CN105846181A - High-voltage ground wire easy for assembling and disassembling - Google Patents
High-voltage ground wire easy for assembling and disassembling Download PDFInfo
- Publication number
- CN105846181A CN105846181A CN201610170341.2A CN201610170341A CN105846181A CN 105846181 A CN105846181 A CN 105846181A CN 201610170341 A CN201610170341 A CN 201610170341A CN 105846181 A CN105846181 A CN 105846181A
- Authority
- CN
- China
- Prior art keywords
- bar
- support rod
- clip body
- insulating
- drag hook
- 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
- 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 high-voltage ground wire easy for assembling and disassembling. The ground wire comprises an operating head and an operating supporting part which is detachably connected with the operating head; the operating head comprises a cable clip main body, a connecting piece, an upper clamping head and a lower clamping head; the upper clamping head is fixedly connected with the top of the cable clip main body through the connecting piece; the bottom of the lower clamping head is provided with a pin; the cable clip main body is provided with a through hole which matches with the pin and the pin passes through the through hole to the outside and is provided with a suspension ring; the pin is sleeved by a spring; the operating supporting part comprises an insulated support bar; the insulated support bar is provided with an insulated operating bar; the insulated operating bar is provided with an insulated draw hook bar; the top of the insulated draw hook bar is provided with a draw hook which matches with the suspension ring; the upper end of the insulated support bar is provided with two sector gears which are symmetrically arranged; the top of the insulated operating bar is provided with a bidirectional gear rack which matches with the section gears; each of the section gears is provided with a clamp arm which matches with the cable clip main body. It is convenient to assemble the ground wire on high-voltage lines; and high-voltage lines will not be damaged when the ground wire is disassembled; the ground wire is simple and convenient to use, and is safe and practical.
Description
Technical field
The invention mainly relates to power safety technique field, a kind of high-voltage earthing being easily installed dismounting
Line.
Background technology
For ensureing worker safety during the high pressure equipment interruption maintenances such as transformer station, transmission line of electricity, distribution line
Needing to install earth lead in incoming call side, earth lead connects high pressure equipment part many employings alligator clamp, for protecting
Card folder is firmly linked with solid, and this alligator clamp general hypertonic power is relatively big, needs bigger strength, be unfavorable for efficiently when pulling open
Carry out the work, the most easily damage high-tension line.
Summary of the invention
In order to solve deficiency of the prior art, the present invention provides a kind of high-voltage grounding wire being easily installed dismounting,
Convenient being arranged on high-voltage line by operating head is used for high-voltage earthing work, and will not damage when disassembling section head
High-voltage line, it is not necessary to operation of ascending a height, simple and convenient safety.
The present invention for achieving the above object, is achieved through the following technical solutions:
A kind of high-voltage grounding wire being easily installed dismounting, including operating head and the behaviour that removably connects with operating head
Making supporting part, described operating head includes wire clip body, connector, upper grip and lower chuck, described upper grip
Being connected by the top of connector and wire clip body is fixing, described upper grip is provided with binding post, described in connect
Connecting in line terminals has wire, described lower chuck are positioned at the downside of upper grip and are slidably connected with connector, institute
The bottom stating lower chuck also sets up vertical bearing pin, and described wire clip body is provided with the through hole adapted with bearing pin,
Described bearing pin passes through hole outside away from one end of lower chuck and is provided with link, and described link is with bearing pin activity even
Connecing, described bearing pin is arranged with spring, the bottom of described through hole is provided with the first block adapted with spring,
Described bearing pin is provided with the second block adapted with spring, and the second block is positioned at the upside of the first block,
The two ends of described spring are fixing with the first block and the second block respectively to be connected；Described operation supporting part includes absolutely
Edge support bar, described insulating support rod is provided with insulating bar parallel with it, described insulating bar with
Insulating support rod is slidably connected, and described insulating bar is provided with insulation drag hook bar parallel with it, described absolutely
Edge drag hook bar is slidably connected with insulating bar, and the top of described insulation drag hook bar is provided with and adapts with link
Drag hook, the vertical centrosymmetry of upper end edge of described insulating support rod arranges sector gear, described sector gear with
Insulating support rod is rotationally connected, and the top of described insulating bar is provided with the bi-directional teeth adapted with sector gear
Bar, described sector gear is additionally provided with the jig arm adapted with wire clip body.
Described upper grip is provided with, near the one side of lower chuck, the first arc surface upwards caved in.
Described lower chuck is provided with the second arc surface of concave downward near the one side of upper grip.
Described jig arm is provided with the groove adapted with wire clip body.
The inner surface of described groove is or/and the outer surface of wire clip body is provided with skid resistant course.
Described insulating support rod, insulating bar, insulation drag hook bar are expansion link.
Described insulating bar is provided with limited post, and described limited post is hinged with insulating bar, described insulation
Support bar is provided with the limited block adapted with limited post, when jig arm clamping wire clip body, and described limited post
Snap in the stopper slot of limited block.
Described insulating support rod is provided with the first chute adapted with insulating bar, described insulating bar
It is connected with the first slide, and the length of the first chute is less than the length of insulating support rod.
Described insulating bar is provided with the second chute adapted with the drag hook bar that insulate, described insulation drag hook bar
It is connected with the second slide, and the length of the second chute is less than the length of insulating bar.
Contrast prior art, the present invention has the beneficial effects that:
1, the present invention is convenient is arranged on operating head on high-voltage line, and will not damage high pressure when disassembling section head
Line, it is not necessary to operation of ascending a height, simple and convenient safety.
2, upper grip is provided with, near the one side of lower chuck, the first arc surface upwards caved in, and lower chuck is near upper folder
The one side of head is provided with the circle of the second arc surface of concave downward, the first arc surface and the second arc surface and high-voltage line
Column construction adapts, it is simple to high tension lead.
3, jig arm is provided with the groove adapted with wire clip body, and wire clip body can be cylindrical structural, phase
The groove answered can be the groove of circular arc, it is simple to jig arm clamping wire clip body operates.
4, or/and the outer surface of wire clip body is provided with skid resistant course in groove, can the most fluted in be provided with anti-skidding
Layer, it is also possible to the only outer surface of wire clip body is provided with skid resistant course, it is also possible in groove and outside wire clip body
Surface is equipped with the skid resistant course being fitted to each other, and can increase the frictional force between jig arm and wire clip body, prevent
Jig arm is slided with wire clip body, it is simple to operate.
5, insulating support rod, insulating bar, insulation drag hook bar are expansion link, can regulate their length
Degree, makes the present invention be easy to be articulated on the high-voltage line of differing heights, and when not using the present invention, it is simple to receive
Scaling is put, and reduces volume.
6, when, after jig arm clamping wire clip body, limited post snaps in the stopper slot of limited block, is possible to prevent insulation
Action bars moves up and down, thus facilitates jig arm to clamp wire clip body.
7, insulating support rod is provided with the first chute adapted with insulating bar, insulating bar and first
Slide connects, and the length of the first chute can be less than the length of insulating support rod, on insulating bar
It is provided with the second chute adapted with the drag hook bar that insulate, insulation drag hook bar and the second slide to connect, and the
The length of two chutes, less than the length of insulating bar, connects simple and convenient, cost-effective.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the structural representation of operation supporting part.
Label shown in accompanying drawing: 1, wire clip body；2, connector；3, upper grip；4, lower chuck；5、
Bearing pin；6, through hole；7, link；8, spring；9, the first block；10, the second block；11, insulation
Support bar；12, insulating bar；13, insulation drag hook bar；14, drag hook；15, sector gear；16、
Two-way tooth bar；17, jig arm；18, the first arc surface；19, the second arc surface；20, groove；21, anti-
Slip layer；22, binding post；23, wire；24, limited post；25, limited block；26, stopper slot；27、
First chute；28, the second chute.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the invention will be further described.Only should be understood that these embodiments
For the present invention being described rather than limiting the scope of the present invention.In addition, it is to be understood that say having read the present invention
After the content awarded, the present invention can be made various changes or modifications by those skilled in the art, these shapes of equal value
Formula falls within the application appended claims limited range equally.
A kind of high-voltage grounding wire being easily installed dismounting, including operating head and the behaviour that removably connects with operating head
Making supporting part, described operating head includes wire clip body 1, connector 2, upper grip 3 and lower chuck 4, described
Upper grip 3 is connected by connector 2 is fixing with the top of wire clip body 1, and described upper grip 3 is provided with and connects
Line terminals 22, described binding post 22 connects and has wire 23.Described lower chuck 4 is positioned at upper grip 3
Downside and being slidably connected with connector 2, it is simple to moving up and down of lower chuck 4, and lower chuck 4 and connector 2
Be slidably connected, lower chuck 4 is played spacing effect, makes lower chuck 4 not deviate by upper grip 3, it is simple to
The clamping of high-voltage line.The bottom of described lower chuck 4 also sets up vertical bearing pin 5, and described wire clip body 1 sets
Having the through hole 6 adapted with bearing pin 5, described bearing pin 5 passes through hole 6 outside also away from one end of lower chuck 4
Being provided with link 7, described link 7 is flexibly connected with bearing pin 5.Spring 8 it is arranged with on described bearing pin 5, described
The bottom of through hole 6 is provided with the first block 9 adapted with spring 8, and described bearing pin 5 is additionally provided with and spring 8
The second block 10 adapted, and the second block 10 is positioned at the upside of the first block 9, the two of described spring 8
End is fixed be connected with the first block 9 and the second block 10 respectively.By the effect of spring 8, lower folder can be made
4 move to the direction of upper grip 3, consequently facilitating high tension lead.Described operation supporting part includes insulation
Support bar 11, described insulating support rod 11 is provided with insulating bar 12 parallel with it, described insulation behaviour
Make bar 12 to be slidably connected with insulating support rod 11, it is simple to moving up and down of insulating bar 12.Described insulation
Action bars 12 is provided with insulation drag hook bar 13 parallel with it, described insulation drag hook bar 13 and insulating bar
12 are slidably connected, it is simple to moving up and down of insulation drag hook bar 13.The top of described insulation drag hook bar 13 is provided with
The drag hook 14 adapted with link 7, pulls downward on link 7 by drag hook 14, and lower chuck 4 can be made downward
Mobile, make between lower chuck 4 and upper grip 3 separated by a distance, it is simple to the gripping of high-voltage line.Described
The vertical centrosymmetry of upper end edge of insulating support rod 11 arranges sector gear 15, and described sector gear 15 is with exhausted
Edge support bar 11 is rotationally connected, and the top of described insulating bar 12 is provided with and adapts with sector gear 15
Two-way tooth bar 16, described sector gear 15 is additionally provided with the jig arm 17 adapted with wire clip body 1, upwards
During mobile insulating bar 12, two-way tooth bar 16 can be driven to move up, two-way tooth bar 16 drives sector
Gear 15 rotates, and sector gear 15 rotates and drives jig arm 17 to open, and is used for unclamping wire clip body 1；Downwards
During mobile insulating bar 12, two-way tooth bar 16 can be driven to move down, two-way tooth bar 16 drives sector
Gear 15 rotates, and sector gear 15 rotates and drives jig arm 17 to close, and is used for clamping wire clip body 1.
When using the present invention, when being articulated on high-voltage line by operating head, jig arm 17 is first made to clamp wire clip body
1, link 7 held by drag hook 14, holds insulating support rod 11 and elevates on high-voltage line by the present invention, pulls absolutely
Edge drag hook bar 13 makes drag hook 14 pull link 7, drives lower chuck 4 to move down, consequently facilitating by high-voltage line
It is stuck between upper grip 3 and lower chuck 4, moves up insulating bar 12, make jig arm 17 unclamp wire clamp master
Body 1, and drag hook 14 is removed link 7, lower chuck 4 can be to upper grip 3 side under the effect of spring 8
Mobile, it is simple to high tension lead；When removal operation head, first drag hook 14 is hooked link 7, downwards
Pull insulating bar 12, after making jig arm 17 clamp wire clip body 1, pull insulation drag hook bar 13,
Lower chuck 4 is made to move down, consequently facilitating high-voltage line is taken out between upper grip 3 and lower chuck 4, letter
Folk prescription just, operation of need not ascending a height, safe ready.
Further, described upper grip 3 is provided with, near the one side of lower chuck 4, the first arc surface upwards caved in
18, adapt with the cylindrical structural of high-voltage line, it is simple to high tension lead.
Further, described lower chuck 4 is provided with the second arc surface of concave downward near the one side of upper grip 3
19, adapt with the cylindrical structural of high-voltage line, it is simple to high tension lead.
Further, described jig arm 17 is provided with the groove 20 adapted with wire clip body 1, wire clip body 1
Can be cylindrical structural, corresponding groove 20 can be the groove of circular arc, it is simple to jig arm 17 clamps line
Clip main body 1 operates.
Further, the inner surface of described groove 20 or/and the outer surface of wire clip body 1 is provided with skid resistant course 21,
Can the most fluted 20 inner surface be provided with skid resistant course 21, it is also possible to the only outer surface of wire clip body 1 is provided with
Skid resistant course 21, it is also possible to the inner surface of groove 20 and the outer surface of wire clip body 1 are equipped be fitted to each other anti-
Slip layer 21, when jig arm 17 clamps wire clip body 1, increases the friction between jig arm 17 and wire clip body 1
Power, prevents jig arm 17 from sliding with wire clip body 1, it is simple to operate.
Further, described insulating support rod 11, insulating bar 12, insulation drag hook bar 13 are flexible
Bar, can regulate insulating support rod 11, insulating bar 12, the length of insulation drag hook bar 13, make this
Bright conveniently it is articulated on the high-voltage line of differing heights, and when not using the present invention, it is simple to shrink and place, subtract
Small size.
Further, described insulating bar 12 is provided with limited post 24, described limited post 24 and insulation behaviour
Making bar 12 hinged, described insulating support rod 11 is provided with the limited block 25 adapted with limited post 24, works as folder
When arm 17 clamps wire clip body 1, described limited post 24 snaps in the stopper slot 26 of limited block 25, permissible
Prevent insulating bar 12 from moving up and down, thus facilitate jig arm 17 to clamp wire clip body 1.
Described insulating support rod 11 is provided with the first chute 27 adapted with insulating bar 12, described insulation
Action bars 12 is slidably connected with the first chute 27, and the length of the first chute 27 is less than insulating support rod 11
Length, connect simple and convenient, cost-effective.
Described insulating bar 12 is provided with the second chute 28 adapted with the drag hook bar 13 that insulate, described absolutely
Edge drag hook bar 13 is slidably connected with the second chute 28, and the length of the second chute 28 is less than insulating bar 12
Length, connect simple and convenient, cost-effective.
Embodiment
A kind of high-voltage grounding wire being easily installed dismounting, including operating head and the behaviour that removably connects with operating head
Making supporting part, described operating head includes wire clip body 1, connector 2, upper grip 3 and lower chuck 4, described
Upper grip 3 is connected by connector 2 is fixing with the top of wire clip body 1, and described upper grip 3 is provided with and connects
Line terminals 22, described binding post 22 connects and has wire 23.Described lower chuck 4 is positioned at upper grip 3
Downside and being slidably connected with connector 2, described upper grip 3 is provided with near the one side of lower chuck 4 and upwards caves in
The first arc surface 18.Described lower chuck 4 is provided with the second circular arc of concave downward near the one side of upper grip 3
Face 19.The bottom of described lower chuck 4 also sets up vertical bearing pin 5, and described wire clip body 1 is provided with and pin
The through hole 6 that axle 5 adapts, described bearing pin 5 passes through hole 6 outside away from one end of lower chuck 4 and is provided with extension
Ring 7, described link 7 is flexibly connected with bearing pin 5.Spring 8, described through hole 6 it is arranged with on described bearing pin 5
Bottom be provided with the first block 9 adapted with spring 8, described bearing pin 5 is provided with and adapts with spring 8
Second block 10, and the second block 10 is positioned at the upside of the first block 9, the two ends of described spring 8 respectively with
First block 9 and the second fixing connection of block 10.Described operation supporting part includes insulating support rod 11, described
Insulating support rod 11 is provided with insulating bar 12 parallel with it, described insulating support rod 11 be provided with absolutely
The first chute 27 that edge action bars 12 adapts, described insulating bar 12 is slidably connected with the first chute 27,
And first the length of chute 27 less than the length of insulating support rod 11, connect simple and convenient.Described insulation behaviour
Making bar 12 and be provided with insulation drag hook bar 13 parallel with it, described insulating bar 12 is provided with and draws with insulation
The second chute 28 that shank 13 adapts, described insulation drag hook bar 13 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 top of described insulation drag hook bar 13 is provided with
The drag hook 14 adapted with link 7.The vertical centrosymmetry of upper end edge of described insulating support rod 11 arranges sector
Gear 15, described sector gear 15 is rotationally connected with insulating support rod 11, the top of described insulating bar 12
Portion is provided with the two-way tooth bar 16 adapted with sector gear 15.It is additionally provided with and wire clamp on described sector gear 15
The jig arm 17 that main body 1 adapts, described jig arm 17 is provided with the groove 20 adapted with wire clip body 1.
The inner surface of described groove 20 and the outer surface of wire clip body 1 are provided with skid resistant course 21.Described insulating bar
12 are provided with limited post 24, and described limited post 24 is hinged with insulating bar 12, described insulating support rod 11
It is provided with the limited block 25 adapted with limited post 24, when jig arm 17 clamps wire clip body 1, described limit
Position post 24 snaps in the stopper slot 26 of limited block 25.Described insulating support rod 11, insulating bar 12,
Insulation drag hook bar 13 is expansion link.Having the beneficial effects that of the present embodiment: conveniently operating head is arranged on height
On line ball, and high-voltage line will not be damaged when disassembling section head, it is not necessary to operation of ascending a height, simple and convenient safety.
Claims (9)
1. it is easily installed a high-voltage grounding wire for dismounting, it is characterized in that: include operating head and can with operating head
The operation supporting part that dismounting connects, described operating head includes wire clip body (1), connector (2), upper grip
(3) and lower chuck (4), described upper grip (3) is by the top of connector (2) with wire clip body (1)
Portion is fixing to be connected, and described upper grip (3) is provided with binding post (22), on described binding post (22)
Connect have wire (23), described lower chuck (4) be positioned at upper grip (3) downside and with connector (2)
Being slidably connected, the bottom of described lower chuck (4) also sets up vertical bearing pin (5), described wire clip body (1)
Being provided with the through hole (6) adapted with bearing pin (5), described bearing pin (5) is away from one end of lower chuck (4)
Passing through hole (6) outside and be provided with link (7), described link (7) is flexibly connected with bearing pin (5), institute
Stating and be arranged with spring (8) on bearing pin (5), the bottom of described through hole (6) is provided with and adapts with spring (8)
The first block (9), described bearing pin (5) is provided with the second block (10) adapted with spring (8),
And second block (10) be positioned at the upside of the first block (9), the two ends of described spring (8) are respectively with
One block (9) and the fixing connection of the second block (10)；Described operation supporting part includes insulating support rod (11),
Described insulating support rod (11) is provided with insulating bar (12) parallel with it, described insulating bar (12)
Being slidably connected with insulating support rod (11), described insulating bar (12) is provided with insulation parallel with it
Drag hook bar (13), described insulation drag hook bar (13) is slidably connected with insulating bar (12), described insulation
The top of drag hook bar (13) is provided with the drag hook (14) adapted with link (7), described insulating support rod (11)
Upper end edge vertical centrosymmetry sector gear (15), described sector gear (15) and insulating support rod are set
(11) being rotationally connected, the top of described insulating bar (12) is provided with and adapts with sector gear (15)
Two-way tooth bar (16), described sector gear (15) is additionally provided with the folder adapted with wire clip body (1)
Arm (17).
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
State upper grip (3) and be provided with, near the one side of lower chuck (4), the first arc surface (18) upwards caved in.
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
The one side stating the close upper grip (3) of lower chuck (4) is provided with second arc surface (19) of concave downward.
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
State jig arm (17) and be provided with the groove (20) adapted with wire clip body (1).
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 4, is characterized in that: institute
State the inner surface of groove (20) or/and the outer surface of wire clip body (1) is provided with skid resistant course (21).
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
State insulating support rod (11), insulating bar (12), the drag hook bar (13) that insulate is expansion link.
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
State insulating bar (12) and be provided with limited post (24), described limited post (24) and insulating bar (12)
Hinged, described insulating support rod (11) is provided with the limited block (25) adapted with limited post (24), when
During jig arm (17) clamping wire clip body (1), described limited post (24) snaps in the spacing of limited block (25)
In groove (26).
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
State insulating support rod (11) and be provided with the first chute (27) adapted with insulating bar (12), described
Insulating bar (12) 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).
A kind of high-voltage grounding wire being easily installed dismounting the most according to claim 1, is characterized in that: institute
State insulating bar (12) and be provided with the second chute (28) adapted with the drag hook bar (13) that insulate, described
Insulation drag hook bar (13) 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).
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 true CN105846181A (en) | 2016-08-10 |
| CN105846181B CN105846181B (en) | 2018-03-27 |
Family
ID=56583110
Family Applications (1)
| 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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| CN (1) | CN105846181B (en) |
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| CN106877236A (en) * | 2017-03-14 | 2017-06-20 | 刘义 | Fast and reliable safety-type grounding wire clamp apparatus |
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| CN108011203A (en) * | 2017-11-01 | 2018-05-08 | 王亚苹 | A kind of retractable line part of high-voltage line separated time road |
| CN110544839A (en) * | 2019-10-12 | 2019-12-06 | 国网山东省电力公司利津县供电公司 | Anti-drop earth connection |
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