CN204632601U - Big current electric ground switch - Google Patents
Big current electric ground switch Download PDFInfo
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- CN204632601U CN204632601U CN201520357502.XU CN201520357502U CN204632601U CN 204632601 U CN204632601 U CN 204632601U CN 201520357502 U CN201520357502 U CN 201520357502U CN 204632601 U CN204632601 U CN 204632601U
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- fixed
- fingertip
- big current
- support body
- current electric
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Abstract
The utility model discloses a kind of big current electric ground switch, comprise the U-shaped support body of integrative-structure, support body is by biside plate and middle-gradely form, biside plate is L shape, be located at middle-grade two ends respectively, be middle-gradely provided with screw, side plate is provided with the first through hole and the second through hole; The utility model earthed switch can hand/electric operating; The utility model patent adopts the gear of band axle sleeve, easy to use, handling safety, and when earthed switch closes a floodgate, switching moments closes, the axle sleeve at driven gear center, and does not drive operating grip, handling safety, also extends the useful life of equipment; The utility model adopts Mume flower contact, and dynamic and static contacts mates all-round pressure is consistent, and big current is uniformly distributed can avoid local overheating phenomenon, 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.
Description
Technical field
The utility model 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 utility model, 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 utility model, 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 |
|---|---|---|---|
| CN201520357502.XU CN204632601U (en) | 2015-05-29 | 2015-05-29 | Big current electric ground switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357502.XU CN204632601U (en) | 2015-05-29 | 2015-05-29 | Big current electric ground switch |
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| Publication Number | Publication Date |
|---|---|
| CN204632601U true CN204632601U (en) | 2015-09-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520357502.XU Active CN204632601U (en) | 2015-05-29 | 2015-05-29 | Big current electric ground switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204632601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900428A (en) * | 2015-05-29 | 2015-09-09 | 江山市电器技术开发有限公司 | Large-current electric grounding switch |
| US10693284B2 (en) * | 2017-08-09 | 2020-06-23 | Seth Benson | Grounding switch for use in metal-clad switchgear |
-
2015
- 2015-05-29 CN CN201520357502.XU patent/CN204632601U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900428A (en) * | 2015-05-29 | 2015-09-09 | 江山市电器技术开发有限公司 | Large-current electric grounding switch |
| US10693284B2 (en) * | 2017-08-09 | 2020-06-23 | Seth Benson | Grounding switch for use in metal-clad switchgear |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |