Bird repelling device for fruit planting

Abstract

The invention belongs to the technical field of bird repelling, and discloses a fruit planting bird repelling device which comprises a support shell, a motor is fixedly connected to the bottom of the inner wall of the support shell, the output end of the motor is fixedly connected with a rotating shaft, a bird repelling shell drives a cross-shaped ring frame and a cross rod to rotate, and the cross rod drives an arc-shaped fan to rotate. The arc-shaped fan interacts with external airflow to generate autorotation motion to drive a cross rod and a reciprocating screw sleeve to rotate together, the reciprocating screw sleeve enables a threaded plate to slide back and forth along the outer wall of a limiting rod, the threaded plate further drives a fixing sleeve frame and a circular truncated cone to do reciprocating motion, and the circular truncated cone drives a reflector to do reciprocating motion. When the reflective mirror is irradiated by sunlight at different positions, the reflection angle of light changes accordingly, and a flickering or flashing effect is generated. The continuously changing light spots show a dazzling effect on human eyes or retinas of birds, which may interfere with vision of the eyes or the retinas of the birds and make the birds feel uncomfortable, so that the birds are effectively prevented from approaching or staying in a specific area.

Description

Technical Field

[0001] The invention belongs to the technical field of bird repelling, and in particular relates to a bird repelling device for fruit planting. Background Art

[0002] When the fruits of fruit trees are ripe, fruit farmers often encounter birds eating the fruits, causing a large number of fruits to be pecked by birds, which reduces the yield of fruit trees to a certain extent and causes a lot of losses to fruit farmers. In order to prevent this problem from continuing to happen, it is necessary to arrange anti-theft and bird-repellent equipment in the orchard, so bird-repellent devices are needed.

[0003] Existing bird-repelling devices use a reflective mirror to refract light to repel birds. However, since the mirror itself does not move, the angle of the reflected light source does not change, meaning the reflected light remains in a fixed direction and position, failing to create a dynamic visual effect. This reduces the bird-repelling effect and affects the quality of fruit production in orchards. Summary of the Invention

[0004] To address the issue of constant reflected light, as mentioned in the background art, lenses are often kept stationary, causing the refracted light to maintain a fixed direction and position. Birds are likely to gradually become accustomed to this fixed reflection, becoming less responsive to the light and gradually weakening the repelling effect. The present invention provides a bird repellent device for fruit cultivation.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a bird-repelling device for fruit planting, comprising a bracket shell, a motor fixedly connected to the bottom of the inner wall of the bracket shell, a rotating shaft fixedly connected to the output end of the motor, a special-shaped sleeve fixedly connected to the top outer wall of the rotating shaft, and the special-shaped sleeve arranged on the outside of the bracket shell, and further comprising a rotating bird-repelling mechanism, the rotating bird-repelling mechanism comprising three connecting rods fixedly connected to the outer wall of the special-shaped sleeve, the end of the connecting rod away from the special-shaped sleeve being fixedly connected to the bird-repelling shell, a cross ring frame fixedly connected to one side of the inner wall of the bird-repelling shell, and a reflective component provided on the inner wall of the cross ring frame for irregularly reflecting light.

[0006] Preferably, the reflective assembly includes a cross bar rotatably connected to the inner wall of the cross ring frame, and an arc-shaped fan is fixedly connected to the outer wall of one end of the cross bar. The arc-shaped fan is arranged on the outside of the bird-repellent shell. The bird-repellent shell drives the cross ring frame and the cross bar to rotate, and the cross bar drives the arc-shaped fan to rotate. The arc-shaped fan interacts with the external airflow to generate self-rotation motion, driving the cross bar and the reciprocating wire sleeve to rotate together.

[0007] Preferably, the outer wall of the middle end of the cross rod away from the arc fan is fixedly connected with a reciprocating wire sleeve, and the outer wall of one end of the reciprocating wire sleeve is threadedly connected with a threaded plate, and both ends of one side of the threaded plate pass through and are slidably connected to a limiting rod, and one end of the limiting rod is fixedly connected to the inner wall of the bird-repellent shell.

[0008] Preferably, one side of the threaded plate is fixedly connected to a fixed sleeve, the end of the fixed sleeve away from the threaded plate is fixedly connected to a truncated table, the outer wall of the truncated table is slidably connected to the inner wall of the bird-repellent shell, and one side inner wall of the truncated table is fixedly connected to a reflector.

[0009] Preferably, a noise component is provided on the outer wall of the cross bar, and the noise component comprises a fixing ring fixedly connected to the outer wall of one end of the cross bar away from the reciprocating wire sleeve, and four round rods are fixedly connected to the outer wall of the fixing ring.

[0010] Preferably, the outer wall of the middle end of the round rod is rotatably connected to a rotating shell, one end of the outer wall of the rotating shell is fixedly connected to a torsion spring, and the end of the torsion spring away from the rotating shell is fixedly connected to a circular plate. During the rotation of the conical bar, it will come into contact with the cross bar of the cross ring frame, and the cross bar squeezes the conical bar, so that the conical bar drives the rotating shell to rotate slightly around the round rod. Under the elastic deformation of the torsion spring, the torsion spring drives the rotating shell to reset after rotation.

[0011] Preferably, the side of the circular plate close to the torsion spring is fixedly connected to one end of the round rod, and flexible pull ropes are fixedly connected to both ends of one side of the inner wall of the rotating shell, and four bell balls are fixedly connected to the outer wall of one end of the flexible pull rope.

[0012] Preferably, a sponge strip is fixedly connected to one side of the outer wall of the rotating shell, and a conical strip is fixedly connected to the side of the outer wall of the rotating shell away from the sponge strip. During the rotation process, the sponge strip will come into contact with the mirror surface of the reflector, thereby cleaning the reflector, effectively removing dust, stains or other impurities on the surface of the reflector, and keeping the reflector clean.

[0013] Preferably, the outer wall of the bird-repellent shell is provided with a cleaning assembly, and the cleaning assembly includes an annular shell fixedly connected to one side of the outer wall of the bird-repellent shell, and a plurality of air holes are respectively opened on the side of the annular shell close to the bird-repellent shell. The top and bottom of the outer wall of the annular shell are connected with a curved pipe, and the end of the curved pipe away from the annular shell is connected to the inner wall of the bird-repellent shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention employs a reflective assembly and is installed in an orchard. The motor is activated, driving the rotating shaft and the shaped sleeve to rapidly rotate. The shaped sleeve further drives the connecting rod and the bird-repellent housing to rotate. As the housing rotates, it also drives the circular table and reflector to rotate. During this process, the reflector is exposed to sunlight, reflecting strong light. Because the angle and intensity of the reflected light constantly change, birds perceive a threat and react with avoidance. Simultaneously, the housing drives the cross-ring frame and crossbar to rotate, which in turn drives the curved fan to rotate. The curved fan interacts with the external airflow, generating rotational motion, which in turn drives the crossbar and reciprocating thread sleeve to rotate. The reciprocating thread sleeve causes the threaded plate to slide back and forth along the outer wall of the limit rod, which in turn drives the fixed frame and circular table to reciprocate. The circular table drives the reflector to reciprocate, causing the angle of light reflection to change depending on the reflector's position and exposure to sunlight, creating a flickering or flashing effect. This ever-changing light spot creates a dazzling effect on the retina of human eyes or birds, which may interfere with their vision and make birds feel uncomfortable, effectively preventing them from approaching or staying in a specific area.

[0016] The present invention utilizes a reflective assembly and a noise-generating assembly to coordinate. As the reflector approaches the cross-ring frame, the crossbar drives the fixed ring and the round rod to rotate, which in turn drives the rotating housing to rotate. The rotating housing then drives the sponge strip to rotate. During rotation, the sponge strip contacts the reflector surface, thereby cleaning the reflector and effectively removing dust, stains, and other impurities from the reflector surface, maintaining the cleanliness of the reflector and ensuring the quality and intensity of reflected light. Furthermore, the rotating housing drives the conical strip to rotate. During rotation, the conical strip contacts the cross-ring frame's crossbars, which squeeze the conical strip, causing the conical strip to slightly rotate the rotating housing around the round rod. The torsion spring elastically deforms the rotating housing, which then resets the rotating housing. During this process, the flexible pull cord within the rotating housing drives the rattle ball, causing it to shake within the housing. The collision between the rattle ball and the housing generates noise, effectively preventing birds from staying near the device. The noise helps repel birds, preventing them from interfering with or damaging the equipment.

[0017] The present invention cooperates with a reflective component, a noise component, and a cleaning component. When the rotating shell drives the sponge strip to rotate and shake left and right around the outer wall of the round rod, impurities adhered to the sponge strip when cleaning the reflector can be cleaned, thereby improving the subsequent cleaning effect of the sponge strip on the reflector. Moreover, when the inner wall of the bird-repelling shell gradually moves away from the cross ring frame, the frustum can squeeze the internal airflow of the bird-repelling shell, so that the airflow enters the interior of the bent pipe, and the airflow enters the interior of the annular shell through the bent pipe. The airflow is ejected to the outside through the air holes provided on the annular shell, thereby ejecting air to the shaking sponge strip, which is helpful for cleaning the sponge strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall side structure of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the special-shaped sleeve of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the bird repellent shell of the present invention;

[0021] Figure 4 This is a schematic diagram of the side structure of the crossbar of the present invention;

[0022] Figure 5 This is a schematic diagram of the front structure of the sponge strip of the present invention;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the fixing ring of the present invention;

[0024] Figure 7 For the present invention Figure 6 A magnified view of middle A;

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the reflector of the present invention.

[0026] In the figure: 1. bracket shell; 2. motor; 3. rotating shaft; 4. special-shaped sleeve; 5. rotating bird-repelling mechanism; 51. connecting rod; 52. bird-repelling shell; 53. cross ring frame; 54. reflective component; 55. noise component; 56. cleaning component; 541. cross bar; 542. arc fan; 543. reciprocating wire sleeve; 544. threaded plate; 545. limit rod; 546. fixed sleeve; 547. frustum; 548. reflector; 551. fixing ring; 552. round rod; 553. rotating shell; 554. round plate; 555. torsion spring; 556. flexible pull rope; 559. rattle ball; 557. sponge strip; 558. conical strip; 561. annular shell; 562. air hole; 563. elbow. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figures 1 to 8As shown, the present invention provides a bird-repelling device for fruit planting, comprising a bracket shell 1, a motor 2 fixedly connected to the bottom of the inner wall of the bracket shell 1, a rotating shaft 3 fixedly connected to the output end of the motor 2, a special-shaped sleeve 4 fixedly connected to the top outer wall of the rotating shaft 3, and the special-shaped sleeve 4 is arranged on the outside of the bracket shell 1, and further comprising;

[0029] The rotating bird-repelling mechanism 5 includes three connecting rods 51 fixedly connected to the outer wall of the special-shaped sleeve 4. The end of the connecting rod 51 away from the special-shaped sleeve 4 is fixedly connected to the bird-repelling shell 52. A cross ring frame 53 is fixedly connected to one side of the inner wall of the bird-repelling shell 52. The inner wall of the cross ring frame 53 is provided with a reflective component 54 for irregularly reflecting light.

[0030] The reflective assembly 54 includes a cross bar 541 rotatably connected to the inner wall of the cross ring frame 53 . An arc fan 542 is fixedly connected to the outer wall of one end of the cross bar 541 . The arc fan 542 is arranged outside the bird-repelling shell 52 .

[0031] The outer wall of the middle end of the cross bar 541 away from the arc fan 542 is fixedly connected to a reciprocating wire sleeve 543, and the outer wall of one end of the reciprocating wire sleeve 543 is threadedly connected to a threaded plate 544. Both ends of one side of the threaded plate 544 pass through and are slidably connected to a limiting rod 545, and one end of the limiting rod 545 is fixedly connected to the inner wall of the bird-repellent shell 52.

[0032] Using this solution, the bird-repellent housing 52 drives the cross-ring frame 53 and crossbar 541 to rotate, which in turn drives the arc-shaped fan 542 to rotate. The arc-shaped fan 542 interacts with the external airflow, generating rotational motion, which drives the crossbar 541 and reciprocating thread sleeve 543 to rotate together. The reciprocating thread sleeve 543 causes the threaded plate 544 to slide back and forth along the outer wall of the limiting rod 545.

[0033] A fixed sleeve 546 is fixedly connected to one side of the threaded plate 544, and a round table 547 is fixedly connected to the end of the fixed sleeve 546 away from the threaded plate 544. The outer wall of the round table 547 is slidably connected to the inner wall of the bird-repellent shell 52, and a reflector 548 is fixedly connected to the inner wall of one side of the round table 547.

[0034] In this solution, the threaded plate 544 further drives the fixed sleeve 546 and the circular platform 547 to reciprocate. The circular platform 547 drives the reflector 548 to reciprocate, causing the reflector 548 to reflect light at varying angles depending on the position of the reflector and the sunlight, creating a flickering or shimmering effect. This constantly changing light spot can appear dazzling on the retinas of humans and birds, potentially interfering with vision and causing discomfort to the birds.

[0035] like Figures 1 to 8As shown, a noise assembly 55 is provided on the outer wall of the cross bar 541. The noise assembly 55 includes a fixing ring 551 fixedly connected to the outer wall of one end of the cross bar 541 away from the reciprocating wire sleeve 543. Four round rods 552 are fixedly connected to the outer wall of the fixing ring 551.

[0036] The outer wall of the middle end of the round rod 552 is rotatably connected to the rotating shell 553 . One end of the outer wall of the rotating shell 553 is fixedly connected to a torsion spring 555 . The end of the torsion spring 555 away from the rotating shell 553 is fixedly connected to a circular plate 554 .

[0037] The above solution is adopted: due to the elastic deformation of the torsion spring 555, the torsion spring 555 drives the rotating shell 553 to reset after rotation. During this process, the rotating shell 553 will cause the flexible pull rope 556 inside the rotating shell 553 to drive the ringing ball 559 to shake inside the rotating shell 553, so that the ringing ball 559 will generate noise during the collision with the rotating shell 553, which can effectively prevent birds from staying near the device.

[0038] The side of the circular plate 554 close to the torsion spring 555 is fixedly connected to one end of the round rod 552, and both ends of the inner wall of the rotating shell 553 are fixedly connected to the flexible pull rope 556, and the outer wall of one end of the flexible pull rope 556 is fixedly connected to four bell balls 559.

[0039] The above solution is adopted: the material of the flexible pull rope is flexible and has the ability to elastically stretch and deform, which makes it convenient for the bell ball 559 to collide with the inside of the rotating shell 553 when moving.

[0040] A sponge strip 557 is fixedly connected to one side of the outer wall of the rotating shell 553 , and a tapered strip 558 is fixedly connected to one side of the outer wall of the rotating shell 553 away from the sponge strip 557 .

[0041] The above solution is adopted: the rotating shell 553 drives the conical bar 558 to rotate. During the rotation process, the conical bar 558 will come into contact with the cross bar of the cross ring frame 53. The cross bar squeezes the conical bar 558, so that the conical bar 558 drives the rotating shell 553 to rotate slightly around the round rod 552.

[0042] A cleaning assembly 56 is provided on the outer wall of the bird-repellent shell 52. The cleaning assembly 56 includes an annular shell 561 fixedly connected to one side of the outer wall of the bird-repellent shell 52. A plurality of air holes 562 are respectively opened on the side of the annular shell 561 close to the bird-repellent shell 52. The top and bottom of the outer wall of the annular shell 561 are connected to a curved pipe 563. The end of the curved pipe 563 away from the annular shell 561 is connected to the inner wall of the bird-repellent shell 52.

[0043] The above solution is adopted: when the cone 547 gradually moves away from the cross ring frame 53 on the inner wall of the bird-repellent shell 52, the cone 547 will exert a squeezing effect on the airflow inside the bird-repellent shell 52, prompting the airflow to enter the bend 563. After passing through the bend 563, the airflow flows into the interior of the annular shell 561 and is ejected to the outside through the air holes 562 provided on the annular shell 561. This airflow ejection process can provide additional cleaning power to the shaking sponge bar 557. Through the ejection action, the airflow helps the sponge bar 557 to more thoroughly clean the impurities attached to the reflector 548, further improving the cleaning effect of the sponge bar 557, thereby maintaining the efficient working state of the reflector.

[0044] The working principle and use process of the present invention:

[0045] The device is installed in an orchard and motor 2 is started. The motor drives the rotating shaft 3 and the special-shaped sleeve 4 to rotate rapidly, which in turn drives the connecting rod 51 and the bird-repelling shell 52 to rotate. As the bird-repelling shell 52 rotates, it also drives the circular table 547 and the reflector 548 to rotate. During this process, the reflector 548 is exposed to sunlight, reflecting strong light. Because the angle and intensity of the reflected light constantly change, birds feel threatened and react with avoidance. At the same time, the bird-repelling shell 52 drives the cross ring frame 53 and the cross bar 541 to rotate, and the cross bar 541 drives the curved fan 542 to rotate. The curved fan 542 interacts with the external airflow, generating rotational motion, which drives the cross bar 541 and the reciprocating wire sleeve 543 to rotate together. The reciprocating wire sleeve 543 causes the threaded plate 544 to slide back and forth along the outer wall of the limit rod 545. The threaded plate 544 further drives the fixed sleeve 546 and the circular table 547 to reciprocate. The circular platform 547 drives the reflector 548 to move back and forth, causing the reflective angle of the reflector 548 to change depending on the position of the reflector 548 and the sunlight, resulting in a flickering or shimmering effect. This constantly changing light spot appears dazzling on the retina of the human eye or bird, potentially interfering with their vision and causing discomfort to the birds, thereby effectively preventing them from approaching or staying in a specific area.

[0046] When the reflector 548 approaches the cross ring frame 53, the cross bar 541 drives the fixed ring 551 and the round rod 552 to rotate, the round rod 552 drives the rotating shell 553 to rotate, and the rotating shell 553 drives the sponge bar 557 to rotate. During the rotation process, the sponge bar 557 will come into contact with the mirror surface of the reflector 548, thereby cleaning the reflector 548, which can effectively remove dust, stains or other impurities on the surface of the reflector 548, keep the reflector 548 clean, and ensure the quality and intensity of the reflected light. The rotating housing 553 drives the conical bar 558 to rotate. During this rotation, the conical bar 558 contacts the cross bar of the cross ring frame 53. The cross bar squeezes the conical bar 558, causing the conical bar 558 to drive the rotating housing 553 to rotate slightly around the round rod 552. The torsion spring 555 elastically deforms the rotating housing 553, which resets the rotating housing 553. During this process, the flexible pull rope 556 inside the rotating housing 553 drives the ring ball 559 to shake inside the rotating housing 553. The collision between the ring ball 559 and the rotating housing 553 produces noise, which effectively prevents birds from staying near the device. The noise helps to drive away birds and prevent them from interfering with or damaging the equipment.

[0047] When the rotating shell 553 drives the sponge strip 557 to rotate and shake left and right around the outer wall of the round rod 552, the impurities adhered to the sponge strip 557 when cleaning the reflector 548 can be cleaned, thereby improving the subsequent cleaning effect of the sponge strip 557 on the reflector 548. Moreover, when the inner wall of the bird-repelling shell 52 gradually moves away from the cross ring frame 53, the frustum 547 can squeeze the internal airflow of the bird-repelling shell 52, so that the airflow enters the interior of the bend 563, and the airflow enters the interior of the annular shell 561 through the bend 563. The airflow is ejected to the outside through the air holes 562 provided at the annular shell 561, thereby ejecting air to the shaking sponge strip 557, which helps to clean the sponge strip 557.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bird-repelling device for fruit planting, comprising a bracket shell (1), a motor (2) fixedly connected to the bottom of the inner wall of the bracket shell (1), a rotating shaft (3) fixedly connected to the output end of the motor (2), a special-shaped sleeve (4) fixedly connected to the top outer wall of the rotating shaft (3), and the special-shaped sleeve (4) arranged on the outside of the bracket shell (1), characterized in that: Also includes; A rotating bird-repelling mechanism (5) comprises three connecting rods (51) fixedly connected to the outer wall of a special-shaped sleeve (4); one end of the connecting rod (51) away from the special-shaped sleeve (4) is fixedly connected to a bird-repelling shell (52); one side of the inner wall of the bird-repelling shell (52) is fixedly connected to a cross ring frame (53); and the inner wall of the cross ring frame (53) is provided with a reflective component (54) for irregularly reflecting light.

2. The bird-repelling device for fruit planting according to claim 1, characterized in that: The reflective assembly (54) comprises a crossbar (541) rotatably connected to the inner wall of the cross ring frame (53); an outer wall at one end of the crossbar (541) is fixedly connected to an arc-shaped fan (542); and the arc-shaped fan (542) is arranged outside the bird-repelling shell (52).

3. The bird-repelling device for fruit planting according to claim 2, characterized in that: The outer wall of the middle end of the cross bar (541) away from the arc fan (542) is fixedly connected to a reciprocating wire sleeve (543), and the outer wall of one end of the reciprocating wire sleeve (543) is threadedly connected to a threaded plate (544), and both ends of one side of the threaded plate (544) are penetrated and slidably connected to a limiting rod (545), and one end of the limiting rod (545) is fixedly connected to the inner wall of the bird-repelling shell (52).

4. The bird-repelling device for fruit planting according to claim 3, characterized in that: One side of the threaded plate (544) is fixedly connected to a fixed sleeve (546), and one end of the fixed sleeve (546) away from the threaded plate (544) is fixedly connected to a round table (547). The outer wall of the round table (547) is slidably connected to the inner wall of the bird-repelling shell (52), and one side inner wall of the round table (547) is fixedly connected to a reflector (548).

5. The bird-repelling device for fruit planting according to claim 4, characterized in that: The outer wall of the cross bar (541) is provided with a noise component (55), and the noise component (55) includes a fixing ring (551) fixedly connected to the outer wall of one end of the cross bar (541) away from the reciprocating wire sleeve (543), and the outer wall of the fixing ring (551) is respectively fixedly connected to four round rods (552).

6. The bird-repelling device for fruit planting according to claim 5, characterized in that: The outer wall of the middle end of the round rod (552) is rotatably connected to a rotating shell (553), one end of the outer wall of the rotating shell (553) is fixedly connected to a torsion spring (555), and one end of the torsion spring (555) away from the rotating shell (553) is fixedly connected to a circular plate (554).

7. The bird-repelling device for fruit planting according to claim 6, characterized in that: The side of the circular plate (554) close to the torsion spring (555) is fixedly connected to one end of the round rod (552), and both ends of the inner wall of the rotating shell (553) are fixedly connected to flexible pull ropes (556), and the outer wall of one end of the flexible pull rope (556) is respectively fixedly connected to four ringing balls (559).

8. The bird-repelling device for fruit planting according to claim 7, characterized in that: A sponge strip (557) is fixedly connected to one side of the outer wall of the rotating shell (553), and a conical strip (558) is fixedly connected to one side of the outer wall of the rotating shell (553) away from the sponge strip (557).

9. The bird-repelling device for fruit planting according to claim 8, characterized in that: The outer wall of the bird-repelling shell (52) is provided with a cleaning assembly (56), and the cleaning assembly (56) includes an annular shell (561) fixedly connected to one side of the outer wall of the bird-repelling shell (52), and a plurality of air holes (562) are respectively opened on the side of the annular shell (561) close to the bird-repelling shell (52), and the top and bottom of the outer wall of the annular shell (561) are both connected with a curved pipe (563), and one end of the curved pipe (563) away from the annular shell (561) is connected to the inner wall of the bird-repelling shell (52).

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