CN203434028U - Reverse interlock structure between back door of switch cabinet and grounding switch - Google Patents
Reverse interlock structure between back door of switch cabinet and grounding switch Download PDFInfo
- Publication number
- CN203434028U CN203434028U CN201320577835.4U CN201320577835U CN203434028U CN 203434028 U CN203434028 U CN 203434028U CN 201320577835 U CN201320577835 U CN 201320577835U CN 203434028 U CN203434028 U CN 203434028U
- Authority
- CN
- China
- Prior art keywords
- switch
- back door
- round steel
- grounding switch
- interlock structure
- Prior art date
- 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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Abstract
The utility model discloses a reverse interlock structure between a back door of a switch cabinet and a grounding switch. An L-shaped thin round steel (5) penetrates through the middle part of an operating big shaft (4) of the grounding switch, the L-shaped thin round steel (5) extends out from the rear side of the big shaft (4) and is connected with a spring (3), the other side of the spring (3) is installed on a connecting level (2), and in this way the reverse interlock structure is formed. By adopting the interlock structure, a handle of the grounding switch is unable to be inserted into an operating hole of the grounding switch under the condition that the back door is not closed, so that accidents caused by incorrect operation of operation personnel are avoided, and the problem of incorrect operation of the operation personnel are thoroughly solved.
Description
Technical field
The utility model relates to the back door of a kind of switch cubicle in electrical power distribution system and the reverse interlocking of earthed switch.
Background technology
In electrical power distribution system, what between rear door of switch cabinet and earthed switch, have for a long time does not have a reverse interlocking, must be in closing back door just can operational grounding switch, have even to have increased reverse interlocking also unreliable, likely cause misoperation that the operation of earthed switch operating axis is bad, this just likely jeopardizes operating personnel's personal safety, even causes loss of life or personal injury event.For fear of the generation of the accident, need especially a kind of back door of switch cubicle and the reverse interlocking of earthed switch, under the state that back door is not closed, earthed switch operating grip cannot insert earthed switch handle hole, avoid the possibility of misoperation completely.
Utility model content
Cannot operational grounding switch when the purpose of this utility model is to solve the state at closing switch cabinet back door not.
The technical solution of the utility model is: the reverse interlocking structure of a kind of back door of switch cubicle and earthed switch, be characterised in that, in the middle of earthed switch operation macro-axis, be coated with a L shaped thin round steel, L shaped thin round steel passes with an extension spring and is connected at macro-axis rear side from macro-axis, and the opposite side of extension spring is arranged on connecting lever.
When door is opened, connecting lever is in free state, and extension spring drives round steel to move before cabinet, and round steel stretches out from macro-axis front end, and earthed switch handle is inserted and do not entered handle hole, and causing cannot operational grounding switch; When door is closed, door promotes connecting lever motion, and spring pulls round steel that round steel is moved backward, and earthed switch handle side can update hole operation earthed switch.
The reverse interlocking structure of the back door of the switch cubicle that the utility model provides and earthed switch, adopts the method that earthed switch handle cannot update hole, makes interlocking very reliable, has also thoroughly solved operating personnel's misoperation problem.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the back door of the utility model switch cubicle and the reverse interlocking structure embodiment of earthed switch.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
In figure: 1, back door 2, connecting lever 3, extension spring 4, earthed switch operation macro-axis 5, round steel
As shown in the figure, the reverse interlocking structure of the back door of the utility model switch cubicle and earthed switch is to wear a L shaped thin round steel 5 in the middle of earthed switch operation macro-axis 4, L shaped thin round steel 5 passes with an extension spring 3 and is connected at macro-axis 4 rear sides from macro-axis 4, and the opposite side of extension spring 3 is arranged on connecting lever 2.
The utility model is when door 1 is when open, and connecting lever 2 is in free state, and extension spring 3 drives round steel 5 to move before cabinet, and round steel 5 stretches out from macro-axis 4 front ends, and earthed switch handle is inserted and do not entered handle hole, and causing cannot operational grounding switch; When door 1 is closed, door 1 promotes a connecting lever 2 motions, and spring 3 pulls round steel 5 that round steel 5 is moved backward, and earthed switch handle side can update hole operation earthed switch, thereby plays interlock.
Claims (1)
1. the reverse interlocking structure of the back door of a switch cubicle and earthed switch, it is characterized in that: in the middle of earthed switch operation macro-axis (4), wear a L shaped thin round steel (5), L shaped thin round steel (5) passes with an extension spring (3) and is connected at macro-axis (4) rear side from macro-axis (4), and the opposite side of extension spring (3) is arranged on connecting lever (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577835.4U CN203434028U (en) | 2013-09-18 | 2013-09-18 | Reverse interlock structure between back door of switch cabinet and grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577835.4U CN203434028U (en) | 2013-09-18 | 2013-09-18 | Reverse interlock structure between back door of switch cabinet and grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203434028U true CN203434028U (en) | 2014-02-12 |
Family
ID=50063052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320577835.4U Expired - Fee Related CN203434028U (en) | 2013-09-18 | 2013-09-18 | Reverse interlock structure between back door of switch cabinet and grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203434028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654892A (en) * | 2017-03-21 | 2017-05-10 | 北京北方箱变电气有限公司 | Back door grounding switch interlocking device of medium voltage switchgear |
-
2013
- 2013-09-18 CN CN201320577835.4U patent/CN203434028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654892A (en) * | 2017-03-21 | 2017-05-10 | 北京北方箱变电气有限公司 | Back door grounding switch interlocking device of medium voltage switchgear |
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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: 20140212 Termination date: 20180918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |