CN2588515Y - Contact for high-voltage isolation switch - Google Patents
Contact for high-voltage isolation switch Download PDFInfo
- Publication number
- CN2588515Y CN2588515Y CN 02287572 CN02287572U CN2588515Y CN 2588515 Y CN2588515 Y CN 2588515Y CN 02287572 CN02287572 CN 02287572 CN 02287572 U CN02287572 U CN 02287572U CN 2588515 Y CN2588515 Y CN 2588515Y
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- Prior art keywords
- isolation switch
- fingertip
- contact
- high voltage
- voltage isolation
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Abstract
The utility model relates to a high voltage isolation switch, particularly to a high voltage isolation switch contact head which comprises a static contact head assembly, a movable contact head assembly and an outer cover. The high voltage isolation switch contact head is characterized in that the static contact head assembly is composed of a hollow column type armature, a panel seat connected with the lower part of the armature and four pairs of contact fingers. The ends of two pairs of contact fingers are connected to the upper lower end surface and the lower end surface of the armature by pin shafts in an elastic mode, one end of other two pairs of contact fingers are oppositely respectively contacted with the column type surface of the armature, a spring device is arranged between the contact fingers which are opposite to each other in couples, a spring causing the static contact head assembly to be reset is installed in the hollow column type armature, the movable contact head assembly is composed of an electric conducting arm and a contact head petal which is connected to the end part of the electric conducting arm, and the movable contact head assembly is a casing in a flower sack shape. The utility model realizes that the periphery of a contact head is contacted and the pressure of a contact point is stable. The high voltage isolation switch contact head has the characteristics of automatic adjustment for contact pressure, simple structure and long service life, the electric property of the isolation switch contact head is enhanced and the operation and maintenance cost of an isolation switch is reduced.
Description
Technical field
The utility model relates to a kind of high voltage isolator, particularly high voltage isolation switch contact.
Background technology
High voltage isolator be used for branch, close the no load condition circuit; Safety is isolated repair apparatus and change-over circuit; And should be able to pass through rated current reliably in running status.High voltage isolator present and that this technology is more approaching has GW4, the GW7 type, its contact is sat by stationary contact, fingertip, spring and cylindrical contact constitute, the operation principle of its contact is: provide between stationary contact seat and fingertip and the contact pressure between cylindrical contact and fingertip by spring, the fingertip that is distributed in contact seat both sides during combined floodgate contacts with cylindrical contact is electric, the contact site of its contact only limits to the contact both sides, thereby contact wire grows up to the principal element for restriction contact current-carrying capacity, therefore contact is subjected to the influence of external environment condition when current-carrying moves, and for example dust and high temperature etc. very easily cause the contact heating; Constitute bridge circuit because of the contact of fingertip and spring on the other hand, the fingertip resistance unbalance increases, and causes the spring shunting, when spring heating annealing, quickens the contact heating, causes finally that contact is overheated to be burnt.
The inventor is for addressing this problem, " single arm type high voltage isolation switch contact " patent application had once been proposed, this application mainly improves from structure, cancelled extension spring, adopt the elastic force of electric conductor self, and increased the quantity of the contact point of fingertip and contact, owing to the multiple spot contact has weakened the heating mechanism that electric bridge forms.But because of failing to increase effectively the contact pressure of fingertip, and structure is complicated, thereby above-mentioned improvement can't be satisfied the demand.
Summary of the invention
The utility model provides the high voltage isolation switch contact of the full contact of a kind of periphery, and it has overcome the defective of existing contact heating in the prior art, has improved the current capacity of contact, and simple in structure, debugs easy to maintenance.
The technical solution of the utility model is: a kind of high voltage isolation switch contact, and comprise split and fixed contact assembly and moving contact component that can electric cooperation, place the outer cover of fixed contact assembly outside, it is characterized in that:
A. the fixed contact assembly is by the conduction pivot of a hollow cylindrical and the panel seat that links to each other with conduction pivot bottom with distinguish coupled in opposite directions four groups of fingertips in twos and form, the bearing pin that axially is through conduction pivot middle part cooperate elastic pressuring plate with an end elasticity of fingertip be connected the conduction pivot on, following two end faces, and outer cover is fixed on the fingertip by this compressing tablet, between in opposite directions four groups of fingertips spring assembly is being installed in twos, two groups of fingertips in opposite directions the cylinder both sides of conduction pivot with can be fixed together side by side around the fingertip that bearing pin rotates, in hollow column type conduction pivot, the spring that the fixed contact assembly is resetted is installed;
B. moving contact component is electrically connected at the contact lobe of conductive arm end by conductive arm and one and forms, and the contact lobe is a flower bag shape conductive shell that is formed by four cylindrical curved surface.
The bottom that links to each other with panel seat is fixed on the insulator, the outside portion of another termination equipment of panel seat.
Spring assembly is the quadrangular shape structure that is made of a plurality of curved leaf springs and coupled substrate, the corresponding layout of a plurality of curved leaf springs with fingertip, and the termination of curved leaf spring is connected with the middle part of fingertip.
Spring assembly is to be made of interior four torque springs that are provided with the rectangular frame of cross axle and are enclosed within on the cross axle, and the torque spring termination is connected the fingertip correspondence on the periphery of framework.
Spring assembly is to be established the rectangular frame of spring fitting device and be 90 degree distributions by interior, and respectively perpendicular to two groups of extension springs formations of fingertip, the two ends of extension spring are connected relative fingertip the periphery of rectangular frame respectively.
The conduction pivot by the wheel disc-shaped cap, be socketed in its bottom panel seat, and the armature plate that is installed in column " C " tee section between panel seat and the end cap that matches of end cap form.
The conduction pivot also can be the column hollow conductor structure that and panel seat are linked to be an integral body.
Back-moving spring is a torsion spring, and perforate and spring assembly that its termination passes conduction pivot cylinder join
Fingertip is connected to the conduction upper and lower end face of pivot and the elastic pressuring plate that makes outer cover be fixed thereon is a platy structure, this compressing tablet is middle part perk and curved plates with holes, and arranges with two fulcrum triangularities of compressing tablet.
The elastic pressuring plate that fingertip elasticity is connected the upper and lower end face of armature is the platy structure that the reverse in twos song in radial four terminations of cross sticks up.
Is a cambered surface in fingertip with the electric end face that contacts of conduction pivot.
The cross sectional shape that is connected the four prism type that the fingertip of spring assembly periphery surrounds in opposite directions and the outer contour of contact lobe are mutually.
The utility model under the same conditions, its fingertip increases with the line length that contacts between conduction pivot and the moving contact, contact point can adapt to its variation automatically, contact pressure is reliable and stable, thereby it is big to have current-carrying capacity, and electric property is stable, has improved the electric reliability of high voltage isolator on the whole.
Description of drawings
Accompanying drawing 1 is the cross section view of the utility model embodiment one;
Accompanying drawing 2 is the utility model moving contact structure stereogram;
Accompanying drawing 3 is the cross section view of the utility model embodiment two;
Accompanying drawing 4 is the utility model embodiment three spring assembly E-E cutaway views;
Accompanying drawing 5 is the end view of the utility model embodiment three spring assemblies.
Embodiment
Embodiment one:
As Fig. 1, shown in 2, high voltage isolation switch contact by can deciliter fixed contact assembly and moving contact component two parts form, the fixed contact assembly is by conduction pivot 9, be installed in the spring assembly between the fingertip facing each other, the spring 8 that places the made fixed contact assembly in the conduction pivot to reset, be installed in two groups of fingertips facing each other 5 of end cap 20 and panel seat 13 upper and lower surfaces respectively and be fixed on the periphery of spring assembly and one end side by side and abut against two groups of fingertips 6 on conduction pivot 9 cylinders with fingertip 5, two groups of fingertips 5 facing each other and outer cover 12 cooperate elastic pressuring plate 11 to connect on conduction pivot 9 by a bearing pin 10 that is through on armature plate 13 and the end cap 20, the lower surface, described compressing tablet 11 is middle part perk and curved plates 22 with holes, and this curved plates 22 is arranged with two fulcrum 23 triangularities on the compressing tablet.Conduction pivot 9 by wheel shape end cap 20, be socketed in end cap 20 belows panel seat 13, and the column armature plate 21 that is " C " shape section that is installed between panel seat 13 and the end cap 20 that matches of end cap 20 form.Fingertip 5 is a cambered surface with conduction pivot 9 electric ends that contact.The spring assembly of between two groups of fingertips 5 facing each other, installing, this device is by the quadrangular shape that constitutes with a plurality of curved leaf spring 17 vertical substrates that link to each other 31, and each curved leaf spring 17 and fingertip 5 corresponding layouts, the termination of curved leaf spring 17 is connected with the middle part of fingertip 5.One end of fingertip 6 contacts with armature plate 21 column types surface respectively in opposite directions.One end of spring 8 joins with substrate 31 by the perforate 18 of conduction pivot 9 front portions.The other end of panel seat 13 links to each other with external equipment, and is connected with bottom 34 on being fixed on insulator 15.
Moving contact component is electrically connected at the contact lobe 4 of conductive arm 3 ends by conductive arm 3 and one to be formed, and contact lobe 4 is flower bag shape conductive shells that formed by four cylindrical curved surface.The cross sectional shape of contact lobe 4 matches with the cross sectional shape of fixed contact assembly, and contact lobe 4 is when being incorporated into the fixed contact assembly, imposes on the elastic force of fingertip 5,6 by curved leaf spring 17, and the contact lobe of moving contact component is closely contacted with fingertip.
When high voltage isolation switch contact disconnects, the contact lobe 4 of moving contact component breaks away from the fixed contact assembly, the curved leaf spring that is connected with fingertip 5,6 17 recovers strains, and at this moment four of the fixed contact assembly groups of formed prism-shaped sectional dimensions of fingertip are less than the axial cross section of the contact lobe 4 that matches with it.
When high voltage isolation switch contact closed a floodgate, transmission mechanism drove conductive arm 3 rotations, and the prism structure that fingertip 5,6 and spring assembly are formed can rotate around bearing pin 10, at this moment an end of fingertip 5,6 respectively with the upper and lower end face of conduction pivot and cylinder electric contact of sliding.While fingertip 5, the suitable coupling and of sectional dimension in 6 prism-shaped that form less than the outer contour of moving contact, in the time of in moving contact component moves the paliform structure that is incorporated into the fixed contact assembly, drive fingertip 5,6 and the prismatic structure that constitutes of curved leaf spring 17 together rotate around bearing pin, make moving contact component fingertip 5 when being incorporated into the fixed contact assembly simultaneously, 6 all are subjected to outside expansionary force, make curved leaf spring 17 produce elastic force and act on fingertip 5,6, thereby form on the outer contour that contact pressure acts on the outer surface of conduction pivot 9 and contact lobe 4 its fingertip 5,6 outer surface and contact lobe 4 outlines at conduction pivot 9 produce electric contact simultaneously.
When the isolation switch contact separating brake, transmission mechanism drives conductive arm 3 reverse rotations, moving contact component moves along arching trajectory, break away from electric contact the with fingertip 5,6, at this moment the prismatic structure that constitutes by fingertip 5,6 and curved leaf spring 17 follow rotation and under the effect of torsion spring 8 axis around bearing pin 10 go to the separating brake position.
In the above-mentioned separating brake process, spring 8 also provides certain separating brake moment simultaneously, the operational torque when having alleviated the operating mechanism separating brake; And the prismatic structure that spring 8 can make fingertip 5,6 constitute when the isolation switch contact separating brake returns and remains on the separating brake position.
Embodiment two:
Shown in Fig. 2,3, on the basis of embodiment one, changed in twos structural shape, the structural shape of conduction pivot 9 and the structural shape of elastic pressuring plate of the spring assembly of installing between the fingertip in opposite directions.
Conduction pivot 9 is one and is inverted tubbiness, and its lower surface and panel seat 13 are fixedly linked, and panel seat 13 other ends link to each other with external equipment, and links to each other with bottom 34 on being fixed on insulator 15.In the cavity of tubbiness conduction pivot 9 spring 8 that the fixed contact assembly is resetted is installed, spring 8 terminations join by the perforate 18 of conduction pivot 9 fronts and the cross axle of spring assembly.Two groups of fingertips 5 facing each other and outer cover 12 cooperate elastic pressuring plate 28 to connect on conduction pivot 9 by a bearing pin 10 that axially is through on the conduction pivot 9, the lower surface, fingertip 5, one spring assembly is installed between 6, this spring assembly is to be installed in respectively on the cross axle 25 by 4 torsion springs 26, one associated framework 27 is arranged in the outside of torsion spring 26 and cross axle 25, four torsion springs 26 are fixed on the certain position, the two ends fingertip 5 facing each other with it respectively of each torsion spring in four torsion springs 26,6 middle part links to each other, and makes 8 fingertips be surrounded a prism-shaped by torsion spring 26 symmetry tensions.Used elastic pressuring plate 28 is one and is the platy structure that the reverse in twos song in radial four terminations 29 of cross sticks up.
Operating principle when this structure mesohigh isolation switch contact divide-shut brake is identical with embodiment one.
Embodiment three:
As another kind of spring assembly has been shown among Fig. 4,5, on the basis of embodiment one or embodiment two, only changed the structural shape that is installed in the spring assembly between the fingertip, at rectangular frame 39 internal fixation that are provided with spring fitting device 41 two groups of extension springs 40 are arranged, two groups of extension springs 40 are axially vertical, and being 90 degree on two different cross sections distributes, the two ends of each extension spring in two groups of extension springs 40 links to each other with the middle part of its fingertip 5,6 facing each other respectively, makes 8 fingertips be surrounded a prism-shaped by the tension of extension spring symmetry.
Operating principle when this structure mesohigh isolation switch contact divide-shut brake is identical with embodiment one or embodiment two
Claims (12)
1. high voltage isolation switch contact comprises split and fixed contact assembly and moving contact component that can electric cooperation, places the outer cover of fixed contact assembly outside, it is characterized in that:
A. the fixed contact assembly is by the conduction pivot (9) of a hollow cylindrical and the panel seat (13) that links to each other with conduction pivot (9) bottom with distinguish coupled in opposite directions four groups of fingertips (5 in twos, 6) form, the bearing pin (10) that axially is through conduction pivot (9) middle part cooperates elastic pressuring plate (11,28) an end elasticity of fingertip (5) is connected conduction pivot (9) on, following two end faces, and outer cover is fixed on the fingertip (5) by this compressing tablet, between in opposite directions four groups of fingertips spring assembly is being installed in twos, two groups of fingertips (6) in opposite directions the cylinder both sides of conduction pivot (9) with can be fixed together side by side around the fingertip (5) that bearing pin (10) rotates, in hollow column type conduction pivot (9), the spring (8) that the fixed contact assembly is resetted is installed;
B. moving contact component is electrically connected at the contact lobe (4) of conductive arm (3) end by conductive arm (3) and one and forms, and contact lobe (4) is a flower bag shape conductive shell that is formed by four cylindrical curved surface.
2. according to the high voltage isolation switch contact of claim 1, it is characterized in that the bottom (34) that links to each other with panel seat (13) is fixed on the insulator (15), the outside portion of another termination equipment of panel seat (13).
3. high voltage isolation switch contact according to claim 1 and 2, it is characterized in that spring assembly is the quadrangular shape structure that is made of a plurality of curved leaf springs (17) and coupled substrate (31), a plurality of curved leaf springs (17) and the corresponding layout of fingertip (5,6), and the termination of curved leaf spring (17) is connected with the middle part of fingertip (5,6).
4. according to the high voltage isolation switch contact of claim 1 or 2, it is characterized in that spring assembly is to be made of interior four torque springs (26) that are provided with the rectangular frame (27) of cross axle (25) and are enclosed within on the cross axle (25), the torque spring termination is connected the periphery of framework (27) with fingertip (5,6) correspondence.
5. high voltage isolation switch contact according to claim 1 and 2, it is characterized in that spring assembly is to be established the rectangular frame (39) of spring fitting device (41) and be 90 degree distributions by interior, and the two groups of extension springs (40) perpendicular to fingertip (5,6) constitute respectively, and the two ends of extension spring are connected relative fingertip (5,6) periphery of rectangular frame (39) respectively.
6. high voltage isolation switch contact according to claim 1 and 2, it is characterized in that conducting electricity pivot (9) by wheel disc-shaped cap (20), be socketed in its bottom panel seat (13), and the armature plate (21) that is installed in column " C " tee section between panel seat (13) and the end cap that matches of end cap (20) form.
7. high voltage isolation switch contact according to claim 1 and 2, the pivot (9) that it is characterized in that conducting electricity also can be the column hollow conductor structure that and panel seat (13) are linked to be an integral body.
8. high voltage isolation switch contact according to claim 1 and 2 is characterized in that back-moving spring (8) is a torsion spring, and perforate (18) and spring assembly that its termination passes conduction pivot (9) cylinder join
9. high voltage isolation switch contact according to claim 1 and 2, it is characterized in that with fingertip (5) be connected to the conduction pivot (9) upper and lower end face and the elastic pressuring plate (11) that makes outer cover (12) be fixed thereon be a platy structure, this compressing tablet is middle part perk and curved plates with holes, and arranges with two fulcrums (23) triangularity of compressing tablet (11).
10. high voltage isolation switch contact according to claim 1 and 2 is characterized in that with the elastic pressuring plate (28) that fingertip (5,6) elasticity is connected the upper and lower end face of armature (9) be radial four terminations of cross (29) the reverse platy structures that stick up of song in twos.
11. high voltage isolation switch contact according to claim 1 and 2 is characterized in that fingertip (5) is a cambered surface with the electric end face that contacts of conduction pivot (9).
12. high voltage isolation switch contact according to claim 1 and 2, the cross sectional shape that it is characterized in that being connected the four prism type that the fingertip (5,6) of spring assembly periphery surrounds in opposite directions and the outer contour of contact lobe (4) are mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287572 CN2588515Y (en) | 2002-11-23 | 2002-11-23 | Contact for high-voltage isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287572 CN2588515Y (en) | 2002-11-23 | 2002-11-23 | Contact for high-voltage isolation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588515Y true CN2588515Y (en) | 2003-11-26 |
Family
ID=33747810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02287572 Expired - Fee Related CN2588515Y (en) | 2002-11-23 | 2002-11-23 | Contact for high-voltage isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588515Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436485B (en) * | 2008-12-22 | 2010-12-01 | 南京双京电器有限责任公司 | Minitype high voltage rotary isolation switch |
| CN104347306A (en) * | 2013-07-30 | 2015-02-11 | 乐星湖开电气（湖北）有限公司 | Static contact of isolating switch |
| CN109378229A (en) * | 2018-11-15 | 2019-02-22 | 许继（厦门）智能电力设备股份有限公司 | What a kind of insulator inserts made contact electrically connects structure |
| CN111799122A (en) * | 2019-04-08 | 2020-10-20 | 河南平芝高压开关有限公司 | Isolating switch and static contact component thereof |
-
2002
- 2002-11-23 CN CN 02287572 patent/CN2588515Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436485B (en) * | 2008-12-22 | 2010-12-01 | 南京双京电器有限责任公司 | Minitype high voltage rotary isolation switch |
| CN104347306A (en) * | 2013-07-30 | 2015-02-11 | 乐星湖开电气（湖北）有限公司 | Static contact of isolating switch |
| CN104347306B (en) * | 2013-07-30 | 2016-05-04 | 湖北湖开电气有限公司 | Static contact isolation switch |
| CN109378229A (en) * | 2018-11-15 | 2019-02-22 | 许继（厦门）智能电力设备股份有限公司 | What a kind of insulator inserts made contact electrically connects structure |
| CN109378229B (en) * | 2018-11-15 | 2024-03-12 | 许继（厦门）智能电力设备股份有限公司 | Electric connection structure with insulator insert as contact |
| CN111799122A (en) * | 2019-04-08 | 2020-10-20 | 河南平芝高压开关有限公司 | Isolating switch and static contact component thereof |
| CN111799122B (en) * | 2019-04-08 | 2023-03-31 | 河南平芝高压开关有限公司 | Isolating switch and static contact component thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |