CN203179781U - A load switch structure - Google Patents
A load switch structure Download PDFInfo
- Publication number
- CN203179781U CN203179781U CN 201320143917 CN201320143917U CN203179781U CN 203179781 U CN203179781 U CN 203179781U CN 201320143917 CN201320143917 CN 201320143917 CN 201320143917 U CN201320143917 U CN 201320143917U CN 203179781 U CN203179781 U CN 203179781U
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- CN
- China
- Prior art keywords
- energy
- spring
- housing
- cam
- main shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a load switch structure comprising a housing, a fixed contact fixed in the housing, a moving contact disposed in the housing, and an operating mechanism. A bursting disk portion is disposed on the housing. The operating mechanism comprises a bottom cam, an energy-storing spring, a spring rod, a top cam, a top connecting board, an extension spring, a bottom connecting board, and a main shaft connecting lever. The energy-storing spring is disposed on the spring rod. The top cam and the bottom cam are disposed on the top side and the bottom side of the spring rod, respectively. One end of the bottom connecting board is arranged under the energy-storing spring and corresponds to the energy-storing spring, while the other end of the bottom connecting board is connected with the main shaft connecting lever through a four-bar linkage. One end of the top connecting board is arranged over the energy-storing spring and corresponds to the energy-storing spring, while the other end of the top connecting board is connected with the main shaft connecting lever through another four-bar linkage. When generated internal arcing generates faults, high-pressure gas is released at the bursting disk portion so as not to damage an operator or other parts. The operating mechanism has characteristics of simple structure and easy manipulation.
Description
Technical field
The utility model relates to the high voltage electric switch apparatus field, relates in particular to a kind of on-load switch structure.
Background technology
On-load switch be can close in overload condition ShiShimonoseki of normal galvanic circle conditioned disjunction regulation, carrying and drop-out current, also can be under unusual galvanic circle condition (for example short circuit) in accordance with regulations the switchgear of time loaded current.
The dirty performance of the insulating properties of existing its housing of on-load switch and anti-soil remains further to be improved, and when the arcing fault of the inside of generation, might cause case fragmentation, is damaged to the operator easily or destroys other parts.In addition, the operating mechanism more complicated of existing on-load switch.
The utility model content
In order to address the above problem, the utility model provides a kind of on-load switch structure, to solve problems of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
The on-load switch structure comprises housing, is fixed on the interior fixed contact of housing, is arranged on moving contact and operating mechanism in the housing, it is characterized in that described housing is provided with the explosion-proof membranous part of wall thickness; Described operating mechanism comprises cam, energy-stored spring, spring lever, overhead cam, upper plate, extension spring, lower plate, main shaft connecting lever down, energy-stored spring is arranged on the spring lever, upper and lower cam is separately positioned on the both sides up and down of spring lever, one end of lower plate is located at the below of energy-stored spring and corresponding with energy-stored spring, the other end of lower plate is connected with the main shaft connecting lever by four connecting rods, one end of upper plate is located at the top of energy-stored spring and corresponding with energy-stored spring, and the other end of upper plate is connected with the main shaft connecting lever by four connecting rods.
In a preferred embodiment of the present utility model, the insulation shell of described housing for adopting the cast of APG technology to form by epoxy resin.
Further, described insulation shell is put together by last insulating cover and following insulating cover, and described explosion-proof membranous part is arranged on down on the insulating cover.
Further, described insulation shell inside is filled with sulfur hexafluoride gas.
Housing of the present utility model is provided with the thinner explosion-proof membranous part of wall thickness, and when the arcing fault of the inside of generation, gases at high pressure discharge from explosion-proof membranous part, and are unlikely to be damaged to the operator or destroy other parts.
Operating mechanism of the present utility model has simple in structure, convenience operation.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better execution mode of this case and be obtained to be well understood to.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the schematic diagram of operating mechanism of the present utility model.
Fig. 2 is the schematic diagram of housing of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, the on-load switch structure comprises housing, is fixed on the interior fixed contact of housing, is arranged on the moving contact in the housing.The insulation shell of housing for adopting the cast of APG technology to form by epoxy resin, insulation shell is put together by last insulating cover 100 and following insulating cover 200, and insulation shell inside is filled with the sulfur hexafluoride gas of 0.05mpa.
Following insulating cover 200 is provided with the explosion-proof membranous part 210 of wall thickness.When the arcing fault of the inside of generation, gases at high pressure discharge from explosion-proof membranous part, and are unlikely to be damaged to the operator or destroy other parts.Certainly, explosion-proof membranous part also can be arranged on the insulating cover 100.
Operating mechanism comprises cam 1, energy-stored spring 2, spring lever 3, overhead cam 4, upper plate 5, extension spring 6, lower plate 8, main shaft connecting lever down, energy-stored spring 2 is arranged on the spring lever 3, upper and lower cam (4,1) is separately positioned on the both sides up and down of spring lever, one end of lower plate 5 is located at the below of energy-stored spring and corresponding with energy-stored spring, the other end of lower plate 8 is connected with the main shaft connecting lever by four connecting rods, one end of upper plate is located at the top of energy-stored spring and corresponding with energy-stored spring, and the other end of upper plate is connected with the main shaft connecting lever by four connecting rods.
The ground connection operation: the operating grip clockwise direction rotates, and drives overhead cam 4 and rotates, and compressed energy-storage spring 2 makes it energy storage.When the energy-stored spring energy reaches maximum, be rotated further cam 4, energy-stored spring 2 energy begin to discharge, and stir upper plate 5, rotate by four connecting rod driving main shaft connecting levers simultaneously, do contact of earth thereby drive contact.The sub-switching operation of earthed switch only needs the ground connection operating grip is counterclockwise rotated, and gets final product execution.
Closing operation: drive cam 1 rotation down clockwise by operating grip equally, compressed energy-storage spring 2 makes it energy storage.When the energy-stored spring energy discharges, stir lower plate 8, rotate by four connecting rod driving main shaft connecting levers simultaneously, do the action of closing a floodgate thereby drive the contact on-load switch.
Sub-switching operation: only need operating grip is counterclockwise rotated, get final product execution.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection range that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. the on-load switch structure comprises housing, is fixed on the interior fixed contact of housing, is arranged on moving contact and operating mechanism in the housing, it is characterized in that described housing is provided with the explosion-proof membranous part of wall thickness; Described operating mechanism comprises cam, energy-stored spring, spring lever, overhead cam, upper plate, extension spring, lower plate, main shaft connecting lever down, energy-stored spring is arranged on the spring lever, upper and lower cam is separately positioned on the both sides up and down of spring lever, one end of lower plate is located at the below of energy-stored spring and corresponding with energy-stored spring, the other end of lower plate is connected with the main shaft connecting lever by four connecting rods, one end of upper plate is located at the top of energy-stored spring and corresponding with energy-stored spring, and the other end of upper plate is connected with the main shaft connecting lever by four connecting rods.
2. on-load switch structure according to claim 1 is characterized in that, the insulation shell of described housing for adopting the cast of APG technology to form by epoxy resin.
3. on-load switch structure according to claim 2 is characterized in that, described insulation shell is put together by last insulating cover and following insulating cover, and described explosion-proof membranous part is arranged on down on the insulating cover.
4. on-load switch structure according to claim 2 is characterized in that, described insulation shell inside is filled with sulfur hexafluoride gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143917 CN203179781U (en) | 2013-03-27 | 2013-03-27 | A load switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143917 CN203179781U (en) | 2013-03-27 | 2013-03-27 | A load switch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203179781U true CN203179781U (en) | 2013-09-04 |
Family
ID=49076444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320143917 Expired - Fee Related CN203179781U (en) | 2013-03-27 | 2013-03-27 | A load switch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203179781U (en) |
-
2013
- 2013-03-27 CN CN 201320143917 patent/CN203179781U/en not_active Expired - Fee Related
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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: 20130904 Termination date: 20190327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |