CN203193163U - Interlocking device used for drawer type breaker - Google Patents
Interlocking device used for drawer type breaker Download PDFInfo
- Publication number
- CN203193163U CN203193163U CN201320085661XU CN201320085661U CN203193163U CN 203193163 U CN203193163 U CN 203193163U CN 201320085661X U CN201320085661X U CN 201320085661XU CN 201320085661 U CN201320085661 U CN 201320085661U CN 203193163 U CN203193163 U CN 203193163U
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- CN
- China
- Prior art keywords
- support
- interlock
- drawer type
- circuit breaker
- interlocking device
- 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 - Lifetime
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Abstract
The utility model relates to an interlocking device used for a drawer type breaker. A drawer type breaker comprises a breaker body and a drawer type socket, the breaker body is equipped with isolating moving contacts, and the drawer type socket is equipped with operating handles and isolating fixed contacts matching the isolating moving contacts. The interlocking device comprises a mandril, a support, locking buckling plates and an interlocking mechanism. The support is connected with the breaker body, one end of the mandril is connected with the interlocking mechanism, and the other end penetrates the support to be contacted with the breaker body; the interlocking mechanism is connected with the support, and the locking buckling plates are connected with the drawer type socket. When the interlocking device is in an interlocking state, the locking buckling plates are connected with the support and are locked via the interlocking mechanism. Compared with the prior art, the interlocking device used for the drawer type breaker of the utility model has the advantages of simple structure, high reliability, etc., and can satisfy the requirement that the isolating contacts of the drawer type breaker enable a loaded electrical loop not to be switched on or cut off.
Description
Technical field
The utility model relates to a kind of breaker structure, especially relates to a kind of interlock for withdrawable circuit breaker.
Background technology
The drawer type breaker of plastic casing is made up of breaker body and drawer type socket two large divisions, it in use, can disconnect electric loop by the circuit breaker main contact, form the breaking point in a loop, also can disconnect electric loop by the insulating contact that the tie point of breaker body and drawer type socket is formed.But insulating contact can not be switched on or switched off the electric loop that carries, therefore, need an interlock to guarantee insulating contact when being switched on or switched off electric loop, the main contact of circuit breaker is in off-state, operates under the situation of zero load to guarantee insulating contact.
The interlock of existing withdrawable circuit breaker is whether to be embodied by the release lever effect of the push rod that stretches out from the circuit breaker bottom to circuit breaker operation mechanism, when push rod is in when stretching out state, just stop breaker closing, and make the circuit breaker main contact be in off-state, when circuit breaker is contained on the pull-out type base, push push rod when pushing circuit breaker, push rod discharges release lever, and circuit breaker just can carry out closing operation.Though this structure can guarantee circuit breaker and insert or extract operation under the situation that main contact separates, there are push rod easily deviation position or the shortcoming that fractures in the course of the work.
Summary of the invention
The purpose of this utility model is exactly that a kind of simple in structure, interlock that is used for withdrawable circuit breaker that reliability is high is provided in order to overcome the defective that above-mentioned prior art exists, and the insulating contact that this device has satisfied withdrawable circuit breaker can not be switched on or switched off the requirement in on-board electrical loop.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of interlock for withdrawable circuit breaker, described withdrawable circuit breaker comprises breaker body and drawer type socket, described breaker body is provided with the isolation moving contact, the isolation fixed contact that described drawer type socket is provided with operating grip and is complementary with the isolation moving contact, described interlock comprises push rod, support, locking board and interlocking device, described support is connected with breaker body, described push rod one end is connected with interlocking device, the other end passes support and contacts with breaker body, described interlocking device is connected with support, described locking board is connected with the drawer type socket, when interlock is in Interlock Status, locking board is connected with support, and locks by interlocking device.
Described interlocking device comprises guide plate, connecting rod, steady pin and torsion spring, described guide plate one end is connected with push rod by pivot pin, the other end is connected with connecting rod, guide plate rotates around pivot pin, described guide plate is connected with support by steady pin, guide plate can rotate around steady pin, and described torsion spring is located on the steady pin, and is connected with guide plate.
Described support is the reverse U shape shape, and described connecting rod is across the both sides at support.
Described top of the trellis is provided be used to the through hole that passes push rod, and the support bilateral symmetry is provided be used to the waist-shaped hole that passes connecting rod.
Described locking board is welded by two L structural sections of mirror image.
Described locking board is provided with for the groove by connecting rod, and the waist-shaped hole on this groove and the support is complementary.
Compared with prior art, the utlity model has following advantage:
1, the utility model is simple in structure, only needs can interlock to withdrawable circuit breaker by the cooperation of push rod, interlocking device and locking board, when breaker body is in "on" position, makes the insulating contact can not be closed or separate;
2, the utility model detects the mechanical location of main contact in the breaker body by push rod, and to change interlock according to the state of push rod be to be in Interlock Status or released state, the reliability height, satisfied the requirement that insulating contact can not be switched on or switched off the electric loop that carries, guaranteed that electric equipment moves safely and reliably;
3, locking board of the present utility model is welded as a whole by two L structural sections of mirror image, has the effect that enough mechanical strengths are born operating physical force.
Description of drawings
Fig. 1 is the utility model end view;
Fig. 2 is the structure cutaway view of the utility model released state;
Fig. 3 is the structure cutaway view of the utility model Interlock Status;
Fig. 4 is the utility model split schematic diagram;
Fig. 5 is the structural representation of withdrawable circuit breaker.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.Present embodiment is that prerequisite is implemented with technical solutions of the utility model, provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Embodiment
As Fig. 1-shown in Figure 5, a kind of interlock for withdrawable circuit breaker, withdrawable circuit breaker comprises breaker body 9 and drawer type socket 11, breaker body 9 is provided with main contact and isolates moving contact 12, the isolation fixed contact 13 that drawer type socket 11 is provided with operating grip 10 and is complementary with isolation moving contact 12, interlock comprises push rod 1, support 2, locking board 8 and interlocking device, support 2 is connected with breaker body 9, push rod 1 one ends are connected with interlocking device, the other end passes support 2 and contacts with breaker body 9, interlocking device is connected with support 2, locking board 8 is connected with drawer type socket 11, when interlock was in Interlock Status, locking board 8 was connected with support 2, and locks by interlocking device.
Interlocking device comprises guide plate 6, connecting rod 5, steady pin 4 and torsion spring 7, guide plate 6 one ends are connected with push rod 1 by pivot pin 3, the other end is connected with connecting rod 5, guide plate 6 is around pivot pin 3 rotations, guide plate 6 is connected with support 2 by steady pin 4, guide plate 6 can be around steady pin 4 rotations, and torsion spring 7 is located on the steady pin 4, and is connected with guide plate 6.
Operating grip 10 operating breaker bodies 9 on drawer type socket 11, when isolating the motion of moving contact 12, the operating physical force of its generation can not be applied to push rod 1 and withdrawable circuit breaker, makes the operating characteristics of circuit breaker can not be subjected to external influence and changes.
Above-mentioned interlock is by utilizing withdrawable circuit breaker and close a floodgate and the diverse location of main contact during separating brake, change the state variation of interlock, realize when withdrawable circuit breaker closes a floodgate, keep original state between its breaker body and the drawer type socket, namely be in connection status originally, it can not be separated, otherwise guarantee that then it can not connect.Guaranteed that circuit breaker is when work, the electric current that has only killer switch moving contact energy break-make current supply circuit, and insulating contact does not only have the operation that just can connect and disconnect under the situation of electric current in the loop, guaranteed operator's personal safety and the security of operation of electric equipment.
As shown in Figure 2, this moment, breaker body 9 was in connection status with drawer type socket 11, isolated moving contact 12 and was in closure state with isolation fixed contact 13, and the circuit breaker main contact is in gate-dividing state.At this state, the operating grip 10 of operating drawer formula socket 11 can make breaker body 9 and drawer type socket 11 disconnect, and can move to Fig. 4 and position shown in Figure 5 always, isolates moving contact 12 and disconnects fully with isolation fixed contact 13.
As Fig. 2-shown in Figure 4, when breaker closing, the main contact of circuit breaker will promote push rod 1 and down move, guide plate 6 is rotated counterclockwise around steady pin 4, connecting rod 5 moves to the snap close position A of locking board 8, at this state, when the operating grip 10 of operating drawer formula socket 11 separates breaker body 9 with drawer type socket 11, connecting rod 5 will be subjected to the restriction of locking board 8, also limited simultaneously the separation of breaker body 9, the isolation moving contact 12 of withdrawable circuit breaker can not disconnect with isolation fixed contact 13.Realized when breaker closing, isolating the indissociable interlock of contact.
Isolating contact when another interlock is breaker closing can not be closed, it is achieved in that as shown in Figure 4, when breaker closing, connecting rod 5 moves to the snap close position B of locking board 8, at this state, when the operating grip 10 of operating drawer formula socket 11 is closed with breaker body 9 and drawer type socket 11, connecting rod 5 will be subjected to the restriction of locking board 8, also limited simultaneously being connected of breaker body 9 and drawer type socket 11, the isolation moving contact 12 of withdrawable circuit breaker with isolate fixed contact 13 can not closure.Having realized isolating when breaker closing contact can not closed interlock.
During breaker closing, interlock is in the snap close position, the operating physical force that this moment, operating grip 10 produced only acts between support 2, connecting rod 5, the locking board 8, and push rod 1 is not subjected to the influence of this operating physical force, so circuit breaker also can not be subjected to the influence of this operating physical force and misoperation.Support 2 adopts U font formulas, and connecting rod 5 is across in support 2 left and right sides, and two L shaped steel plates of locking board 8 usefulness mirror images are integrally welded, guaranteed interlock when the snap close position, and its parts have the operating physical force that enough mechanical strengths are born operating grip 10.
After the utility model adopts above-mentioned mechanical structure, realized the interlock of drawer type breaker of plastic casing, the insulating contact that has satisfied the drawer type socket can not be switched on or switched off the requirement of the electric loop that carries, and has guaranteed that electric equipment moves safely and reliably.
Claims (6)
1. interlock that is used for withdrawable circuit breaker, described withdrawable circuit breaker comprises breaker body (9) and drawer type socket (11), described breaker body (9) is provided with isolates moving contact (12), the isolation fixed contact (13) that described drawer type socket (11) is provided with operating grip (10) and is complementary with isolation moving contact (12), it is characterized in that, described interlock comprises push rod (1), support (2), locking board (8) and interlocking device, described support (2) is connected with breaker body (9), described push rod (1) one end is connected with interlocking device, the other end passes support (2) and contacts with breaker body (9), described interlocking device is connected with support (2), described locking board (8) is connected with drawer type socket (11), when interlock is in Interlock Status, locking board (8) is connected with support (2), and locks by interlocking device.
2. a kind of interlock for withdrawable circuit breaker according to claim 1, it is characterized in that, described interlocking device comprises guide plate (6), connecting rod (5), steady pin (4) and torsion spring (7), described guide plate (6) one ends are connected with push rod (1) by pivot pin (3), the other end is connected with connecting rod (5), guide plate (6) rotates around pivot pin (3), described guide plate (6) is connected with support (2) by steady pin (4), guide plate (6) can rotate around steady pin (4), described torsion spring (7) is located on the steady pin (4), and is connected with guide plate (6).
3. a kind of interlock for withdrawable circuit breaker according to claim 1 is characterized in that, described support (2) is the reverse U shape shape, and described connecting rod (5) is across the both sides in support (2).
4. a kind of interlock for withdrawable circuit breaker according to claim 3 is characterized in that, described support (2) top is provided be used to the through hole that passes push rod (1), and support (2) bilateral symmetry is provided be used to the waist-shaped hole that passes connecting rod (5).
5. a kind of interlock for withdrawable circuit breaker according to claim 1 is characterized in that, described locking board (8) is welded by two L structural sections of mirror image.
6. a kind of interlock for withdrawable circuit breaker according to claim 4 is characterized in that, described locking board (8) is provided with for the groove by connecting rod (5), and the waist-shaped hole on this groove and the support (2) is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320085661XU CN203193163U (en) | 2013-02-25 | 2013-02-25 | Interlocking device used for drawer type breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320085661XU CN203193163U (en) | 2013-02-25 | 2013-02-25 | Interlocking device used for drawer type breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203193163U true CN203193163U (en) | 2013-09-11 |
Family
ID=49109993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320085661XU Expired - Lifetime CN203193163U (en) | 2013-02-25 | 2013-02-25 | Interlocking device used for drawer type breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203193163U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124635A (en) * | 2014-07-04 | 2014-10-29 | 福建森达电气股份有限公司 | Low-voltage distribution cabinet drawer operation interlocking mechanism |
| CN104348104A (en) * | 2014-06-24 | 2015-02-11 | 国家电网公司 | Switch cabinet |
| CN113067275A (en) * | 2021-03-08 | 2021-07-02 | 国网新疆电力有限公司喀什供电公司 | Intelligent switch cabinet for transformer substation |
-
2013
- 2013-02-25 CN CN201320085661XU patent/CN203193163U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348104A (en) * | 2014-06-24 | 2015-02-11 | 国家电网公司 | Switch cabinet |
| CN104348104B (en) * | 2014-06-24 | 2017-08-11 | 国家电网公司 | A kind of switch cubicle |
| CN104124635A (en) * | 2014-07-04 | 2014-10-29 | 福建森达电气股份有限公司 | Low-voltage distribution cabinet drawer operation interlocking mechanism |
| CN104124635B (en) * | 2014-07-04 | 2016-04-27 | 福建森达电气股份有限公司 | Low-voltage distribution cabinet drawer operation interlocking mechanism |
| CN113067275A (en) * | 2021-03-08 | 2021-07-02 | 国网新疆电力有限公司喀什供电公司 | Intelligent switch cabinet for transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |
|
| CX01 | Expiry of patent term |