CN203871245U - Connection structure of knife switch and static contact - Google Patents
Connection structure of knife switch and static contact Download PDFInfo
- Publication number
- CN203871245U CN203871245U CN201420280076.XU CN201420280076U CN203871245U CN 203871245 U CN203871245 U CN 203871245U CN 201420280076 U CN201420280076 U CN 201420280076U CN 203871245 U CN203871245 U CN 203871245U
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- CN
- China
- Prior art keywords
- fixed contact
- clamping plate
- disconnecting link
- static contact
- knife switch
- 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.)
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Abstract
The utility model discloses a connection structure of a knife switch and a static contact. The connection structure comprises the knife switch and the static contact. The knife switch comprises two clamp plates. The static contact has two parallel outer side surfaces connected with the inner side surfaces of the two clamp plates. A pivot bolt passes through the two clamp plates and the static contact and enables the clamp plates and the static contact to be connected together. One end of the pivot bolt is screwed with a locking nut. The two sides of the pivot bolt are sleeved with disc spring groups respectively which are pressed tightly to the outer side surfaces of the two clamp plates. The inner side surface, connected with the static contact, of each clamp plate is provided with an annular groove. The annular groove is equipped with circle-shaped spring touch fingers. The spring touch fingers are arranged between the outer side surfaces of the static contact and the annular grooves of the clamp plates. The middle lower portion of the static contact is fixedly arranged in the middle of an insulating support. The two clamp plates except a clamp mouth are wrapped by a silicon rubber sleeve. The connection structure can guarantee the contact between the knife switch and the static contact to be reliable; current passing capacity of the knife switch is improved; the heat of contact surfaces of the two is reduced; and the service life of the knife switch and the static contact is prolonged favorably.
Description
Technical field
The utility model relates to electric power system isolated switchgear manufacturing technology field, the syndeton of especially a kind of disconnecting link and fixed contact.
Background technology
In electric power system, isolating switch is a kind of common equipment, and isolating switch all needs to use disconnecting link conventionally, and disconnecting link one end is connected with the fixed contact of isolating switch one side, and the disconnecting link other end is provided with a jaws and matches with the fixed contact of isolating switch opposite side.
Existing disconnecting link all needs to comprise two clamping plate, two clamping plate and fixed contact link together by pivot joint bolt, because two clamping plate and fixed contact have electric current to pass through, the contact condition of two clamping plate and fixed contact contact-making surface directly affects size of current that disconnecting link can pass through and the degree of heat of disconnecting link and fixed contact junction, if two clamping plate of disconnecting link and fixed contact loose contact, also easily in both junctions, produce electric arc and damage disconnecting link and fixed contact, reduce the useful life of disconnecting link and fixed contact.
Two clamping plate in order to ensure disconnecting link can reliably contact with fixed contact, within on 04 25th, 2012, disclosing a patent No. is that ZL201120323737.9, name are called the utility model patent of " isolating switch disconnecting link fastening structure ", it comprises disconnecting link and connected fixed contact, both are connected by pivot joint screw rod, wherein: described screw rod is provided with dish spring group and presses on disconnecting link.The clamping force that the syndeton of this disconnecting link and fixed contact applies by dish spring group can make two clamping plate of disconnecting link can be clamped in preferably on two sides of fixed contact; But this syndeton is due to rigging error and stressed unbalanced of two clamping plate, and the Optimality of two clamping plate of disconnecting link and two contacts side surfaces of fixed contact need further improvement.
Utility model content
The technical problems to be solved in the utility model is to provide the syndeton of a kind of disconnecting link and fixed contact, can guarantee that disconnecting link contacts with the reliable of fixed contact, the discharge capacity that improves disconnecting link, reduces the heating of both contact-making surfaces, is conducive to extend the useful life of disconnecting link and fixed contact.
For achieving the above object, the technical solution of the utility model is: the syndeton of a kind of disconnecting link and fixed contact, comprise disconnecting link, fixed contact, disconnecting link comprises two clamping plate, fixed contact has two parallel lateral surfaces that are connected with two clamping plate medial surfaces, a pivot joint bolt links together both through two clamping plate and fixed contact, one end of pivot joint bolt is rotary with locking nut, pivot joint bolt both sides cover has dish spring group to be pressed on the lateral surface of two clamping plate, the medial surface that each clamping plate is connected with fixed contact is provided with annular groove, ring shape spring touch finger is housed on described annular groove, described spring touch finger is clipped between fixed contact lateral surface and the annular groove of clamping plate.
Further improve, described two clamping plate are coated by a silica gel sheath except jaws, and silica gel sheath is coated pivot joint bolt, locking nut and described dish spring group also.Can improve between isolating switch disconnecting link and disconnecting link, the dielectric strength between disconnecting link and ground connection, effectively prevent the phase fault of isolating switch or the generation of phase earth fault.
Further improve, fixed contact is provided with screwed hole away from the end face of one end of two clamping plate.Facilitate being connected of fixed contact and external bus.
Further improve, the middle and lower part of described fixed contact is fixed in the centre of an insulating support.Facilitate the setting of fixed contact.
Further improve, described insulating support upper periphery face is provided with a square-shaped flange again, and four angles of square-shaped flange are provided with installing hole.Facilitate disconnecting link, the integrally-built installation of fixed contact.
The utility model is owing to accompanying ring shape spring touch finger between two clamping plate at disconnecting link and the contact-making surface of fixed contact, and the effect by spring touch finger can overcome the rigging error of two clamping plate and fixed contact and the situation of the loose contact that two clamping plate discontinuity equalizations produce.Such two clamping plate were both pressed on two lateral surfaces of fixed contact by dish spring group, by two ring shape spring touch fingers, guarantee contacting of two clamping plate and two lateral surfaces of fixed contact again, can effectively improve the discharge capacity of disconnecting link, reduce the heating of two clamping plate of disconnecting link and fixed contact contact-making surface, prevent the damage of disconnecting link and fixed contact, effectively extend the useful life of disconnecting link and fixed contact
On the other hand, the utility model, by improving the discharge capacity of disconnecting link, reduces the heating of two clamping plate of disconnecting link and fixed contact contact-making surface, and the size that can dwindle disconnecting link, is conducive to the miniaturization of isolating switch.
Accompanying drawing explanation
Fig. 1 is the utility model stereogram;
Fig. 2 is the utility model front view;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the B place enlarged drawing of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing and concrete execution mode, the utility model is described in further detail.
Shown in Fig. 1 to Fig. 4, the syndeton of a kind of disconnecting link and fixed contact, comprise disconnecting link 1, fixed contact 2, disconnecting link comprises two clamping plate 11, 12, fixed contact 2 has and two clamping plate 11, two parallel lateral surfaces that 12 medial surfaces are connected, a pivot joint bolt 3 is through two clamping plate 11, 12 and fixed contact 2 both are linked together, one end of pivot joint bolt 3 is rotary with locking nut 4, pivot joint bolt 3 both sides covers have dish spring group 5 to be pressed on two clamping plate 11, on 12 lateral surface, two clamping plate 11, on 12 medial surfaces that are connected with fixed contact 2, be equipped with annular groove, ring shape spring touch finger 6 is housed on described annular groove, two spring touch fingers 6 are clipped in 2 two lateral surfaces of fixed contact and two clamping plate 11, between 12 annular groove.
Two clamping plate 11,12 are coated by a silica gel sheath 7 except jaws 13, and silica gel sheath 7 is coated pivot joint bolt 3, locking nut 4 and described dish spring group 5 also.
Fixed contact 2 is provided with screwed hole 21 away from the end face of one end of two clamping plate 11,12.
The middle and lower part of described fixed contact 2 is fixed in the centre of an insulating support 8.
Described insulating support 8 upper periphery faces are provided with a square-shaped flange 81, and four angles of square-shaped flange 81 are provided with installing hole 811.
Below be only preferred embodiment of the utility model, the change that those skilled in the art does to be equal to by claim all falls into the protection range of this case.
Claims (5)
1. the syndeton of a disconnecting link and fixed contact, comprise disconnecting link, fixed contact, disconnecting link comprises two clamping plate, fixed contact has two parallel lateral surfaces that are connected with two clamping plate medial surfaces, a pivot joint bolt links together both through two clamping plate and fixed contact, one end of pivot joint bolt is rotary with locking nut, pivot joint bolt both sides cover has dish spring group to be pressed on the lateral surface of two clamping plate, it is characterized in that: the medial surface that each clamping plate is connected with fixed contact is provided with annular groove, ring shape spring touch finger is housed on described annular groove, described spring touch finger is clipped between fixed contact lateral surface and the annular groove of clamping plate.
2. the syndeton of a kind of disconnecting link according to claim 1 and fixed contact, is characterized in that: described two clamping plate are coated by a silica gel sheath except jaws, and silica gel sheath is coated pivot joint bolt, locking nut and described dish spring group also.
3. the syndeton of a kind of disconnecting link according to claim 1 and fixed contact, is characterized in that: fixed contact is provided with screwed hole away from the end face of one end of two clamping plate.
4. according to a kind of disconnecting link described in claims 1 to 3 any one and the syndeton of fixed contact, it is characterized in that: the middle and lower part of described fixed contact is fixed in the centre of an insulating support.
5. the syndeton of a kind of disconnecting link according to claim 4 and fixed contact, is characterized in that: described insulating support upper periphery face is provided with a square-shaped flange, and four angles of square-shaped flange are provided with installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280076.XU CN203871245U (en) | 2014-05-29 | 2014-05-29 | Connection structure of knife switch and static contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280076.XU CN203871245U (en) | 2014-05-29 | 2014-05-29 | Connection structure of knife switch and static contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871245U true CN203871245U (en) | 2014-10-08 |
Family
ID=51652170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420280076.XU Active CN203871245U (en) | 2014-05-29 | 2014-05-29 | Connection structure of knife switch and static contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539713A (en) * | 2021-06-11 | 2021-10-22 | 华能伊敏煤电有限责任公司 | Improvement method based on excitation knife switch overheating or high-power knife switch overheating |
-
2014
- 2014-05-29 CN CN201420280076.XU patent/CN203871245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539713A (en) * | 2021-06-11 | 2021-10-22 | 华能伊敏煤电有限责任公司 | Improvement method based on excitation knife switch overheating or high-power knife switch overheating |
| CN113539713B (en) * | 2021-06-11 | 2023-07-07 | 华能伊敏煤电有限责任公司 | Method for improving overheat of exciting knife switch or high-power knife switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Connection structure of knife switch and static contact Effective date of registration: 20180530 Granted publication date: 20141008 Pledgee: Jimei Xiamen District Finance Company limited by guarantee Pledgor: Xiamen XEC Electric Co., Ltd. Registration number: 2018990000420 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200120 Granted publication date: 20141008 Pledgee: Jimei Xiamen District Finance Company limited by guarantee Pledgor: Xiamen XEC Electric Co., Ltd. Registration number: 2018990000420 |