CN111342412A - Automatic wiring device for ground wire ice melting - Google Patents
Automatic wiring device for ground wire ice melting Download PDFInfo
- Publication number
- CN111342412A CN111342412A CN202010151320.2A CN202010151320A CN111342412A CN 111342412 A CN111342412 A CN 111342412A CN 202010151320 A CN202010151320 A CN 202010151320A CN 111342412 A CN111342412 A CN 111342412A
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- CN
- China
- Prior art keywords
- assembly
- transmission
- ground wire
- rack
- motor
- 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.)
- Granted
Links
- 238000002844 melting Methods 0.000 title claims abstract description 48
- 230000008018 melting Effects 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 239000012212 insulator Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses an automatic wiring device for ground wire ice melting, which comprises a transmission assembly and a confluence assembly which are installed in combination with a cross arm of an iron tower, and a conductive assembly which is installed in combination with the transmission assembly, wherein the conductive assembly is driven by the transmission assembly to rotate and stretch, when the automatic wiring device for ground wire ice melting is in standby, the conductive assembly shrinks and is parallel to the cross arm of the iron tower, and when the automatic wiring device for ground wire ice melting works, the conductive assembly rotates and stretches to be in butt joint with the confluence assembly for ice melting. The ground wire ice-melting automatic wiring device is small in size, light in weight, strong in applicability and good in ice-melting effect.
Description
Technical Field
The invention relates to the technical field of ice melting devices of overhead transmission lines, in particular to an automatic wiring device for ground wire ice melting.
Background
Overhead transmission lines under extreme climatic conditions, in particular overhead transmission lines in some alpine mountain areas of China, are often severely iced in winter. There is less ice coating on the wire and more ice coating on the ground wire. Longitudinal unbalanced tension generated by uneven ice coating on the conducting wire and the ground wire can cause the iron tower to incline or bend towards the side with large tension, when the design bearing capacity is exceeded, the conditions of breakage of the conducting wire and the ground wire, dropping of hardware fittings and the like can occur, and the iron tower can collapse in severe cases. In addition, since overhead ground wires do not resist partial freezing unlike conductors that can withstand the heat generated by the load current, the thickness of the ice coating is typically much greater than that of power transmission conductors. In order to improve the ice disaster prevention capability of a power grid, the development of the ground wire ice melting device has important practical significance.
At the present stage, two ground wire ice melting wiring devices exist, one is handheld, an ice melting operating rod is manually lifted to a tower, and is connected with a lead converging device to complete ice melting through flow; the other type is an automatic wiring device for ground wire ice melting, wherein a conducting rod is rotated downwards from a cross arm through a motor and is connected with a wire converging device to complete ice melting through-flow. According to the two ice melting wiring devices, the handheld ice melting wiring device needs to be manually lifted to the tower, the danger coefficient is high, and meanwhile, the butt joint difficulty is high due to factors such as the structure of the tower body; although the automatic ground wire ice melting wiring device can realize automatic wiring, the tower body of the pole tower needs to be modified in the mode, the construction difficulty is high, the original aluminum alloy short circuit disconnecting link is large in size and heavy in weight, the air gap distance of partial insulators is shortened, and the ice melting effect is not ideal enough. In summary, there is a need in the art for improved automatic ground wire de-icing wiring devices.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide an automatic ground wire ice-melting connection device, which includes a transmission assembly and a confluence assembly mounted in combination with a cross arm of an iron tower, and a conductive assembly mounted in combination with the transmission assembly, wherein the conductive assembly is driven by the transmission assembly to rotate and stretch, when the automatic ground wire ice-melting connection device is in standby, the conductive assembly shrinks and is parallel to the cross arm of the iron tower, and when the automatic ground wire ice-melting connection device works, the conductive assembly rotates and stretches to be in butt joint with the confluence assembly to melt ice.
In order to achieve the aim, the invention provides an automatic ground wire ice-melting wiring device which is installed in combination with a cross arm of an iron tower, wherein the automatic ground wire ice-melting wiring device comprises a transmission assembly, a conductive assembly and a confluence assembly, the transmission assembly is installed in combination with the cross arm of the iron tower, the conductive assembly is installed in combination with the transmission assembly, and the confluence assembly is installed in combination with the cross arm of the iron tower; one end of the conductive component is rotatably connected with the transmission component, the conductive component is telescopic, and the transmission component controls and drives the conductive component to be telescopic; the confluence assembly comprises a jumper string and a confluence wire clamp, wherein one end of the jumper string is connected with the cross arm of the iron tower, and the other end of the jumper string is connected with the confluence wire clamp; the conductive assembly is driven by the transmission assembly to rotate and stretch, and is butted with the confluence wire clamp.
Preferably, the conductive assembly comprises a sleeve, a telescopic rod, a contact and a rack, wherein one end of the telescopic rod is connected with the sleeve, and the other end of the telescopic rod is connected with the contact; the rack penetrates through the sleeve and extends into the telescopic rod, the rack drives the telescopic rod to contract when extending out of the sleeve, and the rack drives the telescopic rod to extend when extending into the sleeve; the sleeve is rotatably connected with the transmission assembly and driven by the transmission assembly to rotate; the rack is connected with the transmission assembly, and the transmission assembly drives the rack to extend out of or into the sleeve, so as to drive the telescopic rod to stretch out and draw back.
Preferably, the transmission assembly comprises a connecting plate, a first motor, a rotating rod, a second motor, a transmission rod and a rotating wheel assembly, the connecting plate is installed in combination with the cross arm of the iron tower, the first motor and the second motor are vertically installed at the bottom of the connecting plate, and the first motor is parallel to the second motor; the first motor is connected with the rotating rod through a gear structure, and the rotating rod is fixedly connected with the top end of the sleeve; the second motor is connected with the transmission rod through a worm gear structure, the transmission rod is meshed with the rotating wheel assembly, and the rack is meshed with the rotating wheel assembly.
Preferably, the bottom end of the first motor is connected with a first rotary composite insulator, and the bottom end of the first rotary composite insulator is connected with a bevel gear; the dwang with connecting plate parallel arrangement, dwang one end with sleeve top fixed connection, the other end have the awl tooth head, just the awl tooth head with bevel gear meshes.
Preferably, the bottom end of the second motor is connected with a second rotary composite insulator, and the bottom end of the second rotary composite insulator is connected with a worm; two ends of the transmission rod are respectively provided with a transmission gear and a worm wheel, the transmission gear is meshed with the rotating wheel assembly, and the worm wheel is meshed with the worm.
Preferably, the rotating wheel assembly comprises a first rotating wheel and a second rotating wheel which are connected in parallel, the transmission gear is meshed with the first rotating wheel, and the rack is meshed with the second rotating wheel.
Preferably, the contacts are hook-shaped.
Preferably, the contact is located at the bottom end of the junction clamp.
Preferably, the rack is a flexible rack.
Compared with the prior art, the automatic wiring device for ground wire ice melting disclosed by the invention has the advantages that: small volume, light weight, strong applicability and good ice melting effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic ground wire ice melting wiring device in a standby state according to the present invention.
Fig. 2 is a schematic structural diagram of the automatic ground wire ice melting wiring device in a working state.
Fig. 3 is a schematic structural diagram of a transmission assembly of an automatic ground ice melting wiring device according to the present invention.
Fig. 4 is a schematic partial structural diagram of a conductive component of an automatic ground ice melting wiring device according to the present invention.
Detailed Description
As shown in fig. 1 and 2, the automatic ground wire ice-melting wiring device of the present invention is installed in combination with a cross arm 10 of an iron tower, and includes a transmission assembly 20, a conductive assembly 30, and a junction assembly 40. The transmission component 20 is installed in combination with the iron tower cross arm 10, the conductive component 30 is installed in combination with the transmission component 20, and the confluence component 40 is installed in combination with the iron tower cross arm 10. Specifically, one end of the conductive assembly 30 is rotatably connected to the transmission assembly 20, and the conductive assembly 30 is retractable, and the transmission assembly 20 controls and drives the conductive assembly 30 to extend or contract. The confluence assembly 40 comprises a jumper string 41 and a confluence clamp 42, wherein one end of the jumper string 41 is connected with the iron tower cross arm 10, and the other end of the jumper string is connected with the confluence clamp 42. As shown in fig. 2, the conductive component 30 can be driven by the transmission component 20 to rotate and extend, and is butted with the confluence clamp 42, so that the access of the ice melting current of the automatic ground wire ice melting wiring device is realized, and ice melting is performed. After the ice melting is completed, the conductive component 30 can also be driven by the transmission component 20 to rotate and contract until the conductive component is close to the iron tower cross arm 10, and then the conductive component is locked, as shown in the state of fig. 1.
Referring to fig. 4, the conductive assembly 30 includes a sleeve 31, a telescopic rod 32, a contact 33, and a rack 34, wherein one end of the telescopic rod 32 is connected to the sleeve 31, the other end of the telescopic rod 32 is connected to the contact 33, the rack 34 penetrates through the sleeve 31 and extends into the telescopic rod 32, the rack 34 extends out of the sleeve 31 and drives the telescopic rod 32 to contract, and the rack 34 extends into the sleeve 31 and drives the telescopic rod 32 to extend. The sleeve 31 is rotatably connected with the transmission component 20, and the sleeve 31 is driven by the transmission component 20 to rotate, so as to drive the telescopic rod 32 to rotate, and approach or leave the iron tower cross arm 10. The rack 34 is connected with the transmission assembly 20, and the transmission assembly 20 drives the rack 34 to extend out of or into the sleeve 31, so as to drive the telescopic rod 32 to extend and retract. The contact 33 is in a hook shape, and the butt joint point of the contact 33 and the confluence wire clamp 42 is located at the bottom end of the confluence wire clamp 42, so that the contact 33 and the confluence wire clamp 42 can be accurately butted, the butted part can be protected, and the invasion of rain and snow can be avoided. Through setting up telescopic link 32 can effectively adapt to the wire of different positions, and can conveniently accomodate, strong adaptability. The rack 34 is a flexible rack and can be rolled and folded, so that the volume of the device is greatly reduced. Furthermore, a conductive metal layer is arranged between the racks 34, so that the overcurrent capacity can be increased, and the ice melting efficiency and the ice melting effect can be improved.
As shown in fig. 3, the transmission assembly 20 includes a connection plate 21, a first motor 22, a rotation rod 23, a second motor 24, a transmission rod 25 and a rotation wheel assembly 26, the connection plate 21 is installed in combination with the iron tower cross arm 10, both the first motor 22 and the second motor 24 are vertically installed at the bottom of the connection plate 21, and the first motor 22 and the second motor 24 are arranged in parallel.
The bottom end of the first motor 22 is connected with a first rotary composite insulator 221, and the bottom end of the first rotary composite insulator 221 is connected with a bevel gear 222. The rotating rod 23 is parallel to the connecting plate 21, one end of the rotating rod 23 is fixedly connected to the top end of the sleeve 31, the other end of the rotating rod 23 is provided with a bevel gear head 231, and the bevel gear head 231 is meshed with the bevel gear 222. When the first motor 22 rotates, the rotating rod 23 is driven to rotate through a gear structure, so that the sleeve 31 is driven to rotate, and the conductive assembly 30 is rotated. The rotating wheel assembly 26 is rotatably arranged at the bottom of the connecting plate 21, and the rack 34 outside the sleeve 31 is meshed with the rotating wheel assembly 26.
The bottom end of the second motor 24 is connected to a second rotary composite insulator 241, and the bottom end of the second rotary composite insulator 241 is connected to a worm 242. The driving rod 25 has a driving gear 251 and a worm wheel 252 at both ends, the driving gear 251 is engaged with the rotating wheel assembly 26, and the worm wheel 252 is engaged with the worm 242. When the second motor 24 rotates, the driving rod 25 is driven to rotate through the worm and gear structure, so as to drive the rotating wheel assembly 26 to rotate, and the rotating wheel assembly 26 drives the rack 34 to extend into or out of the sleeve 31, so as to change the length of the telescopic rod 32.
The wheel assembly 26 includes a first wheel 261 and a second wheel 262 connected in parallel, the first wheel 261 rotates synchronously with the second wheel 262, the transmission gear 251 is engaged with the first wheel 261, and the rack 34 is engaged with the second wheel 262. When the first rotating wheel 261 is driven by the transmission gear 251 to rotate, the second rotating wheel 262 rolls up or pushes out the rack 34, and the telescopic rod 32 is driven to contract or extend.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An automatic wiring device for ground wire ice melting is installed in combination with a cross arm of an iron tower, and is characterized in that the automatic wiring device for ground wire ice melting comprises a transmission assembly, a conductive assembly and a confluence assembly, wherein the transmission assembly is installed in combination with the cross arm of the iron tower, the conductive assembly is installed in combination with the transmission assembly, and the confluence assembly is installed in combination with the cross arm of the iron tower; one end of the conductive component is rotatably connected with the transmission component, the conductive component is telescopic, and the transmission component controls and drives the conductive component to be telescopic; the confluence assembly comprises a jumper string and a confluence wire clamp, wherein one end of the jumper string is connected with the cross arm of the iron tower, and the other end of the jumper string is connected with the confluence wire clamp; the conductive assembly is driven by the transmission assembly to rotate and stretch, and is butted with the confluence wire clamp.
2. The automatic ground wire ice-melting wiring device according to claim 1, wherein the conductive assembly comprises a sleeve, a telescopic rod, a contact and a rack, one end of the telescopic rod is connected with the sleeve, and the other end of the telescopic rod is connected with the contact; the rack penetrates through the sleeve and extends into the telescopic rod, the rack drives the telescopic rod to contract when extending out of the sleeve, and the rack drives the telescopic rod to extend when extending into the sleeve; the sleeve is rotatably connected with the transmission assembly and driven by the transmission assembly to rotate; the rack is connected with the transmission assembly, and the transmission assembly drives the rack to extend out of or into the sleeve, so as to drive the telescopic rod to stretch out and draw back.
3. The automatic ground wire ice-melting wiring device as claimed in claim 2, wherein the transmission assembly comprises a connecting plate, a first motor, a rotating rod, a second motor, a driving rod and a rotating wheel assembly, the connecting plate is installed in combination with the cross arm of the iron tower, the first motor and the second motor are vertically installed at the bottom of the connecting plate, and the first motor and the second motor are parallel; the first motor is connected with the rotating rod through a gear structure, and the rotating rod is fixedly connected with the top end of the sleeve; the second motor is connected with the transmission rod through a worm gear structure, the transmission rod is meshed with the rotating wheel assembly, and the rack is meshed with the rotating wheel assembly.
4. The automatic ground wire ice-melting wiring device according to claim 3, wherein the bottom end of the first motor is connected with a first rotary composite insulator, and the bottom end of the first rotary composite insulator is connected with a bevel gear; the dwang with connecting plate parallel arrangement, dwang one end with sleeve top fixed connection, the other end have the awl tooth head, just the awl tooth head with bevel gear meshes.
5. The automatic ground wire ice-melting wiring device according to claim 3, wherein the bottom end of the second motor is connected with a second rotary composite insulator, and the bottom end of the second rotary composite insulator is connected with a worm; two ends of the transmission rod are respectively provided with a transmission gear and a worm wheel, the transmission gear is meshed with the rotating wheel assembly, and the worm wheel is meshed with the worm.
6. The automatic ground wire ice melting wiring device according to claim 5, wherein said wheel assembly comprises a first wheel and a second wheel connected in parallel, said drive gear being engaged with said first wheel and said rack being engaged with said second wheel.
7. The automatic ground ice melting connection of claim 2, wherein the contacts are hook-shaped.
8. The automatic ground wire ice melting connection of claim 2, wherein the point of interface of the contact with the junction clamp is at the bottom end of the junction clamp.
9. The automatic ground wire ice melting connection of claim 2, wherein the rack is a flexible rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151320.2A CN111342412B (en) | 2020-03-06 | 2020-03-06 | Automatic wiring device for ground wire ice melting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151320.2A CN111342412B (en) | 2020-03-06 | 2020-03-06 | Automatic wiring device for ground wire ice melting |
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| Publication Number | Publication Date |
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| CN111342412A true CN111342412A (en) | 2020-06-26 |
| CN111342412B CN111342412B (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010151320.2A Active CN111342412B (en) | 2020-03-06 | 2020-03-06 | Automatic wiring device for ground wire ice melting |
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| Country | Link |
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| CN (1) | CN111342412B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103889A (en) * | 2020-09-17 | 2020-12-18 | 中国能源建设集团南京线路器材有限公司 | Insulation protection equipment for automatic wiring device for ground wire ice melting |
| CN114039322A (en) * | 2021-11-26 | 2022-02-11 | 广东电网有限责任公司 | Automatic wiring device for ice melting of overhead ground wire |
| CN116564581A (en) * | 2023-07-10 | 2023-08-08 | 江东金具设备有限公司 | Conductive component of ground wire ice melting device and ground wire ice melting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916732A (en) * | 1974-12-11 | 1975-11-04 | Russell E Caldwell | Ice removing tool |
| CN203658403U (en) * | 2013-12-30 | 2014-06-18 | 国家电网公司 | Length-adjustable electric leakage test insulation rod |
| CN203895925U (en) * | 2014-06-16 | 2014-10-22 | 中国南方电网有限责任公司超高压输电公司 | Automatic wiring apparatus for ground wire deicing |
| CN107121596A (en) * | 2017-04-24 | 2017-09-01 | 李世明 | A kind of handcart type breaker loop resistance test device and its application method |
| CN208209425U (en) * | 2017-11-13 | 2018-12-07 | 国网湖南省电力公司 | Universal link ice-melt shorting stub installation tool |
| CN209267115U (en) * | 2019-03-04 | 2019-08-16 | 贵州电网有限责任公司 | A kind of DC ice melting short circuit control device |
-
2020
- 2020-03-06 CN CN202010151320.2A patent/CN111342412B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916732A (en) * | 1974-12-11 | 1975-11-04 | Russell E Caldwell | Ice removing tool |
| CN203658403U (en) * | 2013-12-30 | 2014-06-18 | 国家电网公司 | Length-adjustable electric leakage test insulation rod |
| CN203895925U (en) * | 2014-06-16 | 2014-10-22 | 中国南方电网有限责任公司超高压输电公司 | Automatic wiring apparatus for ground wire deicing |
| CN107121596A (en) * | 2017-04-24 | 2017-09-01 | 李世明 | A kind of handcart type breaker loop resistance test device and its application method |
| CN208209425U (en) * | 2017-11-13 | 2018-12-07 | 国网湖南省电力公司 | Universal link ice-melt shorting stub installation tool |
| CN209267115U (en) * | 2019-03-04 | 2019-08-16 | 贵州电网有限责任公司 | A kind of DC ice melting short circuit control device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103889A (en) * | 2020-09-17 | 2020-12-18 | 中国能源建设集团南京线路器材有限公司 | Insulation protection equipment for automatic wiring device for ground wire ice melting |
| CN112103889B (en) * | 2020-09-17 | 2022-02-25 | 中国能源建设集团南京线路器材有限公司 | Insulation protection equipment for automatic wiring device for ground wire ice melting |
| CN114039322A (en) * | 2021-11-26 | 2022-02-11 | 广东电网有限责任公司 | Automatic wiring device for ice melting of overhead ground wire |
| CN116564581A (en) * | 2023-07-10 | 2023-08-08 | 江东金具设备有限公司 | Conductive component of ground wire ice melting device and ground wire ice melting device |
| CN116564581B (en) * | 2023-07-10 | 2023-11-03 | 江东金具设备有限公司 | Conductive component of ground wire ice melting device and ground wire ice melting device |
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| Publication number | Publication date |
|---|---|
| CN111342412B (en) | 2021-04-13 |
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Effective date of registration: 20200929 Address after: 137 West Road, guanshanhu District, Guiyang City, Guizhou Province 550000 Applicant after: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. Address before: The Lake District in Guizhou province 550081 Guanshan road Guiyang City, No. 137 Applicant before: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. Applicant before: JIANGDONG FITTINGS EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20220610 Address after: 543002 No.78, middle section of Xihuan Road, Wanxiu District, Wuzhou City, Guangxi Zhuang Autonomous Region Patentee after: WUZHOU BUREAU, CSG EHV POWER TRANSIMISSION Co. Patentee after: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. Address before: No. 137, West Road, guanshanhu District, Guiyang City, Guizhou Province Patentee before: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. |
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Effective date of registration: 20231208 Address after: 550081 No. 137 Guanshan Road, Guanshan Lake District, Guiyang City, Guizhou Province Patentee after: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. Address before: 543002 No.78, middle section of Xihuan Road, Wanxiu District, Wuzhou City, Guangxi Zhuang Autonomous Region Patentee before: WUZHOU BUREAU, CSG EHV POWER TRANSIMISSION Co. Patentee before: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. |
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