CN109921330B - Insulating lap joint rod for intermediate potential operation - Google Patents
Insulating lap joint rod for intermediate potential operation Download PDFInfo
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- CN109921330B CN109921330B CN201811613822.1A CN201811613822A CN109921330B CN 109921330 B CN109921330 B CN 109921330B CN 201811613822 A CN201811613822 A CN 201811613822A CN 109921330 B CN109921330 B CN 109921330B
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- elbow
- main line
- rod
- insulating
- placing groove
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- 229920001971 elastomer Polymers 0.000 claims description 37
- -1 polyethylene Polymers 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 4
- 239000010436 fluorite Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 52
- 230000005611 electricity Effects 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 16
- 230000009471 action Effects 0.000 description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The invention relates to the technical field of power transmission and maintenance, and provides an insulating lap joint rod for facilitating stable, safe and convenient power taking and grounding of outdoor electric equipment from a power transmission main line. The insulating lap joint rod is simple in structure, can stably conduct current from a power transmission main line to get electricity and ground the power transmission main line, can avoid close-distance operation and high-altitude operation from the power transmission line, and is convenient and safe to use.
Description
Technical Field
The invention relates to the technical field of power transmission and maintenance, in particular to an insulating lap joint rod for intermediate potential operation.
Background
Outdoor power operation construction, for example, in the processes of overhauling and installing a power transmission line, a power transmission main line is often required to be lapped with wires and then drained to the ground so as to meet the requirements of grounding of the power transmission main line or temporary use of electric equipment and the like; however, the existing lap joint of the power transmission main line and the outdoor wire usually needs high-altitude operation, and the process is complex, time-consuming, low in safety and unstable in power transmission performance.
Chinese patent CN201711228490.0, application date 2017, 11.29, the patent name a power line overhauls ground connection overlap joint pole, the overlap joint pole including overlap joint and action bars is disclosed, establish hook portion and kicking block on the overlap joint, hook portion lower free end fixed connection is on the support of right angle shape, kicking block fixed connection is to the lead screw tip, the lead screw rotatably is connected to driven bevel gear through spiral portion, driven bevel gear rotatably is connected to one side board of support through driven pivot, rotationally be connected with the initiative bevel gear with driven bevel gear engaged with through the initiative pivot on another side board of support, the initiative pivot stretches out to be connected to on the action bars, the lead screw is rotatory can to lean on the kicking block to hook portion inboard. The lap joint is driven to rotate by 90 degrees through a bevel gear transmission mechanism, so that the lap joint is reliably lapped on the power transmission line. But this overlap joint pole is unsuitable for the drainage effect of transmission of electricity mainline, and this overlap joint pole structure is comparatively complicated moreover, and the operation is inconvenient, needs the manual work closely to connect the lap joint to the transmission of electricity line, brings outdoor high altitude construction risk, and the security is low, and transmission of electricity stability can not be high.
Disclosure of Invention
The invention provides an insulating lap joint rod for middle potential operation, which is convenient for outdoor electric equipment to stably, safely and conveniently get electricity and ground from a power transmission main line, has simple structure, can realize stable drainage electricity getting from the power transmission main line and grounding of the power transmission main line, can avoid short-distance operation and high-altitude operation from the power transmission line, and is convenient and safe to use.
The invention provides the following technical scheme:
the utility model provides an insulating overlap joint pole for middle potential operation, includes insulating hand pole and the installation pole that can electrically conduct, the one end of installation pole is connected with the top of insulating hand pole, and the other end of installation pole is equipped with the electrically conductive elbow that can draw and collude the thread, is equipped with the thread standing groove on the incurve curved surface of electrically conductive elbow, still is equipped with a pair of lead wire elbow pair that can electrically conduct on the installation pole, including the decurrent last elbow of turn, the ascending lower elbow of turn, the elbow can upwards pivoted connect on the installation pole down, and when the elbow upwards rotated down, the turn of lower elbow forms the lead wire fixed orifices that can embrace the lead wire with the turn of last elbow butt joint.
When the insulating lap joint rod is used, a lead can be placed at the bent opening of the lower elbow, then the lower elbow is rotated upwards, the bent opening of the lower elbow is butted with the bent opening of the upper elbow to form a lead fixing hole capable of encircling the lead, the lead is fixed in the lead fixing hole, then the insulating hand rod is operated, the conductive elbow is hooked to the power transmission main line, the power transmission main line is sunk into the main line placing groove through the adjusting position, and therefore current on the power transmission main line can be sequentially guided to the lead through the conductive elbow, the mounting rod and the lead bent pair and then is connected to a device to be used or grounded. In arranging the main line standing groove with the transmission of electricity mainline like this, convenient operation, stability is high, and the security is high, and avoids closely and high altitude construction to the transmission of electricity mainline, and the security is high.
Preferably, the installation rod is further provided with a conductive rotating rod, the lower elbow is arranged at one end of the rotating rod, the other end of the rotating rod is provided with an insulating rope, and the lower elbow is driven to rotate upwards when the insulating rope is pulled. The lower elbow is upwards rotated and then is butted with the upper elbow by tensioning the insulating rope, so that the insulating lapping rod is further convenient to drain or ground a power transmission main line under the condition of avoiding manual high-altitude close-range operation.
Preferably, a counterweight insulating block is arranged at one end of the rotating rod connected with the lower elbow. After the operation is finished, the insulating rope is loosened, the lower elbow is driven to rotate downwards under the falling action of the mating insulating block to be separated from the upper elbow, the lead is released, and then the insulating hand lever is operated to separate the power transmission main line from the main line placing groove.
Preferably, the main line placing groove is internally provided with a necking through cavity, the width of two side surfaces of the necking through cavity is smaller than that of the opening and the bottom of the main line placing groove, and the opening and the bottom of the main line placing groove are connected through the necking through cavity. Therefore, the power transmission main line enters the bottom of the main line placing groove from the opening of the main line placing groove through the necking through cavity, the power transmission main line is not easy to be separated from the conductive elbow in the operation process due to strong wind or artificial misoperation of the insulating hand lever, and the operation stability is improved.
Preferably, the main line placing groove is further provided with a first rubber baffle and a second rubber baffle respectively, and the first rubber baffle and the second rubber baffle are arranged on two side surfaces of the necking through cavity in a vertically staggered mode. When the power transmission main line is sunk into the main line placing groove, the power transmission main line is firstly placed at the opening of the main line placing groove, then the insulating hand lever is pulled down, the opposite end parts of the first rubber baffle and the second rubber baffle are enabled to upwarp, the power transmission main line smoothly enters the bottom of the main line placing groove, the difficulty of dropping the power transmission main line from the main line placing groove is increased, the operation stability is enhanced, after the operation is finished, the power transmission main line can be taken out from the staggered gap of the first rubber baffle and the second rubber baffle by moving the insulating hand lever, or the insulating hand lever is directly lifted, the first rubber baffle and the second rubber baffle are folded downwards, and the power transmission main line is released.
As a preferable aspect of the present invention, the first rubber fence and the second rubber fence are arranged obliquely upward. Therefore, the power transmission main line can enter the main line placing groove more easily and is not easy to fall out.
Preferably, the first rubber baffle and the second rubber baffle are smooth convex surfaces on the outer side surface of the opening of the main line placing groove. When the insulating hand lever is pulled down to place the power transmission main line into the main line placing groove, the outer side surfaces, opposite to the openings, of the first rubber baffle and the second rubber baffle are smooth convex arched surfaces, so that the power transmission main line can smoothly enter the main line placing groove along the convex arched surfaces of the first rubber baffle and the second rubber baffle, on one hand, the operation is more convenient and easier, on the other hand, the friction and the collision between the first rubber baffle and the power transmission main line and the second rubber baffle and the power transmission main line can be reduced, and the external force applied to the power transmission main line is reduced.
Preferably, the inner side of the conductive elbow is provided with two arc-shaped outward-protruding sliding surfaces, and the outward-protruding sliding surfaces extend from two ends of the bent opening of the conductive elbow to the main line placing groove respectively and are in smooth transition connection with two sides of the opening of the main line placing groove respectively. Therefore, the power transmission main line can be clamped into the main line placing groove along the outer convex sliding surface in a smooth mode, the operation convenience is improved, and the external force pulling on the power transmission main line is reduced.
Preferably, the insulating hand lever is further sleeved with an insulating rope fastener capable of tying an insulating rope.
Preferably, the surface of the insulated handspike is further provided with an insulated coating, and the insulated coating comprises the following components in percentage by mass: 75% of phenolic resin, 7% of methyl triethoxysilane, 10% of fluorite powder, 1% of silane coupling agent, 1% of polyethylene wax, 1% of dilaurate ester and 5% of polysiloxane. Methyl triethoxysilane and polysiloxane form a silane cross-linked network interpenetrating with phenolic resin under the action of dilaurate, the phenolic resin is cross-linked and cured under the action of methyl triethoxysilane, fluorite powder is dispersed in the cross-linked network and connected through hydrogen bonds formed by fluorine, and an insulating coating with the thickness of 50 microns is formed after the surface of the insulating hand lever is coated, so that the insulating hand lever has strong insulating, corrosion-resistant and wear-resistant properties, can be kept to be safely used for a long time, and can resist 100KV alternating-current voltage.
The invention has the following beneficial effects:
the insulating lap joint rod can conveniently connect a power transmission main line into electric equipment or be grounded, the power transmission main line is arranged in the main line placing groove, the stability of the drainage process is high, the high-altitude and short-distance action with the power transmission main line can be avoided, the safety performance is high, the structure is simple, the operation is easy, and the insulating lap joint rod can be used for circuit maintenance operation and the like.
Drawings
Fig. 1 is a schematic structural diagram of an insulating lap joint bar of the present invention.
Fig. 2 is a schematic diagram of a structure of a conductive bend.
Figure 3 is another schematic diagram of the conductive bend.
Fig. 4 is a schematic structural view of the first rubber stopper.
Fig. 5 is a schematic view of the structure of the mounting rod.
In the figure, 1, an insulating hand rod, 2, an installation rod, 21, a raised head, 22, an upper through hole, 23, a lower through hole, 3, a conductive elbow, 31, a main line placing groove, 311, a necking through cavity, 32, a first rubber baffle, 321, an outer convex arch surface, 33, a second rubber baffle, 34, an outer convex sliding surface, 41, an upper elbow, 42, a lower elbow, 51, a rotating rod, 52, a fixing rod, 6, an insulating rope, 7, a counterweight insulating block, 8 and an insulating rope buckle.
Detailed Description
The following further describes the embodiments of the present invention.
The starting materials used in the present invention are commercially available or commonly used in the art, unless otherwise specified, and the methods in the following examples are conventional in the art, unless otherwise specified.
As shown in fig. 1, an insulating overlapping rod for middle potential operation comprises an insulating hand rod 1 and a conductive mounting rod 2, wherein one end of the mounting rod is connected with the top end of the insulating hand rod, the other end of the mounting rod is provided with a conductive elbow 3 capable of hooking a main line, a main line placing groove 31 is arranged on an inner curved surface of the conductive elbow, the cross section of the conductive elbow is rectangular, and the main line placing groove extends along the thickness direction of the conductive elbow. The installation rod is also provided with a pair of conductive lead elbow pairs, the pair of conductive lead elbow pairs comprises an upper elbow 41 with a downward elbow and a lower elbow 42 with an upward elbow, the lower elbow can be connected to the installation rod in an upward rotating manner, and when the lower elbow rotates upward, the elbow of the lower elbow is in butt joint with the elbow of the upper elbow to form a lead fixing hole capable of holding the lead.
As shown in fig. 5, a raised head 21 is arranged at one end of the mounting rod connected with the conductive elbow, an inner bolt through hole is arranged on the raised head, a clamping groove capable of clamping the raised head is arranged at the end part of the conductive elbow, outer bolt through holes are arranged at two sides of the clamping groove, and the conductive elbow is connected with the mounting rod through the cooperation of a bolt and a nut which sequentially penetrate through the outer bolt through hole and the inner bolt through hole. Be equipped with perpendicular installation pole length direction's last through-hole 22 and lower through-hole 23 on the installation pole, go up the through-hole both sides and be equipped with the bolt hole, the through-hole both sides are equipped with the bolt hole down, still are equipped with electrically conductive dwang 51 and dead lever 52 on the installation pole, are equipped with connect the through-hole on dead lever and the dwang respectively, and the dead lever passes the bolt that passes the bolt hole after the through-hole and can dismantle with the installation pole and be connected, and the dwang passes down the through-hole after the distribution shaft passes the bolt hole and rotate with. But be equipped with the last draw-in groove of joint dead lever on the outer curved surface of last elbow, go up the elbow and be connected the after-fixing in the one end of dead lever through the bolt that passes draw-in groove and dead lever and nut cooperation, be equipped with the lower draw-in groove of joint dwang on the outer curved surface of lower elbow, the one end at the dwang is fixed after the bolt that passes draw-in groove and dwang and nut cooperation are connected to lower elbow, be equipped with insulating rope 6 at the other end of dwang, when taut insulating rope, the one end of elbow upwards rotates under the dwang connection, the curved mouthful of elbow and the curved mouthful butt joint of last elbow under the drive, the realization elbow can upwards be rotated and be connected with the erection rod. The end part of the rotating rod connected with the lower elbow is also provided with a counterweight insulating block 7, and when an insulating rope is loosened, the rotating rod rotates downwards under the action of the counterweight insulating block to separate the lower elbow from the upper elbow. In this embodiment, the material of conducting bend, installation pole, dwang, dead lever and lead wire elbow pair is aluminium, and electric conductive property is good on the one hand, and on the other hand quality is light, conveniently carries.
As shown in fig. 2, the bottom of the main line placing groove is in a semi-circular arc shape. In order to enable the power transmission main line to be firmly placed in the main line placing groove and not to be separated from the main line placing groove easily under the condition of strong wind or artificial accidental touch on the insulating hand rod, a necking through cavity 311 is arranged in the main line placing groove, the width of two side surfaces of the necking through cavity is reduced relative to the opening and the bottom of the main line placing groove, and the opening and the bottom of the main line placing groove are connected through the necking through cavity; further, a first rubber baffle 32 and a second rubber baffle 33 are respectively arranged in the main line placing groove, the first rubber baffle and the second rubber baffle are arranged on two side faces of the necking through cavity in a vertically staggered mode and are arranged in the inclined direction, and projection parts of the end parts extending out in the opposite direction in the vertical direction are overlapped. In order to facilitate the main power transmission line to enter the main line placing groove, two arc-shaped convex sliding surfaces 34 are arranged on the inner side of the conductive elbow, extend to the main line placing groove from two ends of a bent opening of the conductive elbow respectively, and are in smooth transition connection with two sides of an opening of the main line placing groove respectively; further, as shown in fig. 4, the outer side surfaces of the first rubber baffle and the second rubber baffle with respect to the opening of the main line placing groove are smooth convex arcuate surfaces 321. In order to improve the operation stability, an insulating rope buckle 8 capable of tying an insulating rope is further arranged on the insulating hand rod, and in order to improve the safety of insulating operation, an insulating coating is further coated on the insulating hand rod and consists of the following components in percentage by mass: 75% of phenolic resin, 7% of methyl triethoxysilane, 10% of fluorite powder, 1% of silane coupling agent, 1% of polyethylene wax, 1% of dilaurate ester and 5% of polysiloxane
In yet another implementation manner of the main line placing groove of the present invention, as shown in fig. 3, the bottom of the main line placing groove is in an elliptical arc shape, the arc length is 3/4 of the ellipse where the main line placing groove is located, and the trajectory is derived from the end point of the major axis of the ellipse where the main line placing groove is located to the end point of the minor axis, so that the bottom of the main line placing groove can be arranged away from the channel of the necking through cavity and the opening of the main line placing groove, and the main line for power transmission is not easy to separate.
When the insulating overlapping rod is used, firstly, the proper length of the insulating hand rod is adjusted, then the lead is placed at the elbow of the lower elbow, the insulating rope is tensioned and tied on the insulating rope buckle, one end of the rotating rod connected with the lower elbow rotates upwards to drive the elbow of the lower elbow to be butted with the elbow of the upper elbow, so that the lead is fixed in a holding hole formed by butting the elbow of the lower elbow and the elbow of the upper elbow, then the insulating hand rod is operated, the conductive elbow is pulled to hook the power transmission main line, the power transmission main line is clamped into the main line placing groove, and the installation rod, the conductive elbow, the rotating rod, the fixed rod and the lead elbow pair can conduct electricity, so that the current on the power transmission main line can be drained to the lead through the conductive elbow, the installation rod, the rotating rod and the lead elbow pair in sequence, and then is connected to a device to be used or grounded. Treat to loosen the insulating rope after finishing using, make down the elbow break away from the elbow under the flagging effect of counter weight insulating block, release the lead wire, then the insulating handspike of operation makes conductive elbow and the main line of transmitting electricity break away from the contact, the length of the insulating handspike of contraction again, convenient operation like this, through insulating handspike operation moreover, the security is high on the one hand, and on the other hand can avoid artifical high altitude closely to operate, and insulating overlap joint pole makes things convenient for the equipment simultaneously, dismantles and deposits.
Claims (8)
1. An insulating lap joint rod for middle potential operation is characterized by comprising an insulating hand rod and a conductive mounting rod, wherein one end of the mounting rod is connected with the top end of the insulating hand rod, the other end of the mounting rod is provided with a conductive elbow capable of hooking a main line, a main line placing groove is arranged on an inner curved surface of the conductive elbow, the mounting rod is also provided with a pair of conductive lead elbow pairs comprising an upper elbow with a downward elbow opening and a lower elbow with an upward elbow opening, the lower elbow can be connected to the mounting rod in an upward rotating manner, and when the lower elbow rotates upwards, the elbow opening of the lower elbow is butted with the elbow opening of the upper elbow to form a lead fixing hole capable of holding the lead;
a necking through cavity is arranged in the main line placing groove, and the opening and the bottom of the main line placing groove are connected through the necking through cavity;
the main line placing groove is internally provided with a first rubber baffle and a second rubber baffle respectively, and the first rubber baffle and the second rubber baffle are arranged on two side surfaces of the necking through cavity in an up-down staggered manner;
the first rubber baffle and the second rubber baffle are arranged obliquely upwards, and the projection parts of the end parts extending out in opposite directions in the vertical direction are overlapped.
2. The insulated overlapping rod for middle potential operation as claimed in claim 1, wherein a conductive rotating rod is further provided on the mounting rod, the lower elbow is provided at one end of the rotating rod, and an insulating rope is provided at the other end of the rotating rod, and the lower elbow is driven to rotate upward when the insulating rope is pulled.
3. An insulated overlapping rod for middle potential operation according to claim 2, characterized in that a counterweight insulating block is further provided at the end of the rotating rod connected to the lower elbow.
4. An insulated lap joint bar for medium potential work according to claim 1, wherein the width of both side faces of the neck through cavity becomes smaller with respect to the opening and the bottom of the main line placement groove.
5. An insulated overlapping rod for middle potential operation according to claim 1 or 4, characterized in that the first rubber baffle and the second rubber baffle are smooth convex surfaces with respect to the outer side surface of the opening of the main wire placing groove.
6. The insulation lap joint rod for the intermediate potential operation as recited in claim 1 or 4, wherein the inner side of the conducting elbow is provided with two arc-shaped outer convex sliding surfaces, and the outer convex sliding surfaces respectively extend from two ends of the bent opening of the conducting elbow to the main line placing groove and are respectively connected with two sides of the opening of the main line placing groove in a smooth transition manner.
7. An insulated overlapping rod for middle potential operation as claimed in claim 1, characterized in that the insulated hand rod is further sleeved with an insulated rope fastener for tying an insulated rope.
8. The insulating lap joint rod for the intermediate potential operation of claim 1 or 7, wherein the surface of the insulating hand rod is further provided with an insulating coating, and the insulating coating comprises the following components in percentage by mass: 75% of phenolic resin, 7% of methyl triethoxysilane, 10% of fluorite powder, 1% of silane coupling agent, 1% of polyethylene wax, 1% of dilaurate ester and 5% of polysiloxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613822.1A CN109921330B (en) | 2018-12-27 | 2018-12-27 | Insulating lap joint rod for intermediate potential operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613822.1A CN109921330B (en) | 2018-12-27 | 2018-12-27 | Insulating lap joint rod for intermediate potential operation |
Publications (2)
| Publication Number | Publication Date |
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| CN109921330A CN109921330A (en) | 2019-06-21 |
| CN109921330B true CN109921330B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811613822.1A Active CN109921330B (en) | 2018-12-27 | 2018-12-27 | Insulating lap joint rod for intermediate potential operation |
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| Country | Link |
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| CN (1) | CN109921330B (en) |
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| CN208142370U (en) * | 2018-04-03 | 2018-11-23 | 云南电网有限责任公司带电作业分公司 | A kind of electrification drainage thread for insulating bar method overlapped novel wire clamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101771247B (en) * | 2008-12-30 | 2012-03-28 | 上海市南电力工程有限公司 | Tool for jointing temporary lead wire under live working on rainy day for distribution line and method thereof |
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| CN205811090U (en) * | 2016-05-25 | 2016-12-14 | 江西科技学院 | High voltage line maintenance clamps with ground connection |
| KR101850531B1 (en) * | 2016-08-01 | 2018-05-30 | 주식회사 조광전기 | By-pass cable terminal apparatus |
| CN107425297A (en) * | 2017-04-28 | 2017-12-01 | 国网浙江慈溪市供电公司 | A kind of drainage thread quick lap joint instrument for earth potential working |
| CN207116739U (en) * | 2017-07-06 | 2018-03-16 | 保定奥雄电力器材有限公司 | A kind of safety-type ground wire that is easy to carry of electric power |
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2018
- 2018-12-27 CN CN201811613822.1A patent/CN109921330B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206195235U (en) * | 2016-06-22 | 2017-05-24 | 国家电网公司 | Tail end current potential shifts stick |
| CN206657864U (en) * | 2017-04-28 | 2017-11-21 | 国网浙江慈溪市供电公司 | A kind of drainage thread quick lap joint instrument for earth potential working |
| CN107257040A (en) * | 2017-05-27 | 2017-10-17 | 国网黑龙江省电力有限公司检修公司 | Pull back swing arm short circuit earthing clamp and ground connection and method for dismounting |
| CN206922036U (en) * | 2017-06-14 | 2018-01-23 | 国网浙江省电力公司衢州供电公司 | It powered can tear the bare conductor wire clamp taken open |
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| Publication number | Publication date |
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| CN109921330A (en) | 2019-06-21 |
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