CN102891049B - Contact structure of air circuit breaker - Google Patents
Contact structure of air circuit breaker Download PDFInfo
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- CN102891049B CN102891049B CN201210420128.4A CN201210420128A CN102891049B CN 102891049 B CN102891049 B CN 102891049B CN 201210420128 A CN201210420128 A CN 201210420128A CN 102891049 B CN102891049 B CN 102891049B
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- moving contact
- contact
- movable contact
- spring
- fulcrum shaft
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Abstract
The invention relates to a part structure of transmission equipment, and particularly relates to a contact structure of a direct current circuit breaker. A movable contact which is matched with a static contact point on a static contact is arranged on the front side of the upper section of a movable contact, a middle spring is arranged on the middle of the movable contact, a backward spring force is applied to the middle of the movable contact by the middle spring, a lower spring is arranged on the lower part of the movable contact, the lower spring applies a backward spring force to the lower part of the movable contact, a waist-shaped hole in an anteroposterior direction is formed in the lower part of the movable contact, the movable contact is matched with a fixed shaft pin through the waist-shaped hole so that the lower part of the movable contact can move forwards and backwards under the limit of the waist-shaped hole; and a push rod capable of applying a forward acting force to the middle of the movable contact is arranged on the rear side of the movable contact. According to the contact structure of the direct current circuit breaker, the requirement on member strength performance is lowered, and therefore the cost can be lowered; and meanwhile, the disconnecting speed can be increased, and the high action property requirement is met.
Description
Technical field
The present invention relates to the modular construction of controller switching equipment, specifically a kind of contact structure of air circuit breaker.
Background technology
Air circuit is when closed, drop-out current, because larger electrodynamic repulsion force and contact pressure etc. must be overcome, and certain divide-shut brake speed must be reached, make combined floodgate merit, separating brake merit increases along with the increasing of electric current, cause greatly improving the performance requirement of the materials such as contact, improve material cost, and then affect whole development, the application of high-current on-off equipment.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of while meeting contact performance, the contact structure of air circuit breaker that can reduce combined floodgate actuating force, reduce material performance requirement, improve opening velocity.
Contact structure of air circuit breaker of the present invention includes fixing fixed contact and mobilizable moving contact; The moving contact coordinated with the fixed contact on fixed contact is provided with on front side of described moving contact epimere; The middle part of described moving contact is provided with middle part spring, and middle part spring applies spring force backward to the middle part of moving contact; Described moving contact bottom is provided with lower springs, and lower springs applies spring force backward to the bottom of moving contact; The bottom of described moving contact also has the mounting hole of a fore-and-aft direction, and is coordinated with a fixing pivot pin by this mounting hole, enables moving contact bottom in the spacing lower forward and backward movement of mounting hole; Being provided with on rear side of described moving contact can to the push rod applying forward force in the middle part of moving contact, and push rod is driven by power set.
The middle part of described moving contact is provided with a middle part fulcrum shaft, and middle part spring passes through middle part fulcrum shaft to moving contact formation active force backward.
The bottom of described moving contact is provided with a bottom fulcrum shaft, and lower springs is formed moving contact active force backward by bottom fulcrum shaft.。
Described middle part block and bottom block are insulating material.
Described middle part spring and lower springs can be the stage clip be positioned on front side of moving contact or the extension spring be positioned on rear side of moving contact.
The present invention is by the reasonable setting of the parts force application locations such as push rod, middle part spring, lower springs, make whole device can make between moving contact and fixed contact, to have larger contact under the condition applying less actuating force, reduce the requirement to component strength performance, thus can reduce costs; Meanwhile, the present invention can improve opening velocity, meets higher performance requirement.
Accompanying drawing explanation
Fig. 1 is the "on" position structural representation of the embodiment of the present invention;
Fig. 2 is the gate-dividing state structural representation of the embodiment of the present invention.
Embodiment
As shown in the figure, this contact structure of air circuit breaker includes fixing fixed contact 2 and mobilizable moving contact 1; The moving contact 11 coordinated with the fixed contact 21 on fixed contact 2 is provided with on front side of described moving contact 1 epimere; Be provided with middle part spring 4 between the middle part of moving contact 1 and the middle part block 3 in the middle part of moving contact front, middle part spring is Compress Spring, to the middle part applying spring force backward of moving contact 1; Be provided with lower springs 6 between moving contact 1 bottom and the bottom block 5 being arranged on moving contact forward lower part, lower springs 6 is Compress Spring, to the bottom applying spring force backward of moving contact; The bottom of moving contact 1 also has the mounting hole 12 of a fore-and-aft direction, and is coordinated with a fixing pivot pin 7 by this mounting hole, enables moving contact bottom in the spacing lower forward and backward movement of mounting hole 12; Being provided with on rear side of moving contact 1 can to the push rod 8 applying forward force in the middle part of moving contact, and push rod is driven by power set.The middle part of moving contact 1 is provided with a middle part fulcrum shaft 13, and moving contact 1 is by middle part fulcrum shaft 13 and the effect of middle part spring 4 phase.The bottom of moving contact 1 is provided with a bottom fulcrum shaft 14, and moving contact 1 is by bottom fulcrum shaft 14 and the effect of lower springs 6 phase.Middle part block 3 and bottom block 5 are insulating material.Middle part spring and lower springs also can be the extension springs be positioned on rear side of moving contact.
Structural principle of the present invention is:
As shown in Figure 1, under "on" position, the active force applying forward in the middle part of moving contact by push rod 8, thus fulcrum shaft place forms fulcrum in the middle part of moving contact, at this moment at the effect lower moving contact of lower springs 6, there is the trend turned clockwise around middle part fulcrum shaft, moving contact 11 is contacted with fixed contact 21 compress, now the active force of lower springs plays the effect providing contact pressure;
As shown in Figure 2, when separating brake, actuating force on push rod 8 disappears, fulcrum in the middle part of moving contact 1 is disappeared, after moving a segment distance after now the active force of middle part spring 4 and lower springs 6 makes the rapid entirety of moving contact, be rotated counterclockwise around bottom fulcrum shaft 14 again, moving contact 11 is separated rapidly with fixed contact 21.
This breaker contact structure, can be used for DC air breaker, also can be used for exchanging air circuit.
Claims (5)
1. a breaker contact structure, includes fixing fixed contact (2) and mobilizable moving contact (1); The moving contact (11) coordinated with the fixed contact (21) on fixed contact (2) is provided with on front side of described moving contact (1) epimere; It is characterized in that: the middle part of moving contact (1) is provided with middle part spring (4), and middle part spring applies spring force backward to the middle part of moving contact (1); Moving contact (1) bottom is provided with lower springs (6), and lower springs (6) applies to left back spring force the bottom of moving contact; The bottom of moving contact (1) also has the mounting hole (12) of a fore-and-aft direction, and is coordinated with a fixing pivot pin (7) by this mounting hole, enables moving contact bottom in the spacing lower forward and backward movement of mounting hole (12); Moving contact (1) rear side is provided with can to the push rod (8) applying forward force in the middle part of moving contact, and push rod is driven by power set.
2. breaker contact structure according to claim 1, is characterized in that: the middle part of moving contact (1) is provided with middle part fulcrum shaft (13), and middle part spring (4) forms active force backward by middle part fulcrum shaft (13) to moving contact (1).
3. breaker contact structure according to claim 1, is characterized in that: the bottom of moving contact (1) is provided with a bottom fulcrum shaft (14), and lower springs (6) is formed moving contact (1) active force backward by bottom fulcrum shaft (14).
4. according to the breaker contact structure one of claim 1-3 Suo Shu, it is characterized in that: middle part block (3) and bottom block (5) are insulating material.
5. according to the breaker contact structure one of claim 1-3 Suo Shu, it is characterized in that: described middle part spring and lower springs are the stage clip be positioned on front side of moving contact or the extension spring be positioned on rear side of moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210420128.4A CN102891049B (en) | 2012-10-29 | 2012-10-29 | Contact structure of air circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210420128.4A CN102891049B (en) | 2012-10-29 | 2012-10-29 | Contact structure of air circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891049A CN102891049A (en) | 2013-01-23 |
| CN102891049B true CN102891049B (en) | 2015-03-18 |
Family
ID=47534518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210420128.4A Active CN102891049B (en) | 2012-10-29 | 2012-10-29 | Contact structure of air circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN102891049B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681371A (en) * | 2015-02-02 | 2015-06-03 | 大全集团有限公司 | Variable rotating shaft contact structure for direct current circuit breaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202871726U (en) * | 2012-10-29 | 2013-04-10 | 大全集团有限公司 | Contact structure of air circuit breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011008834A1 (en) * | 2011-01-19 | 2012-07-19 | Abb Ag | Service switching device |
| CN102403171A (en) * | 2011-11-21 | 2012-04-04 | 科都电气有限公司 | Contact structure for molded case circuit breaker and molded case circuit breaker using the same |
| CN102592897B (en) * | 2012-02-22 | 2013-07-03 | 西安交通大学 | DC (direct current) circuit breaker rapid operating mechanism with current limiting characteristic |
| CN102592902B (en) * | 2012-02-22 | 2013-07-17 | 西安交通大学 | High-speed opening operation mechanism of middle-and-low-voltage direct-current circuit breaker |
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2012
- 2012-10-29 CN CN201210420128.4A patent/CN102891049B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202871726U (en) * | 2012-10-29 | 2013-04-10 | 大全集团有限公司 | Contact structure of air circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN102891049A (en) | 2013-01-23 |
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Effective date of registration: 20160111 Address after: 212211 Jiangsu city of Yangzhong province science and Technology Park Road Xinba Daquan No. 11 Patentee after: Jiangsu Daqo Kfine Electric Co., Ltd. Address before: 212211 Jiangsu city of Zhenjiang province Yangzhong city new town of New South Road, No. 66 Patentee before: Daquan Group Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.11 Daquan Road, science and Technology Park, Xinba Town, Yangzhong City, Jiangsu Province Patentee after: JIANGSU DAQO KFINE ELECTRIC Co.,Ltd. Address before: No.11 Daquan Road, science and Technology Park, Xinba Town, Yangzhong City, Jiangsu Province Patentee before: JIANGSU DAQO KAIFAN ELECTRICAL APPLIANCE Co.,Ltd. |