CN202678183U - A three-operating-position isolation grounding switch - Google Patents
A three-operating-position isolation grounding switch Download PDFInfo
- Publication number
- CN202678183U CN202678183U CN 201220219900 CN201220219900U CN202678183U CN 202678183 U CN202678183 U CN 202678183U CN 201220219900 CN201220219900 CN 201220219900 CN 201220219900 U CN201220219900 U CN 201220219900U CN 202678183 U CN202678183 U CN 202678183U
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- contact
- moving contact
- grounding
- movable contact
- switch
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- Expired - Lifetime
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Abstract
The utility model discloses a three-operating-position isolation grounding switch used for a gas insulation metal enclosed composite apparatus. A through hole on a grounding contact is used for being connected with a moving contact through plugging fit. An insulating pull rod which passes through the through hole and which drives the moving contact to motion is drivingly connected with a side of the moving contact, the side being close to the grounding contact. A guiding mechanism disposed on a switch limits movement of the insulating pull rod, the movement being along the axis of a moving contact seat. A sliding block moving along the axis of the moving contact seat is formed by the insulating pull rod and the moving contact. A driving device comprises a transmission shaft and a crank arm. The crank arm and the sliding block form a swinging guide rod sliding block mechanism through rotating and sliding fit or the crank arm and the sliding block can be hinged by a connecting rod so as to form a slider-crank mechanism. The three-operating-position isolation grounding switch using the driving device has accurate guiding contact, low wear, and increase reliability.
Description
Technical field
The utility model relates to a kind of isolation earthing switch, specifically a kind of three station isolation grounding switchs for gas insulation metal seal combined electrical apparatus.
Background technology
Present a kind of three station isolation grounding switchs are to adopt gear ﹠ rack structure to drive, for example application number is 201010590477.1 disclosed a kind of three station isolation grounding switchs of Chinese patent, the motion of its moving contact is to realize by the tooth bar that gear drive and moving contact are connected, in the process of engaged transmission, movable contact block must provide the radially power of relative position of rack-and-pinion of keeping, therefore friction is serious between the position of moving contact upper rack offside and the movable contact block, cause easily moving contact action to have some setbacks even stuck, reliability is low, affects the useful life of switch.In addition, integrality and current electric fields that the tooth bar that is connected in the moving contact outside directly affects moving contact, movable contact block rotary structure distribute, and bring therefore that the moving contact quality is heavy, the housing volume is large and the insulation isolating problem of drive unit and switch.
The utility model content
The purpose of this utility model is to provide three station isolation grounding switchs that a kind of contact guiding is accurate, wearing and tearing are few.
In order to address the above problem, the technical solution adopted in the utility model is: the hole with the moving contact inserting on the described grounding contact is through hole, described moving contact is connected with an insulated tension pole that passes and drive its motion from described through hole in the grounding contact side, described switch is provided with the restriction insulated tension pole along the guiding mechanism of movable contact block axial-movement, described insulated tension pole and moving contact form the slide block along the movable contact block axial-movement, described drive unit comprises power transmission shaft and connecting lever, consists of slider and swing guide-bar mechanism between described connecting lever and the described slide block by rotatably being slidingly matched or consists of slider-crank mechanism by rod hinge connection.
Adopt said structure, the swing of connecting lever is converted into the horizontal movement of insulated tension pole by slider and swing guide-bar mechanism or slider-crank mechanism, the radial load major part that produces in this process can be directed to balance of mechanism and fall, therefore the frictional force of moving contact and movable contact block is very little, compare existing structure and greatly reduce wearing and tearing, guiding mechanism can be kept good steering capability, avoids moving contact action to have some setbacks even stuck, has improved reliability.
Described guiding mechanism is fixed on up and down two guide posts parallel with the movable contact block axis of switch inside by two ends and is connected with insulated tension pole and the wheel frame that includes two directive wheels of scroll-up/down support assemblies on described guide post forms, and has the groove that embeds for directive wheel on the relative position of described two guide posts or has the groove that embeds for guide post at directive wheel.Friction in this structure between guide post and the directive wheel is rolling friction, and frictional force is little, more is conducive to reduce wearing and tearing, makes mechanism action more smooth, also can reduce operating work.
Described switch comprises the Crankarm box that covers at described connecting lever outside, and an end of described guide post is fixed on the Crankarm box inwall, and the other end is fixed on the grounding contact.This structure provides reliable support for guide post.
The inwall of described guide post two ends and Crankarm box and the link position of grounding contact are provided with insulating part, can prevent moving contact when carrying out the ground connection operation, thereby electric current are transmitted to the operating mechanism that drive unit hurts operating personnel or is connected with drive unit.
Position with the movable contact block axis coaxle on the inwall of described Crankarm box is provided with buffer structure.This buffer structure can prevent connecting lever accidental impact Crankarm box, and device security is played good protective action, improves reliability.
Be provided with the fairlead of arranging with the movable contact block axis coaxle in the described movable contact block.Fairlead can further guarantee movable contact cephalomotor level and smooth and keep guiding accurately, more be conducive to reduce friction, increase the service life.
Three station isolation grounding switchs according to claim 1 is characterized in that: described moving contact is provided with dark blind hole near an end of the insulating contact position corresponding with insulating contact annular jack, forms cavity structure.Adopt cavity structure can alleviate the moving contact quality on the one hand, reduce operating work, but economical with materials on the other hand reduces cost, in addition, also can improve Electric Field Distribution on the moving contact.
Described switch has a complete sealed gas chamber, controls separately a phase.This structure is isolated mutually each phase air chamber, can phase-splitting carry out when maintenance, has avoided some unnecessary interlocks to disassemble, and also is convenient to modular packing and transportation.
Description of drawings
Below in conjunction with accompanying drawing an embodiment of the present utility model is made and to further specify.
Fig. 1 is the sectional arrangement drawing of certain three station isolation grounding switch embodiment.
Each Reference numeral title is as follows: Crankarm box 1, housing 2, grounding contact 3, end cap 4, fairlead 5, movable contact block 6, fingertip 7, insulating contact 8, charge valve 9, supporting seat 10, moving contact 11, insulated tension pole 12, insulating part 13, power transmission shaft 14, connecting lever 15, wheel frame 16, buffer structure 17, guide post 18, disc insulator 19.
Embodiment
An embodiment of the present utility model as shown in Figure 1, movable contact block 6, supporting seat 10, disc insulator 19 are fixed in housing 2 bottoms successively; Insulating contact 8, disc insulator 19 are fixed in housing 2 right sides successively; Housing 2 passes on left screw and is connected with Crankarm box 1 and is located at connecting lever 15 outsides, and grounding contact 3 is fixedly connected on the Crankarm box 1 by screw and middle the through hole that insulated tension pole 12 is passed is arranged.Above movable contact block 6, insulating contact 8 and grounding contact 3 threes are arranged horizontally and fingertip 7 is all installed in inside.For making things convenient for installation and maintenance, housing 2 is provided with end cap 4, and has charge valve 9 to be used for inflation/deflation.
Described moving contact 11 is fixedly connected with an insulated tension pole 12 that passes and drive its motion from described through hole in the grounding contact side, described guiding mechanism is fixed on up and down two guide posts parallel with the movable contact block axis 18 of switch inside by two ends and is connected with insulated tension pole 12 and the wheel frame 16 that includes two directive wheels of scroll-up/down support assemblies on described guide post 18 forms, have the groove that embeds for guide post on the described directive wheel, this guiding mechanism restriction insulated tension pole 12 moves along the movable contact block axis guide.Insulated tension pole 12 and moving contact 11 both formation are along the slide block of movable contact block axial-movement, drive unit comprises power transmission shaft 14 and connecting lever 15, have groove on the connecting lever 15, on the wheel frame 16 by be connected rotating roller and rotate and to be slidingly matched with groove on the connecting lever 15 of bearing pin, thereby consist of on the whole slider and swing guide-bar mechanism, the swing of connecting lever is converted to the straight line back and forth movement of insulated tension pole and moving contact.
One end of described guide post 18 is fixed on Crankarm box 1 inwall, and the other end is fixed on the grounding contact 3, and is provided with insulating part 13 with the position that is connected.
Position with the movable contact block axis coaxle on the inwall of described Crankarm box 1 is provided with buffer structure 17, described buffer structure 17 is the cushion pads that are screwed at Crankarm box 1 inwall, open counterbore at wheel frame 16 near an end of cushion pad, avoiding screw cap, can cause connecting lever 15 to move in reasons such as motor abnormalities and play cushioning effect when limit meets accident bump.
Be Optimal performance, be provided with the fairlead 5 of arranging with the movable contact block axis coaxle in the described movable contact block 6.
Moving contact described in the present embodiment 11 becomes dark blind hole near an end of insulating contact 8 Position Design corresponding with insulating contact annular jack, forms cavity structure.
In addition, described switch has a complete sealed gas chamber, controls separately a phase.When three-phase was used, the air chamber at each phase switch place was isolated mutually.
The present embodiment working method: connecting lever 15 is driven by power transmission shaft 14 and turns right L ° from middle position, under the effect of slider and swing guide-bar mechanism, promote successively wheel frame 16, insulated tension pole 12 and moving contact 11, moving contact 11 inserts in the insulating contact 8 along the contact base axial-movement, finish isolating switch and close a floodgate, illustrate such as the dotted line between movable contact block among Fig. 16, the insulating contact 8.
After isolating switch closes a floodgate, if being driven by power transmission shaft 14, connecting lever 15 turns left L °, under the effect of slider and swing guide-bar mechanism, moving contact 11 is insulated pull bar 12 pullings and breaks away from insulating contact 8, enter in the movable contact block 6, moving contact 11 mediates again, finishes the isolating switch separating brake.
In like manner, under the effect of slider and swing guide-bar mechanism, connecting lever 15 is driven by power transmission shaft 14 and turns left L °, can spur moving contact 11 and finish the earthed switch combined floodgate to left movement, turn right again L °, moving contact 11 moves right and breaks away from grounding contact 3, enters in the movable contact block 6, finishes grounding switch tripping.
In other embodiment of the present utility model, connecting lever 15 can also pass through a rod hinge connection with described slide block, thereby consists of slider-crank mechanism.For guide frame, described directive wheel cooperates the mode that can also adopt the guide post fluting with the rolling support of guide post 18; Described wheel frame 16 can also adopt two groups of directive wheel parallel constructions to arrange with Optimal performance, this moment insulated tension pole 12 with being connected that employing is connected or hingedly all can of wheel frame 16, moving contact 11.In addition, can also be in wheel frame 16 left and right sides or wherein a side and the coaxial sleeve that is fixedly installed of movable contact block, employing will wear guidance mode in the sleeve along insulated tension pole 12.Described connecting lever 15 can adopt tube-in-tube structure with being connected also of wheel frame 16, and one of them cooperates with the sleeve slide-and-guide, and another and sleeve are hinged.Described buffer structure 17 also can adopt the forms such as spring damping, air-pressure damping to replace cushion pad.
Claims (8)
1. station isolation grounding switch, comprise: grounding contact, slide-and-guide is assemblied in the moving contact in the movable contact block, drive the drive unit that moving contact moves, it is characterized in that: the hole with the moving contact inserting on the described grounding contact is through hole, described moving contact is connected with an insulated tension pole that passes and drive its motion from described through hole in the grounding contact side, described switch is provided with the restriction insulated tension pole along the guiding mechanism of movable contact block axial-movement, described insulated tension pole and moving contact form the slide block along the movable contact block axial-movement, described drive unit comprises power transmission shaft and connecting lever, consists of slider and swing guide-bar mechanism between described connecting lever and the described slide block by rotatably being slidingly matched or consists of slider-crank mechanism by rod hinge connection.
2. a kind of three station isolation grounding switchs according to claim 1, it is characterized in that: described guiding mechanism is fixed on up and down two guide posts parallel with the movable contact block axis of switch inside by two ends and is connected with insulated tension pole and the wheel frame that includes two directive wheels of scroll-up/down support assemblies on described guide post forms, and has the groove that embeds for directive wheel on the relative position of described two guide posts or has the groove that embeds for guide post at directive wheel.
3. a kind of three station isolation grounding switchs according to claim 2, it is characterized in that: described switch comprises the Crankarm box that covers at described connecting lever outside, and an end of described guide post is fixed on the Crankarm box inwall, and the other end is fixed on the grounding contact.
4. a kind of three station isolation grounding switchs according to claim 3, it is characterized in that: the inwall of described guide post two ends and Crankarm box and the link position of grounding contact are provided with insulating part.
5. a kind of three station isolation grounding switchs according to claim 3, it is characterized in that: the position with the movable contact block axis coaxle on the inwall of described Crankarm box is provided with buffer structure.
6. a kind of three station isolation grounding switchs according to claim 1 is characterized in that: be provided with the fairlead of arranging with the movable contact block axis coaxle in the described movable contact block.
7. a kind of three station isolation grounding switchs according to claim 1 is characterized in that: described moving contact is provided with dark blind hole, the formation cavity structure near an end of the insulating contact position corresponding with insulating contact annular jack.
8. described a kind of three station isolation grounding switchs of any one according to claim 1 ~ 7, it is characterized in that: described switch has a complete sealed gas chamber, controls separately a phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220219900 CN202678183U (en) | 2012-05-16 | 2012-05-16 | A three-operating-position isolation grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220219900 CN202678183U (en) | 2012-05-16 | 2012-05-16 | A three-operating-position isolation grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678183U true CN202678183U (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220219900 Expired - Lifetime CN202678183U (en) | 2012-05-16 | 2012-05-16 | A three-operating-position isolation grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678183U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709100A (en) * | 2012-05-16 | 2012-10-03 | 平高集团有限公司 | Three-station isolating grounding switch |
| CN105428133A (en) * | 2015-11-20 | 2016-03-23 | 成都迅德科技有限公司 | Grounding switch |
| CN109326478A (en) * | 2017-08-01 | 2019-02-12 | 平高集团有限公司 | A kind of GIL transmission system and transmission line of electricity |
| CN109599276A (en) * | 2018-12-16 | 2019-04-09 | 山西汾西重工有限责任公司 | Anti-jitter opening/closing method based on oscillating rod type limit signal switch |
| CN109727796A (en) * | 2018-12-31 | 2019-05-07 | 平高集团有限公司 | A kind of isolated switchgear |
| CN110535057A (en) * | 2018-05-23 | 2019-12-03 | 河南平芝高压开关有限公司 | It is installed with the GIS device of isolating/grounding switch divide-shut brake instruction device in place |
| CN111146723A (en) * | 2019-12-30 | 2020-05-12 | 河南平高电气股份有限公司 | Gis |
-
2012
- 2012-05-16 CN CN 201220219900 patent/CN202678183U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709100A (en) * | 2012-05-16 | 2012-10-03 | 平高集团有限公司 | Three-station isolating grounding switch |
| CN102709100B (en) * | 2012-05-16 | 2013-12-11 | 平高集团有限公司 | Three-station isolating grounding switch |
| CN105428133A (en) * | 2015-11-20 | 2016-03-23 | 成都迅德科技有限公司 | Grounding switch |
| CN109326478A (en) * | 2017-08-01 | 2019-02-12 | 平高集团有限公司 | A kind of GIL transmission system and transmission line of electricity |
| CN109326478B (en) * | 2017-08-01 | 2020-11-06 | 平高集团有限公司 | GIL power transmission system and power transmission line |
| CN110535057A (en) * | 2018-05-23 | 2019-12-03 | 河南平芝高压开关有限公司 | It is installed with the GIS device of isolating/grounding switch divide-shut brake instruction device in place |
| CN109599276A (en) * | 2018-12-16 | 2019-04-09 | 山西汾西重工有限责任公司 | Anti-jitter opening/closing method based on oscillating rod type limit signal switch |
| CN109599276B (en) * | 2018-12-16 | 2022-08-26 | 山西汾西重工有限责任公司 | Anti-jitter opening and closing method based on swing rod type limit signal switch |
| CN109727796A (en) * | 2018-12-31 | 2019-05-07 | 平高集团有限公司 | A kind of isolated switchgear |
| CN111146723A (en) * | 2019-12-30 | 2020-05-12 | 河南平高电气股份有限公司 | Gis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |