CN108054063B - Tripping device for circuit breaker - Google Patents
Tripping device for circuit breaker Download PDFInfo
- Publication number
- CN108054063B CN108054063B CN201810006220.3A CN201810006220A CN108054063B CN 108054063 B CN108054063 B CN 108054063B CN 201810006220 A CN201810006220 A CN 201810006220A CN 108054063 B CN108054063 B CN 108054063B
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- Prior art keywords
- tripping
- crank arm
- energy storage
- arm
- shaft
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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
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- Media Introduction/Drainage Providing Device (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a tripping device for a circuit breaker, which comprises a tripping bracket, a tripping energy storage retaining arm, a retaining crank arm shaft, a tripping output crank arm, a tripping driving crank arm and a tripping half shaft, wherein the retaining crank arm shaft is rotatably arranged at the upper end of the tripping bracket, the tripping energy storage retaining arm and the tripping output crank arm are fixed on the retaining crank arm shaft, the upper end of the tripping energy storage retaining arm is connected with the end part of a main shaft connecting crank arm through an energy storage component, and the upper end of the tripping output crank arm is correspondingly arranged with the half shaft crank arm; the tripping half shaft is rotatably arranged at the lower end of the tripping bracket, and the tripping half shaft and the tripping driving crank arm are fixedly arranged on the tripping half shaft. The invention has reasonable structural design, can ensure that the breaker can reliably trip and break the brake under the low-voltage and low-energy state of fault signals, can be used as option configuration, is added into the unhooking device of the original high-voltage breaker, and does not influence the breaking and unhooking functions of the original normal voltage.
Description
Technical Field
The invention relates to the field of low-voltage and low-energy tripping devices for high-voltage electric appliances, in particular to a tripping device for a circuit breaker.
Background
At present, a switching-off coil provided for switching-off and tripping of a high-voltage circuit breaker generally has rated voltage of 110V or 220V, and a contact tripping device with a level of hundreds of watts is required for transient power to enable the high-voltage circuit breaker to complete a switching-off function.
In some places with strict fault protection control requirements, the trip and brake separation function is often required to be completed when low voltage and small energy are input (for example, the input voltage is less than 24V and the input power is only in watt level). This is not possible with the unhooking and breaking devices of conventional high voltage circuit breakers.
Disclosure of Invention
The invention aims to provide a tripping device for a circuit breaker, which can reliably trip and break a circuit breaker under the condition of low voltage and small energy of fault signals, can be used as option configuration, is added into a tripping device of an original high-voltage circuit breaker, and does not influence the breaking and unhooking functions of the original normal voltage so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the tripping device comprises a tripping bracket, a tripping energy storage retaining arm, a retaining crank arm, a tripping output crank arm, a tripping driving crank arm and a tripping half shaft, wherein the retaining crank arm is rotatably arranged at the upper end of the tripping bracket, the retaining crank arm is fixedly provided with the tripping energy storage retaining arm and the tripping output crank arm, the upper end of the tripping energy storage retaining arm is connected with the end part of the main shaft connecting crank arm through an energy storage component, the upper end of the tripping output crank arm is correspondingly arranged with the half shaft crank arm, and when the retaining crank arm rotates, the tripping output crank arm can drive the half shaft crank arm to rotate;
the tripping half shaft is rotatably arranged at the lower end of the tripping bracket, and the tripping half shaft is fixedly provided with a limiting part for limiting the rotation of the lower end of the tripping energy storage retaining arm and a tripping driving crank arm for driving the tripping half shaft to rotate.
As a further scheme of the invention: the tripping device also comprises an electromagnet connected with the fault signal end, and a magnet mandrel for pushing the tripping driving crank arm is arranged on the electromagnet.
As a further scheme of the invention: the energy storage assembly comprises a tripping energy storage spring, two ends of the tripping energy storage spring are respectively connected with a first hanging spring rod and a second hanging spring rod, the end part of the first hanging spring rod is fixed at the upper end of the tripping energy storage retaining arm, and the end part of the second hanging spring rod is fixed at the end part of the main shaft connecting crank arm.
Compared with the prior art, the invention has the beneficial effects that: when the breaker is switched on, a main shaft connected crank arm arranged on the main shaft rotates, the trip energy storage spring is lengthened, the trip energy storage spring is connected with a trip energy storage maintaining arm of a tripping device, and the trip energy storage maintaining arm is maintained at a home position under the limitation of a trip half shaft on the trip half shaft; when the fault occurs, the coil of the electromagnet is electrified, the magnet mandrel of the electromagnet can push the trip driving crank arm to drive the trip half shaft to rotate, so that the lower end of the trip energy storage retaining arm is separated from the limit of the trip half shaft, trip is realized, the trip energy storage retaining arm can rotate under the action of the trip energy storage spring and rotate by a certain angle, the trip output crank arm simultaneously rotates, then, the trip output crank arm can drive the half shaft crank arm to rotate, and the breaker half shaft of the breaker is driven to rotate, so that the trip of the breaker is realized, and the operation and the use are convenient.
Drawings
Fig. 1 is a schematic structural view of a trip device for a circuit breaker according to the present invention;
fig. 2 is a schematic diagram of a right-hand view of a trip device for a circuit breaker according to the present invention;
FIG. 3 is a schematic view of the trip device for a circuit breaker of the present invention in section A-A of FIG. 1;
fig. 4 is a schematic view showing a structure of a trip device for a circuit breaker according to the present invention in section B-B of fig. 1;
FIG. 5 is a schematic diagram of the trip device energy storage state in the trip device for a circuit breaker of the present invention;
fig. 6 is a schematic diagram of a release state of a trip device in the trip device for a circuit breaker according to the present invention.
In the accompanying drawings: 1. the circuit breaker half shaft, 2, half shaft crank arm, 3, trip energy storage spring, 4, electromagnet, 5, main shaft connection crank arm, 6, trip drive crank arm, 7, trip support, 8, trip energy storage holding arm, 9, first hanging spring rod, 10, holding crank arm shaft, 11, trip output crank arm, 12, trip half shaft, 13, second hanging spring rod.
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.
The invention discloses a tripping device for a circuit breaker, which is shown in figures 1, 2, 3, 4, 5 and 6, and comprises a circuit breaker half shaft 1 for driving the circuit breaker to trip and a main shaft connecting crank arm 5 arranged on a main shaft of a circuit breaker to be closed, wherein a half shaft crank arm 2 is fixedly arranged on the circuit breaker half shaft 1, a tripping device is matched between the half shaft crank arm 2 and the main shaft connecting crank arm 5, the tripping device comprises a tripping bracket 7, a tripping energy storage retaining arm 8, a retaining crank arm shaft 10, a tripping output crank arm 11, a tripping driving crank arm 6 and a tripping half shaft 12, the retaining crank arm shaft 10 is rotatably arranged at the upper end of the tripping bracket 7, the retaining crank arm 10 is fixedly provided with a tripping energy storage retaining arm 8 and a tripping output crank arm 11, the upper end of the tripping energy storage retaining arm 8 is connected with the end of the main shaft connecting crank arm 5 through an energy storage component, the upper end of the tripping output crank arm 11 is correspondingly arranged with the half shaft crank arm 2, and when the retaining crank arm 10 rotates, the tripping output crank arm 11 drives the half shaft crank arm 2 to rotate;
the trip half shaft 12 is rotatably arranged at the lower end of the trip bracket 7, and a limiting part for limiting the rotation of the lower end of the trip energy storage retaining arm 8 and a trip driving crank arm 6 for driving the trip half shaft 12 to rotate are fixedly arranged on the trip half shaft 12.
The tripping device for the circuit breaker further comprises an electromagnet 4 connected with the fault signal end, and a magnet mandrel for pushing the tripping driving crank arm 6 is arranged on the electromagnet 4.
The energy storage assembly comprises a tripping energy storage spring 3, two ends of the tripping energy storage spring 2 are respectively connected with a first hanging spring rod 9 and a second hanging spring rod 13, the end part of the first hanging spring rod 9 is fixed at the upper end of the tripping energy storage holding arm 8, and the end part of the second hanging spring rod 13 is fixed at the end part of the main shaft connecting crank arm 5.
The working principle of the invention is as follows: when the tripping device does not release energy, the tripping energy storage retaining arm 8 in the tripping device is limited by a tripping half shaft on the tripping half shaft 12; referring to fig. 6, when the circuit breaker is closed, the main shaft connecting crank arm 5 rotates anticlockwise, the trip energy storage spring 3 is lengthened to store energy, when a fault signal exists, the magnet core shaft of the electromagnet 4 stretches out to push the trip driving crank arm 6 to rotate clockwise, so as to drive the trip half shaft 12 to rotate, after the trip half shaft rotates to a certain angle, the limit of the trip energy storage holding arm 8 is released, the trip energy storage holding arm 8 rotates under the drive of the trip energy storage spring 3, and the trip energy storage holding arm 8, the holding crank shaft 10 and the trip output crank arm 11 are fixedly connected, so that the trip output crank arm 11 is driven to rotate anticlockwise. When the tripping output crank arm 11 rotates, the half shaft crank arm 2 on the half shaft 1 of the circuit breaker is driven to rotate clockwise, so that the tripping action of the circuit breaker is completed.
When the device is switched on, energy is stored for the tripping energy storage spring 3, and when the device is switched off, the energy of the tripping energy storage spring 3 is released, so that the half shaft 1 of the circuit breaker is driven, and the circuit breaker can trip under the condition that a fault signal is low voltage (below 24V) and low energy (in watt level); the tripping device is characterized in that a tripping driving crank arm 6, a tripping energy storage holding arm 8, a holding crank arm shaft 10, a tripping output crank arm 11 and a tripping half shaft 12 are all arranged on a tripping bracket 7 to form a compact assembly unit, so that high sensitivity and high reliability are realized; the tripping energy storage retaining arm 8 is matched with the tripping half shaft 12 to realize a plurality of functions of energy storage, tripping, limiting and hanging springs.
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 (3)
1. The utility model provides a trip gear for circuit breaker, is including the main shaft connection turning arm that is used for the circuit breaker semi-axis of drive circuit breaker tripping and installs on the circuit breaker closing main shaft, its characterized in that: the circuit breaker is characterized in that a half shaft crank arm is fixedly arranged on the half shaft of the circuit breaker, a tripping device is matched between the half shaft crank arm and a main shaft connecting crank arm, the tripping device comprises a tripping bracket, a tripping energy storage retaining arm, a retaining crank arm shaft, a tripping output crank arm, a tripping driving crank arm and a tripping half shaft, the retaining crank shaft is rotatably arranged at the upper end of the tripping bracket, the tripping energy storage retaining arm and the tripping output crank arm are fixedly arranged on the retaining crank shaft, the upper end of the tripping energy storage retaining arm is connected with the end part of the main shaft connecting crank arm through an energy storage component, the upper end of the tripping output crank arm is correspondingly arranged with the half shaft crank arm, and when the retaining crank shaft rotates, the tripping output crank arm can drive the half shaft crank arm to rotate;
the tripping half shaft is rotatably arranged at the lower end of the tripping bracket, and the tripping half shaft is fixedly provided with a limiting part for limiting the rotation of the lower end of the tripping energy storage retaining arm and a tripping driving crank arm for driving the tripping half shaft to rotate.
2. The trip device for a circuit breaker according to claim 1, wherein: the tripping device also comprises an electromagnet connected with the fault signal end, and a magnet mandrel for pushing the tripping driving crank arm is arranged on the electromagnet.
3. The trip device for a circuit breaker according to claim 1, wherein: the energy storage assembly comprises a tripping energy storage spring, two ends of the tripping energy storage spring are respectively connected with a first hanging spring rod and a second hanging spring rod, the end part of the first hanging spring rod is fixed at the upper end of the tripping energy storage retaining arm, and the end part of the second hanging spring rod is fixed at the end part of the main shaft connecting crank arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006220.3A CN108054063B (en) | 2018-01-04 | 2018-01-04 | Tripping device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006220.3A CN108054063B (en) | 2018-01-04 | 2018-01-04 | Tripping device for circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108054063A CN108054063A (en) | 2018-05-18 |
| CN108054063B true CN108054063B (en) | 2023-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006220.3A Active CN108054063B (en) | 2018-01-04 | 2018-01-04 | Tripping device for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108054063B (en) |
Citations (13)
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|---|---|---|---|---|
| DE102007010270B3 (en) * | 2007-03-02 | 2008-09-04 | Siemens Ag | Residual-current circuit breaker has connecting piece of spring that is arranged on projection during passing holding element of off-position into on-position in intermediate position |
| CN201397759Y (en) * | 2009-05-12 | 2010-02-03 | 安徽龙波电气有限公司 | Vacuum circuit breaker switch-on holding structure |
| CN202258860U (en) * | 2011-09-09 | 2012-05-30 | 宁波舜利高压开关科技有限公司 | Control mechanism opening release |
| CN202434406U (en) * | 2011-10-28 | 2012-09-12 | 余姚市华宇电器有限公司 | Closing maintenance structure for GIS breaker mechanism |
| CN202678185U (en) * | 2012-06-08 | 2013-01-16 | 余姚市华宇电器有限公司 | Switch interlocking structure of breaker mechanism |
| CN102881512A (en) * | 2012-09-24 | 2013-01-16 | 无锡市新一代电力电器有限公司 | Manual quickly-closed breaker mechanism with free tripping function |
| CN103956303A (en) * | 2014-04-18 | 2014-07-30 | 大全集团有限公司 | Disconnector quick-release mechanism |
| CN104319196A (en) * | 2014-10-14 | 2015-01-28 | 中国西电电气股份有限公司 | Closing keeping and break-brake tripping device for breaker spring operating mechanism |
| CN104766768A (en) * | 2015-04-29 | 2015-07-08 | 黄国强 | Operating mechanism for circuit breaker |
| WO2016008251A1 (en) * | 2014-07-17 | 2016-01-21 | 谢翠斌 | Modular breaker |
| CN106373822A (en) * | 2016-10-20 | 2017-02-01 | 河南平高通用电气有限公司 | Spring operating mechanism of circuit breaker |
| CN206225283U (en) * | 2016-11-21 | 2017-06-06 | 福建中网电气有限公司 | A kind of 35kV floor type high voltages AC vacuum circuit-breaker spring operating mechanism |
| CN207743174U (en) * | 2018-01-04 | 2018-08-17 | 库柏(宁波)电气有限公司 | A kind of breaker trip gear |
-
2018
- 2018-01-04 CN CN201810006220.3A patent/CN108054063B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007010270B3 (en) * | 2007-03-02 | 2008-09-04 | Siemens Ag | Residual-current circuit breaker has connecting piece of spring that is arranged on projection during passing holding element of off-position into on-position in intermediate position |
| CN201397759Y (en) * | 2009-05-12 | 2010-02-03 | 安徽龙波电气有限公司 | Vacuum circuit breaker switch-on holding structure |
| CN202258860U (en) * | 2011-09-09 | 2012-05-30 | 宁波舜利高压开关科技有限公司 | Control mechanism opening release |
| CN202434406U (en) * | 2011-10-28 | 2012-09-12 | 余姚市华宇电器有限公司 | Closing maintenance structure for GIS breaker mechanism |
| CN202678185U (en) * | 2012-06-08 | 2013-01-16 | 余姚市华宇电器有限公司 | Switch interlocking structure of breaker mechanism |
| CN102881512A (en) * | 2012-09-24 | 2013-01-16 | 无锡市新一代电力电器有限公司 | Manual quickly-closed breaker mechanism with free tripping function |
| CN103956303A (en) * | 2014-04-18 | 2014-07-30 | 大全集团有限公司 | Disconnector quick-release mechanism |
| WO2016008251A1 (en) * | 2014-07-17 | 2016-01-21 | 谢翠斌 | Modular breaker |
| CN104319196A (en) * | 2014-10-14 | 2015-01-28 | 中国西电电气股份有限公司 | Closing keeping and break-brake tripping device for breaker spring operating mechanism |
| CN104766768A (en) * | 2015-04-29 | 2015-07-08 | 黄国强 | Operating mechanism for circuit breaker |
| CN106373822A (en) * | 2016-10-20 | 2017-02-01 | 河南平高通用电气有限公司 | Spring operating mechanism of circuit breaker |
| CN206225283U (en) * | 2016-11-21 | 2017-06-06 | 福建中网电气有限公司 | A kind of 35kV floor type high voltages AC vacuum circuit-breaker spring operating mechanism |
| CN207743174U (en) * | 2018-01-04 | 2018-08-17 | 库柏(宁波)电气有限公司 | A kind of breaker trip gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108054063A (en) | 2018-05-18 |
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