CN104900428A - Large-current electric grounding switch - Google Patents
Large-current electric grounding switch Download PDFInfo
- Publication number
- CN104900428A CN104900428A CN201510283437.5A CN201510283437A CN104900428A CN 104900428 A CN104900428 A CN 104900428A CN 201510283437 A CN201510283437 A CN 201510283437A CN 104900428 A CN104900428 A CN 104900428A
- Authority
- CN
- China
- Prior art keywords
- fixed
- fingertip
- current electric
- contact
- big current
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
-
- 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
- H01H31/003—Earthing switches
-
- 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
- H01H31/023—Base and stationary contacts mounted thereon
-
- 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
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a high-current electric grounding switch. The high-current electric grounding switch comprises an U-shaped frame of an integrated structure; the frame body is composed of two side plates and a middle baffle; the side plates are L-shaped and are arranged at two ends of the middle baffle respectively; screw holes are formed in the middle baffle; first through holes and second through holes are formed in the side plates. The grounding switch of the invention can be operated manually and electrically. According to the high-current electric grounding switch of the invention, gears with shaft sleeves are adopted, and therefore, convenient use and safe operation can be realized; when the grounding switch is switched on, switches are closed instantly and drive the shaft sleeves at the centers of the gears, while, do not drive an operating handle, and therefore, operational safety can be realized, and the service life of equipment can be prolonged; tulip contacts are adopted, moving contacts and fixed contacts are matched with each other, and surrounding pressure is consistent, and large current is distributed uniformly, and local overheating can be avoided, and operation can be benefitted, and electrical and mechanical properties can be greatly improved, and therefore, the passing of short-circuit high current can be ensured, and the reliability of the switch can be greatly improved.
Description
Technical field
The present invention relates to a kind of big current earthed switch, particularly for more than 50kA big current electric ground switch.
Background technology
Earthed switch is the mechanical switch for circuit ground part, belongs to isolating switch classification, and it can bear the electric current under non-normal condition within a certain period of time.And existing earthed switch closing operation carrys out transmission by action bars driven gear, during combined floodgate, moving contact and fixed contact pass through spring return function, in order to the synchronism of earthed switch and the location of spring, this frame needs a lot of spring to strangle plate, and left and right has respectively had more one piece of side plate, consume a large amount of unnecessary materials; And these springs are strangled plate, side plate and are bolted each other, powerful impact can cause fixing these bolt loosenesses, as long as bolt loosens, this switch just must depot repair; In addition, traditional earthed switch structure of contact terminal is pressed on the copper fixed contact of monolithic by two copper coins by spring pressure, and this structural integrity is poor, and electric property is unreliable, and operating physical force is large, and combined floodgate short circuit current is easily open.Particularly by big current time contact easily by scorification, bring hidden danger to operation power.。In sum, the frame manufacturing cost of existing earthed switch is high, complex structure, and the loosely organized performance of switch that easily causes is stable not, there is potential safety hazard even.
Summary of the invention
The present invention, in order to overcome the deficiencies in the prior art, provides that a kind of volume is little, structure is simple, the earthed switch of with low cost, good stability.
Big current electric ground switch comprises U-shaped support body, insulator, moving contact, fixed contact, spring, rotating shaft, nipple, movable feeler lever, U-shaped curved, screw rod, earthed switch bevel gear mechanism, wherein bevel gear mechanism comprises pinion stand, equipment gear, steel bushing, snap ring, axle sleeve, master gear, its bottom bracket axle comprises groove, projection, and wherein fixed contact comprises button contact base, conducting ring, nylon cushion pad, fingertip location notch, stage clip, fingertip bar; U-shaped support body is bolted on pedestal, insulator is fixed on U-shaped support body, fixed contact is fixing on the insulator, spring is fixed in U-shaped support body and rotating shaft, rotating shaft is fixed on U-shaped support body, moving contact is fixed in rotating shaft, and three movable feeler levers are by being equipped with U-shaped curved nipple and screw rod fixes, and movable feeler lever end is fixed in rotating shaft; Pinion stand is fixed on pedestal, steel bushing and equipment gear interference fits, and equipment gear engages with master gear, snap ring clamp in groove, axle sleeve and pinion stand interference fit; Button contact base endoporus relies on fingertip location notch evenly to locate some fingertip bars.Stage clip is provided with between fingertip bar and button contact base inwall, fingertip bar tail end is made to be pressed on the afflux groove of conducting ring, and be fixed bottom conducting ring and button contact base with screw, nylon cushion pad and disposal ingot position groove endoporus interference fit, fingertip bar afterbody contacts with radial direction with conducting ring afflux groove.
Be provided with steel bushing in described equipment gear, in steel bushing, have hexagonal through hole.
Described moving contact, fixed contact are all with the transition of R angle.
Described fixed contact contact site is plum blossom-shaped.
The fingertip bar of the cavity circle distribution in described fixed contact is more than ten, and every root fingertip bar has the stage clip of independent also formed objects and performance to apply pressure to it, and the two ends of fingertip bar are provided with bayonet socket, and two of stage clip withstands on the bayonet socket at the two ends of fingertip bar respectively.
Described three groups of spring one words are uniformly distributed in left, center, right three place of support body.
Described fingertip location notch, when divide-shut brake is initial, can drive fingertip bar to rotate 0 °-20 ° together.
Three described movable feeler levers are by being equipped with U-shaped curved nipple and screw rod fixes.
The present invention, adopts the gear of axle sleeve, easy to use, handling safety; When earthed switch closes a floodgate, switching moments closes, first can the axle sleeve at driven gear center, and does not drive operating grip, not only simple operation, effectively can avoid the generation of security incident, also extend the useful life of equipment; In addition, the fixed contact of big current grounding switch static contact device adopts the plum blossom fingertip type structure be made up of some fingertip bars, when the cylindrical moving contact corresponded supports the use, dynamic and static contacts mates all-round pressure is consistent, big current is uniformly distributed can avoid local overheating phenomenon, whole contact assembly also swingable 15 ° of angles when divide-shut brake is initial, be conducive to operation, electric and mechanical performance improves greatly, therefore can ensure passing through of Short-Circuit High Current, greatly improve the reliability of switch.And this product can meet the requirement of 50KA/3s dynamic and thermal stability and peak value 130KA requirement.
Accompanying drawing explanation
Fig. 1 is a kind of structure chart of big current electric ground switch;
Fig. 2 is the structure chart of bevel gear mechanism;
Fig. 3 is the structure chart of Mume flower contact;
In figure, U-shaped support body 1, insulator 2, moving contact 3, fixed contact 4, spring 5, rotating shaft 6, nipple 7, movable feeler lever 20, U-shaped curved 21, screw rod 22, earthed switch bevel gear mechanism 14; Pinion stand 8, equipment gear 9, steel bushing 10, snap ring 11, axle sleeve 12, master gear 13; Groove 121, projection 122, fixed contact 4, comprise button contact base 14, conducting ring 15, nylon cushion pad 16, fingertip location notch 17, stage clip 18, fingertip bar 19.
Embodiment
As shown in Figure 1, 2, big current electric ground switch comprises U-shaped support body 1, insulator 2, moving contact 3, fixed contact 4, spring 5, rotating shaft 6, nipple 7, movable feeler lever 20, U-shaped curved 21, screw rod 22, earthed switch bevel gear mechanism 14, wherein bevel gear mechanism comprises pinion stand 8, equipment gear 9, steel bushing 10, snap ring 11, axle sleeve 12, master gear 13, and its bottom bracket axle 12 comprises groove 121, projection 122; Wherein fixed contact 4 comprises button contact base 14, conducting ring 15, nylon cushion pad 16, fingertip location notch 17, stage clip 18, fingertip bar 19; U-shaped support body 1 is bolted on pedestal, insulator 2 is fixed on U-shaped support body 1, fixed contact 4 is fixed on insulator 2, spring 5 is fixed in U-shaped support body 1 and rotating shaft 6, rotating shaft 6 is fixed on U-shaped support body 1, moving contact 3 is fixed in rotating shaft 6, and three movable feeler levers 20 are by being equipped with the U-shaped nipple of curved 21 7 and screw rod 22 fixes, and movable feeler lever 20 end is fixed in rotating shaft 6; Pinion stand 8 is fixed on pedestal, steel bushing 10 and equipment gear 9 interference fits, and equipment gear 9 engages with master gear 13, snap ring 11 clamp in groove 121, axle sleeve 12 and pinion stand 8 interference fit.Button contact base 14 endoporus relies on fingertip location notch 17 evenly some the fingertip bars 19 in location.Stage clip 18 is provided with between fingertip bar 19 and button contact base 14 inwall, fingertip bar 19 tail end is made to be pressed on the afflux groove of conducting ring 15, and be fixed bottom conducting ring 15 and button contact base 14 with screw, nylon cushion pad 16 and disposal ingot position groove 17 endoporus interference fit, fingertip bar 19 afterbody contacts with radial direction with conducting ring 15 afflux groove.
As shown in Figure 2, in equipment gear 9, be provided with steel bushing 10, in steel bushing 10, have hexagonal through hole.
As shown in Figure 3, moving contact 3, fixed contact 4, all with the transition of R angle, make alternate clear distance 128mm also can meet 95kV lightning impulse test.
As shown in Figure 3, fixed contact 4 contact site is plum blossom-shaped, electric current by time each fingertip bar 19 between can produce suction and increase contact.
As shown in Figure 3, the fingertip bar 19 of the cavity circle distribution in fixed contact 4 is more than ten, every root fingertip bar 19 has the stage clip 18 of independent also formed objects and performance to apply pressure to it, the two ends of fingertip bar 19 are provided with bayonet socket, two of stage clip 18 withstands on the bayonet socket at the two ends of fingertip bar 19 respectively, and situation about reducing if there is several contacts area affects final test nothing.
As shown in Figure 1, three groups of spring one words are uniformly distributed in left, center, right three place of support body, while ensureing closing speed, stablize the synchroswitching between three-phase.
As shown in Figure 1, fingertip location notch 17, when divide-shut brake is initial, can drive fingertip bar 19 to rotate 0 °-20 ° together.Be conducive to operation, electric and mechanical performance improves greatly, therefore can ensure passing through of Short-Circuit High Current, greatly improve the reliability of switch.
As shown in Figure 1, three movable feeler levers are by being equipped with U-shaped curved nipple and screw rod fixes, and movable feeler lever is aluminium, not only weight reduction, improve pass sum velocity, also increase can increase electric conductivity while improve the synchronous and mechanical strength of combined floodgate between three.
Claims (8)
1. a big current electric ground switch, it is characterized in that comprising U-shaped support body (1), insulator (2), moving contact (3), fixed contact (4), spring (5), rotating shaft (6), nipple (7), movable feeler lever (20), U-shaped curved (21), screw rod (22), bevel gear mechanism (14), wherein bevel gear mechanism (14) comprises pinion stand (8), equipment gear (9), steel bushing (10), snap ring (11), axle sleeve (12), master gear (13), its bottom bracket axle (12) comprises groove (121), projection (122), fixed contact (4) comprises button contact base (14), conducting ring (15), nylon cushion pad (16), fingertip location notch (17), stage clip (18), fingertip bar (19), U-shaped support body (1) is bolted on pedestal, insulator (2) is fixed on U-shaped support body (1), fixed contact (4) is fixed on insulator (2), spring (5) is fixed in U-shaped support body (1) and rotating shaft (6), rotating shaft (6) is fixed on U-shaped support body (1), moving contact (3) is fixed on movable feeler lever (20), three movable feeler levers (20) are fixed by the nipple (7) and screw rod (22) being equipped with U-shaped curved (21), and movable feeler lever (20) end is fixed in rotating shaft (6), pinion stand (8) is fixed on pedestal, steel bushing (10) and equipment gear (9) interference fits, and equipment gear (9) engages with master gear (13), snap ring (11) clamp in groove (121), axle sleeve (12) and pinion stand (8) interference fit, button contact base (14) endoporus relies on fingertip location notch (17) evenly to locate the fingertip bar (19) of respective numbers,
Stage clip (18) is provided with between fingertip bar (19) and button contact base (14) inwall, fingertip bar (19) tail end is made to be pressed on the afflux groove of conducting ring (15), and with screw, conducting ring (15) and button contact base (14) bottom are fixed, nylon cushion pad (16) and disposal ingot position groove (17) endoporus interference fit, fingertip bar (19) afterbody contacts with radial direction with conducting ring (15) afflux groove.
2. a kind of big current electric ground switch according to claim 1, it is characterized in that being provided with steel bushing (10) in described equipment gear (9), steel bushing has hexagonal through hole in (10).
3. a kind of big current electric ground switch according to claim 1, is characterized in that described moving contact (3), fixed contact (4) are all with the transition of R angle.
4. a kind of big current electric ground switch according to claim 1, is characterized in that described fixed contact (4) contact site is plum blossom-shaped.
5. a kind of big current electric ground switch according to claim 1, the fingertip bar (19) that it is characterized in that the cavity circle distribution in described fixed contact (4) is more than ten, every root fingertip bar (19) has the stage clip (18) of independent also formed objects and performance to apply pressure to it, the two ends of fingertip bar (19) are provided with bayonet socket, and two of stage clip (18) withstands on the bayonet socket at the two ends of fingertip bar (19) respectively.
6. a kind of big current electric ground switch according to claim 1, is characterized in that described three groups of springs (5) word is uniformly distributed in left, center, right three place of support body (1).
7. a kind of big current electric ground switch according to claim 1, is characterized in that described fingertip location notch (17) is when divide-shut brake is initial, fingertip bar (19) can be driven to rotate 0 °-20 ° together.
8. a kind of big current electric ground switch according to claim 1, is characterized in that three described movable feeler levers (20) are fixed by the nipple (7) and screw rod (22) being equipped with U-shaped curved (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510283437.5A CN104900428A (en) | 2015-05-29 | 2015-05-29 | Large-current electric grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510283437.5A CN104900428A (en) | 2015-05-29 | 2015-05-29 | Large-current electric grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104900428A true CN104900428A (en) | 2015-09-09 |
Family
ID=54033035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510283437.5A Pending CN104900428A (en) | 2015-05-29 | 2015-05-29 | Large-current electric grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104900428A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448576A (en) * | 2015-12-14 | 2016-03-30 | 国家电网公司 | Disconnecting switch used for large current ice melting of high-voltage power transmission line |
| CN107611633A (en) * | 2017-10-09 | 2018-01-19 | 宁波甬城配电网建设有限公司 | A kind of new molded-case switch Rapid grounding device |
| CN111279448A (en) * | 2018-07-27 | 2020-06-12 | Abb瑞士股份有限公司 | Switch assembly for a detection unit of a switching device or a control device, and related compartment and switching device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4263487A (en) * | 1980-03-31 | 1981-04-21 | Electrical Equipment, Inc. | Air switch |
| CN200944352Y (en) * | 2006-08-24 | 2007-09-05 | 周新辉 | High-current grounding switch static contact device |
| CN202616071U (en) * | 2012-06-11 | 2012-12-19 | 江山市电器技术开发有限公司 | Ground switch bevel gear mechanism |
| CN202650882U (en) * | 2012-06-11 | 2013-01-02 | 江山市电器技术开发有限公司 | A rack of grounding switches |
| CN204632601U (en) * | 2015-05-29 | 2015-09-09 | 江山市电器技术开发有限公司 | Big current electric ground switch |
-
2015
- 2015-05-29 CN CN201510283437.5A patent/CN104900428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4263487A (en) * | 1980-03-31 | 1981-04-21 | Electrical Equipment, Inc. | Air switch |
| CN200944352Y (en) * | 2006-08-24 | 2007-09-05 | 周新辉 | High-current grounding switch static contact device |
| CN202616071U (en) * | 2012-06-11 | 2012-12-19 | 江山市电器技术开发有限公司 | Ground switch bevel gear mechanism |
| CN202650882U (en) * | 2012-06-11 | 2013-01-02 | 江山市电器技术开发有限公司 | A rack of grounding switches |
| CN204632601U (en) * | 2015-05-29 | 2015-09-09 | 江山市电器技术开发有限公司 | Big current electric ground switch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448576A (en) * | 2015-12-14 | 2016-03-30 | 国家电网公司 | Disconnecting switch used for large current ice melting of high-voltage power transmission line |
| CN107611633A (en) * | 2017-10-09 | 2018-01-19 | 宁波甬城配电网建设有限公司 | A kind of new molded-case switch Rapid grounding device |
| CN111279448A (en) * | 2018-07-27 | 2020-06-12 | Abb瑞士股份有限公司 | Switch assembly for a detection unit of a switching device or a control device, and related compartment and switching device |
| CN111279448B (en) * | 2018-07-27 | 2022-06-24 | Abb瑞士股份有限公司 | Switch assembly for a detection unit of a switching device or a control device, and related compartment and switching device |
| US11776775B2 (en) | 2018-07-27 | 2023-10-03 | Abb Schweiz Ag | Switch assembly for detection unit of switchgear or controlgear and associated compartment and switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |