CN113381343A - Circuit maintenance method without power failure - Google Patents
Circuit maintenance method without power failure Download PDFInfo
- Publication number
- CN113381343A CN113381343A CN202110791148.1A CN202110791148A CN113381343A CN 113381343 A CN113381343 A CN 113381343A CN 202110791148 A CN202110791148 A CN 202110791148A CN 113381343 A CN113381343 A CN 113381343A
- Authority
- CN
- China
- Prior art keywords
- bolt
- head
- nut
- clamping
- fitting
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
-
- 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
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Landscapes
- Electric Cable Installation (AREA)
Abstract
The invention relates to a maintenance method of a circuit without power failure, which comprises the following steps that firstly, a temporary bypass is connected in parallel on an electric appliance to be maintained through a line maintenance tool, the temporary bypass comprises a temporary electric appliance, the line maintenance tool comprises a tool support, and a clamping conductive mechanism and a bolt screwing mechanism are arranged on the tool support; and secondly, the bolt matching head of the bolt screwing mechanism is matched with the bolt on the connecting hardware fitting in a rotation stopping manner, the nut matching head of the bolt screwing mechanism is matched with the nut on the connecting hardware fitting in a rotation stopping manner, the bolt and the nut are loosened in a screwing manner, the electric connection between the electric appliance to be maintained and the power transmission line is disconnected, and in the maintenance process of the electric appliance to be maintained, the line maintenance tool is always fixed on the connecting hardware fitting through the clamping of the clamping electric conductor and the connecting hardware fitting. The invention provides a circuit maintenance method which is convenient to operate and can realize the maintenance of an electric appliance without power outage.
Description
Technical Field
The invention relates to a method for maintaining a circuit without power failure in the field of circuit maintenance.
Background
The existing power transmission line comprises a plurality of line poles, a power transmission cable is arranged between every two adjacent line poles, one end of the power transmission cable is connected to an insulator string on one of the line poles through a strain clamp, and the other end of the power transmission cable is connected to an insulator string on the other line pole through the strain clamp.
The tip of transmission cable is connected with the doubling cable through the parallel groove clamp, the doubling cable passes through link fitting and links to each other with the electrical apparatus, link fitting can be binding post or metal sheet etc. the electrical apparatus generally is the circuit breaker, other switchgear such as fuse, when the electrical apparatus goes wrong, need maintain the electrical apparatus, need break off the doubling cable and be connected with the electrical apparatus during the maintenance, if directly go to break off the doubling cable and be connected with the electrical apparatus, just need power failure operation, this can cause industry or life inconvenience undoubtedly, consequently how not to do not cut off realizes just becoming the key in order to circuit maintenance to the electrical apparatus maintenance.
Disclosure of Invention
The invention aims to provide a circuit maintenance method which is convenient to operate and can realize the maintenance of an electric appliance without power outage.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a maintenance method of a circuit without power failure comprises the following steps that firstly, a temporary bypass is connected in parallel to an electric appliance to be maintained through a line maintenance tool, the temporary bypass comprises a temporary electric appliance, the line maintenance tool comprises a tool support, a clamping conductive mechanism and a bolt screwing mechanism are arranged on the tool support, the clamping conductive mechanism comprises a clamping conductive body which is used for being in clamping fit with a connecting hardware fitting, the clamping conductive body is electrically connected with the temporary bypass, the bolt screwing mechanism comprises a nut fitting head and a bolt fitting head, and a fitting head driving mechanism which drives the nut fitting head or the bolt fitting head to rotate and move axially is arranged on the tool support; and secondly, the bolt matching head of the bolt screwing mechanism is matched with the bolt on the connecting hardware fitting in a rotation stopping manner, the nut matching head of the bolt screwing mechanism is matched with the nut on the connecting hardware fitting in a rotation stopping manner, the bolt and the nut are loosened in a screwing manner, the electric connection between the electric appliance to be maintained and the power transmission line is disconnected, and in the maintenance process of the electric appliance to be maintained, the line maintenance tool is always fixed on the connecting hardware fitting through the clamping of the clamping electric conductor and the connecting hardware fitting.
After the maintenance of the electrical appliance to be maintained is finished, the electrical appliance to be maintained is connected to the power transmission circuit, the clamping conductor is clamped to loosen the clamping of the connection fitting, and the temporary bypass and the line maintenance tool are removed.
The bolt fitting head is of a universal sleeve structure.
The clamping electric conductor comprises a main electrode fixed at the end part of the bolt matching head, the main electrode is of an annular structure, the main electrode is provided with a bolt head avoiding hole avoiding the bolt head, the clamping electric conductor also comprises an auxiliary electrode capable of relatively moving and moving back relative to the main electrode under the action of an electrode driving mechanism, and the main electrode is electrically connected with the auxiliary electrode through a flexible lead.
The nut fitting head and the auxiliary electrode are arranged up and down.
The matching head driving mechanism comprises a transmission rod and an axial action motor for driving the transmission rod to axially move, the nut matching head is rotatably assembled on the transmission rod, the matching head driving mechanism further comprises a rotating motor arranged on the transmission rod, and the rotating motor is connected with the nut matching head to drive the nut matching head to rotate.
The invention has the beneficial effects that: when the electric appliance to be maintained needs to be maintained, a line maintenance tool is used for arranging a temporary bypass which is connected with the electric appliance to be maintained in parallel on a power transmission cable, and during specific operation, firstly, a clamping conductor is clamped and conductively connected with a connecting hardware fitting, the temporary bypass is connected into the power transmission line, a clamping conductive mode is adopted, the circuit connection mode is simple, the requirement on the connecting hardware fitting is low, and only a clamped part is needed; the bolt used for realizing the connection of the electric appliance is disassembled on the connecting hardware fitting through the bolt screwing mechanism, the electric appliance to be maintained is disassembled on the power transmission line, the electric appliance to be maintained can be maintained, after the maintenance is finished, the electric appliance to be maintained is connected into the power transmission line, the temporary bypass is removed, and the maintenance operation without power failure is realized.
Drawings
Fig. 1 is a schematic structural view of a line repair tool in embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a state of the circuit repairing tool after the clamping conductor and the connecting fitting are clamped;
FIG. 3 is a schematic diagram of the bolt-tightening mechanism of the line maintenance tool after loosening the bolt and nut;
FIG. 4 is a schematic view of the engagement of the drive rod with the nut engaging head of FIG. 1;
fig. 5 is a schematic structural view of a clamping conductive mechanism of a line repair tool in embodiment 2 of the present invention.
Detailed Description
An embodiment 1 of the uninterrupted power supply circuit maintenance method is shown in fig. 1-4:
a maintenance method of a circuit without power failure comprises the following steps that firstly, a temporary bypass 7 is connected in parallel to an electric appliance to be maintained through a circuit maintenance tool, the temporary bypass comprises a temporary electric appliance (not shown in the figure), the circuit maintenance tool comprises a tool support 11, a clamping conductive mechanism and a bolt screwing mechanism are arranged on the tool support, the clamping conductive mechanism comprises a clamping conductive body which is used for being clamped and matched with a connecting hardware fitting, the clamping conductive body is electrically connected with the temporary bypass 7, the bolt screwing mechanism comprises a nut matching head 12 and a bolt matching head 8, and a matching head driving mechanism which drives the nut matching head or the bolt matching head to rotate and move axially is arranged on the tool support; and secondly, the bolt matching head of the bolt screwing mechanism is in rotation stopping fit with a bolt 18 on the connecting hardware fitting, the nut matching head of the bolt screwing mechanism is in rotation stopping fit with a nut 17 on the connecting hardware fitting, the bolt and the nut are loosened, the electric connection between the electric appliance to be maintained and the power transmission line is disconnected, and in the maintenance process of the electric appliance to be maintained, the line maintenance tool is always fixed on the connecting hardware fitting through clamping of the clamping electric conductor and the connecting hardware fitting.
In this embodiment, the power transmission line is connected with a line where an electrical appliance to be maintained is located through a connection fitting, the connection fitting is a power transmission cable crimping terminal 16 connected with the power transmission cable in a crimping mode, an electrical appliance side crimping terminal 15 is arranged on the electrical appliance side, and in normal use, the electrical appliance side crimping terminal 15 and the power transmission cable crimping terminal 16 are connected through a bolt 18 and a nut 17, so that the electrical appliance is connected to the power transmission line through the power transmission cable.
The bolt matching head 8 is of a universal sleeve structure, the universal sleeve belongs to the prior art, and comprises a fixing sleeve, a plurality of floating rods capable of floating axially are arranged in the fixing sleeve, after the bolt head extends into the fixing sleeve, the floating rods corresponding to the area of the bolt head are pressed to float axially, and the floating rods around the bolt head do not float and can organize the bolt head to rotate. The structure enables the bolt matching head to adapt to bolt heads of various specifications and sizes. Item 13 of the drawing shows a floating spring which can achieve axial floating of the nut fitting head.
The matching head driving mechanism comprises a transmission rod and an axial motion motor 2 for driving the transmission rod to axially move, the axial motion motor can drive the transmission rod 1 to axially move, specifically, the power output end of the axial motion motor is connected with a nut, the transmission rod 1 is in threaded connection with the nut, the transmission rod 1 forms a lead screw, and when the nut rotates, the transmission rod can axially move. The nut matching head 12 is rotatably assembled on the transmission rod 1, the matching head driving mechanism further comprises a rotating motor 14 installed on the transmission rod, and the rotating motor 14 is connected with the nut matching head to drive the nut matching head to rotate.
The clamping conductor comprises a main electrode 9 arranged on the bolt matching head 8, and also comprises an auxiliary electrode 5 which can move relatively and back to the main electrode under the action of the electrode driving mechanism 3, wherein the main electrode 9 is electrically connected with the auxiliary electrode 5 through a flexible lead 4. The main electrode 9 is an annular plate-shaped structure, is fixed to the end of the bolt fitting head, and has a bolt head avoiding hole 10 for avoiding the bolt head. The electrode driving mechanism 3 comprises an electrode driving motor, an electrode driving screw 6 is connected to a motor shaft of the electrode driving motor, the auxiliary electrode 6 is installed on an insulation driving screw nut, the insulation driving screw nut is in threaded connection with the electrode driving screw nut, and therefore when the electrode driving screw nut 6 rotates, the insulation driving screw nut can drive the auxiliary electrode 5 to move axially, and clamping of a connecting fitting is achieved. The nut fitting head and the auxiliary electrode are arranged up and down. The sub-electrode 5 is electrically connected to the main electrode 9 via a flexible lead.
After the maintenance of the electrical appliance to be maintained is finished, the side pressure connection terminal 15 of the electrical appliance penetrates between the bolt and the nut, the bolt screwing mechanism screws the bolt and the nut, the electrical appliance to be maintained is connected to a power transmission circuit, the electric conductor is clamped to loosen the clamping of the connection fitting, and the temporary bypass and the line maintenance tool are removed.
When the electric appliance to be maintained is maintained without power outage, firstly, a temporary bypass with a temporary electric appliance is connected with the electric appliance to be maintained in parallel, the electric appliance to be maintained is connected with a power transmission line through a crimping terminal, the contact area of the crimping terminal except a bolt and a nut is small, in order to guarantee reliable clamping of the crimping terminal, a main electrode adopts an annular structure, an electrode driving mechanism drives an auxiliary electrode to move towards the direction of the main electrode, the main electrode and the auxiliary electrode are matched to clamp and fix the crimping terminal, and the main electrode is electrically connected with the temporary bypass through a lead, so that the temporary bypass is connected into the power transmission line. And then, loosening the bolt and the nut by the bolt screwing mechanism, dismantling the circuit of the electric appliance to be maintained, maintaining the electric appliance to be maintained, extending the side pressure connection terminal of the electric appliance between the bolt matching head and the nut matching head after the maintenance of the electric appliance to be maintained is finished, driving the nut matching head to axially move and rotate by the matching head driving mechanism to complete the screwing action of the bolt and the nut, completing the re-connection of the circuit of the motor to be maintained, loosening the clamping of the main electrode and the auxiliary electrode on the pressure connection terminal of the transmission cable, and removing the temporary bypass. In other embodiments of the invention: the link fitting may also be a metal conductive bar.
In other embodiments of the invention: the bolt matching head can also be rotatably assembled on the tool support, the bolt matching head can be driven by a bolt matching head motor to rotate, the nut matching head can be driven by a nut matching head motor to rotate, the output rotating speeds of the bolt matching head and the nut matching head are different, for example, the output rotating speed of the nut matching head is lower than that of the bolt matching head, when the bolt matching head is used, the nut matching head is used for outputting high-speed low-torque action to a nut, the bolt matching head is used for outputting low-speed high-torque action to a bolt, when the bolt matching head is used for screwing the bolt and the nut, the nut matching head works first, the bolt matching head does not rotate, when the nut matching head is not screwed, the bolt matching head drives a screw rod to rotate, the screwing of the bolt and the nut is completed, and the two power mechanisms are matched, so that the bolt and the nut are screwed and unscrewed efficiently, and the bolt matching head and the nut matching head are driven by independent mechanisms, the mutual noninterference influence each other, simplify transmission structure.
Embodiment 2 of the uninterruptible power supply maintenance method is shown in fig. 5: embodiment 2 is different from embodiment 1 in that the auxiliary electrode 5 does not perform fitting and clamping with the main electrode 9 by linear movement, the electrode driving mechanism 3 is mounted on the bolt fitting head 8, the electrode driving mechanism drives the swing arm 25 to swing back and forth, the auxiliary electrode is mounted on the swing arm, and clamping of the auxiliary electrode on the link fitting is realized by the swing of the swing arm.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A method for maintaining a circuit without power failure is characterized in that: the method comprises the following steps that firstly, a temporary bypass is connected in parallel to an electric appliance to be maintained through a line maintenance tool, the temporary bypass comprises a temporary electric appliance, the line maintenance tool comprises a tool support, a clamping conductive mechanism and a bolt screwing mechanism are arranged on the tool support, the clamping conductive mechanism comprises a clamping conductive body which is used for being in clamping fit with a connecting fitting, the clamping conductive body is electrically connected with the temporary bypass, the bolt screwing mechanism comprises a nut fitting head and a bolt fitting head, and a fitting head driving mechanism which drives the nut fitting head or the bolt fitting head to rotate and axially move is arranged on the tool support; and secondly, the bolt matching head of the bolt screwing mechanism is matched with the bolt on the connecting hardware fitting in a rotation stopping manner, the nut matching head of the bolt screwing mechanism is matched with the nut on the connecting hardware fitting in a rotation stopping manner, the bolt and the nut are loosened in a screwing manner, the electric connection between the electric appliance to be maintained and the power transmission line is disconnected, and in the maintenance process of the electric appliance to be maintained, the line maintenance tool is always fixed on the connecting hardware fitting through the clamping of the clamping electric conductor and the connecting hardware fitting.
2. The uninterruptible power supply circuit maintenance method according to claim 1, wherein: after the maintenance of the electrical appliance to be maintained is finished, the electrical appliance to be maintained is connected to the power transmission circuit, the clamping conductor is clamped to loosen the clamping of the connection fitting, and the temporary bypass and the line maintenance tool are removed.
3. The uninterruptible power supply circuit maintenance method according to claim 1, wherein: the bolt fitting head is of a universal sleeve structure.
4. The uninterruptible power supply circuit maintenance method according to claim 1, wherein: the clamping electric conductor comprises a main electrode fixed at the end part of the bolt matching head, the main electrode is of an annular structure, the main electrode is provided with a bolt head avoiding hole avoiding the bolt head, the clamping electric conductor also comprises an auxiliary electrode capable of relatively moving and moving back relative to the main electrode under the action of an electrode driving mechanism, and the main electrode is electrically connected with the auxiliary electrode through a flexible lead.
5. The uninterruptible power supply circuit maintenance method according to claim 4, wherein: the nut fitting head and the auxiliary electrode are arranged up and down.
6. The uninterruptible power supply circuit maintenance method according to claim 1, wherein: the matching head driving mechanism comprises a transmission rod and an axial action motor for driving the transmission rod to axially move, the nut matching head is rotatably assembled on the transmission rod, the matching head driving mechanism further comprises a rotating motor arranged on the transmission rod, and the rotating motor is connected with the nut matching head to drive the nut matching head to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110791148.1A CN113381343B (en) | 2021-07-13 | 2021-07-13 | Circuit maintenance method without power failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110791148.1A CN113381343B (en) | 2021-07-13 | 2021-07-13 | Circuit maintenance method without power failure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113381343A true CN113381343A (en) | 2021-09-10 |
| CN113381343B CN113381343B (en) | 2023-01-20 |
Family
ID=77581903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110791148.1A Active CN113381343B (en) | 2021-07-13 | 2021-07-13 | Circuit maintenance method without power failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113381343B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10336826A (en) * | 1997-06-03 | 1998-12-18 | Kyudenko Corp | Member for supporting temporary cable connecting apparatus |
| CN102581606A (en) * | 2012-03-07 | 2012-07-18 | 武汉大学 | Mounting and dismantling device for dampers of high-voltage transmission lines |
| CN105058032A (en) * | 2015-06-29 | 2015-11-18 | 国家电网公司 | Overhead high-voltage power transmission line strain clamp drainage plate bolt tightening robot |
| CN205195146U (en) * | 2015-11-23 | 2016-04-27 | 国家电网公司 | Special electronic remote control bolt -up insulating bar of high voltage live operation |
| CN208423617U (en) * | 2018-07-23 | 2019-01-22 | 王萍 | A kind of power circuit foreign matter remove device |
| CN111055242A (en) * | 2019-12-20 | 2020-04-24 | 国网宁夏电力有限公司中卫供电公司 | Special tool for fastening 110kV wiring board bolt in electrified manner |
| CN111786231A (en) * | 2020-08-18 | 2020-10-16 | 国网上海市电力公司 | Clamp holder for lead connecting hardware fitting and operation method |
| CN211867673U (en) * | 2020-04-09 | 2020-11-06 | 国网湖北省电力有限公司襄阳供电公司 | A electrified fastening bolt combination tool for transformer substation equipment maintenance |
| CN213043428U (en) * | 2020-09-27 | 2021-04-23 | 国网四川省电力公司成都供电公司 | Temporary electricity taking device for low-voltage distribution network bypass uninterrupted operation |
-
2021
- 2021-07-13 CN CN202110791148.1A patent/CN113381343B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10336826A (en) * | 1997-06-03 | 1998-12-18 | Kyudenko Corp | Member for supporting temporary cable connecting apparatus |
| CN102581606A (en) * | 2012-03-07 | 2012-07-18 | 武汉大学 | Mounting and dismantling device for dampers of high-voltage transmission lines |
| CN105058032A (en) * | 2015-06-29 | 2015-11-18 | 国家电网公司 | Overhead high-voltage power transmission line strain clamp drainage plate bolt tightening robot |
| CN205195146U (en) * | 2015-11-23 | 2016-04-27 | 国家电网公司 | Special electronic remote control bolt -up insulating bar of high voltage live operation |
| CN208423617U (en) * | 2018-07-23 | 2019-01-22 | 王萍 | A kind of power circuit foreign matter remove device |
| CN111055242A (en) * | 2019-12-20 | 2020-04-24 | 国网宁夏电力有限公司中卫供电公司 | Special tool for fastening 110kV wiring board bolt in electrified manner |
| CN211867673U (en) * | 2020-04-09 | 2020-11-06 | 国网湖北省电力有限公司襄阳供电公司 | A electrified fastening bolt combination tool for transformer substation equipment maintenance |
| CN111786231A (en) * | 2020-08-18 | 2020-10-16 | 国网上海市电力公司 | Clamp holder for lead connecting hardware fitting and operation method |
| CN213043428U (en) * | 2020-09-27 | 2021-04-23 | 国网四川省电力公司成都供电公司 | Temporary electricity taking device for low-voltage distribution network bypass uninterrupted operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113381343B (en) | 2023-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109818298B (en) | Electrified installation device of aerial insulated wire lightning protection puncture fastener | |
| CN208423608U (en) | Architectural engineering erecting cable turning guiding device | |
| CN113381343B (en) | Circuit maintenance method without power failure | |
| CN218216348U (en) | Circuit repair tools | |
| CN212385392U (en) | Coaxial cable joint assembly and disassembly tools | |
| CN212287475U (en) | Assembling and disassembling tool for drainage plate of power transmission cable terminal rod | |
| CN114552497A (en) | Lead lapping device and method for live working robot | |
| CN211074762U (en) | Positioning device for insulator assembly | |
| CN113488784B (en) | Bypass cable wiring method | |
| CN218569710U (en) | Transmission conductor broken strand repairing mechanical arm and conductor repairing mechanism thereof | |
| CN214505798U (en) | Ground wire insulating operating rod with electric disconnecting device | |
| CN218226466U (en) | Bolt tightening tool for aerial line maintenance | |
| CN213716824U (en) | Wiring screw for circuit breaker | |
| CN214312973U (en) | Intelligent remote control system of electrical equipment | |
| CN220382317U (en) | 10KV line drainage wire nose broken wire connecting wire clamp | |
| CN208986499U (en) | A kind of pin insulator nut fastening operating rod convenient for adjusting | |
| CN215734008U (en) | Rain-proof converter convenient to wiring | |
| CN216624835U (en) | Wire twisting and cap pressing machine | |
| CN220324861U (en) | Electrical safety protection device | |
| CN216227884U (en) | Tool for wirelessly remotely controlling electric fastening of side bolt of live equipment | |
| CN210326439U (en) | Wiring device | |
| CN220218358U (en) | Quick dismounting tool for movable insulating terminal | |
| CN218449213U (en) | Electric wire stripping machine suitable for wire harnesses of different sizes | |
| CN221017513U (en) | Tool for removing oxide layer of column insulator | |
| CN219599393U (en) | Copper bar locking auxiliary device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230103 Address after: 450000 room 901, floor 9, unit 1, building 2, 333 Longhai West Road, Zhongyuan District, Zhengzhou City, Henan Province Applicant after: ZHENGZHOU DONGCHEN SCIENCE & TECHNOLOGY Co.,Ltd. Address before: Room 2403, 24 / F, building 1, 238 Tongbai South Road, Zhongyuan District, Zhengzhou City, Henan Province, 450000 Applicant before: Henan Niupa Institute of Mechanical Engineering |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |