CN110707646A - 330kV transmission line defroster - Google Patents

330kV transmission line defroster Download PDF

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Publication number
CN110707646A
CN110707646A CN201911134937.7A CN201911134937A CN110707646A CN 110707646 A CN110707646 A CN 110707646A CN 201911134937 A CN201911134937 A CN 201911134937A CN 110707646 A CN110707646 A CN 110707646A
Authority
CN
China
Prior art keywords
ice
component
scraping
crushing
ice crushing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911134937.7A
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Chinese (zh)
Inventor
潘超
张江南
赵云龙
马占云
陈玉军
张国栋
于海威
马超
董双才
申西宁
张成山
张亚楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAINTENANCE COMPANY STATE GRID QINGHAI ELECTRIC POWER Co Ltd
Original Assignee
MAINTENANCE COMPANY STATE GRID QINGHAI ELECTRIC POWER Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAINTENANCE COMPANY STATE GRID QINGHAI ELECTRIC POWER Co Ltd filed Critical MAINTENANCE COMPANY STATE GRID QINGHAI ELECTRIC POWER Co Ltd
Priority to CN201911134937.7A priority Critical patent/CN110707646A/en
Publication of CN110707646A publication Critical patent/CN110707646A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/16Devices for removing snow or ice from lines or cables

Abstract

The invention discloses a 330KV power transmission line deicing device, which relates to the technical field of power transmission lines and comprises a box body, wherein an ice receiving groove is formed in the upper surface of the box body, a guide pipe is arranged on the lower surface of the box body, a left side plate and a right side plate are fixedly installed at the positions, located on the two sides of the ice receiving groove, of the upper surface of the box body respectively, a deicing cavity is formed by the left side plate and the right side plate, and a heating mechanism is arranged inside the deicing cavity. The ice removing device is scientific and reasonable in structure and convenient to operate, can preheat and melt ice on the power transmission line through the arranged heating mechanism, facilitates subsequent ice removing work, can crush ice blocks preheated by the heating mechanism through the arranged ice crushing mechanism, achieves ice removing work of the power transmission line, and can scrape the ice blocks crushed by the ice crushing mechanism through the arranged scraping mechanism.

Description

330kV transmission line defroster
Technical Field
The invention relates to the technical field of power transmission lines, in particular to a deicing device for a 330KV power transmission line.
Background
The transmission line is an important component of an electric power system, not only is important for power transmission, but also the safety and reliability of the operation of the transmission line directly relate to the stable development of national economy, and because the transmission line has multiple distribution points and wide range, particularly in areas with complex terrain and severe natural environment, the transmission line is exposed outdoors for a long time, not only bears the internal pressure of normal mechanical load and power load, but also suffers from external invasion such as dirt, lightning stroke, strong wind, landslide, subsidence and bird damage, and the factors can cause damage such as strand breakage, abrasion, corrosion and the like of a lead and seriously affect the normal operation of the transmission line, in the north of China, the cold weather causes the serious icing of the transmission line, and easily causes the ground short circuit, the disconnection, even the tower collapse accident of the transmission line, and the harmfulness of the transmission line is extremely high.
At present, a thermal deicing method, a mechanical deicing method and a natural deicing method are mainly adopted in the deicing method of the power transmission line, wherein the mechanical deicing method mainly adopts bamboo poles, wooden rods, ice picks and the like to beat or uses an iron chain to move on a lead to rub and deice. Therefore, the technical personnel in the field provide a deicing device for a 330KV transmission line to solve the problems in the background art.
Disclosure of Invention
The invention aims to provide a deicing device for a 330KV power transmission line, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the 330KV power transmission line deicing device is characterized by comprising a box body (1), wherein an ice receiving groove (2) is formed in the upper surface of the box body (1), a guide pipe (3) penetrates through the middle of the box body (1), a left side plate (4) and a right side plate (5) are fixedly mounted at positions, located on two sides of the ice receiving groove (2), of the upper surface of the box body (1) respectively, the left side plate (4) and the right side plate (5) form a deicing cavity (6), a heating mechanism (7) is arranged at the front end of the interior of the deicing cavity (6), ice crushing mechanisms (8) are arranged on the left side plate (4) and the right side plate (5) of the interior of the deicing cavity (6), and a scraping mechanism (9) is arranged at the rear end of the interior of the deicing cavity (6); the heating mechanism (7) comprises a heating component A (10) and a heating component B (11) which are arranged in parallel, the heating component A (10) and the heating component B (11) comprise a telescopic cylinder (14), a piston rod (13) is arranged on the telescopic cylinder (14), a heating plate (12) is fixedly installed at the top end of the piston rod (13), and a heating resistance wire is arranged inside the heating plate (12); the ice crushing mechanism (8) comprises an ice crushing component A (16) and an ice crushing component B (18) which are arranged in parallel, a rotating shaft (22) of a driving motor (24) penetrates through a first large gear (15) to be connected with the ice crushing component A (16), a first small gear (23) is arranged at the lower end of the ice crushing component A (16), a second small gear (19) is arranged at the lower end of the ice crushing component B (18), and the first small gear (23) and the second small gear (19) are connected together through a transmission rod (20); scrape mechanism (9) including scraping subassembly A (25) and scraping subassembly B (26), scrape subassembly A (25) and scrape subassembly B (26) crisscross setting, and scrape one end of subassembly A (25) and scraping subassembly B (26) and be provided with electric telescopic handle (28), the other end is provided with scraper blade (27).
One end of the ice crushing component A (16) is provided with a crushing head (21), the other end of the ice crushing component A is provided with a first large gear (15), a rotating shaft (22) is installed at the joint of the crushing head (21) and the first large gear (15), a crushing hammer (17) is arranged on one side face, away from the first large gear (15), of the ice crushing component A (16), and the crushing hammer (17) is of a conical structure.
Crushing ice subassembly B (18) and crushing ice subassembly A (16) structure are the same, and crushing ice subassembly B (18) and crushing ice subassembly A (16) installation opposite direction, crushing ice subassembly A (16) and driving motor (24) are connected through pivot (22) rotation, first pinion (23) are connected through first gear wheel (15) transmission with crushing ice subassembly A (16), and first pinion (23) are connected through transfer line (20) transmission with second pinion (19).
The scraping component B (26) and the scraping component A (25) have the same structure, and the installation directions of the scraping component B (26) and the scraping component A (25) are opposite.
Compared with the prior art, the invention has the beneficial effects that:
1. the ice block removed by the deicing device can be timely led out through the ice receiving groove, the phenomenon of casualties caused by direct falling on the ground is prevented, the safety of the deicing device in the use process is improved, and the diversion treatment is realized by connecting the diversion pipe through the external pipeline in the use process.
2. According to the invention, through the arranged heating mechanism, the preheating and ice melting treatment can be carried out on the power transmission line, so that the subsequent ice removing work can be conveniently carried out, and in the using process, the heating plates in the heating assembly A and the heating assembly B clamp the power transmission line through the action of the telescopic air cylinders, so that the preheating and ice melting work of the power transmission line is realized.
3. According to the ice crushing device, the ice blocks which are preheated by the heating mechanism can be crushed by the ice crushing mechanism, so that the ice blocks are deiced on the power transmission line, and in the using process, the driving motor is started to work, so that the rotating shaft drives the first large gear and the crushing head to rotate, the first large gear drives the first small gear to rotate, the first small gear drives the second small gear to drive through the transmission rod, the ice crushing component B is driven to rotate through the second small gear, the ice blocks are crushed by the ice crushing component B and the crushing hammer on the side face of the crushing head in the ice crushing component A, and the ice crushing effect is effectively improved.
4. According to the ice scraping device, the ice blocks crushed by the ice crushing mechanism can be scraped through the arranged scraping mechanism, so that the ice removing effect of the ice removing device is effectively improved, in the using process, the electric telescopic rod is started to work, the positions of the scrapers in the scraping assembly A and the scraping assembly B are adjusted, the two scrapers are respectively located at the upper end and the lower end of the power transmission line, the movement of the ice removing device is driven through the movement of an external ice removing trolley or an unmanned aerial vehicle, and then the scraping work of the crushed ice blocks is realized.
Drawings
FIG. 1 is a schematic structural diagram of a deicing device for a 330KV power transmission line;
FIG. 2 is a schematic structural diagram of a heating mechanism in a deicing device for a 330KV power transmission line;
FIG. 3 is a schematic structural diagram of an ice crushing mechanism in a deicing device for a 330KV power transmission line;
fig. 4 is a schematic structural diagram of a scraping mechanism in a deicing device for a 330KV power transmission line;
wherein: 1. a box body; 2. an ice receiving groove; 3. a flow guide pipe; 4. a left side plate; 5. a right side plate; 6. a de-icing chamber; 7. a heating mechanism; 8. an ice crushing mechanism; 9. a scraping mechanism; 10. a heating component A; 11. a heating component B; 12. heating plates; 13. a piston rod; 14. a telescopic cylinder; 15. a first bull gear; 16. an ice crushing component A; 17. a breaking hammer; 18. an ice crushing component B; 19. a second pinion gear; 20. a transmission rod; 21. a crushing head; 22. a rotating shaft; 23. a first pinion gear; 24. a drive motor; 25. a scraping component A; 26. a scraping assembly B; 27. a squeegee; 28. an electric telescopic rod.
Detailed Description
The embodiment 1 is characterized by comprising a box body (1), wherein an ice receiving groove (2) is formed in the upper surface of the box body (1), a guide pipe (3) penetrates through the middle of the box body (1), a left side plate (4) and a right side plate (5) are fixedly installed at positions, located on two sides of the ice receiving groove (2), of the upper surface of the box body (1), a deicing cavity (6) is formed by the left side plate (4) and the right side plate (5), a heating mechanism (7) is arranged at the front end of the interior of the deicing cavity (6), an ice crushing mechanism (8) is arranged on the left side plate (4) and the right side plate (5) of the interior of the deicing cavity (6), and a scraping mechanism (9) is arranged at the rear end of the interior of the deicing cavity (6); the heating mechanism (7) comprises a heating component A (10) and a heating component B (11) which are arranged in parallel, the heating component A (10) and the heating component B (11) comprise a telescopic cylinder (14), a piston rod (13) is arranged on the telescopic cylinder (14), a heating plate (12) is fixedly installed at the top end of the piston rod (13), and a heating resistance wire is arranged inside the heating plate (12); the ice crushing mechanism (8) comprises an ice crushing component A (16) and an ice crushing component B (18) which are arranged in parallel, a rotating shaft (22) of a driving motor (24) penetrates through a first large gear (15) to be connected with the ice crushing component A (16), a first small gear (23) is arranged at the lower end of the ice crushing component A (16), a second small gear (19) is arranged at the lower end of the ice crushing component B (18), and the first small gear (23) and the second small gear (19) are connected together through a transmission rod (20); scrape mechanism (9) including scraping subassembly A (25) and scraping subassembly B (26), scrape subassembly A (25) and scrape subassembly B (26) crisscross setting, and scrape one end of subassembly A (25) and scraping subassembly B (26) and be provided with electric telescopic handle (28), the other end is provided with scraper blade (27).
One end of the ice crushing component A (16) is provided with a crushing head (21), the other end of the ice crushing component A is provided with a first large gear (15), a rotating shaft (22) is installed at the joint of the crushing head (21) and the first large gear (15), a crushing hammer (17) is arranged on one side face, away from the first large gear (15), of the ice crushing component A (16), and the crushing hammer (17) is of a conical structure.
Crushing ice subassembly B (18) and crushing ice subassembly A (16) structure are the same, and crushing ice subassembly B (18) and crushing ice subassembly A (16) installation opposite direction, crushing ice subassembly A (16) and driving motor (24) are connected through pivot (22) rotation, first pinion (23) are connected through first gear wheel (15) transmission with crushing ice subassembly A (16), and first pinion (23) are connected through transfer line (20) transmission with second pinion (19).
The scraping component B (26) and the scraping component A (25) have the same structure, and the installation directions of the scraping component B (26) and the scraping component A (25) are opposite.
Embodiment 2, please refer to fig. 1 to 4, in an embodiment of the present invention, a 330KV transmission line deicing device includes a box body (1), an ice receiving groove (2) is formed in an upper surface of the box body (1), and a diversion pipe (3) is arranged on a lower surface of the box body (1), ice cubes removed by the deicing device can be timely guided out through the ice receiving groove (2), so as to prevent the ice cubes from directly falling on the ground to cause casualties, improve safety of the deicing device during use, and realize diversion treatment by connecting the diversion pipe (3) through an external pipeline during use.
The upper surface of the box body (1) is respectively and fixedly provided with a left side plate (4) and a right side plate (5) at the positions of two sides of the ice receiving groove (2), the left side plate (4) and the right side plate (5) form an ice removing cavity (6), a heating mechanism (7) is arranged in the ice removing cavity (6), the heating mechanism (7) comprises a heating component A (10) and a heating component B (11) which are arranged in parallel, the heating component A (10) comprises a telescopic cylinder (14), one side of the telescopic cylinder (14) is provided with a piston rod (13), one end of the piston rod (13) is fixedly provided with a heating plate (12), the heating component B (11) and the heating component A (10) have the same structure, the mounting directions of the heating component B (11) and the heating component A (10) are opposite, the telescopic cylinder (14) and the heating plate (12) are fixedly connected through the piston rod (13), and a heating resistance wire is, the preheating and ice melting treatment can be carried out on the power transmission line through the arranged heating mechanism (7), so that the follow-up ice removing work of the power transmission line can be conveniently carried out, and in the using process, the telescopic air cylinder (14) acts to enable the heating plates (12) in the heating component A (10) and the heating component B (11) to clamp the power transmission line, so that the preheating and ice melting work of the power transmission line is realized.
An ice crushing mechanism (8) is arranged at one side of the heating mechanism (7) in the deicing cavity (6), the ice crushing mechanism (8) comprises an ice crushing component A (16) and an ice crushing component B (18) which are arranged in parallel, a driving motor (24) is installed at one side of the ice crushing component A (16), a first pinion (23) is arranged at the lower end of the ice crushing component A (16), a second pinion (19) is arranged at the lower end of the ice crushing component B (18), a transmission rod (20) is installed at the joint of the first pinion (23) and the second pinion (19), a crushing head (21) is arranged at one end of the ice crushing component A (16), a first gearwheel (15) is arranged at the other end of the ice crushing component A, a rotating shaft (22) is installed at the joint of the crushing head (21) and the first gearwheel (15), and a crushing hammer (17) is arranged on one side surface, far away from the first gearwheel (15), of the ice, the breaking hammer (17) is of a conical structure, the ice crushing component B (18) and the ice crushing component A (16) are identical in structure, the installation directions of the ice crushing component B (18) and the ice crushing component A (16) are opposite, the ice crushing component A (16) and the driving motor (24) are rotationally connected through a rotating shaft (22), a first pinion (23) and the ice crushing component A (16) are in transmission connection through a first gearwheel (15), the first pinion (23) and a second pinion (19) are in transmission connection through a transmission rod (20), ice blocks preheated by a heating mechanism (7) can be broken through an arranged ice crushing mechanism (8), the deicing work of a power transmission line is realized, in the using process, the driving motor (24) is started to work, the rotating shaft (22) drives the first gearwheel (15) and a breaking head (21) to rotate, and then the first gearwheel (15) drives the first pinion (23) to rotate, make first pinion (23) pass through transfer line (20) and drive second pinion (19) transmission, and then drive trash ice subassembly B (18) through second pinion (19) and rotate to through trash ice subassembly B (18) and trash ice subassembly A (16) in breaking hammer (17) of crushing head (21) side, carry out crushing treatment to the ice-cube, effectively improve the trash ice effect.
The ice scraping mechanism (9) is installed at one side position of the ice crushing mechanism (8), the scraping mechanism (9) comprises a scraping component A (25) and a scraping component B (26), the scraping component A (25) and the scraping component B (26) are arranged in a staggered mode, an electric telescopic rod (28) is arranged at one end of the scraping component A (25), a scraper (27) is arranged at the other end of the scraping component A (25), the scraping component B (26) and the scraping component A (25) are identical in structure, the installation direction of the scraping component B (26) and the installation direction of the scraping component A (25) are opposite, ice blocks crushed by the ice crushing mechanism (8) can be scraped through the arranged scraping mechanism (9), the deicing effect of the deicing device is effectively improved, in the using process, the electric telescopic rod (28) is started to work, the position adjustment of the scraper (27) in the scraping component A (25) and the scraping component B (26) is carried out, so that the two scrapers (27, the ice removing device is driven to move through the external ice removing trolley or the unmanned aerial vehicle, and then the scraping work of broken ice blocks is achieved.
The working principle of the invention is as follows: firstly, fixing a deicing device on a deicing trolley or an unmanned aerial vehicle, adjusting the position of the deicing device, enabling a power transmission line to be positioned in a deicing cavity (6), then enabling a heating component A (10) and a heating plate (12) in a heating component B (11) to clamp the power transmission line through the action of a telescopic cylinder (14), thereby realizing the preheating and deicing work of the power transmission line, carrying out the preheating and deicing treatment on the power transmission line through an arranged heating mechanism (7), facilitating the subsequent deicing work, further starting a driving motor (24) to work, enabling a rotating shaft (22) to drive a first large gear (15) and a crushing head (21) to rotate, further enabling the first large gear (15) to drive a first small gear (23) to rotate, enabling the first small gear (23) to drive a second small gear (19) to rotate, and further enabling the second small gear (19) to drive a crushing ice component B (18) to rotate, thereby, ice cubes are crushed by the crushing hammer (17) on the side of the crushing head (21) in the ice crushing component B (18) and the ice crushing component A (16), the ice crushing effect is effectively improved, ice cubes which are preheated by the heating mechanism (7) can be crushed by the arranged ice crushing mechanism (8), the deicing work of the power transmission line is realized, furthermore, the electric telescopic rod (28) is started to work, the positions of the scraping component A (25) and the scraping component B (26) are adjusted, so that the two scraping plates (27) are respectively positioned at the upper end and the lower end of the power transmission line, the ice removing device is driven to move by the movement of an external deicing trolley or an unmanned aerial vehicle, the scraping work of the crushed ice cubes can be further realized, the crushed ice cubes of the ice crushing mechanism (8) can be scraped by the arranged scraping mechanism (9), and the deicing effect of the ice removing device is effectively improved, still further, the bottom of honeycomb duct (3) inserts the water conservancy diversion pipeline among the deicing process, realizes deicing ice-cube's water conservancy diversion and handles, and this design collects heating, breakage, strikes off function in an organic whole, and deicing effect preferred.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (3)

1. The 330KV power transmission line deicing device is characterized by comprising a box body (1), wherein an ice receiving groove (2) is formed in the upper surface of the box body (1), a guide pipe (3) penetrates through the middle of the box body (1), a left side plate (4) and a right side plate (5) are fixedly mounted at positions, located on two sides of the ice receiving groove (2), of the upper surface of the box body (1) respectively, the left side plate (4) and the right side plate (5) form a deicing cavity (6), a heating mechanism (7) is arranged at the front end of the interior of the deicing cavity (6), ice crushing mechanisms (8) are arranged on the left side plate (4) and the right side plate (5) of the interior of the deicing cavity (6), and a scraping mechanism (9) is arranged at the rear end of the interior of the deicing cavity (6); the heating mechanism (7) comprises a heating component A (10) and a heating component B (11) which are arranged in parallel, the heating component A (10) and the heating component B (11) comprise a telescopic cylinder (14), a piston rod (13) is arranged on the telescopic cylinder (14), a heating plate (12) is fixedly installed at the top end of the piston rod (13), and a heating resistance wire is arranged inside the heating plate (12); the ice crushing mechanism (8) comprises an ice crushing component A (16) and an ice crushing component B (18) which are arranged in parallel, a rotating shaft (22) of a driving motor (24) penetrates through a first large gear (15) to be connected with the ice crushing component A (16), a first small gear (23) is arranged at the lower end of the ice crushing component A (16), a second small gear (19) is arranged at the lower end of the ice crushing component B (18), and the first small gear (23) and the second small gear (19) are connected together through a transmission rod (20); the scraping mechanism (9) comprises a scraping component A (25) and a scraping component B (26), the scraping component A (25) and the scraping component B (26) are arranged in a staggered mode, one end of the scraping component A (25) and one end of the scraping component B (26) are provided with an electric telescopic rod (28), and the other end of the scraping component A (25) and the other end of the scraping component B (26) are provided with a scraper (27); one end of the ice crushing component A (16) is provided with a crushing head (21), the other end of the ice crushing component A is provided with a first large gear (15), a rotating shaft (22) is installed at the joint of the crushing head (21) and the first large gear (15), a crushing hammer (17) is arranged on one side face, away from the first large gear (15), of the ice crushing component A (16), and the crushing hammer (17) is of a conical structure.
2. The deicing device for the 330KV power transmission line according to claim 1, wherein the ice crushing assembly B (18) and the ice crushing assembly A (16) are identical in structure, the installation directions of the ice crushing assembly B (18) and the ice crushing assembly A (16) are opposite, the ice crushing assembly A (16) is rotatably connected with the driving motor (24) through the rotating shaft (22), the first small gear (23) is in transmission connection with the ice crushing assembly A (16) through the first large gear (15), and the first small gear (23) is in transmission connection with the second small gear (19) through the transmission rod (20).
3. A 330KV transmission line de-icing device according to claim 1, characterized in that the scraping assembly B (26) and the scraping assembly a (25) have the same structure, and the installation directions of the scraping assembly B (26) and the scraping assembly a (25) are opposite.
CN201911134937.7A 2019-11-19 2019-11-19 330kV transmission line defroster Pending CN110707646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911134937.7A CN110707646A (en) 2019-11-19 2019-11-19 330kV transmission line defroster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911134937.7A CN110707646A (en) 2019-11-19 2019-11-19 330kV transmission line defroster

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Publication Number Publication Date
CN110707646A true CN110707646A (en) 2020-01-17

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CN201911134937.7A Pending CN110707646A (en) 2019-11-19 2019-11-19 330kV transmission line defroster

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112510631A (en) * 2020-12-25 2021-03-16 杨毕女 High-voltage cable deicing equipment for electric power detection
CN113363920A (en) * 2021-07-09 2021-09-07 郑州工业应用技术学院 Electric power automatic control deicing robot system
CN113601149A (en) * 2021-07-30 2021-11-05 山东丰源汽车科技有限公司 Rotary type plate spring metal bushing auxiliary press-in device
CN114061758A (en) * 2021-11-25 2022-02-18 浙江盛暄电力科技有限公司 A infrared radiation thermometer for electric power tour

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112510631A (en) * 2020-12-25 2021-03-16 杨毕女 High-voltage cable deicing equipment for electric power detection
CN113363920A (en) * 2021-07-09 2021-09-07 郑州工业应用技术学院 Electric power automatic control deicing robot system
CN113363920B (en) * 2021-07-09 2022-06-03 郑州工业应用技术学院 Electric power automatic control deicing robot system
CN113601149A (en) * 2021-07-30 2021-11-05 山东丰源汽车科技有限公司 Rotary type plate spring metal bushing auxiliary press-in device
CN114061758A (en) * 2021-11-25 2022-02-18 浙江盛暄电力科技有限公司 A infrared radiation thermometer for electric power tour
CN114061758B (en) * 2021-11-25 2023-10-27 浙江盛暄电力科技有限公司 Infrared thermometer for electric power inspection

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