Anti-bird type composite cross arm

Abstract

The utility model relates to the technical field of bird prevention of power transmission lines, in particular to an anti-bird composite cross arm. The anti-bird type composite cross arm comprises two cross arms and hoops fixedly installed on the cross arms, and further comprises two baffles, the two baffles are fixedly connected with the two cross arms or the hoops on the cross arms respectively and located on the upper sides of the hoops to shield gaps between the hoops and the cross arms, grooves are formed in the two baffles respectively, and the two baffles are fixedly connected with the two cross arms or the hoops on the cross arms respectively. After the hoop is fixed to the electric pole, the two baffles are clamped on the two opposite sides of the electric pole, and the semicircular attaching portions of the two baffles are attached to the outer circumferential face of the electric pole, so that a gapless shielding face is formed around the electric pole. The gapless shielding surface shields the gap between the cross arm and the hoop and the gap between the hoop and the electric pole from the upper side, so that birds can insert small branches without gaps, the nesting difficulty is increased, materials such as the branches held by the birds can be easily blown away by wind when placed on the gapless shielding surface, nesting conditions are not met, and therefore bird damage can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of bird prevention for power transmission lines, in particular to a bird-proof composite cross arm. Background Art

[0002] Crossarms are a crucial component of distribution line towers, used to mount insulators and hardware to support conductors and lightning conductors, maintaining a specified safe distance. Crossarms are typically secured to the poles with clamps. For example, Chinese utility model patent No. CN219509348U discloses a composite crossarm comprising a crossarm and a two-piece clamp fixed to the crossarm. The clamp comprises two clamp plates and a clamp bolt. A crossarm can be provided with one or two clamps. When provided with two crossarms, the two clamp plates are fixed to the two crossarms, respectively. In use, the two clamp plates are buckled against each other on the pole and tightened with the clamp bolts, securing the crossarm to the pole. The existing composite crossarms have the following problems when in use: there are gaps between the crossarm and the clamp, and between the clamp and the pole. Birds often insert small branches they bring with them into the gaps, use the clamp bolts as support, and add plant straw, firewood, etc. on the small branches to build bird nests. These bird nests are very likely to cause short circuit faults in the distribution line, causing great harm to the safe operation of the distribution line. Utility Model Content

[0003] The purpose of the utility model is to provide a bird-proof composite cross arm to solve the problem that the existing composite cross arm cannot prevent bird damage.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A bird-proof composite crossarm comprises two crossarms and clamps fixedly mounted on the crossarms, and also comprises two baffles, which are respectively fixedly connected to the two crossarms or the clamps on the crossarms and are located on the upper side of the clamps to block the gap between the clamps and the crossarms. A groove is respectively provided on the two baffles, and the groove has a semicircular fitting portion for fitting with the outer peripheral surface of the pole. After the clamps are fixed on the pole, the two baffles are clamped on opposite sides of the pole, and the semicircular fitting portions of the two baffles fit with the outer peripheral surface of the pole to form a gapless shielding surface around the pole.

[0006] Furthermore, the two baffles are flush with the upper surfaces of the cross arms where they are located, and the two baffles are butted together and the upper surfaces of the two baffles are flush to form a gapless plane around the pole, and the gapless plane constitutes the gapless shielding surface.

[0007] Furthermore, flexible pads are provided on the butt joint surfaces of the two baffles and on the wall surfaces of the groove.

[0008] Furthermore, the butting surfaces of the two baffles are inclined surfaces.

[0009] Furthermore, auxiliary fitting structures protruding from the upper surfaces of the baffles and used for fitting with the poles are provided at the grooves on the two baffles.

[0010] Furthermore, the auxiliary bonding structure is a semicircular aluminum sheet.

[0011] Furthermore, the two cross arms are respectively provided with insertion holes, and the bottoms of the two baffles are respectively provided with plug-in legs, which are inserted into the insertion holes on the cross arms to fix the baffles on the cross arms.

[0012] Furthermore, the socket is a polygonal socket, and the shape of the plug-in legs is the same as that of the polygonal socket.

[0013] Furthermore, the insertion hole is a triangular hole, and the insertion leg is an angle iron fixed to the bottom of the baffle and extending perpendicular to the baffle.

[0014] Furthermore, the baffle is L-shaped, the groove is provided on the horizontal plate of the L-shaped baffle, and the vertical plate is fixedly connected to the cross arm by bolts.

[0015] Beneficial effect: The utility model is an improved invention. By arranging a baffle above the clamp to block the gap between the clamp and the cross arm, the baffle is provided with a groove, and the groove has a semicircular fitting portion for fitting with the outer peripheral surface of the pole. After the clamp is fixed to the pole, the two baffles are clamped on opposite sides of the pole, and the semicircular fitting portions of the two baffles fit with the outer peripheral surface of the pole to form a gapless shielding surface around the pole. The gapless shielding surface blocks the gap between the cross arm and the clamp and between the clamp and the pole from the upper side, leaving no space for birds to insert small branches, increasing the difficulty of nesting. In addition, the cross arm is usually fixed near the top of the pole. In the absence of a shielding structure around the baffle, branches, plant straw, firewood and other materials brought by birds and placed on it are easily blown away by the wind, making it very difficult for birds to build nests and not suitable for nesting, thereby effectively preventing bird damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of embodiment 1 of the bird-proof composite crossarm of the utility model installed on a pole;

[0017] Figure 2 This is a structural diagram of embodiment 1 of the bird-proof composite crossarm of the utility model;

[0018] Figure 3 This is a structural diagram of embodiment 2 of the bird-proof composite crossarm of the present utility model;

[0019] Figure 4 This is a structural diagram of implementation mode 3 of the bird-proof composite crossarm of the present utility model;

[0020] Figure 5This is a structural diagram of embodiment 4 of the bird-proof composite crossarm of the present utility model;

[0021] Figure 6 This is a structural diagram of embodiment 5 of the bird-proof composite crossarm of the present utility model;

[0022] Figure 7 This is a structural diagram of embodiment 6 of the bird-proof composite crossarm of the present invention;

[0023] Figure 8 This is a structural diagram of the utility model in which the bottom of the baffle is provided with plug-in legs in embodiment 6 of the bird-proof composite cross arm;

[0024] Figure 9 This is a schematic diagram of embodiment 7 of the bird-proof composite crossarm of the present invention installed on a pole;

[0025] Figure 10 This is a structural diagram of embodiment 7 of the bird-proof composite crossarm of the present utility model;

[0026] In the figure: 1. Cross arm; 2. Baffle; 3. Clamp; 4. Pole; 5. Bolt; 6. Flexible pad; 7. Groove; 8. Docking surface; 9. Semicircular aluminum sheet; 10. Connecting leg. DETAILED DESCRIPTION

[0027] The bird-proof composite crossarm provided by the utility model is mainly used to solve the problem that existing composite crossarms cannot prevent bird damage. The basic inventive concept of the utility model is: a baffle is added to the structure of the existing composite crossarm, and a groove is set on the baffle. After the clamp is fixed to the pole, the groove of the baffle is in contact with the outer peripheral surface of the pole, and a gapless shielding surface is formed around the pole through the baffle. The gap between the crossarm and the clamp and between the clamp and the pole is blocked from the top by the gapless shielding surface, so that birds have no space to insert small branches, thereby increasing the difficulty of nesting. At the same time, in the absence of a shielding structure around, the branches and other materials brought by the birds are easily blown away by the wind when placed on the gapless shielding surface, making it impossible to build a nest, thereby achieving the purpose of preventing bird damage.

[0028] Based on the above-mentioned inventive concept, an embodiment of the bird-proof composite crossarm of the present utility model is described in detail below.

[0029] Implementation method 1:

[0030] like Figure 1-2As shown, the bird-proof composite crossarm includes two crossarms 1 and a clamp 3 fixedly mounted on the crossarms 1. The crossarms 1 are angle iron crossarms with high strength. They also include two baffles 2, which are fixedly connected to the two crossarms 1 and located above the clamp 3, thereby blocking the clamp 3 and the gap between the clamp 3 and the crossarm 1. The baffle 2 is a rectangular plate with a semicircular groove 7 in the middle. The groove 7 is semicircular, and the radius of the semicircular groove 7 is adapted to the radius of the pole 4. The groove wall of the semicircular groove 7 forms a semicircular fitting portion for fitting with the outer circumference of the pole 4. The baffle 2 is a flat plate, and the upper surface of the baffle 2 is flush with the upper surface of the crossarm 1. One side of the baffle 2 is welded to the crossarm 1. The baffle 2 and crossarm 1 are welded into an integral structure, which can simplify the installation process of the composite crossarm. The two crossarms 1 are arranged parallel to each other, and the notches of the semicircular groove 7 on the two baffles 2 are opposite. The clamp 3 is a two-piece clamp, and the two clamps 3 are fixed to the pole 4 by bolts 5. The two baffles 2 are clamped on the opposite sides of the pole 4. The semicircular grooves 7 of the two baffles 2 fit the outer peripheral surface of the pole 4. The two baffles 2 are docked to form a gapless shielding surface around the pole 4. The gapless shielding surface is used to block the gaps between the crossarm 1 and the clamp 3 and between the clamp 3 and the pole 4 from the top, so that the birds have no space to insert small branches, thereby increasing the difficulty of nesting.

[0031] After the two baffles 2 are butted together, their upper surfaces are flush, making the seamless shielding surface a seamless plane. The two baffles 2 are each flush with the upper surface of the crossarm 1 on which they are located, so that the upper surfaces of the two baffles 2 and the upper surfaces of the two crossarms 1 are spliced ​​together to form a larger seamless plane. The crossarm 1 is usually fixed near the top of the pole 4 and installed at a relatively high position. The seamless shielding surface formed by the two baffles 2 being butted together is flat and has no obstructions on all sides. Materials such as branches, plant straw, and firewood brought by birds and placed on this seamless shielding surface can easily be blown away by the wind, further increasing the difficulty for birds to build nests and achieving better bird damage prevention effects.

[0032] Of course, in other embodiments, the baffle 2 can also be fixed on the top of the cross arm 1 so that the upper surface of the baffle 2 is higher than the upper surface of the cross arm 1. At this time, after the two baffles 2 are connected, the upper surfaces of the two baffles 2 are flush, thereby forming a gap-free shielding surface around the pole 4. The gap-free shielding surface is a gap-free plane and there is no obstruction on all sides, which can also increase the difficulty of nesting.

[0033] When installing, if Figure 1 As shown, two cross arms 1 are placed on both sides of the pole 4, and the clamps 3 are connected by bolts 5 until the clamps 3 are tightly clamped on the pole 4 and cannot move relative to each other. The baffles 2 fixed on the cross arms 1 are then stuck on the pole 4, and the two baffles 2 are connected to form a gapless shielding surface, which blocks the gaps between the cross arms 1 and the clamps 3 and between the clamps 3 and the pole 4 from the top.

[0034] Implementation 2:

[0035] like Figure 3 As shown, the main difference between this embodiment and the above embodiment 1 is that the two baffles 2 have different sizes, and the length of one baffle 2 is greater than the length of the other baffle 2. The other structures are the same and will not be repeated.

[0036] Of course, in other embodiments, the two baffles may have different shapes, such as one baffle being rectangular and the other being trapezoidal. The shapes and sizes of the baffles can vary widely, as long as they form a seamless shielding surface when the two baffles are joined. There are no restrictions on the shape and size of the baffles, allowing for full utilization of on-site materials and facilitating the fabrication of the composite crossarm.

[0037] Implementation 3:

[0038] like Figure 4 As shown, the main difference between this embodiment and the above-mentioned embodiment 1 is that flexible pads 6 are provided on the butt joints 8 of the two baffles 2 and on the walls of the semicircular groove 7. The other structures are the same and will not be repeated. The provision of flexible pads 6 on the butt joints 8 of the two baffles 2 further ensures that the two baffles 2 are tightly joined together, avoiding gaps at the butt joints between the two baffles 2. At the same time, the provision of flexible pads 6 on the walls of the semicircular groove 7 further fills the gap between the semicircular groove 7 and the pole. The provision of flexible pads 6 further ensures that the two baffles 2 are seamlessly joined, forming a gapless shielding surface and achieving better bird protection.

[0039] Implementation 4:

[0040] like Figure 5 As shown, the main difference between this embodiment and the above-mentioned embodiment 1 is that the butt joint surface 8 of the two baffles 2 is an inclined surface. The other structures are the same and will not be repeated. The butt joint surface 8 of the two baffles 2 is set as an inclined surface, which can ensure that the two baffles 2 are more tightly connected, further preventing the formation of gaps at the closed position of the baffles 2. After the butt joint is connected, a seamless shielding surface is formed, which has a better bird protection effect.

[0041] Implementation 5:

[0042] like Figure 6 As shown, the main difference between this embodiment and the above-mentioned embodiment 1 is that the two baffles 2 are provided with auxiliary fitting structures protruding from the upper surface of the baffles 2 at the semicircular grooves 7. The auxiliary fitting structures are specifically semicircular aluminum sheets 9, which are welded to the baffles 2. After the crossarm 1 is fixed to the pole, the semicircular aluminum sheets 9 on the two baffles 2 fit the outer circumference of the pole. Even if there is a gap between the circular grooves 7 and the pole, the two baffles 2 can still form a gapless shielding surface around the pole after being connected. The aluminum sheet is relatively soft and easy to bend and deform, making it easier to ensure a seamless fit with the pole.

[0043] In other embodiments, a semicircular rubber ring can be further provided on the baffle corresponding to the semicircular groove. The semicircular rubber ring has good elastic deformation ability. After the cross arm is fixed on the pole, the semicircular rubber rings on the two baffles fit tightly with the outer peripheral surface of the pole, further avoiding the presence of a gap between the semicircular groove and the pole. At this time, the semicircular rubber ring constitutes an auxiliary fitting structure.

[0044] Implementation 6:

[0045] like Figure 7-8 As shown, the main difference between this embodiment and the aforementioned embodiment 4 lies in the different method of fixing the baffles. In this embodiment, the two crossarms 1 are each provided with a socket (not shown in the figure), and the bottom of the two baffles 2 is provided with a plug-in leg 10. The plug-in leg 10 inserts into the socket on the crossarm 1 to fix the baffle 2 to the crossarm 1. The baffle 2 is fixed by plugging, which does not require pre-welding, making installation more convenient. With the crossarm 1 already fixed to the pole 4, the baffle 2 can be plugged into the crossarm 1. After the two baffles 2 are plugged into place, they form a seamless butt joint, thereby forming a seamless shielding surface above the clamp 3.

[0046] Preferably, the socket is a polygonal socket, and the shape of the plug-in leg 10 is the same as that of the polygonal socket. In this way, the plug-in leg 10 and the socket can form a non-rotating fit in the circumferential direction. The plug-in leg 10 can only be inserted into the socket at a set angle and cannot rotate after insertion, so that the position of the plug-in leg 10 can be accurately located, thereby ensuring that the two baffles 2 are seamlessly connected. In this embodiment, the socket is a triangular hole, and an angle iron is welded to the bottom of the baffle 2. The angle iron extends perpendicular to the baffle 2, and the angle iron constitutes the plug-in leg 10. The angle iron is inserted vertically into the socket and forms a non-rotating fit with the socket. Two angle irons are provided on each baffle 2 at intervals, which cooperate with the two sockets on the crossarm 1 to fully ensure that the fixed position of the baffle 2 is accurate and reliable.

[0047] Of course, in other embodiments, the socket can also be a round hole, and the plug leg can be cylindrical to match the round hole. In this case, there are at least two plug legs to ensure that the baffle does not rotate after the plug leg is inserted into the socket, to ensure the installation angle of the baffle, and thus to ensure that the two baffles can be seamlessly connected. The socket can also be a square hole, in which case the plug leg can be a quadrangular prism to match the square hole. Of course, the socket can also have other shapes, which are not listed here.

[0048] Implementation 7:

[0049] like Figure 9-10As shown, the main difference between this embodiment and the above-mentioned embodiment 1 is the different way of fixing the baffle. In this embodiment, the baffle 2 is fixed to the cross arm 1 by bolts 5. The baffle 2 is L-shaped, and the horizontal plate of the L-shaped baffle 2 is provided with a semicircular groove 7, and the vertical plate is fixedly connected to the cross arm 1 by bolts 5. The clamp 3, baffle 2 and cross arm 1 can share a bolt 5. During installation, first place the two clamps 3 on both sides of the pole 4, pass the bolt 5 through the bolt hole on the clamp 3 and tighten it with two nuts. The two nuts are pressed on the outside of the two clamps 3 respectively, and the clamp 3 is fixed to the pole 4. Then, place the two baffles 2 and the two cross arms 1 on both sides of the pole 4, pass the bolt 5 through the baffle 2 and the cross arm 1 and tighten it with nuts to complete the installation. In other embodiments, the two baffles and the two cross arms can also be fixed together by a bolt, and the bolt is not shared with the clamp.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall also be included in the scope of protection of the present invention.

Claims

1. A bird-proof composite crossarm, comprising two crossarms and a clamp fixedly mounted on the crossarms, characterized in that: It also includes two baffles, which are respectively fixedly connected to the two cross arms or the clamps on the cross arms and are located on the upper side of the clamps to block the gap between the clamps and the cross arms. A groove is provided on the two baffles, and the groove has a semicircular fitting portion for fitting with the outer peripheral surface of the pole. After the clamp is fixed on the pole, the two baffles are clamped on the opposite sides of the pole, and the semicircular fitting portions of the two baffles fit with the outer peripheral surface of the pole to form a gapless shielding surface around the pole.

2. The bird-proof composite crossarm according to claim 1, characterized in that: The two baffles are flush with the upper surfaces of the cross arms where they are located, and the two baffles are butted against each other and the upper surfaces of the two baffles are flush to form a gapless plane around the pole, which constitutes the gapless shielding surface.

3. The bird-proof composite crossarm according to claim 2, characterized in that: Flexible pads are provided on the butt joint surfaces of the two baffles and the groove wall surfaces of the groove.

4. The bird-proof composite crossarm according to claim 2, characterized in that: The butt joint surfaces of the two baffles are inclined surfaces.

5. The bird-proof composite crossarm according to any one of claims 2 to 4, characterized in that: An auxiliary fitting structure protruding from the upper surface of the baffles and used for fitting with the electric poles is provided at the grooves of the two baffles.

6. The bird-proof composite crossarm according to claim 5, characterized in that: The auxiliary fitting structure is a semicircular aluminum sheet.

7. The bird-proof composite crossarm according to any one of claims 2 to 4, characterized in that: The two cross arms are respectively provided with inserting holes, and the bottoms of the two baffles are respectively provided with plugging legs, which are inserted into the inserting holes on the cross arms to fix the baffles on the cross arms.

8. The bird-proof composite crossarm according to claim 7, characterized in that: The socket is a polygonal socket, and the shape of the plugging legs is the same as that of the polygonal socket.

9. The bird-proof composite crossarm according to claim 8, characterized in that: The insertion hole is a triangular hole, and the insertion leg is an angle iron fixed on the bottom of the baffle and extending perpendicular to the baffle.

10. The bird-proof composite crossarm according to any one of claims 1 to 4, characterized in that: The baffle is L-shaped, the groove is provided on the horizontal plate of the L-shaped baffle, and the vertical plate is fixedly connected to the cross arm by bolts.

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