A type of crossarm structure for transmission towers

Abstract

This utility model provides a crossarm structure for a transmission tower, including a crossarm body. An insulating mounting plate is installed on the top of the crossarm body, and a connecting plate is installed at one end. A wind-powered grinding mechanism is installed below one end of the crossarm body, and a drug chamber is set inside the mechanism. A pusher plate is elastically slidably installed in the drug chamber by a spring, and drug blocks are placed on the pusher plate in the drug chamber. This utility model solves the problem of wind affecting traditional chemical bird deterrents by linking wind-powered grinding with elastic feeding: when there is no wind, the drug evaporates naturally; when there is wind, the blades drive the grinding head to grind the drug to replenish the concentration. Wind power is the only power source, making it more reliable without external power supply. The barbs on the pusher plate ensure stable feeding. The components are integrated into the crossarm, saving space. The drug can be replenished by removing the sealing plate, making operation and maintenance convenient.

Description

Technical Field

[0001] This utility model belongs to the field of crossarm technology, and in particular relates to a crossarm structure for transmission towers. Background Technology

[0002] As the core supporting structure of the power transmission system, the operational stability of transmission towers is directly related to the safety of the power grid. In outdoor environments, the crossarm areas of transmission towers are prone to becoming nesting and resting places for birds. Bird droppings and nesting materials (such as branches and wires) can easily cause faults such as line short circuits and insulator flashovers, and in severe cases, even lead to large-scale power outages, putting enormous pressure on power operation and maintenance.

[0003] To address bird disturbance, various bird control methods have been developed, primarily categorized into physical and chemical methods. Physical bird control devices (such as reflective mirrors and windmill-style bird deterrents) repel birds through visual or mechanical disturbance, but birds easily adapt in the short term, leading to a significant decrease in long-term effectiveness. Chemical bird control methods often employ solid repellents, releasing odors that birds dislike. However, in windy conditions, the odors are rapidly diluted, causing a sharp drop in concentration and rendering the repellent ineffective.

[0004] Therefore, it is essential to invent a crossarm structure for transmission towers. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a crossarm structure for a transmission tower, including a crossarm body, an insulating mounting plate, a connecting plate, a wind-powered grinding mechanism, a drug chamber, a pusher plate, a spring, and a drug block. The insulating mounting plate is installed on the top of the crossarm body, and the connecting plate is installed at one end of the crossarm body. The wind-powered grinding mechanism is installed below one end of the crossarm body, and a drug chamber is provided inside the mechanism. The pusher plate is elastically slidably installed in the drug chamber by the spring, and the drug block is placed on the pusher plate in the drug chamber.

[0006] Preferably, the wind-powered grinding mechanism includes a sealing plate, a rotating shaft, a grinding head, drug diffusion holes, and wind turbine blades. The sealing plate is fixedly installed on the crossbeam body by bolts. The grinding head and wind turbine blades are fixedly installed at both ends of the rotating shaft rotatably installed on the sealing plate. The drug diffusion holes are evenly distributed and penetrated on the grinding head and the sealing plate.

[0007] Preferably, the sealing plate is fixedly installed at one end below the crossbeam body and closes the lower opening of the drug cavity. The sealing plate has a rectangular plate structure.

[0008] Preferably, the opening of the drug cavity faces downward, and the lower surface of the pusher plate that is elastically slidably installed inside it is evenly provided with a number of conical barbs, and the barbs evenly distributed on the pusher plate are inserted into the end face of the drug block.

[0009] Preferably, the lower end face of the drug block is in close contact with the rough surface of the grinding head, the grinding head is fixedly mounted on one end of the rotating shaft that extends into the drug cavity, and the drug diffusion holes provided on the sealing plate and the grinding head allow the drug block odor and grinding powder to pass through.

[0010] Preferably, the wind turbine blades are fixedly installed at the other end of the shaft, i.e., the end that extends outward.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention perfectly solves the core problem of traditional chemical bird repellents being affected by wind through the linkage design of a wind-powered grinding mechanism and an elastic feeding structure. In windless conditions, the odor of the solid drug block can naturally evaporate through the diffusion holes on the sealed plate and grinding head, forming a locally effective repellent area. When wind is applied, the wind turbine blades drive the rotating shaft and grinding head to rotate, while a spring continuously pushes the pusher plate to press the drug block against the grinding head, grinding the drug into a high-concentration powder that quickly diffuses through the diffusion holes. This design achieves a positive correlation between wind force and drug concentration; the stronger the wind, the more powder is generated, effectively offsetting the odor dilution problem and achieving a stable bird repellent effect under all wind conditions.

[0012] This invention uses natural wind power as its sole power source, eliminating the need for an external power supply or battery. This completely solves the operational challenges of bird-repelling equipment operating outdoors on power transmission towers without power supply, while also avoiding the risk of failure due to moisture and aging of electronic components, significantly improving equipment reliability. Furthermore, the conical barbs on the lower surface of the pusher can deeply penetrate the end face of the drug block. Combined with the continuous elasticity of the spring, this ensures that the drug block does not shift or tip over during grinding, maintaining close contact with the rough surface of the grinding head. This achieves uniform feeding and efficient grinding, solving the problems of drug detachment and feeding interruptions in traditional devices.

[0013] This invention integrates core components such as the drug chamber and the air-powered grinding mechanism into the lower part of the crossarm body, and fixes them closed with bolts using a sealing plate. This design does not occupy external space of the crossarm, nor does it affect the insulation distance of the transmission line or the aerodynamic performance of the crossarm. Compared with externally mounted bird deterrents, it is more suitable for the structural characteristics of transmission towers. The bolted connection structure of the sealing plate and the reasonable layout of the drug chamber allow for drug replenishment simply by disassembling the sealing plate. The rotating shaft of the grinding mechanism and the sealing plate adopt a rotating fit design, which facilitates individual component replacement and significantly reduces maintenance costs and workload. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the bottom structure of this utility model.

[0015] Figure 2This is a partial cross-sectional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the wind-powered grinding mechanism of this utility model.

[0017] In the picture: 1. Crossarm body; 2. Insulating mounting plate; 3. Connecting plate; 4. Wind-powered grinding mechanism; 41. Sealing plate; 42. Rotating shaft; 43. Grinding head; 44. Drug diffusion hole; 45. Wind turbine blade; 5. Drug chamber; 6. Push plate; 7. Spring; 8. Drug block. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a crossarm structure for a transmission tower, comprising a crossarm body 1, an insulating mounting plate 2, a connecting plate 3, a wind-powered grinding mechanism 4, a drug chamber 5, a pusher plate 6, a spring 7, and a drug block 8. The insulating mounting plate 2 is installed on the top of the crossarm body 1, and the connecting plate 3 is installed at one end of the crossarm body 1. The wind-powered grinding mechanism 4 is installed below one end of the crossarm body 1, and a drug chamber 5 is provided inside the mechanism. The pusher plate 6 is elastically slidably installed in the drug chamber 5 by means of the spring 7, and the drug block 8 is placed on the pusher plate 6 in the drug chamber 5.

[0021] Furthermore, the wind-powered grinding mechanism 4, as the core actuator for bird deterrence, includes a sealing plate 41, a rotating shaft 42, a grinding head 43, drug diffusion holes 44, and wind turbine blades 45. The sealing plate 41 is made of hot-rolled steel plate, with 4-6 pre-drilled M12 threaded mounting holes on its edges. It is fastened to the mounting flange face below the crossarm body 1 by high-strength bolts, and weather-resistant rubber gaskets are added at the bolt connections to achieve waterproof and dustproof sealing. A stepped mounting hole is opened at the center of the sealing plate 41, and a 6204 deep groove ball bearing is embedded in the hole. The rotating shaft 42 forms a rotational fit with the sealing plate 41 through the bearing. The two ends of the bearing are sealed with skeleton oil seals for secondary sealing, which can effectively prevent outdoor rainwater and sand from entering. The two ends of the rotating shaft 42 are respectively circumferentially fixed to the grinding head 43 and the wind turbine blades 45 by flat keys, and anti-loosening nuts are tightened on the shaft ends for axial limit. The grinding head 43 is integrally formed from cemented carbide. Its end face facing the drug block 8 is sandblasted to form a rough grinding surface. Drug diffusion holes 44 are evenly distributed through the sealing plate 41 and the grinding head 43. The holes are arranged in a ring array to ensure that the odor and drug powder can pass through smoothly. The connection end between the wind turbine blade 45 and the rotating shaft 42 is formed into a bushing structure by molding process.

[0022] Furthermore, the sealing plate 41 is a rectangular plate structure, and its length and width are adapted to the size of the opening below the drug chamber 5. The sealing plate 41 is fixedly installed at one end of the crossarm body 1 near the connecting plate 3 by four M16 high-strength bolts. The outer surface of the sealing plate 41 is coated with an outdoor-specific fluorocarbon coating, which has excellent resistance to ultraviolet rays and acid and alkali corrosion, and can adapt to the complex outdoor climate environment of the transmission tower.

[0023] Furthermore, the drug cavity 5 is an integrally formed cavity structure below the crossbeam body 1, with the cavity opening facing downwards. Its inner wall is machined with two symmetrical axial guide grooves. The width of the guide grooves matches the protrusions on the edge of the pusher plate 6, ensuring that the pusher plate 6 can slide smoothly along the cavity axis. The depth of the drug cavity 5 is designed according to the height of the drug block 8. The pusher plate 6 is injection molded from nylon or ABS engineering plastic, and the clearance between its outer diameter and the inner wall of the drug cavity 5 is controlled at 0.5-1mm. The lower surface of the pusher plate 6 is evenly distributed with tapered barbs. When the drug block 8 is placed on the pusher plate 6, the evenly distributed barbs on the pusher plate 6 can deeply insert into the upper end face of the drug block 8 (insertion depth 3-5mm), forming a mechanical interlocking structure, preventing the drug block 8 from rotating or tipping over due to the rotational force of the grinding head 43 during grinding. A spring positioning post is welded to the center of the upper end face of the pusher plate 6 to axially limit the spring 7, ensuring that the spring force can be evenly applied to the pusher plate 6.

[0024] Furthermore, the drug block 8 is a cylindrical solid structure, made of a wax-based slow-release bird repellent (mainly composed of natural repellent ingredients such as menthol and clove oil). Its diameter matches the inner diameter of the drug cavity 5, and its height is designed according to the depth of the drug cavity 5. The lower end face of the drug block 8 is in close contact with the rough surface of the grinding head 43. The contact pressure is provided by the spring 7, which is a compression spring. Its elastic force is transmitted to the drug block 8 through the push plate 6, ensuring that the drug block 8 remains in contact with the grinding head 43 during the grinding process, avoiding the phenomenon of free rotation caused by grinding gaps. The grinding head 43 is fixedly installed at one end of the rotating shaft 42 that extends into the drug cavity 5 by a flat key. The drug diffusion holes 44 set on the sealing plate 41 and the grinding head 43 are distributed vertically and vertically. The total flow area of ​​the holes accounts for 15%-20% of the plate area, which allows the odor of the drug block 8 to be smoothly discharged, and ensures the rapid diffusion of the powder generated by grinding. At the same time, the hole size can effectively prevent unground drug particles from falling off.

[0025] Furthermore, the end of the rotating shaft 42 furthest from the drug chamber 5 (i.e., the end extending outward) is machined with an M14 threaded section. The bushing structure of the wind turbine blade 45 has a threaded through hole at its center, which is fixedly assembled with the rotating shaft 42 through a threaded connection. After assembly, double nuts are screwed on the outside of the bushing for anti-loosening locking, and a spring washer is added between the two nuts to enhance the anti-loosening effect. The blade angle of the wind turbine blade 45 is designed to be 15°-20°, which can drive the rotating shaft 42 to rotate under wind force of level 3 and above (wind speed 3.4-5.4m / s).

[0026] The working principle is as follows: First, the crossarm structure 1 of the transmission tower is fixed to the main body of the transmission tower through the connecting plate 3. The insulating mounting plate 2 is used to install the transmission line. Under the elastic force of the spring 7, the pusher 6 in the drug chamber 5 pushes the drug block 8 towards the grinding head 43 below, so that the drug block 8 and the grinding head 43 are in close contact.

[0027] Secondly, in a windless environment, the bird-repelling odor emitted by the drug block 8 will pass through the drug diffusion holes 44 on the grinding head 43 and the sealing plate 41 in sequence, and be slowly released outward to form a local bird-repelling area, thus achieving a basic bird-repelling effect.

[0028] Then, when wind is generated outdoors, the wind force acts on the wind turbine blades 45, causing the rotating shaft 42 to rotate around the closed plate 41, and the grinding head 43 connected to the rotating shaft 42 rotates synchronously.

[0029] At the same time, the spring 7 continuously applies a downward elastic force to the push plate 6, and the conical barbs on the lower surface of the push plate 6 are embedded in the end face of the drug block 8 to prevent the drug block 8 from rotating with the rotation of the grinding head 43, ensuring that the rough surface of the grinding head 43 can stably grind the drug block 8.

[0030] Finally, the powdered medicine produced by grinding is rapidly diffused outward through the corresponding drug diffusion holes 44 distributed on the grinding head 43 and the sealing plate 41, which makes up for the problem of odor dilution caused by wind, increases the concentration of bird repellent odor, and achieves the purpose of effectively repelling birds.

[0031] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A crossarm structure for a transmission tower, characterized in that, The device includes a crossarm body (1), an insulating mounting plate (2), a connecting plate (3), a wind-powered grinding mechanism (4), a drug chamber (5), a pusher plate (6), a spring (7), and a drug block (8). The insulating mounting plate (2) is installed on the top of the crossarm body (1), and the connecting plate (3) is installed on one end of the crossarm body (1). The wind-powered grinding mechanism (4) is installed below one end of the crossarm body (1), and a drug chamber (5) is provided inside the mechanism. The pusher plate (6) is elastically slidably installed in the drug chamber (5) by the spring (7), and the drug block (8) is placed on the pusher plate (6) of the drug chamber (5).

2. The transmission tower crossarm structure as described in claim 1, characterized in that: The wind-powered grinding mechanism (4) includes a sealing plate (41), a rotating shaft (42), a grinding head (43), a drug diffusion hole (44), and a wind turbine blade (45). The sealing plate (41) is fixedly installed on the crossbeam body (1) by bolts. The grinding head (43) and the wind turbine blade (45) are fixedly installed at both ends of the rotating shaft (42) rotatably installed on the sealing plate (41). The drug diffusion holes (44) are evenly distributed and penetrated on the grinding head (43) and the sealing plate (41).

3. The transmission tower crossarm structure as described in claim 2, characterized in that: The sealing plate (41) is fixedly installed at one end below the crossbeam body (1) and closes the lower opening of the drug cavity (5). The sealing plate (41) is a rectangular plate structure.

4. The transmission tower crossarm structure as described in claim 3, characterized in that: The opening of the drug cavity (5) faces downward, and the lower surface of the push plate (6) which is elastically slidably installed inside it is evenly provided with several conical barbs. The barbs evenly distributed on the push plate (6) are inserted into the end face of the drug block (8).

5. A transmission tower crossarm structure as described in claim 4, characterized in that: The lower end face of the drug block (8) is in close contact with the rough surface of the grinding head (43). The grinding head (43) is fixedly installed at one end of the rotating shaft (42) that extends into the inside of the drug cavity (5). The drug diffusion holes (44) provided on the sealing plate (41) and the grinding head (43) allow the odor of the drug block (8) and the grinding powder to pass through.

6. The transmission tower crossarm structure as described in claim 5, characterized in that: The wind turbine blade (45) is fixedly installed at the other end of the shaft (42), that is, the end that extends outward.

Images