CN113675777B - Intelligent locking error-preventing device and error-preventing ring main unit - Google Patents
Intelligent locking error-preventing device and error-preventing ring main unit Download PDFInfo
- Publication number
- CN113675777B CN113675777B CN202110969413.0A CN202110969413A CN113675777B CN 113675777 B CN113675777 B CN 113675777B CN 202110969413 A CN202110969413 A CN 202110969413A CN 113675777 B CN113675777 B CN 113675777B
- Authority
- CN
- China
- Prior art keywords
- limiting rod
- box body
- cabinet door
- misoperation
- rod
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to an intelligent locking error-preventing device and an error-preventing ring main unit, wherein the intelligent locking error-preventing device is arranged in a box body, a cabinet door capable of being opened and closed is rotatably arranged on the box body, and a circuit breaker for controlling circuit on-off is fixedly arranged in the box body, and the intelligent locking error-preventing device comprises: the limiting rod is movably arranged in the box body; the elastic mechanism is arranged in the box body and connected with the limiting rod, and the elastic mechanism is used for enabling the limiting rod to have a force acting upwards on the circuit breaker so as to avoid misoperation of an maintainer; the pressing mechanism is arranged in the box body and matched with the elastic mechanism, and is used for driving the limiting rod to move upwards in the process of opening the cabinet door, and enabling the limiting rod to be abutted with the circuit breaker when the cabinet door is completely opened, so that misoperation in the process of overhauling is avoided.
Description
Technical Field
The invention relates to the field of ring main units, in particular to an intelligent locking error-preventing device and an error-preventing ring main unit.
Background
The ring main unit is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled spacing ring main power supply unit, and the core part of the ring main unit adopts a load switch and a fuse, and has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. It is widely used in distribution stations of load centers such as urban residential communities, high-rise buildings, large public buildings, factory enterprises and the like, and box-type substations.
In the daily maintenance process of the ring main unit, because the misoperation of maintenance personnel is extremely easy to cause electric power accidents, in order to reduce the occurrence of the accidents, we provide an intelligent locking misoperation-preventing device and an misoperation-preventing ring main unit.
Disclosure of Invention
The invention aims to provide an intelligent locking error-preventing device and an error-preventing ring main unit, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an intelligent locking error-preventing device is installed in a box body, a cabinet door capable of being opened and closed is rotatably installed on the box body, a circuit breaker used for controlling circuit on-off is fixedly installed in the box body, and the intelligent locking error-preventing device comprises:
the limiting rod is movably arranged in the box body and used for preventing an maintainer from misoperation to disconnect a switch on the circuit breaker when the cabinet door is opened;
the elastic mechanism is arranged in the box body and connected with the limiting rod, and the elastic mechanism is used for enabling the limiting rod to have a force acting upwards on the circuit breaker so as to avoid misoperation of an maintainer;
the pressing mechanism is arranged in the box body and matched with the elastic mechanism, and is used for driving the limiting rod to move upwards in the process of opening the cabinet door and enabling the limiting rod to be in butt joint with the circuit breaker when the cabinet door is completely opened.
As a further scheme of the invention: the elastic mechanism comprises a mounting plate fixedly mounted in the box body and a recovery structure symmetrically mounted on the mounting plate;
the restoring structure is in rolling connection with the pushing mechanism, and the restoring structure is connected with the limiting rod through two symmetrically arranged connecting plates.
As still further aspects of the invention: the restoring structure comprises a guide rod fixedly installed on the mounting plate, a first spring sleeved on the guide rod and a transverse plate arranged on the guide rod in a sliding manner and abutted with the first spring;
the transverse plate is in rolling connection with the pressing mechanism, and two connecting plates are symmetrically and fixedly arranged on the transverse plate.
As still further aspects of the invention: the pushing mechanism comprises a driving structure arranged between the cabinet door and the box body, a bevel gear set which is connected with the driving structure through a first belt and is rotatably arranged in the box body, and a yielding structure which is arranged between the box body and the transverse plate and is connected with the bevel gear set through a second belt.
As still further aspects of the invention: the driving structure comprises an incomplete gear fixedly connected with the cabinet door and a complete gear meshed with the incomplete gear and rotatably installed in the box body, and the complete gear is connected with the bevel gear set through the first belt;
wherein, incomplete gear with the pivot of cabinet door is coaxial setting.
As still further aspects of the invention: the yielding structure comprises a baffle fixedly installed in the box body, a cam connected with the bevel gear set through a second belt and rotatably installed on the baffle, and a first pulley rotatably installed on the transverse plate and in rolling connection with the cam.
An anti-misoperation ring main unit, the anti-misoperation ring main unit comprises the intelligent locking anti-misoperation device, and further comprises:
the locking assembly is arranged at one end of the limiting rod and used for adjusting the position of the limiting rod;
the transparent window is fixedly arranged on the cabinet door.
As still further aspects of the invention: the locking assembly comprises a round cavity arranged at one end of the limiting rod, a second spring arranged in the round cavity, a locking rod connected with the second spring and movably arranged through the round cavity, a second pulley rotatably arranged at one end of the locking rod far away from the second spring, and a limiting groove arranged on the connecting plate and adapted to the second pulley;
the other end of the limiting rod is rotationally connected with the other connecting plate, a through groove penetrating through the circular cavity is formed in the limiting rod, the second spring is connected with the locking rod through a limiting plate, and a protrusion penetrating through the through groove is fixedly arranged on the limiting plate.
Compared with the prior art, the invention has the beneficial effects that:
when the ring main unit is overhauled in daily life, the pressing mechanism is matched with the elastic mechanism when the cabinet door is completely opened, so that the limit rod acts on the switch of the circuit breaker, and unnecessary electric accidents caused by misoperation of overhaulers are avoided;
meanwhile, when the circuit breaker is subjected to a self-breaking phenomenon, due to the existence of the structure, when the cabinet door is opened, the short-circuiting device is driven to transmit power again, so that an maintainer can observe through the transparent window first and open the transparent window when needed, and the position of the limiting rod is changed through the locking assembly, so that the limiting rod cannot directly act on the short-circuiting device when the cabinet door is opened.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an intelligent lock anti-misoperation device and an anti-misoperation ring main unit.
Fig. 2 is a schematic diagram illustrating a bottom view of an embodiment of an intelligent lock anti-misoperation device and an anti-misoperation ring main unit.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Fig. 4 is a schematic diagram of an explosion of a locking assembly in one embodiment of an intelligent lock anti-misoperation device and an anti-misoperation ring main unit.
In the figure: 1-box, 2-cabinet door, 3-incomplete gear, 4-complete gear, 5-circuit breaker, 6-first belt, 7-bevel gear group, 8-baffle, 9-second belt, 10-cam, 11-diaphragm, 12-first pulley, 13-connecting plate, 14-gag lever post, 15-guide bar, 16-first spring, 17-through groove, 18-second spring, 19-gag lever plate, 20-locking bar, 21-second pulley, 22-protrusion.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 4, in the embodiment of the present invention, an intelligent locking error preventing device is installed in a box 1, a cabinet door 2 capable of being opened and closed is rotatably installed on the box 1, and a circuit breaker 5 for controlling on-off of a circuit is fixedly installed in the box 1, and the intelligent locking error preventing device includes:
the limiting rod 14 is movably arranged in the box body 1 and is used for preventing an maintainer from misoperation to disconnect a switch on the circuit breaker 5 when the cabinet door 2 is opened;
the elastic mechanism is arranged in the box body 1 and is connected with the limiting rod 14, and the elastic mechanism is used for enabling the limiting rod 14 to have a force acting upwards on the circuit breaker 5 so as to avoid misoperation of an overhaul worker;
the pressing mechanism is arranged in the box body 1, is matched with the elastic mechanism, and is used for driving the limiting rod 14 to move upwards in the process of opening the cabinet door 2, and enabling the limiting rod 14 to be abutted with the circuit breaker 5 when the cabinet door 2 is completely opened.
In the embodiment of the invention, when the ring main unit is overhauled in daily life, the pressing mechanism is matched with the elastic mechanism when the cabinet door 2 is completely opened, so that the limit rod 14 acts on the switch of the circuit breaker 5, and unnecessary power accidents caused by misoperation of overhaulers are avoided.
As an embodiment of the present invention, the elastic mechanism comprises a mounting plate fixedly mounted in the case 1, and a recovery structure symmetrically mounted on the mounting plate;
the restoring structure is in rolling connection with the pushing mechanism, and the restoring structure is connected with the limiting rod 14 through two symmetrically arranged connecting plates 13;
the restoring structure comprises a guide rod 15 fixedly installed on the mounting plate, a first spring 16 sleeved on the guide rod 15, and a transverse plate 11 slidably arranged on the guide rod 15 and abutted against the first spring 16;
the transverse plate 11 is in rolling connection with the pushing mechanism, and two connecting plates 13 are symmetrically and fixedly arranged on the transverse plate 11;
the pushing mechanism comprises a driving structure arranged between the cabinet door 2 and the box body 1, a bevel gear set 7 which is connected with the driving structure through a first belt 6 and is rotatably arranged in the box body 1, and a yielding structure which is arranged between the box body 1 and the transverse plate 11 and is connected with the bevel gear set 7 through a second belt 9;
the driving structure comprises an incomplete gear 3 fixedly connected with the cabinet door 2 and a complete gear 4 meshed with the incomplete gear 3 and rotatably installed in the box body 1, and the complete gear 4 is connected with the bevel gear set 7 through the first belt 6;
wherein, the incomplete gear 3 and the rotating shaft of the cabinet door 2 are coaxially arranged;
the yielding structure comprises a baffle plate 8 fixedly installed in the box body 1, a cam 10 which is connected with the bevel gear set 7 through a second belt 9 and is rotatably installed on the baffle plate 8, and a first pulley 12 which is rotatably installed on the transverse plate 11 and is in rolling connection with the cam 10;
the bevel gear set 7 comprises a first bevel gear rotatably mounted on the box body 1, a second bevel gear meshed with the first bevel gear and rotatably mounted on the baffle plate 8, wherein the first bevel gear is connected with the full gear 4 through a first belt 9, and the second bevel gear is connected with the cam 10 through a second belt 9.
In the embodiment of the invention, in an initial state, namely, in the case that the cabinet door 2 is closed, the long axis of the cam 1 acts on the first pulley 12 downwards, and the first spring 16 is compressed by the transverse plate 11, so that the switch of the circuit breaker 5 can be automatically opened or closed according to the working characteristics of the circuit breaker;
in the process of opening the cabinet door 2, the incomplete gear 3 rotates along with the rotating shaft of the cabinet door 2 and rotates with the complete gear 4 meshed with the incomplete gear, the complete gear 4 drives the cam 10 to rotate through the first belt 6, the bevel gear set 7 and the second belt 9, the connection part of the cam 10 and the first pulley 12 is changed into a short shaft from the long shaft of the cam 10, at the moment, the first spring 16 releases elastic potential energy, the transverse plate 11 moves upwards, the limiting rod 14 moves upwards through the connecting plate 13, and when the outer ring of the cabinet door 2 is opened, the limiting rod 14 just abuts against a switch of the circuit breaker 5.
The above-mentioned incomplete gear 3 is toothless only in the region where it coincides with the cabinet door 2.
Wherein the circuit breaker 5 is mounted on the mounting plate.
As an embodiment of the present invention, there is further provided an anti-misoperation ring main unit, where the anti-misoperation ring main unit includes the intelligent locking anti-misoperation device, and further includes:
the locking component is arranged at one end of the limiting rod 14 and is used for adjusting the position of the limiting rod 14;
the transparent window is fixedly arranged on the cabinet door 2;
the locking assembly comprises a round cavity arranged at one end of the limiting rod 14, a second spring 18 arranged in the round cavity, a locking rod 20 connected with the second spring 18 and movably arranged through the round cavity, a second pulley 21 rotatably arranged at one end of the locking rod 20 far away from the second spring 18, and a limiting groove formed on the connecting plate 13 and matched with the second pulley 21;
the other end of the limiting rod 14 is rotatably connected with the other connecting plate 13, a through groove 17 penetrating through the circular cavity is formed in the limiting rod 14, the second spring 18 is connected with the locking rod 20 through a limiting plate 19, and a protrusion 22 penetrating through the through groove 17 is fixedly mounted on the limiting plate 19.
In the embodiment of the present invention, when the circuit breaker 5 generates a self-breaking phenomenon, due to the existence of the structure, the short-circuiting device 5 is easily powered on again passively when the cabinet door 2 is opened, therefore, an maintainer can observe through the transparent window first, and open the transparent window when needed, and the position of the limiting rod 14 is changed through the locking assembly, so that the limiting rod 14 does not directly act on the short-circuiting device 5 when the cabinet door 2 is opened, and the specific steps are as follows:
when the circuit breaker 5 is in a self-breaking phenomenon, and an maintainer knows the state of the circuit breaker 5 through the transparent window, the transparent window is opened through a key, a special tool is used for acting on the protrusion 22 to enable the protrusion 22 to move towards one end of the limiting rod 14 hinged with the connecting plate 13, the pulley 21 is separated from the limiting groove on the connecting plate 13, and at the moment, the cabinet door 2 is opened again, so that the phenomenon of passive power transmission of the circuit breaker 5 can not occur.
Furthermore, when the maintenance personnel overhauls the ring main unit, the power-off processing of the circuit breaker 5 can be completed through the steps when the switch of the circuit breaker 5 is really needed to be closed.
The protrusion 22 is very small, so that the protrusion 22 is prevented from being touched by mistake to a certain extent when overhauling by an overhauling staff, the limit rod 14 is externally changed, and the switch of the circuit breaker 5 is closed when in secondary misoperation.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. The utility model provides an intelligence shutting error proofing device installs in box (1), but rotation is installed on box (1) cabinet door (2) of switching, just still fixed mounting has circuit breaker (5) that are used for the control circuit break-make in box (1), its characterized in that, intelligence shutting error proofing device includes:
the limiting rod (14) is movably arranged in the box body (1) and is used for preventing an maintainer from misoperation when the cabinet door (2) is opened to disconnect a switch on the circuit breaker (5);
the elastic mechanism is arranged in the box body (1) and is connected with the limiting rod (14), and the elastic mechanism is used for enabling the limiting rod (14) to have a force acting upwards on the circuit breaker (5) so as to avoid misoperation of an maintainer;
the pressing mechanism is arranged in the box body (1), is matched with the elastic mechanism, and is used for driving the limiting rod (14) to move upwards in the process of opening the cabinet door (2) and enabling the limiting rod (14) to be abutted with the circuit breaker (5) when the cabinet door (2) is completely opened;
the elastic mechanism comprises a mounting plate fixedly mounted in the box body (1) and a recovery structure symmetrically mounted on the mounting plate;
the restoring structure is in rolling connection with the pushing mechanism, and the restoring structure is connected with the limiting rod (14) through two symmetrically arranged connecting plates (13);
the recovery structure comprises a guide rod (15) fixedly installed on the mounting plate, a first spring (16) sleeved on the guide rod (15), and a transverse plate (11) slidably arranged on the guide rod (15) and abutted with the first spring (16);
the transverse plate (11) is in rolling connection with the pushing mechanism, and two connecting plates (13) are symmetrically and fixedly arranged on the transverse plate (11);
the pushing mechanism comprises a driving structure arranged between the cabinet door (2) and the box body (1), a bevel gear set (7) connected with the driving structure through a first belt (6) and rotatably arranged in the box body (1), and a stepping-down structure arranged between the box body (1) and the transverse plate (11) and connected with the bevel gear set (7) through a second belt (9);
the driving structure comprises an incomplete gear (3) fixedly connected with the cabinet door (2), and a complete gear (4) meshed with the incomplete gear (3) and rotatably installed in the box body (1), and the complete gear (4) is connected with the bevel gear set (7) through the first belt (6);
wherein, the incomplete gear (3) and the rotating shaft of the cabinet door (2) are coaxially arranged.
2. The intelligent locking error-preventing device according to claim 1, wherein the yielding structure comprises a baffle (8) fixedly installed in the box body (1), a cam (10) connected with the bevel gear set (7) through a second belt (9) and rotatably installed on the baffle (8), and a first pulley (12) rotatably installed on the transverse plate (11) and in rolling connection with the cam (10).
3. An anti-misoperation ring main unit, which comprises the intelligent locking anti-misoperation device as claimed in any one of claims 1 to 2, and is characterized by further comprising:
the locking assembly is arranged at one end of the limiting rod (14) and is used for adjusting the position of the limiting rod (14);
the transparent window is fixedly arranged on the cabinet door (2).
4. The misoperation prevention ring main unit according to claim 3, wherein the locking component comprises a round cavity arranged at one end of the limiting rod (14), a second spring (18) arranged in the round cavity, a locking rod (20) connected with the second spring (18) and movably arranged through the round cavity, a second pulley (21) rotatably arranged at one end, far away from the second spring (18), of the locking rod (20), and a limiting groove formed in the connecting plate (13) and matched with the second pulley (21);
the other end of the limiting rod (14) is rotationally connected with the other connecting plate (13), a through groove (17) penetrating through the circular cavity is formed in the limiting rod (14), the second spring (18) is connected with the locking rod (20) through a limiting plate (19), and a protrusion (22) penetrating through the through groove (17) is fixedly arranged on the limiting plate (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110969413.0A CN113675777B (en) | 2021-08-23 | 2021-08-23 | Intelligent locking error-preventing device and error-preventing ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110969413.0A CN113675777B (en) | 2021-08-23 | 2021-08-23 | Intelligent locking error-preventing device and error-preventing ring main unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113675777A CN113675777A (en) | 2021-11-19 |
| CN113675777B true CN113675777B (en) | 2023-09-12 |
Family
ID=78545293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110969413.0A Active CN113675777B (en) | 2021-08-23 | 2021-08-23 | Intelligent locking error-preventing device and error-preventing ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113675777B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883958B (en) * | 2022-07-11 | 2022-09-30 | 广东电网有限责任公司肇庆供电局 | Automatic control box for power distribution network |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464707A (en) * | 2016-06-02 | 2017-12-12 | 湖北网安科技有限公司 | A kind of protection blocking mechanism for high-voltage ring main unit |
| CN210110585U (en) * | 2019-06-28 | 2020-02-21 | 国网甘肃省电力公司白银供电公司 | Anti-misoperation device for earthing switch of ring main unit |
| CN210273124U (en) * | 2019-09-12 | 2020-04-07 | 沈阳精锐科技有限公司 | Interlocking device of high-voltage board |
| CN111721387A (en) * | 2020-06-26 | 2020-09-29 | 徐俊俊 | Overweight detection warning mechanism for bridge safety |
| CN112033614A (en) * | 2020-08-05 | 2020-12-04 | 安徽省中测电子科技有限公司 | Positive and negative pressure air sealing device |
| CN212182863U (en) * | 2020-05-21 | 2020-12-18 | 沈阳精锐科技有限公司 | High-safety electrical cabinet |
-
2021
- 2021-08-23 CN CN202110969413.0A patent/CN113675777B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464707A (en) * | 2016-06-02 | 2017-12-12 | 湖北网安科技有限公司 | A kind of protection blocking mechanism for high-voltage ring main unit |
| CN210110585U (en) * | 2019-06-28 | 2020-02-21 | 国网甘肃省电力公司白银供电公司 | Anti-misoperation device for earthing switch of ring main unit |
| CN210273124U (en) * | 2019-09-12 | 2020-04-07 | 沈阳精锐科技有限公司 | Interlocking device of high-voltage board |
| CN212182863U (en) * | 2020-05-21 | 2020-12-18 | 沈阳精锐科技有限公司 | High-safety electrical cabinet |
| CN111721387A (en) * | 2020-06-26 | 2020-09-29 | 徐俊俊 | Overweight detection warning mechanism for bridge safety |
| CN112033614A (en) * | 2020-08-05 | 2020-12-04 | 安徽省中测电子科技有限公司 | Positive and negative pressure air sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113675777A (en) | 2021-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113675777B (en) | Intelligent locking error-preventing device and error-preventing ring main unit | |
| CN115910645B (en) | Upper isolating lower circuit breaker switchgear with downward-pressing cabinet door interlocking mechanism | |
| CN114388281B (en) | Circuit breaker and grounding switch linkage mechanism for ring main unit | |
| CN215417982U (en) | Interlocking mechanism for circuit breaker operating mechanism, three-position switch and ring main unit | |
| CN109494112B (en) | Vacuum switch looped netowrk cabinet operating mechanism | |
| CN210325576U (en) | Grounding interlocking device | |
| CN219696377U (en) | External circuit breaker spring operating mechanism of motor | |
| CN217655787U (en) | Compact three-station isolation mechanism | |
| CN218769174U (en) | Upper isolation lower circuit breaker switch cabinet down-pressing type cabinet door interlocking mechanism | |
| CN219066660U (en) | Combined electric appliance operating mechanism | |
| CN220914099U (en) | Dual-motor control isolation operating mechanism | |
| CN217788225U (en) | Manual priority device of looped network inflating cabinet grounding operation shaft | |
| CN221379202U (en) | Interlocking mechanism of breaker and disconnecting switch | |
| CN223828359U (en) | Change-over switch energy storage operating mechanism | |
| CN118231198B (en) | Spring circuit breaker operating means | |
| CN216672253U (en) | Electrical safety switch cabinet | |
| CN222927965U (en) | Looped netowrk cabinet locking device | |
| CN221884945U (en) | Double-door interlocking mechanism of switch cabinet | |
| CN221529720U (en) | Operating handle with interlocking structure | |
| CN223378651U (en) | A ring main unit with a locking mechanism | |
| CN221805383U (en) | Manual isolation mechanism of environment-friendly cabinet | |
| CN214672457U (en) | Electric operating mechanism with locking device | |
| CN108155050B (en) | Operating shaft interlocking device for load switch | |
| CN215056234U (en) | Intelligent door lock for power distribution station room | |
| CN216435771U (en) | Four-axis interlocking operating mechanism for high-voltage switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |