CN104810186A - Moving contact unit and three-position switch with moving contact unit - Google Patents
Moving contact unit and three-position switch with moving contact unit Download PDFInfo
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- CN104810186A CN104810186A CN201410656565.5A CN201410656565A CN104810186A CN 104810186 A CN104810186 A CN 104810186A CN 201410656565 A CN201410656565 A CN 201410656565A CN 104810186 A CN104810186 A CN 104810186A
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- contact
- jaws
- fingertip
- moving
- ground connection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- Clamps And Clips (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention relates to a moving contact unit and a three-position switch with the moving contact unit. The moving contact unit comprises contact fingers arranged pairwise, the two revolution radial ends of the two contact fingers in one pair are provided with an isolated grounding clamp port and a static contact clamp port respectively, the isolated grounding clamp port is electrically connected with a corresponding functional contact, the static contact clamp port is electrically connected with a static contact, a suspended support piece is arranged between the isolated grounding clamp port and the static contact clamp port, the two contact fingers in the same pair swing along the width direction of the isolated grounding clamp port and the static contact clamp port relative to the suspended support piece by taking the suspended support piece as the fulcrum, the two revolution radial ends of the two contact fingers in the same pair are also provided with elastic contraction device for contracting the isolated grounding clamp port and the static contact clamp port, the moving contact unit further comprises a contact finger support through which the suspended support piece is fixedly mounted, and the contact fingers are erected on the contact finger support via the suspended support piece. The contact fingers in the contact unit can swing for a certain degree according to the centering requirement, convenience is provided for assembling and debugging, and use is convenient.
Description
Technical field
The present invention relates to a kind of moving-contact unit and use the three-station of this moving-contact unit.
Background technology
Three-station is generally used in combined electrical apparatus, can realize combined floodgate, separating brake and ground connection three kinds of functions.Such as conventional 35kV switchgear three-station both domestic and external, be direct dynamic structure, insulating contact or grounding contact are provided with spring touch finger, moving contact adopts direct acting plug in construction, during use, moving contact is linearly mobile to realize and being turned on or off of insulating contact or grounding contact, and overall dimensions is larger.But limit by switchgear product structure, some product needed adopt rotary structure to realize breaking-closing operating.
Three-station such as the application number adopting rotational structure is 201410233311.2, application publication number is a kind of tri-station isolating switch disclosed in the Chinese patent of CN 103985591 A, its moving contact adopts the form of disconnecting link, comprise the fingertip of two the clamping plate forms arranged in pairs, the radial one end of two fingertips revolutions is hinged on to conduct electricity on fixed contact and with fixed contact and is connected, the other end formed for clamp corresponding isolation grounding contact and with corresponding insulating contact, the isolation ground connection jaws that the functional contact conductions such as grounding contact connect, can rotate to realize closing a floodgate under the effect of operating mechanism, separating brake or ground connection.But, can coordinate with corresponding fixed contact exactly during in order to ensure that moving contact rotates, insulating contact and grounding contact need accurately to be on the swing path of moving contact, therefore above-mentioned rotary structure requires very high to the accuracy of manufacture of three-station and assembly precision, manufacturing cost is high, assembling difficulty, and centering adjustment needs at substantial manpower and time, debugging efficiency is low, maintenance, maintenance inconvenience.
Summary of the invention
The object of this invention is to provide a kind of moving-contact unit being convenient to assembling and setting, meanwhile, present invention also offers a kind of three-station using this moving-contact unit.
The technical scheme that in the present invention, a kind of moving-contact unit adopts is: a kind of moving-contact unit, comprise the fingertip arranged in pairs, the radial two ends of two fingertips revolutions of paired setting are respectively equipped with for conducting electricity the isolation ground connection jaws that connects and for conducting electricity with fixed contact the fixed contact jaws be connected with corresponding functional contact, suspension support is provided with between described isolation ground connection jaws and described fixed contact jaws, two fingertips of paired setting are arranged with the Width swing of described suspension support for fulcrum edge isolation ground connection jaws and fixed contact jaws relative to described suspension support, the two ends that two fingertip revolutions of paired setting are radial are also respectively equipped with for making described elastic cuffs device of isolating ground connection jaws and the contraction of fixed contact jaws, described moving-contact unit also comprises for the hard-wired fingertip support of described suspension support, and described fingertip is erected on described fingertip support by described suspension support.
The side of the two relative sides of fingertip of paired setting is respectively equipped with movable supporting groove, described suspension support is the suspension strut plate of platy structure, suspension strut plate has the side for embedding in corresponding movable supporting groove, and the thickness of described side is less than the groove width of movable supporting groove.
Described fingertip support is the tower structure that surrounding is provided with leg, its two side enclosure wall perpendicular to isolation ground connection jaws and fixed contact jaws Width are provided with supporting bracket jack, described suspension strut plate is that the grafting fixed part arranged by its corresponding end is plugged and is fixed in described supporting bracket jack, the width of described grafting fixed part be less than suspension strut plate overall width and on suspension strut plate forming station stage structure, the step wall that described ledge structure extends along suspension strut plate Width coordinates with corresponding leg block.
Described elastic cuffs device is be connected to the extension spring between paired two fingertips arranged.
Described fixed contact jaws and isolation ground connection jaws are used for conducting electricity with corresponding fixed contact and functional contact the mating surface be connected and are sphere.
The technical scheme that in the present invention, three-station adopts is: three-station, comprise grounding contact, insulating contact and moving-contact unit, described moving-contact unit comprises the fingertip arranged in pairs, the radial two ends of two fingertips revolutions of paired setting are respectively equipped with for conducting electricity the isolation ground connection jaws that connects and for conducting electricity with fixed contact the fixed contact jaws be connected with corresponding contact, suspension support is provided with between described isolation ground connection jaws and described fixed contact jaws, two fingertips of paired setting are arranged with the Width swing of described suspension support for fulcrum edge isolation ground connection jaws and fixed contact jaws relative to described suspension support, the two ends that two fingertip revolutions of paired setting are radial are also respectively equipped with for making described elastic cuffs device of isolating ground connection jaws and the contraction of fixed contact jaws, described moving-contact unit also comprises for the hard-wired fingertip support of described suspension support, and described fingertip is erected on described fingertip support by described suspension support.
The side of the two relative sides of fingertip of paired setting is respectively equipped with movable supporting groove, described suspension support is the suspension strut plate of platy structure, suspension strut plate has the side for embedding in corresponding movable supporting groove, and the thickness of described side is less than the groove width of movable supporting groove.
Described fingertip support is the tower structure that surrounding is provided with leg, its two side enclosure wall perpendicular to isolation ground connection jaws and fixed contact jaws Width are provided with supporting bracket jack, described suspension strut plate is plugged by the grafting fixed part that its corresponding end is arranged and is fixed in described supporting bracket jack, the width of described grafting fixed part be less than suspension strut plate overall width and on suspension strut plate forming station stage structure, the step wall that described ledge structure extends along suspension strut plate Width coordinates with corresponding leg block.
Described elastic cuffs device is be connected to the extension spring between paired two fingertips arranged.
Described fixed contact jaws and isolation ground connection jaws are used for conducting electricity with corresponding fixed contact and functional contact the mating surface be connected and are sphere.
The present invention adopts technique scheme, by arranging suspension support and elastic cuffs device, fingertip can be erected on described fingertip support by described suspension support and to realize divide-shut brake with the revolution of fingertip support, the functions such as ground connection, and the two ends of the two fingertip revolution radial directions arranged in pairs can with described suspension support for the Width of fulcrum along isolation ground connection jaws and fixed contact jaws swings, thus enable fixed contact jaws and isolation ground connection jaws according to centering need to swing certain angle with respectively with fixed contact and corresponding functional contact adaptation, the centering requirement of automatic adaptation fixed contact and functional contact, and elastic cuffs device can ensure contact, meet the requirement of contact resistance and temperature rise, be convenient to assembling and setting, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of three-station in the present invention, is also the using state schematic diagram of a kind of moving-contact unit in the present invention simultaneously;
Fig. 2 is the K direction view of the mounting structure of moving-contact unit in Fig. 1;
Fig. 3 is the end view of moving-contact unit in Fig. 2;
Fig. 4 is the vertical view of moving-contact unit in Fig. 2;
Fig. 5 is the stereogram of moving-contact unit in Fig. 2;
Fig. 6 is the front view of wherein a pair fingertip in Fig. 2;
Fig. 7 is the front view of suspension strut plate;
Fig. 8 is the left view of Fig. 7.
The name that in figure, each Reference numeral is corresponding is called: 1-cylindrical shell, upper fixed insulation of 2-, 3-insulating contact, fixed insulation under 4-, 5-fixed contact, 6-grounding contact, 7-moving-contact unit, 8-moving contact insulator, 9-rotating shaft, 10-connecting lever, 11-fingertip unit, 12-fingertip, 13-movable supporting groove, 14-fingertip support, 15-suspension strut plate, 16-grafting fixed part, 17-supporting bracket jack, 18-reed, 19-extension spring, 20-isolates ground connection jaws, 21-fixed contact jaws.
Embodiment
An embodiment of three-station of the present invention is as shown in Fig. 1 ~ Fig. 8, a kind of three-station for 35kV switchgear, comprise cylindrical shell 1, for install insulating contact 3 upper fixed insulation 2, for installing lower fixed insulation 4 of fixed contact 5, grounding contact 6 and conducting electricity with fixed contact 5 moving-contact unit 7 be connected.
Moving-contact unit 7 comprises the unsettled fingertip unit 11 in two ends and the fingertip support 14 for fixing fingertip unit 11.Fingertip unit 11 comprise along perpendicular to moving-contact unit 7 gyroaxis to four pairs of fingertips 12 being arranged side by side of direction, the each pair of fingertip 12 turns round radial direction along moving-contact unit 7 and staggers successively and form stairstepping arrangement, simultaneously each pair of fingertip 12 turns round radial two ends and is respectively equipped with for conduct electricity the isolation ground connection jaws 20 that is connected and for conducting electricity with fixed contact 5 the fixed contact jaws 21 be connected with the functional contact such as insulating contact 3 and grounding contact 6, fixed contact jaws 21 with isolate ground connection jaws 20 and be sphere for conducting electricity with corresponding fixed contact 5 and functional contact the mating surface be connected.The side of the relative side of two fingertips 12 of paired setting is respectively equipped with movable supporting groove 13, the side of the corresponding suspension strut plate 15 Width both sides arranged is embedded in corresponding movable supporting groove 13, the thickness of suspension strut plate 15 side is less than the groove width of movable supporting groove 13, and two fingertips 12 arranged in pairs can be swung with the Width that described suspension strut plate 15 is fulcrum edge isolation ground connection jaws 20 and fixed contact jaws 21 relative to described suspension strut plate 15.Fingertip support 14 is provided with the tower structure of leg for surrounding, its two side enclosure wall perpendicular to isolation ground connection jaws 20 and fixed contact jaws 21 Width are provided with supporting bracket jack 17, described suspension strut plate 15 is that the grafting fixed part 16 arranged by its corresponding end is plugged and is fixed in described supporting bracket jack 17, the width of described grafting fixed part 16 be less than suspension strut plate 15 overall width and on suspension strut plate 15 forming station stage structure, the leg block that the step wall that ledge structure extends along suspension strut plate 15 Width is corresponding with on fingertip support 14 coordinates.Suspension strut plate 15 being also fixed with the reed 18 of the leg for holding out against fingertip support 14, ensureing fixedly securing of suspension strut plate 15.In order to carry out spacing to four pairs of fingertips 12 along gyratory directions, it is spacing that fingertip support 14 realizes block perpendicular to two side enclosure wall and the corresponding sidewall close fit of four pairs of fingertips 12 of isolation ground connection jaws 20 and fixed contact jaws 21 Width.
The each pair of fingertip 12 turns round radial two ends and is also respectively equipped with extension spring 19 for making described isolation ground connection jaws 20 and fixed contact jaws 21 shrink to produce contact, forms elastic cuffs device.During assembling, each pair of fingertip 12 can rely on stay cord spring and suspension strut plate 15 to be combined into one, easy to assembly; And fixed contact 5 is folded in fixed contact jaws 21 and keeps being connected with the conduction of fingertip 12 and rely on the extension spring 19 of corresponding end and fingertip 12 to keep in touch pressure; Insulating contact 3 and grounding contact 6 are the tabular that corresponding isolation ground connection jaws 20 is arranged, and the side corresponding with moving-contact unit 7 is wedge shape, are convenient to coordinate with isolation ground connection jaws 20.The each pair of fingertip 12 adopts to turn round along moving-contact unit 7 and radial staggering successively forms the mode of stairstepping arrangement, and in moving-contact unit 7 engagement process, contact can smooth change, and transmission stability is good.
Moving-contact unit 7 is fixed on transmission mechanism by the respective side leg of fingertip support 14, transmission mechanism comprise be fixedly connected with for moving-contact unit 7 moving contact insulator 8, rotate the rotating shaft 9 and the spin-ended connecting lever 10 be assemblied in rotating shaft 9 that are assemblied on cylindrical shell 1, connecting lever 10 is in transmission connection with corresponding motor drive mechanism and under the driving of motor drive mechanism, drives rotating shaft 9 to rotate, and then realizes the crankmotion of moving-contact unit 7.
During use, moving-contact unit 7 is crankmotion under motor drive mechanism drives, and realizes divide-shut brake action and landing operation.As Fig. 1, moving-contact unit 7 is in open position, when motor drive mechanism does counterclockwise movement, fingertip 12 is rotated counterclockwise centered by fixed contact 5, and fingertip 12 is stuck on insulating contact 3, and extension spring 19 is isolated contact 3 and struts, play pretightning force effect, now switch is in closing position; On the contrary, motor drive mechanism clockwise movement, then switch returns open position; If moving-contact unit 7 proceeds clockwise movement, then fingertip 12 continues to turn clockwise, and fingertip 12 is stuck on grounding contact 6, now contact of earth, moving-contact unit 7 carries out counterclockwise movement more subsequently, ground connection separating brake, and moving contact gets back to again position as shown in Figure 1.Swing because two fingertips 12 arranged in pairs turn round the Width that radial two ends can be fulcrum edge isolation ground connection jaws 20 and fixed contact jaws 21 with suspension strut plate 15, therefore fixed contact jaws 21 and isolation ground connection jaws 20 can need to swing certain angle with adaptive with fixed contact 5 and corresponding functional contact respectively according to centering, the centering requirement of automatic adaptation fixed contact 5 and functional contact, solve the combined floodgate contact problems because insulating contact 3 or the deviation between grounding contact 6 and fixed contact 5 cause, and elastic cuffs device can ensure contact, meet the requirement of contact resistance and temperature rise, be convenient to assembling and setting, greatly can improve debugging efficiency, easy to use.
Moving-contact unit 7 in the present invention in an a kind of embodiment of moving-contact unit and above-described embodiment, concrete structure repeats no more herein.
In the above-described embodiments, fingertip 12 is provided with movable supporting groove 13, and what suspension support adopted is have the suspension strut plate 15 for embedding in movable supporting groove 13, and suspension strut plate 15 plugs in the supporting bracket jack 17 being fixed on and fingertip support 14 is arranged.In other embodiments of the invention, suspension support also can replace with other forms, such as, on the end face of the Width both sides of suspension strut plate 15, arrange support slot, and arrange fin on fingertip 12; For another example arrange pin in suspension strut plate 15 Width both sides, fingertip 12 arranges pin-and-hole, the swing that can realize fingertip 12 is equally arranged.And suspension support also can otherwise be fixed with fingertip support 14, such as, fixed by threaded fastener or be welded and fixed.In addition, what above-described embodiment Elastic closing device adopted is extension spring 19, in other embodiments, elastic cuffs device also can replace with other forms, such as clamping the elastic clip of two paired fingertips 12, shrink as long as can produce described isolation ground connection jaws 20 and fixed contact jaws 21 to ensure contact.
Claims (10)
1. a moving-contact unit, comprise the fingertip arranged in pairs, it is characterized in that: the radial two ends of the two fingertips revolutions arranged in pairs are respectively equipped with for conducting electricity the isolation ground connection jaws that connects and for conducting electricity with fixed contact the fixed contact jaws be connected with corresponding functional contact, suspension support is provided with between described isolation ground connection jaws and described fixed contact jaws, two fingertips of paired setting are arranged with the Width swing of described suspension support for fulcrum edge isolation ground connection jaws and fixed contact jaws relative to described suspension support, the two ends that two fingertip revolutions of paired setting are radial are also respectively equipped with for making described elastic cuffs device of isolating ground connection jaws and the contraction of fixed contact jaws, described moving-contact unit also comprises for the hard-wired fingertip support of described suspension support, and described fingertip is erected on described fingertip support by described suspension support.
2. a kind of moving-contact unit according to claim 1, it is characterized in that: the side of the two relative sides of fingertip arranged in pairs is respectively equipped with movable supporting groove, described suspension support is the suspension strut plate of platy structure, suspension strut plate has the side for embedding in corresponding movable supporting groove, and the thickness of described side is less than the groove width of movable supporting groove.
3. a kind of moving-contact unit according to claim 2, it is characterized in that: described fingertip support is the tower structure that surrounding is provided with leg, its two side enclosure wall perpendicular to isolation ground connection jaws and fixed contact jaws Width are provided with supporting bracket jack, described suspension strut plate is that the grafting fixed part arranged by its corresponding end is plugged and is fixed in described supporting bracket jack, the width of described grafting fixed part be less than suspension strut plate overall width and on suspension strut plate forming station stage structure, the step wall that described ledge structure extends along suspension strut plate Width coordinates with corresponding leg block.
4. a kind of moving-contact unit according to any one in claim 1-3, is characterized in that: described elastic cuffs device is be connected to the extension spring between paired two fingertips arranged.
5. a kind of moving-contact unit according to any one in claim 1-3, is characterized in that: described fixed contact jaws and isolation ground connection jaws are used for conducting electricity with corresponding fixed contact and functional contact the mating surface be connected and are sphere.
6. three-station, comprise grounding contact, insulating contact and moving-contact unit, described moving-contact unit comprises the fingertip arranged in pairs, it is characterized in that: the radial two ends of the two fingertips revolutions arranged in pairs are respectively equipped with for conducting electricity the isolation ground connection jaws that connects and for conducting electricity with fixed contact the fixed contact jaws be connected with corresponding contact, suspension support is provided with between described isolation ground connection jaws and described fixed contact jaws, two fingertips of paired setting are arranged with the Width swing of described suspension support for fulcrum edge isolation ground connection jaws and fixed contact jaws relative to described suspension support, the two ends that two fingertip revolutions of paired setting are radial are also respectively equipped with for making described elastic cuffs device of isolating ground connection jaws and the contraction of fixed contact jaws, described moving-contact unit also comprises for the hard-wired fingertip support of described suspension support, and described fingertip is erected on described fingertip support by described suspension support.
7. three-station according to claim 6, it is characterized in that: the side of the two relative sides of fingertip arranged in pairs is respectively equipped with movable supporting groove, described suspension support is the suspension strut plate of platy structure, suspension strut plate has the side for embedding in corresponding movable supporting groove, and the thickness of described side is less than the groove width of movable supporting groove.
8. three-station according to claim 7, it is characterized in that: described fingertip support is the tower structure that surrounding is provided with leg, its two side enclosure wall perpendicular to isolation ground connection jaws and fixed contact jaws Width are provided with supporting bracket jack, described suspension strut plate is plugged by the grafting fixed part that its corresponding end is arranged and is fixed in described supporting bracket jack, the width of described grafting fixed part be less than suspension strut plate overall width and on suspension strut plate forming station stage structure, the step wall that described ledge structure extends along suspension strut plate Width coordinates with corresponding leg block.
9. the three-station according to any one in claim 6-8, is characterized in that: described elastic cuffs device is be connected to the extension spring between paired two fingertips arranged.
10. the three-station according to any one in claim 6-8, is characterized in that: described fixed contact jaws and isolation ground connection jaws are used for conducting electricity with corresponding fixed contact and functional contact the mating surface be connected and are sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656565.5A CN104810186B (en) | 2014-11-18 | 2014-11-18 | A kind of moving-contact unit and the three-station using the moving-contact unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656565.5A CN104810186B (en) | 2014-11-18 | 2014-11-18 | A kind of moving-contact unit and the three-station using the moving-contact unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104810186A true CN104810186A (en) | 2015-07-29 |
| CN104810186B CN104810186B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410656565.5A Active CN104810186B (en) | 2014-11-18 | 2014-11-18 | A kind of moving-contact unit and the three-station using the moving-contact unit |
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| Country | Link |
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| CN (1) | CN104810186B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869942A (en) * | 2016-04-01 | 2016-08-17 | 广州白云电器设备股份有限公司 | Three-position isolation switch for switch cabinet |
| CN109148204A (en) * | 2017-06-27 | 2019-01-04 | 河南平芝高压开关有限公司 | A kind of gas-insulating and fully-enclosed combined electrical apparatus and its three-station isolating grounding switch |
| CN110047684A (en) * | 2019-04-26 | 2019-07-23 | 国电大渡河检修安装有限公司 | A kind of rectangular bus bar grounding switch |
| CN112053910A (en) * | 2020-08-21 | 2020-12-08 | 华翔翔能科技股份有限公司 | Moulded case circuit breaker with improved contact structure |
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| CN201142518Y (en) * | 2007-12-29 | 2008-10-29 | 山东泰开高压开关有限公司 | Flat rotating electric connection of closed type combined electrical apparatus switch |
| CN201514882U (en) * | 2009-08-14 | 2010-06-23 | 中国西电电气股份有限公司 | Large current knife type high-pressure switch |
| CN102723672A (en) * | 2012-06-06 | 2012-10-10 | 平高集团有限公司 | Three-station switch cabinet and bus connecting structure thereof |
| CN103959417A (en) * | 2011-12-02 | 2014-07-30 | 西门子公司 | Switching device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2349712Y (en) * | 1997-12-10 | 1999-11-17 | 王恩林 | Automatic resetting wobbler contact |
| CN201142518Y (en) * | 2007-12-29 | 2008-10-29 | 山东泰开高压开关有限公司 | Flat rotating electric connection of closed type combined electrical apparatus switch |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869942A (en) * | 2016-04-01 | 2016-08-17 | 广州白云电器设备股份有限公司 | Three-position isolation switch for switch cabinet |
| CN109148204A (en) * | 2017-06-27 | 2019-01-04 | 河南平芝高压开关有限公司 | A kind of gas-insulating and fully-enclosed combined electrical apparatus and its three-station isolating grounding switch |
| CN109148204B (en) * | 2017-06-27 | 2022-06-21 | 河南平芝高压开关有限公司 | Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof |
| CN110047684A (en) * | 2019-04-26 | 2019-07-23 | 国电大渡河检修安装有限公司 | A kind of rectangular bus bar grounding switch |
| CN112053910A (en) * | 2020-08-21 | 2020-12-08 | 华翔翔能科技股份有限公司 | Moulded case circuit breaker with improved contact structure |
| CN112053910B (en) * | 2020-08-21 | 2023-03-21 | 华翔翔能科技股份有限公司 | Moulded case circuit breaker with improved contact structure |
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| CN104810186B (en) | 2017-09-29 |
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