Magnetic core ultrasonic bird repelling device based on line self-power-taking technology

Abstract

The magnetic core ultrasonic bird repelling device based on the line self-power-taking technology is provided with a bird repelling device and a transmission piece communicated with an ultrasonic output port of the bird repelling device, and a guide assembly is arranged at the tail end, away from the bird repelling device, of the transmission piece; the guide assembly comprises an inner concave cylinder arranged on the transmission part, positioning plates are fixedly arranged on the inner walls of the two axial ends of the inner concave cylinder, a refraction part is arranged in the inner concave cylinder in a sleeved mode, and the section of the refraction part is rhombic; a plurality of diffusion assemblies are evenly arranged on the periphery of the inner concave cylinder, each diffusion assembly comprises a protective shell arranged on the periphery of the inner concave cylinder, a bearing shaft distributed in the axial direction of the inner concave cylinder is arranged in each protective shell, a plurality of special-shaped balls are evenly arranged on the peripheral face of each bearing shaft, and piezoelectric ceramic pieces with different angles are evenly attached to the surfaces of the special-shaped balls in a covering mode. The problems that in the prior art, a self-power-taking ultrasonic bird repelling device is small in bird repelling radiation direction, and a power transmission line is easily affected by birds in a blind area of the self-power-taking ultrasonic bird repelling device are solved.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line protection, and in particular to a magnetic core ultrasonic bird-repelling device based on line self-powering technology. Background Art

[0002] In modern power systems, the safe and stable operation of transmission lines is of vital importance. However, activities such as birds roosting and nesting on transmission lines pose many safety risks to the power system.

[0003] In recent years, ultrasonic bird repellent technology has been gradually applied due to its advantages of environmental protection, harmlessness, and wide range of bird repellent. Ultrasonic bird repellent devices emit high-frequency sound waves that are inaudible to human ears but can be sensed by birds, making birds feel uncomfortable and thus stay away from power transmission lines. However, the use of an external power supply to power the ultrasonic generator requires laying a dedicated power supply line, which is costly. In addition, in some remote areas or mountainous areas, due to the lack of suitable power access points, it is difficult to implement an external power supply method. Therefore, a magnetic core ultrasonic bird repellent device based on line self-powering technology has emerged. This technology uses the changes in the magnetic field around the transmission line to obtain electrical energy through magnetic core induction power supply to power the ultrasonic bird repellent device.

[0004] During use of the existing self-powered ultrasonic bird-repellent device, the ultrasonic wave will be transmitted in a direction in the form of longitudinal waves or transverse waves. Even if it encounters tiny particles and causes scattering and diffraction, the direction of the ultrasonic wave will not be greatly changed, that is, the ultrasonic wave transmission has a strong directionality, so the effective range of ultrasonic bird-repellent is in a space similar to a cone or a fan. Within this space, the ultrasonic wave can be effectively propagated and have a stimulating and repelling effect on the birds, that is, the ultrasonic wave can mostly only be used to repel birds within a certain range in a certain direction, that is, it cannot be used in a certain spherical area, so birds will stand or nest on a path where the ultrasonic wave is weak or does not pass. For example, the self-powered ultrasonic bird-repellent device is installed on the transmission line, and the ultrasonic wave of the self-powered ultrasonic bird-repellent device propagates along the length of the transmission line. When birds build nests on the transmission tower at a position far away from the transmission line, the possibility of the birds being affected by the ultrasonic wave and leaving will be greatly reduced. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the radiation direction of the self-powered ultrasonic bird-repellent device in the prior art is small, which easily causes birds to affect the power transmission line in the blind area of ​​the self-powered ultrasonic bird-repellent device, and to provide a magnetic core ultrasonic bird-repellent device based on line self-powered technology.

[0006] The present invention solves the above-mentioned technical problems and adopts the following technical solutions: a magnetic core ultrasonic bird-repelling device based on line self-powering technology, characterized in that: it has a bird repeller and a transmission member connected to the ultrasonic output port of the bird repeller, and a guide component is provided at the tail end of the transmission member away from the bird repeller;

[0007] The guide assembly comprises an inner concave cylinder arranged on the transmission member, the inner wall of the inner concave cylinder is a concave surface, positioning plates are fixedly arranged on the inner walls at both ends of the axial direction of the inner concave cylinder, a plurality of through grooves are evenly arranged on the positioning plates, a refraction member is sleeved in the inner concave cylinder, the two ends of the refraction member are respectively fixedly connected to the two positioning plates, and the cross section of the refraction member is a rhombus;

[0008] A plurality of diffusion components are evenly arranged on the outer periphery of the inner concave cylinder. The diffusion components include a protective shell arranged on the outer periphery of the inner concave cylinder. A bearing shaft distributed along the axial direction of the inner concave cylinder is arranged in the protective shell. A plurality of special-shaped balls are evenly arranged on the outer periphery of the bearing shaft. The surfaces of the special-shaped balls are evenly covered with piezoelectric ceramic sheets at different angles.

[0009] As a further optimization of the magnetic core ultrasonic bird-repelling device based on the line self-powering technology of the present invention: the transmission component includes a flexible tube connected to the ultrasonic output port of the bird-repelling device and a supporting tube fixedly connected to the flexible tube, a connecting piece for positioning is provided on the supporting tube, and a resonance tube is sleeved in the supporting tube and the flexible tube, and a frequency-increasing medium is sealed in the resonance tube.

[0010] As a further optimization of the magnetic core ultrasonic bird repellent device based on the line self-power supply technology of the present invention: a rigid tube is provided between the flexible tube and the bird repellent, and an amplification component perpendicular to the rigid tube is fixedly provided on the rigid tube. The amplification component includes an extension tube fixedly connected to the rigid tube, and an output port is provided on the side of the extension tube away from the supporting tube, and a porous column is provided in the extension tube.

[0011] As a further optimization of the magnetic core ultrasonic bird-repelling device based on the line self-powering technology of the present invention: two bird repellers are provided, the two bird repellers are symmetrically arranged, and the two bird repellers are connected to the inner concave cylinder through a transmission member.

[0012] As a further optimization of the magnetic core ultrasonic bird repellent device based on the line self-powering technology of the present invention: an amplification sleeve is provided on the inner wall of the protective shell, and the amplification sleeve is made of piezoelectric ceramics.

[0013] As a further optimization of the magnetic core ultrasonic bird-repellent device based on the line self-power supply technology of the present invention: the outer periphery of the inner concave cylinder is provided with multiple fixing seats included in the positioning assembly, the tail end of the supporting tube is provided with an annular groove, the annular groove is clamped with the annular ring provided on the end face of the inner concave cylinder, and the annular groove and the outer periphery of the annular ring are evenly provided with through holes connected to the fixing seats, and the through holes are threadedly connected with screws.

[0014] As a further optimization of the magnetic core ultrasonic bird-repelling device based on the line self-powering technology of the present invention: multiple protective shells are rotatably connected to the outer periphery of the inner concave cylinder, multiple fixed seats are fixedly connected to a connecting rail at the ends away from the through holes, a rotating ring is rotatably provided in the connecting rail, a driving strip fixedly connected to the outer periphery of the protective shell is fixedly provided on the outer periphery of the rotating ring, and multiple wind fan blades are evenly provided on the side of the rotating ring away from the connecting rail.

[0015] As a further optimization of the magnetic core ultrasonic bird repellent device based on line self-powering technology of the present invention: the fixed seat is provided with three groups symmetrically arranged in pairs, the three groups of fixed seats are evenly arranged on the outer periphery of the two ends of the annular ring, and the connecting rail and the rotating ring are both arranged in a C shape.

[0016] As a further optimization of the magnetic core ultrasonic bird repellent device based on the line self-powering technology of the present invention: a gear is fixedly provided at the end of the load-bearing shaft passing through the protective shell, the gear is meshed with the residual gear ring for transmission, and the residual gear ring is fixedly arranged on the outer circumferential surface of the connecting rail.

[0017] As a further optimization of the magnetic core ultrasonic bird repellent device based on the line self-powering technology of the present invention: a cleaning layer is provided on the end surface of the plurality of protective shells facing the outer periphery of the inner concave cylinder, and the cleaning layer is made of a brush.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention arranges a transmission component to place a guide component for refracting ultrasonic waves at a suitable position, and then the ultrasonic waves can be refracted and strengthened by the refraction component and the inner concave cylinder included in the guide component. At the same time, a plurality of special-shaped balls included in the diffusion component are arranged on the path of the inner concave cylinder to refract the ultrasonic waves outward, that is, the piezoelectric ceramic sheets evenly attached to the special-shaped balls are cooperated to further refract the ultrasonic waves, and then the coverage range of the ultrasonic waves is made similar to a sphere, so as to reduce the blind area of ​​the ultrasonic wave coverage, thereby protecting the transmission tower and the equipment arranged in the transmission tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0023] Figure 4 is a schematic diagram of the cross-sectional structure of the diffusion component of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the amplifier assembly of the present invention;

[0025] Markings in the figure: 1. Bird repeller; 2. Transmission component; 201. Flexible tube; 2011. Rigid tube; 202. Bearing tube; 203. Resonance tube; 204. Frequency-increasing medium; 205. Annular groove; 3. Connector; 4. Positioning assembly; 401. Wind fan blade; 402. Rotating ring; 403. Connecting rail; 404. Fixing seat; 405. Through hole; 406. Screw; 407. Driving strip; 5. Diffusion assembly; 501. Residual tooth ring; 502. Gear; 503. Bearing shaft; 504. Special-shaped ball; 505. Amplification sleeve; 506. Protective shell; 6. Guide assembly; 601. Annular ring; 602. Concave cylinder; 603. Refraction member; 604. Positioning plate; 7. Amplification assembly; 701. Extension cylinder; 702. Output port; 703. Porous column. DETAILED DESCRIPTION

[0026] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0027] <Example 1>

[0028] like Figure 1As shown, a magnetic core ultrasonic bird repellent device based on line self-powering technology has a bird repellent 1. Specifically, the bird repellent 1 is a magnetic core ultrasonic bird repellent device based on line self-powering technology, and the device is installed on the transmission line using a current transformer. When an alternating current passes through the transmission line, an alternating magnetic field will be generated. The power coil of the current transformer is in the alternating magnetic field. According to the principle of electromagnetic induction, the power coil will induce an alternating electric potential of a certain magnitude, thereby obtaining electrical energy to perform the integrated ultrasonic generator function. The bird repellent 1 can use the DL-S6223 ultrasonic self-powered bird repellent 1. After the bird repellent 1 emits an ultrasonic wave, part of the ultrasonic wave will be transmitted to the transmission component 2 connected to the ultrasonic output port 702 of the bird repellent 1. Then the transmission component 2 will amplify the ultrasonic wave and cooperate with the guide component 6 connected to the transmission component 2. Next, the refraction component 603 included in the guide component 6 will refract the ultrasonic wave and transmit it to The outer periphery of the refraction member 603, specifically, the refraction member 603 is a cylinder with a diamond-shaped cross section, and the inclined outer periphery of the refraction member 603 can transmit the ultrasonic wave to the outer periphery of the refraction member 603 based on the inclined surface after the ultrasonic wave passes through, and at the same time, the refraction member 603 will be connected to the inner concave cylinder 602 through the positioning plate 604 with a plurality of through grooves on the surface, so as to gather and amplify the refracted ultrasonic wave and then transmit it out of the inner concave cylinder 602 to the outer periphery of the inner concave cylinder 602. Specifically, the inner wall of the inner concave cylinder 602 is a concave surface setting, so as to concentrate the ultrasonic wave, amplify it and transmit it out of the outer periphery of the inner concave cylinder 602 to the outside of the inner concave cylinder 602, and the inner concave cylinder A plurality of diffusion components 5 are evenly arranged on the periphery of the inner concave cylinder 602. The diffusion components 5 include a protective shell 506 arranged on the periphery of the inner concave cylinder 602. The protective shell 506 is arranged without a wall on the side facing the inner concave cylinder 602. A bearing shaft 503 distributed along the axial direction of the inner concave cylinder 602 is arranged inside the inner concave cylinder 602. A plurality of special-shaped balls 504 are evenly arranged on the bearing shaft 503. The surfaces of the special-shaped balls 504 are evenly covered with piezoelectric ceramic sheets arranged at different angles. When the ultrasonic wave transmitted in the inner concave cylinder 602 passes through, the ultrasonic wave transmitted in the inner concave cylinder 602 is refracted again at different angles and transmitted to different directions. The refraction of the protective shell 506 is used to coordinate with the different surfaces of the special-shaped ball 504 to produce resonance for amplification, and further change the transmission direction of the ultrasonic wave. Then, the ultrasonic wave will be refracted from the inner concave cylinder 602 to multiple angles to cover the spherical area, that is, it can drive away the birds in the spherical area. On the basis that the transmission component 2 can set the inner concave cylinder 602 at the corresponding position of the transmission tower, the inner concave cylinder 602 can cover the transmission tower and the power transmission equipment concentrated on the transmission tower, such as insulators, with ultrasonic waves, thereby achieving the purpose of bird-repelling protection for the equipment on the transmission tower, thereby reducing the impact of birds on the transmission line.

[0029] The transmission member 2 includes a flexible tube 201 and a supporting tube 202 connected to the flexible tube 201. The supporting tube 202 is provided with a connector 3 for positioning. When the bird repeller 1 is provided with one, the end of the inner concave cylinder 602 away from the supporting tube 202 is provided with another closed supporting tube 202, so as to cooperate with another connector 3 to stably position the inner concave cylinder 602 on the transmission tower. Specifically, the connector 3 is a pipeline clamp, which is used to connect with the transmission tower to place the supporting tube 202 in the transmission tower, and further can be used to fix the end of the supporting tube 202. The inner concave cylinder 602 is arranged at the corresponding center of the transmission tower, and then the spherical ultrasonic wave radiation range refracted at the inner concave cylinder 602 can cover most of the transmission equipment installed on the transmission tower, so as to drive away birds and protect the transmission tower and the corresponding equipment, and at the same time reduce the probability of birds nesting on the transmission tower. The flexible tube 201 and the transmission tube are both provided with a resonance tube 203, and the resonance tube 203 is provided with a frequency-increasing medium 204, and the frequency-increasing medium 204 includes a quartz crystal, a lithium niobate crystal or a lithium tantalate crystal. An annular groove 205 is provided at the end of the supporting tube 202, and an annular ring 601 fixed on the end surface of the inner concave cylinder 602 is inserted into the annular groove 205. The annular ring 601 and the annular groove 205 are connected by a positioning component 4 provided on the outer periphery of the inner concave cylinder 602. The positioning component 4 includes a plurality of fixing seats 404. The fixing seats 404 are provided with through holes 405 connecting the annular ring 601 and the annular groove 205. Specifically, the fixing seats 404 are provided with three groups of two and symmetrically arranged. The three groups of fixing seats 404 are evenly arranged on the outer periphery of the annular groove 205. The through holes 405 are threadedly connected with screws 406 to connect the inner concave cylinder 602 and the supporting tube 202 together.

[0030] like Figure 2 As shown, when two bird repellers 1 are provided, the two bird repellers 1 are point-symmetrical. Specifically, the two bird repellers 1 are provided on both sides of the transmission tower, respectively. Then, the ultrasonic wave is transmitted to both ends of the refraction member 603 through two flexible tubes 201 and two transmission tubes. Then, the transmission intensity of the ultrasonic wave can be improved to a certain extent, thereby improving the coverage range of the ultrasonic wave for bird repelling to a certain extent.

[0031] <Example 2>

[0032] like Figure 3 and Figure 5As shown, this embodiment is basically the same as embodiment 1, and is different from embodiment 1 in that a rigid tube 2011 is provided at the connection between the flexible tube 201 and the bird repeller 1, and an amplification component 7 perpendicular to the bird repeller 1 is provided on the rigid tube 2011, and the amplification component 7 includes an extension tube 701 fixedly connected to the rigid tube 2011, an output port 702 is provided on the extension tube 701, and a porous column 703 is provided in the extension tube 701. When the ultrasonic wave passes through the rigid tube 2011, the porous column 703 refracts the resonant ultrasonic wave passing through the rigid tube 2011 for multiple times, and then outputs it through the output port 702 on the extension tube 701, so as to ultrasonically cover the power transmission line parallel to the power transmission line connected to the bird repeller 1, and then the range of ultrasonic coverage can be further improved, that is, the range of bird repeller can be improved.

[0033] <Example 3>

[0034] like Figure 4 As shown, this embodiment is basically the same as embodiment 1, and is different from embodiment 1 in that the protective shell 506 is rotatably arranged on the outer circumference of the inner concave cylinder 602, and the two sets of fixed seats 404 are fixedly provided with connecting rails 403 on the side away from the inner concave cylinder 602, and a rotating ring 402 is rotatably arranged in the connecting rail 403, and the end surface of the rotating ring 402 away from the inner concave cylinder 602 is evenly provided with wind blades 401, and the outer circumferences of the two rotating rings 402 are evenly fixedly connected with the outer circumferences of multiple driving strips 407, and the multiple driving strips 407 are respectively fixedly connected to the multiple protective shells 506, so that the protective shells 506 rotate with the rotation of the rotating rings 402, and when the wind blades 401 are separated and driven, the two rotating rings 402 are connected to the outer circumferences of the multiple driving strips 407, and the multiple driving strips 407 are respectively fixedly connected to the multiple protective shells 506, so that the protective shells 506 rotate with the rotation of the rotating rings 402. The swivel 402 will rotate stably under the restriction of the two connecting rails 403 and the driving bar 407, and then it can drive the protective shell 506 to rotate stably around the inner concave cylinder 602, and then the refraction angle of the special-shaped ball 504 can be changed to a certain extent, and at the same time, the emission angle of the ultrasonic wave directly emitted from the inner concave cylinder 602 can be changed at intervals, that is, when the protective shell 506 passes by, it is refracted and diffused by the special-shaped ball 504, and after the protective shell 506 passes by, the ultrasonic wave is directly refracted in the corresponding direction to drive away the birds, so that the ultrasonic waves refracted at different angles and at different times are different, thereby reducing the situation where the bird-repelling effect decreases due to the adaptation of the birds to a certain extent.

[0035] A cleaning layer is provided on the end surface of the protective shell 506 facing the outer periphery of the inner concave cylinder 602. The cleaning layer is made of a brush. When the protective shell 506 rotates around the inner concave cylinder 602 with the wind, the outer periphery of the inner concave cylinder 602 is cleaned, thereby reducing the influence of surface dirt on the transmission of ultrasonic waves of the inner concave cylinder 602. An amplifier sleeve 505 made of piezoelectric ceramics is fixedly provided on the inner wall of the protective shell 506 to amplify the ultrasonic waves refracted by the special-shaped ball 504. The connecting rail 403 and the rotating ring 402 are both C-shaped, so that the staff can install and sleeve them on the inner concave cylinder 602 and the two supporting tubes 202.

[0036] A residual tooth ring 501 is fixedly provided on the outer periphery of the two connecting rails 403, and a plurality of gears 502 are meshed on the two residual tooth rings 501. The two groups of gears 502 arranged on the outer periphery of the two connecting rails 403 are respectively fixedly connected with the plurality of bearing shafts 503 passing through the outer periphery of the protective shell 506. When the protective shell 506 is driven by wind to rotate around the inner concave cylinder 602, the plurality of bearing shafts 503 will rotate in cooperation with the gears 502 and the residual tooth rings 501, and then drive the corresponding plurality of groups of special-shaped balls 504 to rotate, so as to further change the refraction angle and the wavelength of the ultrasonic wave emitted after refraction, and then the quality of bird repelling can be further improved to a certain extent.

[0037] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A magnetic core ultrasonic bird repellent device based on line self-powering technology, characterized in that: It comprises a bird repeller (1) and a transmission element (2) connected to an ultrasonic output port (702) of the bird repeller (1); a guide component (6) is provided at the rear end of the transmission element (2) facing away from the bird repeller (1); The guide assembly (6) comprises an inner concave cylinder (602) arranged on the transmission member (2), the inner wall of the inner concave cylinder (602) is a concave surface, positioning plates (604) are fixedly arranged on the inner walls at both ends of the axial direction of the inner concave cylinder (602), a plurality of through grooves are evenly arranged on the positioning plates (604), a refractive member (603) is sleeved inside the inner concave cylinder (602), the two ends of the refractive member (603) are respectively fixedly connected to the two positioning plates (604), and the cross section of the refractive member (603) is a rhombus; A plurality of diffusion components (5) are evenly arranged on the outer periphery of the inner concave cylinder (602), and the diffusion component (5) comprises a protective shell (506) arranged on the outer periphery of the inner concave cylinder (602), a bearing shaft (503) distributed along the axial direction of the inner concave cylinder (602) is arranged inside the protective shell (506), and a plurality of special-shaped balls (504) are evenly arranged on the outer periphery of the bearing shaft (503), and the surfaces of the special-shaped balls (504) are evenly covered with piezoelectric ceramic sheets at different angles.

2. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 1, characterized in that: The transmission element (2) comprises a flexible tube (201) connected to the ultrasonic output port (702) of the bird repeller (1) and a supporting tube (202) fixedly connected to the flexible tube (201); a connecting element (3) for positioning is provided on the supporting tube (202); a resonance tube (203) is sleeved inside the supporting tube (202) and the flexible tube (201); and a frequency-increasing medium (204) is sealed inside the resonance tube (203).

3. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 2, characterized in that: A rigid tube (2011) is provided between the flexible tube (201) and the bird repellent (1); an amplification component (7) vertically disposed on the rigid tube (2011); the amplification component (7) comprises an extension tube (701) fixedly connected to the rigid tube (2011); an output port (702) is provided on a side of the extension tube (701) facing away from the supporting tube (202); and a porous column (703) is provided in the extension tube (701).

4. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 1 or 2, characterized in that: The bird repellers (1) are provided with two, the two bird repellers (1) are arranged symmetrically with respect to a circular point, and the two bird repellers (1) are connected to the inner concave cylinder (602) via a transmission member (2).

5. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 1, characterized in that: An amplifying sleeve (505) is provided on the inner wall of the protective shell (506), and the amplifying sleeve (505) is made of piezoelectric ceramics.

6. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 1, characterized in that: The outer periphery of the inner concave cylinder (602) is provided with a plurality of fixing seats (404) included in the positioning assembly (4); the rear end of the supporting tube (202) is provided with an annular groove (205); the annular groove (205) is clamped with an annular ring (601) provided on the end surface of the inner concave cylinder (602); through holes (405) communicating with the fixing seats (404) are evenly provided on the outer periphery of the annular groove (205) and the annular ring (601); screws (406) are threadedly connected to the through holes (405).

7. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 6, characterized in that: The plurality of protective shells (506) are rotatably connected to the outer periphery of the inner concave cylinder (602); the ends of the plurality of fixed seats (404) away from the through hole (405) are fixedly connected to a connecting rail (403); a rotating ring (402) is rotatably provided inside the connecting rail (403); a driving bar (407) fixedly connected to the outer periphery of the protective shell (506) is fixedly provided on the outer periphery of the rotating ring (402); and a plurality of wind blades (401) are evenly provided on the side of the rotating ring (402) away from the connecting rail (403).

8. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 7, characterized in that: The fixing seats (404) are provided with three groups which are symmetrically arranged in pairs. The three groups of fixing seats (404) are evenly arranged on the outer periphery of the two ends of the annular ring (601), and the connecting rail (403) and the rotating ring (402) are both arranged in a C shape.

9. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 7, characterized in that: The end of the bearing shaft (503) passing through the protective shell (506) is fixedly provided with a gear (502), the gear (502) is meshed with the residual gear ring (501) for transmission, and the residual gear ring (501) is fixedly arranged on the outer peripheral surface of the connecting rail (403).

10. A magnetic core ultrasonic bird repellent device based on line self-powering technology as claimed in claim 7, characterized in that: A cleaning layer is provided on the end surfaces of the plurality of protective shells (506) facing the outer periphery of the inner concave cylinder (602), and the cleaning layer is made of a brush.

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