CN201374293Y - Transmission device for auxiliary contact of breaker - Google Patents
Transmission device for auxiliary contact of breaker Download PDFInfo
- Publication number
- CN201374293Y CN201374293Y CN200920041744U CN200920041744U CN201374293Y CN 201374293 Y CN201374293 Y CN 201374293Y CN 200920041744 U CN200920041744 U CN 200920041744U CN 200920041744 U CN200920041744 U CN 200920041744U CN 201374293 Y CN201374293 Y CN 201374293Y
- Authority
- CN
- China
- Prior art keywords
- contact
- spring
- cantilever
- auxiliary contact
- main
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a transmission device for an auxiliary contact of a breaker, belonging to the field of low-voltage apparatus technology. The transmission device comprises: an auxiliary contact, a bracket and a main shaft; the auxiliary contact is internally provided with a normally closed contact, a normally open contact and a push rod; a second spring is arranged on the push rod; the bracket is located below the auxiliary contact; the main shaft is located below the bracket; a cantilever is pivotally arranged on the main shaft, the lower end of the cantilever is articulated with the middle part of the main contact, the lower end of the main contact is articulated with the base of the breaker, and a movable contact in contact with a static contact is arranged at the upper end of the main contact. The utility model is characterized in that the transmission device further comprises a first spring and a connection rod, wherein the middle part of the connection rod is pivotally arranged on the bracket, the upper end of the connection rod is in contact with the push rod in the auxiliary contact, the lower end of the connection rod is connected with one end of the first spring, and the other end of the first spring is connected with the upper end of the cantilever. The utility model has the advantage that the transmission device not only increases the pull stroke, decreases the processing and mounting difficulty and has high transmission efficiency, but also has excellent impact-resistance buffering characteristics and has the capability to improve the operation reliability of the whole mechanism.
Description
Technical field
The utility model relates to a kind of transmission device that circuit breaker is realized a kind of circuit breaker auxiliary contact of changing between the operate condition that is used for, and is to the improvement of existing circuit breaker auxiliary contact drive mechanism, belongs to the low voltage electrical apparatus technology field.
Background technology
Being used for circuit breaker auxiliary contact drive mechanism scheme has a lot, the drive mechanism that is widely used on market at present comprises and is positioned at the support below the auxiliary contact and is positioned at main shaft below the support, rotary cantilever is arranged on main shaft, this cantilever contact rotating lever, the upper end of this rotating lever contacts the last end in contact of lower end and cantilever with push rod in the auxiliary contact; When main contact closure or disconnection, drive cantilever and rotate, drive rotating lever by cantilever and move, by rotating lever main contact closure and the state interlocking that disconnects are fed back on the auxiliary contact then.This structure can cause stroke shorter, the reliability deficiency of action, and this kind draw bail do not have buffering, part of damage easily behind the frequent movement, not only useful life short, but also can cause operation failure.
Summary of the invention
In view of above-mentioned existing problems, the purpose of this utility model is to overcome the deficiencies in the prior art, a kind of transmission device of circuit breaker auxiliary contact is provided, it can not only strengthen the pulling stroke, reduces the installation and processing difficulty, improve transmission efficiency, and make mechanism have certain shock proof damping characteristics, can increase the reliability of sleeve mechanism action.
The purpose of this utility model reaches like this, a kind of transmission device of circuit breaker auxiliary contact, comprise the auxiliary contact 8 that is installed on respectively on the circuit breaker pedestal, support 7, with main shaft 2, be provided with normally closed interlock 10 in the described auxiliary contact 8, normally open contact 9, push rod 11, on push rod 11, be equipped with and be used to second spring 12 that push rod 11 is resetted, described support 7 be positioned at auxiliary contact 8 below, described main shaft 2 is positioned at the below of support 7, hub setting rotationally has a cantilever 3 on main shaft 2, the middle part of the lower end of this cantilever 3 and main contact 1 is hinged, the lower end of main contact 1 and circuit breaker pedestal are hinged, the upper end of main contact 1 is provided with the moving contact that can contact with fixed contact, be characterized in: also include first spring 4 and connecting rod 6, axle 5 hub settings are rotationally passed through on support 7 in the middle part of described connecting rod 6, the upper end of connecting rod 6 contacts with push rod 11 in the auxiliary contact 8, the lower end of connecting rod 6 is connected with an end of first spring 4, and the other end of first spring 4 is connected with the upper end of cantilever 3; When main shaft 2 rotates, driving cantilever 3 rotates, cantilever 3 lower ends drive main contact 1 closed or disconnection, cantilever 3 upper ends spur first spring 4, first spring, 4 pulling connecting rods 6 rotate around axle 5, the push rod 11 that is promoted in the auxiliary contact 8 by connecting rod 6 moves up and down then, makes auxiliary contact 8 closed or disconnections, realizes the synchronous conversion of main contact 1 and auxiliary contact 8.
The utility model is because after adopting said structure, the beneficial effect that has: owing to adopted first spring 4, with respect to the rotating lever in the prior art, not only spur the characteristics that stroke strengthens, the installation and processing difficulty reduces, transmission efficiency is high; And after the mode of introducing the 4 this connections of first spring, have good shock proof damping characteristics, can increase the reliability of sleeve mechanism action, can be more safe and reliable reach the circuit breaker design requirement.
Description of drawings
Accompanying drawing is an example structure schematic diagram of the present utility model.
Among the figure: 1. main contact; 2. main shaft; 3. cantilever; 4. first spring; The axle; 6. connecting rod; 7. support; 8. auxiliary contact; 9. normally open contact; 10. normally closed interlock; 11. push rod; 12. second spring.
Embodiment
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.
See also accompanying drawing: the utility model has support 7 below auxiliary contact 8, below support 7, be provided with main shaft 2, rotary cantilever 3 is arranged on main shaft 2, the middle part of the lower end of this cantilever 3 and main contact 1 is hinged, the lower end of main contact 1 is articulated on the circuit breaker pedestal, the upper end of main contact 1 is provided with the moving contact that can contact with fixed contact, on support 7, utilize axle 5 to be hinged with a connecting rod 6, the upper end of connecting rod 6 contacts with push rod 11 in the auxiliary contact 8, the lower end of connecting rod 6 is connected with an end of first spring 4, and the other end of first spring 4 is connected with the upper end of cantilever 3; When main shaft 2 rotates, driving cantilever 3 rotates, cantilever 3 lower ends drive the pin joint of main contact 1 around its lower end and rotate, make the closed or disconnection of main contact, simultaneously, cantilever 3 upper ends drive 4 actions of first spring, then by 6 actions of first spring, 4 pulling connecting rods, the push rod 11 that promotes in the auxiliary contact 8 moves up and down, and makes auxiliary contact 8 closed or disconnections, realizes the synchronous conversion of main contact 1 and auxiliary contact 8.
Support 7 described in the utility model, auxiliary contact 8, main shaft 2 and main contact 1 can be installed on respectively on the circuit breaker pedestal.The lower end of the push rod 11 in auxiliary contact 8 is provided with and is used to second spring 12 that push rod 11 is resetted.
The utility model is provided with normally open contact 9 and normally closed interlock 10 in auxiliary contact 8.When the main shaft 2 of circuit breaker clockwise rotates, the cantilever 3 that drives on the main shaft 2 clockwise rotates, cantilever 3 lower ends drive the pin joint of main contact 1 around its lower end and rotate counterclockwise, the main contact closure, cantilever 3 upper ends spur first spring 4 simultaneously, be rotated counterclockwise around axle 5 by first spring 4 pulling connecting rods 6, the upper end of connecting rod 6 upwards promotes the push rod 11 in the auxiliary contact 8 again, makes normally open contacts 9 in the auxiliary contact 8 become closure, normally closed interlock 10 becomes disconnection; When the main shaft 2 of circuit breaker rotates counterclockwise, the cantilever 3 that drives on the main shaft 2 rotates counterclockwise, cantilever 3 lower ends drive the pin joint of main contact 1 around its lower end and clockwise rotate, main contact disconnects, simultaneously cantilever 3 rotates counterclockwise and reduces pulling force to first spring 4, connecting rod 6 is subjected to the promotion that resets of second spring 12 of push rod 11 lower ends, transfers to reset voluntarily around axle 5 dextrorotations.Push rod 11 moves down under the effect of spring force simultaneously, makes normally open contact 9 and normally closed interlock 10 recover original state.
Claims (1)
1, a kind of transmission device of circuit breaker auxiliary contact, comprise the auxiliary contact (8) that is installed on respectively on the circuit breaker pedestal, support (7), and main shaft (2), be provided with normally closed interlock (10) in the described auxiliary contact (8), normally open contact (9), push rod (11), on push rod (11), be equipped with and be used to second spring (12) that push rod (11) is resetted, described support (7) be positioned at auxiliary contact (8) below, described main shaft (2) is positioned at the below of support (7), hub setting rotationally has a cantilever (3) on main shaft (2), the middle part of lower end of this cantilever (3) and main contact (1) is hinged, the lower end and the circuit breaker pedestal of main contact (1) are hinged, the upper end of main contact (1) is provided with the moving contact that can contact with fixed contact, it is characterized in that also including first spring (4) and connecting rod (6), axle (5) hub setting is rotationally passed through on support (7) in the middle part of described connecting rod (6), the upper end of connecting rod (6) contacts with push rod (11) in the auxiliary contact (8), the lower end of connecting rod (6) is connected with an end of first spring (4), and the other end of first spring (4) is connected with the upper end of cantilever (3); When main shaft (2) rotates, driving cantilever (3) rotates, drive the closed or disconnection of main contact (1) by cantilever (3) lower end, cantilever (3) upper end spurs first spring (4) simultaneously, first spring (4) pulling connecting rod (6) rotates around axle (5), the push rod (11) that is promoted in the auxiliary contact (8) by connecting rod (6) moves up and down then, makes the closed or disconnection of auxiliary contact (8), realizes the synchronous conversion of main contact (1) and auxiliary contact (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041744U CN201374293Y (en) | 2009-04-02 | 2009-04-02 | Transmission device for auxiliary contact of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041744U CN201374293Y (en) | 2009-04-02 | 2009-04-02 | Transmission device for auxiliary contact of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374293Y true CN201374293Y (en) | 2009-12-30 |
Family
ID=41500375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920041744U Expired - Lifetime CN201374293Y (en) | 2009-04-02 | 2009-04-02 | Transmission device for auxiliary contact of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374293Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679615A (en) * | 2016-03-09 | 2016-06-15 | 国网河北省电力公司检修分公司 | Spring transmission based circuit breaker auxiliary contact conversion apparatus and circuit breaker control loop formed by same |
| CN106847638A (en) * | 2017-03-14 | 2017-06-13 | 江苏高博锐电气有限公司 | A kind of plug-in auxiliary contact |
| CN109343385A (en) * | 2018-09-28 | 2019-02-15 | 武汉德普新源科技有限公司 | A kind of rotary multipoint switch switching device, control system and control method |
| CN110571109A (en) * | 2018-06-06 | 2019-12-13 | 上海良信电器股份有限公司 | Auxiliary contact for universal circuit breaker |
-
2009
- 2009-04-02 CN CN200920041744U patent/CN201374293Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679615A (en) * | 2016-03-09 | 2016-06-15 | 国网河北省电力公司检修分公司 | Spring transmission based circuit breaker auxiliary contact conversion apparatus and circuit breaker control loop formed by same |
| CN106847638A (en) * | 2017-03-14 | 2017-06-13 | 江苏高博锐电气有限公司 | A kind of plug-in auxiliary contact |
| CN110571109A (en) * | 2018-06-06 | 2019-12-13 | 上海良信电器股份有限公司 | Auxiliary contact for universal circuit breaker |
| CN109343385A (en) * | 2018-09-28 | 2019-02-15 | 武汉德普新源科技有限公司 | A kind of rotary multipoint switch switching device, control system and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201374293Y (en) | Transmission device for auxiliary contact of breaker | |
| CN103681031B (en) | The interlock of change over switch | |
| CN204577267U (en) | The overlapping switching mechanism of neutral pole and automatic transfer switching electric appliance | |
| CN101819901B (en) | Driving device for two-step action type ground switch | |
| CN201829401U (en) | Cross-the-center closing isolation switch | |
| CN103617927A (en) | Long-break-distance contact structure capable of breaking rapidly | |
| CN203397999U (en) | High-voltage switch circuit breaker transmission mechanism | |
| CN204348602U (en) | A kind of novel breaker drive mechanism | |
| CN201652519U (en) | Door hook device of microwave oven | |
| CN201556873U (en) | Interlocking device of earth switch used for propelling mechanism | |
| CN201294199Y (en) | Manual brake-dividing device for high voltage AC vacuum circuit breaker | |
| CN201650614U (en) | Wind generator with centrifugal clutch | |
| CN201893274U (en) | Interlocking mechanism of permanent magnet vacuum circuit breaker | |
| CN201689845U (en) | Hydraulic electromagnetic breaker with free tripping function | |
| CN201126800Y (en) | Self-pushing self-pulling structure of breaker | |
| CN204289198U (en) | A kind of isolating switch of electric railway vertical-fracture | |
| CN202230934U (en) | Electric operating mechanism of three-position isolating switch | |
| CN207637701U (en) | A kind of dc circuit breaker operating mechanism | |
| CN203103147U (en) | Dual-auxiliary switch transmission device | |
| CN202015052U (en) | Power switch short travel mechanism of electric kettle | |
| CN202839436U (en) | Contact connector of isolating switch | |
| CN201315282Y (en) | Opening transmission device of vacuum circuit breaker | |
| CN201681730U (en) | Single-control switch fixed contact component | |
| CN201289812Y (en) | Operating mechanism of load switch | |
| CN201374280Y (en) | Four-bar mechanism of horizontal vacuum breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |
|
| CX01 | Expiry of patent term |