CN201000835Y - Contact structure of excitation-free tap switch - Google Patents
Contact structure of excitation-free tap switch Download PDFInfo
- Publication number
- CN201000835Y CN201000835Y CNU200720066340XU CN200720066340U CN201000835Y CN 201000835 Y CN201000835 Y CN 201000835Y CN U200720066340X U CNU200720066340X U CN U200720066340XU CN 200720066340 U CN200720066340 U CN 200720066340U CN 201000835 Y CN201000835 Y CN 201000835Y
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- Prior art keywords
- contact
- annular dynamic
- fastening rod
- dynamic contact
- moving contact
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Abstract
The utility model discloses a contact structure of a non excitation tap switch, which comprises a circular moving contact, a plurality of fixing moving contacts and a central axle; the utility model is characterized in that a groove is arranged on the central axle, facing the circular moving contact, parts of the circular moving contact are positioned inside the groove; a moving contact supporting piece and a locking mechanism are also comprised, the moving contact supporting piece is fixed on the central axle; the locking mechanism comprises a top fastening rod seat and a top fastening rod arranged on the top fastening rod seat; the top fastening rod seat consists of an extension piece extending from the moving contact supporting positioned on the relative two sides of the circular moving contact into the circular moving contact; the end part of the top fastening rod is mutually top bunted with the groove on the circular inner wall of the circular moving contact corresponding to the end part of the top fastening rod; one end of the excircle of the circular moving contact can be freely rotated and arranged inside the groove of the central axle, and the other end is tightly held between two fixing moving contacts. The utility model has the advantages that the structure is more severe, the size of the circular moving contact is small, the amount of used material is reduced, the cost is reduced, and the voltage class of the switch and the ability of short circuit resistance are improved.
Description
Technical field
The utility model relates to a kind of structure of contact terminal of off circuit tap changer.
The background skill originally
As shown in Figure 1, the structure of contact terminal of off circuit tap changer comprises annular dynamic contact 11, decides contact 12 and central shaft 13.Decide contact supporting for circular, a plurality ofly decide contact and be distributed in the circumference, the center is provided with centre bore.This annular dynamic contact diameter is bigger, and its side ring inwall by central shaft extends to be provided with can inlay the moving contact supporter 15 that overlaps central shaft, and described central shaft 13 passes through the centre bore that this decides contact supporting 14, is connected with annular dynamic contact by moving contact supporter 15.Moving contact supporter 15 extends to from the annular dynamic contact both sides and forms a pedestal in the ring of annular dynamic contact.The opposite side inwall of annular dynamic contact be provided with one with the top-fastening rod 16 of pedestal contact, be with stage clip 17 on this top-fastening rod.The cylindrical of this annular dynamic contact and two is decided contact and is contacted.Though this structure can play moving contact and the change action of deciding contact supporting, exists the annular dynamic contact size big, interelectrode distance is dwindled relatively, makes to improve the shortcoming that safe class reduces.
Summary of the invention
The utility model is in order to overcome the above-mentioned shortcoming that prior art exists, and a kind of annular dynamic contact size that provides is little, reduce material usage, reduce production costs and improve the structure of contact terminal of the novel off circuit tap changer of safe class.
To achieve these goals, the technical measures that the utility model is taked are: the structure of contact terminal of off circuit tap changer comprises annular dynamic contact, a plurality ofly decides contact and central shaft; A plurality ofly decide contact and fixedly be located at respectively and decide to be circle distribution on the contact supporting; Described central shaft is positioned at this a plurality of circle center that decide the contact place; Described annular dynamic contact ring inwall is provided with a circle groove, and this annular dynamic contact is fixed by moving contact supporter and central shaft, switches and decides contact and contact with the rotation of central shaft; Be characterized in,
Described central axis plane is provided with a groove that can hold annular dynamic contact to the position of annular dynamic contact, and described annular dynamic contact has part to be arranged in this groove;
Also comprise a retaining mechanism,
Described retaining mechanism comprises that one holds out against pole socket and is located at a top-fastening rod that holds out against on the pole socket; The described pole socket that holds out against is made of the extension that extends to described annular dynamic contact ring from the moving contact supporter that is positioned at the relative both sides of described annular dynamic contact respectively; The ring inner wall trench of the end of described top-fastening rod and its corresponding described annular dynamic contact is contact mutually;
Cylindrical one end of described annular dynamic contact is located in the groove of described central shaft free to rotately, and the other end holds out against two to be decided between the contact.
The structure of contact terminal of above-mentioned off circuit tap changer, wherein, the ring inwall of described annular dynamic contact is provided with a circle can hold the groove of top-fastening rod end; In the described retaining mechanism, the described pole socket that holds out against comprises two support bars of the ring both sides that extend to described annular dynamic contact from the moving contact supporter that is positioned at the relative both sides of described annular dynamic contact respectively and stretches the pedestal that the ring at described annular dynamic contact connects as one this two support bar, is provided with pilot hole in the middle of the described pedestal; Described top-fastening rod one end is located in the described pilot hole, and its other end close end is provided with flange; Also comprise a stage clip, described stage clip is set on the described top-fastening rod, and between the set flange of the pedestal that holds out against pole socket and top-fastening rod, this stage clip forces the ring inner wall trench contact of end pairing described annular dynamic contact with it of top-fastening rod.
The structure of contact terminal of above-mentioned off circuit tap changer, wherein, two support bars and pedestal described in the described retaining mechanism form closed hoop, are set on the ring of described annular dynamic contact; Be provided with the gap between the ring of described two support bars and pedestal and described annular dynamic contact.
The structure of contact terminal of above-mentioned off circuit tap changer, wherein, described insulation mandrel is made of the expoxy glass wire material.
The structure of contact terminal of above-mentioned off circuit tap changer wherein, is describedly decided contact supporting and is fan-shaped, describedly a plurality ofly decides contact and is distributed in the described semicircle of deciding contact supporting.
Because the utility model has adopted above technical scheme, can design the annular dynamic contact diameter less, be installed on the moving contact supporter, part is positioned at the groove of central shaft one side, and groove is that annular dynamic contact gets out of the way certain distance, annular dynamic contact can circumferentially rotate in wherein, reduced the switch radial dimension, construction of switch more has been becoming tight gathers, the annular dynamic contact size is little, reduce material usage, reduce cost.
Simultaneously,, increased interelectrode insulation distance, can improve the electric pressure and the anti-short circuit capability of switch because the annular dynamic contact size is little.
Owing to holding out against by retaining mechanism and deciding contacting of contact, make change action more reliable again.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the combination schematic diagram of the structure of contact terminal of off circuit tap changer in the prior art.
Fig. 2 is the combination schematic diagram of the structure of contact terminal of the utility model off circuit tap changer.
Fig. 3 is the schematic cross-section of central shaft in the structure of contact terminal of the utility model off circuit tap changer.
Fig. 4 is the schematic cross-section of the structure of contact terminal combination (a group) of the utility model off circuit tap changer.
Embodiment
See also Fig. 2.The structure of contact terminal of the utility model off circuit tap changer comprises annular dynamic contact 21, a plurality ofly decides contact 22, central shaft 23 and decide contact supporting 24, moving contact supporter 25; The contact supporting of deciding described in the present embodiment is fan-shaped, describedly a plurality ofly decides contact and is located at interval in this semicircle of deciding contact supporting, circumferentially.The center that should decide be positioned at circumference on the contact supporting is provided with through hole, and described central shaft passes this through hole of deciding contact supporting installation.Described moving contact supporter 25 is fixed on the described central shaft 23, is used to support the stationary annular moving contact.Described annular dynamic contact is arranged on central shaft one side by moving contact supporter 25, switches with each with the rotation of central shaft and decides contacting of contact.
See also Fig. 2, Fig. 4.Central shaft 23 described in the utility model is provided with a groove 233 that can hold annular dynamic contact towards the position of annular dynamic contact.During assembling, cylindrical one end of described annular dynamic contact is located in the groove of described central shaft free to rotately, and the other end holds out against two to be decided between the contact.
The utility model also comprises a retaining mechanism.Described retaining mechanism comprises that one holds out against pole socket 41 and is located at a top-fastening rod 42 that holds out against on the pole socket; The described pole socket that holds out against is made of the extension that extends to described annular dynamic contact ring from the moving contact supporter that is positioned at the relative both sides of described annular dynamic contact respectively; The ring inwall of the end of described top-fastening rod and its corresponding described annular dynamic contact is contact mutually.The concrete structure of present embodiment is: the ring inwall of described annular dynamic contact is provided with a circle can hold the groove (not shown) of top-fastening rod end; In the described retaining mechanism, the described pole socket that holds out against comprises two support bars 411 of the ring both sides that extend to described annular dynamic contact from the moving contact supporter that is positioned at the relative both sides of described annular dynamic contact respectively and stretches the pedestal 412 that the ring at described annular dynamic contact connects as one this two support bar, this two support bar and pedestal form closed hoop, are set on the ring of described annular dynamic contact; For not influencing the rotation of annular dynamic contact, be provided with the gap between the ring of described two support bars and pedestal and described annular dynamic contact.In the middle of described pedestal, be provided with pilot hole 413; Described top-fastening rod 42 1 ends are located in the described pilot hole, and its other end close end is provided with flange 421; Also comprise a stage clip 43, described stage clip is set on the described top-fastening rod, between the set flange of pedestal and top-fastening rod.This stage clip forces the ring inner wall trench contact of other end end pairing described annular dynamic contact with it of top-fastening rod.Can make annular dynamic contact have certain pressure to contact all the time, reach the purpose of reliable conducting with deciding contact.
The utlity model has the annular dynamic contact size little, reduce material usage, reduce production costs, make With advantage convenient and reliable and the raising safe class.
Claims (5)
1, the technical measures taked of the utility model are: the structure of contact terminal of off circuit tap changer comprises annular dynamic contact, a plurality ofly decides contact and central shaft; A plurality ofly decide contact and fixedly be located at respectively and decide to be circle distribution on the contact supporting; Described central shaft is positioned at this a plurality of circle center that decide the contact place; Described annular dynamic contact is fixed by moving contact supporter and central shaft, switches and decides contact and contact with the rotation of central shaft;
It is characterized in that,
Described central axis plane is provided with a groove that can hold annular dynamic contact to the position of annular dynamic contact, and described annular dynamic contact has part to be arranged in this groove;
Also comprise a retaining mechanism,
Described retaining mechanism comprises that one holds out against pole socket and is located at a top-fastening rod that holds out against on the pole socket; The described pole socket that holds out against is made of the extension that extends to described annular dynamic contact ring from the moving contact supporter that is positioned at the relative both sides of described annular dynamic contact respectively; The ring inwall of the end of described top-fastening rod and its corresponding described annular dynamic contact is contact mutually;
Cylindrical one end of described annular dynamic contact is located in the groove of described central shaft free to rotately, and the other end holds out against two to be decided between the contact.
2, the structure of contact terminal of off circuit tap changer according to claim 1 is characterized in that,
The ring inwall of described annular dynamic contact is provided with a circle can hold the groove of top-fastening rod end;
In the described retaining mechanism, the described pole socket that holds out against comprises two support bars of the ring both sides that extend to described annular dynamic contact from the moving contact supporter that is positioned at the relative both sides of described annular dynamic contact respectively and stretches the pedestal that the ring at described annular dynamic contact connects as one this two support bar, is provided with pilot hole in the middle of the described pedestal; Described top-fastening rod one end is located in the described pilot hole, and its other end close end is provided with flange; Also comprise a stage clip, described stage clip is set on the described top-fastening rod, and between the set flange of the pedestal that holds out against pole socket and top-fastening rod, this stage clip forces the ring inner wall trench contact of end pairing described annular dynamic contact with it of top-fastening rod.
3, the structure of contact terminal of off circuit tap changer according to claim 2 is characterized in that, two support bars and pedestal described in the described retaining mechanism form closed hoop, are set on the ring of described annular dynamic contact; Be provided with the gap between the ring of described two support bars and pedestal and described annular dynamic contact.
4, the structure of contact terminal of off circuit tap changer according to claim 1 is characterized in that, described insulation mandrel is made of the expoxy glass wire material.
5, the structure of contact terminal of off circuit tap changer according to claim 1 is characterized in that, describedly decides contact supporting and is fan-shaped, describedly a plurality ofly decides contact and is distributed in the described semicircle of deciding contact supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720066340XU CN201000835Y (en) | 2007-01-16 | 2007-01-16 | Contact structure of excitation-free tap switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720066340XU CN201000835Y (en) | 2007-01-16 | 2007-01-16 | Contact structure of excitation-free tap switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201000835Y true CN201000835Y (en) | 2008-01-02 |
Family
ID=39015240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720066340XU Expired - Fee Related CN201000835Y (en) | 2007-01-16 | 2007-01-16 | Contact structure of excitation-free tap switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201000835Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024435A (en) * | 2016-07-14 | 2016-10-12 | 武汉泰普变压器开关有限公司 | Off-circuit tap-changer facilitating gear shifting |
| CN106057508A (en) * | 2016-07-13 | 2016-10-26 | 武汉泰普变压器开关有限公司 | Off-circuit tap-changer |
-
2007
- 2007-01-16 CN CNU200720066340XU patent/CN201000835Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057508A (en) * | 2016-07-13 | 2016-10-26 | 武汉泰普变压器开关有限公司 | Off-circuit tap-changer |
| CN106024435A (en) * | 2016-07-14 | 2016-10-12 | 武汉泰普变压器开关有限公司 | Off-circuit tap-changer facilitating gear shifting |
| CN106024435B (en) * | 2016-07-14 | 2019-07-23 | 武汉泰普变压器开关有限公司 | A kind of off circuit tap changer convenient for transferring the files |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20160116 |
|
| EXPY | Termination of patent right or utility model |