CN203491523U - Grounding interlocking device for ring main unit - Google Patents
Grounding interlocking device for ring main unit Download PDFInfo
- Publication number
- CN203491523U CN203491523U CN201320565371.5U CN201320565371U CN203491523U CN 203491523 U CN203491523 U CN 203491523U CN 201320565371 U CN201320565371 U CN 201320565371U CN 203491523 U CN203491523 U CN 203491523U
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- China
- Prior art keywords
- main unit
- ring main
- connecting rod
- hole
- chain
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- Expired - Fee Related
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Abstract
The utility model relates to a grounding interlocking device for a ring main unit; the grounding interlocking device comprises a grounding interlocking sheet and a connecting rod; the grounding interlocking sheet is provided with a connecting hole and a positioning hole; the connecting rod is also provided with a connecting hole and a fixing hole; the positioning hole on the grounding interlocking sheet can rotatably fix the grounding interlocking sheet in the ring main unit, the connecting hole on the grounding interlocking sheet is connected with the connecting hole on one end of the connecting rod, and the other end of the connecting rod is connected with an interlocking line in the ring main unit. The grounding interlocking device for the ring main unit can effectively prevent an operation person to falsely enter an electrified room, thereby protecting personal safety of the operation person.
Description
Technical field
The utility model belongs to ring main unit structure-design technique field, is specifically related to a kind of earthing interlocking device for ring main unit.
Background technology
Ring main unit is a kind of electric equipment that high voltage switchgear is contained in metal enclosed body or manufactures assembled compartment ring network power supply unit, its core adopts on-load switch and fuse, have simple in structure, volume is little, price is low, can high power supply quality and the advantage such as performance and power supply safety.In power distribution station and box-type substation that it is widely used in city and residential quarters, skyscraper, large public building, factory and enterprise, be scattered with electric power Gong Yong centers such as Electricity Functionals.Along with instructions for use day by day improves, the structure of traditional ring main unit can not meet some new security performance requirements, and its structure exists needs improvements badly.
The looped network cabinet switch using at present, its earthing interlocking device structure is comparatively complicated, and processing and matching requirements precision are higher, and cause easily breaking down because parts are more.In addition, the fuse earthing device auxiliary lower earthing device contact used in the looped network cabinet switch using at present, in order to prevent its distortion, is all generally to adopt iron plate to make, and causes earth resistance larger.
And the grounding interlocking device on Vehicles Collected from Market in ring main unit is not under ring main unit, door-plate is shut in the situation that, still can operational grounding switch, easily make people's mistakenly entering charged chamber, cause danger.Ring main unit is generally all comprised of on-load switch (isolating switch) and earthed switch and some other electric components.On-load switch (isolating switch) and earthed switch You Yige mechanism drive, and on-load switch (isolating switch) handle hole is upper, earthed switch handle hole under.The mechanism operation of on-load switch (isolating switch) and earthed switch is sequentially: 1, at on-load switch (isolating switch) when closing a floodgate, earthed switch is in open position, now earthed switch handle hole is blocked by interlock plate, cannot operational grounding switch; 2, at on-load switch (isolating switch) during in separating brake, earthed switch is in open position, and now on-load switch (isolating switch) and earthed switch handle hole all can operate, the on-load switch (isolating switch) that can close, and earthed switch also can close; 3,, at earthed switch during in closing position, on-load switch (isolating switch), in open position, is now gone up handle hole and is blocked, cannot operational load switch (isolating switch).1,2,3 above operations are in the situation that lower door-plate shuts.In operating procedure 3, if door-plate is taken off at ground state to (only having ground state just can take off door-plate), earthed switch still can operate, and easily makes people's mistakenly entering charged chamber, causes danger.
In order to solve the problems of the technologies described above, the utility model provides a kind of novel earthing interlocking device for ring main unit, when earthed switch is closed a floodgate, takes off after lower door-plate, earthed switch handle hole is in closure state, operating grip cannot insert reach cannot operational grounding switch object.Only have lower door-plate is installed, just can make earthed switch handle hole in opening-wide state, handle is update smoothly.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of earthing interlocking device for ring main unit that can effectively prevent operating personnel's mistakenly entering charged chamber and protect operating personnel's personal safety.
The technical solution of the utility model is: a kind of earthing interlocking device for ring main unit, it comprises chain of ground connection and connecting rod, chain of described ground connection has connecting hole and location hole, on described connecting rod, also there is connecting hole and fixing hole, on chain of described ground connection location hole chain of ground connection is rotatably mounted in ring main unit, and connecting hole on it is connected to the connecting hole on described connecting rod one end, and the other end of described connecting rod is connected with the chain line in ring main unit.
Further, on the two ends that the connecting hole on described connecting rod and location hole lay respectively at described connecting rod.
Further, chain upper connecting hole of described ground connection and location hole are positioned on one end of chain of described ground connection, and the other end is sheet free end.
In sum, the beneficial effects of the utility model are: the earthing interlocking device for ring main unit of the present utility model can prevent operating personnel's mistakenly entering charged chamber effectively, protection operating personnel's personal safety.
Below by embodiment, be described in more detail the utility model.
Accompanying drawing explanation
Fig. 1 is the chain chip architecture schematic diagram of the earthing interlocking device for ring main unit of the present utility model;
Fig. 2 is the connecting rod structural representation of the earthing interlocking device for ring main unit of the present utility model;
Fig. 3 is chain residing position view of ground connection under door-plate closed state under ring main unit;
Fig. 4 is chain residing position view of ground connection under the state taking off at lower door-plate.
Embodiment
Below in conjunction with accompanying drawing 1, with embodiment, the utility model is further described.But protection range of the present utility model is not limited to this.
Referring to figs. 1 through Fig. 2, wherein show the two-part concrete structure of the earthing interlocking device for ring main unit of the present utility model, should be for the earthing interlocking device of ring main unit, it comprises ground connection chain (as shown in Figure 1) and connecting rod (as shown in Figure 2), chain of ground connection has connecting hole 1 and location hole 2, on described connecting rod, also there is connecting hole 3 and fixing hole 4, on chain of described ground connection location hole 2 by chain of ground connection rotationally in fixing ring main unit, and connecting hole 1 on it is connected to the connecting hole 3 on connecting rod one end, and the other end of connecting rod is connected with the chain line in ring main unit, can drive connecting rod to move when installing and pulling down lower door-plate, connecting rod can further drive chain line to shrink or discharge, chain line pulls the ring main unit ground connection locking plate connecting rod in Fig. 2, ring main unit ground connection locking plate connecting rod in Fig. 2 further drives the motion of chain of ring main unit ground connection.
On-load switch (isolating switch) and earthed switch have been shown in Fig. 3, and in Fig. 3,7 is on-load switch (isolating switch) handle holes, the 8th, and earthed switch handle hole.In Fig. 3, chain 5 of ring main unit ground connection has all been arranged in ring main unit mechanism with ring main unit ground connection locking plate connecting rod 6, and the state of Fig. 3 is, earthed switch closes a floodgate, and lower door-plate shuts.Now chain of ring main unit ground connection is not blocked ground connection handle hole 8, and handle is update smoothly.After lower door-plate is taken off, chain line can drive ring main unit ground connection locking plate connecting rod 5 motion, thereby makes the position shown in chain 6 to Fig. 4 of ring main unit ground connection, and now chain 6 of ring main unit ground connection is blocked earthed switch handle hole 8, operating grip cannot be inserted, can not operational grounding.
So ring main unit earthing interlocking device is installed, can effectively prevent that ring main unit is when ground state, lower door-plate is not shut, and grounding misoperation switch, protection operating personnel's personal safety.
A kind of earthing interlocking device for ring main unit of the present utility model is not limited to the syndeton of above-described embodiment, can carry out multiple modification, and in a word, all improvement within not departing from the utility model spirit scope all fall in scope of the present utility model.
Claims (3)
1. the earthing interlocking device for ring main unit, it is characterized in that, it comprises chain of ground connection and connecting rod, chain of described ground connection has connecting hole and location hole, on described connecting rod, also there is connecting hole and fixing hole, on chain of described ground connection location hole chain of ground connection is rotatably mounted in ring main unit, and connecting hole on it is connected to the connecting hole on described connecting rod one end, and the other end of described connecting rod is connected with the chain line in ring main unit.
2. the earthing interlocking device for ring main unit according to claim 1, is characterized in that, the connecting hole on described connecting rod and location hole lay respectively on the two ends of described connecting rod.
3. the earthing interlocking device for ring main unit according to claim 1, is characterized in that, chain upper connecting hole of described ground connection and location hole are positioned on one end of chain of described ground connection, and the other end is sheet free end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565371.5U CN203491523U (en) | 2013-09-12 | 2013-09-12 | Grounding interlocking device for ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565371.5U CN203491523U (en) | 2013-09-12 | 2013-09-12 | Grounding interlocking device for ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203491523U true CN203491523U (en) | 2014-03-19 |
Family
ID=50262326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320565371.5U Expired - Fee Related CN203491523U (en) | 2013-09-12 | 2013-09-12 | Grounding interlocking device for ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203491523U (en) |
-
2013
- 2013-09-12 CN CN201320565371.5U patent/CN203491523U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20210912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |