CN204243583U - A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply - Google Patents
A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply Download PDFInfo
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- CN204243583U CN204243583U CN201420742272.4U CN201420742272U CN204243583U CN 204243583 U CN204243583 U CN 204243583U CN 201420742272 U CN201420742272 U CN 201420742272U CN 204243583 U CN204243583 U CN 204243583U
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Abstract
The utility model discloses a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply, comprise chassis vehicle, the first circuit breaker and the second circuit breaker, this first circuit breaker and the second circuit breaker are all integrated on this chassis vehicle, achieve the integration of two circuit breaker carts in prior art, during assembling, this first circuit breaker and the second circuit breaker well can be arranged in switch cubicle at factory's assembling and setting again, industrialization degree is high, convenient for installation and maintenance; Be provided with the first mechanical interlock mechanism and the first electrical interlocking mechanism between this first circuit breaker and second circuit breaker, guarantee that two circuit breakers only have a combined floodgate, there is machinery and the protection of electric dual interlock, avoid reverse power transmission, safe and reliable; This chassis vehicle and be provided with the second mechanical interlock mechanism between this first circuit breaker and the second circuit breaker, guarantees that this circuit breaker only could close a floodgate when test position or service position, has machinery and electric double protection, safe and reliable.
Description
Technical field
The utility model relates to the circuit breaker cart in switch cubicle, particularly relates to a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply.
Background technology
Only have electrical interlock between two indoor high-voltage vacuum circuit breakers of the middle pressure Dual-power automatic switching of prior art, there is electrical interlock contact failure and two circuit breakers all close a floodgate time, from generator side to grid transmission, cause the defect of electric network fault.Secondly two circuit breakers of prior art are installed on two chassis vehicles respectively, need install respectively and debug during installation, install and comparatively bother.Therefore have impact on the extensive use of middle pressure automatic transfer switch.
Utility model content
The utility model provides a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply, and the circuit breaker cart which overcoming the prior art described in background technology installs trouble, uses unsafe shortcoming.
The technical scheme adopted that the utility model solves its technical problem is:
A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply, comprise chassis vehicle, for being electrically connected the first circuit breaker of mains supply and the second circuit breaker for being electrically connected generator power supply, this first circuit breaker and the second circuit breaker are all integrated on this chassis vehicle, are provided with the first mechanical interlock mechanism between this first circuit breaker and second circuit breaker.
Among one embodiment: this chassis vehicle and be provided with the second mechanical interlock mechanism between this first circuit breaker and the second circuit breaker.
Among one embodiment: this first mechanical interlock mechanism comprises:
Interlocking post, pin, the first elastic component and locating collar seat, this interlocking post offers a long lumbar hole, this locating collar seat offers a pin-and-hole, this pin makes axial relative sliding along this interlocking post of this interlocking post and this locating collar seat through this pin-and-hole and long lumbar hole, this interlocking post branches out the first interlocking and divides post and the second interlocking point post to its axial both sides, the lower end of this interlocking post connects this first elastic component;
First rotating shaft and the first cam, this the first rotating shaft connects the operation axis of the first circuit breaker, and this first cam is installed in this first rotating shaft, and the outer surface of revolution of this first cam is provided with the first groove, when this first circuit breaker is in gate-dividing state, the opening surface of this first groove is to this first interlocking point post;
Second rotating shaft and the second cam, this the second rotating shaft connects the operation axis of the second circuit breaker, and this second cam is installed in this second rotating shaft, and the outer surface of revolution of this second cam is provided with the second groove, when this second circuit breaker is in gate-dividing state, the opening surface of this second groove is to this second interlocking point post.
Among one embodiment: this second mechanical interlock mechanism comprises turnover panel, connecting lever plate, connecting plate and top board, this turnover panel is established on a chassis, turnover panel is provided with the second elastic component, this connecting lever plate is rotatably connected on this chassis vehicle, one end of this connecting lever plate is rotationally connected this turnover panel, the other end is rotationally connected one end of this connecting plate, and the other end of this connecting plate is rotationally connected this top board, and this top board can impel the operation axis locking of this first circuit breaker and the second circuit breaker.
Among one embodiment: this second mechanical interlock mechanism also comprises the 3rd cam and top pressure unit, 3rd cam is installed in this second rotating shaft, this top pressure unit is positioned at the below of the 3rd cam and connects this turnover panel, when this circuit breaker is in test position or service position, this turnover panel is positioned at below this interlocking post.
Among one embodiment: this top pressure unit comprises push rod, the 3rd elastic component and pressing plate, and the 3rd elastic component connects this push rod lower end, and this push rod lower end contact can connect this pressing plate, the affixed turnover panel of this pressing plate.
Among one embodiment: this turnover panel is rotationally connected by a keyset and this connecting lever plate, and one end of this keyset is fixedly connected with this turnover panel, and the other end is rotationally connected this connecting lever plate.
Among one embodiment: also there is between this first circuit breaker and second circuit breaker the first electrical interlock unit.
Among one embodiment: this chassis vehicle and between this first circuit breaker and the second circuit breaker, there is the second electrical interlock unit.
Among one embodiment: this first electrical interlock unit is that the auxiliary switch contact of this first circuit breaker and the second circuit breaker is to the mutual exclusive circuit structure each other between shutting-brake control loop.
Among one embodiment: this second electrical interlock unit is that the travel switch auxiliary contact of test position and service position on this chassis vehicle are to the exclusive circuit structure in the shutting-brake control loop of this first circuit breaker and the second circuit breaker.
Among one embodiment: this first circuit breaker and the second circuit breaker are fixed on a chassis side by side.
The technical program is compared with background technology, and its tool has the following advantages:
A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply, comprise chassis vehicle, for being electrically connected the first circuit breaker of mains supply and the second circuit breaker for being electrically connected generator power supply, this first circuit breaker and the second circuit breaker are all integrated on this chassis vehicle, achieve the integration of two circuit breaker carts in prior art, during assembling, this first circuit breaker and the second circuit breaker well can be arranged in switch cubicle at factory's assembling and setting again, industrialization degree is high, convenient for installation and maintenance; Be provided with the first mechanical interlock mechanism and the first electrical interlocking mechanism between this first circuit breaker and second circuit breaker, guarantee that two circuit breakers only have a combined floodgate, there is machinery and the protection of electric dual interlock, avoid reverse power transmission, safe and reliable; This chassis vehicle and be provided with the second mechanical interlock mechanism between this first circuit breaker and the second circuit breaker, guarantees that this circuit breaker only could close a floodgate when test position or service position, has machinery and electric double protection, safe and reliable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 depicts overall structure stereogram of the present utility model.
Fig. 2 depicts one of internal structure stereogram of the present utility model.
Fig. 3 depicts internal structure stereogram two of the present utility model.
Embodiment
Please refer to Fig. 1 to Fig. 3, a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply, in one preferred embodiment, this vacuum circuit-breaker handcart is used in the switching of 12kV duplicate supply, it comprises chassis vehicle 10, for being electrically connected the first circuit breaker 20 of mains supply and the second circuit breaker 30 for being electrically connected generator power supply, this first circuit breaker 20 and the second circuit breaker 30 are all integrated on this chassis vehicle 10, in the present embodiment, this first circuit breaker 20 and the second circuit breaker about 30 are fixed on chassis vehicle 10 side by side.The first mechanical interlock mechanism and the first electrical interlock unit is provided with, this chassis vehicle and be provided with the second mechanical interlock mechanism and the second electrical interlock unit between this first circuit breaker and the second circuit breaker between this first circuit breaker and second circuit breaker.
This first mechanical interlock mechanism comprises: interlocking post 11, pin 12, first elastic component (not shown) and locating collar seat 13, this interlocking post 11 offers a long lumbar hole (not shown), this locating collar seat 13 offers a pin-and-hole, this pin 12 makes axial relative sliding along this interlocking post 11 of this interlocking post 11 and this locating collar seat 13 through this pin-and-hole and long lumbar hole, but this interlocking post 11 can not rotate, this interlocking post 11 branches out the first interlocking one on the other and divides post 111 and the second interlocking point post 112 to its axial both sides, the lower end of this interlocking post 11 connects this first elastic component, in the present embodiment, this first elastic component is a stage clip,
This first mechanical interlock mechanism also comprises the first rotating shaft 14, first cam 15, second rotating shaft 16 and the second cam 17, this first rotating shaft 14 is rotationally connected the operation axis of the first circuit breaker 20, this first cam 15 is installed in this first rotating shaft 14, the outer surface of revolution of this first cam 15 is provided with the first groove, when this first circuit breaker 20 is in gate-dividing state, the opening surface of this first groove is to this first interlocking point post 111 and this first interlocking divides post 111 to be positioned at the below of this first cam 15; This second rotating shaft 16 is rotationally connected the operation axis of the second circuit breaker 30, this second cam 17 is installed in this second rotating shaft 16, the outer surface of revolution of this second cam 17 is provided with the second groove, when this second circuit breaker 30 is in gate-dividing state, the opening surface of this second groove is to this second interlocking point post 112 and this second interlocking divides post 112 to be positioned at the top of this second cam 17.
This second mechanical interlock mechanism comprises turnover panel 21, connecting lever plate 22, connecting plate 23 and top board 24, and this turnover panel 21 is located on chassis vehicle 10, and turnover panel 21 is provided with the second elastic component (not shown), and in the present embodiment, this second elastic component is a torsion spring.This connecting lever plate 22 is rotatably connected on this chassis vehicle 10, one end of this connecting lever plate 22 is rotationally connected this turnover panel 21, the other end is rotationally connected one end of this connecting plate 23, the other end of this connecting plate 23 is rotationally connected this top board 24, and this top board 24 can impel the operation axis locking of this first circuit breaker 20 and the second circuit breaker 30.In the present embodiment: this turnover panel 21 is rotationally connected with this connecting lever plate 22 by a keyset 25, and one end of this keyset 25 is fixedly connected with this turnover panel 21, and the other end is rotationally connected this connecting lever plate 22.Particularly, this second mechanical interlock mechanism comprises two connecting lever plates 22, two connecting plates 23, two top boards 24, the middle part of this two connecting levers plate 22 to be articulated in respectively on this chassis vehicle 10 and with in the middle part of this pivot joint for rotating fulcrum, each one end of this two connecting levers plate 22 and one end of this keyset 25 are hinged, each other end of this two connecting levers plate 22 is hinged with each one end of this two connecting plate 23 respectively, and each other end difference this two top board 24 hinged of this two connecting plate 23 is also by driving the operation axis of this two top board 24 difference this first circuit breaker 20 of locking and the second short-circuiting device 30.
This second mechanical interlock mechanism also comprises the 3rd cam 26 and top pressure unit 27,3rd cam 26 is installed in this second rotating shaft 16, this top pressure unit 27 is positioned at the below of the 3rd cam 26 and connects this turnover panel 21, when chassis vehicle 10 is in test position or service position, this turnover panel 21 is positioned at below this interlocking post 11.In the present embodiment, this top pressure unit 27 comprises push rod 271, the 3rd elastic component 272 and pressing plate 273,3rd elastic component 272 connects this push rod 271 lower end, this push rod 271 lower end contact can connect this pressing plate 273, the affixed turnover panel 21 of this pressing plate 273, in the present embodiment, the 3rd elastic component 272 is a stage clip.
This first electrical interlock unit is that the auxiliary switch contact of this first circuit breaker and the second circuit breaker is to the mutual exclusive circuit structure each other between shutting-brake control loop; Namely, when this first breaker closing, the shutting-brake control loop of cut-out second circuit breaker makes this second circuit breaker not close a floodgate by the auxiliary switch contact of this first circuit breaker, in like manner, when this second breaker closing, the shutting-brake control loop of cut-out first circuit breaker makes this first circuit breaker not close a floodgate by the auxiliary switch contact of this second circuit breaker.This the second electrical interlock unit is that the travel switch auxiliary contact of test position and service position on this chassis vehicle are to the exclusive circuit structure in the shutting-brake control loop of the first circuit breaker and the second circuit breaker, namely, when this chassis vehicle is positioned at test position and service position, travel switch auxiliary contact on this chassis vehicle will allow the shutting-brake control loop conducting of this first circuit breaker and the second circuit breaker and control it to close a floodgate, when this chassis vehicle leaves test position and service position, the shutting-brake control loop of disconnection first circuit breaker and the second circuit breaker makes it not close a floodgate by the travel switch auxiliary contact on this chassis vehicle.
The operational mode of a kind of vacuum circuit-breaker handcart for middle pressure duplicate supply switching described in the utility model is as follows:
Mechanical interlocking between first circuit breaker and the second circuit breaker, as shown in Figure 2, first circuit breaker 20 and the second circuit breaker 30 are all in gate-dividing state, if the first circuit breaker 20 closes a floodgate, its operation axis rotates, the first rotating shaft 14 is driven to rotate, thus drive the first cam 15 be installed in this first rotating shaft 14 to rotate, first of this first cam 15 pressure interlocking post 11 is interlocked to divide post 111 and drive this second interlocking point post 112 to press down and is dropped in the second groove of this second cam 17, meanwhile be connected to the first elastic component compressed energy-storage of this interlocking post 11 lower end and the cylindrical contact of the first cam 15 on this first interlocking point post 111, make the operation axis of the second circuit breaker 30 can not rotate (because interlocking post can only slide axially along it, can not rotate), namely the second circuit breaker 30 can not close a floodgate.When this first circuit breaker 20 separating brake, when this first cam 15 returns back to this first groove surface to this first interlocking point post 111, this first elastic component release can, the lifting of interlocking post 11, the second groove deviate from by a second interlocking point post 112, now allows this second circuit breaker 30 to close a floodgate.If the second breaker closing, its operation axis rotates, the second rotating shaft 16 is driven to rotate, thus drive the second cam 17 be installed in this second rotating shaft 16 to rotate, this second cam 17 upwards lift interlocking post 11 the second interlocking point post 112 and drive this first interlocking point post 111 to rise and to fall in the first groove of this first cam 15 and the cylindrical contact of the second cam 17 on this second interlocking point post 112, the operation axis of the first circuit breaker 20 can not be rotated, and namely the first circuit breaker 20 can not close a floodgate.When this second circuit breaker 30 separating brake, when the second cam 17 returns back to this second groove surface to this second interlocking point post 112, this interlocking post 11 falls after rise under gravity, and the first groove deviate from by this first interlocking point post 111, now allows the first circuit breaker 20 to close a floodgate.So, the first circuit breaker 20 is realized by this first mechanical interlock mechanism and the second circuit breaker 30 can only have a combined floodgate.
This first circuit breaker and the mechanical interlocking between the second circuit breaker and chassis vehicle need two aspects to interlock, and one is only have chassis vehicle when test position or service position, and this first circuit breaker and the second circuit breaker could close a floodgate; Two is that after the first circuit breaker or the second breaker closing, chassis vehicle can not move.
Chassis vehicle is when test position or service position, this first circuit breaker and the second circuit breaker could close a floodgate, as shown in Figure 3, turnover panel 21 on chassis vehicle is when test position or service position, the position near chassis vehicle screw mandrel can be forced into, once leave test position or service position, turnover panel 21 is upwards dug under the effect of the second elastic component, the keyset 25 be fixed on turnover panel 21 is driven to move upward, keyset 25 rotates and drives one end of connecting lever plate 22 to move upward, now the rotating fulcrum of connecting lever plate 22 on chassis vehicle rotates, the other end of connecting lever plate 22 rotates and drives connecting plate 23 to move, connecting plate 23 rotates and drives top board 24 upwards to rotate, make the operation axis of mechanism's locking first circuit breaker in circuit breaker and the second circuit breaker, first circuit breaker and the second circuit breaker can not close a floodgate.
After this first circuit breaker and the second breaker closing, chassis vehicle can not move, as shown in Figure 2, if the first circuit breaker 20 closes a floodgate, this first rotating shaft 14 is rotated, and drives the first cam 15 to rotate, and the first cam 15 depresses interlocking post 11, the turnover panel 21 on chassis vehicle 10 pressed by interlocking post 11 downwards top, and chassis vehicle 10 can not be moved.When after this first circuit breaker 20 separating brake, this interlocking post 11 is the upwards top pressure effect of lifting releasing to turnover panel 21 under the restoring force effect of the first elastic component.If the second circuit breaker 30 closes a floodgate, the second rotating shaft 16 is rotated, and drives the 3rd cam 26 be installed in the second rotating shaft 16 rotate and depress push rod 271, and push rod 271 moves downward and pushes up pressure pressing plate 273 and turnover panel 21, and chassis vehicle 10 can not be moved.When after this second circuit breaker 30 separating brake, this push rod 271 the 3rd elastic component 272 restoring force effect upwards lifting remove the effect that the top of turnover panel 21 is pressed.
The above, be only the utility model preferred embodiment, therefore the scope that the utility model implements can not be limited according to this, the equivalence namely done according to the utility model the scope of the claims and description change with modify, all should still belong in scope that the utility model contains.
Claims (12)
1. the vacuum circuit-breaker handcart switched for middle pressure duplicate supply, comprise chassis vehicle, for being electrically connected the first circuit breaker of mains supply and the second circuit breaker for being electrically connected generator power supply, it is characterized in that: this first circuit breaker and the second circuit breaker are all integrated on this chassis vehicle, between this first circuit breaker and second circuit breaker, be provided with the first mechanical interlock mechanism.
2. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 1, is characterized in that: this chassis vehicle and be provided with the second mechanical interlock mechanism between this first circuit breaker and the second circuit breaker.
3. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 2, is characterized in that: this first mechanical interlock mechanism comprises:
Interlocking post, pin, the first elastic component and locating collar seat, this interlocking post offers a long lumbar hole, this locating collar seat offers a pin-and-hole, this pin makes axial relative sliding along this interlocking post of this interlocking post and this locating collar seat through this pin-and-hole and long lumbar hole, this interlocking post branches out the first interlocking and divides post and the second interlocking point post to its axial both sides, the lower end of this interlocking post connects this first elastic component;
First rotating shaft and the first cam, this the first rotating shaft connects the operation axis of the first circuit breaker, and this first cam is installed in this first rotating shaft, and the outer surface of revolution of this first cam is provided with the first groove, when this first circuit breaker is in gate-dividing state, the opening surface of this first groove is to this first interlocking point post;
Second rotating shaft and the second cam, this the second rotating shaft connects the operation axis of the second circuit breaker, and this second cam is installed in this second rotating shaft, and the outer surface of revolution of this second cam is provided with the second groove, when this second circuit breaker is in gate-dividing state, the opening surface of this second groove is to this second interlocking point post.
4. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 3, it is characterized in that: this second mechanical interlock mechanism comprises turnover panel, connecting lever plate, connecting plate and top board, this turnover panel is established on a chassis, turnover panel is provided with the second elastic component, this connecting lever plate is rotatably connected on this chassis vehicle, one end of this connecting lever plate is rotationally connected this turnover panel, the other end is rotationally connected one end of this connecting plate, the other end of this connecting plate is rotationally connected this top board, and this top board can impel the operation axis locking of this first circuit breaker and the second circuit breaker.
5. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 4, it is characterized in that: this second mechanical interlock mechanism also comprises the 3rd cam and top pressure unit, 3rd cam is installed in this second rotating shaft, this top pressure unit is positioned at the below of the 3rd cam and connects this turnover panel, when this circuit breaker is in test position or service position, this turnover panel is positioned at below this interlocking post.
6. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 5, it is characterized in that: this top pressure unit comprises push rod, the 3rd elastic component and pressing plate, 3rd elastic component connects this push rod lower end, and this push rod lower end contact can connect this pressing plate, the affixed turnover panel of this pressing plate.
7. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 4, it is characterized in that: this turnover panel is rotationally connected by a keyset and this connecting lever plate, one end of this keyset is fixedly connected with this turnover panel, and the other end is rotationally connected this connecting lever plate.
8. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 1, is characterized in that: also have the first electrical interlock unit between this first circuit breaker and second circuit breaker.
9. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 2, is characterized in that: this chassis vehicle and have the second electrical interlock unit between this first circuit breaker and the second circuit breaker.
10. a kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply according to claim 8, is characterized in that: this first electrical interlock unit is that the auxiliary switch contact of this first circuit breaker and the second circuit breaker is to the mutual exclusive circuit structure each other between shutting-brake control loop.
11. a kind of vacuum circuit-breaker handcarts switched for middle pressure duplicate supply according to claim 9, is characterized in that: this second electrical interlock unit is that the travel switch auxiliary contact of test position and service position on this chassis vehicle are to the exclusive circuit structure in the shutting-brake control loop of this first circuit breaker and the second circuit breaker.
12. a kind of vacuum circuit-breaker handcarts switched for middle pressure duplicate supply according to any one of claim 1 to 11, is characterized in that: this first circuit breaker and the second circuit breaker side by side fixing on a chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742272.4U CN204243583U (en) | 2014-12-01 | 2014-12-01 | A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742272.4U CN204243583U (en) | 2014-12-01 | 2014-12-01 | A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply |
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| CN204243583U true CN204243583U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420742272.4U Active CN204243583U (en) | 2014-12-01 | 2014-12-01 | A kind of vacuum circuit-breaker handcart switched for middle pressure duplicate supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335930A (en) * | 2017-01-19 | 2018-07-27 | 乐素能电气（上海）有限公司 | Integral type transfer switch unit and its intelligent maintenance method and the Medium Voltage Switchgear with integral type transfer switch unit |
| CN109148186A (en) * | 2018-09-18 | 2019-01-04 | 四川知创知识产权运营有限公司 | A kind of high-voltage circuitbreaker mechanical interlocking mechanism of dual power supply |
| CN109148209A (en) * | 2018-09-18 | 2019-01-04 | 四川知创知识产权运营有限公司 | A kind of power supply entering line mechanical interlocking of switch equipment operating method |
| CN109360753A (en) * | 2018-11-06 | 2019-02-19 | 安士缔(中国)电气设备有限公司 | The mechanical interlocking device and Dual-power device of middle pressure double power supply automatic switching switch |
| CN109994337A (en) * | 2017-12-29 | 2019-07-09 | 江苏明及电气股份有限公司 | A kind of mechanical locking structure and mechanical interlocking device of breaker |
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2014
- 2014-12-01 CN CN201420742272.4U patent/CN204243583U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335930A (en) * | 2017-01-19 | 2018-07-27 | 乐素能电气（上海）有限公司 | Integral type transfer switch unit and its intelligent maintenance method and the Medium Voltage Switchgear with integral type transfer switch unit |
| CN109994337A (en) * | 2017-12-29 | 2019-07-09 | 江苏明及电气股份有限公司 | A kind of mechanical locking structure and mechanical interlocking device of breaker |
| CN109994337B (en) * | 2017-12-29 | 2024-02-13 | 江苏明及电气股份有限公司 | Mechanical interlocking structure and mechanical interlocking device of circuit breaker |
| CN109148186A (en) * | 2018-09-18 | 2019-01-04 | 四川知创知识产权运营有限公司 | A kind of high-voltage circuitbreaker mechanical interlocking mechanism of dual power supply |
| CN109148209A (en) * | 2018-09-18 | 2019-01-04 | 四川知创知识产权运营有限公司 | A kind of power supply entering line mechanical interlocking of switch equipment operating method |
| CN109360753A (en) * | 2018-11-06 | 2019-02-19 | 安士缔(中国)电气设备有限公司 | The mechanical interlocking device and Dual-power device of middle pressure double power supply automatic switching switch |
| CN109360753B (en) * | 2018-11-06 | 2024-01-19 | 安士缔(中国)电气设备有限公司 | Mechanical interlocking device of medium-voltage dual-power automatic change-over switch and dual-power device |
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