CN211088141U - Grounding switch with automatic reset mechanism for high-voltage cabinet - Google Patents
Grounding switch with automatic reset mechanism for high-voltage cabinet Download PDFInfo
- Publication number
- CN211088141U CN211088141U CN201922294053.XU CN201922294053U CN211088141U CN 211088141 U CN211088141 U CN 211088141U CN 201922294053 U CN201922294053 U CN 201922294053U CN 211088141 U CN211088141 U CN 211088141U
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- Prior art keywords
- disconnecting link
- switch
- contact
- knife switch
- rotating shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a grounding switch for high-voltage board with an automatic reset mechanism, which relates to the technical field of power equipment, and is characterized in that after a disconnecting link rotates to a certain angle, an elastic locating part on a disconnecting link side plate can automatically extend into a limiting hole on a disconnecting link support plate to play a role of limiting and locking, thereby ensuring that a moving contact is always kept in contact with a static contact, avoiding the situation that the disconnecting link is accidentally flicked or the disconnecting link is accidentally touched to cause the disconnecting link to flick, and ensuring the use safety; the disconnecting link can drive all moving contacts to synchronously rotate, so that the grounding switch is more convenient to open and close; the outer side of the switch support plate is also provided with a push block, the elastic limiting piece is pushed out from the limiting hole through the push block, and the switch can rotate at will at the moment so as to be convenient for resetting the moving contact; the knife switch is in a frame shape, a push rod is arranged at one end of the knife switch, and the knife switch can be pushed to rotate by applying force to the push rod, so that the knife switch can rotate more conveniently and labor-saving.
Description
Technical Field
The utility model relates to a power equipment technical field especially relates to earthing switch for high-voltage board with automatic re-setting mechanism.
Background
The grounding switch is a mechanical grounding device which releases static electricity of the equipment and the loop to be overhauled and ensures the personal safety of maintainers during power failure overhaul; it can withstand a certain time of current in abnormal situations (such as short circuit) but does not pass load current in normal situations; which is usually part of an isolating switch.
When the high-voltage cabinet needs to be overhauled, an electrical loop of the grounding switch needs to be grounded, an operator generally needs to pull a disconnecting link of the grounding switch to enable the movable contact to rotate to a certain position and then be combined with the fixed contact, sudden power supply in the overhauling process is prevented, and the switch can guide output load into the ground to avoid electric shock danger of workers; however, the existing earthing switch has no locking mechanism at the knife switch part, and when the knife switch is touched by people or accidentally bounced open, the static contact and the movable contact can be separated, so that safety accidents are further caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art's shortcoming, provide the earthing switch for the high-voltage board that has automatic re-setting mechanism.
In order to solve the technical problem, the technical scheme of the utility model as follows:
a grounding switch with an automatic reset mechanism for a high-voltage cabinet comprises a base plate, a plurality of static contacts fixedly arranged on the base plate and a plurality of moving contacts rotatably arranged on the base plate, wherein the moving contacts can rotate to be contacted with the static contacts, a disconnecting link is rotatably arranged on a frame and comprises a disconnecting link rotating shaft rotatably arranged on the base plate and disconnecting link side plates which are arranged at two ends of the disconnecting link rotating shaft and are vertical to the disconnecting link rotating shaft, one ends of the moving contacts are all fixed on the disconnecting link rotating shaft so that the disconnecting link can drive the moving contacts to rotate towards the static contacts, disconnecting link support plates vertical to the base plate are arranged outside the disconnecting link side plates on the base plate, one sides of the disconnecting link side plates facing the disconnecting link support plates are provided with elastic limiting parts capable of extending along the length direction of the disconnecting link rotating shaft, limiting holes for the elastic limiting parts to extend into are correspondingly arranged on, the elastic limiting part and the limiting hole are located on the same straight line, and the elastic limiting part automatically extends into the limiting hole.
As the utility model discloses earthing switch for high-voltage board's an preferred scheme, wherein: the elastic limiting part comprises a spring arranged along the length direction of the disconnecting link rotating shaft, one end of the spring is arranged in the disconnecting link side plate, and the other end of the spring is provided with a limiting clamping plate.
As the utility model discloses earthing switch for high-voltage board's an preferred scheme, wherein: the one end of spacing cardboard towards the switch extension board sets up to the arc.
As the utility model discloses earthing switch for high-voltage board's an preferred scheme, wherein: one side of the knife switch support plate, which is far away from the knife switch side plate, is provided with a push block which can extend into the limiting hole along the length direction of the knife switch rotating shaft.
As the utility model discloses earthing switch for high-voltage board's an preferred scheme, wherein: the section of the disconnecting link is in a frame shape, a push rod is arranged at one end of the disconnecting link, which is far away from a disconnecting link rotating shaft, and an insulating sleeve is sleeved on the push rod.
The utility model has the advantages that:
(1) after the disconnecting link of the utility model rotates to a certain angle, the elastic locating part on the disconnecting link side plate can automatically extend into the limiting hole on the disconnecting link support plate, thereby playing the role of limiting and locking, ensuring that the moving contact and the static contact are always kept in contact, avoiding the situation that the disconnecting link is opened by accident or the disconnecting link is opened by people touching the disconnecting link by accident, and ensuring the use safety;
(2) the utility model can drive all moving contacts to rotate synchronously, which makes the switch of the grounding switch more convenient;
(3) the utility model is also provided with a push block outside the switch support plate, which can push the push block into the limit hole, and push the elastic limit part out of the limit hole through the push block, at the moment, the switch can rotate at will, which is convenient for resetting the moving contact;
(4) the utility model discloses well switch is the frame shape, and is provided with the push rod in the one end of switch, can promote the switch rotation to the push rod application of force, makes the switch rotation more convenient laborsaving.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of an overall structure of a grounding switch for a high-voltage board according to the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a schematic structural view of an elastic limiting member of a grounding switch for a high-voltage board according to the present invention;
wherein: 1. a base plate; 2. static contact; 3. a moving contact; 4. a disconnecting link; 5. a knife switch rotating shaft; 6. a knife switch side plate; 7. a knife switch support plate; 8. an elastic limiting part; 9. a limiting hole; 10. a spring; 11. a limiting clamping plate; 12. a push block; 13. a push rod; 14. a support; 15. a return spring.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
When the high-voltage board needs to be overhauled, the grounding operation needs to be carried out on an electrical loop of the grounding switch, an operator generally needs to pull a disconnecting link of the grounding switch, the movable contact is combined with the fixed contact after rotating to a certain position, sudden power supply in the overhauling process is prevented, and the switch can guide output load into the ground to avoid electric shock danger of workers. However, the existing earthing switch has no locking mechanism at the knife switch part, and when the knife switch is touched by people or accidentally bounced open, the static contact and the movable contact can be separated, so that safety accidents are further caused.
Referring to fig. 1 to 3, in view of this, the present embodiment provides a grounding switch for a high voltage cabinet having an automatic reset mechanism, including a bottom plate 1, a plurality of static contacts 2 are sequentially arranged on the bottom plate 1 along a length direction thereof, and a plurality of moving contacts 3 are arranged on the bottom plate 1 corresponding to the static contacts 2.
A support 14 is provided on the base plate 1, and the knife switch 4 is rotatably mounted on the support 14. The section of the knife switch 4 is frame-shaped, and comprises a knife switch rotating shaft 5 which is rotatably arranged on the support 14 in a penetrating way, knife switch side plates 6 connected to two ends of the knife switch rotating shaft 5, and a connecting rod connected with the front ends of the knife switch side plates 6. A push rod 13 is arranged on the connecting rod, and an insulating sleeve is sleeved on the push rod 13. The knife gate 4 can be tilted back and forth on the base plate 1 about a knife gate axis of rotation 5. One end of the moving contact 3 is fixedly connected to a rotating shaft of the disconnecting link 4, and the disconnecting link 4 can drive all the moving contacts 3 to synchronously turn over in the turning process.
A return spring 15 is further disposed at the upper end of the support 14, and one end of the return spring 15 is fixedly connected to the support 14, and the other end is fixedly connected to the movable contact 3. The return spring 15 can apply a return pulling force to the movable contact 3.
The left side and the right side of the bottom plate 1 are both provided with knife switch support plates 7 perpendicular to the bottom plate 1, and the inner sides of the two knife switch support plates 7 are respectively attached to the outer sides of the two knife switch side plates 6. An elastic limiting part 8 is arranged on the outer side of the disconnecting link side plate 6, the elastic limiting part 8 comprises a spring 10, one end of the spring extends into the disconnecting link side plate 6, the spring 10 can stretch along the length direction parallel to the disconnecting link rotating shaft 5, and a limiting clamping plate 11 is fixedly connected to one end, extending out of the disconnecting link side plate 6, of the spring 10. Correspondingly, the knife switch support plate 7 is provided with a limit hole 9. In the process of turning over the disconnecting link side plate 6, when the elastic limiting part 8 is in contact with the disconnecting link support plate 7, the elastic limiting part 8 is compressed into the disconnecting link side plate 6 under the pressure of the disconnecting link support plate 7, when the disconnecting link 4 is turned over to drive the moving contact 3 to be in contact with the static contact 2, the elastic limiting part 8 is just positioned on the same straight line with the limiting hole 9, the spring 10 automatically extends out, the limiting clamping plate 11 automatically extends into the limiting hole 9, the limiting clamping plate 11 is matched with the limiting hole 9 at the moment, the side plate of the disconnecting link 4 is limited, and the disconnecting link 4 is locked at the current position.
It should be noted that one end of the limiting clamping plate 11 facing the support plate of the disconnecting link 4 is set to be arc-shaped, so that the limiting clamping plate 11 is stressed to extend and retract into the side plate of the disconnecting link 4 when the limiting clamping plate 11 is contacted with the support plate of the disconnecting link 4.
In addition, a push block 12 is arranged on the outer side of the support plate of the disconnecting link 4, one end of the push block 12 extends into the limiting hole 9, and the other end of the push block 12 extends to the outer side of the support plate of the disconnecting link 4. When the disconnecting link 4 needs to be reset, the push block 12 can be pushed into the limiting hole 9, the elastic limiting piece 8 is pushed out of the limiting hole 9 through the push block 12, and the disconnecting link 4 can rotate at will.
Therefore, the utility model discloses the spacing cardboard of accessible 11 cooperates with spacing hole 9, guarantees that moving contact 3 and static contact 2 remain the contact throughout, avoids appearing the unexpected condition of popping out of switch 4 or leading to switch 4 to pop out of switch 4 for touching switch 4 by accident, has guaranteed the security of using.
In addition to the above embodiments, the present invention may have other embodiments; all the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (5)
1. Earthing switch for high-voltage board with automatic re-setting mechanism, including bottom plate (1), fixed a plurality of static contact (2) that set up on bottom plate (1) and rotate and install a plurality of moving contact (3) on bottom plate (1), moving contact (3) rotatable to with static contact (2) contact, its characterized in that: the disconnecting link (4) is rotatably installed on the bottom plate (1), the disconnecting link (4) comprises a disconnecting link rotating shaft (5) rotatably arranged on the bottom plate (1) and disconnecting link side plates (6) which are arranged at two ends of the disconnecting link rotating shaft (5) and are perpendicular to the disconnecting link rotating shaft (5), one end of the moving contact (3) is fixed on the disconnecting link rotating shaft (5), so that the disconnecting link (4) can drive the moving contact (3) to rotate towards the fixed contact (2),
a knife switch support plate (7) perpendicular to the bottom plate (1) is arranged outside the knife switch side plate (6) on the bottom plate (1), an elastic limiting piece (8) capable of stretching along the length direction of the knife switch rotating shaft (5) is arranged on one side of the knife switch side plate (6) facing the knife switch support plate (7), a limiting hole (9) for the elastic limiting piece (8) to stretch into is correspondingly arranged on the knife switch side plate (6),
when the disconnecting link (4) drives the moving contact (3) to rotate to be in contact with the static contact (2), the elastic limiting part (8) and the limiting hole (9) are located on the same straight line, and the elastic limiting part (8) automatically extends into the limiting hole (9).
2. The grounding switch with automatic reset mechanism for high voltage cabinet as claimed in claim 1, wherein: the elastic limiting part (8) comprises a spring (10) arranged along the length direction of the disconnecting link rotating shaft (5), one end of the spring (10) is arranged in the disconnecting link side plate (6), and the other end of the spring is provided with a limiting clamping plate (11).
3. The grounding switch with automatic reset mechanism for high voltage cabinet as claimed in claim 2, wherein: one end, facing the knife switch support plate (7), of the limiting clamping plate (11) is arc-shaped.
4. The earthing switch for high-voltage board with automatic reset mechanism according to any one of claims 1 to 3, characterized in that: and a push block (12) which can extend into the limiting hole (9) along the length direction of the disconnecting link rotating shaft (5) is arranged on one side, far away from the disconnecting link side plate (6), of the disconnecting link support plate (7).
5. The grounding switch with automatic reset mechanism for high voltage cabinet as claimed in claim 1, wherein: the section shape of switch (4) is the frame shape, switch (4) are kept away from the one end of switch rotation axis (5) is provided with push rod (13), the cover is equipped with insulating cover on push rod (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922294053.XU CN211088141U (en) | 2019-12-19 | 2019-12-19 | Grounding switch with automatic reset mechanism for high-voltage cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922294053.XU CN211088141U (en) | 2019-12-19 | 2019-12-19 | Grounding switch with automatic reset mechanism for high-voltage cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211088141U true CN211088141U (en) | 2020-07-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922294053.XU Expired - Fee Related CN211088141U (en) | 2019-12-19 | 2019-12-19 | Grounding switch with automatic reset mechanism for high-voltage cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211088141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256021A (en) * | 2021-12-10 | 2022-03-29 | 国网河北省电力有限公司元氏县供电分公司 | An automatic circuit breaker to prevent accidental touch |
-
2019
- 2019-12-19 CN CN201922294053.XU patent/CN211088141U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256021A (en) * | 2021-12-10 | 2022-03-29 | 国网河北省电力有限公司元氏县供电分公司 | An automatic circuit breaker to prevent accidental touch |
| CN114256021B (en) * | 2021-12-10 | 2023-07-21 | 国网河北省电力有限公司元氏县供电分公司 | An automatic electric switch to prevent accidental touch |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |