CN207651936U - A kind of insulation puncture line clamping clamping device and fast fixing tool - Google Patents
A kind of insulation puncture line clamping clamping device and fast fixing tool Download PDFInfo
- Publication number
- CN207651936U CN207651936U CN201820052433.5U CN201820052433U CN207651936U CN 207651936 U CN207651936 U CN 207651936U CN 201820052433 U CN201820052433 U CN 201820052433U CN 207651936 U CN207651936 U CN 207651936U
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- clamping
- puncture line
- insulation puncture
- clamping device
- guide block
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- 238000009413 insulation Methods 0.000 title claims abstract description 83
- 238000009434 installation Methods 0.000 claims abstract description 32
- 238000007667 floating Methods 0.000 claims abstract description 29
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 210000003746 feather Anatomy 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000009527 percussion Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Electric Cable Installation (AREA)
Abstract
The utility model discloses a kind of insulation puncture line clamping clamping device and fast fixing tools, the clamping device includes installation pedestal, first fixed guide blocks and the second fixed guide blocks, the the first movable guide block installed in the first fixed guide blocks, and the second movable guide block installed in the second fixed guide blocks, wherein, it is respectively equipped with feather key on first movable guide block and the second movable guide block, wherein, vertical slot is arranged at left and right sides of the fixed seat of the insulation puncture line clamping, the insulation puncture line clamping vertical slot of its fixed seat both sides and corresponding feather key grafting when mounted, and insulation puncture line clamping being capable of elastic floating relative to drive sleeve.The fast fixing tool of the utility model is suitable for electrification and starts to exchange fire work, can easily and reliably complete wire clamp clamping, wire clamp exits, three kinds of functions of emergent unlock, and the clipping operation of insulation puncture line clamping is simple, reliable.
Description
Technical field
The utility model is related to field of electricity construction more particularly to insulation puncture line clamping clamping device and Fast Installation works
Tool.
Background technology
With socio-economic development, requirement of the power consumer to power supply reliability is higher and higher, and especially 10kV is aerial to be matched
It is more and more common to charge operation of starting to exchange fire for the maintenance and transformation of electric line.
It is that uncharged lead is connected on the main traverse line of electrification to charge operation of starting to exchange fire, and the two is connected by gold utensil, absolutely
Edge penetrating cable clamp is the common gold utensil of one of which, and relevant standard has：《Rated voltage 10KV and following insulating puncturing line》
(DL/T 1190-2012)、《Distribution line live working fire protection technology》(GB/T 18857-2008).
Chinese patent literature CN206098794U discloses a kind of fast fixing tool of insulation puncture line clamping, such as Fig. 1 institutes
Show, which includes clamping device, is set between two flex holders, including the fixation being set in installation pedestal 11 '
Clamping plate 12 ', ambulatory splint 13 ', connecting rod 14 ', spanner 15 ' and spanner locking device 16 ', wherein strap and ambulatory splint
Interaction, for clamping penetrating cable clamp, one end of connecting rod and ambulatory splint are hinged, and the shaft of the other end and spanner is hinged, pulls
One end of hand is hinged with strap.
When work, spanner 15 ' is pulled upwards, spanner drives ambulatory splint 13 ' to rotate by connecting rod, when spanner turns to lock
When tight working position, spanner is in same straight line position with strap, spanner and connecting rod and the revolute pair of connecting rod and ambulatory splint
It sets, clamping device is in clamped condition, meanwhile, during spanner moves upwards, the spanner lock tongue of spanner locking device 16 ' will
Spanner is locked.
It is found during the use of above-mentioned fast fixing tool：Operating personnel is clamped to quickly by insulation puncture line clamping
When in installation tool, it is difficult to be closely packed together wire clamp and double bolts, it is also difficult to which the nut of double bolts is fully recessed into driving
In double sleeves of double bolts.During fastening insulation puncture line clamping, under the action of screwing force, double bolts can be past separate
It moves in the direction of sleeve, it is easy to cause double bolts to be detached from double sleeves of double bolts are driven, cause to complete to fasten, make
Fail at livewire work.
Therefore, it is necessary to which the clamping device to fast fixing tool is improved.
Utility model content
The purpose of this utility model is to provide a kind of clamping device of insulation puncture line clamping, with solve fixed torque bolt with
The problem of drive sleeve is easily separated from.
The purpose of this utility model, which also resides in, provides a kind of fast fixing tool using the clamping device.
For this purpose, on the one hand the utility model provides a kind of insulation puncture line clamping clamping device, the insulation puncture line clamping
Fixed seat at left and right sides of be arranged with vertical slot, the clamping device includes installation pedestal, in the installation pedestal
The first fixed guide blocks and the second fixed guide blocks of fixed setting, the first movable guide block installed in first fixed guide blocks,
And the second movable guide block installed in second fixed guide blocks, wherein the described first movable guide block and the second activity are led
Block is located at the left and right sides of the fixed part of the insulation puncture line clamping, distinguishes on the described first movable guide block and the second movable guide block
Equipped with feather key, the insulation puncture line clamping vertical slot of its fixed seat both sides and corresponding feather key grafting when mounted,
And the fixed torque bolt of the insulation puncture line clamping being capable of elastic floating relative to drive sleeve.
Further, it is respectively equipped with elastic floating mechanism in above-mentioned first fixed guide blocks and the second fixed guide blocks.
Further, elastic floating mechanism described above includes a pair of of elastic floating component, and each elastic floating component includes
Guide post and the resetting spring being set in the guide post.
Further, it is additionally provided with accessory holder in above-mentioned installation pedestal, for installing U-shaped flex holder.
Further, above-mentioned insulation puncture line clamping clamping device further includes emergent unlocking mechanism.
Further, above-mentioned emergent unlocking mechanism includes the first swing arm, the second swing arm and connection the first swing arm and second
The draw ring of swing arm, wherein the first segment of second swing arm is articulated in the second fixed guide blocks, second end is equipped with the second driving portion,
Second driving portion is accommodated in second fixed guide blocks and drives the described second movable guide block Forward when swinging.
Another aspect according to the present utility model provides a kind of fast fixing tool of insulation puncture line clamping, including exhausted
Edge bar, the clamping device being arranged at the top of insulating bar, two parallel U-shaped hanging wires being arranged in the installation pedestal of clamping device
Frame and wire locking device and be arranged in installation pedestal for driving the double fixed torque bolts of insulation puncture line clamping to beat
Device is hit, the clamping device is according to insulation puncture line clamping clamping device described above.
The fast fixing tool of the utility model is suitable for charging work of starting to exchange fire.Existing insulation has been transformed in the utility model
Penetrating cable clamp contour structures, and devise mating clamping device.Wire clamp clamping can easily and reliably be completed, wire clamp is exited, answered
Three actions of anxious unlock.Clamped design according to the present utility model, simple to the clamping of insulation puncture line clamping, reliable, operation people
When member's placement wire clamp, correct position is ensured by clamping device and wire clamp, and insulation puncture line clamping fastens in piercing process, protects always
Hold the reliable contacts of double bolts and sleeve.After the completion of insulation puncture line clamping fastening punctures, wire clamp is detached from sleeve, and installation tool is past
Under the unlock of insulation puncture line clamping and clamping device can be completed, it is not necessary that wire clamp unlocking mechanism is arranged on insulating bar.
Other than objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to figure, the utility model is described in further detail.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the fast fixing tool of the insulation puncture line clamping of the prior art；
Fig. 2 is the structural schematic diagram one of the clamping device of insulation puncture line clamping according to the present utility model；
Fig. 3 is the structural schematic diagram two of the clamping device of insulation puncture line clamping according to the present utility model；
Fig. 4 is schematic diagram of the insulation puncture line clamping clamping device according to the present utility model when installing insulation puncture line clamping
One；
Fig. 5 is schematic diagram of the insulation puncture line clamping clamping device according to the present utility model when installing insulation puncture line clamping
Two；
Fig. 6 is schematic diagram of the insulation puncture line clamping clamping device according to the present utility model when installing insulation puncture line clamping
Three；
Fig. 7 is vertical view of the insulation puncture line clamping clamping device according to the present utility model when installing insulation puncture line clamping
Figure；And
Fig. 8 is the three-dimensional structure diagram of insulation puncture line clamping according to the present utility model.
Reference sign
10, installation pedestal；11, accessory holder；
20, the first connecting element；30, the second connecting element；
40, emergent unlocking mechanism；50, drive sleeve；
60, insulating bar connector；70, insulation puncture line clamping；
21, the first fixed guide blocks；22, the first movable guide block；
31, the second fixed guide blocks；32, the second movable guide block；
221, feather key；321, feather key
23/24 a pair of of elastic floating component；33/34 a pair of of elastic floating component；
231, guide post；232, elastic reset member；
331, guide post；332, elastic reset member；
41, articulated section；
42, the second swing arm；43, driving portion；
44, groove；45, draw ring；
71/72, vertical slot；73, a pair of of fixed torque bolt；
74, sliding seat；75, fixed seat.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 2 to Fig. 8 shows some embodiments according to the present utility model.
As shown in Figures 2 and 3, the insulation puncture line clamping clamping device of the utility model includes that installation pedestal 10, first is inserted
Connected components 20 and the second connecting element 30, wherein the first connecting element 20 includes being fixedly installed in the installation pedestal 10
First fixed guide blocks 21, first installed in first fixed guide blocks 21 22 and first elastic floating machine of movable guide block
Structure, the second connecting element 30 include the second fixed guide blocks 31 being fixedly installed in the installation pedestal 10, consolidate described second
Determine the installed on guide block 31 second 32 and second elastic floating mechanism of movable guide block.
Wherein, installation pedestal 10 is applied not only to the first connecting element of installation and the second connecting element, is additionally operable to other installations
Other component, such as connect with insulating bar 60, conducting wire locking device, percussion device, U-shaped extension installed by accessory holder 11
Coil holder etc..
Wherein, the first movable guide block 22 is arranged in the front side of the first fixed guide blocks 21, can be before the first fixed guide blocks
Elastic floating, the second movable guide block 32 are arranged in the front side of the second fixed guide blocks 31, can be fixed second in the horizontal direction for side
The front side of guide block elastic floating in the horizontal direction.
Wherein, the first movable guide block 22 is equipped with the feather key 221 extended vertically, and the second movable guide block 32 also is provided with prolonging vertically
The feather key 321 stretched, the two is facing, is used for the inserting of insulation puncture line clamping.
Wherein, the first elastic floating mechanism includes a pair of of elastic floating component 23 and 24, and the second elastic floating mechanism is also wrapped
Include a pair of of elastic floating component 33 and 34.Wherein, elastic floating component 23 includes guide post 231 and elastic reset member 232, bullet
The structure of property floatation element 24 is identical as the structure of elastic floating component 23.Wherein, the first movable guide block 24 and a pair of of elasticity are floating
Motivation structure 23 is fixedly connected with 24 guide post one end, which is slidably supported in the first fixed guide blocks, should
Elastic reset member 232 is preferably the resetting spring being set in guide post, and the first movable guide block 22 is made to have compression first solid
Determine the movement tendency of guide block 21.
Elastic floating component 33 includes guide post 331 and elastic biasing member 332, and elastic floating component 23 includes guide post
231 and elastic reset member 232, the second elastic floating mechanism it is structurally and functionally identical as the first elastic floating mechanism.
The clamping object of this clamping device is insulation puncture line clamping 70, and the structure of the insulation puncture line clamping is shown in FIG. 8,
As shown in Figure 8 comprising fixed seat 75, sliding seat 74, a pair of of fixed torque bolt 73, wherein fixed seat and sliding seat are between the two
With mutually matched multiple puncture component (not shown)s, the insulating layer for piercing through conducting wire, a pair of of fixed torque bolt 73 exists
Sliding seat 74 is moved and tensed to fixed seat 75 under the action of external drive sleeve 50, forces and is clamped in multiple puncture components
The insulating layer of conducting wire is pierced.
As an improvement, the left and right sides of fixed seat 75 is opened up vertical slot 71 and 72 by the utility model respectively, a pair
The feather key 221 and 321 of 71 and 72 and first movable guide block of vertical slot and the second movable guide block coordinates grafting, so insulation to wear
Thorn wire clamp can move up and down in the vertical direction.
Fig. 4 and Fig. 7 shows insulation puncture line clamping installation condition on clamping device, specifically, in insulation puncture line clamping
When installation, first insulation puncture line clamping 70 is inserted into from up to down on 22 and second movable guide block 32 of the first movable guide block, then
It is pulled outwardly insulation puncture line clamping so that 70 outside elastic floating of insulation puncture line clamping.
Height and position of the insulation puncture line clamping on 22 and second movable guide block 32 of the first movable guide block is adjusted simultaneously so that
A pair of of fixed torque bolt is aligned with drive sleeve on height and position, then unclamps insulation puncture line clamping, then insulation puncture line clamping
Elastic reset, head and the drive sleeve of a pair of of fixed torque bolt be combined with each other, and so far insulation puncture line clamping is on clamping device
Installation process be completed, the state after installation is as shown in figure 5, at this point, a pair of of fixed torque bolt is socketed with a pair of of drive sleeve
Together, it can rotate synchronously.
After insulation puncture line clamping installation, uncharged conducting wire is placed in folder hole of the position of insulation puncture line clamping under
In, the position of insulation puncture line clamping is first vacant in upper folder hole.
Then include clamping device fast fixing tool position on lift so that the main traverse line of electrification, which is located at, to be fallen into insulation and wears
The position of wire clamp is pierced in upper folder hole, then a pair of of drive sleeve 50 is turned by the percussion device driving in installation pedestal
Dynamic, until when reaching the nominal torque of fixed torque bolt, head and the bar portion of fixed torque bolt disconnect, insulation puncture line clamping 70
Sliding seat 74 is fixed seat 75, then pulls down fast fixing tool, then insulation puncture line clamping can be disengaged from clamping device
Inserting relationship, insulation puncture line clamping are retained on the main traverse line of electrification.
Compared with prior art, the operation of the insulation puncture line clamping of the utility model during the installation process significantly simplifies, can
It is promoted by property, fixed torque bolt is reliable, quick with drive sleeve alignment between the two, and electrification is started to exchange fire after operation, Fast Installation
The disengaging of tool and insulation puncture line clamping is reliable, swift to operate, it is not necessary that wire clamp unlocking mechanism is arranged on insulating bar.
The utility model additionally provides a kind of emergent unlocking mechanism, for can not be taken off with drive sleeve in insulation puncture line clamping
Head from such as fixed torque bolt is broken the knot for forcing to disengage the head and drive sleeve of fixed torque bolt when failure with cadre
It closes.
As shown in Figure 6 and Figure 7, the emergent unlocking mechanism 40 include the first swing arm (not shown), the second swing arm 42, with
And the draw ring 45 of connection the first swing arm and the second swing arm 42, wherein the first end of second swing arm 42 is articulated section 41, pivot
It is connected in the second fixed guide blocks 31；The second end of second swing arm 42 is equipped with driving portion 43, and first driving portion 43 is accommodated in institute
State in the groove 44 of the second fixed guide blocks and the described first movable guide block 22 driven to move forward when swinging, first swing arm with
Second swing arm is symmetrical arranged.
When needing the inserting relationship of emergency release insulation puncture line clamping and clamping device to disconnect drive sleeve and determine torque
When the combination of bolt, draw ring 45 is pulled, as shown in fig. 6, the driving portion in the first swing arm and the second swing arm makes the first movable guide block
Float forward with the second movable guide block, to make the head of fixed torque bolt be detached from drive sleeve, the such first movable guide block and
Second movable guide block can the sliding of opposing insulation penetrating cable clamp, the inserting relationship both released, and then realize emergent unlock.
The utility model additionally provides a kind of fast fixing tool of insulation puncture line clamping, includes not only described above
Insulation puncture line clamping clamping device, the two parallel U-shapeds extensions for further including insulating bar, being arranged in the installation pedestal of clamping device
Coil holder and wire locking device and the double fixed torque bolts for driving insulation puncture line clamping being arranged in installation pedestal
Percussion device, wherein drive sleeve is fixedly mounted on percussion device, and the position in installation pedestal is fixed.
Wherein, percussion device, U-shaped flex holder, wire locking device etc. can use on traditional fast fixing tool
Corresponding component, the constructions of these components and purposes Chinese patent literature CN106299730A, CN206098794U,
There is associated description in CN206076509U, CN106785498A, CN106684665A, CN107046251A, CN106299765A.
The fast fixing tool of the utility model is suitable for charging work of starting to exchange fire.Existing insulation has been transformed in the utility model
Penetrating cable clamp contour structures, and devise mating clamping device.Wire clamp clamping can easily and reliably be completed, wire clamp is exited, answered
Three actions of anxious unlock.Clamped design according to the present utility model, simple to the clamping of insulation puncture line clamping, reliable, operation people
When member's placement wire clamp, correct position is ensured by clamping device and wire clamp, and insulation puncture line clamping fastens in piercing process, protects always
Hold the reliable contacts of double bolts and sleeve.After the completion of insulation puncture line clamping fastening, wire clamp is detached from sleeve, and installation tool is down
The unlock of insulation puncture line clamping and clamping device can be completed, it is not necessary that wire clamp unlocking mechanism is arranged on insulating bar.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of insulation puncture line clamping clamping device, which is characterized in that the left and right sides of the fixed seat of the insulation puncture line clamping
It is arranged with vertical slot, the first fixation that the clamping device includes installation pedestal, is fixedly installed in the installation pedestal
It guide block and the second fixed guide blocks, the movable guide block of first installed in first fixed guide blocks and is fixed described second
The the second movable guide block installed on guide block, wherein the described first movable guide block and the second movable guide block are located at the insulating puncturing
It is respectively equipped with feather key on the left and right sides of the fixed part of wire clamp, the described first movable guide block and the second movable guide block, it is described exhausted
Edge the penetrating cable clamp vertical slot of its fixed seat both sides and corresponding feather key grafting, and the insulating puncturing line when mounted
Folder being capable of elastic floating relative to drive sleeve.
2. insulation puncture line clamping clamping device according to claim 1, which is characterized in that first fixed guide blocks and
Elastic floating mechanism is respectively equipped in two fixed guide blocks.
3. insulation puncture line clamping clamping device according to claim 1, which is characterized in that the elastic floating mechanism includes
A pair of of elastic floating component, each elastic floating component include guide post and the resetting spring that is set in the guide post.
4. insulation puncture line clamping clamping device according to claim 1, which is characterized in that be additionally provided in the installation pedestal
Accessory holder, for installing U-shaped flex holder.
5. insulation puncture line clamping clamping device according to claim 1, which is characterized in that further include emergent unlocking mechanism.
6. insulation puncture line clamping clamping device according to claim 5, which is characterized in that the emergent unlocking mechanism includes
First swing arm, the second swing arm and the draw ring for connecting the first swing arm and the second swing arm, wherein the first segment pivot of second swing arm
Be connected in the second fixed guide blocks, second end is equipped with the second driving portion, second driving portion is accommodated in second fixed guide blocks
Above and when swinging drive the described second movable guide block Forward.
7. a kind of fast fixing tool of insulation puncture line clamping, including insulating bar, be arranged at the top of insulating bar clamping device,
Two parallel U-shaped flex holders and wire locking device being arranged in the installation pedestal of clamping device and setting are in installation base
The percussion device of double fixed torque bolts for driving insulation puncture line clamping on seat, which is characterized in that the clamping device is
Insulation puncture line clamping clamping device according to any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052433.5U CN207651936U (en) | 2018-01-12 | 2018-01-12 | A kind of insulation puncture line clamping clamping device and fast fixing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820052433.5U CN207651936U (en) | 2018-01-12 | 2018-01-12 | A kind of insulation puncture line clamping clamping device and fast fixing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207651936U true CN207651936U (en) | 2018-07-24 |
Family
ID=62876288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820052433.5U Active CN207651936U (en) | 2018-01-12 | 2018-01-12 | A kind of insulation puncture line clamping clamping device and fast fixing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207651936U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155602A (en) * | 2018-01-12 | 2018-06-12 | 国家电网有限公司 | A kind of insulation puncture line clamping clamping device and fast fixing tool |
| CN109038159A (en) * | 2018-08-03 | 2018-12-18 | 国家电网有限公司 | A kind of 10kV electrification mounting device for earthing clamp |
| CN112165030A (en) * | 2020-10-29 | 2021-01-01 | 国网河北省电力有限公司沧州供电分公司 | Vertical arrangement type double-suspension vertical wire clamp temporary protection device and pin supplementing pretreatment method |
-
2018
- 2018-01-12 CN CN201820052433.5U patent/CN207651936U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155602A (en) * | 2018-01-12 | 2018-06-12 | 国家电网有限公司 | A kind of insulation puncture line clamping clamping device and fast fixing tool |
| CN108155602B (en) * | 2018-01-12 | 2024-02-23 | 国家电网有限公司 | Insulating puncture clamp clamping device and quick mounting tool |
| CN109038159A (en) * | 2018-08-03 | 2018-12-18 | 国家电网有限公司 | A kind of 10kV electrification mounting device for earthing clamp |
| CN109038159B (en) * | 2018-08-03 | 2023-11-28 | 国家电网有限公司 | 10kV live installation device for grounding wire clamp |
| CN112165030A (en) * | 2020-10-29 | 2021-01-01 | 国网河北省电力有限公司沧州供电分公司 | Vertical arrangement type double-suspension vertical wire clamp temporary protection device and pin supplementing pretreatment method |
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