CN113257591B - Permanent magnet circuit breaker hand separating mechanism and ring main unit comprising same - Google Patents
Permanent magnet circuit breaker hand separating mechanism and ring main unit comprising same Download PDFInfo
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- CN113257591B CN113257591B CN202110362317.XA CN202110362317A CN113257591B CN 113257591 B CN113257591 B CN 113257591B CN 202110362317 A CN202110362317 A CN 202110362317A CN 113257591 B CN113257591 B CN 113257591B
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- main shaft
- circuit breaker
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- closing
- isolation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/04—Levers
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- 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
- H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a permanent magnet circuit breaker manual opening mechanism which comprises a frame, an operation main shaft, a main shaft limiting plate, an opening limiting adjusting screw and a closing limiting adjusting screw, wherein the operation main shaft is arranged on the frame in a rotating mode, the main shaft limiting plate is fixedly arranged on the operation main shaft, and the frame is provided with the opening limiting adjusting screw and the closing limiting adjusting screw which are matched with the main shaft limiting plate to block the operation main shaft to continuously rotate after the operation main shaft rotates to an opening position and a closing position respectively. A ring main unit comprises a permanent magnet circuit breaker manual separation mechanism. The invention has the beneficial effects that: and an opening limit adjusting screw and a closing limit adjusting screw are arranged at the opening and closing positions, and are matched with a main shaft limit plate in the quick opening and closing process of the circuit breaker, so that the overshooting of a mechanism and an interlocking piece is avoided, and the damage to the mechanism and the interlocking is caused.
Description
Technical Field
The invention relates to the field of power transmission and transformation, in particular to a permanent magnet circuit breaker manual separation mechanism and a ring main unit comprising the same.
Background
In an electric power transmission and transformation system, a ring main unit is very important electric equipment, and once a fault occurs, the equipment is damaged if the fault occurs, and the fault of the electric power system is caused if the fault occurs. The 10kV medium-voltage circuit breaker is well accepted by the majority of users due to excellent arc extinguishing performance and breaking capacity, and the product is suitable for the requirements of medium-voltage network nodes and user terminals and the use requirements of secondary substations on compact switch cabinets.
The traditional circuit breaker adopts a spring operating mechanism to perform opening and closing, the spring operating mechanism is complex in structure, large in impact force, high in component strength requirement and high in part machining precision requirement.
Compared with the traditional circuit breaker, the permanent magnet circuit breaker adopts a brand-new working principle and structure, does not need a mechanical tripping and locking device, has simple structure, few fault sources, long service life, convenient installation and stable performance, and is more and more applied to the power grid.
The permanent magnet circuit breaker for the ring main unit generally adopts a direct-acting permanent magnet mechanism, a moving iron core of the mechanism is connected with a vacuum arc extinguish chamber through an insulating pull rod, and the switching-on and switching-off function of the circuit breaker is realized through a mechanism coil. The permanent magnet operating mechanism is integrally installed in the stainless steel gas box as a part of the vacuum circuit breaker. In the actual operation of a power grid, emergency manual opening is sometimes needed, and under the condition that no external power supply exists, a mechanism coil cannot open a circuit breaker.
The traditional permanent magnet circuit breaker manual separation mechanism has the following defects:
1. the permanent magnet circuit breaker manual opening mechanism operation main shaft can rotate in two directions, and because the permanent magnet circuit breaker does not support manual closing operation, the reverse rotation to opening can cause the gap of a vacuum contact to be reduced and even closed to cause insulation breakdown, and the arc striking can be caused to generate an arc (arcing) fault in serious cases;
2. the permanent magnet circuit breaker hand opening and closing mechanism is not provided with a limiting device at the opening and closing position, so that the mechanism and the interlocking piece are easily overshot in the quick opening and closing process of the circuit breaker, and the mechanism and the interlocking are damaged;
3. the interlocking piece between the manual opening mechanism and the isolation mechanism of the permanent magnet circuit breaker is overlarge in mass, the circuit breaker is required to drive the interlocking piece, the inertia is large in the process of quickly opening and closing the mechanism, the action load of the circuit breaker is increased, and the opening and closing performance, the interlocking and the service life of the circuit breaker are possibly influenced;
4. the permanent magnet circuit breaker manual mechanism auxiliary switch is unreasonable in selection design, the mechanism auxiliary switch structure vacancy activity is large, exceeding/quitting of a stroke is easy, and the contact of an auxiliary switch contact is not in place, so that circuit breaker position signal acquisition errors are caused.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a permanent magnet circuit breaker manual separation mechanism and a ring main unit comprising the same, so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the utility model provides a permanent magnetism breaker hand separating mechanism, includes frame, operation main shaft, main shaft limiting plate, spacing adjusting screw of separating brake and the spacing adjusting screw of combined floodgate, and the operation main shaft sets up on the frame with the pivoted form, and the main shaft limiting plate is fixed to be set up on the operation main shaft, is equipped with on the frame to rotate respectively to separating brake position and combined floodgate position after the operation main shaft blocks with the cooperation main shaft limiting plate that the operation main shaft continues to carry out pivoted spacing adjusting screw of separating brake and the spacing adjusting screw of combined floodgate.
The invention has the beneficial effects that: the switching-on and switching-off positions are provided with a switching-off limit adjusting screw and a switching-on limit adjusting screw, and the main shaft limit plate is matched to avoid overshooting of the mechanism and the interlocking piece to cause damage to the mechanism and the interlocking piece in the rapid switching-on and switching-off processes of the circuit breaker.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, one end of the operation main shaft is movably matched, and the other end of the operation main shaft is provided with a main shaft one-way operation rod.
Adopt above-mentioned further beneficial effect to do: through increasing the one-way action bars of main shaft, when making manual operation permanent magnetism circuit breaker hand separating mechanism, the operation main shaft can only unidirectional rotation, can only rotate towards the separating brake direction promptly, has avoided because of the maloperation, and manual messenger permanent magnetism circuit breaker combined floodgate (permanent magnetism circuit breaker does not support manual combined floodgate) causes power failure.
Furthermore, one end of the operation main shaft, which is provided with a main shaft one-way operation rod, is provided with a brake opening and closing indication board; an isolation interlocking component which moves up and down to block or allow the operation of an isolation switch operating shaft from the outside is arranged below the opening and closing indication board; after the main shaft is operated to rotate to the switching-on position, the isolation interlocking assembly is blocked to move upwards through the switching-on and switching-off indicating plate.
Further, a guide structure is arranged between the isolation interlocking component and the frame along the up-down moving direction of the isolation interlocking component.
Furthermore, the isolation interlocking assembly comprises an isolation interlocking plate, an interlocking driving rod and an interlocking plate, a guide structure is arranged between the isolation interlocking plate and the frame along the vertical direction, the interlocking plate is connected with the lower end of the isolation interlocking plate, and the interlocking driving rod is arranged on the isolation interlocking plate.
The beneficial effects of adopting the three steps are as follows: the interlocking can be designed to adopt a relatively independent and mutually interlocked structural mode, the isolation interlocking component can not move along with the operation main shaft, the impact damage to the circuit breaker, the mechanism and the interlocking body caused by overlarge inertia in the quick switching-on and switching-off process of the mechanism due to overlarge mass of the interlocking piece between the permanent magnet circuit breaker hand switching-off mechanism and the isolation mechanism is avoided, and the switching-on and switching-off performance and the mechanical life of the circuit breaker are ensured.
Further, still include isolation interlock position switch, isolation interlock position switch sets up on the frame, and isolation interlock subassembly is in order to trigger isolation interlock position switch in the lower row and relieve circuit breaker combined floodgate shutting.
Adopt above-mentioned further beneficial effect to do: the signal that the isolation interlocking plate reciprocated can be accurate the collection, realize the mechanical and electrical integration formula interlocking of circuit breaker and isolation (load) switch, provide the basis for follow-up divide-shut brake.
The frame is provided with a first position switch interlock, a second position switch interlock and a switching-on and switching-off position switch, wherein the switching-on and switching-off position switch and the second position switch interlock are arranged on the frame, the first position switch interlock is arranged on the operation main shaft, and the first position switch interlock is in sliding fit with the second position switch interlock; the main shaft is operated to rotate to the opening position to drive the first position switch interlock to move in the second position switch interlock so as to trigger the contact action of the opening and closing position switch.
Adopt above-mentioned further beneficial effect to do: by adopting the position switch interlocking mode, when the operation main shaft rotates at a position in a larger range, the opening and closing position signals can be still accurately collected, and the reliability is improved.
Further, an isolation interlocking component which can block or allow the operation of the isolation switch operation shaft from the outside through moving up and down is fixed below the main shaft one-way operation rod of the operation main shaft.
Adopt above-mentioned further beneficial effect to do: the isolation interlocking component is linked with the operation main shaft, and the operation main shaft drives the isolation interlocking component to vertically move in the vertical direction when rotating so as to block or allow the outside to operate the operation shaft of the isolation switch.
The switching-on and switching-off switch is arranged on the frame, one end of the main shaft connecting lever is connected with one end of the operation main shaft, which is in movable fit, and the other end of the main shaft connecting lever is connected with the switching-on and switching-off switch through a connecting rod.
Adopt above-mentioned further beneficial effect to do: the operating main shaft is additionally provided with a main shaft crank arm which is connected with the switching-on and switching-off change-over switch through a connecting rod, and the operating main shaft drives the change-over switch to act through the connecting rod in the switching-on and switching-off process, so that the stability is good.
A ring main unit comprises a permanent magnet circuit breaker hand-separating mechanism.
Furthermore, the ring main unit further comprises a cabinet body, an air box positioned in the cabinet body, a permanent magnet circuit breaker positioned in the air box and matched with the operation main shaft, and an isolation mechanism positioned below the manual separation mechanism of the permanent magnet circuit breaker.
Adopt above-mentioned further beneficial effect to do: the hand-separating mechanism of the permanent magnet circuit breaker has simple and reliable structure. The mechanical and electrical integrated interlocking of the circuit breaker and the isolating (load) switch is realized; the operation main shaft is operated in a one-way mode, the opening and closing positions of the permanent magnet circuit breaker are limited, and the circuit breaker, the mechanism and the interlocking are prevented from being damaged due to misoperation.
Drawings
Fig. 1 is a switching-off state diagram of a manual switching-off mechanism of a permanent magnet circuit breaker according to a first aspect of the present invention;
fig. 2 is a closing state diagram of the permanent magnet circuit breaker manual opening mechanism according to the first embodiment of the present invention;
fig. 3 is a rear view of a hand-separating mechanism of a first permanent magnet circuit breaker according to the present invention;
fig. 4 is a structural diagram of the ring main unit according to the present invention;
fig. 5 is a first opening state diagram of the second permanent magnet circuit breaker hand opening mechanism of the invention;
fig. 6 is a second opening state diagram of the second permanent magnet circuit breaker hand opening mechanism of the invention;
fig. 7 is a structural diagram of a second hand-separating mechanism of the permanent magnet circuit breaker according to the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a frame, 2, an operation spindle, 210, a movable fit, 220, a spindle one-way operating rod, 230, an opening and closing indication board, 3, a spindle limiting board, 4, an opening limit adjusting screw, 5, a closing limit adjusting screw, 6, an isolation switch operating shaft, 7, an isolation interlocking assembly, 710, an isolation interlocking board, 720, an interlocking driving lever, 730, an interlocking board, 8, a guide structure, 9, an isolation interlocking position switch, 10, a first position switch interlocking, 11, a second position switch interlocking, 12, an opening and closing position switch, 13, an air box, 14, an isolation mechanism, 15, a cabinet body, 16, a spindle crank arm, 17, an opening and closing change-over switch.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 to 3, 5, 6, and 7, a manual opening mechanism of a permanent magnet circuit breaker includes a frame 1, an operation spindle 2, a spindle limiting plate 3, an opening limiting adjusting screw 4, and a closing limiting adjusting screw 5, where the operation spindle 2 is rotatably disposed on the frame 1, the spindle limiting plate 3 is fixedly disposed on the operation spindle 2, a connection manner between the spindle limiting plate 3 and the operation spindle 2 may be welding, the frame 1 is provided with the opening limiting adjusting screw 4 that is configured to cooperate with the spindle limiting plate 3 to block the operation spindle 2 from continuously rotating after the operation spindle 2 rotates to an opening position, the frame 1 is provided with the closing limiting adjusting screw 5 that is configured to cooperate with the spindle limiting plate 3 to block the operation spindle 2 from continuously rotating after the operation spindle 2 rotates to a closing position, and the closing limiting adjusting screw 5 is located on the left side of the operation spindle 2 according to the viewing angles shown in fig. 1 and 2, and the opening limiting adjusting screw 4 is located above the operation spindle 2.
Example 2
As shown in fig. 1 to fig. 3, this embodiment is a further improvement on embodiment 1, and specifically includes the following steps:
the operating spindle 2 has a movable fit 210 at one end and a spindle one-way operating lever 220 at the other end.
Example 3
As shown in fig. 1 to fig. 3, this embodiment is a further improvement on embodiment 2, and specifically includes the following steps:
an opening and closing indication plate 230 is arranged at one end, provided with a main shaft one-way operating rod 220, of the operating main shaft 2, and when the operating main shaft 2 rotates to an opening and closing position and an opening position respectively, the opening and closing indication plate 230 indicates that the circuit breaker is in the opening and closing position respectively;
an isolation interlocking component 7 which moves up and down to block or allow the external operation on the isolation switch operation shaft 6 is arranged below the opening and closing indication board 230, and in the embodiment, when the isolation interlocking component 7 moves downwards, the external operation on the isolation switch operation shaft 6 is blocked, and when the isolation interlocking component 7 moves upwards, the external operation on the isolation switch operation shaft 6 is allowed; after the operation main shaft 2 rotates to the switching-on position, the isolation interlocking component 7 is blocked to move upwards through the switching-on and switching-off indicating plate 230.
Example 4
As shown in fig. 1 to fig. 3, this embodiment is a further improvement on embodiment 3, and specifically includes the following steps:
a guide structure 8 is arranged between the isolation interlocking component 7 and the frame 1 along the up-down moving direction of the isolation interlocking component 7.
Example 5
As shown in fig. 1 to fig. 3, this embodiment is a further improvement on embodiment 4, and specifically includes the following steps:
Example 6
As shown in fig. 1 to fig. 3, this embodiment is a further improvement on embodiment 5, and specifically includes the following steps:
the permanent magnet circuit breaker manual opening mechanism further comprises an isolation interlocking position switch 9, the isolation interlocking position switch 9 is arranged on the frame 1, the isolation interlocking plate 710 is in descending to trigger the isolation interlocking position switch 9 to release closing locking of the circuit breaker, and the isolation interlocking position switch 9 can be a roller type microswitch.
Example 7
As shown in fig. 1 to fig. 3, the present embodiment is a further improvement on embodiment 6, and specifically includes the following steps:
the permanent magnet circuit breaker manual opening mechanism further comprises a first position switch interlocking 10, a second position switch interlocking 11 and a switching-off and switching-on position switch 12, the switching-off and switching-on position switch 12 and the second position switch interlocking 11 are arranged on the frame 1, the first position switch interlocking 10 is arranged on the operation main shaft 2, and the first position switch interlocking 10 is in sliding fit with the second position switch interlocking 11 210; when the operation main shaft 2 rotates to the opening position, the first position switch interlocking lock 10 is driven to move in the second position switch interlocking lock 11 to trigger the contact action of the opening and closing position switch 12.
Example 8
As shown in fig. 5, 6 and 7, the present embodiment is a further improvement on embodiment 2, and specifically includes the following steps:
the lower part of the main shaft one-way operation lever 220 of the operation main shaft 2 is fixed with an isolation interlocking assembly 7 which blocks or allows the operation of the isolation switch operation shaft 6 from the outside by moving up and down.
The permanent magnet circuit breaker manual opening mechanism further comprises a main shaft connecting lever 16 and a switching-closing transfer switch 17, the switching-closing transfer switch 17 is arranged on the frame 1, one end of the main shaft connecting lever 16 is connected with one end, with a movable fit 210, of the operation main shaft 2, the other end of the main shaft connecting lever 16 is connected with the switching-closing transfer switch 17 through a connecting rod, and after the operation main shaft 2 rotates, the switching-closing transfer switch 17 is triggered to act through the main shaft connecting lever 16 and the connecting rod.
Example 9
As shown in fig. 1 to 6, in this embodiment, a further improvement is made on the basis of any one of embodiments 1 to 8, specifically as follows: a ring main unit comprises a permanent magnet circuit breaker hand-separating mechanism.
In addition, the ring main unit further comprises a cabinet body 15, an air box 13 located in the cabinet body 15, a permanent magnet circuit breaker located in the air box 13 and matched with the movable fit 210 in the operation main shaft 2, and an isolation mechanism 14 located below the manual separation mechanism of the permanent magnet circuit breaker.
The closing operation is that after the isolation mechanism 14 is closed and the operating handle is pulled out, the isolation interlocking component 7 moves downwards and triggers the isolation interlocking position switch 9 to release closing locking of the circuit breaker, and a closing button is pressed to electrically close the permanent magnet circuit breaker;
during electric switching on, the permanent magnet circuit breaker in the air tank 13 drives the operation main shaft 2 outside the air tank 13 to rotate clockwise through the movable fit 210, the operation main shaft 2 drives the first position switch interlock 10 to move towards the right in the second position switch interlock 11, the contact of the switching-on/off position switch 12 is driven to act, and the mechanism collects a switching-on signal.
Meanwhile, when the operation main shaft 2 rotates until the main shaft limiting plate 3 contacts the closing limiting adjusting screw 5, the closing limiting adjusting screw 5 prevents the operation main shaft 2 from continuing rotating, the opening and closing indicating plate 230 indicates that the circuit breaker is in the closing position, the isolation interlocking component 7 cannot be lifted upwards, the isolation interlocking component 7 blocks the isolation switch operation shaft 6, and the purpose that the isolation switch cannot be opened under load is achieved;
opening operation: after the circuit breaker is switched on, the circuit breaker can be switched off manually in an emergency, the one-way operating rod 220 of the operating main shaft rotates anticlockwise (the operating main shaft 2 cannot rotate in the clockwise operation), and when the operating force is larger than the self-closing force of the permanent magnet circuit breaker, the permanent magnet circuit breaker is switched off;
during the separating brake, operation main shaft 2 drives first position switch interlocking 10 and moves to the left in second position switch interlocking 11, drives the action of divide-shut brake position switch 12 contact, and the mechanism gathers the separating brake signal, and operation main shaft 2 rotates simultaneously and when main shaft limiting plate 3 contacted separating brake limit adjusting screw 4, and separating brake limit adjusting screw 4 prevents operation main shaft 2 to continue to rotate, and the sign 230 instruction circuit breaker is in the separating brake position, and isolation interlocking subassembly 7 can upwards mention this moment, and isolator operating axis 6 can operate.
In the switching-on and switching-off process, the isolation interlocking component 7 does not move along with the operation main shaft 2, but adopts a relatively independent and interlocking structure mode, the isolation interlocking component 7 can be manually lifted only after the breaker is switched off, and the isolation interlocking position switch 9 locks the breaker to be switched on after the isolation interlocking component 7 is lifted.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (4)
1. A ring main unit, comprising: the manual separation mechanism of the permanent magnet circuit breaker, a cabinet body (15), an air box (13) positioned in the cabinet body (15), the permanent magnet circuit breaker which is positioned in the air box (13) and matched with the operation main shaft (2), and an isolation mechanism (14) positioned below the manual separation mechanism of the permanent magnet circuit breaker;
the permanent magnet circuit breaker manual opening mechanism comprises a frame (1), an operation main shaft (2), a main shaft limiting plate (3), an opening limiting adjusting screw (4) and a closing limiting adjusting screw (5), wherein the operation main shaft (2) is arranged on the frame (1) in a rotating mode, the main shaft limiting plate (3) is fixedly arranged on the operation main shaft (2), and the frame (1) is provided with the opening limiting adjusting screw (4) and the closing limiting adjusting screw (5) which are respectively rotated to an opening position and a closing position by the operation main shaft (2) and then are matched with the main shaft limiting plate (3) to block the operation main shaft (2) to continuously rotate;
one end of the operation main shaft (2) is provided with a movable fit (210), and the other end is provided with a main shaft one-way operation rod (220);
one end of the operation main shaft (2) provided with a main shaft unidirectional operation rod (220) is provided with a brake opening and closing indication board (230); an isolation interlocking component (7) which moves up and down to block or allow an external isolation switch operating shaft (6) to operate is arranged below the opening and closing indication board (230); and after the operation main shaft (2) rotates to a switching-on position, the isolation interlocking component (7) is blocked to move upwards through a switching-on and switching-off indicating plate (230).
2. Ring main unit according to claim 1, characterized in that a guiding structure (8) is arranged between said isolating and interlocking assembly (7) and said frame (1) along the up and down movement direction thereof.
3. The ring main unit as claimed in claim 1, further comprising an isolation interlock position switch (9), wherein the isolation interlock position switch (9) is disposed on the frame (1), and the isolation interlock component (7) is configured to trigger the isolation interlock position switch (9) to release a circuit breaker closing lock in a downward direction.
4. The ring main unit as claimed in claim 3, further comprising a first position switch interlock (10), a second position switch interlock (11) and a switch-off and switch-on position switch (12), wherein the switch-off and switch-on position switch (12) and the second position switch interlock (11) are both disposed on the frame (1), the first position switch interlock (10) is disposed on the operation main shaft (2), and the first position switch interlock (10) is slidably fitted (210) with the second position switch interlock (11); and the operation main shaft (2) drives the first position switch interlocking lock (10) to move in the second position switch interlocking lock (11) in the process of rotating to the opening position so as to trigger the contact action of the opening and closing position switch (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110362317.XA CN113257591B (en) | 2021-04-02 | 2021-04-02 | Permanent magnet circuit breaker hand separating mechanism and ring main unit comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110362317.XA CN113257591B (en) | 2021-04-02 | 2021-04-02 | Permanent magnet circuit breaker hand separating mechanism and ring main unit comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113257591A CN113257591A (en) | 2021-08-13 |
| CN113257591B true CN113257591B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110362317.XA Active CN113257591B (en) | 2021-04-02 | 2021-04-02 | Permanent magnet circuit breaker hand separating mechanism and ring main unit comprising same |
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| CN (1) | CN113257591B (en) |
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| JPH09290377A (en) * | 1996-03-01 | 1997-11-11 | Ryobi Ltd | Switch mechanism for power tool |
| JP2002112416A (en) * | 2001-08-22 | 2002-04-12 | Mitsubishi Electric Corp | Cubicle |
| CN101345169A (en) * | 2008-08-14 | 2009-01-14 | 无锡创明传动工程有限公司 | Switch-on locking and tripping device of permanent magnet breaker |
| CN103578817A (en) * | 2012-08-03 | 2014-02-12 | 广东米勒电气有限公司 | Interlocking device for disconnector and circuit breaker |
| CN209029317U (en) * | 2018-09-28 | 2019-06-25 | 中国电力科学研究院有限公司 | The interlocking mechanism of on-pole switch main fracture locking auxiliary fracture |
| CN209328819U (en) * | 2019-01-10 | 2019-08-30 | 河南华盛隆源电气有限公司 | A kind of permanent-magnet breaker |
| CN209626086U (en) * | 2019-05-18 | 2019-11-12 | 珠海思玛特电气有限公司 | 12KV atmospheric pressure sealed permanent-magnet breaker on/off operation mechanism |
| CN214542016U (en) * | 2021-04-02 | 2021-10-29 | 霍立克电气有限公司 | Permanent magnet circuit breaker hand separating mechanism |
-
2021
- 2021-04-02 CN CN202110362317.XA patent/CN113257591B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09290377A (en) * | 1996-03-01 | 1997-11-11 | Ryobi Ltd | Switch mechanism for power tool |
| JP2002112416A (en) * | 2001-08-22 | 2002-04-12 | Mitsubishi Electric Corp | Cubicle |
| CN101345169A (en) * | 2008-08-14 | 2009-01-14 | 无锡创明传动工程有限公司 | Switch-on locking and tripping device of permanent magnet breaker |
| CN103578817A (en) * | 2012-08-03 | 2014-02-12 | 广东米勒电气有限公司 | Interlocking device for disconnector and circuit breaker |
| CN209029317U (en) * | 2018-09-28 | 2019-06-25 | 中国电力科学研究院有限公司 | The interlocking mechanism of on-pole switch main fracture locking auxiliary fracture |
| CN209328819U (en) * | 2019-01-10 | 2019-08-30 | 河南华盛隆源电气有限公司 | A kind of permanent-magnet breaker |
| CN209626086U (en) * | 2019-05-18 | 2019-11-12 | 珠海思玛特电气有限公司 | 12KV atmospheric pressure sealed permanent-magnet breaker on/off operation mechanism |
| CN214542016U (en) * | 2021-04-02 | 2021-10-29 | 霍立克电气有限公司 | Permanent magnet circuit breaker hand separating mechanism |
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Denomination of invention: A permanent magnet circuit breaker manual opening mechanism and a ring network cabinet containing it Effective date of registration: 20230920 Granted publication date: 20230314 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: HOLIC ELECTRICAL TECHNOLOGY CO.,LTD. Registration number: Y2023980057571 |