A power transmission terminal insulator surface automatic cleaning mechanism

Abstract

The utility model relates to insulator surface cleaning technical field, concretely is a kind of power transmission terminal insulator surface automatic cleaning mechanism, including the cleaning strip embedded in umbrella skirt and the double mode excitation mechanism being set to the outside of cleaning strip. Cleaning strip includes the conductive heat conduction layer, gradient hardness layer and strip body embedded in umbrella skirt in order from inside to outside. Double mode excitation mechanism includes electric excitation component, light excitation component and the control component for controlling electric excitation component and light excitation component switching and operation;When energized electric excitation component or light illumination light excitation component, cleaning strip radial bending, umbrella skirt vibration removes surface dirt. The patent cleaning efficiency is high, safety is good, overall structure is simple, flexibility is high, has stronger engineering applicability, the radial bending of cleaning strip drives the vibration of umbrella skirt soft controllable, can avoid the mechanical damage to umbrella skirt, guarantee the integrity and service life of insulator structure.

Description

Technical Field

[0001] This utility model relates to the field of insulator surface cleaning technology, specifically to an automatic cleaning mechanism for the surface of insulators in power transmission terminals. Background Technology

[0002] As a key insulating component of high-voltage transmission and transformation lines, the surface insulation performance of insulators directly determines the safety of power grid operation. During long-term outdoor operation, dust, industrial pollutants, bird droppings, and other contaminants easily accumulate on the surface of insulators. In humid environments, conductive channels can form, leading to a drop in flashover voltage and causing accidents such as line tripping and power outages.

[0003] The existing insulator structure includes: a core rod, a silicone rubber shed sleeve on the outside of the core rod, and end fittings at both ends of the core rod.

[0004] Currently, insulator surface cleaning mainly relies on the following methods: manual cleaning requires personnel to work at heights, which is not only inefficient but also carries the safety risks of climbing; mechanical cleaning mostly uses rigid brushes for friction, which can easily damage the insulation layer of the sheds, and the equipment is complex and bulky, making it difficult to move flexibly on high-voltage lines and thoroughly clean the edges of the sheds and other hard-to-reach corners; natural cleaning depends on rainfall, and its effectiveness is very limited in arid or heavily polluted areas; chemical cleaning requires the use of special agents, which poses a risk of corroding the insulator material, and usually requires power outages, affecting normal power supply. Utility Model Content

[0005] In view of the problems of low efficiency, safety risks and easy damage to the insulation layer of the shed in the existing technology, the present invention provides an automatic cleaning mechanism for the surface of the insulator of the power transmission terminal. By cooperating with the cleaning strip and the dual-mode excitation mechanism, the cleaning strip can bend radially under the action of electrical connection or light excitation, and bounce the shed to vibrate, thereby removing the dirt on the shed and realizing automatic cleaning of the insulator surface.

[0006] This utility model provides an automatic cleaning mechanism for the surface of a power transmission terminal insulator, characterized in that it includes: a cleaning strip embedded in the skirt and a dual-mode excitation mechanism disposed outside the cleaning strip.

[0007] The cleaning strip comprises, from the inside out, a conductive and thermally conductive layer, a gradient hardness layer, and the strip body, which are sequentially embedded within the skirt.

[0008] The dual-mode excitation mechanism includes: an electrical excitation component, an optical excitation component, and a control component for controlling the switching and operation of the electrical excitation component and the optical excitation component; when the electrical excitation component is energized or the optical excitation component is illuminated, the cleaning strip bends radially, and the umbrella skirt vibrates to remove surface dirt.

[0009] Furthermore, the cleaning strip has a segmented structure, and several segments of the cleaning strip are connected in series by flexible polyimide connecting sheets, the thickness of which is 0.1~0.2mm.

[0010] Furthermore, the electrically excited component includes: a flexible conductive film attached to the inner side of the cleaning strip, a low-voltage power-taking unit fixedly installed at the power-taking interface at the end of the insulator, and an overcurrent protection unit for protecting the safety of the component. The low-voltage power-taking unit is connected to the flexible conductive film through a wire.

[0011] Furthermore, the light excitation component includes: a lamp holder bracket spanning across the underside of several umbrella skirts, a solar photovoltaic panel mounted on the lamp holder bracket via a sliding groove, a UV lamp assembly positioned above the solar photovoltaic panel, and a battery mounted on the lamp holder bracket for storing electrical energy, wherein the solar photovoltaic panel slides out of the lamp holder bracket to collect solar energy.

[0012] Furthermore, the umbrella skirt is provided with an annular insert groove, and a plurality of radially distributed engaging grooves are provided in the annular insert groove. Each section of the cleaning strip is provided with a protrusion that mates with the engaging groove. The cleaning strip is embedded into the annular insert groove through the engagement of the engaging groove and the protrusion.

[0013] Furthermore, the inner wall of the annular insert groove is provided with a sealing strip to prevent the cleaning strip from sliding, and the bottom of the annular insert groove is provided with a flexible buffer pad to buffer the radial bending stress of the cleaning strip.

[0014] Furthermore, an epoxy adhesive layer for filling and fastening is coated between the annular insert groove and the cleaning strip. The epoxy adhesive layer includes 1-2 wt% nano-silica particles with a particle size of 50-100 nm.

[0015] Furthermore, the strip body is made of liquid crystal elastomer material.

[0016] Furthermore, it also includes an anti-aging shell disposed on the outside of the low-voltage power supply unit, the bottom of the anti-aging shell being provided with a plurality of drainage holes, and the inner wall of the anti-aging shell being provided with drainage grooves corresponding to the plurality of drainage holes.

[0017] Furthermore, the control component includes an excitation unit for controlling the operation of the electrical excitation component and the optical excitation component, and a switching unit for controlling the switching between the electrical excitation component and the optical excitation component.

[0018] The excitation unit includes: a temperature sensor for detecting ambient temperature, a humidity sensor for detecting ambient humidity, and a control switch electrically connected to the temperature sensor and the humidity sensor respectively.

[0019] The switching unit includes: a detection device for detecting the light energy status of the light excitation component and a power switching switch electrically connected to the detection device.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model patent effectively achieves automated cleaning of insulator surfaces through the design of a cleaning strip and a dual-excitation mechanism. Specifically, both the optical excitation component and the electrical excitation component can excite the cleaning strip. Upon electrical or optical excitation, the cleaning strip undergoes radial bending deformation, and through its embedded installation with the insulator skirts, it drives the skirts to vibrate synchronously. This efficiently shakes off various types of dirt adhering to the surface without manual intervention. This patent not only boasts significantly higher cleaning efficiency than traditional manual sweeping or rinsing methods but also offers excellent safety, making it particularly suitable for high-voltage live-line working environments. Furthermore, the overall mechanism features a simple design, is lightweight, highly flexible, easy to install and maintain, and has strong engineering applicability. In addition, the radial bending of the cleaning strip causes gentle and controllable vibration of the skirts, avoiding mechanical damage to the skirts and effectively ensuring the integrity of the insulator structure and its long service life. It possesses excellent comprehensive technical benefits and application prospects.

[0022] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a structural diagram of an insulator with an automatic surface cleaning mechanism.

[0025] Figure 2 This is a structural diagram of an automatic surface cleaning mechanism.

[0026] Figure 3 This is a structural diagram of an insulator component with an automatic surface cleaning mechanism.

[0027] Figure 4 This is a schematic diagram of the cleaning strip structure.

[0028] Figure 5 Diagram of the outer shell structure for anti-aging purposes.

[0029] The diagram is labeled as follows: 1. Cleaning strip; 11. Conductive and thermally conductive layer; 12. Gradient hardness layer; 13. Strip body;

[0030] 21. Electrically excited component; 211. Flexible conductive film; 212. Low-voltage power supply unit; 22. Photoelectric excited component; 221. Lamp holder bracket; 222. Solar photovoltaic panel; 223. Ultraviolet lamp assembly;

[0031] 3. Annular mounting groove; 31. Engaging groove; 4. Anti-aging shell; 41. Drainage hole; 42. Drainage groove; 5. Core rod; 6. Umbrella skirt; 7. End fittings. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Please refer to Figures 1-5 This utility model provides an automatic cleaning mechanism for the surface of a power transmission terminal insulator, including: a cleaning strip 1 embedded in the umbrella skirt 6 and a dual-mode excitation mechanism disposed outside the cleaning strip 1.

[0036] The dual-mode excitation mechanism includes an electric excitation component 21, an optical excitation component 22, and a control component for controlling the switching and operation of the electric excitation component 21 and the optical excitation component 22; when the electric excitation component 21 is energized or the optical excitation component 22 is illuminated, the cleaning strip 1 bends radially and the umbrella skirt 6 vibrates to remove surface dirt.

[0037] This embodiment effectively achieves automated cleaning of the insulator surface through the setup of the cleaning strip 1 and the dual-excitation mechanism. Specifically, both the optical excitation component 22 and the electrical excitation component 21 can excite the cleaning strip 1. After being electrically or optically excited, the cleaning strip 1 undergoes radial bending deformation, and through its embedded installation with the shed 6, it drives the shed 6 to vibrate synchronously. Thus, without relying on manual intervention, it efficiently shakes off various types of dirt adhering to its surface. This patent not only has significantly higher cleaning efficiency than traditional manual sweeping or rinsing methods, but also possesses excellent safety, making it particularly suitable for high-voltage live-line working environments. Furthermore, the overall mechanism has a simple design, is lightweight, highly flexible, easy to install and maintain, and has strong engineering applicability. In addition, the radial bending of the cleaning strip 1 causes the shed 6 to vibrate gently and controllably, avoiding mechanical damage to the shed 6, effectively ensuring the integrity of the insulator structure and its long service life, demonstrating good comprehensive technical benefits and application prospects.

[0038] In this embodiment, the dual-mode excitation mechanism enables the cleaning strip 1 to undergo radial bending deformation under light or when electrically connected. The radial bending deformation of the cleaning strip 1 causes the skirt 6 to vibrate, which in turn shakes off the dirt covering the surface of the skirt 6, thus achieving automatic cleaning of the insulator surface.

[0039] like Figure 4 As shown, the cleaning strip 1 includes: a conductive and thermally conductive layer 11, a gradient hardness layer 12, and a strip body 13, which are sequentially embedded in the umbrella skirt 6 from the inside to the outside.

[0040] Furthermore, the strip body 13 is made of liquid crystal elastomer material, and the cleaning strip 1 has a segmented structure. Several segments of the cleaning strip 1 are connected in series by flexible polyimide connecting sheets, and the thickness of the flexible polyimide connecting sheets is 0.1~0.2mm.

[0041] In a preferred embodiment, the strip body 13 is made of a side-chain liquid crystal elastomer composite material, which includes: 40-50 wt% of 4-cyanobiphenyl liquid crystal monomers, 30-40 wt% of hydroxyl-terminated polydimethylsiloxane elastomer matrix, 14-10 wt% of dicumyl peroxide-trimethylolpropane triacrylate crosslinking agent, 1-2 wt% of nano-titanium dioxide, and 0.5-1 wt% of single-walled carbon nanotubes.

[0042] Furthermore, the molecular aspect ratio of the 4-cyanobiphenyl liquid crystal monomer is ≥20. The addition of nano-titanium dioxide enhances the UV resistance of the strip body 13, thereby enhancing its anti-aging ability. The addition of single-walled carbon nanotubes ensures the conductivity of the strip body 13, further ensuring the smoothness and flexibility of radial bending of the strip body 13 after being energized, and ensuring the smoothness of the vibration of the umbrella skirt 6.

[0043] Furthermore, the gradient hardness layer 12 is laminated onto the inner side of the strip body 13 facing the mandrel 5, with a thickness of 0.3~0.5mm. The gradient hardness layer 12 uses polyurethane elastomer as the substrate, and a hardness gradient is formed by adjusting the ratio of calcium carbonate filler on the inner and outer sides, with a gradient transition zone width of 0.1~0.2mm. The gradient hardness layer 12 allows the strip body 13 to balance deformation flexibility and structural support when radially bent, avoiding damage caused by excessive deformation.

[0044] Furthermore, the conductive and thermally conductive layer 11 is disposed inside the gradient hardness layer 12. Its material is a composite coating of graphene and carbon nanotubes, wherein the mass ratio of graphene to carbon nanotubes is 2:1. The conductive and thermally conductive layer 11 is coated on the inner side of the gradient hardness layer 12 by a film-forming agent. The dry film thickness of the conductive and thermally conductive layer 11 is 5~10μm, the volume resistivity is ≤1×10⁻³Ω・cm, and the thermal conductivity is ≥200W / (m・K). This ensures uniform current transmission and accelerates the diffusion of heat during the excitation of the electric excitation component 21, enhancing the bending response of the strip body 13 and thus enhancing the vibration response speed of the umbrella skirt 6.

[0045] To further clarify, the film-forming agent can be water-based polyurethane or other materials that can achieve the above-mentioned film-forming effect. There is no absolute limitation on the selection of the film-forming agent here.

[0046] Furthermore, the flexible polyimide connecting sheet has a thickness of 0.1-0.2mm and a length of 5-8mm. It is fixedly installed to the cleaning strip 1 in sections by laser welding, with a welding strength ≥5MPa. The gaps are filled with silicone rubber gaskets, and the silicone rubber gaskets have a Shore hardness of 40HA.

[0047] Furthermore, the segment length of the cleaning strip 1 is 10-15mm, with a 0.5-1mm expansion gap between segments; the glass transition temperature of the cleaning strip 1 is 50-60℃, suitable for the current flow of the electrical excitation component 21; the ultraviolet light response wavelength is 365-405nm, suitable for the light irradiation of the optical excitation component 22; and the response time is ≤1s. When the electrical excitation component 21 or the optical excitation component 22 electrically or optically excites the cleaning strip 1, the cleaning strip 1 bends radially, causing the umbrella skirt 6 to vibrate accordingly, with a vibration recovery rate ≥95%, i.e., vibration loss ≤5% after 100,000 deformation cycles; when the electrical excitation component 21 or the optical excitation component 22 stops exciting the cleaning strip 1, the cleaning strip 1 changes from a radially bent state to a straightened state, with a reset time ≤2s.

[0048] like Figure 1 , Figure 3 and Figure 4As shown, the electrically excited assembly 21 includes: a flexible conductive film 211 attached to the inner side of the cleaning strip 1, a low-voltage power taking unit 212 fixedly installed at the power taking interface at the end of the insulator, and an overcurrent protection unit for protecting the safety of the component. The low-voltage power taking unit 212 and the flexible conductive film 211 are connected by a wire.

[0049] In this embodiment, the low-voltage power unit 212 uniformly obtains current, and then transmits the obtained current to the flexible conductive film 211 through the wire, thereby electrically stimulating the cleaning strip 1. The setting of the conductive and heat-conducting layer 11 accelerates the electrical stimulation of the cleaning strip 1 and controls the radial bending of the cleaning strip 1, so that the umbrella skirt 6 vibrates and shakes off the dirt attached to its surface, thereby realizing the automatic cleaning of the insulator surface.

[0050] Furthermore, the flexible conductive film 211 is attached to the inner side of the conductive and thermally conductive layer 11, and is made of graphene-based material with a thickness of ≤0.1mm. The surface is coated with a high-temperature resistant silicone resin insulating protective layer. When the flexible conductive film 211 is electrically connected, it can directly conduct current to the conductive and thermally conductive layer 11, accelerating the response time of the radial bending of the cleaning strip 1.

[0051] Furthermore, the flexible conductive film 211 can be connected to the low-voltage power extraction unit 212 via a wire groove or through the gap between the core rod and the umbrella skirt. The installation method of the wire is not absolutely limited here. The diameter of the wire is 0.5~0.8mm, and it is covered with a 105℃ heat-resistant polyvinyl chloride insulating tube. One end of the wire is soldered to the flexible conductive film 211 with conductive silver paste, and the other end is connected to the low-voltage power extraction unit 212.

[0052] Furthermore, the overcurrent protection unit uses a 150mA self-resetting fuse, which is connected in series in the electrical circuit to prevent damage from overcurrent.

[0053] like Figure 1 As shown, the light excitation component 22 includes: a lamp holder bracket 221 spanning across the underside of several umbrella skirts 6, a solar photovoltaic panel 222 mounted on the lamp holder bracket 221 via a sliding groove, a UV lamp group 223 disposed above the solar photovoltaic panel 222, and a battery mounted on the lamp holder bracket 221 for storing electrical energy. The solar photovoltaic panel 222 slides out of the lamp holder bracket 221 to collect solar energy.

[0054] In this embodiment, the solar photovoltaic panel 222 is slid out of the lamp holder bracket 221 by the sliding groove component, so that the solar photovoltaic panel 222 can contact the sunlight over a large area and fully collect solar energy, and convert the collected solar energy into electrical energy and store it in the battery. When it is necessary to clean the dirt on the insulator, the battery is electrically connected to the ultraviolet lamp group 223, so that the ultraviolet lamp group 223 irradiates the umbrella skirt 6. At this time, the cleaning strip 1 embedded therein is illuminated and produces radial bending, so that the umbrella skirt 6 vibrates and shakes off the dirt attached to its surface, thereby realizing automatic cleaning of the insulator surface.

[0055] Furthermore, the solar photovoltaic panel 222 is made of monocrystalline silicon and covered with anti-glare tempered glass; the ultraviolet lamp group 223 includes 4-6 low-power ultraviolet LEDs with an ultraviolet wavelength of 365~405nm and an irradiance of ≥100mW / cm². The ultraviolet LEDs are covered with an optical concentrator made of polycarbonate, which can greatly improve the utilization rate of light.

[0056] Furthermore, the lamp holder bracket 221 is a foldable component. After unfolding, it is hung on the underside of the umbrella skirt 6. The angle between the bottom of the unfolded lamp holder bracket 221 and the insulator end fitting 7 is 30°~45°, ensuring that the light from the ultraviolet lamp group can be evenly irradiated onto the umbrella skirt 6, further ensuring the uniformity of light received by the cleaning strip 1 and the uniformity of vibration of the umbrella skirt 6.

[0057] like Figure 2 As shown, the umbrella skirt 6 has an annular insert groove 3, and radially distributed engaging grooves 31 are provided in the annular insert groove 3. Each cleaning strip 1 is provided with a protrusion that cooperates with the engaging groove 31. The cleaning strip 1 is embedded into the annular insert groove 3 through the cooperation of the engaging groove 31 and the protrusion.

[0058] Furthermore, the inner wall of the annular insert groove 3 is provided with a sealing strip to prevent the cleaning strip 1 from sliding, and the bottom of the annular insert groove 3 is provided with a flexible buffer pad to buffer the radial bending stress of the cleaning strip 1.

[0059] Furthermore, an epoxy adhesive layer for filling and fastening is coated between the annular insert groove 3 and the cleaning strip 1. The epoxy adhesive layer includes 1-2 wt% nano-silica particles with a particle size of 50-100 nm.

[0060] In this embodiment, the protrusion of the cleaning strip 1 is inserted into the engaging groove 31 to achieve the engaging installation of the cleaning strip 1 and the annular mounting groove 3. The sealing strip effectively prevents the cleaning strip 1 from sliding axially when it is bent radially, while the flexible buffer pad is used to absorb the impact load generated during the radial bending process. By filling the gap between the annular mounting groove 3 and the cleaning strip 1 with an epoxy adhesive layer, the tightness of the installation is further enhanced, ensuring that the umbrella skirt 6 can smoothly follow the vibration when the cleaning strip 1 is bent radially, thereby effectively shaking off the dirt attached to the surface and improving the cleaning effect.

[0061] Furthermore, the epoxy adhesive layer uses a two-component high-temperature resistant epoxy adhesive with a 1:1 mass ratio, ensuring excellent heat resistance and structural stability during curing. The addition of 1-2 wt% nano-silica particles further enhances the thermal conductivity of the epoxy adhesive layer. These particles have a high specific surface area and good thermal conductivity, enabling the construction of efficient heat conduction paths within the epoxy adhesive layer, thereby significantly enhancing overall heat dissipation capacity and further accelerating the heat dissipation speed of cleaning strip 1.

[0062] like Figure 5 As shown, it also includes an anti-aging shell 4 disposed on the outside of the low-voltage power supply unit 212. The bottom of the anti-aging shell 4 is provided with a number of drainage holes 41, and the inner wall of the anti-aging shell 4 is provided with drainage grooves 42 corresponding to the number of drainage holes 41.

[0063] In this embodiment, the anti-aging shell 4 is made of high-quality aluminum alloy with a thickness of 1-1.5mm, possessing good mechanical strength and corrosion resistance. The shell surface is treated with a fluorocarbon spraying process, further enhancing its resistance to ultraviolet rays, weathering, and corrosion. This shell is installed outside the low-voltage power supply unit 212 and reliably fixed by the end fittings 7, effectively blocking external dust, moisture, and physical impacts, thereby providing comprehensive protection for the internal unit and significantly extending its service life.

[0064] Furthermore, the arrangement of the drainage hole 41 and the drainage channel 42 further enhances the protective capability of the anti-aging shell 4, allowing rainwater to be guided into the drainage hole 41 for discharge, preventing water from seeping into the interior. The drainage channel 42 is inclined along the inner wall of the anti-aging shell 4, with an inclination slope of 5°-10°.

[0065] Furthermore, the exposed surface of the cleaning strip 1 is coated with a polytetrafluoroethylene (PTFE) coating with a thickness of 0.1-0.2 mm. The surface roughness of the PTFE coating is Ra≤0.8μm. In addition, an ultraviolet absorber is added to the PTFE coating at a ratio of 0.5-1wt%. The ultraviolet absorber is a benzotriazole compound. Therefore, the PTFE coating can absorb ultraviolet rays with a wavelength of 280-400nm, further slowing down the aging of the cleaning strip 1.

[0066] Furthermore, a 0.05-0.1mm thick silicone resin insulating layer is coated on the surface of the conductive and thermally conductive layer 11. The material of the insulating protective layer is the same as that of the flexible conductive film 211. The insulating layer prevents the conductive and thermally conductive layer 11 from directly contacting the umbrella skirt 6, while improving the compatibility with the polytetrafluoroethylene coating and avoiding interlayer peeling.

[0067] The control assembly includes an excitation unit for controlling the operation of the electrical excitation assembly 21 and the optical excitation assembly 22, and a switching unit for controlling the switching between the electrical excitation assembly 21 and the optical excitation assembly 22.

[0068] The excitation unit includes: a temperature sensor for detecting ambient temperature, a humidity sensor for detecting ambient humidity, and control switches electrically connected to the temperature sensor and the humidity sensor, respectively.

[0069] The switching unit includes: a detection element for detecting the light energy status of the light excitation component 22 and a power switching switch electrically connected to the detection element.

[0070] In this embodiment, the excitation duration and excitation interval are adaptively adjusted by the built-in contamination detection algorithm based on the real-time data detected by the temperature sensor and humidity sensor. The excitation interval is within 1 to 24 hours. When the contamination level reaches level four, the excitation interval is shortened to 1 to 2 hours.

[0071] To further explain, the solar photovoltaic panel 222 collects solar energy and converts it into electrical energy, which is then stored in the battery. When the detection device detects that the battery charge is lower than a set value, the power switching switch is activated, stopping the excitation operation of the light excitation component 22 and activating the electric excitation component 21 to excite the cleaning strip 1. This ensures uninterrupted switching between the light excitation component 22 and the electric excitation component 21, further guaranteeing the uninterrupted operation of the insulator cleaning operation.

[0072] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic cleaning mechanism for the surface of insulators in power transmission terminals, characterized in that, include: A cleaning strip (1) embedded in the umbrella skirt (6) and a dual-mode excitation mechanism disposed outside the cleaning strip (1); The cleaning strip (1) includes: a conductive and thermally conductive layer (11), a gradient hardness layer (12), and a strip body (13) sequentially embedded in the umbrella skirt (6) from the inside to the outside. The dual-mode excitation mechanism includes: an electric excitation component (21), an optical excitation component (22), and a control component for controlling the switching and operation of the electric excitation component (21) and the optical excitation component (22); when the electric excitation component (21) is energized or the optical excitation component (22) is illuminated, the cleaning strip (1) bends radially and the umbrella skirt (6) vibrates to remove surface dirt.

2. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 1, characterized in that, The cleaning strip (1) has a segmented structure, and several segments of the cleaning strip (1) are connected in series by flexible polyimide connecting sheets, the thickness of which is 0.1~0.2mm.

3. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 1, characterized in that, The electrically excited component (21) includes: a flexible conductive film (211) attached to the inner side of the cleaning strip (1), a low-voltage power taking unit (212) fixedly installed at the power taking interface at the end of the insulator, and an overcurrent protection unit for protecting the safety of the component. The low-voltage power taking unit (212) is connected to the flexible conductive film (211) through a wire.

4. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 1, characterized in that, The light excitation component (22) includes: a lamp holder bracket (221) spanning across the underside of several umbrella skirts (6), a solar photovoltaic panel (222) mounted on the lamp holder bracket (221) via a sliding groove, a UV lamp group (223) mounted above the solar photovoltaic panel (222), and a battery mounted on the lamp holder bracket (221) for storing electrical energy. The solar photovoltaic panel (222) slides out of the lamp holder bracket (221) to collect solar energy.

5. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 2, characterized in that, The umbrella skirt (6) is provided with an annular insert groove (3), and the annular insert groove (3) is provided with a plurality of radially distributed locking grooves (31). Each section of the cleaning strip (1) is provided with a protrusion that cooperates with the locking groove (31). The cleaning strip (1) is embedded into the annular insert groove (3) through the cooperation of the locking groove (31) and the protrusion.

6. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 5, characterized in that, The inner wall of the annular insert groove (3) is provided with a sealing strip to prevent the cleaning strip (1) from sliding, and the bottom of the annular insert groove (3) is provided with a flexible buffer pad to buffer the radial bending stress of the cleaning strip (1).

7. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 1, characterized in that, The strip body (13) is made of liquid crystal elastomer material.

8. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 3, characterized in that, It also includes an anti-aging shell (4) disposed on the outside of the low-voltage power supply unit (212), the bottom of the anti-aging shell (4) is provided with a plurality of drainage holes (41), and the inner wall of the anti-aging shell (4) is provided with drainage grooves (42) corresponding to the plurality of drainage holes (41).

9. The automatic cleaning mechanism for the surface of transmission terminal insulators according to claim 1, characterized in that, The control component includes an excitation unit for controlling the operation of the electrical excitation component (21) and the optical excitation component (22) and a switching unit for controlling the switching of the electrical excitation component (21) and the optical excitation component (22); The excitation unit includes: a temperature sensor for detecting ambient temperature, a humidity sensor for detecting ambient humidity, and a control switch electrically connected to the temperature sensor and the humidity sensor respectively. The switching unit includes: a detection element for detecting the light energy status of the light excitation component (22) and a power switching switch electrically connected to the detection element.

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