retractable insulating thorn

Abstract

The retractable insulating thorn belongs to the technical field of power system protection, in order to solve the problem that the activity space of the operator is limited when the high-altitude operation such as routine maintenance, defect treatment and live working is carried out, the anti-bird thorn is easy to interfere with the operation tool, the insulating rope and the human body limbs, and the operator is easily scratched, the application comprises a mounting base, the mounting base is slidably connected with a guide seat on one side, a plurality of thorn needle bodies are arranged on the surface of the guide seat in two layers, two electric push rods are fixedly installed on one side of the mounting base, the guide seat is driven to move through the electric push rod, the automatic retraction and release of the thorn needle body are realized, the operator does not need to manually contact the needle body, and the operation can be completed through the controller, the risk that the needle body interferes with the operation and maintenance operation and scratches the personnel is avoided, the needle body is embedded in the concave plate and is fixed through the clamping piece in the gathering state, the phenomenon of free swinging is prevented, the safety and convenience of the high-altitude operation and maintenance are significantly improved, and the operation time is saved.

Description

Technical Field

[0001] This invention relates to the field of power system protection technology, specifically to retractable and extendable insulated bird spikes. Background Technology

[0002] With the continuous improvement of the ecological environment and the increase in bird populations, the phenomenon of birds nesting, roosting, and defecating on critical locations such as crossarms and insulators of transmission towers is becoming increasingly common. Bird nests often contain conductive debris such as wire and twigs, which can easily cause phase-to-phase short circuits and grounding trips. Bird droppings adhering to insulators can cause flashover discharges, seriously threatening the safe and stable operation of overhead transmission lines. Therefore, bird spikes are widely used as the core physical bird-proofing device in transmission line maintenance. These radially arranged spikes create a spatial barrier, preventing birds from perching and nesting, playing a crucial role in bird pest control.

[0003] Most retractable insulated bird spikes currently available are fixed structures, typically featuring an integrated design of the metal needle body and fixed base. After installation, the needle body is in a fixed radial position, making it difficult to actively retract or unfold. During routine line maintenance, defect handling, and live-line work, workers' movement space is limited, and the bird spikes are prone to interfering with or scraping against operating tools, insulated ropes, and human limbs, easily scratching workers and causing personal injury, significantly increasing the safety hazards of working at heights.

[0004] To address the above issues, a retractable and extendable insulated bird spike was proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a retractable insulated bird spike. Using this device, the problem in the background is that during routine line maintenance, defect handling, and live-line work, the limited space for workers' movement and the bird spikes easily interfere with and scratch the operating tools, insulated ropes, and human limbs, which can easily injure workers.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The retractable insulated bird spikes include a mounting base. A guide seat is slidably connected to one side of the mounting base. Several bird spike bodies are provided on both the upper and lower layers of the guide seat surface. Two electric push rods are fixedly installed on one side of the mounting base, and the output ends of the electric push rods are fixedly connected to the guide seat. One end of each bird spike body is in contact with the mounting base. Torsion springs are provided on both sides of each bird spike body, and one end of each torsion spring is fixedly connected to the guide seat. Several concave plates are fixedly connected to the upper and lower layers of the guide seat surface corresponding to the bird spike bodies, and two snap-fit ​​pieces are installed inside the concave plates.

[0007] Furthermore, the mounting base includes a first annular plate and a connecting plate fixed to one side of the first annular plate. A connecting plate is fixedly installed on the other side of the first annular plate. The guide seats are slidably connected to the connecting plate and the connecting plate. One electric push rod is fixedly connected to the connecting plate, and the other electric push rod is fixedly connected to the connecting plate.

[0008] Furthermore, a second annular plate is fixedly installed on one side of the first annular plate, and the second annular plate is slidably connected to the guide seat. A connecting column is fixedly installed on one side of the second annular plate, and the connecting column is slidably connected to the guide seat.

[0009] Furthermore, the surfaces of the first annular plate and the second annular plate are each provided with a number of first inclined grooves of different lengths, and the end of the bird spike needle body is in contact with the first inclined groove.

[0010] Furthermore, the guide seat includes a first annular shell and a second annular shell fixed to one side of the first annular shell, and the second annular shell communicates with the first annular shell. The first annular shell and the second annular shell are slidably connected to the first annular plate and the second annular plate, respectively.

[0011] Furthermore, several second inclined grooves of different lengths are opened through one side of both the first annular shell and the second annular shell, and the bird spike body is in contact with the second inclined grooves.

[0012] Furthermore, a limiting groove is formed through one side of the second annular shell, and the connecting post is slidably connected to the limiting groove.

[0013] Furthermore, the concave plate has slots on both sides inside, and the snap-fit ​​component is disposed inside the slots.

[0014] Furthermore, the snap-fit ​​component includes a spring and an arc-shaped block fixed to one end of the spring. The spring is fixedly connected inside the slot, and the arc-shaped block is slidably connected to the slot.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The guide seat is moved by an electric push rod, realizing the automatic deployment and retraction of the bird spike needle. Operators do not need to manually touch the needle. They can complete the operation through the controller, avoiding the risk of the needle interfering with maintenance work and scratching personnel.

[0016] 2. When the needle is in the converged state, it is embedded in the concave plate and fixed by the snap-fit ​​component to prevent free swinging, which significantly improves the safety and convenience of high-altitude maintenance operations and saves operation time.

[0017] 3. The double-layered insulated bird barbs form a three-dimensional barrier with staggered upper and lower layers, filling the gaps between the single-layer barbs and covering a wider bird protection area. This effectively prevents birds from stopping and nesting on key parts of the tower, reducing safety hazards such as short circuits and flashover caused by bird activity from the source.

[0018] 4. Equipped with a bidirectional double-limiting structure, it ensures that the needle body unfolds neatly, maintains a stable long-term bird protection effect, and the insulating material eliminates the risk of electrical conduction, making it suitable for live-line working scenarios. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the mounting base structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the mounting base structure of the present invention; Figure 6 This is a schematic diagram of the guide seat structure of the present invention; Figure 7 This is a schematic diagram of the snap-fit ​​structure of the present invention; Figure 8 This is a schematic diagram of the bird needle body limiting structure of the present invention.

[0020] In the diagram: 1. Mounting base; 11. First annular plate; 12. Connecting plate; 13. Connecting plate; 14. Second annular plate; 15. Connecting column; 16. First inclined groove; 2. Guide seat; 21. First annular shell; 22. Second annular shell; 23. Second inclined groove; 24. Limiting groove; 3. Bird spike body; 4. Electric push rod; 5. Torsion spring; 6. Concave plate; 61. Hole and slot; 7. Snap-fit ​​component; 71. Spring; 72. Arc block. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0022] To address the technical problem of limited space for workers during routine line maintenance, defect handling, and live-line work, and the risk of bird spikes interfering with or scraping against tools, insulated ropes, and human limbs, thus easily causing injuries, the following measures are proposed: Figures 1-8 As shown, the following preferred technical solutions are provided: like Figures 1-4As shown, the retractable insulated bird spikes include a mounting base 1, which serves as the supporting foundation for the entire device, firmly fixing it to a designated location on the transmission tower. A guide seat 2 is slidably connected to one side of the mounting base 1. Several bird spikes 3 are arranged on both the upper and lower layers of the guide seat 2 surface. The bird spikes 3 are made of insulating material, reducing the risk of short circuits and induced electric shocks caused by metal needles touching live conductors, meeting the safety distance requirements for live-line work, effectively reducing safety hazards in high-altitude operations, and ensuring the personal safety of workers and the safety of line operation. Compared with the existing single-layer needle layout, this double-layer layout structure has significant advantages in bird prevention and space utilization. The double-layered bird spikes 3 can form a three-dimensional spatial barrier with staggered vertical spacing, covering a wider bird prevention area compared to a single-layer needle layout. It effectively fills the gaps in a single-layer needle layout, preventing birds from stopping and nesting at key parts of the tower from different heights, greatly improving the comprehensiveness and effectiveness of bird prevention, and reducing safety hazards such as line short circuits and flashover caused by bird activity from the source.

[0023] Two electric push rods 4 are fixedly installed on one side of the mounting base 1, and the output end of the electric push rod 4 is fixedly connected to the guide seat 2. The two electric push rods 4 work synchronously, which can provide a uniform and stable driving force to the guide seat 2, ensuring that the guide seat 2 is balanced when moving up and down, avoiding the guide seat 2 from jamming and deflection caused by unilateral force, ensuring the synchronicity and stability of the bird spike needle body 3's retraction and extension, and eliminating problems such as incomplete needle retraction and inconsistent unfolding angles caused by uneven driving. In addition, one end of the bird spike needle body 3 is in contact with the mounting base 1, and torsion springs 5 ​​are provided on both sides of the bird spike needle body 3, with one end of the torsion spring 5 fixedly connected to the guide seat 2. The mounting base 1 can effectively limit the bird spike needle body 3. In its normal state, the guide seat 2 forces the needle body to remain radially extended, ensuring the effectiveness of bird blocking. When the guide seat 2 moves, the contact limiting effect disappears, providing conditions for the bird sting needle body 3 to converge. The structural design is simple and the function is clear. No additional limiting components are required, reducing the complexity of the device. The torsion spring 5 provides stable elastic support for the convergence of the bird sting needle body 3. In its normal state, the torsion spring 5 is in a stored state. When the guide seat 2 moves and the limiting effect disappears, the torsion spring 5 can quickly release the elastic force, driving the bird sting needle body 3 to rotate around the connection point, realizing automatic convergence. No additional driving components are required, saving energy consumption. At the same time, it ensures that the convergence action is fast and smooth, avoiding the situation where the needle body is stuck and cannot be retracted.

[0024] Several concave plates 6 are fixedly connected to the upper and lower layers of the guide seat 2, corresponding to the bird spike needles 3. Two snap-fit ​​pieces 7 are installed inside the concave plates 6. The concave plates 6, corresponding to the bird spike needles 3, provide precise space for the gathered needles, ensuring they are completely embedded within the concave plates 6 after being retracted. This prevents the needles from protruding from the surface of the guide seat 2, further eliminating the risk of needles interfering with maintenance operations and scratching personnel. It also makes the retracted state of the device neater and reduces the impact of high-altitude winds on the needles. Furthermore, the two snap-fit ​​pieces 7 inside the concave plates 6 can clamp and limit the embedded bird spike needles 3, utilizing the snap-fit ​​pieces... The elasticity of the connector 7 firmly fixes the needle body inside the concave plate 6, ensuring that the bird spike needle body 3 will not swing freely due to wind force when it is in the folded state, thus improving the safety of operation and maintenance. Furthermore, the elasticity of the connector 7 is less than that of the torsion spring 5, which can be smoothly squeezed and deformed when the bird spike needle body 3 is folded, ensuring that the bird spike needle body 3 can be smoothly embedded into the concave plate 6. When the bird spike needle body 3 needs to be unfolded, the thrust generated by the mounting base 1 pushes the bird spike needle body 3 to overcome it, thus enabling the bird spike needle body 3 to unfold smoothly. It takes into account both the folding limit and the smooth unfolding, and the limit and unlocking can be achieved without additional operation, improving the ease of use of the device.

[0025] The device is fixed to a designated location on the transmission tower by mounting base 1. Mounting base 1 serves as the supporting foundation for the entire device, ensuring its stable installation on the tower and resisting the influence of external factors such as high-altitude winds. It provides reliable support for subsequent bird prevention operations and deployment / retraction. The default working state of the device is the normal bird prevention stage. At this time, the guide seat 2 is tightly fitted with mounting base 1, and mounting base 1 effectively limits several bird spikes 3, forcing all bird spikes 3 to spread out in a uniform radial pattern. The radially distributed bird spikes 3 can form a dense spatial barrier area in key parts of the tower. By utilizing the physical shielding effect of bird spikes 3, birds are prevented from staying, roosting, or nesting in this area, thus avoiding safety hazards such as line short circuits and flashover caused by bird activities from the source and achieving long-term bird prevention function. In this state, torsion spring 5 is in a stored state, storing elasticity for the subsequent gathering action of bird spikes 3. Concave plate 6 and its internal snap-fit ​​parts 7 are in a standby state and do not affect the radial state of bird spikes 3.

[0026] When routine maintenance, defect handling, or live-line work is required on transmission lines, the operator sends a command through a controller (the controller is existing technology and is not shown in the figure). The controller controls two electric push rods 4 to work synchronously, and their output ends push the guide seat 2 upward, causing the guide seat 2 to move slowly upward along the sliding trajectory of the mounting base 1. As the guide seat 2 moves, the mounting base 1 and the ends of several bird spikes 3 gradually separate, and the limiting effect of the mounting base 1 on the bird spikes 3 disappears. At this time, the torsion spring 5, which is in a stored state, releases its elastic force, causing the bird spikes 3 to rotate around the connection point, so that the bird spikes 3 gradually retract and eventually return to the guide seat 2 or the inside of the tower outline, no longer protruding outside the tower, forming a stable retracted state. During this process, because the elastic force of the torsion spring 5 is greater than the elastic force of the snap fastener 7, the bird spikes 3 will smoothly enter the concave plate 6 during the retraction process, and the snap fastener 7 will be affected by the bird spikes. The compression of body 3 causes slight deformation. After the bird spike body 3 is fully inserted into the concave plate 6, the locking piece 7 resets and locks the bird spike body 3 in place, effectively preventing the bird spike body 3 from swinging freely in the gathered state. This ensures that the bird spike body 3 is always in a safe gathered position during operation. After the line maintenance and operation are completed, the operator controls the electric push rod 4 to work in reverse through the controller. The output end of the electric push rod 4 drives the guide seat 2 to move downward along the mounting base 1 until the guide seat 2 is tightly attached to the mounting base 1 again. During the downward movement of the guide seat 2, the surface of the mounting base 1 will generate an inclined thrust on the bird spike body 3 gathered in the concave plate 6. This thrust overcomes the elasticity of the locking piece 7 and pushes the bird spike body 3 to rotate in the opposite direction around the connection point, gradually detaching from the limit of the concave plate 6. Finally, under the limit of the mounting base 1, it returns to the radial state, and the device re-enters the normal bird protection mode, continuing to play its bird protection role.

[0027] The entire working process requires no direct manual contact with the bird spikes 3, achieving automated deployment and retrieval, making operation convenient. The guide seat 2 is moved via an electric push rod 4, enabling automated deployment and retrieval of the bird spikes 3. During operation, the bird spikes 3 can be gathered within the tower's outline, no longer protruding from the work area, fundamentally avoiding interference or friction between the bird spikes 3 and work-related components or personnel. The bird spikes 3 are driven into the concave plate 6 by the elastic force of the torsion spring 5, and the bird spikes 3 are limited and fixed using the snap-fit ​​component 7, ensuring that the bird spikes 3 do not swing freely in the gathered state, further improving the safety of power transmission line operation and maintenance. Under normal conditions, the bird spikes 3 are radially distributed, forming a dense spatial barrier that effectively prevents birds from stopping and nesting. The bird-proof effect is comparable to existing fixed bird spikes, and the bird spikes 3 can be repeatedly deployed and reset without affecting their bird-proof layout due to deployment and retrieval actions. This avoids the problem of birds adapting to the gaps between fixed spikes to build nests, resulting in a more stable long-term bird-proof effect.

[0028] like Figure 5As shown, the mounting base 1 includes a first annular plate 11 and a connecting plate 12 fixed to one side of the first annular plate 11. A connecting plate 13 is fixedly mounted on the other side of the first annular plate 11. The guide seats 2 are slidably connected to the connecting plate 12 and the connecting plate 13. One electric push rod 4 is fixedly connected to the connecting plate 12, and the other electric push rod 4 is fixedly connected to the connecting plate 13. This layout allows the driving force of the two electric push rods 4 to be applied more evenly to both sides of the guide seats 2, ensuring that the guide seats 2 are under balanced force and avoiding deformation and jamming of the guide seats 2 caused by excessive force on one side, further improving the stability and reliability of the electric push rod 4. At the same time, the connecting plate 12 and the connecting plate 13 provide independent and stable mounting support points for the electric push rod 4, which can effectively disperse the reaction force generated when the electric push rod 4 is working, avoid local deformation of the mounting base 1 caused by concentrated reaction force, ensure long-term stable operation of the electric push rod 4, and reduce the failure rate of the drive components.

[0029] A second annular plate 14 is fixedly installed on one side of the first annular plate 11, and the second annular plate 14 is slidably connected to the guide seat 2. This structure further enhances the sliding stability of the guide seat 2 and the overall structural strength of the device. The second annular plate 14 and the first annular plate 11 form a double-layer annular bearing structure, which further increases the contact area between the mounting base 1 and the iron tower, and at the same time improves the structural rigidity of the mounting base 1 itself. It can better resist the influence of external factors such as high-altitude wind force and vibration, avoid deformation of the mounting base 1, and further ensure the overall operational stability and service life of the device. A connecting column 15 is fixedly installed on one side of the second annular plate 14, and the connecting column 15 is slidably connected to the guide seat 2. This can further limit the movement trajectory of the guide seat 2, prevent the guide seat 2 from shifting left or right or twisting, and ensure that the guide seat 2 always moves smoothly up and down in the preset direction, ensuring the synchronicity and accuracy of the bird spike needle body 3's retraction and extension actions.

[0030] The surfaces of the first annular plate 11 and the second annular plate 14 are each provided with several first inclined grooves 16 of different lengths. The end of the bird spike needle 3 is in contact with the first inclined groove 16. The inclined design of the first inclined groove 16 can provide precise limiting support for the end of the bird spike needle 3. When the guide seat 2 moves downward and pushes the bird spike needle 3 to unfold, the end of the needle is embedded in the first inclined groove 16 of the corresponding size. The inner wall of the inclined groove can form a lateral limiting on the needle, ensuring that each bird spike needle 3 can unfold according to the preset inclined angle, avoiding problems such as needle unfolding angle deviation and skew, so that the needle forms a uniform and regular radial spatial barrier, further improving the bird protection effect.

[0031] like Figure 6As shown, the guide seat 2 includes a first annular shell 21 and a second annular shell 22 fixed to one side of the first annular shell 21, and the second annular shell 22 is connected to the first annular shell 21. The first annular shell 21 and the second annular shell 22 are slidably connected to the first annular plate 11 and the second annular plate 14, respectively. The first annular shell 21 is slidably connected to the first annular plate 11, and the second annular shell 22 is slidably connected to the second annular plate 14, forming a one-to-one corresponding guide fit. It forms a precise fit with the double-layer annular structure of the mounting base 1, and constructs a double-layer corresponding sliding guide system, further restricting the degree of freedom of movement of the guide seat 2 and preventing problems such as torsion and offset of the guide seat 2.

[0032] Several second inclined grooves 23 of different lengths are opened through one side of the first annular shell 21 and the second annular shell 22, and the bird spike 3 is in contact with the second inclined groove 23. The second inclined groove 23, together with the first inclined groove 16 on the first annular plate 11 and the second annular plate 14, form a two-way double limiting system, which limits the end of the bird spike 3 and supports and limits the bird spike 3, preventing the bird spike 3 from tilting, deviating and shaking during the unfolding or retraction process, ensuring that each bird spike 3 always moves according to the preset trajectory, further improving the regularity of the bird spike 3 after unfolding, ensuring the uniformity of the radial spatial barrier and strengthening the bird-proof effect.

[0033] A limiting groove 24 is provided through one side of the second annular shell 22, and the connecting post 15 is slidably connected to the limiting groove 24. The limiting groove 24 and the connecting post 15 are slidably engaged, providing a precise sliding guide trajectory for the connecting post 15.

[0034] To address the technical problem of the bird needle body 3 easily swinging freely in the converged state, such as... Figure 7 and Figure 8 As shown, the following preferred technical solutions are provided: like Figure 7 As shown, the concave plate 6 has slots 61 on both sides inside, and the snap-fit ​​component 7 is set inside the slots 61. The slots 61 provide a precise installation and positioning space for the snap-fit ​​component 7, which can fix and limit the snap-fit ​​component 7, and prevent the snap-fit ​​component 7 from shifting, loosening and falling off during long-term use. This ensures that the snap-fit ​​component 7 is always in the preset clamping position, and ensures that its limiting effect on the bird spike needle 3 is stable and reliable. It also eliminates the hidden dangers of the needle loosening and free movement caused by the shift of the snap-fit ​​component 7, and further improves the stability of the device in the gathering state.

[0035] like Figure 7 and Figure 8As shown, the snap-fit ​​component 7 includes a spring 71 and an arc-shaped block 72 fixed to one end of the spring 71. The spring 71 is fixedly connected inside the slot 61, and the arc-shaped block 72 is slidably connected to the slot 61. The elastic force of the spring 71 enables locking and unlocking. Under normal conditions, the spring 71 is in a naturally extended state, pushing the arc-shaped block 72 to slide along the slot 61, so that a part of the arc-shaped block 72 protrudes out of the slot 61 and extends into the concave plate 6, preparing for the snap-fit ​​of the bird spike needle 3. When the bird spike needle 3 converges into the concave plate 6 under the action of the torsion spring 5, the bird spike needle 3 contacts the arc surface of the arc-shaped block 72, generating a squeezing force on the arc-shaped block 72 into the slot 61. This squeezing force overcomes the elastic force of the spring 71, pushing the spring 71 to compress, and the arc-shaped block 72 slides inward along the slot 61 until it is completely retracted into the slot 61. At this time, the needle can be smoothly embedded. Inside the concave plate 6; when the needle is fully embedded, the squeezing force of the needle on the arc block 72 disappears, the spring 71 releases its elasticity, and pushes the arc block 72 out of the slot 61 again. The inner side of the arc block 72 is tightly attached to the surface of the bird spike needle 3, realizing bidirectional clamping and limiting of the bird spike needle 3. When it is necessary to unlock the needle, the mounting base 1 pushes the bird spike needle 3 to generate an outward thrust. This thrust acts on the arc surface of the arc block 72, overcoming the elasticity of the spring 71 again, causing the arc block 72 to retract into the slot 61. The needle smoothly detaches from the concave plate 6 and unfolds into a radial state under the limiting action of the guide seat 2. The whole process requires no additional operation and is completely linked with the retraction and extension action of the bird spike needle 3 to realize automatic clamping and unlocking, ensuring that the bird spike needle 3 does not swing freely in the gathered state, further improving the safety of power transmission line operation and maintenance.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable insulated bird spike, including a mounting base (1), characterized in that: The mounting base (1) is slidably connected to a guide seat (2) on one side. Several bird spike bodies (3) are provided on both the upper and lower layers of the guide seat (2). Two electric push rods (4) are fixedly installed on one side of the mounting base (1). The output end of the electric push rod (4) is fixedly connected to the guide seat (2). One end of the bird spike body (3) is in contact with the mounting base (1). Torsion springs (5) are provided on both sides of the bird spike body (3). One end of the torsion spring (5) is fixedly connected to the guide seat (2). Several concave plates (6) are fixedly connected on both the upper and lower layers of the guide seat (2) to the bird spike body (3). Two snap-fit ​​pieces (7) are installed inside the concave plates (6).

2. The retractable insulated bird spike according to claim 1, characterized in that: The mounting base (1) includes a first annular plate (11) and a connecting plate (12) fixed on one side of the first annular plate (11). A connecting plate (13) is fixedly installed on the other side of the first annular plate (11). The guide seats (2) are slidably connected to the connecting plate (12) and the connecting plate (13). One of the electric push rods (4) is fixedly connected to the connecting plate (12), and the other electric push rod (4) is fixedly connected to the connecting plate (13).

3. The retractable insulated bird spike according to claim 2, characterized in that: A second annular plate (14) is fixedly installed on one side of the first annular plate (11), and the second annular plate (14) is slidably connected to the guide seat (2). A connecting column (15) is fixedly installed on one side of the second annular plate (14), and the connecting column (15) is slidably connected to the guide seat (2).

4. The retractable insulated bird spike according to claim 3, characterized in that: The first annular plate (11) and the second annular plate (14) are each provided with several first inclined grooves (16) of different lengths, and the end of the bird thorn body (3) is in contact with the first inclined groove (16).

5. The retractable insulated bird spike according to claim 4, characterized in that: The guide seat (2) includes a first annular shell (21) and a second annular shell (22) fixed on one side of the first annular shell (21), and the second annular shell (22) is connected to the first annular shell (21). The first annular shell (21) and the second annular shell (22) are slidably connected to the first annular plate (11) and the second annular plate (14), respectively.

6. The retractable insulated bird spike according to claim 5, characterized in that: The first annular shell (21) and the second annular shell (22) each have several second inclined grooves (23) of different lengths through one side, and the bird thorn body (3) is in contact with the second inclined groove (23).

7. The retractable insulated bird spike according to claim 6, characterized in that: A limiting groove (24) is provided through one side of the second annular shell (22), and the connecting column (15) is slidably connected to the limiting groove (24).

8. The retractable insulated bird spike according to claim 1, characterized in that: The concave plate (6) has slots (61) on both sides inside, and the snap-fit ​​part (7) is located inside the slots (61).

9. The retractable insulated bird spike according to claim 8, characterized in that: The snap-fit ​​component (7) includes a spring (71) and an arc-shaped block (72) fixed to one end of the spring (71). The spring (71) is fixedly connected to the inside of the slot (61), and the arc-shaped block (72) is slidably connected to the slot (61).

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