CN114242536B - Low-frequency circuit breaker transmission mechanism - Google Patents
Low-frequency circuit breaker transmission mechanism Download PDFInfo
- Publication number
- CN114242536B CN114242536B CN202210032444.8A CN202210032444A CN114242536B CN 114242536 B CN114242536 B CN 114242536B CN 202210032444 A CN202210032444 A CN 202210032444A CN 114242536 B CN114242536 B CN 114242536B
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- connecting rod
- fixing plate
- guide groove
- hinged
- circuit breaker
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Abstract
The invention provides a low-frequency circuit breaker transmission mechanism, which belongs to the technical field of circuit breakers and comprises a low-frequency circuit breaker shell and an insulating rod, wherein a first fixing plate and a second fixing plate are arranged on the low-frequency circuit breaker shell, horizontal guide grooves are formed in the first fixing plate and the second fixing plate, vertical guide grooves are formed in the second fixing plate, and one end of each vertical guide groove is communicated with one end of each horizontal guide groove; the two ends of the insulating rod are respectively hinged with a first connecting rod and a third connecting rod, one end of the first connecting rod is provided with a first pin shaft, the first pin shaft is positioned in a horizontal guide groove on the first fixed plate, and the first connecting rod is connected with a first movable contact through a contact connecting piece; one end of the connecting rod III is provided with a pin shaft II, the pin shaft II is positioned in a horizontal guide groove or a vertical guide groove on the fixed plate II, and the connecting rod III is connected with a movable contact II through a contact connecting piece II. The invention has the beneficial effects that the two pairs of contacts in the low-frequency circuit breaker can move one pair first and one pair moves later, so that the arc extinguishing time is effectively shortened, and the long arcing can not be broken after the long arcing time is avoided.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a low-frequency circuit breaker transmission mechanism.
Background
Two pairs of contacts are generally provided in a low frequency circuit breaker, and an operating state of the low frequency circuit breaker is changed by opening and contacting between the two pairs of contacts. When the contact is opened or closed, the opening distance formed by the corresponding movable contact and static contact after the movable contact and static contact are separated from contact is changed from small to large, but when the opening distance is not large, an arc extinguishing condition cannot be formed, and only when the opening distance reaches a certain optimal value and is matched with the zero crossing moment of current in an alternating current arc, the arc can be extinguished. However, because the matching between the zero crossing moment of the current of the alternating current arc and the current is quite complex, when the opening distance between the movable contact and the static contact reaches the optimal state on the machine (the arc extinguishing air current is strongest at the moment), the instantaneous value of the current does not need to be exactly zero crossing, so that in order to extinguish the arc, the arc in the alternating current arc needs to be burned for a period of time again, the next zero crossing moment of the arc is waited, the whole arc extinguishing time becomes long, and the travel of the arc extinguishing chamber in the whole low-frequency circuit breaker is increased.
Disclosure of Invention
The invention solves the problem of providing a transmission mechanism which can enable two pairs of contacts in a low-frequency circuit breaker to move asynchronously and reduce arc extinguishing time.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the low-frequency circuit breaker transmission mechanism comprises a low-frequency circuit breaker shell and an insulating rod, wherein a first fixing plate and a second fixing plate are arranged on the low-frequency circuit breaker shell, horizontal guide grooves are formed in the first fixing plate and the second fixing plate, and the length direction of each horizontal guide groove is parallel to the direction of a connecting line between the first fixing plate and the second fixing plate; the second fixing plate is also provided with a vertical guide groove, and one end of the vertical guide groove is communicated with one end, far away from the first fixing plate, of the horizontal guide groove of the second fixing plate; one end of the insulating rod is connected with an outer connecting rod, and the length direction of the insulating rod is parallel to the length direction of the horizontal guide groove; one end of the insulating rod, which is connected with the outer connecting rod, is hinged with a first connecting rod, one end of the first connecting rod, which is far away from the insulating rod, is provided with a first pin roll, and the first pin roll is positioned in a horizontal guide groove on the first fixed plate and can be in sliding connection with the horizontal guide groove on the first fixed plate; the first connecting rod is also hinged with a first contact connecting piece, and the first contact connecting piece is provided with a first movable contact; one end, far away from the outer connecting rod, of the insulating rod is hinged with a connecting rod III, one end, far away from the insulating rod, of the connecting rod III is provided with a pin shaft II, and the pin shaft II is positioned in a horizontal guide groove or a vertical guide groove on the fixing plate II and can be in sliding connection with the horizontal guide groove and the vertical guide groove on the fixing plate II; and the third connecting rod is also hinged with a second contact connecting piece, and the second contact connecting piece is provided with a second movable contact. When the two pairs of contacts in the low-frequency circuit breaker are opened and closed, the two movable contacts can be asynchronous through the mechanism, so that the two pairs of contacts are different in state, namely, one pair of contacts moves first and the other pair of contacts moves later, the arc extinguishing time of an arc extinguishing chamber in the whole low-frequency circuit breaker is shortened, and the problem that long arcing cannot be opened after the arcing time is overlong is avoided.
Further, the first fixed plate is provided with a vertical guide groove, and the end part of the vertical guide groove on the first fixed plate is communicated with one end, far away from the second fixed plate, of the horizontal guide groove on the first fixed plate, so that the first movable contact can not move horizontally when the second movable contact moves horizontally, and the stroke of the first movable contact is effectively shortened.
Further, the first contact connecting piece comprises a second connecting rod and a first connecting block, one end of the second connecting rod is hinged to the first connecting block, the other end of the second connecting rod is hinged to the first connecting rod, and the first movable contact is arranged on the first connecting block, so that the first movable contact can stably and horizontally move along with the first connecting rod.
Further, the second connecting rod is hinged with the first connecting rod through a first pin shaft, and the second connecting rod and the first connecting rod are respectively positioned on two sides of the first fixing plate, so that the second connecting rod can move according to a specified action under the limitation of a horizontal guide groove and a vertical guide groove on the first fixing plate.
Further, the second contact connecting piece comprises a connecting rod IV and a connecting block II, one end of the connecting rod IV is hinged to the connecting block II, the other end of the connecting rod IV is hinged to the connecting rod III, and the second movable contact is arranged on the connecting block II, so that the second movable contact can not move horizontally and greatly when the connecting rod III rotates.
Further, the connecting rod IV is hinged with the connecting rod III through the pin shaft II, and the connecting rod III and the connecting rod IV are respectively positioned on two sides of the fixing plate II, so that the connecting rod IV can move according to the specified action under the limitation of the horizontal guide groove and the vertical guide groove on the fixing plate II.
Further, two horizontal guide grooves and two vertical guide grooves are symmetrically arranged on the first fixing plate and the second fixing plate along the horizontal center line; the upper side and the lower side of the first fixing plate are respectively provided with an insulating rod, each insulating rod is hinged with a first connecting rod and a third connecting rod, each first connecting rod is hinged with a second connecting rod, the second connecting rods are hinged with the first connecting block, and pin shafts on the second connecting rods are respectively connected with corresponding horizontal guide grooves or vertical guide grooves on the first fixing plate in a sliding manner; and each connecting rod III is hinged with a connecting rod IV, each connecting rod IV is hinged with a connecting block II, and a pin shaft II on each connecting rod IV is respectively in sliding connection with a corresponding horizontal guide groove or vertical guide groove on the fixing plate II. Thus, as two sets of mechanisms are used for simultaneously operating the two contact connecting pieces, the corresponding movable contact can be ensured to stably move.
Further, a fixed clamping plate is connected between the two insulating rods, and the two insulating rods can be ensured to synchronously and stably move through the fixed clamping plate.
Further, each insulating rod is connected with an outer connecting rod, one ends, far away from the insulating rods, of the two outer connecting rods are connected with a joint together, and therefore when the low-frequency circuit breaker is operated manually, the joint can be operated directly through the insulating pull rod, and overall safety is improved.
From the above technical scheme, the invention has the following advantages: according to the invention, through the structures of the connecting rod, the horizontal guide groove, the vertical guide groove and the like, one pair of contacts in two pairs of contacts of an arc extinguish chamber in the low-frequency circuit breaker firstly move to break short-circuit current, and the other pair of contacts later move to break short-circuit current; therefore, the arc extinguishing time in the arc extinguishing chamber is effectively shortened, the problem that the long arcing in the arc extinguishing chamber cannot be broken after the arcing time is overlong is effectively avoided, and the stroke of the contacts in the arc extinguishing chamber is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a side view of an embodiment of the present invention (the low frequency circuit breaker housing is not shown).
Fig. 2 is a cross-sectional view at A-A in fig. 1.
In the figure: 1. connecting blocks II, 2, connecting rods IV, 3, fixing clamping plates, 4, connecting rods III, 5, fixing plates II, 6, insulating rods, 7, connecting blocks I, 8, connecting rods II, 9, connecting rods I, 10, pin shafts I, 11, outer connecting rods, 12, joints, 13, vertical guide grooves, 14, fixing plates I, 15, horizontal guide grooves, 16 and pin shafts II.
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.
As shown in fig. 1 and 2, the present invention provides a low-frequency circuit breaker transmission mechanism, which includes a low-frequency circuit breaker housing, a first fixing plate 14 and a second fixing plate 5 are installed on the low-frequency circuit breaker housing, horizontal guide grooves 15 are disposed on the first fixing plate 14 and the second fixing plate 5, and the length direction of the horizontal guide grooves 15 is parallel to the direction of a connecting line between the first fixing plate 14 and the second fixing plate 5; in addition, the second fixing plate 5 is further provided with a vertical guide groove 13, one end of the vertical guide groove 13 is communicated with one end, far away from the first fixing plate 14, of the horizontal guide groove 15 of the second fixing plate 5, so that an L-shaped guide groove is formed, and a rounded corner transition is preferably adopted between the horizontal guide groove 15 and the vertical guide groove 13.
In addition, the invention also comprises an outer connecting rod 11, one end of the outer connecting rod 11 is connected with a joint 12, the other end of the outer connecting rod 11 is connected with an insulating rod 6, and the length direction of the insulating rod 6 is parallel to the length direction of the horizontal guide groove 15. One end of the insulating rod 6 connected with the outer connecting rod 11 is also hinged with a first connecting rod 9, one end of the first connecting rod 9 far away from the insulating rod 6 is provided with a first pin shaft 10, and the first pin shaft 10 is positioned in a horizontal guide groove 15 on the first fixing plate 14 and is in sliding connection with the horizontal guide groove 15; the first connecting rod 9 is also hinged with a first contact connecting piece, and the first contact connecting piece is provided with a first movable contact. Specifically, the first contact connector comprises a second connecting rod 8 and a first connecting block 7, wherein the first movable contact is installed on the first connecting block 7, one end of the second connecting rod 8 is hinged to the first connecting block 7, the other end of the second connecting rod 8 is hinged to a first connecting rod 9, the second connecting rod 8 is preferably hinged to the first connecting rod 9 through a first pin shaft 10, and the second connecting rod 8 and the first connecting rod 9 are located on two sides of the first fixing plate 14 respectively. In addition, as a further preferred mode, a vertical guide groove 13 is also arranged on the first fixed plate 14, and the end part of the vertical guide groove 13 on the first fixed plate 14 is communicated with one end, far away from the second fixed plate 5, of the horizontal guide groove 15 on the first fixed plate 14, so that an L-shaped guide groove is formed, and when the second pin 16 is positioned at the joint of the horizontal guide groove 15 and the vertical guide groove 13 on the second fixed plate 5, the first pin 10 is positioned at the joint of the horizontal guide groove 15 and the vertical guide groove 13 on the first fixed plate 14; in addition, a rounded transition is preferably employed between the horizontal guide slot 15 and the vertical guide slot 13 to facilitate movement of the pin 10 between the corresponding horizontal guide slot 15 and vertical guide slot 13.
The end, far away from the outer connecting rod 11, of the insulating rod 6 is further hinged with a connecting rod III 4, the end, far away from the insulating rod 6, of the connecting rod III 4 is provided with a pin II 16, the pin II 16 is positioned in a horizontal guide groove 15 or a vertical guide groove 13 on the fixing plate II 5 and can be in sliding connection with the horizontal guide groove 15 and the vertical guide groove 13, and when the pin I10 is positioned in the horizontal guide groove 15 on the fixing plate I14 and is close to one end of the fixing plate II 5, the pin II 16 is positioned in the vertical guide groove 13 of the fixing plate II 5 and is far away from one end of the corresponding horizontal guide groove 15; and a contact connecting piece II is hinged on the connecting rod III 4, and a movable contact II is also arranged on the contact connecting piece II. Specifically, the second contact connecting piece comprises a connecting rod four 2 and a connecting block two 1, wherein the second movable contact is arranged on the connecting block two 1, one end of the connecting rod four 2 is hinged with the connecting block two 1, the other end of the connecting rod four 2 is hinged with a connecting rod three 4, the connecting rod four 2 is preferably hinged with the connecting rod three 4 through a pin shaft two 16, and at the moment, the connecting rod three 4 and the connecting rod four 2 are respectively positioned on two sides of the fixing plate two 5.
In addition, in order to ensure that the first connecting block 7 and the second connecting block stably move, two horizontal guide grooves 15 and two vertical guide grooves 13 are symmetrically arranged on the first fixing plate 14 and the second fixing plate 5 along the horizontal center line; two outer connecting rods 11 are symmetrically arranged on the joint 12 along the horizontal center line, each outer connecting rod 11 is connected with one insulating rod 6, and a fixed clamping plate 3 is further connected between the two insulating rods 6, so that the two insulating rods 6 can synchronously move; each insulating rod 6 is hinged with a first connecting rod 9 and a third connecting rod 4, each first connecting rod 9 is hinged with a second connecting rod 8, each second connecting rod 8 is hinged with a first connecting block 7, and a first pin shaft 10 on each second connecting rod 8 is respectively connected with a corresponding horizontal guide groove 15 or vertical guide groove 13 on a first fixed plate 14 in a sliding manner; and each connecting rod III 4 is hinged with a connecting rod IV 2, the two connecting rods IV 2 are hinged with the connecting block II 1, and the pin shafts II 16 on the two connecting rods IV 2 are respectively in sliding connection with the corresponding horizontal guide grooves 15 or vertical guide grooves 13 on the fixing plate II 5.
After the invention is applied to the low-frequency circuit breaker, when two pairs of contacts on the low-frequency circuit breaker are in a closed state, a pin II 16 on a connecting rod III 4 is positioned in a vertical guide groove 13 on a fixed plate II 5, and a pin I10 on a connecting rod I9 is positioned in a horizontal guide groove 15 on a fixed plate I14; when two pairs of contacts on the low-frequency circuit breaker need to be disconnected, only the connector 12 is pulled horizontally by an insulating pull rod outside the low-frequency circuit breaker manually, so that the connector 12 applies horizontal pulling force to the outer connecting rod 11 and drives the outer connecting rod 11 and the insulating rod 6 to move horizontally, and the front and back disconnection of the two pairs of contacts can be realized. Specifically, in the early moving process of the outer connecting rod 11, under the limitation of the horizontal guide groove 15 on the first fixed plate 14, one end of the insulating rod 6 hinged with the first connecting rod 9 drives the first connecting rod 9 to move horizontally along the horizontal guide groove 15 on the first fixed plate 14, and the first connecting rod 9 drives the second connecting rod 8 hinged with the first connecting rod 9 to move horizontally, so that the first connecting rod 7 hinged with the second connecting rod 8 and the movable contact connected with the first connecting rod 7 move linearly, and the first separation of the corresponding contacts is realized; meanwhile, one end of the insulating rod 6 hinged with the connecting rod three 4 can drive the connecting rod three 4 to move, but because one end of the connecting rod three 4 far away from the insulating rod 6 is positioned in the vertical guide groove 13 on the fixed plate two 5, the connecting rod three 4 can only rotate and cannot horizontally move greatly, so that the connecting rod four 2 hinged on the connecting rod three 4 can only rotate and cannot horizontally move greatly, the movable contact connected with the connecting block two 1 and the connecting block two 1 hinged on the connecting rod four 2 cannot be driven to linearly move, the contact corresponding to the connecting block two 1 cannot be separated at the moment, and when one end of the connecting rod three 4 hinged with the connecting rod four 2 moves to the junction of the horizontal guide groove 15 and the vertical guide groove 13 on the fixed plate two 5, at the moment, when the insulating rod 6 continuously horizontally moves, the connecting rod three 4 starts to horizontally move along the horizontal guide groove 15 on the fixed plate two 5, so that the connecting rod four 2 hinged on the connecting rod three 4 is driven to horizontally move along the same direction, and the movable contact connected with the connecting block two 1 on the connecting rod four 2 is driven to linearly move, and the corresponding contact is separated.
In addition, in the implementation process, the lengths of the horizontal guide groove 15 and the vertical guide groove 13 on the first fixing plate 14 and the second fixing plate 5 and the length of the insulating rod 6 can be flexibly adjusted so as to change the motion states and the motion relation of the first connecting rod 9, the second connecting rod 8, the third connecting rod 4 and the fourth connecting rod 2, and further change the separation interval time between the two pairs of contacts, so that the circuit breaker is suitable for the breaking requirements of different circuit breakers.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The low-frequency circuit breaker transmission mechanism is characterized by comprising a low-frequency circuit breaker shell and an insulating rod (6), wherein a first fixing plate (14) and a second fixing plate (5) are arranged on the low-frequency circuit breaker shell, horizontal guide grooves (15) are formed in the first fixing plate (14) and the second fixing plate (5), and the length direction of the horizontal guide grooves (15) is parallel to the connecting line direction between the first fixing plate (14) and the second fixing plate (5); the second fixing plate (5) is also provided with a vertical guide groove (13), and one end of the vertical guide groove (13) is communicated with one end, far away from the first fixing plate (14), of the horizontal guide groove (15) of the second fixing plate (5); one end of the insulating rod (6) is connected with an outer connecting rod (11), and the length direction of the insulating rod (6) is parallel to the length direction of the horizontal guide groove (15); one end, connected with the outer connecting rod (11), of the insulating rod (6) is hinged with a first connecting rod (9), one end, far away from the insulating rod (6), of the first connecting rod (9) is provided with a first pin shaft (10), and the first pin shaft (10) is positioned in a horizontal guide groove (15) on the first fixed plate (14) and can be in sliding connection with the horizontal guide groove (15) on the first fixed plate (14); a contact connecting piece I is hinged to the connecting rod I (9), and a movable contact I is arranged on the contact connecting piece I; one end, far away from the outer connecting rod (11), of the insulating rod (6) is hinged with a connecting rod III (4), one end, far away from the insulating rod (6), of the connecting rod III (4) is provided with a pin roll II (16), and the pin roll II (16) is positioned in a horizontal guide groove (15) or a vertical guide groove (13) on the fixing plate II (5) and can be in sliding connection with the horizontal guide groove (15) and the vertical guide groove (13) on the fixing plate II (5); and the third connecting rod (4) is also hinged with a second contact connecting piece, and the second contact connecting piece is provided with a second movable contact.
2. The transmission mechanism of the low-frequency circuit breaker according to claim 1, wherein the first fixing plate (14) is provided with a vertical guide groove (13), and the end part of the vertical guide groove (13) on the first fixing plate (14) is communicated with one end, far away from the second fixing plate (5), of the horizontal guide groove (15) on the first fixing plate (14).
3. The transmission mechanism of a low frequency circuit breaker according to claim 1 or 2, wherein the first contact connector comprises a second connecting rod (8) and a first connecting block (7), one end of the second connecting rod (8) is hinged with the first connecting block (7), the other end of the second connecting rod (8) is hinged with the first connecting rod (9), and the first movable contact is mounted on the first connecting block (7).
4. A transmission mechanism for a low frequency circuit breaker according to claim 3, wherein the second connecting rod (8) is hinged to the first connecting rod (9) through a first pin (10), and the second connecting rod (8) and the first connecting rod (9) are respectively located at two sides of the first fixing plate (14).
5. A transmission mechanism for a low frequency circuit breaker according to claim 3 wherein the second contact connector comprises a fourth connecting rod (2) and a second connecting block (1), one end of the fourth connecting rod (2) is hinged to the second connecting block (1), the other end of the fourth connecting rod (2) is hinged to the third connecting rod (4), and the second movable contact is mounted on the second connecting block (1).
6. The low-frequency breaker transmission mechanism according to claim 5, wherein the fourth connecting rod (2) is hinged to the third connecting rod (4) through a second pin shaft (16), and the third connecting rod (4) and the fourth connecting rod (2) are respectively located on two sides of the second fixing plate (5).
7. The transmission mechanism of the low-frequency circuit breaker according to claim 5, wherein the first fixing plate (14) and the second fixing plate (5) are symmetrically provided with two horizontal guide grooves (15) and two vertical guide grooves (13) along a horizontal central line; an insulating rod (6) is respectively arranged on the upper side and the lower side of the first fixing plate (14), a first connecting rod (9) and a third connecting rod (4) are hinged on each insulating rod (6), a second connecting rod (8) is hinged on each first connecting rod (9), the second connecting rods (8) are hinged with the first connecting block (7), and a first pin shaft (10) on the second connecting rods (8) is respectively connected with a corresponding horizontal guide groove (15) or vertical guide groove (13) on the first fixing plate (14) in a sliding mode; and each connecting rod III (4) is hinged with a connecting rod IV (2), the two connecting rods IV (2) are hinged with the connecting block II (1), and the pin shafts II (16) on the two connecting rods IV (2) are respectively in sliding connection with the corresponding horizontal guide grooves (15) or vertical guide grooves (13) on the fixing plate II (5).
8. The transmission mechanism of the low-frequency circuit breaker according to claim 7, characterized in that a fixed clamping plate (3) is connected between the two insulating rods (6).
9. The transmission mechanism of the low-frequency circuit breaker according to claim 8, wherein each insulating rod (6) is connected with an outer connecting rod (11), and one end, far away from the insulating rod (6), of each outer connecting rod (11) is commonly connected with a joint (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210032444.8A CN114242536B (en) | 2022-01-12 | 2022-01-12 | Low-frequency circuit breaker transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210032444.8A CN114242536B (en) | 2022-01-12 | 2022-01-12 | Low-frequency circuit breaker transmission mechanism |
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| Publication Number | Publication Date |
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| CN114242536A CN114242536A (en) | 2022-03-25 |
| CN114242536B true CN114242536B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210032444.8A Active CN114242536B (en) | 2022-01-12 | 2022-01-12 | Low-frequency circuit breaker transmission mechanism |
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| CN213845139U (en) * | 2020-10-21 | 2021-07-30 | 平高集团有限公司 | Double-acting arc extinguish chamber of circuit breaker and circuit breaker using arc extinguish chamber |
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| CN101290847A (en) * | 2007-04-17 | 2008-10-22 | 阿雷瓦T&D股份公司 | Circuit breaker with rupture chamber having double movement and inverted structure |
| CN101770894A (en) * | 2008-12-31 | 2010-07-07 | Ls产电株式会社 | High voltage gas circuit breaker |
| KR20100079930A (en) * | 2008-12-31 | 2010-07-08 | 엘에스산전 주식회사 | High voltage gas circuit breaker |
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| CN213845139U (en) * | 2020-10-21 | 2021-07-30 | 平高集团有限公司 | Double-acting arc extinguish chamber of circuit breaker and circuit breaker using arc extinguish chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114242536A (en) | 2022-03-25 |
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