating stable installation. By adding vertical support ribs 108 to the inner wall of the protective cover half-block 1, the structural strength of the protective cover half-block 1 can be increased, reducing the occurrence of dents.

[0044] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A bird-proof enclosure device for overhead contact line poles, installed at the top of the main body (4) of the overhead contact line pole, characterized in that: Includes a protective cover body, which is in the shape of a frustum tube and has an upper forming port (2) at the top end that is adapted to the small top rod (5); the bottom port of the protective cover body is fastened to the top end face of the rod body (4).

2. The bird-proof device for the overhead contact line pole according to claim 1, characterized in that: It also includes fastening bolts (3). The main body of the cover is a four-sided frustum cylinder. The main body of the cover is symmetrically divided into two cover half blocks (1) along the diagonal side. The oblique side of the cover half block (1) is folded outward and provided with a flange (103). The flange (103) has multiple bolt through holes (104) for passing through the fastening bolts (3).

3. The bird-proof device for the overhead contact line pole according to claim 2, characterized in that: The inner sidewall of the protective cover half-block (1) has an upper crease (105) arranged parallel below the top edge (102). The upper crease (105) is recessed and its side length is adapted to the outer wall of the small top rod (5) of another specification.

4. The bird-proof device for the contact wire pole as described in claim 2, characterized in that: The inner sidewall of the protective cover half-block (1) is provided with a lower stop bar (106) above the bottom edge (101). The lower stop bar (106) is protruding and the bottom surface is horizontal. The bottom surface of the lower stop bar (106) can abut against the edge of the top plate of the rod body (4).

5. The bird-proof device for the overhead contact line pole according to claim 4, characterized in that: The inner sidewall of the protective cover half-block (1) is provided with a lower stop bar two (107) parallel between the bottom edge (101) and the lower stop bar one (106). The lower stop bar two (107) is protruding and the bottom surface is horizontal. The bottom surface of the lower stop bar two (107) can abut against the edge of the top plate of the rod body (4) of another specification.

6. The bird-proof device for the overhead contact line pole according to claim 2, characterized in that: The inner wall of the protective cover half-block (1) is also provided with vertical support ribs (108), which are protruding and arranged vertically.

7. The bird-proof enclosure device for contact wire poles according to claim 5, characterized in that: The cross-sections of both the first lower stop bar (106) and the second lower stop bar (107) are triangular.

8. The bird-proof device for the overhead contact line pole according to claim 2, characterized in that: The protective cover half-block (1) is specifically made of a weather-resistant rubber material.