Electric pole maintenance device

Abstract

The invention relates to the technical field of electric power maintenance, in particular to an electric pole maintenance device. According to the technical scheme, the electric pole maintenance device comprises an annular machine box, the annular machine box is composed of two symmetrical semicircular rings, a plurality of lifting rolling wheels are arranged on the inner ring face of the annular machine box, and a first annular sliding way and a second annular sliding way are arranged on the outer ring face of the annular machine box; three first moving tables are arranged in the first annular sliding way in a sliding mode, and a grinding assembly, a spraying assembly and a drying assembly are installed on the three first moving tables correspondingly. The device further comprises a bird droppings cleaning assembly, the bird droppings cleaning assembly comprises two second moving tables and two connecting frames, the two second moving tables are installed in the second annular sliding way in a sliding mode, and the number of the connecting frames is two. According to the electric pole cleaning device, hardened bird droppings are comprehensively and thoroughly cleaned, and the cleaning and maintaining effect on the outer side of an electric pole is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power maintenance, and in particular to a pole maintenance device. Background Art

[0002] Currently, most power lines transmit electricity by overhead power lines using poles. During daily use, the surface of metal poles will rust and oxidize due to the influence of external factors. Therefore, the surface of such poles needs to be maintained frequently.

[0003] During the maintenance process, the rust on the rusted parts will be polished off and then re-sprayed with anti-rust paint for protection; manual climbing is required to deal with the rust, which is very dangerous and inconvenient to operate; secondly, bird droppings will remain on the surface of the pole, which is difficult to remove after drying and solidifying, affecting the maintenance operation of the pole, and some bird droppings will still remain on the surface after scraping.

[0004] Patent publication number CN108086774A discloses a multifunctional pole maintenance device, which primarily comprises a small circular retaining ring, a large circular bottom ring, and an operating device. It also includes a plug-in locking mechanism, a leveling mechanism, a terminal locking device, an articulated locking device, a feed mechanism, a lifting drive, and a swinging drive. It can be quickly assembled, calibrated, and leveled on-site, offering simple adjustments. It can automatically paint and code poles and apply slogans, quickly measure pole verticality or inclination, quickly connect three-phase power lines to poles, and collect test data. Disassembly is simple and convenient, taking up minimal space after disassembly, making it easy to carry and save time and effort. One person can complete the entire operation.

[0005] The patent with publication number CN116213173A discloses a cleaning and painting device for electric pole maintenance, including a frame, which is symmetrically placed with each other, and is provided with a bidirectional screw, a guide shaft, a lower T-shaped square shaft and an axle seat. The bidirectional screw is connected to the right side of the frame by a thread, and the guide shaft is nested in the left side of the frame. The lower T-shaped square shaft is symmetrically nested on both sides of the middle section of the frame. The inner end of the lower T-shaped square shaft is fixed with a U-shaped frame by a screw, and the inner end of the U-shaped frame is connected with a pulley through an interference bearing, and a lower spring is mounted on the lower T-shaped square shaft between the U-shaped frame and the inner wall of the frame, and the axle seat is symmetrically welded on both sides of the outer end of the frame; the above two patents realize automatic painting of electric poles, but they cannot realize the continuous operation of rust removal and painting, and cannot effectively remove bird droppings on the surface of the electric pole. Summary of the Invention

[0006] The present invention proposes a pole maintenance device, which solves the problem in the prior art that manual climbing is required to deal with rust, which is highly dangerous and inconvenient to operate; secondly, bird droppings will remain on the surface of the pole, which is difficult to remove after drying and solidifying, affecting the maintenance operation of the pole.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A pole maintenance device includes an annular machine box, the annular machine box consisting of two symmetrical semicircular rings, a plurality of lifting rollers provided on the inner annular surface of the annular machine box, a first annular slideway and a second annular slideway provided on the outer annular surface of the annular machine box, three first movable platforms slidingly provided in the first annular slideway, and a grinding assembly, a spraying assembly, and a drying assembly respectively installed on the three first movable platforms;

[0009] It also includes a bird droppings cleaning assembly, which includes a second mobile platform and a connecting frame. There are two second mobile platforms, which are slidably installed in the second annular slideway. There are two connecting frames, which are respectively fixed to the two second mobile platforms. An annular cabin is installed in the middle of the connecting frame, which surrounds the outside of the pole, and a cleaning friction ring is provided on the inside of the annular cabin.

[0010] Furthermore, a conical ring is fixed to the top of the annular cabin. The conical ring is a conical ring that is larger at the top and smaller at the bottom. The radius of the lower end of the conical ring is the same as the radius of the annular cabin. The cleaning friction ring is fixed to the conical ring through a fixing rod. The inner diameter of the cleaning friction ring is the same as the inner diameter of the pole.

[0011] Furthermore, an ultrasonic vibration module is provided on the cleaning friction ring.

[0012] Furthermore, the inner diameter of the annular cabin is larger than the outer diameter of the pole, and a bottom ring is sealed and fixed to the bottom of the annular cabin. The inner diameter of the bottom ring is the same as the outer diameter of the pole, and a circular space is formed between the bottom ring, the annular cabin and the pole.

[0013] Furthermore, a liquid suction ring is connected to the bottom of the bottom ring, and the inner diameter of the liquid suction ring is the same as the outer diameter of the pole;

[0014] It also includes a cleaning scraper ring and a lower collecting box, wherein the upper side of the cleaning scraper ring is fixed to the outer side of the annular cabin through a vertical rod, and the inner diameter of the cleaning scraper ring is the same as the outer diameter of the pole;

[0015] The lower collecting box is installed at the bottom of the connecting frame. The lower collecting box is located below the outer side of the cleaning scraper ring. A plurality of connecting pipes are connected to the bottom of the lower collecting box.

[0016] Furthermore, the grinding assembly includes a first mounting plate and an electric grinding disc, the first mounting plate is mounted on the first first movable platform, and the electric grinding disc is mounted on the first mounting plate;

[0017] Furthermore, the spraying assembly includes a liquid storage tank and a nozzle, the liquid storage tank is installed on the second first movable platform, and the nozzle is installed on the liquid storage tank;

[0018] The nozzle is mounted on the liquid storage tank in a liftable manner, and the nozzle is connected to the interior of the liquid storage tank through a pipeline.

[0019] Furthermore, the drying component is a drying fan, and the drying fan is installed on the third of the first movable platforms.

[0020] Furthermore, it also includes an annular collection box, which is installed on the top of the annular machine box. The annular collection box consists of two symmetrical semicircular rings. The inner diameter of the annular collection box is the same as the outer diameter of the pole. The annular collection box is located below the electric grinding disc.

[0021] Furthermore, the ultrasonic vibration module includes:

[0022] A liquid main control unit is configured to execute a submerged multimodal ultrasonic control strategy, the strategy comprising:

[0023] Liquid high-frequency cavitation mode: Dynamically sweep the frequency within the 40kHz±2kHz frequency band to generate cavitation bubbles with a diameter of 30-80μm, and the sound intensity density can be dynamically adjusted within the range of 18-25W / cm 2 ;

[0024] Liquid low-frequency shear mode: output 0.8-1.2kHz mechanical vibration wave, superimposed shear stress field with amplitude ±1.0mm;

[0025] Liquid-resistant sensor array, including:

[0026] The acoustic impedance sensor, with a Hastelloy C276 housing, monitors the acoustic impedance value Z′ in the liquid medium in real time and dynamically corrects it based on the liquid density ρ and the sound velocity c:

[0027] where Z air is the reference acoustic impedance in air, ρ air is the air density, c air is the speed of sound in air;

[0028] Laser thickness sensor with waterproof optical window;

[0029] The liquid adaptive regulation module is configured as follows:

[0030] When Z′<2.0MRayl and dirt thickness δ<3mm, the activation fluid uses high-frequency cavitation mode;

[0031] When Z′≥4.0MRayl or δ≥3mm, switch to the liquid low-frequency shear mode;

[0032] Dynamic compensation frequency according to liquid temperature T′:

[0033] f corrected =f0×[1-β(T′-25)], where β=45ppm / ℃, f corrected is the corrected ultrasonic frequency, f0 is the initial set frequency, and β is the temperature compensation coefficient;

[0034] Liquid safety module, including:

[0035] The cavitation monitoring unit triggers frequency reduction protection by detecting the 2f / 3f harmonic energy ratio > 30%, where 2f / 3f is the energy ratio of the second and third harmonics;

[0036] Magnetic fluid rotary seal structure, pressure resistance ≥1.5MPa, leakage rate <1×10-6Pa·m 3 / s;

[0037] Degassing agent is injected into the unit to maintain the dissolved oxygen content <5ppm.

[0038] The positive effects of the present invention are:

[0039] The bird droppings on the surface of the pole are cleaned. After cleaning, the remaining bird droppings on the surface are soaked. While soaking, ultrasonic vibration is used for cleaning. During the next movement, friction vibration is used to further clean the bird droppings, achieving the effect of thorough cleaning.

[0040] It ensures that the bird droppings on the poles can be completely cleaned and scraped off, avoiding further corrosion of the pole surface by the remaining bird droppings, and greatly improving the effect of pole maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the first structure of the electric pole maintenance device of the present invention;

[0042] Figure 2 This is a schematic diagram of the first structure of the polishing component, spraying component, and drying component in the present invention;

[0043] Figure 3 This is a second structural diagram of the polishing component, spraying component, and drying component in the present invention;

[0044] Figure 4 This is a second structural diagram of the electric pole maintenance device of the present invention;

[0045] Figure 5 This is a third structural diagram of the electric pole maintenance device of the present invention;

[0046] Figure 6 This is a schematic diagram of the structure of the bird droppings cleaning component of the present invention;

[0047] Figure 7 A cross-sectional view of the bird droppings cleaning component of the present invention;

[0048] In the figure: 1. annular machine box; 2. first annular slide; 3. first moving platform; 4. first mounting plate; 5. electric grinding disc; 6. liquid storage tank; 7. nozzle; 8. annular collecting box; 9. lifting roller; 10. drying fan; 11. second annular slide; 12. second moving platform; 13. connecting frame; 14. annular cabin; 15. frustum ring; 16. cleaning friction ring; 17. bottom ring; 18. liquid suction ring; 19. cleaning scraper ring; 20. lower collecting box; 21. connecting pipe. DETAILED DESCRIPTION

[0049] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 any creative efforts are within the scope of protection of the present invention.

[0050] Example 1

[0051] Combine Figure 1-7 As shown, a pole maintenance device includes a ring-shaped machine box 1, which is composed of two symmetrical semicircular rings. During maintenance, the two symmetrical semicircular rings need to be wrapped around the outside of the pole and assembled and fixed with bolts;

[0052] The annular collecting box 8 is also composed of two symmetrical semicircular rings and can be disassembled and fixed.

[0053] The annular cabin 14, the frustum ring 15, the cleaning friction ring 16, the bottom ring 17, the liquid suction ring 18, the cleaning scraper ring 19 and the lower collecting box 20 are also assembled from two symmetrical parts, so that the device can be installed on the outside of the pole when in use.

[0054] A plurality of lifting rollers 9 are provided on the inner ring surface of the annular machine box 1. When the annular machine box 1 is mounted around the outside of the pole, the lifting rollers 9 are attached to the outer surface of the pole and can drive the device to move up and down.

[0055] A first annular slideway 2 and a second annular slideway 11 are provided on the outer annular surface of the annular machine box 1. Three first movable platforms 3 are slidably provided in the first annular slideway 2. A grinding component, a spraying component and a drying component are respectively installed on the three first movable platforms 3.

[0056] It also includes a bird droppings cleaning component, which includes a second mobile platform 12 and a connecting frame 13. There are two second mobile platforms 12, which are slidably installed in the second annular slide 11. There are two connecting frames 13, which are respectively fixed to the two second mobile platforms 12. An annular cabin 14 is installed in the middle of the connecting frame 13. The annular cabin 14 surrounds the outside of the pole, and a cleaning friction ring 16 is provided on the inside of the annular cabin 14.

[0057] A conical ring 15 is fixed to the top of the annular cabin 14. The conical ring 15 is a conical ring with a larger top and a smaller bottom. The radius of the lower end of the conical ring 15 is the same as the radius of the annular cabin 14. The cleaning friction ring 16 is fixed to the conical ring 15 through a fixing rod. The inner diameter of the cleaning friction ring 16 is the same as the inner diameter of the pole.

[0058] The cleaning friction ring 16 is provided with an ultrasonic vibration module. During the friction cleaning process, ultrasonic vibration cleaning is combined to achieve the effect of fully cleaning the bird droppings.

[0059] The inner diameter of the annular cabin 14 is larger than the outer diameter of the pole. A bottom ring 17 is sealed and fixed to the bottom of the annular cabin 14. The inner diameter of the bottom ring 17 is the same as the outer diameter of the pole. A circular space is formed between the bottom ring 17, the annular cabin 14 and the pole.

[0060] The bottom of the bottom ring 17 is connected to a liquid suction ring 18, and the inner diameter of the liquid suction ring 18 is the same as the outer diameter of the pole;

[0061] It also includes a cleaning scraper ring 19 and a lower collecting box 20. The upper side of the cleaning scraper ring 19 is fixed to the outer side of the annular cabin 14 through a vertical rod. The inner diameter of the cleaning scraper ring 19 is the same as the outer diameter of the pole.

[0062] The lower collecting box 20 is installed at the bottom of the connecting frame 13 . The lower collecting box 20 is located below the outer side of the cleaning scraper ring 19 . A plurality of connecting pipes 21 are connected to the bottom of the lower collecting box 20 .

[0063] The lower end of the connecting pipe 21 can be connected to an external vacuum cleaner fan so that a downward airflow can be formed in the collection box 20;

[0064] In this embodiment, the device is installed on the outside of the pole. The annular machine box 1 moves upward on the outside of the pole via the lifting roller 9 to the position on the outside of the pole for maintenance. During the movement, the cleaning scraper 19 moves in contact with the outer surface of the pole to scrape off the rusty and raised paint, dust and large pieces of bird droppings on the surface. After being scraped off, these scraped debris falls downward, forming an oblique downward airflow in the collection box 20, and then these debris will fall downward to be collected in the collection box 20, thereby avoiding debris from being scattered from the air during the cleaning process and causing environmental pollution.

[0065] After the cleaning scraper 19 has scraped the debris, the device slowly moves downwards. During the downward movement, the cleaning scraper 19 scrapes the debris downwards. After scraping, due to the long-term attachment of bird droppings, some bird droppings will still remain on the surface of the pole after the cleaning scraper 19 has scraped the debris.

[0066] The following scheme is further used: before the device moves to scrape, a sufficient amount of bird droppings cleaning liquid is added to the inner side of the annular chamber 14, and then the cleaning liquid will be retained in the space enclosed by the annular chamber 14 and the bottom ring 17. As a result, the cleaning liquid in the space soaks the surface bird droppings remaining on the surface of the pole. After the cleaning scraper ring 19 scrapes, it moves downward, and the annular chamber 14 moves to the position where the surface bird droppings remain, pauses the downward movement, and the cleaning liquid soaks the position. During the soaking process, the cleaning liquid fully reacts with the bird droppings remaining on the surface of the pole, so that the remaining bird droppings are dissolved. In this cycle, the cleaning scraper ring 19 scrapes downward for a distance, pauses, and the annular chamber 14 soaks the scraping position, thereby achieving sufficient soaking and dissolution of the bird droppings.

[0067] During the soaking reaction between the cleaning liquid and the bird droppings, in order to further speed up and fully clean the bird droppings, the cleaning friction ring 16 will surround the outer surface of the pole. In the static state, the cleaning friction ring 16 performs ultrasonic cleaning on the bird droppings, and cooperates with the cleaning liquid to achieve efficient cleaning of the bird droppings. When the soaking is completed and the cleaning friction ring 16 moves downward, it will move downward in contact with the surface of the pole. During the movement, it further forms a friction cleaning motion on the surface of the pole, further avoiding the residue of bird droppings.

[0068] The upper side of the cleaning friction ring 16 can be connected to a liquid suction ring. When the pole surface is soaked and cleaned, the liquid suction ring moves downward to absorb and clean the cleaning liquid remaining on the surface, thereby preventing the cleaning liquid from remaining on the pole surface and affecting the subsequent anti-rust paint spraying.

[0069] During the downward movement of the annular cabin 14, there is a gap between the bottom ring 17 at the bottom of the annular cabin 14 and the surface of the pole. In order to prevent the cleaning liquid from flowing out during operation, the liquid suction ring 18 will be sealed at the bottom of the bottom ring 17. At the same time, there is a sealing strip on the top of the liquid suction ring 18. The sealing strip will seal the gap between the bottom of the bottom ring 17 and the surface of the pole. In addition, during the downward movement, there will be some uneven positions on the surface of the pole, which may cause some cleaning liquid to flow out. The liquid suction ring 18 will move downward synchronously to absorb the cleaning liquid, thereby preventing the cleaning liquid from flowing out from the bottom side.

[0070] The conical structure of the truncated cone ring 15 allows sufficient cleaning liquid to be stored in the annular chamber 14, so that the cleaning friction ring 16 can be immersed in the cleaning liquid, achieving a better bird droppings cleaning effect;

[0071] Through the above scheme, the bird droppings on the surface of the pole are cleaned. After cleaning, the remaining bird droppings on the surface are soaked. While soaking, ultrasonic vibration is used for cleaning. During the next movement, friction vibration is used to further clean the bird droppings, achieving the effect of thorough cleaning.

[0072] Example 2

[0073] After the cleaning friction ring 16 is used to clean the bird droppings, the device moves downward, and then the grinding assembly, the spraying assembly and the drying assembly move to the cleaning completion position.

[0074] Combine Figure 1-7 As shown, the difference between this embodiment and embodiment 1 is that the grinding assembly includes a first mounting plate 4 and an electric grinding disc 5, the first mounting plate 4 is mounted on the first first movable platform 3, and the electric grinding disc 5 is mounted on the first mounting plate 4;

[0075] The spraying assembly includes a liquid storage tank 6 and a nozzle 7. The liquid storage tank 6 is mounted on the second first movable platform 3, and the nozzle 7 is mounted on the liquid storage tank 6.

[0076] The nozzle 7 is installed on the liquid storage tank 6 in a liftable manner, and the nozzle 7 is connected to the interior of the liquid storage tank 6 through a pipeline.

[0077] The drying component is a drying fan 10 , which is installed on the third first movable platform 3 .

[0078] It also includes an annular collecting box 8, which is installed on the top of the annular machine box 1. The annular collecting box 8 consists of two symmetrical semicircular rings. The inner diameter of the annular collecting box 8 is the same as the outer diameter of the pole. The annular collecting box 8 is located below the electric grinding disc 5.

[0079] Then the electric grinding disc 5 comes into contact with the outer surface of the pole and starts to rotate and grind. During the grinding process, the first movable platform 3 moves in the first annular slide 2 of the annular machine box 1, thereby driving the electric grinding disc 5 to grind around the outer surface of the pole, thereby grinding the rust on the outer surface of the pole.

[0080] The annular collection box 8 is composed of two symmetrical semicircular rings. The inner diameter of the annular collection box 8 is the same as the outer diameter of the pole. During the grinding process of the electric grinding disc 4, the rusty powder ground off will fall into the annular collection box 8, preventing the ground powder from falling from a high altitude.

[0081] The spraying assembly includes a second movable platform 5, a liquid storage tank 6 and a nozzle 7. The second movable platform 5 is slidably arranged on the annular embedded track of the annular machine box 1, the liquid storage tank 6 is installed on the second movable platform 5, and the nozzle 7 is installed on the liquid storage tank 6.

[0082] For the polished position, the nozzle 7 can be directly used to touch up the paint at that position, thereby achieving the continuous automatic operation of polishing and touch up.

[0083] The nozzle 7 is installed on the liquid storage tank 6 in a liftable manner, and the nozzle 7 is connected to the interior of the liquid storage tank 6 through a pipeline.

[0084] The height of the nozzle 7 can be partially adjusted. For some positions on the pole, the nozzle 7 can be raised and lowered for fine adjustment.

[0085] Example 3

[0086] The difference between this embodiment and embodiment 2 is that the ultrasonic vibration module includes:

[0087] A liquid main control unit is configured to execute a submerged multimodal ultrasonic control strategy, the strategy comprising:

[0088] Liquid high-frequency cavitation mode: Dynamically sweep the frequency within the 40kHz±2kHz frequency band to generate cavitation bubbles with a diameter of 30-80μm, and the sound intensity density can be dynamically adjusted within the range of 18-25W / cm 2 ;

[0089] Liquid low-frequency shear mode: output 0.8-1.2kHz mechanical vibration wave, superimposed shear stress field with amplitude ±1.0mm;

[0090] Liquid-resistant sensor array, including:

[0091] The acoustic impedance sensor, with a Hastelloy C276 housing, monitors the acoustic impedance value Z′ in the liquid medium in real time and dynamically corrects it based on the liquid density ρ and the sound velocity c:

[0092] where Z air is the reference acoustic impedance in air, ρ air is the air density, c air is the speed of sound in air;

[0093] Laser thickness sensor with waterproof optical window;

[0094] The liquid adaptive regulation module is configured as follows:

[0095] When Z′<2.0MRayl and dirt thickness δ<3mm, the activation fluid uses high-frequency cavitation mode;

[0096] When Z′≥4.0MRayl or δ≥3mm, switch to the liquid low-frequency shear mode;

[0097] Dynamic compensation frequency according to liquid temperature T′:

[0098] f corrected=f0×[1-β(T′-25)], where β=45ppm / ℃, f corrected is the corrected ultrasonic frequency, f0 is the initial set frequency, and β is the temperature compensation coefficient;

[0099] Liquid safety module, including:

[0100] The cavitation monitoring unit triggers frequency reduction protection by detecting the 2f / 3f harmonic energy ratio > 30%, where 2f / 3f is the energy ratio of the second and third harmonics;

[0101] Magnetic fluid rotary seal structure, pressure resistance ≥1.5MPa, leakage rate <1×10-6Pa·m 3 / s;

[0102] Degassing agent is injected into the unit to maintain the dissolved oxygen content <5ppm.

[0103] In this embodiment, the ultrasonic vibration module achieves efficient and stable cleaning of the pole surface through a collaborative mechanism of multimodal ultrasonic coupling, dynamic parameter feedback, and active safety protection. Its core working principle is as follows:

[0104] Underwater multimodal ultrasonic coupling:

[0105] High-frequency cavitation mode (40kHz±2kHz): Excites dense cavitation bubbles (30-80μm) in the liquid, and uses the microjets (speed>100m / s) and shock waves (pressure>10MPa) generated by the collapse of cavitation bubbles to remove dirt.

[0106] Low-frequency shear mode (0.8-1.2kHz): A shear stress field (>15kPa) is generated in the liquid through mechanical vibration waves (amplitude ±1.0mm), breaking the crystal structure of hardened deposits.

[0107] Dynamic feedback regulation:

[0108] Acoustic impedance-thickness joint criterion:

[0109] When the acoustic impedance value Z' in the liquid is less than 2.0 MRayl and the dirt thickness δ is less than 3 mm, it is determined to be a soft pollutant (such as grease), and the high-frequency cavitation mode is activated.

[0110] When Z'≥4.0MRayl or δ≥3mm, it is judged as hard deposits (such as calcium scale) and switches to the low-frequency shear mode.

[0111] Temperature compensation mechanism: Real-time monitoring of liquid temperature T', correction of ultrasonic frequency according to the formula, and compensation of temperature drift effect of piezoelectric ceramics.

[0112] Security protection mechanism:

[0113] Cavitation monitoring: By detecting that the 2f / 3f harmonic energy ratio is greater than 30%, it is determined that the cavitation bubble collapse is overloaded and the frequency reduction protection is triggered.

[0114] Sealing and degassing: Magnetic fluid rotary seals prevent liquid infiltration, and degassing agent injection reduces dissolved oxygen content and inhibits cavitation damage.

[0115] Among them, the liquid main control unit

[0116] Hardware architecture:

[0117] Core controller: STM32H743VIT6 microcontroller (main frequency 480MHz, support for floating-point operations), running the FreeRTOS real-time system.

[0118] Ultrasonic drive circuit:

[0119] High-frequency channel: The AD9834 DDS module generates a 38-42kHz sine wave, which drives the piezoelectric ceramic through the TPA3255 power amplifier (output power 0-300W).

[0120] Low-frequency channel: The DRV2605L tactile driver outputs a 0.8-1.2kHz PWM wave to drive a linear electromagnetic vibrator (stroke ±1.0mm).

[0121] Dynamic frequency sweep algorithm:

[0122] C language

[0123] / / Sweep step rate: 1kHz / ms

[0124] for(freq=38000; freq<=42000; freq+=10){AD9834_SetFrequency(freq);

[0125] vTaskDelay(1 / portTICK_PERIOD_MS);}

[0126] Cavitation bubble control:

[0127] Sound intensity density adjustment: The power amplifier current is controlled by PID closed loop to maintain the sound intensity density at 18-25W / cm 2 .

[0128] Cavitation bubble size optimization: (P=18-25W / cm 2 ,ρ=1000-1200kg / m 3 ) Ensure that the cavitation bubble diameter is 30-80μm (optimal cleaning size in liquid).

[0129] Liquid corrosion resistant sensor array

[0130] Acoustic impedance sensor

[0131] Shell material: Hastelloy C276 (UNS N10276), chemical composition: Ni≥57%, Mo≥15%, Cr≥15%, Fe≤7%.

[0132] Acoustic impedance correction algorithm: (Zair=0.0004MRayl)

[0133] Signal processing: ADS1278 24-bit ADC sampling, digital filtering (cut-off frequency 50kHz).

[0134] Laser thickness sensor:

[0135] Optical window: Sapphire (Al2O3 single crystal), 8 mm in diameter, 1.2 mm thick, with MgF2 antireflection coating (550 nm thick, refractive index 1.38).

[0136] The thickness measurement principle is the laser distance measurement principle of the existing technology.

[0137] Liquid adaptive regulation module

[0138] Control logic flow:

[0139] Python language

[0140] def adaptive_control(Z_prime,delta,T_prime):

[0141] if Z_prime<2.0and delta<3:

[0142] set_mode("high_freq")#40kHz sweep frequency, sound intensity density 18-25W / cm 2

[0143] elif Z_prime>=4.0or delta>=3:

[0144] set_mode("low_freq")#1kHz vibration, amplitude ±1.0mm

[0145] Temperature Compensation

[0146] f_corrected=40000*(1-45e-6*(T_prime-25))

[0147] adjust_frequency(f_corrected)

[0148] Temperature compensation circuit:

[0149] The PT1000 platinum resistance temperature sensor (accuracy ±0.1°C) is used to collect temperature signals via the ADS1248 ADC.

[0150] Compensation coefficient β = 45ppm / °C, ensuring frequency stability: Δf / f0 = |45×10 -6 ×(T′-25)∣≤0.5%(-40℃≤T′≤80℃)

[0151] Liquid safety module

[0152] Cavitation monitoring unit:

[0153] Harmonic detection circuit: AD8336 variable gain amplifier + AD7606 16-bit ADC, detects the second (80kHz) and third (120kHz) harmonic components of 40kHz ultrasonic wave.

[0154] Protection trigger threshold: \frac{E_{2f}+E_{3f}}{E_{\text{total}}}>30\%\quad(\text{Frequency reduction 10%, lasting 5 seconds})

[0155] Magnetic fluid rotary seal:

[0156] Magnetic fluid formula: perfluoropolyether (PFPE) base liquid + Fe3O4@SiO2 core-shell magnetic particles (particle size 10nm, mass fraction 8%).

[0157] Sealing structure: three-level stepped magnetic pole (magnetic field strength 0.8T→1.2T→1.5T), sealing gap ≤0.05mm, leakage rate <1×10 -6 Pa·m 3 / s.

[0158] Degassing agent injection unit:

[0159] Degassing agent ingredients: sodium sulfite (60%), sodium dodecyl sulfonate (15%), silane coupling agent KH-550 (25%).

[0160] Injection strategy:

[0161] In the initial stage, pulse injection (1 mL / time, 2 Hz) was used to quickly reduce the dissolved oxygen to below 5 ppm.

[0162] Steady-state constant-rate injection (0.2 mL / min) was used to maintain the dissolved oxygen concentration < 3 ppm.

[0163] Example

[0164] Application scenario: Substation pole surface cleaning

[0165] Working parameters:

[0166] Cleaning solution: 5% citric acid solution (pH = 2.5), temperature 50 ° C, flow rate 1.2 m / s

[0167] Initial dirt: sea salt scale (Z'=4.5MRayl, δ=5mm)

[0168] Operation process:

[0169] The sensor detects Z'≥4.0MRayl and δ≥3mm, activating the low-frequency shear mode (1kHz, ±1.0mm).

[0170] After 30 minutes, the dirt thickness dropped to 2 mm and the high-frequency cavitation mode (40 kHz, 22 W / cm 2 ).

[0171] Real-time monitoring of the 2f / 3f harmonic energy ratio (stable at 18%) without triggering frequency reduction protection.

[0172] result:

[0173] Cleaning time is reduced to 45 minutes (traditional solution takes 120 minutes)

[0174] The surface roughness Ra was reduced from 12.5μm to 0.8μm.

[0175] The liquid ultrasonic vibration module of the present invention realizes efficient and non-destructive cleaning in complex liquid environments through multi-modal ultrasonic coupling and intelligent feedback control.

[0176] The following effects are achieved: cross-medium frequency matching (40kHz liquid optimized frequency band); acoustic-optical joint feedback mechanism (Z'-δ dual parameter decision); cavitation-sealing-degassing coordinated protection (three-in-one safety system).

[0177] The above-mentioned embodiments are described in a relatively detailed and specific manner, expressing preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, they are not limited to the present invention alone, and the patent scope of the present invention cannot be limited solely by these embodiments. That is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in this field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present invention.

Claims

1. A pole maintenance device, characterized in that: The invention comprises an annular machine box (1), wherein the annular machine box (1) is composed of two symmetrical semicircular rings, a plurality of lifting rollers (9) are arranged on the inner annular surface of the annular machine box (1), a first annular slideway (2) and a second annular slideway (11) are arranged on the outer annular surface of the annular machine box (1), three first moving platforms (3) are slidingly arranged in the first annular slideway (2), and a grinding component, a spraying component and a drying component are respectively installed on the three first moving platforms (3); The utility model also includes a bird droppings cleaning component, wherein the bird droppings cleaning component includes a second movable platform (12) and a connecting frame (13), wherein two second movable platforms (12) are provided, and the two second movable platforms (12) are slidably installed in the second annular slideway (11), and two connecting frames (13) are provided, and the two connecting frames (13) are respectively fixed to the two second movable platforms (12), and an annular cabin (14) is installed in the middle of the connecting frame (13), and the annular cabin (14) surrounds the outer side of the electric pole, and a cleaning friction ring (16) is provided on the inner side of the annular cabin (14).

2. The pole maintenance device according to claim 1, characterized in that: A truncated cone ring (15) is fixedly connected to the top of the annular cabin (14). The truncated cone ring (15) is a truncated cone-shaped ring that is larger at the top and smaller at the bottom. The radius of the lower end of the truncated cone ring (15) is the same as the radius of the annular cabin (14). The cleaning friction ring (16) is fixedly connected to the truncated cone ring (15) through a fixing rod. The inner diameter of the cleaning friction ring (16) is the same as the inner diameter of the electric pole.

3. The pole maintenance device according to claim 2, characterized in that: The cleaning friction ring (16) is provided with an ultrasonic vibration module.

4. The pole maintenance device according to claim 3, characterized in that: The inner diameter of the annular cabin (14) is larger than the outer diameter of the electric pole; a bottom ring (17) is sealed and fixedly connected to the bottom of the annular cabin (14); the inner diameter of the bottom ring (17) is the same as the outer diameter of the electric pole; and a circular space is formed between the bottom ring (17), the annular cabin (14) and the electric pole.

5. The pole maintenance device according to claim 4, characterized in that: The bottom of the bottom ring (17) is connected to a liquid suction ring (18), and the inner diameter of the liquid suction ring (18) is the same as the outer diameter of the pole; It also includes a cleaning scraper ring (19) and a lower collecting box (20), wherein the upper side of the cleaning scraper ring (19) is fixed to the outer side of the annular cabin (14) through a vertical rod, and the inner diameter of the cleaning scraper ring (19) is the same as the outer diameter of the pole; The lower collecting box (20) is installed at the bottom of the connecting frame (13), and the lower collecting box (20) is located below the outer side of the cleaning scraper ring (19). The bottom of the lower collecting box (20) is connected to a plurality of connecting pipes (21).

6. The pole maintenance device according to claim 1, characterized in that: The grinding assembly comprises a first mounting plate (4) and an electric grinding disc (5), wherein the first mounting plate (4) is mounted on the first first movable platform (3), and the electric grinding disc (5) is mounted on the first mounting plate (4).

7. The pole maintenance device according to claim 6, characterized in that: The spraying assembly comprises a liquid storage tank (6) and a nozzle (7), wherein the liquid storage tank (6) is mounted on the second of the first movable platforms (3), and the nozzle (7) is mounted on the liquid storage tank (6); The nozzle (7) is installed on the liquid storage tank (6) in a liftable manner, and the nozzle (7) is connected to the interior of the liquid storage tank (6) through a pipeline.

8. The pole maintenance device according to claim 7, characterized in that: The drying component is a drying fan (10), and the drying fan (10) is installed on the third of the first movable platforms (3).

9. The pole maintenance device according to claim 8, characterized in that: The invention also includes an annular collecting box (8), which is installed on the top of the annular machine box (1), and the annular collecting box (8) is composed of two symmetrical semicircular rings. The inner diameter of the annular collecting box (8) is the same as the outer diameter of the electric pole. The annular collecting box (8) is located below the electric grinding disc (5).

10. The pole maintenance device according to claim 3, characterized in that: The ultrasonic vibration module includes: A liquid main control unit is configured to execute a submerged multimodal ultrasonic control strategy, the strategy comprising: Liquid high-frequency cavitation mode: Dynamically sweep the frequency within the 40kHz±2kHz frequency band to generate cavitation bubbles with a diameter of 30-80μm, and the sound intensity density can be dynamically adjusted within the range of 18-25W / cm 2 ; Liquid low-frequency shear mode: output 0.8-1.2kHz mechanical vibration wave, superimposed shear stress field with amplitude ±1.0mm; Liquid-resistant sensor array, including: The acoustic impedance sensor, with a Hastelloy C276 housing, monitors the acoustic impedance value Z′ in the liquid medium in real time and dynamically corrects it based on the liquid density ρ and the sound velocity c: where Z air is the reference acoustic impedance in air, ρ air is the air density, c air is the speed of sound in air; Laser thickness sensor with waterproof optical window; The liquid adaptive regulation module is configured as follows: When Z′<2.0MRayl and dirt thickness δ<3mm, the activation fluid uses high-frequency cavitation mode; When Z′≥4.0MRayl or δ≥3mm, switch to the liquid low-frequency shear mode; Dynamic compensation frequency according to liquid temperature T′: f corrected =f0×[1-β(T′-25)], where β=45ppm / ℃, f corrected is the corrected ultrasonic frequency, f0 is the initial set frequency, and β is the temperature compensation coefficient; Liquid safety module, including: The cavitation monitoring unit triggers frequency reduction protection by detecting the 2f / 3f harmonic energy ratio greater than 30%, where 2f / 3f is the energy ratio of the second and third harmonics; Magnetic fluid rotary seal structure, pressure resistance ≥1.5MPa, leakage rate <1×10 -6 Pa·m 3 / s; Degassing agent is injected into the unit to maintain the dissolved oxygen content <5ppm.

Images