CN2867668Y - Interlocking device for preventing charged misconnecting earthed switch - Google Patents
Interlocking device for preventing charged misconnecting earthed switch Download PDFInfo
- Publication number
- CN2867668Y CN2867668Y CN 200620069617 CN200620069617U CN2867668Y CN 2867668 Y CN2867668 Y CN 2867668Y CN 200620069617 CN200620069617 CN 200620069617 CN 200620069617 U CN200620069617 U CN 200620069617U CN 2867668 Y CN2867668 Y CN 2867668Y
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- CN
- China
- Prior art keywords
- valve plate
- interlock
- plate
- cabinet
- earthed switch
- 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 relates to an interlocking device for preventing mis-operation of ground switch. The interlocking device includes a lower valve plate linkage mechanism comprising a pressure bar and a connecting rod sequentially hinged on both sides of a lower valve plate; and an upper valve plate linkage mechanism including an upper connecting rod, a ram and a lower connecting rod sequentially hinged on both sides of an upper valve plate, wherein the pressure bar is hinged on the stand of a cabinet at the other end and connected with the lower connecting rod. A soft shaft fixed on the upper part of the lower connecting rod or on one side of the ram is connected with a linkage plate provided in the cabinet through pulleys in the cabinet, and a spring is provided between the lower part of the linkage plate and the cabinet. When a breaker hand trolley is arranged on a working position, the linkage plate is provided on the operation hole of the ground switch on the cabinet to prevent an operation handle from being connected to a switch operation shaft through the hole, thereby effectively preventing mis-operation of the ground switch and improving safety of high- and middle-voltage switch device.
Description
Technical field
The utility model relates to a kind of switchgear, especially relates to a kind of interlock that prevents charged mistake splice grafting ground switch.
Background technology
The high pressure switchgear mainly is made of cabinet, the parts such as main bus bar, circuit breaker cart, instrument transformer, earthed switch, high-tension cable and instrument that are installed in the cabinet, circuit breaker cart bottom in the cabinet is provided with handcart advancing mechanism, the manual operation handcart advancing mechanism closes a floodgate circuit breaker cart after test position is pushed into the service position, or behind the separating brake circuit breaker cart is pushed back to test position from the service position.When handcart advancing mechanism is pushed into the service position with circuit breaker cart, the pressure wheel down-pressed pole of circuit breaker cart bottom, make valve plate and following valve plate upper and lower respectively mobile by upper and lower valve plate link gear, expose the fixed contact that is installed in the contact box, thus the engagement of realization and moving contact of breaker.Because the earthed switch main shaft is arranged in the cabinet, therefore be provided with an earthed switch handle hole at the tank bracket place of cabinet, the interior earthed switch main shaft of earthed switch operating axis and cabinet that is arranged in the tank bracket is connected, when the earthed switch operating grip passes handle hole on the tank bracket and is inserted on the earthed switch operating axis, the breaking-closing operating that can carry out ground connection and close.Because the ground connection handle hole place of tank bracket does not have baffle plate, switchgear is in the charging operation process, and the operator still can be inserted into the earthed switch operating grip and carry out imperative operation on the earthed switch operating axis, so exist serious potential safety hazard.
Summary of the invention
The purpose of this utility model has provided a kind of simple in structure, reliable operation, the safe interlock that prevents charged mistake splice grafting ground switch.
The utility model is that the technical scheme that achieves the above object is: a kind of interlock that prevents charged mistake splice grafting ground switch, comprise the following valve plate link gear that the depression bar that is hinged on down the valve plate both sides successively and connecting rod constitute, and the last connecting rod that is hinged on the valve plate both sides successively, the last valve plate link gear that rod and lower link constitute, the other end of described depression bar is hinged on the cabinet, and lower link and depression bar are hinged, it is characterized in that: in the described tank bracket pulley is housed, the flexible axle that one end is fixed on lower link top or rod one side is connected with interlock plate in being arranged on tank bracket by pulley, be provided with spring between the bottom of interlock plate and the tank bracket, circuit breaker cart is when the service position, and the interlock plate gets lodged in the earthed switch handle hole place of tank bracket.
The utility model is owing to set up a flexible axle on connecting rod or rod, and the other end of flexible axle is connected with the plate that links, and structure is very simple.When circuit breaker cart was positioned at test position, the interlock plate can not shelter from the earthed switch handle hole that is arranged on the tank bracket, so the handle hole that the earthed switch operating grip can pass on the tank bracket is inserted on the earthed switch operating axis, carries out the earthed switch breaking-closing operating.When handcart advancing mechanism is pushed into the service position with circuit breaker cart, the pressure wheel down-pressed pole of circuit breaker cart bottom, make upper and lower valve plate link gear interlock, at this moment, lower link in the last valve plate link gear or rod move and move on the pulling flexible axle, be pulled upwardly the interlock plate that is arranged on the tank bracket inboard, the interlock plate is got lodged in the earthed switch handle hole place of tank bracket, the earthed switch operating grip just can't be inserted on the earthed switch operating axis and the operational grounding switch like this, has prevented charged mistake splice grafting ground switch effectively.Interlock of the present utility model is simple in structure, reliable operation not only, and improved the safety in utilization of high pressure switchgear.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the side-looking structural representation of Fig. 1.
Wherein: the 1-tank bracket; The 2-circuit breaker cart; The 3-depression bar; The 4-lower link; The 5-connecting rod; Valve plate under the 6-; Contact box under the 7-; The 8-rod; The last connecting rod of 9-; The last valve plate of 10-; 11-upper contact head box; The 12-pulley; The outer pulley of 13-; The 14-flexible axle; The 15-plate that links; The 16-spring; The 17-spring base, the 18-cabinet.
Embodiment
As Fig. 1, shown in 2, the interlock that prevents charged mistake splice grafting ground switch of the present utility model, comprise the following valve plate link gear that the depression bar 3 that is hinged on down valve plate 6 both sides successively and connecting rod 5 constitute, and the last connecting rod 9 that is hinged on valve plate 10 both sides successively, the last valve plate link gear that rod 8 and lower link 4 constitute, rod 8 is hinged on the cabinet 18 by pivot pin, and the other end of depression bar 3 also is hinged on the support of tank bracket 1, the lower end of lower link 4 and depression bar 3 are hinged, last valve plate link gear and following valve plate link gear are positioned at the both sides of cabinet 18, keep synchronously for ease of regulating valve plate link gear and following valve plate link gear, lower link 4 is provided with 2～5 hinge holes, realizes synchronously by regulating articulated position different on rod 8 and the lower link 4.Upward valve plate 10 of the present utility model and following valve plate 6 lay respectively at the front portion of upper contact head box 11 and following contact box 7, and last valve plate 10 and following valve plate 6 are provided with the hinge hole more than 4～10, will go up connecting rod 9 and connecting rod 5 and be hinged on respectively on valve plate 10 and the following valve plate 6.See Fig. 1, shown in 2, pulley 12 is housed in tank bracket 1, and in tank bracket 1 outside, also be fixedly connected with the outer pulley 13 that play the guiding role on the cabinet 18, flexible axle 14 1 ends are fixed on lower link 4 tops or rod 8 one sides, the other end of flexible axle 14 is connected with interlock plate 15, flexible axle 14 is pressed on outer pulley 13 and the pulley 12, make flexible axle 14 be tension, when circuit breaker cart 2 is in test position, interlock plate 15 does not get lodged in the earthed switch handle hole of tank bracket 1, and can pass the ground connection operating grip earthed switch handle hole on the tank bracket 1 and insert on the earthed switch operating axis operational grounding switch this moment.
When handcart advancing mechanism with circuit breaker cart 2 when move the service position, the pressure wheel down-pressed pole 3 of circuit breaker cart 2 makes valve plate link gear and the interlock of following valve plate link gear, valve plate 10 and following valve plate 6 move up and down in the promotion, move by being connected on the flexible axle 14 pulling interlock plates 15 on lower link 4 tops or the rod 8 simultaneously, when circuit breaker cart arrives the service position, interlock plate 15 gets lodged in the earthed switch handle hole place of tank bracket 1 fully, the earthed switch operating grip just can't be inserted into operational grounding switch on the earthed switch operating axis, prevents charged mistake splice grafting ground switch.Also be provided with the earthed switch handle hole on the interlock plate 15 of the present utility model, when circuit breaker cart 2 was positioned at test position, the earthed switch handle hole on this interlock plate 15 was corresponding with the earthed switch handle hole on the tank bracket 1, can carry out the breaking-closing operating of earthed switch.When circuit breaker cart 2 after major loop is connected in the service position, the plate 15 that then links is blocked the earthed switch handle hole on the tank bracket 1, prevents charged mistake splice grafting ground switch.See shown in Figure 2ly, spring base 17 also is installed on the tank bracket 1, be provided with spring 16 between the bottom of interlock plate 15 and the spring base 17, the plate 15 that links is automatically reset by spring 16.
Claims (5)
1, a kind of interlock that prevents charged mistake splice grafting ground switch, comprise the following valve plate link gear that the depression bar (3) that is hinged on down valve plate (6) both sides successively and connecting rod (5) constitute, and the last connecting rod (9) that is hinged on valve plate (10) both sides successively, the last valve plate link gear that rod (8) and lower link (4) constitute, the other end of described depression bar (3) is hinged on the cabinet (18), and lower link (4) is hinged with depression bar (3), it is characterized in that: pulley (12) is housed in the described tank bracket (1), the flexible axle (14) that one end is fixed on lower link (4) top or rod (8) one sides is connected by pulley (12) the interlock plate (15) inboard with being arranged on tank bracket (1), be provided with spring (16) between the bottom of interlock plate (15) and the tank bracket (1), circuit breaker cart is when the service position, and interlock plate (15) gets lodged in the earthed switch handle hole place on the tank bracket (1).
2, the interlock that prevents charged mistake splice grafting ground switch according to claim 1, it is characterized in that: described interlock plate (15) is provided with the earthed switch handle hole, when circuit breaker cart was positioned at test position, the earthed switch handle hole on the interlock plate (15) was corresponding with the earthed switch handle hole on the tank bracket (1).
3, the interlock that prevents charged mistake splice grafting ground switch according to claim 1 is characterized in that: also be fixedly connected with the outer pulley (13) that play the guiding role on the described cabinet (18).
4, the interlock that prevents charged mistake splice grafting ground switch according to claim 1, it is characterized in that: described lower link (4) is provided with the hinge hole more than two.
5, the interlock that prevents charged mistake splice grafting ground switch according to claim 1 is characterized in that: the described hinge hole that is equipped with on valve plate (10) and the following valve plate (6) more than two of going up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069617 CN2867668Y (en) | 2006-02-27 | 2006-02-27 | Interlocking device for preventing charged misconnecting earthed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069617 CN2867668Y (en) | 2006-02-27 | 2006-02-27 | Interlocking device for preventing charged misconnecting earthed switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2867668Y true CN2867668Y (en) | 2007-02-07 |
Family
ID=37703373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069617 Expired - Fee Related CN2867668Y (en) | 2006-02-27 | 2006-02-27 | Interlocking device for preventing charged misconnecting earthed switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2867668Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373807A (en) * | 2016-06-13 | 2017-02-01 | 上海法腾电力科技有限公司 | Electrical cabinet with grounding interlock |
| CN109326982A (en) * | 2018-09-25 | 2019-02-12 | 颜全聪 | Handcart circuit breaker with interlocking limit self device |
| CN109599779A (en) * | 2018-12-31 | 2019-04-09 | 芜湖金牛电气股份有限公司 | High-voltage Incoming Cabinet and its working method with self-locking function |
| CN109802309A (en) * | 2018-12-31 | 2019-05-24 | 芜湖金牛电气股份有限公司 | High-voltage Incoming Cabinet and its working method with self-locking function |
-
2006
- 2006-02-27 CN CN 200620069617 patent/CN2867668Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373807A (en) * | 2016-06-13 | 2017-02-01 | 上海法腾电力科技有限公司 | Electrical cabinet with grounding interlock |
| CN106373807B (en) * | 2016-06-13 | 2018-05-15 | 上海法腾电力科技有限公司 | Equipped with the chain electrical cabinet of ground connection |
| CN109326982A (en) * | 2018-09-25 | 2019-02-12 | 颜全聪 | Handcart circuit breaker with interlocking limit self device |
| CN109326982B (en) * | 2018-09-25 | 2020-05-01 | 红光电气集团有限公司 | Handcart circuit breaker with interlocking limiting self-locking device |
| CN109599779A (en) * | 2018-12-31 | 2019-04-09 | 芜湖金牛电气股份有限公司 | High-voltage Incoming Cabinet and its working method with self-locking function |
| CN109802309A (en) * | 2018-12-31 | 2019-05-24 | 芜湖金牛电气股份有限公司 | High-voltage Incoming Cabinet and its working method with self-locking function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20120227 |