CN107425474A - For changing the device of strain insulator - Google Patents
For changing the device of strain insulator Download PDFInfo
- Publication number
- CN107425474A CN107425474A CN201710722545.7A CN201710722545A CN107425474A CN 107425474 A CN107425474 A CN 107425474A CN 201710722545 A CN201710722545 A CN 201710722545A CN 107425474 A CN107425474 A CN 107425474A
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- CN
- China
- Prior art keywords
- arm
- strain insulator
- card
- cross
- conductor wire
- 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.)
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The invention discloses a kind of device for being used to change strain insulator, including for changing the wing type clamp apparatus of strain insulator string and closed type fixture for changing single chip tension insulator, the wing type clamp apparatus includes the cross-arm-end card of strain insulator string cross-arm-end towing plate installation connection and the conductor wire end card of the parallel hanging plate of the strain insulator string conductor wire end with being replaced installation connection with being replaced, cross-arm-end card and conductor wire end card are bi-wing configuration, and are connected respectively by telescoping mechanism between cross-arm-end card and the corresponding wing of conductor wire end card.The present invention, which integrates, changes first strain insulator string, single chip tension insulator, first strain insulator of cross-arm-end and conductor wire end strain insulator as kit, and not only operation job safety, alleviates the working strength of operator, and is easy to instrument transport to preserve.
Description
Technical field
The invention belongs to power transmission lines overhauling technical field, more particularly to a kind of device for being used to change strain insulator.
Background technology
Change the common work that strain insulator string and single chip tension insulator are line maintenance operations, for a long time with
To change first strain insulator string, single chip tension insulator, first strain insulator of cross-arm-end and conductor wire end strain insulator
The instrument of insulator is all that separated instrument is all separated.
The shortcomings that this mode, one is the instrument for changing strain insulator string and single chip tension insulator is very numerous and diverse, is given
Instrument transport, storage and operation bring many numerous and diverse work.Make operator's replacing strain insulator string and monolithic strain insulator exhausted
Edge working strength increases.The second is change single chip tension insulator, first strain insulator of cross-arm-end and conductor wire end the
Without second protection mechanism during a piece of strain insulator, carry out hidden danger to upkeep operation safety belt.Third, changing strain insulator string makes
Bottle-holding rack, length is long, heavy and can not fold, and very big inconvenience is brought to upkeep operation.
The content of the invention
The present invention provides a kind of device for being used to change strain insulator, and it is exhausted that collection changes strain insulator string, monolithic strain insulator
First edge, first strain insulator of cross-arm-end and conductor wire end strain insulator are kit, and not only operation operation is pacified
Entirely, the working strength of operator is alleviated, and is easy to instrument transport to preserve.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：For changing the device of strain insulator, bag
Include the wing type clamp apparatus for changing strain insulator string and the closed type fixture for changing single chip tension insulator, the wing
Type fixture includes with the cross-arm-end card of strain insulator string cross-arm-end towing plate installation connection that is replaced and with being replaced
The conductor wire end card of the parallel hanging plate installation connection of strain insulator string conductor wire end, cross-arm-end card and conductor wire end card are bi-wing configuration,
And connected respectively by telescoping mechanism between cross-arm-end card and the corresponding wing of conductor wire end card；
The closed type fixture includes card and two or so the closed fixture silks being set up in parallel after card before closed fixture and/or closed fixture
Thick stick；
On the cross-arm-end card cross-arm-end clamping joint is equipped with closed fixture leading screw corresponding position；On the conductor wire end card with closed fixture
Leading screw corresponding position is equipped with conductor wire end clamping joint；
The front end of the closed fixture leading screw connects with card before corresponding closed fixture or cross-arm-end clamping joint；The closed fixture leading screw
Rear end connects with card after corresponding closed fixture or conductor wire end clamping joint.
The telescoping mechanism includes wing clamp leading screw and arm-tie, and the front end wing corresponding with cross-arm-end card of wing clamp leading screw passes through
Commutated joint connection, and the rear end of wing clamp leading screw is connected with arm-tie front end by the joint that commutates, arm-tie rear end and conductor wire end card pair
Ying Yi is connected by the joint that commutates.
The front end of the closed fixture leading screw is connected with card before corresponding closed fixture or cross-arm-end clamping joint by the joint that commutates；
The rear end of the closed fixture leading screw is connected with card after corresponding closed fixture or conductor wire end clamping joint by the joint that commutates.
The wing clamp leading screw is hydraulic screw rod.
The supporting mechanism for being used for supporting the strain insulator string being replaced is provided between arm-tie corresponding to two telescoping mechanisms,
The supporting mechanism include bend pipe and be arranged on bend pipe both ends be used for arm-tie connection supported joint, supported joint include with
The mounting seat that corresponding bend pipe end is fixedly connected, mounting seat are provided with the neck being used for through arm-tie, sealing are provided with card slot mouth
Screw.
The bend pipe is open V-structure upward.
Beneficial effects of the present invention：
Present invention collection changes strain insulator string, single chip tension insulator, first strain insulator of cross-arm-end and conductor wire end the
A piece of strain insulator is kit, and not only operation job safety, alleviates the working strength of operator, and is easy to instrument
Transport preserves.
Pass through above-mentioned technical proposal of the present invention includes four kinds of working conditions：
The first is used to change strain insulator string, now wing type clamp apparatus separate operaton.During operation, cross-arm-end card is with being replaced
Strain insulator string cross-arm-end towing plate installation connection, conductor wire end card extension parallel with the strain insulator string conductor wire end being replaced
Plate installation connection, wing type clamp apparatus realize the receipts pine of strain insulator string, and then complete strain insulator by controlling wing clamp leading screw to shrink
The replacing of insulator chain.
Second is to be used to change single chip tension insulator, and now the front end of closed fixture leading screw before corresponding closed fixture with blocking
Connection, the rear end of closed fixture leading screw connect with blocking after corresponding closed fixture, closed type fixture and the movable coordinating operation of wing type clamp apparatus.
During operation, first passing through wing type clamp apparatus makes strain insulator closed string loose, then by closed type fixture with being replaced before and after strain insulator
Two adjacent strain insulator clampings, the receipts pine for realizing the strain insulator being replaced is shunk by closed fixture leading screw afterwards,
And then complete the replacing of single chip tension insulator.
The third is used to change first strain insulator of cross-arm-end, now the front end of closed fixture leading screw and corresponding horizontal stroke
The connection of end clamping joint is carried on a shoulder pole, the rear end of closed fixture leading screw connects with blocking after corresponding closed fixture, and card is not involved in operation before closed fixture, closes
Formula fixture and wing type clamp apparatus interconnection system coordinating operation.During operation, first passing through wing type clamp apparatus makes strain insulator closed string loose, now by
Without adjacent strain insulator on front side of first strain insulator of cross-arm-end, therefore the front end of closed fixture leading screw and cross-arm-end card
Joint connects, and blocks after closed fixture and is replaced strain insulator clamping adjacent on rear side of strain insulator, passes through closed fixture afterwards
Leading screw shrinks the receipts pine for realizing the strain insulator being replaced, and then completes the replacing of first strain insulator of cross-arm-end.
4th kind is used for first, restringing end strain insulator, and now the front end of closed fixture leading screw is closed with corresponding
Block connection before formula card, the rear end of closed fixture leading screw connects with corresponding conductor wire end clamping joint, and card is not involved in operation after closed fixture, closes
Formula fixture and wing type clamp apparatus interconnection system coordinating operation.During operation, first passing through wing type clamp apparatus makes strain insulator closed string loose, now by
Without adjacent strain insulator on rear side of first strain insulator of conductor wire end, therefore the rear end of closed fixture leading screw and conductor wire end card
Joint connects, and blocks before closed fixture and is replaced strain insulator clamping adjacent on front side of strain insulator, passes through closed fixture afterwards
Leading screw shrinks the receipts pine for realizing the strain insulator being replaced, and then completes the replacing of first strain insulator of conductor wire end.
It is additionally provided with the present invention between arm-tie corresponding to two telescoping mechanisms for supporting the strain insulator string being replaced
Supporting mechanism, the supporting mechanism include bend pipe and be arranged on bend pipe both ends be used for arm-tie connection supported joint, branch
Support joint includes the mounting seat being fixedly connected with corresponding bend pipe end, and mounting seat is provided with the neck being used for through arm-tie, neck
Sealing screw is provided with mouthful.Due to the presence of supporting mechanism, after strain insulator string relaxes, supporting mechanism is by strain insulator
String is held, and is extractd the required insulator changed and is changed.
The bend pipe is open V-structure upward, to adapt to the strain insulator string of different size.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of cross-arm-end card in the present invention；
Fig. 3 is the schematic diagram of conductor wire end card in the present invention；
Fig. 4 is the schematic diagram of wing clamp leading screw in the present invention；
Fig. 5 is the schematic diagram of arm-tie in the present invention；
Fig. 6 is the schematic diagram of closed type fixture in the present invention；
Fig. 7 is the schematic diagram of commutation joint in the present invention；
Fig. 8 is the schematic diagram of supporting mechanism in the present invention；
Fig. 9 is Fig. 8 top view.
Embodiment
As shown in Figures 1 to 7, the device for being used to change strain insulator of the invention, including for changing strain insulator insulation
The wing type clamp apparatus of substring and the closed type fixture for changing single chip tension insulator, the wing type clamp apparatus are included with being replaced
Strain insulator string cross-arm-end towing plate installation connection cross-arm-end card 1 and the strain insulator string conductor wire end with being replaced
The conductor wire end card 7 of parallel hanging plate installation connection, cross-arm-end card 1 and conductor wire end card 7 are bi-wing configuration, and cross-arm-end card 1 and are led
Connected respectively by telescoping mechanism between the corresponding wing of line end card 7.
The telescoping mechanism includes wing clamp leading screw 3 and arm-tie 4, front end and the 1 corresponding wing of cross-arm-end card of wing clamp leading screw 3
By commutating, joint is connected, and the rear end of wing clamp leading screw 3 is connected with the front end of arm-tie 4 by the joint that commutates, the rear end of arm-tie 4 and wire
The card 7 corresponding wing in end is connected by the joint that commutates.
The closed type fixture include closed fixture before card 10 and/or closed fixture after card 8 and and two or so be set up in parallel
Closed fixture leading screw 9；.
On the cross-arm-end card 1 cross-arm-end clamping joint 2 is equipped with the corresponding position of closed fixture leading screw 7；On the conductor wire end card 7
Conductor wire end clamping joint 6 is equipped with the corresponding position of closed fixture leading screw 9.
The front end of the closed fixture leading screw 9 passes through the joint that commutates with card 10 or cross-arm-end clamping joint 2 before corresponding closed fixture
Connection；The rear end of the closed fixture leading screw 9 is connected with card 8 after corresponding closed fixture or conductor wire end clamping joint 6 by the joint that commutates.
Wing clamp leading screw described in the present embodiment is hydraulic screw rod.
Present invention collection changes strain insulator string, single chip tension insulator, first strain insulator of cross-arm-end and wire
It is kit to hold first strain insulator, and not only operation job safety, alleviates the working strength of operator, and is easy to
Instrument transport preserves.
Pass through above-mentioned technical proposal of the present invention includes four kinds of working conditions：
The first is used to change strain insulator string, now wing type clamp apparatus separate operaton.During operation, cross-arm-end card 1 with by more
The cross-arm-end towing plate of the strain insulator string 11 installation connection changed, conductor wire end card 7 and the wire of strain insulator string 11 being replaced
Hold the installation connection of row hanging plate level with both hands, wing type clamp apparatus is realized the receipts pine of strain insulator string, entered by controlling wing clamp leading screw 3 to shrink
And complete the replacing of strain insulator string.The not independent accompanying drawing signal of the working condition.
Second i.e. be used for change single chip tension insulator, now the front end of closed fixture leading screw 9 with before corresponding closed fixture
The connection of card 10, the rear end of closed fixture leading screw 9 connect with card 8 after corresponding closed fixture, closed type fixture with wing type clamp apparatus is movable matches somebody with somebody
Cooperation industry.During operation, first passing through wing type clamp apparatus makes strain insulator string 11 receive pine, then that closed type fixture is exhausted with being replaced strain insulator
Two adjacent strain insulator clampings before and after edge, shunk by closed fixture leading screw 9 realize that the strain insulator being replaced insulate afterwards
The receipts pine of son, and then complete the replacing of single chip tension insulator.The working condition is as shown in Figure 1.
The third i.e. be used for change first strain insulator of cross-arm-end, now the front end of closed fixture leading screw 9 with it is corresponding
Cross-arm-end clamping joint 2 is connected, the rear end of closed fixture leading screw 9 and the connection of card 8 after corresponding closed fixture, and card 10 is not involved in before closed fixture
Operation, closed type fixture and wing type clamp apparatus interconnection system coordinating operation.During operation, first passing through wing type clamp apparatus receives strain insulator string 11
Pine, now due on front side of first strain insulator of cross-arm-end without adjacent strain insulator, therefore the front end of closed fixture leading screw 9
It is connected with cross-arm-end clamping joint 2, the 8 strain insulator clampings adjacent on rear side of strain insulator with being replaced is blocked after closed fixture, it
The receipts pine for realizing the strain insulator being replaced is shunk by closed fixture leading screw 9 afterwards, and then it is exhausted to complete first strain insulator of cross-arm-end
The replacing of edge.The not independent accompanying drawing signal of the working condition.
4th kind i.e. be used for first, restringing end strain insulator, now the front end of closed fixture leading screw 9 with it is corresponding
The connection of card 10, the rear end of closed fixture leading screw 9 are connected with corresponding conductor wire end clamping joint 6 before closed fixture, and 8 are blocked after closed fixture and is not involved in
Operation, closed type fixture and wing type clamp apparatus interconnection system coordinating operation.During operation, first passing through wing type clamp apparatus receives strain insulator string 11
Pine, now due on rear side of first strain insulator of conductor wire end without adjacent strain insulator, therefore the rear end of closed fixture leading screw 9
It is connected with conductor wire end clamping joint 6, the 10 strain insulator clampings adjacent on front side of strain insulator with being replaced is blocked before closed fixture, it
The receipts pine for realizing the strain insulator being replaced is shunk by closed fixture leading screw 9 afterwards, and then it is exhausted to complete first strain insulator of conductor wire end
The replacing of edge.The not independent accompanying drawing signal of the working condition.
In addition, as shown in Figure 8 and Figure 9, use is also transversely provided between arm-tie 4 corresponding to two telescoping mechanisms in the present embodiment
In the supporting mechanism for the strain insulator string 11 that support is replaced（That is bottle-holding rack）, supporting mechanism is uniform multiple along the longitudinal direction,
It is used cooperatively when in use with wing type clamp apparatus.The supporting mechanism include bend pipe 41 and be arranged on the both ends of bend pipe 41 be used for drawing
The supported joint of plate connection, supported joint include the mounting seat 42 being fixedly connected with corresponding bend pipe end, and mounting seat 42 is provided with
For the neck 43 through arm-tie 4, sealing screw 44 is provided with 43 mouthfuls of neck.Due to the presence of supporting mechanism, when strain insulator insulate
After substring relaxation, supporting mechanism holds strain insulator string 11, extracts the required insulator changed and is changed.
The bend pipe 41 is open V-structure upward, to adapt to the strain insulator string of different size.
Above example is only to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (6)
1. the device for changing strain insulator, including for changing the wing type clamp apparatus of strain insulator string and for changing
The closed type fixture of single chip tension insulator, it is characterised in that：The wing type clamp apparatus includes the strain insulator string with being replaced
The cross-arm-end card of cross-arm-end towing plate installation connection and the installation of the parallel hanging plate of the strain insulator string conductor wire end with being replaced connect
The conductor wire end card connect, cross-arm-end card and conductor wire end card are bi-wing configuration, and between cross-arm-end card and the corresponding wing of conductor wire end card
Connected respectively by telescoping mechanism；
The closed type fixture includes card and two or so the closed fixture silks being set up in parallel after card before closed fixture and/or closed fixture
Thick stick；
On the cross-arm-end card cross-arm-end clamping joint is equipped with closed fixture leading screw corresponding position；On the conductor wire end card with closed fixture
Leading screw corresponding position is equipped with conductor wire end clamping joint；
The front end of the closed fixture leading screw connects with card before corresponding closed fixture or cross-arm-end clamping joint；The closed fixture leading screw
Rear end connects with card after corresponding closed fixture or conductor wire end clamping joint.
2. the device according to claim 1 for being used to change strain insulator, it is characterised in that：The telescoping mechanism includes
Wing clamp leading screw and arm-tie, the front end wing corresponding with cross-arm-end card of wing clamp leading screw are connected by the joint that commutates, wing clamp leading screw
Rear end be connected with arm-tie front end by the joint that commutates, the arm-tie rear end wing corresponding with conductor wire end card pass through commutate joint connect.
3. the device according to claim 1 or 2 for being used to change strain insulator, it is characterised in that：The closed fixture silk
The front end of thick stick is connected with card before corresponding closed fixture or cross-arm-end clamping joint by the joint that commutates；The rear end of the closed fixture leading screw
Connected with card after corresponding closed fixture or conductor wire end clamping joint by the joint that commutates.
4. the device according to claim 3 for being used to change strain insulator, it is characterised in that：The wing clamp leading screw is
Hydraulic screw rod.
5. the device according to claim 2 for being used to change strain insulator, it is characterised in that：Two telescoping mechanisms are corresponding
Arm-tie between be provided with and be used to supporting the supporting mechanism of strain insulator string being replaced, the supporting mechanism include bend pipe and
It is arranged on bend pipe both ends and is used for the supported joint with arm-tie connection, supported joint includes the peace being fixedly connected with corresponding bend pipe end
Seat is filled, mounting seat is provided with the neck being used for through arm-tie, sealing screw is provided with card slot mouth.
6. the device according to claim 5 for being used to change strain insulator, it is characterised in that：The bend pipe is open court
On V-structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722545.7A CN107425474B (en) | 2017-08-22 | 2017-08-22 | Device for replacing tension insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722545.7A CN107425474B (en) | 2017-08-22 | 2017-08-22 | Device for replacing tension insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107425474A true CN107425474A (en) | 2017-12-01 |
| CN107425474B CN107425474B (en) | 2023-05-26 |
Family
ID=60434291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710722545.7A Active CN107425474B (en) | 2017-08-22 | 2017-08-22 | Device for replacing tension insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107425474B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728542A (en) * | 2019-01-30 | 2019-05-07 | 云南电网有限责任公司昆明供电局 | ± 500kV power line tension insulator string replaces any method |
| CN114123030A (en) * | 2021-11-24 | 2022-03-01 | 国网江苏省电力有限公司检修分公司 | Replacement tool and replacement method for triple strain insulator string |
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| JPH0438230A (en) * | 1990-05-30 | 1992-02-07 | Nippon Densetsu Kogyo Kk | Replacing appliance for catenary wire insulator and method thereof |
| CN2665882Y (en) * | 2003-10-20 | 2004-12-22 | 沈鸿年 | Single sheet rimless replacing device for insulator |
| JP2007027090A (en) * | 2006-05-02 | 2007-02-01 | Asahi Tec Corp | Tension insulator set |
| CN101022212A (en) * | 2007-03-23 | 2007-08-22 | 上海市电力公司超高压输变电公司 | Live line replacing method high voltage transmission line strain insulator-string and device |
| CN101916971A (en) * | 2010-03-23 | 2010-12-15 | 福建省电力有限公司厦门电业局 | Earth potential live replacing device for tangent tower inverted insulator string on attachment plate |
| JP2013046535A (en) * | 2011-08-26 | 2013-03-04 | Tokyo Electric Power Co Inc:The | Replacing unit for insulator or the like of insulator device for power transmission |
| CN203690800U (en) * | 2014-01-08 | 2014-07-02 | 云南电网公司带电作业分公司 | Integral clamping tool used for replacing cross arm end linear string insulator |
| CN205070303U (en) * | 2015-10-30 | 2016-03-02 | 国网青海省电力公司检修公司 | 750kV circuit block of four strain insulator string tip fixture |
| JP2016146687A (en) * | 2015-02-06 | 2016-08-12 | 中国電力株式会社 | Insulator replacement assisting tool |
| CN106451214A (en) * | 2016-10-28 | 2017-02-22 | 国网浙江省电力公司金华供电公司 | Combined tool for electrically replacing extra-high voltage same-tower double-circuit tension insulator |
| CN207074824U (en) * | 2017-08-22 | 2018-03-06 | 河南送变电建设有限公司 | For changing the device of strain insulator |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0438230A (en) * | 1990-05-30 | 1992-02-07 | Nippon Densetsu Kogyo Kk | Replacing appliance for catenary wire insulator and method thereof |
| CN2665882Y (en) * | 2003-10-20 | 2004-12-22 | 沈鸿年 | Single sheet rimless replacing device for insulator |
| JP2007027090A (en) * | 2006-05-02 | 2007-02-01 | Asahi Tec Corp | Tension insulator set |
| CN101022212A (en) * | 2007-03-23 | 2007-08-22 | 上海市电力公司超高压输变电公司 | Live line replacing method high voltage transmission line strain insulator-string and device |
| CN101916971A (en) * | 2010-03-23 | 2010-12-15 | 福建省电力有限公司厦门电业局 | Earth potential live replacing device for tangent tower inverted insulator string on attachment plate |
| JP2013046535A (en) * | 2011-08-26 | 2013-03-04 | Tokyo Electric Power Co Inc:The | Replacing unit for insulator or the like of insulator device for power transmission |
| CN203690800U (en) * | 2014-01-08 | 2014-07-02 | 云南电网公司带电作业分公司 | Integral clamping tool used for replacing cross arm end linear string insulator |
| JP2016146687A (en) * | 2015-02-06 | 2016-08-12 | 中国電力株式会社 | Insulator replacement assisting tool |
| CN205070303U (en) * | 2015-10-30 | 2016-03-02 | 国网青海省电力公司检修公司 | 750kV circuit block of four strain insulator string tip fixture |
| CN106451214A (en) * | 2016-10-28 | 2017-02-22 | 国网浙江省电力公司金华供电公司 | Combined tool for electrically replacing extra-high voltage same-tower double-circuit tension insulator |
| CN207074824U (en) * | 2017-08-22 | 2018-03-06 | 河南送变电建设有限公司 | For changing the device of strain insulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728542A (en) * | 2019-01-30 | 2019-05-07 | 云南电网有限责任公司昆明供电局 | ± 500kV power line tension insulator string replaces any method |
| CN114123030A (en) * | 2021-11-24 | 2022-03-01 | 国网江苏省电力有限公司检修分公司 | Replacement tool and replacement method for triple strain insulator string |
| CN114123030B (en) * | 2021-11-24 | 2024-02-23 | 国网江苏省电力有限公司检修分公司 | Tool and method for replacing triple strain insulator string |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107425474B (en) | 2023-05-26 |
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Address after: 450051 Zhengzhou, Central Plains District, Henan West Road, No. 76 Applicant after: HENAN POWER TRANSMISSION AND TRANSFORMATION CONSTRUCTION Co.,Ltd. Applicant after: State Grid Corporation of China Applicant after: HANZHONG QUNFENG MACHINERY MANUFACTURE CO.,LTD. Address before: 450051 Zhengzhou, Central Plains District, Henan West Road, No. 76 Applicant before: HENAN TRANSMISSION AND DISTRIBUTION ENGINEERING Co. Applicant before: State Grid Corporation of China Applicant before: HANZHONG QUNFENG MACHINERY MANUFACTURE CO.,LTD. |
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