CN113936952B - Miniature integrated vacuum circuit breaker breaking chamber - Google Patents
Miniature integrated vacuum circuit breaker breaking chamber Download PDFInfo
- Publication number
- CN113936952B CN113936952B CN202111210320.6A CN202111210320A CN113936952B CN 113936952 B CN113936952 B CN 113936952B CN 202111210320 A CN202111210320 A CN 202111210320A CN 113936952 B CN113936952 B CN 113936952B
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- Prior art keywords
- circuit breaker
- fixed
- plate
- sliding
- cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
-
- 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
- H01H9/02—Bases, casings, or covers
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Abstract
The invention relates to a novel miniaturized integrated vacuum circuit breaker breaking chamber, which comprises a shell, wherein three chambers are arranged in the shell, a bearing plate, two stabilizing pieces and a pressing plate for limiting the top end of the circuit breaker are movably arranged in the chambers.
Description
Technical Field
The invention relates to the technical field related to vacuum circuit breakers, in particular to a miniaturized integrated vacuum circuit breaker breaking chamber.
Background
The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no maintenance in arc extinguishing, and is more popular in power distribution networks. The vacuum circuit breaker is an indoor distribution device in a 3-10kV 50Hz three-phase alternating current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and substations, is particularly suitable for use places requiring oilless maintenance and frequent operation, and can be arranged in a centrally installed switchgear, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment.
In order to ensure that the vacuum circuit breaker is firmly connected with the insulating housing, so that the vacuum circuit breaker is normally used, the assembly process of the vacuum circuit breaker needs to be strictly controlled, and the assembly mode of the vacuum circuit breaker is usually assembled through a plurality of bolts at present, so that the operation is troublesome, and the required tools are more during the assembly, thereby bringing a plurality of inconveniences.
Disclosure of Invention
The invention aims to provide a miniaturized integrated vacuum circuit breaker breaking chamber, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the miniature integrated vacuum circuit breaker breaking chamber comprises a shell, wherein three chambers are arranged in the shell, and a bearing plate for bearing the circuit breaker, two stabilizing pieces for supporting the circuit breaker and a pressing plate for limiting the top end of the circuit breaker are movably arranged in the chambers;
the bearing plate is arranged in the cavity through two groups of elastic supporting mechanisms, two groups of elastic telescopic mechanisms which are respectively connected with the two stabilizing pieces are arranged on the inner wall of the cavity, the elastic telescopic mechanisms are connected with the bearing plate, and the elastic telescopic mechanisms are used for driving the two stabilizing pieces to do linear motion in the cavity so as to enable the two stabilizing pieces to limit the circuit breaker in the horizontal direction;
the bottom of the receiving plate is also provided with a locking mechanism, and the locking mechanism is used for locking the receiving plate after the two stabilizing pieces limit the circuit breaker so as to maintain the fixed state of the circuit breaker;
the pressing plate is movably arranged in the cavity through a thread conveying mechanism, and the thread conveying mechanism is used for driving the pressing plate to move up and down in the cavity, so that the pressing plate limits the circuit breaker in the vertical direction.
As a further scheme of the invention: the elastic supporting mechanism comprises a guide pipe vertically fixed on the bottom wall of the cavity, a telescopic rod slidingly arranged in the guide pipe and a first spring sleeved on the peripheries of the guide pipe and the telescopic rod;
one end of the telescopic rod, which is positioned outside the guide pipe, is fixed with the bottom of the bearing plate, one end of the first spring is connected with the bottom wall of the cavity, and the other end of the first spring is connected with the bottom of the bearing plate.
As still further aspects of the invention: the locking mechanism comprises a fixed pipe arranged below the bearing plate, a pressure spring arranged in the fixed pipe, a sliding rod sleeved with the fixed pipe in a sliding way, and a vertical plate vertically fixed on the bottom wall of the cavity;
the side part of the vertical plate is abutted with the sliding rod, a through hole for the sliding rod to penetrate is formed in the vertical plate, and the tail end of the pressure spring is connected with one end of the sliding rod, which is positioned in the fixing tube.
As still further aspects of the invention: the screw thread conveying mechanism comprises a screw rod rotatably mounted on the top wall of the cavity, a sliding plate arranged above the pressing plate through two elastic sheets, and a fixed cylinder mounted on the upper portion of the sliding plate and in threaded fit with the screw rod, wherein a knob for driving the screw rod to rotate is further mounted on the top of the shell.
As still further aspects of the invention: the elastic telescopic mechanism comprises a telescopic structure arranged on the inner wall of the chamber, a transmission structure for connecting the telescopic structure with the bearing plate, and an elastic component for connecting the telescopic structure with the stabilizing piece;
the telescopic structure comprises a frame body fixed on the inner wall of the cavity and a moving block arranged in the frame body in a sliding manner, and the stabilizing piece is movably arranged on the side part of the moving block through the elastic component.
As still further aspects of the invention: the transmission structure comprises a triangular block which is fixed above the bearing plate through a connecting column and is positioned on the side part of the frame body, and a protruding column which is fixed on the side part of the moving block and penetrates through the frame body, wherein a chute for the protruding column to move is further formed in the side part of the frame body, an inclined groove is formed in the triangular block, and the protruding column penetrates through the inclined groove and is in sliding fit with the triangular block.
As still further aspects of the invention: the movable block is provided with a deep groove on one side outside the frame body, the elastic component comprises a fixed shaft arranged in the deep groove, two sliding blocks symmetrically arranged on the fixed shaft in a sliding mode and two second springs sleeved on the fixed shaft, the two sliding blocks are connected with the stabilizing piece through a connecting rod respectively, and two ends of the connecting rod are hinged with the sliding blocks and the stabilizing piece respectively.
Compared with the prior art, the invention has the beneficial effects that: according to the embodiment of the invention, when the vacuum circuit breaker is used, the vacuum circuit breaker is placed on the upper part of the bearing plate and slightly pressed downwards, the bearing plate moves downwards, the elastic supporting mechanism triggers, meanwhile, the bearing plate drives the elastic telescopic mechanism to move, the elastic telescopic mechanism drives the stabilizing piece to linearly move towards the circuit breaker, the circuit breaker is fixed by limiting the elastic telescopic mechanism in the horizontal direction, and when the circuit breaker is limited, the bearing plate is triggered by the locking mechanism, so that the fixed state of the circuit breaker is maintained, then, the screw thread conveying mechanism moves, the pressing plate is driven to move downwards, the top end of the circuit breaker is limited, so that the circuit breaker is fixed in the vertical direction, and therefore, the convenience of the assembly operation of the vacuum circuit breaker is greatly improved through the mutual matching of the mechanisms and the components.
Drawings
Fig. 1 is a schematic view of a construction of an embodiment of a miniaturized integrated vacuum circuit breaker breaking chamber.
Fig. 2 is a schematic view of a miniaturized integrated vacuum circuit breaker breaking chamber at another angle to one embodiment.
Figure 3 is a front view of one embodiment of a miniaturized integrated vacuum circuit breaker breaking chamber.
Fig. 4 is an enlarged view of the structure at a in fig. 1.
Fig. 5 is a disassembled view of a screw conveyor in one embodiment of a miniaturized integrated vacuum interrupter chamber.
Fig. 6 is a schematic structural view of a locking mechanism in one embodiment of a miniaturized integrated vacuum circuit breaker breaking chamber.
Figure 7 is a semi-sectional view of a stationary tube in one embodiment of a miniaturized integrated vacuum interrupter chamber.
In the figure: 1-a housing; 2-a receiving plate; 3-stabilizing the firmware; 4-pressing the plate; 5-sliding plates; 6-shrapnel; 7-fixing the cylinder; 8-a screw rod; 9-a knob; 10-a first spring; 11-a telescopic rod; 12-a guide tube; 13-fixing the tube; 14-sliding bar; 15-a compression spring; 16-a frame; 17-a moving block; 18-projecting posts; 19-triangular blocks; 20-connecting columns; 21-a guide post; 22-a fixed shaft; 23-sliding blocks; 24-connecting rod; 25-risers; 26-chamber; 27-a second spring.
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. 1-7, a miniaturized integrated vacuum circuit breaker breaking chamber comprises a shell 1, wherein three chambers 26 are arranged in the shell 1, a bearing plate 2 for supporting the circuit breaker, two stabilizing pieces 3 for supporting the circuit breaker and a pressing plate 4 for limiting the top end of the circuit breaker are movably arranged in the chambers 26;
the bearing plate 2 is arranged in the cavity 26 through two groups of elastic supporting mechanisms, two groups of elastic telescopic mechanisms which are respectively connected with the two stabilizing pieces 3 are arranged on the inner wall of the cavity 26, the elastic telescopic mechanisms are connected with the bearing plate 2, and the elastic telescopic mechanisms are used for driving the two stabilizing pieces 3 to do linear motion in the cavity 26 so that the two stabilizing pieces 3 limit the circuit breaker in the horizontal direction;
the bottom of the receiving plate 2 is also provided with a locking mechanism, and the locking mechanism is used for locking the receiving plate 2 after the two stabilizing pieces 3 limit the circuit breaker so as to maintain the fixed state of the circuit breaker;
the pressing plate 4 is movably arranged in the cavity 26 through a screw thread conveying mechanism, and the screw thread conveying mechanism is used for driving the pressing plate 4 to move up and down in the cavity 26 so that the pressing plate 4 limits the circuit breaker in the vertical direction.
The above-described stabilizer 3 is provided in an arc shape.
In the embodiment of the invention, when the vacuum circuit breaker is used, the vacuum circuit breaker is placed on the upper part of the bearing plate 2 and slightly pressed downwards, the bearing plate 2 moves downwards, the elastic supporting mechanism is triggered, meanwhile, the bearing plate 2 drives the elastic telescopic mechanism to move, the elastic telescopic mechanism drives the stabilizing piece 3 to do linear motion towards the circuit breaker, limit the circuit breaker in the horizontal direction, fix the circuit breaker, and when the circuit breaker is limited, the locking mechanism is triggered, and the bearing plate 2 is locked, so that the fixed state of the circuit breaker is maintained;
then, the screw thread conveying mechanism moves to drive the pressing plate 4 to move downwards to limit the top end of the circuit breaker, so that the circuit breaker is fixed in the vertical direction;
in conclusion, through the mutual cooperation between each mechanism and the components, the convenience of the assembly operation of the vacuum circuit breaker is greatly improved, the volume is small, the production cost is reduced, the economic and environment-friendly effects are better, and the dynamic and thermal stability test effect is better.
As an embodiment of the present invention, the elastic supporting mechanism comprises a guide tube 12 vertically fixed on the bottom wall of the chamber 26, a telescopic rod 11 slidably arranged in the guide tube 12, and a first spring 10 sleeved on the outer circumferences of the guide tube 12 and the telescopic rod 11;
one end of the telescopic rod 11, which is positioned outside the guide pipe 12, is fixed with the bottom of the bearing plate 2, one end of the first spring 10 is connected with the bottom wall of the chamber 26, and the other end is connected with the bottom of the bearing plate 2.
In the embodiment of the invention, when the bearing plate 2 moves downwards, the telescopic rod 11 slides towards the guide pipe 12, the first spring 10 is compressed and stores a certain elastic potential energy, after the locking mechanism releases the locking of the bearing plate 2, the first spring 10 rebounds to enable the bearing plate 2 to return to the initial position, and meanwhile, the limit state of the circuit breaker by the stabilizing piece 3 is released;
in the process, the arrangement of the telescopic rod 11 and the guide tube 12 plays an effective role in protecting the first spring 10 and preventing the first spring from bending in the process of being compressed.
As an embodiment of the present invention, the locking mechanism comprises a fixed tube 13 installed below the receiving plate 2, a compression spring 15 arranged inside the fixed tube 13, a slide bar 14 slidably sleeved with the fixed tube 13, and a vertical plate 25 vertically fixed on the bottom wall of the chamber 26;
the side of the vertical plate 25 is abutted against the sliding rod 14, a through hole for the sliding rod 14 to penetrate is formed in the side of the vertical plate, and the tail end of the pressure spring 15 is connected with one end of the sliding rod 14 located inside the fixed pipe 13.
In order to reduce the friction between the slide bar 14 and the vertical plate 25, a rolling ball is disposed at one end of the slide bar 14 outside the fixed tube 13, and a through hole for the vertical plate 25 to pass through is formed in the receiving plate 2, and in actual assembly, the opening of the through hole does not interfere with the circuit breaker on the receiving plate 2.
In the embodiment of the invention, the first spring 10 is compressed in the process of moving down the receiving plate 2, when the slide bar 14 moves to a position corresponding to the through hole on the vertical plate 25, the compression spring 15 rebounds, then the slide bar 14 penetrates through the through hole, the receiving plate 2 is fixed, when the circuit breaker needs to be disassembled, the slide bar 14 is pressed into the fixed tube 13 until the slide bar 14 is separated from the through hole, the first spring 10 rebounds, the receiving plate 2 returns to the initial position, and the limit state of the circuit breaker by the stabilizing piece 3 is relieved.
As an embodiment of the present invention, the screw thread conveying mechanism comprises a screw rod 8 rotatably mounted on the top wall of the chamber 26, a sliding plate 5 arranged above the pressing plate 4 through two elastic sheets 6, and a fixed cylinder 7 mounted on the upper part of the sliding plate 5 and in threaded fit with the screw rod 8, and a knob 9 for driving the screw rod 8 to rotate is further mounted on the top of the housing 1.
Note that the spring plate 6 is a component with elasticity, and may be replaced by a spring or a torsion spring, which is not specifically limited in this application.
In the embodiment of the invention, the screw rod 8 is rotated through the knob 9, and the fixed cylinder 7 is in threaded fit with the screw rod 8, so that the pressing plate 4 and the sliding plate 5 move downwards, and the elastic sheet 6 deforms, thereby realizing the flexible limiting function of the circuit breaker in the vertical direction.
As an embodiment of the present invention, the elastic telescopic mechanism includes a telescopic structure mounted on the inner wall of the chamber 26, a transmission structure connecting the telescopic structure and the receiving plate 2, and an elastic component connecting the telescopic structure and the stabilizing member 3;
the telescopic structure comprises a frame body 16 fixed on the inner wall of the cavity 26 and a moving block 17 arranged in the frame body 16 in a sliding manner, and the stabilizing piece 3 is movably arranged on the side part of the moving block 17 through the elastic component;
the transmission structure comprises a triangular block 19 fixed above the bearing plate 2 and on the side of the frame 16 through a connecting column 20 and a protruding column 18 fixed on the side of the moving block 17 and penetrating the frame 16;
the side part of the frame 16 is also provided with a chute for the movement of the protruding column 18, the triangular block 19 is provided with an inclined slot, and the protruding column 18 penetrates through the inclined slot and is in sliding fit with the triangular block 19;
a deep groove is formed in one side of the moving block 17, which is positioned outside the frame 16, and the elastic component comprises a fixed shaft 22 arranged in the deep groove, two sliding blocks 23 symmetrically arranged on the fixed shaft 22 in a sliding manner, and two second springs 27 sleeved on the fixed shaft 22;
the two sliding blocks 23 are respectively connected with the stabilizing piece 3 through a connecting rod 24, and two ends of the connecting rod 24 are respectively hinged with the sliding blocks 23 and the stabilizing piece 3.
In order to ensure the stability of the movement of the stabilizing piece 3 after contacting with the circuit breaker, the moving block 17 is provided with a plurality of deep holes, and a guide post 21 with the tail end fixedly connected with the stabilizing piece 3 is arranged in the deep holes in a sliding way;
one end of the second spring 27 is connected to the slider 23, and the other end is connected to the inner wall of the deep groove.
In the embodiment of the invention, in the downward moving process of the receiving plate 2, the triangular block 19 is driven to move downward through the connecting column 20, the triangular block 19 is in sliding fit with the protruding column 18, so that the moving block 17 moves towards the outside of the frame 16, and after the stabilizing piece 3 contacts with the circuit breaker, the connecting rod 24 pushes the sliding block 23 to slide on the fixed shaft 22 and compress the second spring 27, so that the flexible limiting function of the circuit breaker in the horizontal direction is realized.
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 (5)
1. The miniature integrated vacuum circuit breaker breaking chamber comprises a shell (1), and is characterized in that three chambers (26) are arranged in the shell (1), and a bearing plate (2) for supporting the circuit breaker, two fixing pieces (3) for supporting the circuit breaker and a pressing plate (4) for limiting the top end of the circuit breaker are movably arranged in the chambers (26);
the bearing plate (2) is arranged in the cavity (26) through two groups of elastic supporting mechanisms, two groups of elastic telescopic mechanisms which are respectively connected with the two stabilizing pieces (3) are arranged on the inner wall of the cavity (26), the elastic telescopic mechanisms are connected with the bearing plate (2), and the elastic telescopic mechanisms are used for driving the two stabilizing pieces (3) to do linear motion in the cavity (26) so that the two stabilizing pieces (3) limit the circuit breaker in the horizontal direction;
the bottom of the bearing plate (2) is also provided with a locking mechanism, and the locking mechanism is used for locking the bearing plate (2) after the two stabilizing pieces (3) limit the circuit breaker so as to maintain the fixed state of the circuit breaker;
the pressing plate (4) is movably arranged in the cavity (26) through a screw thread conveying mechanism, and the screw thread conveying mechanism is used for driving the pressing plate (4) to move up and down in the cavity (26) so that the pressing plate (4) limits the circuit breaker in the vertical direction;
the elastic supporting mechanism comprises a guide pipe (12) vertically fixed on the bottom wall of the cavity (26), a telescopic rod (11) slidably arranged in the guide pipe (12) and a first spring (10) sleeved on the peripheries of the guide pipe (12) and the telescopic rod (11);
one end of the telescopic rod (11) positioned outside the guide pipe (12) is fixed with the bottom of the bearing plate (2), one end of the first spring (10) is connected with the bottom wall of the cavity (26), and the other end of the first spring is connected with the bottom of the bearing plate (2);
the locking mechanism comprises a fixed pipe (13) arranged below the bearing plate (2), a pressure spring (15) arranged inside the fixed pipe (13), a sliding rod (14) in sliding sleeve with the fixed pipe (13), and a vertical plate (25) vertically fixed on the bottom wall of the cavity (26);
the side part of the vertical plate (25) is abutted with the sliding rod (14), a through hole for the sliding rod (14) to penetrate is formed in the side part of the vertical plate, and the tail end of the pressure spring (15) is connected with one end of the sliding rod (14) positioned in the fixed pipe (13);
the screw thread conveying mechanism comprises a screw rod (8) rotatably mounted on the top wall of the cavity (26), a sliding plate (5) arranged above the pressing plate (4) through two elastic sheets (6), and a fixed cylinder (7) mounted on the upper portion of the sliding plate (5) and in threaded fit with the screw rod (8), wherein a knob (9) for driving the screw rod (8) to rotate is further mounted on the top of the shell (1).
2. A miniaturized integrated vacuum circuit breaker breaking chamber according to claim 1, characterized in that the elastic telescopic mechanism comprises a telescopic structure mounted on the inner wall of the chamber (26), a transmission structure connecting the telescopic structure with the receiving plate (2), and an elastic assembly connecting the telescopic structure with the stabilizing piece (3).
3. A miniaturized integrated vacuum circuit breaker breaking chamber according to claim 2, characterized in that the telescopic structure comprises a frame (16) fixed on the inner wall of the chamber (26), a moving block (17) slidingly arranged in the frame (16), the steady piece (3) being movably arranged on the side of the moving block (17) by means of the elastic assembly.
4. A miniaturized integrated vacuum circuit breaker breaking chamber according to claim 3, characterized in that the transmission structure comprises a triangular block (19) fixed above the receiving plate (2) and on the side of the frame (16) by means of a connecting column (20) and a protruding column (18) fixed on the side of the moving block (17) and penetrating the frame (16);
the side part of the frame body (16) is also provided with a chute for the protruding column (18) to move, the triangular block (19) is provided with an inclined groove, and the protruding column (18) penetrates through the inclined groove and is in sliding fit with the triangular block (19).
5. A miniaturized integrated vacuum circuit breaker breaking chamber according to claim 4, characterized in that said moving block (17) is provided with a deep groove on the side outside said frame (16), said elastic assembly comprising a fixed shaft (22) mounted in said deep groove, two sliding blocks (23) symmetrically sliding on said fixed shaft (22) and two second springs (27) sheathed on said fixed shaft (22);
the two sliding blocks (23) are respectively connected with the stabilizing piece (3) through a connecting rod (24), and two ends of the connecting rod (24) are respectively hinged with the sliding blocks (23) and the stabilizing piece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111210320.6A CN113936952B (en) | 2021-10-18 | 2021-10-18 | Miniature integrated vacuum circuit breaker breaking chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111210320.6A CN113936952B (en) | 2021-10-18 | 2021-10-18 | Miniature integrated vacuum circuit breaker breaking chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113936952A CN113936952A (en) | 2022-01-14 |
| CN113936952B true CN113936952B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111210320.6A Active CN113936952B (en) | 2021-10-18 | 2021-10-18 | Miniature integrated vacuum circuit breaker breaking chamber |
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| CN (1) | CN113936952B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101640712B1 (en) * | 2015-04-20 | 2016-07-19 | 엘에스산전 주식회사 | Vaccum circuit braker |
| CN107946145A (en) * | 2017-12-24 | 2018-04-20 | 浙江柳晶整流器有限公司 | A kind of embedded low-voltage circuit breaker being easily installed |
| CN209209472U (en) * | 2018-11-30 | 2019-08-06 | 北京第零农业科技有限公司 | Agricultural product transport device |
| CN210378879U (en) * | 2019-10-29 | 2020-04-21 | 广鸿电气有限公司 | Vacuum circuit breaker |
| CN112242268A (en) * | 2019-07-16 | 2021-01-19 | 徐州以勒电器科技有限公司 | Novel vacuum circuit breaker |
| CN113270798A (en) * | 2021-07-21 | 2021-08-17 | 江苏永达电力金具有限公司 | Adjustable low-voltage switchgear |
| CN214068630U (en) * | 2021-01-22 | 2021-08-27 | 武汉隆致电气有限公司 | Vacuum circuit breaker convenient to install and reliable in tripping |
-
2021
- 2021-10-18 CN CN202111210320.6A patent/CN113936952B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101640712B1 (en) * | 2015-04-20 | 2016-07-19 | 엘에스산전 주식회사 | Vaccum circuit braker |
| CN107946145A (en) * | 2017-12-24 | 2018-04-20 | 浙江柳晶整流器有限公司 | A kind of embedded low-voltage circuit breaker being easily installed |
| CN209209472U (en) * | 2018-11-30 | 2019-08-06 | 北京第零农业科技有限公司 | Agricultural product transport device |
| CN112242268A (en) * | 2019-07-16 | 2021-01-19 | 徐州以勒电器科技有限公司 | Novel vacuum circuit breaker |
| CN210378879U (en) * | 2019-10-29 | 2020-04-21 | 广鸿电气有限公司 | Vacuum circuit breaker |
| CN214068630U (en) * | 2021-01-22 | 2021-08-27 | 武汉隆致电气有限公司 | Vacuum circuit breaker convenient to install and reliable in tripping |
| CN113270798A (en) * | 2021-07-21 | 2021-08-17 | 江苏永达电力金具有限公司 | Adjustable low-voltage switchgear |
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| CN113936952A (en) | 2022-01-14 |
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