CN110137045B - Spring operating mechanism and circuit breaker using same - Google Patents
Spring operating mechanism and circuit breaker using same Download PDFInfo
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- CN110137045B CN110137045B CN201910341071.0A CN201910341071A CN110137045B CN 110137045 B CN110137045 B CN 110137045B CN 201910341071 A CN201910341071 A CN 201910341071A CN 110137045 B CN110137045 B CN 110137045B
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- latch
- electromagnet
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- 238000009434 installation Methods 0.000 abstract description 25
- 230000000903 blocking effect Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Patch Boards (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a spring operating mechanism and a circuit breaker using the same, wherein the spring operating mechanism comprises a rack, a pawl and a latch shaft arranged on the rack, the rack is also provided with a main electromagnet and an auxiliary electromagnet which work independently, the latch shaft is provided with a main latch which is in abutting fit with a ram of the main electromagnet and is driven by the main electromagnet to drive the latch shaft to rotate, and an auxiliary latch which is in abutting fit with a ram of the auxiliary electromagnet and is driven by the auxiliary electromagnet to drive the latch shaft to rotate, the main latch is provided with a stopping position matched with the pawl stopping position and a yielding position yielding the pawl, the auxiliary latch drives the main latch to move through the latch shaft to enable the main latch to be in the yielding position, and the main latch and the auxiliary latch are axially arranged along the latch shaft at intervals, so that the problem of large installation space of components such as a latch of the spring operating mechanism in the prior art is solved.
Description
Technical Field
The invention relates to a spring operating mechanism and a circuit breaker using the same.
Background
The opening tripping system is a key system in a spring operating mechanism of the circuit breaker, and is to reliably ensure that the circuit breaker realizes opening and avoid the opening rejection phenomenon caused by the fault of the tripping system, and the electromagnet is a power source for the action of the opening tripping system. The electromagnet of the current circuit breaker spring operating mechanism controls the latch through a latch assembly, the latch assembly comprises a latch, the latch is rotatably assembled on the rack, one end of the latch is in transmission fit with the latch in a stop fit mode, and the latch keeps the spring in an energy storage state by limiting the action of the latch. The conventional two electromagnets are respectively a main electromagnet and an auxiliary electromagnet, the two electromagnets are arranged in series, after a coil of the main electromagnet is burnt out, the auxiliary electromagnet can drive the latch through pushing a striker of the main electromagnet, however, when the striker of the main electromagnet is blocked, the latch assembly cannot act.
The application publication number is CN109166741A, and the application publication number is 2019.01.08, the Chinese invention patent application discloses a circuit breaker, a spring operating mechanism and a latch assembly thereof, the spring operating mechanism comprises a base and a latch which is rotatably assembled on the base, the latch is provided with a stopping position for stopping a latch and an abdicating position for abdicating the latch on a controlled reciprocating swinging stroke, the base is provided with at least two electromagnets which are arranged in parallel and can independently drive the latch to abdicating position from the stopping position, the latch and the electromagnets are in abutting fit with a striker of the electromagnets through a striker on the latch, the two electromagnets of the spring operating mechanism are mutually independent and can realize independent driving of the latch, but the striker on the latch needs a larger space in the swinging process, so that the spring operating mechanism has the problem of large installation space of components such as the latch and the like.
Disclosure of Invention
The invention aims to provide a spring operating mechanism, which aims to solve the problem that the installation space of components such as a latch and the like of the spring operating mechanism in the prior art is large; it is also an object of the present invention to provide a circuit breaker that solves the above mentioned problems.
The spring operating mechanism adopts the following technical scheme:
the spring operating mechanism comprises a rack, a pawl and a latch shaft arranged on the rack, wherein a main electromagnet and an auxiliary electromagnet which work independently are further arranged on the rack, a main latch which is in abutting fit with a striker of the main electromagnet and is driven by the main electromagnet to drive the latch shaft to rotate and an auxiliary latch which is in abutting fit with a striker of the auxiliary electromagnet and is driven by the auxiliary electromagnet to drive the latch shaft to rotate are arranged on the latch shaft, the main latch is provided with a stopping position which is in abutting fit with the pawl and a yielding position which yields the pawl, the auxiliary latch drives the main latch to move through the latch shaft to enable the main latch to be in the yielding position, and the main latch and the auxiliary latch are axially arranged along the latch shaft at intervals.
The beneficial effects of the invention are: the main electromagnet and the auxiliary electromagnet can independently drive the latch shaft, so that the main latch is changed from a blocking position to an opening position. The main lock bolt and the auxiliary lock bolt are arranged along the axial direction of the lock bolt shaft at intervals, so that the occupied space of the main lock bolt and the auxiliary lock bolt is only two spaces at intervals of the axial direction of the lock bolt shaft, other components can be installed in the space between the main lock bolt and the auxiliary lock bolt, the installation space required by the main lock bolt and the auxiliary lock bolt is smaller than the installation space of a striker fixed on the lock bolt in the prior art, the installation space of components such as the lock bolt is reduced, and the problem of large installation space of components such as the lock bolt of a spring operating mechanism in the prior art is solved.
In order to facilitate the fixed installation of the main electromagnet and the auxiliary electromagnet on the rack, the main electromagnet and the auxiliary electromagnet are arranged along the axial direction of the latch shaft, and the main latch and the auxiliary latch are arranged in parallel with the pushing surfaces which are matched with the corresponding collision rods in a propping manner, so that the fixed installation of the main electromagnet and the auxiliary electromagnet can be completed at the same side of the rack, and the installation and the fixation are convenient.
Considering that the use of the main lock bolt is more, in order to ensure the stability of the main lock bolt, in the scheme, two bolt shaft through holes which are in rotating fit with the bolt shaft are arranged on the rack along the axial direction of the bolt shaft at intervals, the main lock bolt is arranged on the part of the bolt shaft between the two bolt shaft through holes, the auxiliary lock bolt is arranged on the part of the bolt shaft on one side, which is deviated from the other bolt shaft through hole, of one bolt shaft through hole, and therefore the main lock bolt is positioned between the two bolt shaft through holes, and the stability of the main lock bolt can be well ensured through the hole walls of the two bolt shaft through holes.
In order to simplify the structure of the frame, the spring operating mechanism in the scheme also comprises an electromagnet mounting seat for fixing the main electromagnet and the auxiliary electromagnet, and the main electromagnet and the auxiliary electromagnet are fixed on the frame through the electromagnet mounting seat; the two electromagnets can be fixed on the electromagnet mounting seat firstly, and then the electromagnet mounting seat is fixed on the rack, so that the fixed installation of the two electromagnets on the rack is completed, the mounting seats for installing the main electromagnet and the auxiliary electromagnet on the rack are avoided, and the structure of the rack is simplified.
The technical scheme adopted by the invention is as follows:
the circuit breaker comprises a circuit breaker body and a spring operating mechanism, wherein the spring operating mechanism comprises a rack, a pawl and a latch shaft arranged on the rack, the rack is also provided with a main electromagnet and an auxiliary electromagnet which work independently, the latch shaft is provided with a main latch which is in abutting fit with a striker of the main electromagnet and drives the latch shaft to rotate by the driving of the main electromagnet and an auxiliary latch which is in abutting fit with a striker of the auxiliary electromagnet and drives the latch shaft to rotate by the driving of the auxiliary electromagnet, the main latch is provided with a stopping position which is in stopping fit with the pawl and a yielding position which yields the pawl, the auxiliary latch drives the main latch to move through the latch shaft to enable the main latch to be in the yielding position, and the main latch and the auxiliary latch are arranged at intervals along the axial direction of the latch shaft.
The invention has the beneficial effects that: the main electromagnet and the auxiliary electromagnet can independently drive the latch shaft, so that the main latch is changed from a blocking position to an opening position. The main lock bolt and the auxiliary lock bolt are arranged along the axial direction of the lock bolt shaft at intervals, so that the occupied space of the main lock bolt and the auxiliary lock bolt is only two spaces of the lock bolt shaft at intervals, other components can be installed in the space between the main lock bolt and the auxiliary lock bolt, the installation space required by the main lock bolt and the auxiliary lock bolt is smaller than the installation space of a striker fixed on the lock bolt in the prior art, the installation space of components such as the lock bolt is reduced, and the problem of large installation space of components such as the lock bolt of a spring operating mechanism in the prior art is solved.
In order to facilitate the fixed installation of the main electromagnet and the auxiliary electromagnet on the rack, the main electromagnet and the auxiliary electromagnet are arranged along the axial direction of the latch shaft, and the main latch and the auxiliary latch are arranged in parallel with the pushing surfaces which are matched with the corresponding collision rods in a propping manner, so that the fixed installation of the main electromagnet and the auxiliary electromagnet can be completed at the same side of the rack, and the installation and the fixation are convenient.
In consideration of more use of the main lock latch, in order to ensure the stability of the main lock latch, two latch shaft through holes which are in rotating fit with the latch shaft are arranged on the frame at intervals along the axial direction of the latch shaft, the main lock latch is arranged on the portion, between the two latch shaft through holes, of the latch shaft, the auxiliary lock latch is arranged on the portion, on one side, opposite to the other latch shaft through hole, of the latch shaft through hole, and therefore the main lock latch is arranged between the two latch shaft through holes, and the stability of the main lock latch can be well ensured through the hole wall of the two latch shaft through holes.
In order to simplify the structure of the frame, the spring operating mechanism in the scheme also comprises an electromagnet mounting seat for fixing the main electromagnet and the auxiliary electromagnet, and the main electromagnet and the auxiliary electromagnet are fixed on the frame through the electromagnet mounting seat; the two electromagnets can be fixed on the electromagnet mounting seat firstly, and then the electromagnet mounting seat is fixed on the rack, so that the fixed installation of the two electromagnets on the rack is completed, the mounting seats for installing the main electromagnet and the auxiliary electromagnet on the rack are avoided, and the structure of the rack is simplified.
Drawings
FIG. 1 is a front view of the spring actuator structure of the present invention;
FIG. 2 is a left side view of the spring actuator construction of the present invention;
FIG. 3 is a schematic view of the arrangement of two electromagnets and latch shaft of FIG. 1;
FIG. 4 is a schematic diagram of two electromagnets in FIG. 1;
fig. 5 is a bottom view of fig. 4.
In the figure: 1-a main electromagnet; 2-auxiliary electromagnet; 3-an electromagnet mounting base; 4-auxiliary collision bar; 5-a main ram; 6-latch door shaft; 7-a primary latch; 8-secondary latch; 9-pushing the surface; 10-a frame; 11-a connecting plate; 12-a return spring; 13-catch.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In a specific embodiment of the spring operating mechanism of the present invention, the spring operating mechanism in this embodiment is used for opening operation, as shown in fig. 1 to fig. 3, the spring operating mechanism includes a frame 10 and a latch shaft 6 disposed on the frame 10, the frame 10 is further provided with a main electromagnet 1 and a sub-electromagnet 2, and the main electromagnet 1 and the sub-electromagnet 2 are connected in parallel, so that the two electromagnets can work independently. The latch shaft 6 is provided with a main latch 7 and a secondary latch 8 which drive the latch shaft 6 to rotate, wherein the main latch 7 is driven by the main electromagnet 1, and the secondary latch 8 is driven by the secondary electromagnet 2. The main electromagnet 1 and the auxiliary electromagnet 2 are respectively provided with a main striker 5 and an auxiliary striker 4 which are respectively matched with the main latch 7 and the auxiliary latch 8 in an abutting mode. As shown in fig. 2, the main latch 7 has a stop position for stop-engaging with the catch 13, the main latch 7 also has an open position for releasing the catch 13, and the secondary latch 8 drives the main latch 7 through the latch shaft 6 to change the main latch from the stop position to the open position.
When the main electromagnet 1 and the auxiliary electromagnet 2 of the spring operating mechanism can work normally, the main electromagnet 1 and the auxiliary electromagnet 2 drive the latch shaft 6 to rotate together, so that the main latch 7 is changed from a blocking position to an open position; when the auxiliary electromagnet 2 is in failure, the main plunger latch 7 is impacted by the main striking rod 5 of the main electromagnet 1, so that the main plunger latch 7 is changed from a blocking position to a releasing position; when the main electromagnet 1 is in failure, the auxiliary plunger 4 of the auxiliary electromagnet 2 impacts the auxiliary latch 8, so that the auxiliary latch 8 is driven to drive the latch shaft 6 to rotate, the latch shaft 6 drives the main latch 7 to act, and the main latch 7 is changed from the blocking position to the releasing position. The main latch 7 in the open position releases the blocking of the latch 13, and then the latch 13 is released, so that the brake opening of the spring operating mechanism is completed.
In this embodiment, the primary latch 7 and the secondary latch 8 are arranged at an interval in the axial direction of the latch shaft 6, so that the primary latch 7 and the secondary latch 8 occupy only two spaces in the axial interval of the latch shaft 6, and the space between the primary latch 7 and the secondary latch 8 can be provided with other parts, and the installation space required for the primary latch 7 and the secondary latch 8 is smaller than that of the striker fixed to the latches in the prior art.
In order to facilitate the fixed installation of the main electromagnet 1 and the auxiliary electromagnet 2 on the frame 10, the main electromagnet 1 and the auxiliary electromagnet 2 are also arranged along the axial direction of the latch shaft 6, and the pushing surfaces 9 which are matched with the corresponding impact bars in an abutting mode are arranged on the main latch and the auxiliary latch in parallel. As shown in fig. 2, in order to return the primary latch 7 in the escape position, a return spring 12 is connected to the primary latch 7 in this embodiment. After the spring operating mechanism finishes the opening operation, the main electromagnet 1 and the auxiliary electromagnet 2 lose power, and the main lock bolt 7 is reset under the action of the reset spring 12.
As shown in fig. 4 and 5, the primary electromagnet 1 and the secondary electromagnet 2 in this embodiment are fixed to the same electromagnet mounting base 3, and the frame 10 has a connecting plate 11 fixedly connected to the electromagnet mounting base 3. When the two electromagnets are fixedly installed, the two electromagnets can be fixed on the electromagnet installation seat 3 firstly, and then the electromagnet installation seat 3 is fixed on the rack 10, so that the fixed installation of the two electromagnets on the rack 10 is completed, the installation seats for respectively installing the main electromagnet 1 and the auxiliary electromagnet 2 on the rack 10 are avoided, and the structure of the rack 10 is simplified.
Considering that the primary latch 7 needs to be in abutting engagement with the catch 13, the frame 10 of the present embodiment is provided with two latch shaft through holes rotatably engaged with the latch shafts 6 at intervals along the axial direction of the latch shafts 6, wherein the primary latch 7 is provided on the portion of the latch shafts 6 located between the two latch shaft through holes, and the secondary latch 8 is provided on the portion of the latch shafts 6 on the side of one of the latch shaft through holes facing away from the other latch shaft through hole. In this way, the main bolt 7 is located between the two bolt shaft through holes, and the stability of the main bolt 7 can be well ensured through the hole walls of the two bolt shaft through holes.
In other embodiments, the spring operating mechanism can be used for closing operation; the main electromagnet and the auxiliary electromagnet can be arranged along the axial direction of the latch shaft and are distributed on two sides of the latch shaft, namely the pushing surfaces of the two pawls form a certain included angle; the primary latch and the secondary latch may each be disposed on the latch shaft portion between the two latch shaft through holes; the main electromagnet and the auxiliary electromagnet can be respectively fixed on the frame through an electromagnet mounting seat or a connecting plate.
In a specific embodiment of the circuit breaker of the present invention, the circuit breaker includes a circuit breaker body and a spring operating mechanism, and the spring operating mechanism in this embodiment has the same structure as the spring operating mechanism described in the specific embodiment of the spring operating mechanism, and is not described again.
Claims (8)
1. The spring operating mechanism comprises a rack, a pawl and a latch shaft arranged on the rack, and is characterized in that a main electromagnet and an auxiliary electromagnet which work independently are further arranged on the rack, a main latch which is in abutting fit with a striker of the main electromagnet and is driven by the main electromagnet to drive the latch shaft to rotate and an auxiliary latch which is in abutting fit with a striker of the auxiliary electromagnet and is driven by the auxiliary electromagnet to drive the latch shaft to rotate are arranged on the latch shaft, the main latch is provided with a stopping position matched with a pawl stopping stop and a yielding position yielding the pawl, the auxiliary latch drives the main latch to move through the latch shaft to enable the main latch to be in the yielding position, and the main latch and the auxiliary latch are arranged at intervals along the axial direction of the latch shaft.
2. The spring operating mechanism of claim 1, wherein the primary electromagnet and the secondary electromagnet are axially disposed along the latch shaft, and the primary latch and the secondary latch are disposed in parallel with the urging surface of the corresponding striker in abutting engagement.
3. The spring operated mechanism of claim 2 wherein the frame has two latch shaft openings spaced axially along the latch shaft for rotational engagement with the latch shaft, the primary latch being disposed on the portion of the latch shaft between the two latch shaft openings and the secondary latch being disposed on the portion of the latch shaft on a side of one of the latch shaft openings facing away from the other latch shaft opening.
4. The spring operating mechanism of claim 2 or 3 further comprising an electromagnet mounting bracket for mounting the primary electromagnet and the secondary electromagnet, the primary electromagnet and the secondary electromagnet being mounted to the frame by the electromagnet mounting bracket.
5. The circuit breaker comprises a circuit breaker body and a spring operating mechanism, wherein the spring operating mechanism comprises a rack, a pawl and a latch shaft arranged on the rack, and is characterized in that a main electromagnet and an auxiliary electromagnet which work independently are further arranged on the rack, a main latch which is in abutting fit with a striker of the main electromagnet and is driven by the main electromagnet to drive the latch shaft to rotate and an auxiliary latch which is in abutting fit with a striker of the auxiliary electromagnet and is driven by the auxiliary electromagnet to drive the latch shaft to rotate are arranged on the latch shaft, the main latch is provided with a stopping position which is in stopping fit with the pawl and a yielding position which yields the pawl, the auxiliary latch drives the main latch to move through the latch shaft to enable the main latch to be in the yielding position, and the main latch and the auxiliary latch are axially arranged at intervals along the latch shaft.
6. The circuit breaker of claim 5, wherein the primary electromagnet and the secondary electromagnet are arranged along an axial direction of the latch shaft, and the primary latch and the secondary latch are disposed in parallel with a pushing surface in abutting engagement with the corresponding striker.
7. The circuit breaker as claimed in claim 6, wherein the frame is provided with two latch shaft through holes rotatably fitted to the latch shaft at intervals in an axial direction of the latch shaft, the main latch is provided on a portion of the latch shaft located between the two latch shaft through holes, and the sub latch is provided on a portion of the latch shaft on a side of one of the latch shaft through holes facing away from the other latch shaft through hole.
8. The circuit breaker of claim 6 or 7, wherein the spring actuator further comprises an electromagnet mounting base for mounting the primary electromagnet and the secondary electromagnet, the primary electromagnet and the secondary electromagnet being mounted to the frame via the electromagnet mounting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341071.0A CN110137045B (en) | 2019-04-25 | 2019-04-25 | Spring operating mechanism and circuit breaker using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341071.0A CN110137045B (en) | 2019-04-25 | 2019-04-25 | Spring operating mechanism and circuit breaker using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110137045A CN110137045A (en) | 2019-08-16 |
| CN110137045B true CN110137045B (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910341071.0A Active CN110137045B (en) | 2019-04-25 | 2019-04-25 | Spring operating mechanism and circuit breaker using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110137045B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192766B (en) * | 2019-12-20 | 2021-12-17 | 河南平高电气股份有限公司 | Spring operating mechanism and circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2361178A (en) * | 1942-05-30 | 1944-10-24 | Westinghouse Electric & Mfg Co | Circuit breaker mechanism |
| CN203423118U (en) * | 2013-06-20 | 2014-02-05 | 厦门华电开关有限公司 | Circuit breaker operating mechanism and force-reducing switching-on holding device thereof |
| CN103959419A (en) * | 2011-12-02 | 2014-07-30 | 西门子公司 | Switching-device tripping apparatus |
| CN206619519U (en) * | 2017-01-04 | 2017-11-07 | 新东北电气集团超高压有限公司 | The independent double tripping electromagnets of spring operating mechanism |
| CN109166741A (en) * | 2018-09-12 | 2019-01-08 | 平高集团有限公司 | A kind of breaker, spring operating mechanism and its latch assembly |
-
2019
- 2019-04-25 CN CN201910341071.0A patent/CN110137045B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2361178A (en) * | 1942-05-30 | 1944-10-24 | Westinghouse Electric & Mfg Co | Circuit breaker mechanism |
| CN103959419A (en) * | 2011-12-02 | 2014-07-30 | 西门子公司 | Switching-device tripping apparatus |
| CN203423118U (en) * | 2013-06-20 | 2014-02-05 | 厦门华电开关有限公司 | Circuit breaker operating mechanism and force-reducing switching-on holding device thereof |
| CN206619519U (en) * | 2017-01-04 | 2017-11-07 | 新东北电气集团超高压有限公司 | The independent double tripping electromagnets of spring operating mechanism |
| CN109166741A (en) * | 2018-09-12 | 2019-01-08 | 平高集团有限公司 | A kind of breaker, spring operating mechanism and its latch assembly |
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| Publication number | Publication date |
|---|---|
| CN110137045A (en) | 2019-08-16 |
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