CN110544608A - Auxiliary mechanism of circuit breaker - Google Patents
Auxiliary mechanism of circuit breaker Download PDFInfo
- Publication number
- CN110544608A CN110544608A CN201810537655.0A CN201810537655A CN110544608A CN 110544608 A CN110544608 A CN 110544608A CN 201810537655 A CN201810537655 A CN 201810537655A CN 110544608 A CN110544608 A CN 110544608A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- circuit breaker
- spring
- auxiliary mechanism
- energy storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 119
- 238000004146 energy storage Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 abstract 3
- 230000009471 action Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- 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
- H01H71/1009—Interconnected mechanisms
-
- 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
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
-
- 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
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an auxiliary mechanism of a circuit breaker, and belongs to the technical field of switch cabinets. The auxiliary mechanism comprises a base and a mechanism main shaft (3), and is characterized in that the auxiliary mechanism comprises an installation support (101), a main shaft cantilever (102) and an energy storage mechanism, wherein the main shaft cantilever (102) is installed on the mechanism main shaft (3) and rotates along with the mechanism main shaft, the installation support (101) is fixed on the base and is used for installing the auxiliary mechanism on the circuit breaker, and the energy storage mechanism is arranged between the main shaft cantilever (102) and the installation support (101) and is used for storing energy in the opening and closing processes of the circuit breaker and turning the acting force direction of the main shaft cantilever (102) after the stored energy reaches the maximum value. The auxiliary mechanism of the circuit breaker provided by the invention can improve the breaking capacity of the main mechanism and the short endurance capacity of the main mechanism.
Description
Technical Field
The invention belongs to the technical field of switch cabinets, and particularly relates to an auxiliary mechanism of an operating mechanism of a low-voltage circuit breaker.
Background
In electrical distribution appliances, circuit breakers are used to distribute electrical energy and to protect lines and equipment from damage due to faults such as overloads, short circuits, etc. With the increase of power consumption and the development of high-power electric appliances, various indexes of the circuit breaker are continuously improved, particularly the short-time tolerance index. When the volume of the breaker and the like are not changed, if the short-tolerance performance is to be improved, the force value of a moving contact spring needs to be increased; the increase of the spring force value of the moving contact requires the increase of the main spring force value of the mechanism. On the other hand, in order to improve breaking capacity, an auxiliary mechanism of a breaker in the current market generally needs to increase a force value of a brake-separating tension spring, and the brake-separating tension spring can offset a part of force value of a main spring, so that the breaking capacity and the short endurance capacity cannot be simultaneously and greatly improved, and the requirements of high-index users (particularly some wind power projects) cannot be met.
Chinese patent publication No. CN 20216743U discloses a large-capacity circuit breaker operating mechanism, which includes a main mechanism, an auxiliary mechanism, and a main shaft penetrating through the main mechanism and the auxiliary mechanism, wherein the auxiliary mechanism has a bracket and a needle bearing disposed on the bracket, the main shaft penetrates through the auxiliary mechanism through a hole disposed on the bracket, and the needle bearing and the main shaft are arranged in a rolling manner. The circuit breaker operating mechanism only reduces the friction resistance when the main shaft acts through the needle bearing during opening, namely only plays the role of an opening tension spring, and fails to improve the short endurance capacity of the main mechanism.
Disclosure of Invention
The invention aims to provide an auxiliary mechanism which can improve the breaking capacity of a main mechanism and the short endurance capacity of the main mechanism.
Specifically, the invention is realized by adopting the following technical scheme: including base and mechanism main shaft (3), its characterized in that, complementary unit includes installing support (101), main shaft cantilever (102), energy storage mechanism, main shaft cantilever (102) are installed on mechanism main shaft (3), and construct the main shaft rotation at random, installing support (101) are fixed in on the base, are used for with complementary unit installs on the circuit breaker, energy storage mechanism sets up between main shaft cantilever (102) and installing support (101) for at circuit breaker separating brake and closing operation in-process energy storage, and take place the turn to the effort direction of main shaft cantilever (102) after the energy storage reaches the maximum value.
Further, the energy storage mechanism comprises a guide rod (103), a spring (105) and a spring support (107); the spring support (107) is provided with a guide hole which is rotatably arranged on the mounting bracket (101); one end of the guide rod (103) is hinged with the main shaft cantilever 102, and the other end is movably inserted into a guide hole of the spring support (107); the spring (105) is mounted on a spring support (107), one end of which acts on the end of the spring support (107) and the other end of which acts on the guide rod (103).
Further, the mounting bracket (101) comprises side plates which are arranged at intervals along the direction of the mechanism main shaft (3), and the main shaft cantilever (102) is arranged between the two side plates.
Further, the spring support (107) is a long strip-shaped plate-shaped structure with a width, one end of the spring support is rotatably mounted on one side plate of the mounting bracket (101), and the other end of the spring support is rotatably mounted on the other side plate of the mounting bracket (101).
Further, when the rotation center of the mechanism main shaft (3), the rotation center of the rotation shaft of the guide lever (103), and the rotation center of the spring holder (107) are aligned, the energy storage of the spring (105) reaches a maximum value.
Further, the guide rod (103) comprises a head part and a rod part, the diameter of the head part is larger than that of the rod part, the spring (105) is sleeved on the rod part, one end of the spring is abutted against the head part, and the other end of the spring is abutted against the spring support (107).
Furthermore, one end of the head is provided with a through groove, and the end part of the main shaft cantilever (102) is hinged with the head through a shaft pin (104) after being cut into the through groove.
On the other hand, the invention also provides a circuit breaker, which adopts the auxiliary mechanism (1) of the circuit breaker in the technical scheme, the auxiliary mechanism (1) of the circuit breaker is inserted into the mechanism main shaft (3) through a hole arranged on the mounting bracket (101), and the main shaft cantilever (102) is sleeved on the mechanism main shaft (3) and is driven to rotate by the mechanism main shaft (3).
The invention has the following beneficial effects: the auxiliary mechanism of the circuit breaker is used for assisting the mechanism to switch on and switch off. When the switch is switched on, the auxiliary mechanism assists the main mechanism to switch on so as to increase the pressure of the moving contact and increase the short endurance capacity; when the brake is opened, the auxiliary mechanism assists the main mechanism to open the brake so as to increase the brake opening speed and increase the breaking capacity. The energy storage spring of the auxiliary mechanism is used as an opening spring and a closing spring, so that the force value required by the main spring of the mechanism is effectively reduced, and the reliability of the product is ensured.
Drawings
Fig. 1 is an isometric view of a main mechanism in an open state according to embodiment 1 of the present invention.
Fig. 2 is an isometric view of the opening assist mechanism according to embodiment 1 of the present invention.
Fig. 3 is a sectional view of the opening state assist mechanism of embodiment 1 of the present invention along the axis of the guide bar.
Fig. 4 is an isometric view of the stored energy state primary mechanism of embodiment 1 of the present invention.
Fig. 5 is an isometric view of a stored energy condition assist mechanism according to embodiment 1 of the invention.
Fig. 6 is a sectional view of the energy storage state assist mechanism of embodiment 1 of the invention along the axis of the guide rod.
Fig. 7 is an isometric view of the closing state main mechanism according to embodiment 1 of the present invention.
Fig. 8 is an isometric view of a closing state assist mechanism according to embodiment 1 of the present invention.
Fig. 9 is a sectional view of the closing state assist mechanism of embodiment 1 of the present invention along the axial center of the guide bar.
Reference numerals in the drawings: 1-auxiliary mechanism, 101-mounting bracket, 102-main shaft cantilever, 103-guide rod, 104-shaft pin, 105-spring, 106-rotating shaft, 107-spring support, 2-main mechanism, 201-moving contact, 202-contact spring and 3-mechanism main shaft.
Detailed Description
The present invention will be described in further detail with reference to the following examples and the accompanying drawings.
Example 1:
The invention provides an auxiliary mechanism of a circuit breaker, which is mainly used for assisting a main mechanism to switch on and switch off.
Referring to fig. 1, an operating mechanism of a circuit breaker includes a main mechanism 2, an auxiliary mechanism 1, and a mechanism main shaft 3 penetrating the main mechanism and the auxiliary mechanism. The auxiliary mechanism 1 is composed of a mounting bracket 101, a main shaft cantilever 102, a guide rod 103, a shaft pin 104, a spring 105, a rotating shaft 106 and a spring support 107, wherein the guide rod 103, the spring 105 and the spring support 107 are energy storage mechanisms.
Referring to fig. 1 to 3, the assist mechanism 1 is inserted into the mechanism spindle 3 through a hole provided in the mounting bracket 101. The main shaft cantilever 102 is sleeved on the mechanism main shaft 3 and is driven by the mechanism main shaft 3 to rotate. The mounting bracket 101 is mounted on the circuit breaker base, and the spring holder 107 is connected to the mounting bracket 101 through a rotating shaft 106 and is rotatable about the rotating shaft 106. One end of the guide rod 103 is connected to the spindle arm 102 via a shaft pin 104, and the other end of the guide rod 103 is inserted into a guide hole of the spring support 107 and can slide freely in the guide hole of the spring support 107. The spring 105 is mounted on a spring support 107, one end of which acts on the spring support 107 and the other end of which acts on the guide rod 103. Referring to fig. 3, when the spindle arm 102 rotates clockwise, the guide rod 103 is pushed, and the spring 105 is compressed by the guide rod 103, so that the spring support 107 is driven to rotate around the rotating shaft 106; the spring 105 is compressed to push the guide rod 103, thereby rotating the spindle arm 102 counterclockwise.
In the closing process of the circuit breaker changing from the open state (refer to fig. 3) to the closed state (refer to fig. 9) through the energy storage state (refer to fig. 6), a main spring (not shown in the figure) of the main mechanism 2 drives the mechanism main shaft 3 to rotate clockwise, the mechanism main shaft 3 drives the main shaft cantilever 102 to rotate clockwise, the main shaft cantilever 102 pushes the guide rod 103 to move rightwards through the shaft pin 104, and the spring support 107 can rotate anticlockwise (refer to fig. 2) under the action of the guide rod 103 and the spring 105, so that the guide rod 103 can slide in the guide hole of the spring support 107. When the guide rod 103 slides to the right, the spring 105 is compressed to store energy. Referring to fig. 4 to 6, when the rotation center of the main shaft 3 of the mechanism, the center of the shaft pin 104 and the rotation center of the spring support 107 are aligned, the stored energy of the spring 105 reaches the maximum value, which is also the turning point of the acting force direction of the energy storage mechanism. Since the contact spring 202 does not generate a reaction force against the main spring (not shown) of the main mechanism 2, and the main spring of the main mechanism 2 is much larger than the force value of the spring 105, the energy storage mechanism can easily store energy to the maximum energy. Referring to fig. 7-9, when the main shaft 3 of the mechanism continues to rotate clockwise, the direction of the acting force of the energy storage mechanism is turned. Referring to fig. 9, the spring 105 pushes the guide rod 103 to move to the lower left, and the guide rod 103 acts on the main shaft cantilever 102 through the shaft pin 104, so that the main shaft cantilever 102 moves clockwise, that is, the main shaft 3 of the pushing mechanism is assisted to move clockwise, so as to ensure that the movable contact 201 is closed. At this time, the spring 105 functions as a closing spring to help the circuit breaker reach a closing state.
In the process of opening the circuit breaker from a closing state (refer to fig. 9) to an opening state (refer to fig. 3) through an energy storage state (refer to fig. 6), the moving contact 201 contacts with the fixed contact, the contact spring 202 is compressed, the contact spring 202 provides a corresponding counter force for the moving contact 201, at this time, the force value of the opening tension spring (not shown in the figure) of the main mechanism 2 and the counter force provided by the contact spring 202 for the moving contact 201 drive the main shaft 3 to rotate counterclockwise, (the force in the rightward direction in fig. 9) the main shaft 3 of the mechanism drives the main shaft cantilever 102 to rotate counterclockwise, the main shaft cantilever 102 pushes the guide rod 103 to move rightward through the shaft pin 104, and the spring support 107 can rotate clockwise (refer to fig. 8) under the action of the guide rod 103 and the spring 105, so. When the guide rod 103 slides to the right, the spring 105 is compressed to store energy. Referring to fig. 4 to 6, when the rotation center of the main shaft 3 of the mechanism, the center of the shaft pin 104 and the rotation center of the spring support 107 are aligned, the stored energy of the spring 105 reaches the maximum value, which is also the turning point of the acting force direction of the energy storage mechanism. At this time, the force value of the main spring (not shown in the figure) of the main mechanism 2 does not generate acting force on the mechanism spindle 3, and the sum of the force value of the opening spring (not shown in the figure) of the main mechanism 2 and the counter force given by the contact spring 202 to the movable contact 201 is much larger than the force value of the spring 105, so that the energy storage mechanism can easily store energy to the maximum energy. Referring to fig. 1 to 3, when the main shaft 3 of the mechanism continues to rotate counterclockwise, the direction of the acting force of the energy storage mechanism is turned. Referring to fig. 3, the spring 105 pushes the guide rod 103 to move upward and leftward, and the guide rod 103 acts on the main shaft cantilever 102 through the shaft pin 104, so that the main shaft cantilever 102 has a tendency to move counterclockwise, that is, the main shaft 3 of the pushing mechanism is helped to move counterclockwise, and the moving contact 201 is ensured to be opened. At this time, the spring 105 functions as a trip spring to help the circuit breaker reach a trip state.
The energy storage spring disclosed by the invention can be used as an opening spring and a closing spring, so that the force value of a main spring of the mechanism is effectively reduced, and the reliability of a product is ensured.
Although the present invention has been described in terms of the preferred embodiment, it is not intended that the invention be limited to the embodiment. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. The scope of the invention should therefore be determined with reference to the appended claims.
Claims (8)
1. The utility model provides an auxiliary mechanism of circuit breaker, the circuit breaker includes base and mechanism main shaft (3), its characterized in that, auxiliary mechanism includes installing support (101), main shaft cantilever (102), energy storage mechanism, main shaft cantilever (102) are installed on mechanism main shaft (3), and construct the main shaft rotation at random, installing support (101) are fixed in on the base, are used for with auxiliary mechanism installs on the circuit breaker, energy storage mechanism sets up between main shaft cantilever (102) and installing support (101) for at circuit breaker separating brake and closing process in-process energy storage, and take place the turn to the effort direction of main shaft cantilever (102) after the energy storage reaches the maximum value.
2. Auxiliary mechanism of a circuit breaker according to claim 1, characterized in that said energy storage mechanism comprises a guide rod (103), a spring (105) and a spring support (107); the spring support (107) is provided with a guide hole which is rotatably arranged on the mounting bracket (101); one end of the guide rod (103) is hinged with the main shaft cantilever 102, and the other end is movably inserted into a guide hole of the spring support (107); the spring (105) is mounted on a spring support (107), one end of which acts on the end of the spring support (107) and the other end of which acts on the guide rod (103).
3. Auxiliary mechanism for circuit breaker according to claim 1, characterized in that said mounting bracket (101) comprises side plates spaced apart in the direction of the main axis (3) of the mechanism, said main axis arm (102) being arranged between the two side plates.
4. The auxiliary mechanism of circuit breaker according to claim 3, wherein said spring support (107) is an elongated plate-like structure having a width, one end of which is rotatably mounted to one side plate of the mounting bracket (101), and the other end of which is rotatably mounted to the other side plate of the mounting bracket (101).
5. Auxiliary mechanism for circuit breakers according to claim 1, characterized in that the energy storage of the spring (105) is at a maximum when the centre of rotation of the main shaft (3) of the mechanism, the centre of rotation of the axis of rotation of the guide rod (103) and the centre of rotation of the spring support (107) are in a straight line.
6. The auxiliary mechanism of circuit breaker according to claim 2, characterized in that said guide rod (103) comprises a head portion and a rod portion, the diameter of the head portion is larger than that of the rod portion, said spring (105) is sleeved on the rod portion, one end of the spring abuts against the head portion, and the other end abuts against the spring support (107).
7. Auxiliary mechanism for circuit breaker according to claim 2 characterized in that one end of the head is provided with a through slot, and the end of the spindle cantilever (102) is hinged to the head by means of a pin (104) after cutting into the through slot.
8. a circuit breaker, characterized in that, the auxiliary mechanism (1) of the circuit breaker according to any one of claims 1-8 is adopted, the auxiliary mechanism (1) of the circuit breaker is inserted on the mechanism main shaft (3) through the hole arranged on the mounting bracket (101), and the main shaft cantilever (102) is sleeved on the mechanism main shaft (3) and is driven to rotate by the mechanism main shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537655.0A CN110544608A (en) | 2018-05-29 | 2018-05-29 | Auxiliary mechanism of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537655.0A CN110544608A (en) | 2018-05-29 | 2018-05-29 | Auxiliary mechanism of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110544608A true CN110544608A (en) | 2019-12-06 |
Family
ID=68701592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810537655.0A Pending CN110544608A (en) | 2018-05-29 | 2018-05-29 | Auxiliary mechanism of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110544608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808869A (en) * | 2021-09-15 | 2021-12-17 | 江苏大全凯帆开关股份有限公司 | Modular installation method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08148071A (en) * | 1994-11-25 | 1996-06-07 | Toshiba Corp | Multipole circuit breaker |
| US6087913A (en) * | 1998-11-20 | 2000-07-11 | General Electric Company | Circuit breaker mechanism for a rotary contact system |
| CN101335163A (en) * | 2008-08-05 | 2008-12-31 | 无锡唯特电气技术有限公司 | Operating mechanism of automatically jumping small circuit breaker |
| JP2011142012A (en) * | 2010-01-07 | 2011-07-21 | Mitsubishi Electric Corp | Circuit breaker |
| JP2013137971A (en) * | 2011-12-28 | 2013-07-11 | Fuji Electric Fa Components & Systems Co Ltd | Circuit breaker |
| CN204905077U (en) * | 2015-07-20 | 2015-12-23 | 江苏华唐电器有限公司 | Solid insulated cabinets circuit breaker operating device module |
| CN204905172U (en) * | 2015-09-11 | 2015-12-23 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker with aassessment contact wear |
| CN205984853U (en) * | 2016-09-08 | 2017-02-22 | 浙江人民电器有限公司 | Operating mechanism of disconnector |
| CN208478266U (en) * | 2018-05-29 | 2019-02-05 | 江苏大全凯帆开关有限公司 | A kind of auxiliary body of breaker |
-
2018
- 2018-05-29 CN CN201810537655.0A patent/CN110544608A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08148071A (en) * | 1994-11-25 | 1996-06-07 | Toshiba Corp | Multipole circuit breaker |
| US6087913A (en) * | 1998-11-20 | 2000-07-11 | General Electric Company | Circuit breaker mechanism for a rotary contact system |
| CN101335163A (en) * | 2008-08-05 | 2008-12-31 | 无锡唯特电气技术有限公司 | Operating mechanism of automatically jumping small circuit breaker |
| JP2011142012A (en) * | 2010-01-07 | 2011-07-21 | Mitsubishi Electric Corp | Circuit breaker |
| JP2013137971A (en) * | 2011-12-28 | 2013-07-11 | Fuji Electric Fa Components & Systems Co Ltd | Circuit breaker |
| CN204905077U (en) * | 2015-07-20 | 2015-12-23 | 江苏华唐电器有限公司 | Solid insulated cabinets circuit breaker operating device module |
| CN204905172U (en) * | 2015-09-11 | 2015-12-23 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker with aassessment contact wear |
| CN205984853U (en) * | 2016-09-08 | 2017-02-22 | 浙江人民电器有限公司 | Operating mechanism of disconnector |
| CN208478266U (en) * | 2018-05-29 | 2019-02-05 | 江苏大全凯帆开关有限公司 | A kind of auxiliary body of breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808869A (en) * | 2021-09-15 | 2021-12-17 | 江苏大全凯帆开关股份有限公司 | Modular installation method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province Applicant after: Jiangsu Daquan Kaifan switch Co.,Ltd. Address before: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province Applicant before: Jiangsu Daquan Kaifan Switch Co.,Ltd. |