CN1521781A - Switching device with a movement limiting unit - Google Patents
Switching device with a movement limiting unit Download PDFInfo
- Publication number
- CN1521781A CN1521781A CNA031020747A CN03102074A CN1521781A CN 1521781 A CN1521781 A CN 1521781A CN A031020747 A CNA031020747 A CN A031020747A CN 03102074 A CN03102074 A CN 03102074A CN 1521781 A CN1521781 A CN 1521781A
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- CN
- China
- Prior art keywords
- limiting component
- main shaft
- driving main
- switching device
- buffer unit
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Abstract
A switching arrangement having a movement limiting component comprises at least a switch frame, a contact fixed on a cradle, a movable contact fixed on one end of a contact connecting rod, a drive shaft fixed on the other end of the contact connecting rod a driver element rigidly attached to the drive main shaft, wherein the switch frame is provided with a movement limiting component which defines the location of the rotation movement of the drive main shaft. The actuating shaft is also provided with a cushioning component which composites a cushioning stop along with the movement limiting component in combination for limiting movement for the rotation movement of the drive main shaft. The movable contact provided by the present invention can prevent overswing.
Description
Technical field
The present invention relates to a kind of switching device with limiting component, particularly a kind of switching device that is used for power supply circuits conducting or disconnection in the power distribution cabinet of looped network distribution system belongs to power transmission technology field.
Background technology
In electrical power transmission system, using the usually said power distribution cabinet of people in a large number.Power consumer carries out unlatching that electric power carries, cuts out or the work of conversion line, normally realize by the action of change over switch in the power distribution cabinet.
In power distribution cabinet, at present often the switch that uses mainly be by be fixed on fixed contact on the supporting seat, be fixed on the contact interlinking lever end moving contact, drive rotating shaft, driver element constitutes, wherein, the contact connecting rod is fixedly installed on and drives in the rotating shaft, and swings with the rotation that drives rotating shaft; The driving shaft of driver element is rigidly connected with the driving rotating shaft.
Switch open, close or switching motion in, the synchronism for each phase circuit of guaranteeing to be switched on or switched off requires to drive rotating shaft and has higher spinning movement speed, that is: dynamic and static contact is disconnected or conducting fast.
Because the rotary speed height, through the phenomenon of regular meeting's generation moving contact overshoot, particularly in turn-on action, because overshoot phenomenon takes place, fixedly the supporting seat of fixed contact usually can be broken.This overshoot phenomenon is harmful and unhelpful to subscriber equipment.
Summary of the invention
Main purpose of the present invention is to be moved the phenomenon of breaking for overcoming above-mentioned supporting seat by overshoot; a kind of switching device with limiting component is provided; utilize this device can make the driving main shaft of high speed motion when the in-position, be subjected to position limit, thereby the protection supporting seat is not subjected to the impact of overshoot action.
Secondary objective of the present invention is the adverse effect that electrical network caused at the power supply asynchrony that produces owing to overshoot, a kind of switching device with limiting component is provided, by the elastic limit of limiting component to the overshoot driving main shaft, improve the consistency of each phase line conduction, reduce too high crest voltage in the electrical network, and its voltage waveform is moved towards relaxation fast, thereby the action that reduces because of switch causes adverse influence to electrical network.
The objective of the invention is to be achieved through the following technical solutions:
A kind of switching device with limiting component, the driving main shaft that this device comprises switch framework at least, be installed in fixed contact on the supporting seat, be installed in the moving contact of contact connecting rod one end, set firmly with the contact connecting rod other end and with the rigidly connected driver element of driving main shaft, be installed with limiting component on the described switch framework; The position that this limiting component constitutes the driving main shaft spinning movement limits.
Described limiting component is rubber-like pillar or stopper or the rigidity pin that is connected with elastomeric element; This limiting component is installed in the switch framework surface, and can limit the driving main shaft rotating distance.
Described limiting component is one or more, and it is spacing that this limiting component carries out two-way rotating distance to driving main shaft.
Described driving main shaft also is provided with buffer unit, and this buffer unit and above-mentioned limiting component constitute jointly buffer limiter, carries out buffer limit in order to the spinning movement to driving main shaft.
The contact rod surface that described buffer unit is arranged on the outside of driving main shaft or end or sets firmly with driving main shaft.
Described buffer unit be the rubber-like block or with the rigidity cylinder of elastomeric element mechanical connection; This buffer unit is with the rotation campaign of driving main shaft.
By above technical scheme as can be known, switching device with limiting component provided by the present invention, utilization and the rigidly connected elastic buffer unit of driving main shaft and limiting component have been realized the restriction to the driving main shaft spinning movement, promptly, when the initial condition of driving main shaft in spinning movement, limiting component is not had an effect, and makes driving main shaft be able to quick acting, thereby guarantees the quick conducting or the disconnection of electric wiring; When moving contact arrived assigned address, the spinning movement that buffer unit, limiting component constitute driving main shaft stopped intervention, and made driving main shaft stop action rapidly in the mode that increases damping, and then made moving contact that the phenomenon of overshoot can not take place.
Switching device with limiting component provided by the present invention, guaranteeing that the fixing supporting seat of fixed contact is not subjected to impacting because of overshoot under the prerequisite of damage, the cut-in voltage peak value of electrical network is significantly reduced, thereby effectively raise the power supply quality of electrical network.
Description of drawings
Fig. 1 is the structural principle schematic diagram of an embodiment provided by the present invention;
Fig. 2 is a specific embodiment profile schematic diagram provided by the present invention.
Embodiment
Below, the present invention is described in further detail by a specific embodiment and with reference to accompanying drawing.
Position limiting structure principle as shown in Figure 1, it comprises supporting seat 1, is installed in fixed contact 2, the driving main shaft 4 on the supporting seat 1, the moving contact 3 that is installed in the contact connecting rod 41 in driving main shaft 4 outsides and is installed in contact connecting rod 41 ends.In addition, it also comprises two spacing pillars 5 that are installed in switch framework surface (not shown) and the buffer unit 42 that sets firmly with the driving main shaft end.Two spacing pillars 5 and buffer unit 42 constitute jointly the buffer limiter to the driving main shaft spinning movement, and its course of work and principle are as follows:
When switch was in separating brake position 00, promptly moving contact 3 was unsettled, and buffer unit 42 is between two spacing pillars 5, and is vertical with the line of two intercolumniations; When driving main shaft 4 rotates to closing position 01 in the direction of the clock, be installed in contact connecting rod 41 servo-actuateds on the driving main shaft 4 to the upright position shown in the figure, the moving contact 3 that its end sets firmly engages with fixed contact 2, at this moment, buffer unit 42 is also followed driving main shaft 4 and is rotated to clockwise direction, and its two ends contact with two spacing pillars 5 respectively.
According to technique scheme, two spacing pillars 5, buffer units 42 can be elastomeric material or one of them is made for elastomeric material, so when buffer unit 42 contacts with two spacing pillars 5, under the ordering about of driving main shaft 4 rotator inertias, strains take place in buffer unit 42, two spacing pillars 5, produce the resistance that driving main shaft 4 is stopped the rotation.Thus, make contact connecting rod 41 can not impact supporting seat 1 and make moving contact 3 be stuck in rapidly with fixed contact 2 best position contacting on.
When switch was in earthing position 02, driving main shaft 4 was to rotation counterclockwise, and buffer unit 42 is also followed and rotated and contact with two spacing pillars 5, and its buffer limit principle is as described in the above-mentioned combined floodgate.
According to buffer limit operation principle shown in Figure 1, can obtain a kind of switching device as shown in Figure 2 with limiting component, two spacing pillars 5 of this device are installed between switch framework and another crossbeam 6, and this crossbeam 6 is erected at the side of switch framework.Buffer unit 42 is arranged between two spacing pillars 5.The middle part of buffer unit 42 and driving main shaft extension set firmly (driving main shaft is located at switch inside among this figure, so not shown).
The setting of uniting by above-mentioned spacing pillar, buffer unit makes switching device provided by the present invention have good working performance.As Fig. 1 and the described buffer limit principle of above-mentioned related text, when moving contact 3 contacts fixed contact 2 fast with contact connecting rod 41, as buffer unit or limiting component are not set, moving contact 3 will impact supporting seat 1 owing to inertia.Show according to result of experiment repeatedly, supporting seat is very easy to be broken by the overshoot of moving contact 3 and 41 generations of contact connecting rod, therefore, useful life of switch that limiting component is not set is shorter relatively, and the switch that is provided with limiting component has long useful life, in addition, be provided with on the basis of limiting component, set up buffer unit again, supporting seat is remained intact, can also make the contact position of moving contact and fixed contact just right, thereby make the joint action of switching device show good voltage characteristic.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1, a kind of switching device with limiting component, the driving main shaft that this device comprises switch framework at least, be installed in fixed contact on the supporting seat, be installed in the moving contact of contact connecting rod one end, set firmly with the contact connecting rod other end and with the rigidly connected driver element of driving main shaft, it is characterized in that: be installed with limiting component on the described switch framework; The position that this limiting component constitutes the driving main shaft spinning movement limits.
2, the switching device with limiting component according to claim 1 is characterized in that: described limiting component is rubber-like pillar or stopper or the rigidity pin that is connected with elastomeric element; This limiting component is installed in the switch framework surface, and can limit the driving main shaft rotating distance.
3, the switching device with limiting component according to claim 1 and 2 is characterized in that: described limiting component is one or more, and it is spacing that this limiting component carries out two-way rotating distance to driving main shaft.
4, the switching device with limiting component according to claim 1, it is characterized in that: described driving main shaft also is provided with buffer unit, this buffer unit and above-mentioned limiting component constitute jointly buffer limiter, carry out buffer limit in order to the spinning movement to driving main shaft.
5, the switching device with limiting component according to claim 4 is characterized in that: the contact rod surface that described buffer unit is arranged on the outside of driving main shaft or end or sets firmly with driving main shaft.
6, according to claim 4 or 5 described switching devices, it is characterized in that with limiting component: described buffer unit be the rubber-like block or with the rigidity cylinder of elastomeric element mechanical connection; This buffer unit is with the rotation campaign of driving main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03102074 CN1261952C (en) | 2003-01-29 | 2003-01-29 | Switching device with a movement limiting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03102074 CN1261952C (en) | 2003-01-29 | 2003-01-29 | Switching device with a movement limiting unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521781A true CN1521781A (en) | 2004-08-18 |
| CN1261952C CN1261952C (en) | 2006-06-28 |
Family
ID=34281588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03102074 Expired - Fee Related CN1261952C (en) | 2003-01-29 | 2003-01-29 | Switching device with a movement limiting unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1261952C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989504A (en) * | 2009-07-29 | 2011-03-23 | 西门子公司 | Driving shaft of electric switch |
| CN103021692A (en) * | 2012-12-28 | 2013-04-03 | 常熟开关制造有限公司(原常熟开关厂） | Switching mechanism for switching device operating mechanism |
| CN103065827A (en) * | 2012-12-28 | 2013-04-24 | 常熟开关制造有限公司(原常熟开关厂） | Operating mechanism with automatic switch transfer |
| CN103065832A (en) * | 2012-12-28 | 2013-04-24 | 常熟开关制造有限公司(原常熟开关厂） | Switch-off limit device of switching device |
-
2003
- 2003-01-29 CN CN 03102074 patent/CN1261952C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989504A (en) * | 2009-07-29 | 2011-03-23 | 西门子公司 | Driving shaft of electric switch |
| CN101989504B (en) * | 2009-07-29 | 2013-03-20 | 西门子公司 | Driving shaft of electric switch |
| CN103021692A (en) * | 2012-12-28 | 2013-04-03 | 常熟开关制造有限公司(原常熟开关厂） | Switching mechanism for switching device operating mechanism |
| CN103065827A (en) * | 2012-12-28 | 2013-04-24 | 常熟开关制造有限公司(原常熟开关厂） | Operating mechanism with automatic switch transfer |
| CN103065832A (en) * | 2012-12-28 | 2013-04-24 | 常熟开关制造有限公司(原常熟开关厂） | Switch-off limit device of switching device |
| CN103065827B (en) * | 2012-12-28 | 2015-07-01 | 常熟开关制造有限公司(原常熟开关厂） | Operating mechanism with automatic switch transfer |
| CN103021692B (en) * | 2012-12-28 | 2015-10-28 | 常熟开关制造有限公司(原常熟开关厂） | A kind of switching mechanism of switchgear operating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1261952C (en) | 2006-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Baoju street 510730 Guangdong economic and Technological Development Zone No. 8 layer 2-5 Patentee after: GUANGZHOU FOKSTONE ELECTRIC Co.,Ltd. Address before: 510098 A, annex 24D, Ring East Road, Guangzhou, Guangdong, Guangdong Patentee before: GUANGZHOU FOKSTONE ELECTRIC Co.,Ltd. |
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| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU FOKSTONE ELECTRIC CO., LTD. Free format text: FORMER NAME: GUANGZHOU HUOSITONG ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 510730 Guangdong Province Bao Ju Guangzhou economic and Technological Development Zone No. 8 2-5 Street Patentee after: FOKSTONE ELECTRIC Co.,Ltd. Address before: Baoju street 510730 Guangdong economic and Technological Development Zone No. 8 layer 2-5 Patentee before: GUANGZHOU FOKSTONE ELECTRIC Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 Termination date: 20220129 |