CN106298348B - A kind of three-phase ganged transmission device and high-voltage switch gear - Google Patents
A kind of three-phase ganged transmission device and high-voltage switch gear Download PDFInfo
- Publication number
- CN106298348B CN106298348B CN201610857946.9A CN201610857946A CN106298348B CN 106298348 B CN106298348 B CN 106298348B CN 201610857946 A CN201610857946 A CN 201610857946A CN 106298348 B CN106298348 B CN 106298348B
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- connector
- connecting rod
- rod component
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- component
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000000712 assembly Effects 0.000 claims abstract description 13
- 238000000429 assembly Methods 0.000 claims abstract description 13
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to a kind of three-phase ganged transmission device and high-voltage switch gears, high-voltage switch gear includes threephase switch, threephase switch includes pull rod and connecting lever, it further include three-phase ganged transmission device, three-phase ganged transmission device includes the first connecting rod component and second connecting rod component for being sequentially connected with three connecting levers, the both ends of two link assemblies are equipped with connector, the adjustable in length of two link assemblies, it is respectively equipped on two connectors of first connecting rod component and first, the hinge hole of second connecting lever, one connector of second connecting rod component is equipped with the hinge hole with third connecting lever, the hinge hole with second connecting rod component is additionally provided on connector among first connecting rod component, first, second connecting rod component is conllinear, the hinge joint of first connecting rod component and the second connecting lever is located on the straight line where the first and second link assemblies.The three-phase ganged transmission device and high-voltage switch gear of the present invention, connecting rod occupies little space, the twisting resistance suffered by hinged shaft is small, extends the service life of hinged shaft.
Description
Technical field
The present invention relates to a kind of three-phase ganged transmission devices and high-voltage switch gear that high-voltage switch gear uses.
Background technology
Three-phase high-voltage switchgear includes threephase switch, passes through the same of kinematic link realization switch motion between threephase switch
Step property, specially kinematic link rotate under drive shaft drive, and the connecting lever of threephase switch is hinged on kinematic link, and transmission connects
Three connecting levers are driven to move synchronously when bar moves.In high-tension switch gear transport and installation process, if kinematic link is one
Whole, as depicted in figs. 1 and 2, relative position is unadjustable when being connect with connecting lever due to connecting rod, the manufacturing and fixing error of connecting rod
It can be caused to connect difficulty with connecting lever, thus it is higher to switch parts machining required precision, and because kinematic link can not be split,
If being assembled into a transport after switchgear is connect with kinematic link, transport difficulty and in-site installation difficulty can be increased；If
Kinematic link is made two connecting rods to be hinged mode, as shown in Figure 3 and Figure 4, although the single-phase of switchgear may be implemented
Switch individually transport, to scene after ressemble again, but due to the relative position of two connecting rods and the tie point of three connecting levers
It can not adjust, as the manufacturing and fixing error of connecting rod causes it to connect difficulty with connecting lever, in addition, two when installing at the scene
Root connecting rod connects for mutual overlapping mode, is located at intermediate connecting lever and is between two connecting rods, the axis of two connecting rods is not one
On straight line so that the space shared by connecting rod entirety is larger, but will the company of causing in the case where the installation site of connecting rod is smaller
The degree of difficulty of bar installation, in addition, during transmitting power by link bolt because of two connecting rods, two connecting rods do not cause power coaxially
Arm is larger so that the twisting resistance suffered by link bolt is larger, unfavorable to the service life of link bolt.
The Chinese patent that application notification number is CN104979127A discloses a kind of three-phase ganged transmission dress of high-voltage switch gear
It sets, including first connecting rod component and second connecting rod component, threaded adjusting structure is equipped with to adjust connection rod set on two link assemblies
The length of part, two link assembly both ends are equipped with connector, and two link assemblies are mutually overlapped by respective connector, and by hinged
Bolted splice, connector is equipped with is hinged required hinge hole with three connecting levers, wherein being located at two connection rod sets in intermediate connecting lever
Among part mutually overlapped connector, i.e. mutually overlapped that connector is located at centre in the radial direction in connecting rod for two link assemblies
The both sides of connecting lever, and connected by a link bolt, after connecting lever is connect with connecting rod, the hinge joint of three connecting levers and connecting rod is located at
On same straight line.
The transmission device solves the problems, such as that relative position is unadjustable between kinematic link and the hinge joint of connecting lever, and makes
It obtains convenient transportation, save cost, but there is also following disadvantages：The both sides of intermediate connecting lever are located at when two connection rod set overlap joints,
So that two connecting rods are not coaxial, kinematic link is caused integrally to be taken up too much space, is made when connecting lever is closer with single-phase switch distance
It is difficult to install at kinematic link；It also will increase between two connecting rods in link bolt power transmittance process in addition, two connecting rods are not coaxial
The arm of force, cause the twisting resistance suffered by link bolt larger, to reduce the service life of link bolt.
Invention content
The purpose of the present invention is to provide a kind of three-phase ganged transmission device, to solve between connecting rod not point-blank
And kinematic link is caused to take up too much space with link bolt by the larger technical problem of twisting resistance.
To achieve the above object, a kind of technical solution of three-phase ganged transmission device of the present invention is：A kind of three-phase ganged biography
Dynamic device, including it is sequentially connected with the first connecting rod component and second connecting rod component of three connecting levers, the both ends of two link assemblies are all provided with
There are connector, the length of two link assemblies that can adjust, is respectively provided on two connectors of the first connecting rod component and the
One, the hinged hinge hole of the second connecting lever, one of described second connecting rod component connector are equipped with for being cut with scissors with third connecting lever
The hinge hole connect is additionally provided with and second connecting rod member hinges on the connector of the close second connecting rod component of the first connecting rod component
Hinge hole, first connecting rod component and second connecting rod component are conllinear, and the hinge joint of first connecting rod component and the second connecting lever is located at the
On straight line where one link assembly and second connecting rod component.Three-phase ganged transmission device using the present invention, first, second connects
Bar assembly is coaxially connected, not only save two connecting rods it is not coaxial when occupy limited space inside high-tension switch gear and ask
Topic, and it is coaxially connected after, articulated shaft is relatively short between two connecting rods, wherein power is conducted to separately by a connecting rod by articulated shaft
When a piece connecting rod, the twisting resistance smaller suffered by articulated shaft, this just extends the service life of articulated shaft, reduces maintenance cost.
Further, the connector includes the first connector and the second connector positioned at first connecting rod component both ends, Yi Jiwei
Third connector and the 4th connector in second connecting rod group both ends, the first connector, the second connector and the 4th connector have for connecting lever
The U-shaped link slot that connecting pin is inserted into, the hinge hole are located at U-shaped link slot and penetrate through two wall up and down of U-shaped link slot, third
Connector stretches out the inside of one end insertion U-shaped link slot of second connecting rod component end.Inserting for two connectors is realized using U-shaped link slot
Connect so that two connecting rods can be coaxially connected, by the articulated shaft of connecting lever and the second connector or third connector and second, third connect
Connection hinged shaft between head is provided separately so that ensures that three connecting levers are generally aligned in the same plane on the basis of two connecting rods are coaxially connected
It is interior, and two connecting rods and three connecting levers can be in same plane, and biggerization saves space.
Further, the first connecting rod component and/or second connecting rod component are adjusted by threaded adjusting structure from height
Degree.Between two connecting rods and four connectors threaded adjusting structure there are the distance between the hinge hole at adjustable link both ends,
It is adjusted when so as to there is manufacture, installation error between hinge hole.
Further, the threaded adjusting structure includes double end adjusting screw rod and is located at the locking at double end adjusting screw rod both ends
Nut.Can very easily adjust the distance between hinge hole by double end adjusting screw rod, after adjusting with locking nut to its into
Row is fixed, and ensures that no longer dislocation changes.
The present invention also aims to provide a kind of high-voltage switch gear using three-phase ganged transmission device of the present invention.
The technical solution of high-voltage switch gear of the present invention is：High-voltage switch gear, including threephase switch, threephase switch include that control switchs
Three pull rods of action and three connecting levers being connected with pull rod further include the three-phase ganged transmission for driving three connecting lever synchronization actions
Device, three-phase ganged transmission device include the first connecting rod component and second connecting rod component for being sequentially connected with three connecting levers, two connecting rods
The both ends of component are equipped with connector, and the length of two link assemblies can be adjusted, and divide on two connectors of the first connecting rod component
It She You not be equipped with and use for the hinge hole hinged with the first, second connecting lever, one of described second connecting rod component connector
In being additionally provided on the hinge hole hinged with third connecting lever, the connector of the close second connecting rod component of the first connecting rod component and the
The hinged hinge hole of two link assemblies, first connecting rod component and second connecting rod component are conllinear, first connecting rod component and the second connecting lever
Hinge joint be located on the straight line where first connecting rod component and second connecting rod component.High-voltage switch gear using the present invention, passes through
Three-phase ganged transmission device drives the connecting lever synchronization action of three-phase, and the first, second connecting rod is coaxially connected, not only saves two
When connecting rod is not coaxial occupy high-tension switch gear inside limited space the problem of, and it is coaxially connected after, cut with scissors between two connecting rods
Spindle is relatively short, wherein when power is conducted to another connecting rod by a connecting rod by articulated shaft, the twisting resistance suffered by articulated shaft
Smaller, this just extends the service life of articulated shaft, reduces maintenance cost.
Further, the connector includes the first connector and the second connector positioned at first connecting rod component both ends, Yi Jiwei
Third connector and the 4th connector in second connecting rod group both ends, the first connector, the second connector and the 4th connector have for connecting lever
The U-shaped link slot that connecting pin is inserted into, the hinge hole are located at U-shaped link slot and penetrate through two wall up and down of U-shaped link slot, third
Connector stretches out the inside of one end insertion U-shaped link slot of second connecting rod component end.Inserting for two connectors is realized using U-shaped link slot
Connect so that two connecting rods can be coaxially connected, by the articulated shaft of connecting lever and the second connector or third connector and second, third connect
Connection hinged shaft between head is provided separately so that ensures that three connecting levers are generally aligned in the same plane on the basis of two connecting rods are coaxially connected
It is interior, and two connecting rods and three connecting levers can be in same plane, and biggerization saves space.
Further, the first connecting rod component and/or second connecting rod component are adjusted by threaded adjusting structure from height
Degree.Between two connecting rods and four connectors threaded adjusting structure there are the distance between the hinge hole at adjustable link both ends,
It is adjusted when so as to there is manufacture, installation error between hinge hole.
Further, the threaded adjusting structure includes double end adjusting screw rod and is located at the locking at double end adjusting screw rod both ends
Nut.Can very easily adjust the distance between hinge hole by double end adjusting screw rod, after adjusting with locking nut to its into
Row is fixed, and ensures that no longer dislocation changes.
Description of the drawings
Fig. 1 is the transmission device schematic diagram of a traditional connecting rod；
Fig. 2 is the upward view of Fig. 1；
Fig. 3 is the transmission device schematic diagram of traditional two unadjustable connections of connecting rod；
Fig. 4 is the upward view of Fig. 3；
Fig. 5 is three-phase ganged transmission device of the present invention and the specific embodiment structural schematic diagram after connecting lever assembly；
Fig. 6 is the vertical view of Fig. 5；
Fig. 7 is the partial enlarged view at the A of Fig. 6；
Fig. 8 is structural schematic diagram when three-phase ganged transmission device of the present invention individually assembles in Fig. 5；
Fig. 9 is the sectional view at B-B in Fig. 8；
Figure 10 is second coaxial embodiment of three-phase ganged transmission device connecting rod of the present invention；
Figure 11 is the coaxial third embodiment of three-phase ganged transmission device connecting rod of the present invention；
Figure 12 is second embodiment that connecting rod is coaxial in high-voltage switch gear of the present invention；
In figure：1- connecting rods, 11- first connecting rods, 12- second connecting rods, 2- connecting levers, the first connectors of 31-, the second connectors of 32-,
33- third connectors, the 4th connectors of 34-, 4- double end adjusting screw rods, 5- link bolts, 6- plain radial bearings, 7- check washers.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of the high-voltage switch gear of the present invention, the threephase switch of high-voltage switch gear includes disconnecting switch, earthing switch
And high speed grounding switch, threephase switch drive moving contact to complete switch switching on and off and act by pull rod, 1 lower end of connecting rod is all connected with
There are connecting lever 2, connecting lever 2 to be driven by three-phase ganged transmission device, synchronously completes switch motion.
As shown in Figures 5 to 9, three-phase ganged transmission device includes connecting rod 1, connector, double end adjusting screw rod 4 and hinged group
Part.The second connecting rod 12 of the first connecting rod 11 and right side of connecting rod 1 including left side, connector respectively include the first connector 31, second connect
First 32, third connector 33 and the 4th connector 34.
11 both ends of first connecting rod are threadedly coupled by double end adjusting screw rod 4 with the first connector 31 and the second connector 32 respectively,
12 left end of second connecting rod is threadedly coupled with third connector 33, and right end is threadedly coupled by double end adjusting screw rod 4 with the 4th connector 34,
It is equipped with locking nut between above-mentioned connecting rod and connector, connecting rod and double end adjusting screw rod 4 and double end adjusting screw rod 4 and connector, with
Connecting rod to adjusting good position is fixed.In other embodiments, one is only selected in any both ends in two connecting rods
It is adjusted using double end adjusting screw rod 4 and locking nut, setting double end at one can also be only selected in four ends of two connecting rods
Adjusting screw rod 4 and locking nut are adjusted.
It is equipped with U-shaped link slot on first connector 31, the second connector 32 and the 4th connector 34, for the connection for connecting lever 2
End is inserted into, in order to realize the coaxial of first connecting rod 11 and second connecting rod 12, in other embodiments, the U-shaped of the second connector 32
Link slot may also be arranged on third connector 33, and corresponding second connector 32 can be inserted into the U-shaped link slot of third connector 33, and two
Person is hinged by link bolt；Structure as shown in Figure 10 can also be used to ensure that two connecting rods are coaxial, specifically in joint
One piece is cut, ensures that the axis of two connectors splicing back link is located on straight line；In order to ensure that connecting rod is coaxial, can also be used attached
Connecting lever 2 is still located at centre, but protected by structure shown in Figure 11, the mode of U-shaped link slot and the socket of another U-shaped link slot
It has demonstrate,proved connecting lever 2 and the articulated shaft of the articulated shaft and two connectors of connector is coaxial.
U-shaped link slot is divided into two side up and down, and the connecting hole of perforation is provided on two side, which is used for for hinged spiral shell
Bolt 5 is passed through to fix connecting lever 2, and 2 connecting pin of connecting lever is located inside U-shaped link slot when installation, in other embodiments, such as attached drawing 10
It is shown, coordinate the improvement of connector, connecting lever 2 to could be secured at the side side of connector.
Three connecting levers 2 of high-voltage switch gear are respectively hinged at first, second and the 4th U-shaped link slot on connector, wherein
Articulated shaft when intermediate connecting lever 2 is connect with the articulated shaft of the second connector 32 and the second connector 32 with third connector 33, two
Articulated shaft or so is distributed on the length direction of connecting rod 1, so that on the basis of two connecting rods 1 are coaxially connected, ensures three connecting levers
In same plane.
As shown in Figure 2 and Figure 9, hinged place is equal between connecting lever 2 and three connectors and the second connector 32 and third connector 33
Using plain radial bearing 6, to reduce switching devices and ground installation accuracy.Using anti-at all hinged link bolts
Loose gasket 7, loosens to avoid nut.
The high-voltage switch gear of the present invention is during the entire process of use：When transport, by parts such as threephase switch, two connecting rods
Dispersion transport saves transportation cost to mitigate the degree of difficulty of whole Transporting after three-phase is mounted on transmission device；Assembly
When, connecting rod and connector etc. are assembled in advance according to design size in infield, after switchgear and ground fix,
It is adjusted while installing by double end adjusting screw rod 4, it is suitable later by locking nut screwing to adjust and connect, and fixes connecting rod
It no longer moves, ensures that the distance between three hinge holes are constant.
Except the connecting lever 2 of high-voltage switch gear of the present invention shown in attached drawing 12 uses U-shaped connecting groove structure, ensure connecting lever 2 and connector
Articulated shaft and two connector articulated shafts are coaxially outer, the high pressure of the specific embodiment and the present invention of three-phase ganged transmission device of the invention
Each specific embodiment for switching the three-phase ganged transmission device in each specific embodiment is identical, and details are not described herein again.
Claims (4)
1. a kind of three-phase ganged transmission device, including it is sequentially connected with the first connecting rod component and second connecting rod component of three connecting levers,
The both ends of two link assemblies are equipped with connector, and the length of two link assemblies can be adjusted, it is characterised in that：The first connecting rod group
The hinge hole hinged with the first, second connecting lever is respectively provided on two connectors of part, the second connecting rod component is wherein
One connector is equipped with for the hinge hole hinged with third connecting lever, the close second connecting rod component of the first connecting rod component
The hinge hole with second connecting rod member hinges is additionally provided on connector, first connecting rod component and second connecting rod component are conllinear, and first connects
The hinge joint of bar assembly and the second connecting lever is located on the straight line where first connecting rod component and second connecting rod component；Three-phase ganged passes
Dynamic device includes connecting rod, connector, double end adjusting screw rod and hinge assembly, connecting rod include left side first connecting rod and right side the
Two connecting rods, connector include the first connector, the second connector, third connector and the 4th connector；The double end adjusting screw rod includes connection
Second double end of the first double end adjusting screw rod of the first connector and first connecting rod, connection first connecting rod and the second connector adjusts spiral shell
Bar, the third double end adjusting screw rod for connecting second connecting rod and the 4th connector；The connecting lever includes first connect with the first connector
Connecting lever, the second connecting lever being connect with the second connector, the third connecting lever being connect with the 4th connector；The first connecting rod component includes the
One connector, the first double end adjusting screw rod, first connecting rod, the second double end adjusting screw rod, the second connector；The second connecting rod component packet
Include third connector, second connecting rod, third double end adjusting screw rod, the 4th connector；The first connecting rod component and second connecting rod component
Length is adjusted by threaded adjusting structure；The threaded adjusting structure includes that double end adjusting screw rod adjusts spiral shell with double end is located at
The locking nut at bar both ends.
2. three-phase ganged transmission device according to claim 1, it is characterised in that：The connector includes being located at first connecting rod
First connector and the second connector at component both ends, and third connector and the 4th connector positioned at second connecting rod group both ends, first
There is the U-shaped link slot that the connecting pin for connecting lever is inserted into, the hinge hole to be located at U-shaped company for connector, the second connector and the 4th connector
At access slot and two wall up and down of U-shaped link slot is penetrated through, U-shaped connection is inserted into one end that third connector stretches out second connecting rod component end
The inside of slot.
3. high-voltage switch gear, including threephase switch, threephase switch includes controlling three pull rods of switch motion and being connected with pull rod
Three connecting levers further include the three-phase ganged transmission device for driving three connecting lever synchronization actions, and three-phase ganged transmission device includes suitable
The first connecting rod component and second connecting rod component of three connecting levers of secondary connection, the both ends of two link assemblies are equipped with connector, two connecting rods
The length of component can be adjusted, it is characterised in that：Be respectively provided on two connectors of the first connecting rod component with first,
The hinged hinge hole of second connecting lever, one of described second connecting rod component connector are equipped with for hinged with third connecting lever
Hinge hole is additionally provided with the hinge with second connecting rod member hinges on the connector of the close second connecting rod component of the first connecting rod component
Hole is connect, first connecting rod component and second connecting rod component are conllinear, and the hinge joint of first connecting rod component and the second connecting lever is located at first and connects
On straight line where bar assembly and second connecting rod component；Three-phase ganged transmission device include connecting rod, connector, double end adjusting screw rod with
And hinge assembly, connecting rod include left side first connecting rod and right side second connecting rod, connector include the first connector, the second connector,
Third connector and the 4th connector；The double end adjusting screw rod includes the first double end adjusting spiral shell for connecting the first connector and first connecting rod
Bar, connection first connecting rod with the second double end adjusting screw rod of the second connector, connect the third double end of second connecting rod and the 4th connector
Adjusting screw rod；The connecting lever includes the first connecting lever being connect with the first connector, the second connecting lever being connect with the second connector and the 4th
The third connecting lever of connector connection；The first connecting rod component includes the first connector, the first double end adjusting screw rod, first connecting rod, the
Two double end adjusting screw rods, the second connector；The second connecting rod component includes third connector, second connecting rod, third double end adjusting spiral shell
Bar, the 4th connector；The first connecting rod component and second connecting rod component adjust length by threaded adjusting structure；The spiral shell
Line adjustment structure includes double end adjusting screw rod and is located at the locking nut at double end adjusting screw rod both ends.
4. high-voltage switch gear according to claim 3, it is characterised in that：The connector includes being located at first connecting rod component both ends
The first connector and the second connector, and third connector and the 4th connector positioned at second connecting rod group both ends, the first connector, second
There is the U-shaped link slot that the connecting pin for connecting lever is inserted into, the hinge hole to be located at U-shaped link slot and pass through for connector and the 4th connector
Two wall up and down of logical U-shaped link slot, third connector stretch out the inside of one end insertion U-shaped link slot of second connecting rod component end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610857946.9A CN106298348B (en) | 2016-09-28 | 2016-09-28 | A kind of three-phase ganged transmission device and high-voltage switch gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610857946.9A CN106298348B (en) | 2016-09-28 | 2016-09-28 | A kind of three-phase ganged transmission device and high-voltage switch gear |
Publications (2)
| Publication Number | Publication Date |
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| CN106298348A CN106298348A (en) | 2017-01-04 |
| CN106298348B true CN106298348B (en) | 2018-08-21 |
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| CN201610857946.9A Active CN106298348B (en) | 2016-09-28 | 2016-09-28 | A kind of three-phase ganged transmission device and high-voltage switch gear |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376627B (en) * | 2017-09-22 | 2020-01-07 | 平高集团有限公司 | Three-phase transmission mechanism and circuit breaker using same |
| CN112735897B (en) * | 2020-12-14 | 2024-03-29 | 河南平高电气股份有限公司 | Grounding switch and interphase coupling device thereof |
| CN114664581B (en) * | 2021-12-24 | 2023-09-29 | 河南平高通用电气有限公司 | Driving connecting rod assembly of outdoor three-position switch and outdoor three-position switch |
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| CN201663092U (en) * | 2010-02-04 | 2010-12-01 | 宁波华通电器集团股份有限公司 | Interphase connecting rods of self-energy high-voltage sulphur hexafluoride circuit breaker |
| CN102931022A (en) * | 2012-11-13 | 2013-02-13 | 上海思源高压开关有限公司 | Three-phase mechanical link connecting mechanism of breaker |
| CN203799892U (en) * | 2014-01-26 | 2014-08-27 | 广州白云电器设备股份有限公司 | Isolation switch electric-control device for high-voltage fixed cabinets |
| CN104979127A (en) * | 2015-06-26 | 2015-10-14 | 中国西电电气股份有限公司 | Three-phase linked transmission device of high-voltage switch |
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2016
- 2016-09-28 CN CN201610857946.9A patent/CN106298348B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201663092U (en) * | 2010-02-04 | 2010-12-01 | 宁波华通电器集团股份有限公司 | Interphase connecting rods of self-energy high-voltage sulphur hexafluoride circuit breaker |
| CN102931022A (en) * | 2012-11-13 | 2013-02-13 | 上海思源高压开关有限公司 | Three-phase mechanical link connecting mechanism of breaker |
| CN203799892U (en) * | 2014-01-26 | 2014-08-27 | 广州白云电器设备股份有限公司 | Isolation switch electric-control device for high-voltage fixed cabinets |
| CN104979127A (en) * | 2015-06-26 | 2015-10-14 | 中国西电电气股份有限公司 | Three-phase linked transmission device of high-voltage switch |
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| CN106298348A (en) | 2017-01-04 |
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