CN205881802U - Keep apart sword interlocking operating device - Google Patents
Keep apart sword interlocking operating device Download PDFInfo
- Publication number
- CN205881802U CN205881802U CN201620752780.XU CN201620752780U CN205881802U CN 205881802 U CN205881802 U CN 205881802U CN 201620752780 U CN201620752780 U CN 201620752780U CN 205881802 U CN205881802 U CN 205881802U
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- China
- Prior art keywords
- plate
- pin
- isolation knife
- axle
- earthing
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- Withdrawn - After Issue
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Abstract
The utility model belongs to the technical field of the circuit breaker technique and specifically relates to a keep apart sword interlocking operating device, the load simulator comprises a case, the operating axis I of driving isolation sword and the operating axis II of drive ground connection sword are rotationally installed to the machine incasement, be fixed with the spacing dish that has the spacing groove on the operating axis I, the below of spacing dish is equipped with vertical gliding round pin axle, be equipped with the cam on the operating axis II, the cam will be sold the crown of roll and lean on at limiting groove when the ground connection sword closes a floodgate, I unable rotation of operating axis of keeping apart the sword this moment, guarantee to keep apart the state that the sword is in the disconnection, realize mechanical interlocking, this mechanical interlocking structure simplifies with low costsly and the security is high, especially, be adapted to the control and the protection of the special preassembled bin formula transformer substation middle and high voltage side of wind -powered electricity generation, be suitable for high height above sea level, the grassland, operating environment such as desert, but the direct mount is in europe becomes the high -pressure chamber position, the interlocking perfects reliably, the performance satisfies wind -powered electricity generation field operation requirement completely.
Description
Technical field
This utility model relates to breaker technical field, especially a kind of isolation knife mechanical interlocking actuating mechanism.
Background technology
Chopper is electric equipment commonly used in high tension distribution system, and it has generally included chopper and isolation knife
Lock, the effect of chopper is to close a floodgate and connects circuit and separating brake disconnecting circuit, and it is used for close a floodgate connection circuit or separating brake disconnection
It is indoor that the contact of circuit is arranged on vacuum extinction, is not susceptible to electric arc when contact combined floodgate or separating brake, and security performance is the highest.Isolation
The effect of disconnecting link is to set up reliable clearance for insulation, is separated with an obvious cut-off point by circuit, to ensure operation
Personnel and the safety of equipment.During operation vacuum circuit breaker separating brake, need first operating breaker separating brake, the most again operation isolation cutter
Lock separating brake, when operating vacuum circuit breaker and closing a floodgate, needs first operation isolation disconnecting link to close a floodgate, then operating breaker closes a floodgate.
When operating breaker closes a floodgate, if isolation switch closes a floodgate the most completely, then when after breaker closing, isolation knife
The position that lock closes a floodgate the most completely will produce electric arc, these electric arcs not only damage equipment, also can bring great potential safety hazard.Existing
In reality, the either defect of some high-pressure vacuum breaker product self, or error during operative, it is likely to cause
Isolation switch accident turning circuit, will certainly damage equipment or initiation potential.
Utility model content
The purpose of this utility model is the defect overcoming prior art to exist, it is provided that a kind of isolation knife interlocking operation mechanism,
Simple in construction and can realize mechanical interlocking improve safety.
In order to realize the purpose of this utility model, be the technical scheme is that
Isolation knife interlocking operation mechanism of the present utility model, including cabinet, is rotatably mounted with driving in described cabinet
The operation axle I of isolation knife and the operation axle II of driving earthing, described operation axle I is fixed with the position-arresting disk with stopper slot,
The lower section of described position-arresting disk is provided with vertically slidable bearing pin, and described operation axle II is provided with cam, and earthing is described convex when closing a floodgate
Described bearing pin is acted against in described stopper slot by wheel.
Position-arresting disk described in the utility model is provided with three stopper slots and is respectively separating brake station groove combined floodgate station groove and ground connection
Station groove, the lower section of described position-arresting disk is fixed with axis pin base, and described axis pin base includes upper plate lower plate and side plate, described upper plate and under
Plate is fixed on described side plate, and described pin slide is arranged in upper plate and lower plate, and one end of described bearing pin is positive stop end, described
Positive stop end is through described upper plate and towards described position-arresting disk, and the other end of described bearing pin is free end, and described free end passes
Described lower plate towards described cam.
It is also equipped with plate on operation axle II described in the utility model, in cabinet, is slidably fitted with montant, one end of montant
Being installed with the pressing plate coordinated with plate, the other end of montant reaches the outside of cabinet, and the outside of cabinet is provided with pin,
Montant is connected by the upper end of contiguous block and pin is fixing, and it is interior and be positioned at chopper that the lower end of pin extend into the casing of chopper
The side of separating brake plate.
Bearing pin described in the utility model is provided with the periphery of pin and bearing pin and is arranged with coil tension spring, described coil tension spring
One end is resisted against on described pin, and the other end of described coil tension spring is resisted against in lower plate.
It is hinged with hand lever on side plate described in the utility model, described side plate is additionally provided with vertical waist hole, described pin
One end is through described vertical waist hole hinged with one end of described hand lever, and the other end of described hand lever reaches cabinet
Outside.
One end of operation axle I described in the utility model drives isolation knife to move by transmission component, described operation axle I another
Outer one end has operating head, and the panel of described cabinet is provided with the gathering hole corresponding with described operating head, the one of described gathering hole
Slideslip is provided with valve.
One end of operation axle II described in the utility model drives earthing to move by linkage, described operation axle II
Other end has swivel joint, and the panel of described cabinet is provided with the port corresponding with described swivel joint, described port
Side is slidably fitted with dodge gate.
Linkage described in the utility model includes the first linked block, connecting rod and the second linked block being hinged successively,
Described first linked block and described operation axle II end are fixing to be connected, and described second linked block is fixedly connected with rotating shaft, described in connect
The side of movable end of cutter bottom, ground is provided with grounding contact, described earthing under the driving of described operation axle II with described ground connection
Contact connects.
Isolation knife interlocking operation mechanism described in the utility model also includes earthing on/off switch holding means, and earthing closes and divides
Lock holding means includes the slip cap that the connecting lever being arranged on roller end is connected and the guide post being socketed in slip cap with connecting lever,
Described guide post is arranged in the axis hole of fixed plate, and described guide post is arranged with stage clip, one end of described stage clip and described cunning
Dynamic set is fixing to be connected, and the other end of described stage clip is fixed in described fixed plate.
Spacing block set, the side of described spacing block set all it is arranged with on operation axle I described in the utility model and operation axle II
It is provided with microswitch.
Isolation knife interlocking operation mechanism of the present utility model provides the benefit that: isolation knife interlocked operation of the present utility model
Mechanism includes cabinet, is rotatably mounted with the operation axle I driving isolation knife and the operation axle II driving earthing, behaviour in cabinet
Making to be fixed with the position-arresting disk with stopper slot on axle I, the lower section of position-arresting disk is provided with vertically slidable bearing pin, and operation axle II is provided with
Cam, when earthing closes a floodgate, bearing pin is acted against in stopper slot by cam, and now the operation axle I of isolation knife cannot rotate, it is ensured that every
Being in the state of disconnection from cutter, it is achieved mechanical interlocking, this mechanical interlocking structure simplifies low cost and safety is high, is specially adapted to
The control of wind-powered electricity generation special pre-casing type transforming station mesohigh side and protection, be suitable for the running environment such as High aititude, grassland, desert, this
Outward, isolation knife interlocking operation mechanism of the present utility model is modular cabinet structure, can be directly mounted at Europe and becomes in high pressure position in storehouse,
Interlocking improves reliable, and performance fully meets wind energy turbine set and uses requirement.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of isolation knife interlocking operation mechanism of the present utility model；
Fig. 2 is position-arresting disk installation cooperation structure schematic diagram of the present utility model；
Fig. 3 is pin shaft mounting structure schematic diagram of the present utility model；
Fig. 4 is plate mounting structure schematic diagram of the present utility model；
Fig. 5 is linkage schematic diagram of the present utility model；
Fig. 6 is earthing on/off switch holding means structural representation of the present utility model.
Wherein: cabinet 1；Operation axle I 2, position-arresting disk 21；Operation axle II 3, cam 31, plate 32, pressing plate 33, montant 34, gear
Bar 35；Bearing pin 41, axis pin base 42, pin 43, coil tension spring 44, hand lever 45；First linked block 51, connecting rod 52, second interlocks
Block 53, rotating shaft 54；Connecting lever 61, slip cap 62, guide post 63, stage clip 64, fixed plate 65；Earthing 7；Isolation knife 8.
Detailed description of the invention
In description of the present utility model, it is to be understood that term " radially ", " axially ", " on ", D score, " top ",
Orientation or the position relationship of the instruction such as " end ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to just
Describe in description this utility model and simplification rather than indicate or imply that the device of indication or element must have specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.In description of the present utility model
In, except as otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " setting ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art,
Above-mentioned term concrete meaning in this utility model can be understood as the case may be.
As shown in figures 1 to 6, the isolation knife interlocking operation mechanism of the present embodiment is modular operating mechanism, is adapted to difference
The chopper of type, in order to ensure the safety of maintainer during maintenance chopper, needs to break the isolation knife 8 of chopper upstream
Opening, make circuit have obvious breakpoint, it is ensured that circuit disconnects, in order to prevent maloperation, the present embodiment provides a kind of isolation knife connection
Latching operation mechanism, can realize isolation knife 8 separating brake and the mechanical interlocking of earthing 7 combined floodgate, it is ensured that isolation knife 8 is in gate-dividing state,
Occur during maloperation, there will be short circuit tripping operation, it is ensured that overhaul of line breaker personal security.
Specifically, the isolation knife interlocking operation mechanism of the present embodiment includes cabinet 1, is rotatably mounted with and drives in cabinet 1
The operation axle I 2 of dynamic isolation knife 8 and the operation axle II 3 of driving earthing 7, operation axle I 2 is fixed with and has the spacing of stopper slot
Dish 21, the lower section of position-arresting disk 21 is provided with vertically slidable bearing pin 41, and operation axle II 3 is provided with cam 31, and earthing 7 is convex when closing a floodgate
Bearing pin 41 is acted against in described stopper slot by wheel 31, and now the operation axle I 2 of isolation knife 8 cannot rotate, it is ensured that isolation knife 8 is in
The state disconnected, it is achieved mechanical interlocking, the simple low cost of this interlock, and safety is high.
Position-arresting disk 21 in the present embodiment is provided with three stopper slots and is respectively separating brake station groove, combined floodgate station groove and ground connection
Station groove, in during isolation knife 8 separating brake, bearing pin 41 acts against separating brake station groove, when isolation knife 8 is closed a floodgate, bearing pin 41 acts against combined floodgate work
In the groove of position, ground connection station groove is the most vacant, and wherein, the concrete mounting structure of bearing pin 41 is: the lower section of position-arresting disk 21 is solid
Surely having axis pin base 42, axis pin base 42 to include that upper plate, lower plate and side plate, upper plate and lower plate are fixed on side plate, bearing pin 41 slides and pacifies
Being contained in upper plate and lower plate, one end of bearing pin 41 is positive stop end, positive stop end through upper plate and towards position-arresting disk 21, bearing pin 41 another
Outer one end is free end, and free end is through lower plate towards cam 31, and the middle and upper part of bearing pin 41 is provided with pin 43 and bearing pin 41
Periphery is arranged with coil tension spring 44, and one end of coil tension spring 44 is resisted against on pin 43, the other end of coil tension spring 44 against
In lower plate, bearing pin 41 can act against separating brake station groove, combined floodgate station groove or ground connection station groove under the effect of coil tension spring 44
In.
For the ease of unblock bearing pin 41 with manipulation operation axle I 2, the present embodiment provides a kind of unlocking mechanism, specifically, side plate
On be hinged with hand lever 45, side plate is additionally provided with vertical waist hole, one end of pin 43 through vertical waist hole and with hand lever 45
One end is hinged, and the other end of hand lever 45 reaches the outside of cabinet 1 and this end is provided with handle, when lifting handle, and hands
Lever 45 can drive bearing pin 41 to move downward disengaging stopper slot, now free actuating can operate axle I 2, only at cam 31
When lobe deviates the free end of bearing pin 41, just can freely unlock.
In order to improve the processing safety of chopper further, the isolation knife interlocking operation mechanism of the present embodiment also with open circuit
The operating mechanism interlocking of device, the operating mechanism of chopper is positioned at the lower section of cabinet 1, specifically, operation axle II 3 is also equipped with dialling
Plate 32, is slidably fitted with montant 34 in cabinet 1, one end of montant 34 is installed with the pressing plate 33 coordinated with plate 32, montant
The other end of 34 reaches the outside of cabinet, and the outside of cabinet is provided with pin 35, and montant 34 is by contiguous block and pin 35
Upper end is fixing to be connected, in the lower end of pin 35 extend into the casing of chopper and be positioned at the side of breaker open operation plate, pin 35
End for the separating brake plate of stuck chopper, when earthing closes a floodgate, the plate 32 operated on axle II 3 stirs downwards pressing plate
33, pressing plate 33 drives pin 35 to move downward, and pin 35 cannot move upward, and now the bottom of pin 35 is blocked chopper and divided
Flashboard make chopper cannot separating brake, when earthing separating brake, plate 32 along with operation axle II 3 deflection, now plate 32 is upwards
Stirring pressing plate 33, pin 35 moves upward away from breaker open operation plate, and circuit breaker operation mechanism unlocks, and separating brake plate can freely be grasped
Dynamic, achieve three interlockings of chopper, earthing and isolation knife by the way, substantially increase breaker operator safety
Property.In order to improve the stability of pin 35 motion, guide plate can be installed additional in the end of pin 35.
One end of operation axle I 2 in the present embodiment drives isolation knife 8 to move by transmission component, and operation axle I 2 is additionally
One end has operating head, and the panel of cabinet 1 is provided with the gathering hole corresponding with operating head, and the side of gathering hole is slidably fitted with work
Door, just can be connected to lever on operating head when opening valve manipulate operation axle I 2.
One end of operation axle II 3 in the present embodiment drives earthing 7 to move by linkage, operates the another of axle II 3
Outer one end has swivel joint, and the panel of cabinet 1 is provided with the port corresponding with swivel joint, and the side of port is slidably fitted with
Dodge gate.Wherein, linkage includes the first linked block 51, connecting rod 52 and the second linked block 53 being hinged successively, first
Linked block 51 is fixing with operation axle II 3 end to be connected, and the second linked block 53 is fixedly connected with rotating shaft 54, rotating shaft 54 is provided with and connects
Ground cutter 7, the side of the movable end of earthing 7 bottom is provided with grounding contact, earthing 7 operation axle II 3 driving under with ground connection
Contact connects.
When overhauling chopper and needing isolation knife 8 separating brake, first manipulation operation axle I 2 drives isolation knife 8 separating brake, now bearing pin
41 can head in separating brake station groove under the effect of coil tension spring 44, and then manipulation operation axle II 3 drives earthing 7 to close a floodgate, this
Time cam 31 lobe can withstand the free end of bearing pin 41, such handle cannot be stirred, and operation axle I 2 also cannot rotate, it is ensured that
Isolation knife 8 gate-dividing state.
In order to allow earthing 7 keep "on" position, the present embodiment to also provide for a kind of earthing on/off switch holding means, specifically
Ground, the slip cap 62 that is connected with connecting lever 61 including the connecting lever 61 being arranged on rotating shaft 54 end and be socketed in leading in slip cap 62
To bar 63, guide post 63 is arranged in the axis hole of fixed plate 65, and guide post 63 is arranged with stage clip, one end of stage clip and slip cap
62 fixing connections, the other end of stage clip is fixed in fixed plate 65.
When earthing 7 is by separating brake Switch of working position to combined floodgate station, rotated by operation axle II 3 drive shaft 54, rotating shaft
54 can drive connecting lever 61 to rotate, and connecting lever 61, while rotating, can drive slip cap 62 to slide, and slip cap 62 extrudes stage clip 64,
After arriving combined floodgate station, stage clip 64 stretches and rotating shaft 54 is acted against relevant position, if separating brake rotating shaft 54 must pull against
The pressure of stage clip 64 could rotate, and therefore earthing 7 is maintained at closing position under the effect of stage clip 64, prevents earthing 7 bullet
Rise or unusual fluctuation, it is ensured that the safety of electrical equipment.
When earthing 7 closes a floodgate, the cam 31 on operation axle II 3 can withstand bearing pin 41, it is ensured that isolation knife 8 is in separating brake shape
State, behaviour leads and is substantially reduced by mistake, will not have an accident even if occurring maloperation circuit to be energized suddenly also under earthing 7 "on" position.
In order to improve manipulation safety further, operation axle I 2 and operation axle II 3 are all arranged with spacing block set, limit convex
The side of block is provided with microswitch, and microswitch can trigger electromagnetism close/open machine, when there is potential safety hazard, microswitch
Electromagnetism close/open machine can be triggered, it is ensured that breaker safe.
The isolation knife interlocking operation mechanism simple in construction of the present embodiment and safety are high, are specially adapted to the special prepackage of wind-powered electricity generation
The control of box-type substation mesohigh side and protection, be suitable for the running environment such as High aititude, grassland, desert, can be directly mounted at Europe
Uprising in pressure position in storehouse, interlocking improves reliable, and performance fully meets wind energy turbine set and uses requirement.
Should be appreciated that specific embodiment described above is only used for explaining this utility model, be not used to limit this reality
With novel.The obvious change extended out by spirit of the present utility model or variation are still in protection of the present utility model
Among scope.
Claims (10)
1. an isolation knife interlocking operation mechanism, including cabinet (1), is rotatably mounted with driving isolation in described cabinet (1)
The operation axle I (2) of cutter (8) and the operation axle II (3) of driving earthing (7), it is characterised in that: described operation axle I (2) is upper fixing
Having the position-arresting disk (21) with stopper slot, the lower section of described position-arresting disk (21) is provided with vertically slidable bearing pin (41), described operation
Axle II (3) is provided with cam (31), and when earthing (7) closes a floodgate, described bearing pin (41) is acted against described spacing by described cam (31)
In groove.
Isolation knife interlocking operation mechanism the most according to claim 1, it is characterised in that: described position-arresting disk (21) is provided with three
Individual stopper slot is respectively separating brake station groove, combined floodgate station groove and ground connection station groove, and the lower section of described position-arresting disk (21) is fixed with pin
Axle bed (42), described axis pin base (42) includes that upper plate, lower plate and side plate, described upper plate and lower plate are fixed on described side plate, institute
Stating bearing pin (41) to be slidably mounted in upper plate and lower plate, one end of described bearing pin (41) is positive stop end, and described positive stop end passes institute
Stating upper plate and towards described position-arresting disk (21), the other end of described bearing pin (41) is free end, and described free end is through described
Lower plate towards described cam (31).
Isolation knife interlocking operation mechanism the most according to claim 1, it is characterised in that: also pacify on described operation axle II (3)
Equipped with plate (32), being slidably fitted with montant (34) in cabinet (1), one end of montant (34) is installed with and coordinates with plate
Pressing plate (33), the other end of montant (34) reaches the outside of cabinet (1), and the outside of cabinet (1) is provided with pin (35), montant
(34) it is connected by contiguous block is fixing with the upper end of pin (35), in the lower end of pin (35) extend into the casing of chopper and position
Side in breaker open operation plate.
Isolation knife interlocking operation mechanism the most according to claim 2, it is characterised in that: described bearing pin (41) is provided with pin
(43) and the periphery of bearing pin (41) is arranged with coil tension spring (44), one end of described coil tension spring (44) is resisted against described pin
(43), on, the other end of described coil tension spring (44) is resisted against in lower plate.
Isolation knife interlocking operation mechanism the most according to claim 4, it is characterised in that: it is hinged with hand lever on described side plate
(45), described side plate is additionally provided with vertical waist hole, one end of described pin (43) through described vertical waist hole and with described manually
One end of bar (45) is hinged, and the other end of described hand lever (45) reaches the outside of cabinet (1).
Isolation knife interlocking operation mechanism the most according to claim 5, it is characterised in that: one end of described operation axle I (2) leads to
Crossing transmission component and drive isolation knife (8) motion, the other end of described operation axle I (2) has operating head, described cabinet (1)
Panel is provided with the gathering hole corresponding with described operating head, and the side of described gathering hole is slidably fitted with valve.
Isolation knife interlocking operation mechanism the most according to claim 1, it is characterised in that: one end of described operation axle II (3)
Driving earthing (7) to move by linkage, the other end of described operation axle II (3) has swivel joint, described cabinet
(1) panel is provided with the port corresponding with described swivel joint, and the side of described port is slidably fitted with dodge gate.
Isolation knife interlocking operation mechanism the most according to claim 7, it is characterised in that: described linkage includes phase successively
The most hinged the first linked block (51), connecting rod (52), the second linked block (53), described first linked block (51) and described operation axle
II (3) end is fixing to be connected, and described second linked block (53) is fixedly connected with rotating shaft (54), and the upper installation of described rotating shaft (54) is described
Earthing (7), the side of the movable end of described earthing (7) bottom is provided with grounding contact, and described earthing (7) is in described operation
Connect with described grounding contact under the driving of axle II (3).
Isolation knife interlocking operation mechanism the most according to claim 8, it is characterised in that: described isolation knife interlocking operation mechanism
Also include that earthing on/off switch holding means, earthing (7) on/off switch holding means include being arranged on turning of rotating shaft (54) end
Slip cap (62) that arm (61) is connected with connecting lever (61) and the guide post (63) being socketed in slip cap (62), described guide post
(63) being arranged in the axis hole of fixed plate (65), described guide post (63) is arranged with stage clip, one end of described stage clip is with described
Slip cap (62) is fixing to be connected, and the other end of described stage clip is fixed in described fixed plate (65).
Isolation knife interlocking operation mechanism the most according to claim 1, it is characterised in that: described operation axle I (2) and operation
All being arranged with spacing block set on axle II (3), the side of described spacing block set is provided with microswitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620752780.XU CN205881802U (en) | 2016-07-18 | 2016-07-18 | Keep apart sword interlocking operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620752780.XU CN205881802U (en) | 2016-07-18 | 2016-07-18 | Keep apart sword interlocking operating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205881802U true CN205881802U (en) | 2017-01-11 |
Family
ID=57695323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620752780.XU Withdrawn - After Issue CN205881802U (en) | 2016-07-18 | 2016-07-18 | Keep apart sword interlocking operating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205881802U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057567A (en) * | 2016-07-18 | 2016-10-26 | 江苏明及电气股份有限公司 | Isolation knife interlocked operation mechanism |
| CN109859972A (en) * | 2018-12-14 | 2019-06-07 | 北京双杰电气股份有限公司 | Vacuum tank positive locking structure |
| CN109904771A (en) * | 2019-04-01 | 2019-06-18 | 江苏电科电气设备有限公司 | Integral intelligent combined box-type substation |
-
2016
- 2016-07-18 CN CN201620752780.XU patent/CN205881802U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057567A (en) * | 2016-07-18 | 2016-10-26 | 江苏明及电气股份有限公司 | Isolation knife interlocked operation mechanism |
| CN106057567B (en) * | 2016-07-18 | 2017-12-15 | 江苏明及电气股份有限公司 | A kind of isolation knife interlocking operation mechanism |
| CN109859972A (en) * | 2018-12-14 | 2019-06-07 | 北京双杰电气股份有限公司 | Vacuum tank positive locking structure |
| CN109859972B (en) * | 2018-12-14 | 2020-09-11 | 北京双杰电气股份有限公司 | Forced interlocking structure for vacuum cabinet |
| CN109904771A (en) * | 2019-04-01 | 2019-06-18 | 江苏电科电气设备有限公司 | Integral intelligent combined box-type substation |
| CN109904771B (en) * | 2019-04-01 | 2023-10-31 | 江苏电科电气设备有限公司 | Integrated intelligent combined box-type substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170111 Effective date of abandoning: 20171215 |
|
| AV01 | Patent right actively abandoned |