CN206640036U - Temporary ground wire on-line monitoring locking device - Google Patents
Temporary ground wire on-line monitoring locking device Download PDFInfo
- Publication number
- CN206640036U CN206640036U CN201720260286.6U CN201720260286U CN206640036U CN 206640036 U CN206640036 U CN 206640036U CN 201720260286 U CN201720260286 U CN 201720260286U CN 206640036 U CN206640036 U CN 206640036U
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- China
- Prior art keywords
- ground wire
- mechanical lock
- mechanical
- sliding sleeve
- housing
- 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.)
- Withdrawn - After Issue
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses a kind of temporary ground wire on-line monitoring locking device, the temporary ground wire on-line monitoring locking device includes background monitoring system, the background monitoring system includes programmable logic device, programmable logic device includes central processing unit, power supply, the output point of numeral and the input point of numeral, signal wire cable is connected with the digital output point of programmable logic device and the input point of numeral, the computer of underground night shift room is connected with the central processing unit of programmable logic device by netting twine, interchanger is installed on netting twine, the computer of ground night shift room is connected with netting twine by optical fiber, optical fiber interpreter is installed on optical fiber, it is characterized in that：The temporary ground wire on-line monitoring locking device also includes interlock assembly.Divide by mistake by the above-mentioned means, the utility model avoids, close breaker, avoiding on-load point, close disconnecting switch, avoid live connection of ground wire, avoiding band ground wire power transmission, avoid mistakenly entering charged chamber.
Description
Technical field
Power domain is the utility model is related to, more particularly to a kind of temporary ground wire on-line monitoring locking device.
Background technology
The maintenance auxiliary equipment that temporary ground wire is commonly used as power station, because temporary ground wire quantity is more, place is more divided
Dissipate, management difficulty is very big, if using lack of standardization, easily triggers serious accident, operating personnel exist during hanging earthing conductor
Live connection of ground wire, the situation of leakage dismounting ground wire may occur during ground wire is removed, exist and line conjunction with ground occurs
The excessive risk of the pernicious misoperation fault of breaker.
Current five-preventing system can't solve the problems, such as the dismounting of temporary ground wire, in order to avoid live connection of ground wire
Or the generation of the pernicious misoperation fault such as switching on earth wire, many measures and servicing unit are introduced in the management of temporary ground wire
In.These method and apparatus serve certain effect in terms of ground wire anti-misoperation, but it is most of be by system it is anti-error and
It is artificial to judge, or independent mode is employed, system background is no and five-preventing system is combined, and is not carried out whole station information
Cross-platform sharing, being all not met by present can only power grid construction and the requirement of digitlization power station technology development.
Utility model content
Technical problem to be solved in the utility model is to realize a kind of remote monitoring to temporary ground wire, avoids mistake
Divide, close breaker, avoid on-load point, close disconnecting switch, avoid live connection of ground wire, avoid band ground wire power transmission, keep away
The device of mistakenly entering charged chamber is exempted from.
To achieve these goals, the technical solution adopted in the utility model is：Temporary ground wire on-line monitoring locking fills
Put, ground protection equipment and ground stud are provided with by the supply line of breaker control circuit break-make, the breaker is provided with first
Mechanical lock, the grounding apparatus protective door of the ground protection equipment are provided with the second mechanical lock, the ground connection being connected with the ground stud
Line installing plate is fixed on substrate, and ground connection locking assembly is fixed with the substrate of the ground wire installing plate side；
The ground connection locking assembly includes the 3rd mechanical lock, the 4th mechanical lock, mounting seat and sliding sleeve, the cunning of the mounting seat
Lead is provided with groove, the sliding sleeve for covering the ground wire installing plate is fixed on guiding column end, the sliding sleeve and installation
Spring is provided between seat, when the sliding sleeve compression spring slips away ground wire installing plate, lockhole and the 4th machine on the sliding sleeve
The latch bolt position of tool lock is engaged, and the sliding sleeve is provided with the gag lever post extended to the 3rd mechanical lock, is connect when the sliding sleeve covers
During ground wire installing plate, the latch bolt position of lockhole and the 3rd mechanical lock on the gag lever post coordinates；
First mechanical lock and the 3rd mechanical lock share the first mechanical key, second mechanical lock and the 4th mechanical lock
Share the second mechanical key.
The ground wire installing plate is externally provided with the second housing, and the second housing side is hinged on substrate, and opposite side is set
There is the pressing plate for stretching out the second housing, second housing side is provided with the via passed through for sliding sleeve, when second housing covers
When being grounded installing plate, the lockhole on the pressing plate is engaged with the latch bolt position of the 4th mechanical lock, the pressing plate be located at sliding sleeve/
Between gag lever post and the 4th mechanical lock.
The shell fragment being fixed on pressing plate, when second housing is opened, the bullet are provided between the substrate and pressing plate
Piece, which is upspring, limits the dead bolt stretching of the 4th mechanical lock, when the second housing closed cap, which is lived, is grounded installing plate, the pressing plate
Pushing shell fragment makes the position of lockhole on pressing plate be engaged with the latch bolt position of the 4th mechanical lock.
The ground connection locking assembly is externally provided with the first housing, and first housing and second shell body forward surface are equipped with for sliding
The via walked is covered, first housing side is provided with supply plate insertion plate hole, and first housing is provided with and the 3rd machine
The key socket that tool lock, the key hole site of the 4th mechanical lock are engaged.
First mechanical lock can only extract the first machinery when the first mechanical key is rotated to breaker open circuit situation
Key, the 4th mechanical lock only rotate to the 4th mechanical lock dead bolt in the second mechanical key while extend into pressing plate and sliding sleeve lock
The second mechanical key can be extracted when in hole, when the sliding sleeve covers ground wire installing plate, the gag lever post is limited through pressure
4th mechanical lock dead bolt of plate lockhole is displaced outwardly.
3rd mechanical lock is only can be with when the first mechanical key rotates and stretches to lockhole on gag lever post to its dead bolt
The first mechanical key is extracted, the second tool lock is only rotated to its dead bolt in the second mechanical key stretches out the protection of locking grounding apparatus
The second mechanical key can be extracted during door.
The contact switch of the 4th mechanical lock latch bolt position of sensing, the contact-making switch output the 4th are fixed with the substrate
Dead bolt status signal is to the computer of ground night shift room and the computer of underground night shift room.
The ground stud is arranged on substrate back, and the ground wire installing plate of the ground stud end is opened by the ground connection on substrate
Mouth extend out to substrate front side.
The utility model is the reliable temporary ground wire anti-incorrect manipulation deadlock logic device of complete set, and it is by temporary grounding
Line includes mechanical coding key lock system, because two mechanical coding locks only have the mechanical coding key of an adaptation, simultaneously
Temporary ground wire is included into monitoring system, realizes the remote monitoring to temporary ground wire, avoids and divides by mistake, closes breaker, avoid
On-load point, disconnecting switch is closed, avoid live connection of ground wire, avoided band ground wire power transmission, avoid mistakenly entering charged chamber.
Brief description of the drawings
The content of every width accompanying drawing expression in the utility model specification and the mark in figure are briefly described below：
Fig. 1 is ground connection locking assembly；
Fig. 2 is that breaker protects door lock assembly；
Fig. 3 is that grounding apparatus protects door lock assembly；
Fig. 4 is ground connection locking assembly internal structure schematic diagram；
Fig. 5 is the ground connection locking assembly internal structure schematic diagram for opening the first housing；
Fig. 6 is the ground connection locking assembly internal structure schematic diagram for opening the second housing；
Mark in above-mentioned figure is：1st, substrate；2nd, the first housing；3rd, the second housing；4th, the 3rd mechanical lock；5th, the 4th machine
Tool is locked；6th, plate hole；7th, breaker；8th, the first mechanical lock；9th, the first mechanical key；10th, the second mechanical key；11st, the second machine
Tool is locked；12nd, grounding apparatus protective door；13rd, fixed seat；14th, ground connection opening；15th, sliding sleeve；16th, ground stud；17th, ground wire installation
Plate；18th, gag lever post；19th, pressing plate；20th, contact switch；21st, cable-through hole；22nd, shell fragment.
Embodiment
Temporary ground wire on-line monitoring locking device is cooperated using four mechanical locks, realizes that temporary ground wire standardizes
Operation.
As shown in Fig. 2 breaker 7 is provided with the first mechanical lock 8, the lock core of the first mechanical lock 8 is rotated by the first mechanical key 9
Control, the dead bolt of the first mechanical lock 8 are the operating mechanism of push-and-pull breaker 7, can be controlled by the first mechanical key 9 of rotation disconnected
The break-make of road device 7, temporary ground wire on-line monitoring locking device can match somebody with somebody according to the quantity of the breaker 7 corresponding to grounding apparatus
Put the quantity of mechanical coding lock.
As shown in figure 3, ground protection equipment is provided with protective door, grounding apparatus protective door 12 is provided with the second mechanical lock 11, the
Two mechanical locks 11 are furnished with the second mechanical key 10, by rotating the second mechanical key 10 grounding apparatus protective door 12 can be controlled to lock
Only or open.
As shown in Fig. 1,4,5 and 6, the back side of substrate 1 is used to be fixed on metope or some object, and the front of substrate 1 is set
There are ground wire installing plate 17 and ground connection locking assembly, ground stud 16 is arranged on the back side of substrate 1, the ground wire peace of the end of ground stud 16
Loading board 17 extend out to the front of substrate 1 by the ground connection opening 14 on substrate 1, and ground wire installing plate 17 is used to connect ground path.
Ground connection locking assembly includes the 3rd mechanical lock 4, the 4th mechanical lock 5, mounting seat and sliding sleeve 15, and mounting seat is fixed on base
On plate 1, chute is provided with mounting seat, lead can be slid along by being provided with chute, and sliding sleeve 15 is fixed on the end of lead,
Spring is cased with outside lead, the both ends of spring are separately fixed in sliding sleeve 15 and mounting seat, and when the non-stress of spring, sliding sleeve 15 covers
Ground wire installing plate 17 outside, the outer end of sliding sleeve 15 is opening-like, avoid sliding sleeve 15 along substrate 1 slides when be grounded installing plate
17 interfere, and facilitate sliding sleeve 15 to slip away and are grounded installing plate 17, or slide on ground wire installing plate 17, the work of sliding sleeve 15
With being limitation patching operations, only when sliding sleeve 15 slips away ground wire installing plate 17, can be connect in ground wire installing plate 17
Line operates.
Sliding sleeve 15 is provided with the gag lever post 18 extended to the 3rd mechanical lock 4, and gag lever post 18 can be parallel with lead, is limiting
Lockhole is equipped with the position outer end of bar 18 and sliding sleeve 15, when the compression spring of sliding sleeve 15 slips away ground wire installing plate 17, on sliding sleeve 15
Lockhole be engaged with the latch bolt position of the 4th mechanical lock 5, the locking sliding sleeve 15 of the 4th mechanical lock 5 can be utilized, when sliding sleeve 15 covers
When being firmly grounded installing plate 17, the latch bolt position of lockhole and the 3rd mechanical lock 4 on gag lever post 18 coordinates, and can utilize the 3rd machine
The dead bolt locking gag lever post 18 of tool lock 4, and then the displacement of sliding sleeve 15 now.
In order to limit the operating procedure of staff, the first mechanical lock 8 and the 3rd mechanical lock 4 share the first mechanical key 9,
Second mechanical lock 11 and the 4th mechanical lock 5 share the second mechanical key 10.
For the ground wire installing plate 17 on protective substrate 1 and ground connection locking assembly, substrate 1 is provided with the He of the first housing 2
Second housing 3, the first housing 2 is affixed on substrate 1, and it is covered on outside ground connection locking assembly, and the second housing 3 is fixed on the first housing
2 sides, it is covered on by ground wire installing plate 17, and the side of the second housing 3 is be hinged on substrate 1, and opposite side is (close to the first housing
2 sides) can activity raise, expose the inside ground wire installing plate 17, be provided with the second housing 3 close to the side of the first housing 2
The pressing plate 19 of protrusion, when the second housing 3 covers ground wire installing plate 17, i.e. the edge of the second housing 3 contacts substrate 1, pressing plate
Lockhole on 19 is engaged with the latch bolt position of the 4th mechanical lock 5, the bolt lock of the 4th mechanical lock 5 can be utilized to stop pressing plate
19, so that the second housing 3 is in lockup state.Pressing plate 19 is located between the gag lever post 18 of sliding sleeve 15/ and the 4th mechanical lock 5, i.e.,
When second housing 3 closes, otherwise pressing plate 19 is located between the mechanical lock 5 of sliding sleeve 15 and the 4th, otherwise it is located at gag lever post 18 and the 4th
Between mechanical lock 5.When sliding sleeve 15 is covered on ground wire installing plate 17, the dead bolt of the 4th mechanical lock 5 can only pass through pressing plate 19
Lockhole, and can not move on, the outer end of the dead bolt can prop up the side of gag lever post 18, and when sliding sleeve 15 is to the direction of fixed seat 13
After slip, dead bolt of the lockhole also with the 4th mechanical lock 5 on sliding sleeve 15 coordinates, and now the dead bolt can be also cross the He of pressing plate 19
Lockhole on sliding sleeve 15, now the second mechanical key 10 of the 4th mechanical lock 5 be screwed to end of travel.
In order to avoid producing interference with sliding sleeve 15, the first housing 2 and the forward surface of the second housing 3 are equipped with and walked for sliding sleeve 15
Via, the side of the first housing 2 be provided with supply plate 19 insert plate hole 6, the first housing 2 be provided with and the 3rd mechanical lock the 4, the 4th
The key socket that the key hole site of mechanical lock 5 is engaged.
The shell fragment 22 being fixed on pressing plate 19, when the second housing 3 is opened, shell fragment 22 are provided between substrate 1 and pressing plate 19
Upspring and limit the dead bolt stretching of the 4th mechanical lock 5 so that the second mechanical key 10 can not be screwed to end of travel, when the second housing 3
When closure covers ground wire installing plate 17, pressing plate 19, which pushes shell fragment 22, makes the position of lockhole and the 4th mechanical lock 5 on pressing plate 19
Latch bolt position is engaged, and can utilize the dead bolt locking pressing plate 19 of the 4th mechanical lock 5, and then locking sliding sleeve 15.
The work-based logic of mechanical lock is as follows：First mechanical lock 8 is only rotated to 7 breaking shape of breaker in the first mechanical key 9
The first mechanical key 9 can be extracted during condition, the 4th mechanical lock 5 is only rotated to the dead bolt of the 4th mechanical lock 5 in the second mechanical key 10
The second mechanical key 10 can be extracted when extending into pressing plate 19 and the lockhole of sliding sleeve 15 simultaneously, when sliding sleeve 15 covers ground wire installation
During plate 17, the dead bolt of the 4th mechanical lock 5 that gag lever post 18 is limited through the lockhole of pressing plate 19 is displaced outwardly.3rd mechanical lock 4 only
First mechanical key 9, which rotates, can extract the first mechanical key 9 when stretching to lockhole on gag lever post 18 to its dead bolt, the second tool lock
Only the second mechanical key can be extracted when the second mechanical key 10 rotates and stretches out locking grounding apparatus protective door 12 to its dead bolt
10。
The state of ground signalling is shared for convenience, and the contact of the sensing latch bolt position of the 4th mechanical lock 5 is fixed with substrate 1
Switch 20, the contact-making switch export the 4th dead bolt status signal to the computer of ground night shift room and the computer of underground night shift room.
Contact switch 20 can show 0 and 1 two variable and passed by signal wire cable with extending and retracting for the dead bolt of the 4th mechanical lock 5
It is delivered on programmable logic device and is shown on the computer of underground night shift room with figure, word, acousto-optic etc., then passes through optical fiber
The computer of ground night shift room is passed to, reminds the mounting state of the specific equipment temporary earth wire of night shift room personnel, 1 represents to connect,
Programmable logic device lamp is bright, and the computer of underground night shift room and the computer of ground night shift room show it is to disconnect, and display, which does not mount, faces
When be grounded, 0 is disconnected, and programmable logic device lamp gone out, and the computer of underground night shift room is shown with the computer of ground night shift room to be connected,
Display has mounted temporary ground wire.
Operating method based on above-mentioned temporary ground wire on-line monitoring locking device：
Original state, the first mechanical key 9 are inserted in the first mechanical lock 8, and the second mechanical key 10 is inserted in the 4th mechanical lock 5
It is interior；
During ground connection operation：
1) the first mechanical key 9 of rotation makes the open circuit of breaker 7, and now the first mechanical key 9 is released, and can extract the
One mechanical key 9；
2) the first mechanical key 9 is inserted in the 3rd mechanical lock 4, the dead bolt of the 3rd mechanical lock 4 is bounced back, release gag lever post
18 lockup state, sliding sleeve 15 can be carried out；
3) in the case where being provided with the second housing 3, the second mechanical key turned on the 4th mechanical lock 5 can be first passed through
10, dead bolt is reclaimed, unlocks pressing plate 19, opens the second housing 3, then promotes sliding sleeve 15 to expose its internal ground wire installing plate
17, ground path is installed on ground wire installing plate 17；
4) the second mechanical key 10 on the 4th mechanical lock 5 is rotated, the dead bolt of the 4th mechanical lock 5 is extend into sliding sleeve 15
In lockhole, when there is the second housing 3, the pressing plate 19 of the second housing 3 can be utilized to push shell fragment 22, make the lock of the 4th mechanical lock 5
Tongue is also cross pressing plate 19 and the lockhole of sliding sleeve 15 so that the second mechanical key 10 can be screwed to end of travel, can remove；
5) the second mechanical key 10 is inserted into the second mechanical lock 11, opens grounding apparatus protective door 12, complete whole ground connection
Operating process；
When releasing ground connection operation：
1) close grounding apparatus protective door 12 and rotate the second mechanical lock of locking 11 of the second mechanical key 10, remove the second machine
Tool key 10；
2) ground path on ground wire installing plate 17 is removed；
3) the second mechanical key 10 is inserted in the 4th mechanical lock 5, the second mechanical key 10 of rotation makes the 4th mechanical lock 5
Dead bolt bounces back, while closes the second housing 3, can select the half stroke of the second mechanical key 10, its dead bolt is only can extend into
Into the lockhole of pressing plate 19, the second housing of locking 3；
4) the first mechanical key 9 on the 3rd mechanical lock 4 is rotated, the dead bolt of the 3rd mechanical lock 4 is stretched out locking gag lever post
18；
5) the first mechanical key 9 is inserted in the first mechanical lock 8, the first mechanical key 9 of rotation makes the path of breaker 7, returns
Return original state.
The utility model is exemplarily described above in conjunction with accompanying drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as employing changing for the various unsubstantialities that methodology and technical scheme of the present utility model are carried out
Enter, or it is not improved by it is of the present utility model design and technical scheme directly apply to other occasions, in the utility model
Protection domain within.
Claims (8)
1. temporary ground wire on-line monitoring locking device, set by the supply line of breaker control circuit break-make provided with ground protection
Standby and ground stud, it is characterised in that：The breaker is provided with the first mechanical lock, the grounding apparatus protection of the ground protection equipment
Door is provided with the second mechanical lock, and the ground wire installing plate being connected with the ground stud is fixed on substrate, the ground wire installing plate
Ground connection locking assembly is fixed with the substrate of side；
The ground connection locking assembly includes the 3rd mechanical lock, the 4th mechanical lock, mounting seat and sliding sleeve, in the chute of the mounting seat
Provided with lead, the sliding sleeve for covering the ground wire installing plate is fixed on guiding column end, the sliding sleeve and mounting seat it
Between be provided with spring, when the sliding sleeve compression spring slips away ground wire installing plate, lockhole and the 4th mechanical lock on the sliding sleeve
Latch bolt position be engaged, the sliding sleeve be provided with to the 3rd mechanical lock extend gag lever post, when the sliding sleeve covers ground wire
During installing plate, the latch bolt position of lockhole and the 3rd mechanical lock on the gag lever post coordinates；
First mechanical lock and the 3rd mechanical lock share the first mechanical key, and second mechanical lock and the 4th mechanical lock share
Second mechanical key.
2. temporary ground wire on-line monitoring locking device according to claim 1, it is characterised in that：The ground wire installation
Plate is externally provided with the second housing, and the second housing side is hinged on substrate, and opposite side is provided with the pressing plate for stretching out the second housing, institute
State the second housing side and be provided with the via passed through for sliding sleeve, when second housing covers ground wire installing plate, the pressing plate
On lockhole be engaged with the latch bolt position of the 4th mechanical lock, the pressing plate is between sliding sleeve/gag lever post and the 4th mechanical lock.
3. temporary ground wire on-line monitoring locking device according to claim 2, it is characterised in that：The substrate and pressing plate
Between be provided with and be fixed on shell fragment on pressing plate, when second housing is opened, the shell fragment, which is upspring, limits the 4th mechanical lock
Dead bolt stretches out, and when the second housing closed cap, which is lived, is grounded installing plate, the pressing plate, which pushes shell fragment, makes lockhole on pressing plate
Position is engaged with the latch bolt position of the 4th mechanical lock.
4. temporary ground wire on-line monitoring locking device according to claim 3, it is characterised in that：The ground connection locking group
Part is externally provided with the first housing, and first housing and second shell body forward surface are equipped with the via walked for sliding sleeve, and described first
Housing side is provided with supply plate insertion plate hole, and first housing is provided with the key with the 3rd mechanical lock, the 4th mechanical lock
The key socket that hole site is engaged.
5. the temporary ground wire on-line monitoring locking device according to claim 2,3 or 4, it is characterised in that：Described first
Mechanical lock can only extract the first mechanical key, the 4th machinery when the first mechanical key is rotated to breaker open circuit situation
Lock can only extract the when the second mechanical key is rotated to the 4th mechanical lock dead bolt while is extend into pressing plate and sliding sleeve lockhole
Two mechanical keys, when the sliding sleeve covers ground wire installing plate, fourth machinery of the gag lever post limitation through pressing plate lockhole
Lock dead bolt is displaced outwardly.
6. temporary ground wire on-line monitoring locking device according to claim 5, it is characterised in that：3rd mechanical lock
The first mechanical key, the second tool only can be being extracted when the first mechanical key rotates and stretches to lockhole on gag lever post to its dead bolt
Lock only can extract the second mechanical key when the second mechanical key rotates and stretches out locking grounding apparatus protective door to its dead bolt.
7. the temporary ground wire on-line monitoring locking device according to claim 1,2,3,4 or 6, it is characterised in that：It is described
The contact switch of the 4th mechanical lock latch bolt position of sensing is fixed with substrate, the contact switch exports the 4th dead bolt status signal
To the computer of ground night shift room and the computer of underground night shift room.
8. temporary ground wire on-line monitoring locking device according to claim 7, it is characterised in that：The ground stud is set
In substrate back, the ground wire installing plate of the ground stud end extend out to substrate front side by the ground connection opening on substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720260286.6U CN206640036U (en) | 2017-03-17 | 2017-03-17 | Temporary ground wire on-line monitoring locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720260286.6U CN206640036U (en) | 2017-03-17 | 2017-03-17 | Temporary ground wire on-line monitoring locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206640036U true CN206640036U (en) | 2017-11-14 |
Family
ID=60249411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720260286.6U Withdrawn - After Issue CN206640036U (en) | 2017-03-17 | 2017-03-17 | Temporary ground wire on-line monitoring locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206640036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654726A (en) * | 2017-03-17 | 2017-05-10 | 国家电网公司 | Temporary ground wire online monitoring and locking device and operating method thereof |
-
2017
- 2017-03-17 CN CN201720260286.6U patent/CN206640036U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654726A (en) * | 2017-03-17 | 2017-05-10 | 国家电网公司 | Temporary ground wire online monitoring and locking device and operating method thereof |
| CN106654726B (en) * | 2017-03-17 | 2022-08-23 | 国家电网公司 | On-line monitoring locking device for temporary grounding wire and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171114 Effective date of abandoning: 20220823 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20171114 Effective date of abandoning: 20220823 |