CN105846181B - A kind of high-voltage grounding wire for being easily installed dismounting - Google Patents
A kind of high-voltage grounding wire for being easily installed dismounting Download PDFInfo
- Publication number
- CN105846181B CN105846181B CN201610170341.2A CN201610170341A CN105846181B CN 105846181 B CN105846181 B CN 105846181B CN 201610170341 A CN201610170341 A CN 201610170341A CN 105846181 B CN105846181 B CN 105846181B
- Authority
- CN
- China
- Prior art keywords
- bar
- insulating
- insulating bar
- clip body
- support rod
- 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.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/22—End pieces terminating in a spring clip
-
- 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 high-voltage grounding wire for being easily installed dismounting,The operation supporting part being detachably connected including operating head and with operating head,Operating head includes wire clip body,Connector,Upper grip and lower chuck,Upper grip is by connector with being fixedly connected at the top of wire clip body,The bottom of lower chuck sets bearing pin,Wire clip body is provided with the through hole being adapted with bearing pin,Bearing pin passes outside through hole and is provided with link,Spring is arranged with bearing pin,Operation supporting part includes insulating support rod,Insulating support rod is provided with insulating bar,Insulating bar is provided with insulation drag hook bar,The top of insulation drag hook bar is provided with the drag hook being adapted with link,The upper end of insulating support rod is symmetrical arranged sector gear,The top of insulating bar is provided with the two-way rack being adapted with sector gear,The jig arm being adapted with wire clip body is additionally provided with sector gear.The present invention is easily installed on high-voltage line, and will not damage high-voltage line in dismounting, simple and convenient, safe and practical.
Description
Technical field
The invention mainly relates to power safety technique field, specifically a kind of high-voltage grounding wire for being easily installed dismounting.
Background technology
Need to exist for guarantee worker safety during the high-tension apparatus interruption maintenance such as transformer station, transmission line of electricity, distribution line
May be sent a telegram here side installing ground wire, and ground wire connection high-tension apparatus part uses spring clip more, to ensure that folder is firmly linked with admittedly, the spring
It is larger to press from both sides general hypertonic power, larger strength is needed when pulling open, is unfavorable for efficiently carrying out the work, also easily damages high-voltage line
Road.
The content of the invention
In order to solve deficiency of the prior art, the present invention provides a kind of high-voltage grounding wire for being easily installed dismounting, convenient
Operating head is arranged on high-voltage line and is used for high-voltage earthing work, and high-voltage line will not be damaged in disassembling section head, without stepping on
High operation, simple and convenient safety.
The present invention to achieve the above object, is achieved through the following technical solutions：
A kind of high-voltage grounding wire for being easily installed dismounting, including operating head and the operation that is detachably connected with operating head support
Portion, the operating head include wire clip body, connector, upper grip and lower chuck, and the upper grip passes through connector and wire clamp master
It is fixedly connected at the top of body, the upper grip is provided with binding post, and wire, the lower chuck are connected with the binding post
It is slidably connected positioned at the downside of upper grip and with connector, the bottom of the lower chuck also sets up vertical bearing pin, the wire clamp
Main body is provided with the through hole being adapted with bearing pin, and the one end of the bearing pin away from lower chuck passes outside through hole and is provided with link,
The link is flexibly connected with bearing pin, and spring is arranged with the bearing pin, and the bottom of the through hole is provided with what is be adapted with spring
First block, the bearing pin is provided with the second block being adapted with spring, and the second block is located at the upside of the first block, institute
The both ends for stating spring are fixedly connected with the first block and the second block respectively；The operation supporting part includes insulating support rod, institute
State insulating support rod and be provided with insulating bar parallel with it, the insulating bar is slidably connected with insulating support rod, institute
State insulating bar and be provided with insulation drag hook bar parallel with it, the insulation drag hook bar is slidably connected with insulating bar, institute
The top for stating insulation drag hook bar is provided with the drag hook being adapted with link, and the upper end of the insulating support rod is close to insulating bar
Simultaneously it is rotatablely connected along the vertical center symmetric setting sector gear of insulating bar, the sector gear with insulating support rod,
The top of the insulating bar is provided with the two-way rack being adapted with sector gear, is additionally provided with the sector gear and wire clamp
The adaptable jig arm of main body.
The upper grip is provided with the first arc surface being recessed upwards close to the one side of lower chuck.
The lower chuck is provided with the second arc surface to lower recess close to the one side of upper grip.
The jig arm is provided with the groove being adapted with wire clip body.
The inner surface of the groove or/and the outer surface of wire clip body are provided with skid resistant course.
The insulating support rod, insulating bar, insulation drag hook bar are expansion link.
The insulating bar is provided with limited post, and the limited post is hinged with insulating bar, the insulating support rod
The limited block being adapted with limited post is provided with, when jig arm clamps wire clip body, the limited post is caught in the spacing of limited block
In groove.
The insulating support rod is provided with the first chute being adapted with insulating bar, the insulating bar and first
Slide connects, and the length of the first chute is less than the length of insulating support rod.
The insulating bar is provided with second chute adaptable with insulation drag hook bar, the insulation drag hook bar and second
Slide connects, and the length of the second chute is less than the length of insulating bar.
Prior art is contrasted, beneficial effect of the present invention is：
1st, the present invention is convenient is arranged on operating head on high-voltage line, and will not damage high-voltage line, nothing in disassembling section head
Need to be ascended a height operation, simple and convenient safety.
2nd, upper grip is provided with the first arc surface for being recessed upwards close to the one side of lower chuck, lower chuck close to upper grip one
Face is provided with the second arc surface to lower recess, and the first arc surface and the cylindrical structural of the second arc surface and high-voltage line are adapted,
It is easy to high tension lead.
3rd, jig arm is provided with the groove being adapted with wire clip body, and wire clip body can be cylindrical structural, corresponding recessed
Groove can be the groove of circular arc, be easy to jig arm to clamp wire clip body and operated.
4th, in the groove or/and outer surface of wire clip body is provided with skid resistant course, can only it is fluted it is interior be provided with skid resistant course, also may be used
To only have the outer surface of wire clip body to be provided with skid resistant course, it can be equipped with and be fitted to each other with the outer surface in groove with wire clip body
Skid resistant course, the frictional force between jig arm and wire clip body can be increased, prevent jig arm and wire clip body from sliding, be convenient for grasping
Make.
5th, insulating support rod, insulating bar, insulation drag hook bar are expansion link, can adjust their length, make this
Invention is easy to be articulated on the high-voltage line of different height, and when without using the present invention, is easy to shrink and places, reduce volume.
6th, after jig arm clamps wire clip body, limited post is caught in the stopper slot of limited block, can prevent insulating bar
Move up and down, so as to facilitate jig arm to clamp wire clip body.
7th, insulating support rod is provided with the first chute being adapted with insulating bar, and insulating bar and the first chute are slided
Dynamic connection, and the length of the first chute can be less than the length of insulating support rod, insulating bar is provided with and the drag hook bar that insulate
The second adaptable chute, insulation drag hook bar is connected with the second slide, and the length of the second chute is less than insulating bar
Length, connection it is simple and convenient, it is cost-effective.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the structural representation for operating supporting part.
Label shown in accompanying drawing：1st, wire clip body；2nd, connector；3rd, upper grip；4th, lower chuck；5th, bearing pin；6th, through hole；7、
Link；8th, spring；9th, the first block；10th, the second block；11st, insulating support rod；12nd, insulating bar；13rd, insulate drag hook bar；
14th, drag hook；15th, sector gear；16th, two-way rack；17th, jig arm；18th, the first arc surface；19th, the second arc surface；20th, groove；
21st, skid resistant course；22nd, binding post；23rd, wire；24th, limited post；25th, limited block；26th, stopper slot；27th, the first chute；28th,
Two chutes.
Embodiment
With reference to the drawings and specific embodiments, the invention will be further described.It should be understood that these embodiments are merely to illustrate
The present invention rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, this area
Technical staff can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims
Limited range.
A kind of high-voltage grounding wire for being easily installed dismounting, including operating head and the operation that is detachably connected with operating head support
Portion, the operating head include wire clip body 1, connector 2, upper grip 3 and lower chuck 4, the upper grip 3 by connector 2 with
The top of wire clip body 1 is fixedly connected, and the upper grip 3 is provided with binding post 22, is connected with and leads on the binding post 22
Line 23.The lower chuck 4 is located at the downside of upper grip 3 and is slidably connected with connector 2, is easy to moving up and down for lower chuck 4, and
Lower chuck 4 is slidably connected with connector 2, and spacing effect is played to lower chuck 4, lower chuck 4 is not deviated by upper grip 3,
It is easy to the clamping of high-voltage line.The bottom of the lower chuck 4 also sets up vertical bearing pin 5, and the wire clip body 1 is provided with and bearing pin
5 adaptable through holes 6, the described one end of bearing pin 5 away from lower chuck 4 pass the outside of through hole 6 and are provided with link 7, the link 7 and
Bearing pin 5 is flexibly connected.Spring 8 is arranged with the bearing pin 5, the bottom of the through hole 6 is provided with the first gear being adapted with spring 8
Block 9, the second block 10 being adapted with spring 8 is additionally provided with the bearing pin 5, and the second block 10 is located at the upper of the first block 9
Side, the both ends of the spring 8 are fixedly connected with the first block 9 and the second block 10 respectively.By the effect of spring 8, can make
Lower chuck 4 moves to the direction of upper grip 3, consequently facilitating high tension lead.The operation supporting part includes insulating support rod 11,
The insulating support rod 11 is provided with insulating bar 12 parallel with it, and the insulating bar 12 is slided with insulating support rod 11
Dynamic connection, is easy to moving up and down for insulating bar 12.The insulating bar 12 is provided with insulation drag hook bar parallel with it
13, the insulation drag hook bar 13 is slidably connected with insulating bar 12, is easy to moving up and down for insulation drag hook bar 13.The insulation
The top of drag hook bar 13 is provided with the drag hook 14 being adapted with link 7, pulls downward on link 7 by drag hook 14, can make lower chuck 4
Move down, make separated by a distance between lower chuck 4 and upper grip 3, be easy to the gripping of high-voltage line.The insulating support rod
11 upper end close to insulating bar 12 vertical center symmetric setting sector gear 15 of the one side along insulating bar 12, it is described
Sector gear 15 is rotatablely connected with insulating support rod 11, and the top of the insulating bar 12 is provided with to be adapted with sector gear 15
Two-way rack 16, the jig arm 17 being adapted with wire clip body 1 is additionally provided with the sector gear 15, moves up insulation operation
During bar 12, two-way rack 16 can be driven to move up, two-way rack 16 drives sector gear 15 to rotate, and sector gear 15 rotates
Jig arm 17 is driven to open, for unclamping wire clip body 1；When moving down insulating bar 12, can drive two-way rack 16 to
Lower movement, two-way rack 16 drive sector gear 15 to rotate, and sector gear 15, which rotates, drives jig arm 17 to close, for clamping wire clamp
Main body 1.
When using of the invention, when operating head is articulated on high-voltage line, jig arm 17 is first set to clamp wire clip body 1, drag hook
14 hold link 7, hold insulating support rod 11 and elevate the present invention on high-voltage line, pull insulation drag hook bar 13 to draw drag hook 14
Dynamic link 7, drives lower chuck 4 to move down, consequently facilitating high-voltage line is stuck between upper grip 3 and lower chuck 4, moves up
Insulating bar 12, jig arm 17 is unclamped wire clip body 1, and drag hook 14 is removed into link 7, lower chuck 4 is in the presence of spring 8
It can be moved to the side of upper grip 3, be easy to high tension lead；When removal operation head, drag hook 14 is first hooked into link 7, Ran Houxiang
Lower pulling insulating bar 12, after making the clamping wire clip body 1 of jig arm 17, insulation drag hook bar 13 is being pulled, is making lower chuck 4 downward
It is mobile, consequently facilitating high-voltage line is taken out between upper grip 3 and lower chuck 4, it is simple and convenient, without operation of ascending a height, secure side
Just.
Further, the upper grip 3 is provided with the first arc surface 18 being recessed upwards close to the one side of lower chuck 4, with height
The cylindrical structural of line ball is adapted, and is easy to high tension lead.
Further, the lower chuck 4 close to upper grip 3 one side be provided with to lower recess the second arc surface 19, with height
The cylindrical structural of line ball is adapted, and is easy to high tension lead.
Further, the jig arm 17 is provided with the groove 20 being adapted with wire clip body 1, and wire clip body 1 can be circle
Column construction, corresponding groove 20 can be the groove of circular arc, are easy to jig arm 17 to clamp wire clip body 1 and operated.
Further, the outer surface of the inner surface of the groove 20 or/and wire clip body 1 is provided with skid resistant course 21, can be only
Fluted 20 inner surface is provided with skid resistant course 21, and the outer surface that can also there was only wire clip body 1 is provided with skid resistant course 21, can be with recessed
The inner surface of groove 20 and the outer surface of wire clip body 1 are equipped with the skid resistant course 21 being fitted to each other, and wire clip body 1 is clamped in jig arm 17
When, increase the frictional force between jig arm 17 and wire clip body 1, prevent jig arm 17 from being slided with wire clip body 1, be convenient for operating.
Further, the insulating support rod 11, insulating bar 12, insulation drag hook bar 13 are expansion link, can be adjusted
Insulating support rod 11, insulating bar 12, the length of insulation drag hook bar 13 are saved, the present invention is conveniently articulated in the height of different height
On line ball, and when without using the present invention, it is easy to shrink and places, reduce volume.
Further, the insulating bar 12 is provided with limited post 24, and the limited post 24 is cut with scissors with insulating bar 12
Connecing, the insulating support rod 11 is provided with the limited block 25 being adapted with limited post 24, when jig arm 17 clamps wire clip body 1,
The limited post 24 is caught in the stopper slot 26 of limited block 25, can prevent insulating bar 12 from moving up and down, so as to convenient folder
Arm 17 clamps wire clip body 1.
The insulating support rod 11 is provided with the first chute 27 being adapted with insulating bar 12, the insulating bar 12
It is slidably connected with the first chute 27, and the length of the first chute 27 is less than the length of insulating support rod 11, connection is simple and convenient, section
About cost.
The insulating bar 12 is provided with second chute 28 adaptable with insulation drag hook bar 13, the insulation drag hook bar
13 are slidably connected with the second chute 28, and the length of the second chute 28 is less than the length of insulating bar 12, and connection is simple and convenient,
It is cost-effective.
Embodiment
A kind of high-voltage grounding wire for being easily installed dismounting, including operating head and the operation that is detachably connected with operating head support
Portion, the operating head include wire clip body 1, connector 2, upper grip 3 and lower chuck 4, the upper grip 3 by connector 2 with
The top of wire clip body 1 is fixedly connected, and the upper grip 3 is provided with binding post 22, is connected with and leads on the binding post 22
Line 23.The lower chuck 4 is located at the downside of upper grip 3 and is slidably connected with connector 2, and the upper grip 3 is close to lower chuck 4
Simultaneously it is provided with the first arc surface 18 being recessed upwards.The lower chuck 4 is provided with to the second of lower recess close to the one side of upper grip 3
Arc surface 19.The bottom of the lower chuck 4 also sets up vertical bearing pin 5, and the wire clip body 1 is provided with to be adapted with bearing pin 5
Through hole 6, the described one end of bearing pin 5 away from lower chuck 4 passes the outside of through hole 6 and is provided with link 7, and the link 7 is lived with bearing pin 5
Dynamic connection.Spring 8 is arranged with the bearing pin 5, the bottom of the through hole 6 is provided with the first block 9 being adapted with spring 8, institute
State bearing pin 5 and be provided with the second block 10 being adapted with spring 8, and the second block 10 is located at the upside of the first block 9, the bullet
The both ends of spring 8 are fixedly connected with the first block 9 and the second block 10 respectively.The operation supporting part includes insulating support rod 11,
The insulating support rod 11 is provided with insulating bar 12 parallel with it, and the insulating support rod 11 is provided with and insulating bar
12 the first adaptable chutes 27, the insulating bar 12 is slidably connected with the first chute 27, and the length of the first chute 27
It is simple and convenient less than the length of insulating support rod 11, connection.The insulating bar 12 is provided with insulation drag hook parallel with it
Bar 13, the insulating bar 12 are provided with second chute 28 adaptable with insulation drag hook bar 13, the insulation drag hook bar 13
It is slidably connected with the second chute 28, and the length of the second chute 28 is less than the length of insulating bar 12.The insulation drag hook bar
13 top is provided with the drag hook 14 being adapted with link 7.The upper end of the insulating support rod 11 is close to the one of insulating bar 12
Vertical center symmetric setting sector gear 15 of the face along insulating bar 12, the sector gear 15 rotate with insulating support rod 11
Connection, the top of the insulating bar 12 are provided with the two-way rack 16 being adapted with sector gear 15.The sector gear 15
On be additionally provided with wire clip body 1 be adapted jig arm 17, the jig arm 17 be provided with wire clip body 1 be adapted groove 20.
The inner surface of the groove 20 and the outer surface of wire clip body 1 are provided with skid resistant course 21.The insulating bar 12 is provided with spacing
Post 24, the limited post 24 is be hinged with insulating bar 12, and the insulating support rod 11 is provided with what is be adapted with limited post 24
Limited block 25, when jig arm 17 clamps wire clip body 1, the limited post 24 is caught in the stopper slot 26 of limited block 25.It is described exhausted
Edge support bar 11, insulating bar 12, insulation drag hook bar 13 are expansion link.The beneficial effect of the present embodiment is：Conveniently will
Operating head is arranged on high-voltage line, and will not damage high-voltage line in disassembling section head, without operation of ascending a height, simple and convenient peace
Entirely.
Claims (9)
1. a kind of high-voltage grounding wire for being easily installed dismounting, it is characterized in that：It is detachably connected including operating head and with operating head
Supporting part is operated, the operating head includes wire clip body (1), connector (2), upper grip (3) and lower chuck (4), the upper folder
For head (3) by connector (2) with being fixedly connected at the top of wire clip body (1), the upper grip (3) is provided with binding post
(22) wire (23), is connected with the binding post (22), the lower chuck (4) is located at the downside of upper grip (3) and with connecting
Fitting (2) is slidably connected, and the bottom of the lower chuck (4) also sets up vertical bearing pin (5), and the wire clip body (1) is provided with
The through hole (6) being adapted with bearing pin (5), the one end of the bearing pin (5) away from lower chuck (4) pass through hole (6) outside and are provided with
Link (7), the link (7) are flexibly connected with bearing pin (5), and spring (8) is arranged with the bearing pin (5), the through hole (6)
Bottom is provided with the first block (9) being adapted with spring (8), and the bearing pin (5) is provided with the second gear being adapted with spring (8)
Block (10), and the second block (10) is located at the upside of the first block (9), the both ends of the spring (8) respectively with the first block (9)
It is fixedly connected with the second block (10)；The operation supporting part includes insulating support rod (11), on the insulating support rod (11)
Provided with insulating bar (12) parallel with it, the insulating bar (12) is slidably connected with insulating support rod (11), described
Insulating bar (12) is provided with insulation drag hook bar (13) parallel with it, the insulation drag hook bar (13) and insulating bar
(12) it is slidably connected, the top of the insulation drag hook bar (13) is provided with the drag hook (14) being adapted with link (7), the insulation branch
The upper end of strut (11) is fan-shaped close to vertical center symmetric setting of the one side along insulating bar (12) of insulating bar (12)
Gear (15), the sector gear (15) are rotatablely connected with insulating support rod (11), are set at the top of the insulating bar (12)
There is the two-way rack (16) being adapted with sector gear (15), be additionally provided with and wire clip body (1) phase on the sector gear (15)
The jig arm (17) of adaptation.
2. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：The upper grip (3)
The first arc surface (18) being recessed upwards is provided with close to the one side of lower chuck (4).
3. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：The lower chuck (4)
The second arc surface (19) to lower recess is provided with close to the one side of upper grip (3).
4. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：On the jig arm (17)
Provided with the groove (20) being adapted with wire clip body (1).
5. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 4, it is characterized in that：The groove (20)
The outer surface of inner surface or/and wire clip body (1) is provided with skid resistant course (21).
6. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：The insulating support rod
(11), insulating bar (12), insulation drag hook bar (13) are expansion link.
7. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：The insulating bar
(12) limited post (24) is provided with, the limited post (24) is be hinged with insulating bar (12), on the insulating support rod (11)
Provided with the limited block (25) being adapted with limited post (24), when jig arm (17) clamps wire clip body (1), the limited post (24)
It is caught in the stopper slot (26) of limited block (25).
8. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：The insulating support rod
(11) the first chute (27) being adapted with insulating bar (12), the insulating bar (12) and the first chute are provided with
(27) it is slidably connected, and the length of the first chute (27) is less than the length of insulating support rod (11).
9. a kind of high-voltage grounding wire for being easily installed dismounting according to claim 1, it is characterized in that：The insulating bar
(12) second chute (28) adaptable with insulation drag hook bar (13), the insulation drag hook bar (13) and the second chute are provided with
(28) it is slidably connected, and the length of the second chute (28) is less than the length of insulating bar (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170341.2A CN105846181B (en) | 2016-03-23 | 2016-03-23 | A kind of high-voltage grounding wire for being easily installed dismounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170341.2A CN105846181B (en) | 2016-03-23 | 2016-03-23 | A kind of high-voltage grounding wire for being easily installed dismounting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105846181A CN105846181A (en) | 2016-08-10 |
| CN105846181B true CN105846181B (en) | 2018-03-27 |
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ID=56583110
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610170341.2A Expired - Fee Related CN105846181B (en) | 2016-03-23 | 2016-03-23 | A kind of high-voltage grounding wire for being easily installed dismounting |
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| Country | Link |
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| CN (1) | CN105846181B (en) |
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| CN203932341U (en) * | 2014-06-19 | 2014-11-05 | 国家电网公司 | High and low pressure busbar grounding device |
| CN204205412U (en) * | 2014-10-14 | 2015-03-11 | 国家电网公司 | Bird's Nest remover on a kind of electric power facility |
| CN105206957A (en) * | 2015-10-17 | 2015-12-30 | 国家电网公司 | Pneumatic lifting high-altitude grounding device |
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|---|---|
| CN105846181A (en) | 2016-08-10 |
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