CN103177889B - A kind of electrical interlocking mechanism - Google Patents
A kind of electrical interlocking mechanism Download PDFInfo
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- CN103177889B CN103177889B CN201210595064.1A CN201210595064A CN103177889B CN 103177889 B CN103177889 B CN 103177889B CN 201210595064 A CN201210595064 A CN 201210595064A CN 103177889 B CN103177889 B CN 103177889B
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Abstract
The present invention relates to solid insulation ring main unit technical field, disclose a kind of electrical interlocking mechanism and include power transmission shaft, the first auxiliary switch, the second auxiliary switch, sheave, the first slide block, the second slide block, the first chute, the second chute；The front of described sheave, reverse side are equipped with chute, and described chute all includes the arc chute that two sections of radiuses of connection are different, and in two sections of arc chutes, the radian of an arc chute is not less than 180 °, and the radian of another arc chute is less than 180 °；Described first slide block is stuck in described first chute, described second slide block is stuck in described second chute, described first chute, described second chute are each attached in frame, in the chute in the front that one end of described first slide block is stuck in described sheave by pivot pin, in the chute of the reverse side that one end of described second slide block is stuck in described sheave by pivot pin, the other end of described first slide block is connected with the operation axle of described second auxiliary switch by linkage, and the other end of described second slide block is connected with the operation axle of described first auxiliary switch by linkage.
Description
Technical field
The present invention relates to solid insulation ring main unit technical field, particularly relate to a kind of electrical interlocking mechanism.
Background technology
At present, solid insulation ring main unit is progressively to miniaturization, Composite, intelligent direction development, disconnecting switch and earthed switch are complex as a three station isolation-earthed switch, in order to reduce volume, disconnecting switch uses three station vacuum interrupters, and the switch movable contact of three station vacuum interrupters realizes in combined floodgate, separating brake, the operation of three stations of ground connection in the way of linear motion；And and this three stations vacuum interrupter is generally used for combined electric appliance equipment, in addition it is also necessary to realize electric interlock with other switchgears (such as breaker mechanism).
Refer to the structural representation that Fig. 1, Fig. 1 are a kind of typical solid insulation ring main unit.
As shown in Figure 1, this solid insulation ring main unit includes chopper 20, disconnecting switch 10, wherein chopper 20 uses two station vacuum interrupters, disconnecting switch 10 uses three station vacuum interrupters, two station vacuum interrupters are operated by two station mechanisms 40, and three station vacuum interrupters are operated by three-position switch operation mechanism 30.
Such as Fig. 2, shown in Fig. 3, this three-position switch operation mechanism 30 includes operating mechanism and three position actuators 6, wherein operating mechanism includes isolating rotating shaft 1, ground connection rotating shaft 2, first gear mechanism 4, power transmission shaft 3, second gear mechanism 5, described isolation rotating shaft 1 one end, one end of ground connection rotating shaft 2 forms isolated operation end respectively, ground connection operating side, the other end of described isolation rotating shaft 1, the other end of ground connection rotating shaft 2, one end of power transmission shaft 3 carries out transmission by described first gear drive, the other end of described power transmission shaft 3 is connected with driving gear 51 center of described second gear drive, the driven gear 52 of described second gear drive is connected with three position actuators 6 centrally through connecting shaft 60.
As shown in Figure 4, Figure 5, described three position actuators 6 include cam 61, connecting rod 62, and the two ends of described connecting shaft are supported in frame；Described cam 61 is provided with cam channel, and described cam channel includes that be sequentially communicated has the first segmental arc chute of different arc radius, the second segmental arc chute, the 3rd segmental arc chute；The upper end of described connecting rod 62 is provided with pivot pin 64, and described bearing pin 64 is movably connected in described cam channel, and the lower end of described connecting rod 62 is provided with the disconnecting switch moving contact connecting portion of multiple insulated tension pole for connecting multiple disconnecting switch.
When isolation rotating shaft 1 is rotated counterclockwise 180 °, driving cam 61 to rotate 120 ° by the first gear mechanism 4, power transmission shaft the 3, second gear mechanism 5, the pivot pin on connecting rod 62 will move upward from low side in chute, it is achieved disconnecting switch is closed a floodgate the conversion of separating brake；Rotating clockwise ground connection rotating shaft 2 and rotate 180 °, drive cam 61 to rotate 120 ° by the first gear mechanism 4, power transmission shaft the 3, second gear mechanism 5, connecting rod 62 moves upward again, it is achieved the conversion of disconnecting switch separating brake to ground connection.
In order to ensure the motility and the safety that run, in addition it is also necessary to three-position switch operation mechanism 30 is carried out electric interlock.
Therefore, how to realize the electric interlock to three-position switch operation mechanism, become the technical barrier that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to provide a kind of electrical interlocking mechanism, to realize the electric interlock to three-position switch operation mechanism.
To achieve these goals, the invention provides a kind of electrical interlocking mechanism, for three-position switch operation mechanism is carried out electric interlock, including power transmission shaft, the first auxiliary switch, the second auxiliary switch, sheave, the first slide block, the second slide block, the first chute, the second chute；The front of described sheave, reverse side are equipped with chute, and described chute all includes the arc chute that two sections of radiuses of connection are different, and in two sections of arc chutes, the radian of an arc chute is not less than 180 °, and the radian of another arc chute is less than 180 °；Described first slide block is stuck in described first chute, described second slide block is stuck in described second chute, described first chute, described second chute are each attached in frame, in the chute in the front that one end of described first slide block is stuck in described sheave by pivot pin, in the chute of the reverse side that one end of described second slide block is stuck in described sheave by pivot pin, the other end of described first slide block is connected with the operation axle of described second auxiliary switch by linkage, and the other end of described second slide block is connected with the operation axle of described first auxiliary switch by linkage；The center of rotation of described power transmission shaft and described sheave is fixed.
Preferably, described power transmission shaft is the isolation rotating shaft of three-position switch operation mechanism.
Preferably, the operation axle of described first auxiliary switch is connected with the center of rotation of the second direction board of mechanical interlock mechanism, and the operation axle of described second auxiliary switch is connected with the center of rotation of the first direction board of mechanical interlock mechanism.
Preferably, described linkage includes pull bar, connecting lever.
The electrical interlocking mechanism that the present invention provides includes power transmission shaft, the first auxiliary switch, the second auxiliary switch, sheave, the first slide block, the second slide block, the first chute, the second chute, and power transmission shaft is specially the isolation rotating shaft of three-position switch operation mechanism；The front of described sheave, reverse side are equipped with chute, and described chute all includes the arc chute that two sections of radiuses of connection are different, and in two sections of arc chutes, the radian of an arc chute is not less than 180 °, and the radian of another arc chute is less than 180 °；Described first slide block is stuck in described first chute, described second slide block is stuck in described second chute, described first chute, described second chute are each attached in frame, in the chute in the front that one end of described first slide block is stuck in described sheave by pivot pin, in the chute of the reverse side that one end of described second slide block is stuck in described sheave by pivot pin, the other end of described first slide block is connected with the operation axle of described second auxiliary switch by linkage, and the other end of described second slide block is connected with the operation axle of described first auxiliary switch by linkage；The center of rotation of described power transmission shaft and described sheave is fixed.
During original position, the pivot pin on the first slide block is positioned at the end, one end that in the chute of sheave front, circular arc radian is less, and the pivot pin on the second slide block is positioned at the end, one end that in sheave reverse side chute, circular arc radian is bigger.
Need disconnecting switch when the separating brake that closes a floodgate is changed, rotate counterclockwise isolation rotating shaft and rotate 180 °, drive sheave to synchronize counterclockwise and rotate 180 °, owing to the pivot pin on the first slide block is positioned at the end, one end that in the chute of sheave front, circular arc radian is less, pivot pin side shifting outside sheave that sheave will promote in the chute of the sheave back side on the first slide block, so that the first slide block is along the first slide, first slide block drives the second auxiliary switch operation axle to rotate by linkage, complete the conversion of the second auxiliary switch, simultaneously, owing to the pivot pin on the second slide block is positioned at the end, one end that in sheave reverse side chute, circular arc radian is bigger, it is mobile that the rotation of sheave will not make the second slide block produce, first auxiliary switch will not transition status.
When needing to change disconnecting switch from separating brake to ground connection, rotate clockwise ground connection rotating shaft and rotate 180 °, ground connection rotating shaft drives isolation rotating shaft and sheave to rotate 180 ° counterclockwise by gear mechanism, promote the pivot pin side shifting outside sheave on the second slide block in sheave reverse side chute, so that the second slide block is along the second slide, and then drive the operation axle of the first auxiliary switch to rotate by linkage, complete the conversion of the first auxiliary switch, simultaneously, pivot pin on first slide block is in the chute that sheave front circular arc radian is bigger, it is mobile that the rotation of sheave will not make the first slide block produce, second auxiliary switch will not transition status.
The present invention by sheave rotarily drive the first slide block, the second sequential slider moves, and then realize the sequence of states conversion of the first auxiliary switch, the second auxiliary switch, thus realize the pneumatic interlocking of three-position switch operation mechanism, it is ensured that the motility of operation and safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical solid insulation ring main unit；
Fig. 2 is the structural representation of three-position switch operation mechanism in Fig. 1；
Fig. 3 is the structural representation operating device in Fig. 2；
Fig. 4 is the side-looking structural representation of three position actuators in Fig. 2；
Fig. 5 is the plan structure schematic diagram of three position actuators in Fig. 2；
Fig. 6 is the main TV structure schematic diagram of electrical interlocking mechanism provided by the present invention；
Fig. 7 is the plan structure schematic diagram of Fig. 6；
Fig. 8 is the structural representation of Geneva mechanism；
Fig. 9 is the side-looking structural representation of Fig. 8；
Figure 10 is the structural representation in sheave front in Fig. 8；
Figure 11 is the structural representation of sheave reverse side in Fig. 8；
Figure 12 is the structural representation of mechanical interlock mechanism；
Wherein, in Fig. 1-Figure 12:
Disconnecting switch 10, chopper 20, three-position switch operation mechanism 30, two station mechanism 40；Isolation rotating shaft 1, ground connection rotating shaft 2, power transmission shaft the 3, first gear mechanism the 4, second gear mechanism 5, driving gear 51, driven gear 52, three position actuator 6, connecting shaft 60, cam 61, connecting rod 62；
Frame the 100, first auxiliary switch the 101, second auxiliary switch 102, sheave the 103, first slide block the 104, second slide block 105, pivot pin 106, pivot pin the 107, first chute the 108, second chute 109, connecting lever 110, connecting rod 111；
First direction board 202, first grade pin the 221, second direction board 203, second gear pin 231, baffle plate 204.
Detailed description of the invention
In order to make those skilled in the art be better understood from technical scheme, the present invention is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Refer to the main TV structure schematic diagram that Fig. 6-Fig. 9, Fig. 6 are electrical interlocking mechanism provided by the present invention；Fig. 7 is the plan structure schematic diagram of Fig. 6；Fig. 8 is disconnecting switch when being in "on" position, the structural representation of Geneva mechanism；Fig. 9 is the side-looking structural representation of Fig. 8.
As shown in Fig. 6-Fig. 9, the electrical interlocking mechanism that the present invention provides, for three-position switch operation mechanism is carried out electric interlock, including power transmission shaft, first auxiliary switch the 101, second auxiliary switch 102, Geneva mechanism, described Geneva mechanism includes sheave the 103, first slide block, the second slide block, first chute the 108, second chute 109, power transmission shaft is specially the isolation rotating shaft 1 of three-position switch operation mechanism, isolation rotating shaft 1 is by bearings in frame 100, and the center of rotation of described power transmission shaft and described sheave 103 is fixed.
The front of described sheave 103, reverse side are equipped with chute, described chute all includes the arc chute that two sections of radiuses of connection are different, and the radian of an arc chute is not less than 180 ° in two sections of arc chutes, the radian of another arc chute is less than 180 °, in concrete scheme, the radian of one arc chute is 180 degree, and the radian of another arc chute is less than 180 °, is connected by excessive section therebetween；Described first chute 108 is fixed in frame 100, and the second chute 109 is in frame 100；One end of described first slide block 104 is stuck in the chute in sheave 103 front by pivot pin 106, pivot pin 106 can slide in the chute in front, first slide block 104 is stuck in the first chute 108, the other end of the first slide block 104 is connected by the operation axle of linkage and the second auxiliary switch 102, in concrete scheme, this linkage includes connecting lever 110, connecting rod 111, one end of connecting rod 111 is connected with the other end of the first slide block 104, the other end of connecting rod 111 is connected with one end of connecting lever 110, and the other end of connecting lever 110 and the operation axle of the second auxiliary switch 102 connect.
In the chute of the reverse side that one end of described second slide block 105 is stuck in described sheave 103 by pivot pin 107, pivot pin 107 can slide in the chute of reverse side, and the second slide block 105 is stuck in the second chute 109；The other end of the second slide block 105 is connected by the operation axle of linkage and the first auxiliary switch 101, in concrete scheme, this linkage includes connecting lever 110, connecting rod 111, one end of connecting rod 111 is connected with the other end of the second slide block 105, the other end of connecting rod 111 is connected with one end of connecting lever 110, and the other end of connecting lever 110 and the operation axle of the first auxiliary switch 101 connect.
Below in conjunction with the accompanying drawings the operation principle of Geneva mechanism is introduced.
Refer to Figure 10, Figure 11, during original position, pivot pin 106 is positioned at the A point in the chute of sheave 103 front, and pivot pin 107 is positioned at the E point in sheave 103 reverse side chute；When isolating rotating shaft 1 and driving sheave 103 to rotate 180 ° counterclockwise, pivot pin 106 from the A point of sheave 103 front chute to C point, due in same circular arc, pivot pin 107 not motion, second slide block 105 does not moves, and pivot pin 106 from the A point of sheave 103 front chute by changeover portion to C point, the first slide block 104 moves along the first chute 108；When isolation rotating shaft 1 drives sheave 103 to continue to turn after 180 °, and pivot pin 106 does not moves from the C point of sheave 103 front chute to B point, the first slide block 104, and pivot pin 107 from F point through changeover portion to D point, the second slide block 105 moves along the second chute 109.During i.e. sheave 103 turns over 360 °, the first slide block 104 first moved after again the second slide block 105 move, it is achieved sequentially-operating.
In order to more intuitively introduce the operation principle of the electrical interlocking mechanism that the present invention provides, we combine the structure of three-position switch operation mechanism.
During original position, the pivot pin 106 on the first slide block 104 is positioned at the end, one end that in the chute of sheave 103 front, circular arc radian is less, and the pivot pin 107 on the second slide block 105 is positioned at the end, one end that in sheave 103 reverse side chute, circular arc radian is bigger.
nullNeed disconnecting switch when the separating brake that closes a floodgate is changed，Rotate counterclockwise isolation rotating shaft 1 and rotate 180 °，Sheave 103 is driven to synchronize to rotate 180 ° counterclockwise，Owing to the pivot pin 106 on the first slide block 104 is positioned at the end, one end that in the chute of sheave 103 front, circular arc radian is less，Sheave 103 will promote the pivot pin 106 in the chute of sheave 103 front to the outer side shifting of sheave 103，So that the first slide block 104 slides along the first chute 108，First slide block 104 drives the second auxiliary switch 102 to operate axle by linkage and rotates，Complete the conversion of the second auxiliary switch 102，Simultaneously，Owing to the pivot pin 107 on the second slide block 105 is positioned at the end, one end that in sheave 103 reverse side chute, circular arc radian is bigger，It is mobile that the rotation of sheave 103 will not make the second slide block 105 produce，First auxiliary switch 101 will not transition status.
When needing to change disconnecting switch from separating brake to ground connection, rotate clockwise ground connection rotating shaft 2 and rotate 180 °, ground connection rotating shaft 2 drives isolation rotating shaft 1 and sheave 103 to rotate 180 ° counterclockwise by gear mechanism, promote pivot pin 107 side shifting outside sheave on the second slide block 105 in sheave 103 reverse side chute, so that the second slide block 105 slides along the second chute 109, and then drive the operation axle of the first auxiliary switch 101 to rotate by linkage, complete the conversion of the first auxiliary switch 101, simultaneously, pivot pin 106 on first slide block 104 is in the chute that sheave 103 front circular arc radian is bigger, it is mobile that the rotation of sheave 103 will not make the first slide block 104 produce, second auxiliary switch will not transition status.
The present invention is moved by first slide block the 104, second slide block 105 order that rotarily drives of sheave 103, and then realize the sequence of states conversion of first auxiliary switch the 101, second auxiliary switch 102, thus realize the pneumatic interlocking of three-position switch operation mechanism, it is ensured that the motility of operation and safety.
Preferably in scheme, the operation axle of described first auxiliary switch 101 is connected with the center of rotation of the second direction board of mechanical interlock mechanism, and the operation axle of described second auxiliary switch 102 is connected with the center of rotation of the first direction board of mechanical interlock mechanism.
nullRefer to Figure 12，Described mechanical interlock mechanism includes baffle plate 204、First direction board 202、Second direction board 203，First direction board 202、The center of rotation of the second direction board 203 respectively with the operation axle of the second auxiliary switch 102、The operation axle of the first auxiliary switch 101 connects，Described baffle plate 204 is rotatably arranged on described support，Described baffle plate 204 is positioned at described isolated operation end、The outside of described ground connection operating side，This baffle plate 204 is for optionally blocking described isolated operation hole or described ground connection handle hole，Described first direction board 202、The inner side of described second direction board 203 is respectively equipped with can be against first grade of pin 221 of described baffle plate 204 outer、Second gear pin 231，By rotating described first direction board 202、Described second direction board 203，Namely by adjusting first grade of pin 221、The position of second gear pin 231，Described baffle plate 204 can be at only blocking described isolated operation hole、Only block described ground connection handle hole、Block described isolated operation hole simultaneously、Three positions of described ground connection handle hole.
When disconnecting switch is in "on" position, first grade of pin 221 inside first direction board 202 is positioned at baffle plate 204 upper left side and keeps off baffle plate 204, second gear pin 231 inside second direction board 203 is in the lower left of baffle plate 204 and fails against the position of baffle plate 204, and now baffle plate 204 can only rotate counterclockwise；Counterclockwise baffle plate 204 being rotated 180 °, baffle plate 204 is in the position only blocking described ground connection handle hole, i.e. opens the isolated operation hole in left side, can operate isolation rotating shaft 1；Counterclockwise rotating shaft is rotated 180 ° by isolation, i.e. disconnecting switch is in gate-dividing state, and the second auxiliary switch 102 operates axle and rotates, and drives the first direction board 202 to rotate counterclockwise, and first grade of pin 221 moves, and release baffle plate 204 is spacing；Urged clockwise baffle plate 204 rotates, and due to the spacing releasing of first grade of pin 221, baffle plate 204 is in the position only blocking described isolated operation hole, i.e. opens the ground connection handle hole of the ground connection rotating shaft 2 on right side；Ground connection rotating shaft 2 turns clockwise 180 °, i.e. disconnecting switch is in ground state, and the first auxiliary switch 101 operates axle and rotates, and drives the second direction board 203 to rotate counterclockwise, second gear pin 231 moves to the lower left side restraining position of baffle plate 204；Butterfly 204 counterclockwise, baffle plate 204 is in and blocks described isolated operation hole and the position of described ground connection handle hole simultaneously, spacing due to second gear pin 231, and baffle plate 204 can not continue to rotate, i.e. ensureing under ground state can not operation isolation rotating shaft 1, it is achieved the operation interlocking of three station operating mechanisms.
The above is only the description of the preferred implementation invented; should be understood that; finiteness due to literal expression; and objectively there is unlimited concrete structure; for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (3)
1. an electrical interlocking mechanism, for carrying out electric interlock to three-position switch operation mechanism, it is characterised in that include power transmission shaft, the first auxiliary switch, the second auxiliary switch, sheave, the first slide block, the second slide block, the first chute, the second chute；
The front of described sheave, reverse side are equipped with chute, and described chute all includes the arc chute that two sections of radiuses of connection are different, and in two sections of arc chutes, the radian of an arc chute is not less than 180 °, and the radian of another arc chute is less than 180 °；
Described first slide block is stuck in described first chute, described second slide block is stuck in described second chute, described first chute, described second chute are each attached in frame, in the chute in the front that one end of described first slide block is stuck in described sheave by pivot pin, in the chute of the reverse side that one end of described second slide block is stuck in described sheave by pivot pin, the other end of described first slide block is connected with the operation axle of described second auxiliary switch by linkage, and the other end of described second slide block is connected with the operation axle of described first auxiliary switch by linkage；
The center of rotation of described power transmission shaft and described sheave is fixed；
Wherein,
Described linkage includes connecting lever, connecting rod；
One end of described connecting rod other end with the other end of described first slide block, described second slide block respectively is connected, the other end of described connecting rod is connected with one end of described connecting lever, and the other end of described connecting lever is connected with operation axle, the operation axle of described first auxiliary switch of described second auxiliary switch respectively.
Electrical interlocking mechanism the most according to claim 1, it is characterised in that described power transmission shaft is the isolation rotating shaft of three-position switch operation mechanism.
Electrical interlocking mechanism the most according to claim 1, it is characterized in that, the operation axle of described first auxiliary switch is connected with the center of rotation of the second direction board of mechanical interlock mechanism, and the operation axle of described second auxiliary switch is connected with the center of rotation of the first direction board of mechanical interlock mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595064.1A CN103177889B (en) | 2012-12-24 | 2012-12-24 | A kind of electrical interlocking mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595064.1A CN103177889B (en) | 2012-12-24 | 2012-12-24 | A kind of electrical interlocking mechanism |
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| CN103177889A CN103177889A (en) | 2013-06-26 |
| CN103177889B true CN103177889B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210595064.1A Active CN103177889B (en) | 2012-12-24 | 2012-12-24 | A kind of electrical interlocking mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105140064A (en) * | 2015-07-29 | 2015-12-09 | 国家电网公司 | Interlocking device for isolation switch, earthing switch and circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151528Y (en) * | 1993-04-12 | 1993-12-29 | 淮南煤矿机械厂 | Electromechanic linkage locking apparatus |
| WO1998020589A1 (en) * | 1996-11-06 | 1998-05-14 | Siemens Aktiengesellschaft | Insertable equipment carrier with a locking device |
| CN1848324A (en) * | 2006-03-16 | 2006-10-18 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker interlocking device |
| EP2518748A1 (en) * | 2011-04-27 | 2012-10-31 | Bticino S.p.A. | Interlocking device for electrical apparatuses and interlocking group including said device |
| CN203134620U (en) * | 2012-12-24 | 2013-08-14 | 宁波优维电力科技有限公司 | Electrical interlocking mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4445081C1 (en) * | 1994-12-05 | 1996-04-11 | Siemens Ag | Three setting switch drive for medium voltage switchgear |
-
2012
- 2012-12-24 CN CN201210595064.1A patent/CN103177889B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151528Y (en) * | 1993-04-12 | 1993-12-29 | 淮南煤矿机械厂 | Electromechanic linkage locking apparatus |
| WO1998020589A1 (en) * | 1996-11-06 | 1998-05-14 | Siemens Aktiengesellschaft | Insertable equipment carrier with a locking device |
| CN1848324A (en) * | 2006-03-16 | 2006-10-18 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker interlocking device |
| EP2518748A1 (en) * | 2011-04-27 | 2012-10-31 | Bticino S.p.A. | Interlocking device for electrical apparatuses and interlocking group including said device |
| CN203134620U (en) * | 2012-12-24 | 2013-08-14 | 宁波优维电力科技有限公司 | Electrical interlocking mechanism |
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| CN103177889A (en) | 2013-06-26 |
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Owner name: NINGBO YOUWEI ELECTRIC POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LIU XIAOYING Effective date: 20140321 |
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Effective date of registration: 20140321 Address after: 315324, No. 158, west highway, Zhouxiang Town, Cixi City, Zhejiang, Ningbo Applicant after: Ningbo Youwei Electric Power Technology Co., Ltd. Address before: 315324, No. 158, west highway, Zhouxiang Town, Zhejiang, Cixi Applicant before: Liu Xiaoying |
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