CN102709100B - Three-station isolating grounding switch - Google Patents

Three-station isolating grounding switch Download PDF

Info

Publication number
CN102709100B
CN102709100B CN2012101516653A CN201210151665A CN102709100B CN 102709100 B CN102709100 B CN 102709100B CN 2012101516653 A CN2012101516653 A CN 2012101516653A CN 201210151665 A CN201210151665 A CN 201210151665A CN 102709100 B CN102709100 B CN 102709100B
Authority
CN
China
Prior art keywords
contact
grounding
moving contact
movable contact
tension pole
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.)
Active
Application number
CN2012101516653A
Other languages
Chinese (zh)
Other versions
CN102709100A (en
Inventor
李永林
刘春霞
郭学凤
王肖斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
Original Assignee
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pinggao Group Co Ltd, Henan Pinggao Electric Co Ltd filed Critical Pinggao Group Co Ltd
Priority to CN2012101516653A priority Critical patent/CN102709100B/en
Publication of CN102709100A publication Critical patent/CN102709100A/en
Application granted granted Critical
Publication of CN102709100B publication Critical patent/CN102709100B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a three-station isolating grounding switch for a gas-insulated metal-enclosed switch gear. A hole on a grounding contact, which is inserted with a moving contact, is a through hole; at the side of the grounding contact, the moving contact is in drive connection with an insulating tension pole which passes through the through hole and drives the moving contact to move; the switch is provided with a guide mechanism for limiting the insulating tension pole to move 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 tension pole and the moving contact; a driving device comprises a transmission shaft and a crank arm; and the crank arm and the sliding block are in rotational slide fit to form a swing guide rod and sliding block mechanism or are hinged by a connecting rod to form a crank and sliding block mechanism. According to the three-station isolating grounding switch adopting the driving device, the contact is accurate to guide and has low wear; and the reliability is improved.

Description

Three station isolation grounding switchs
Technical field
The present invention 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
Current a kind of three station isolation grounding switchs are to adopt gear & rack structure to drive, disclosed a kind of three station isolation grounding switchs of the Chinese patent that for example application number is 201010590477.1, the motion of its moving contact is that the tooth bar be connected by gear drive and moving contact is realized, in the process of engaged transmission, movable contact block must provide the radially power of relative position of rack-and-pinion that maintains, therefore between the position of moving contact upper rack offside and movable contact block, friction is serious, easily cause the moving contact action to have some setbacks even stuck, reliability is low, affect 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 therefore bring that the moving contact quality is heavy, the housing volume is large and the insulation isolating problem of drive unit and switch.
Summary of the invention
The object of the present invention is to provide a kind of contact guiding accurately, three few station isolation grounding switchs wear and tear.
In order to address the above problem, the technical solution used in the present invention is: on described grounding contact, with the hole of moving contact inserting, be 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 guiding mechanism of restriction insulated tension pole along the 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, form slider and swing guide-bar mechanism or form slider-crank mechanism by rod hinge connection by rotatably being slidably matched between described connecting lever and described slide block.
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 produced 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 maintain good steering capability, avoids the moving contact action to have some setbacks even stuck, has improved reliability.
Described guiding mechanism is fixed on two guide posts parallel with the movable contact block axis up and down 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 embedded for directive wheel on the relative position of described two guide posts or have the groove embedded for guide post on directive wheel.Friction in this structure between guide post and 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 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 that moving contact is 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.
Be provided with buffer structure with the position of movable contact block axis coaxle on the inwall of described Crankarm box.This buffer structure can prevent connecting lever accidental impact Crankarm box, and device security is played to good protective action, improves reliability.
Be provided with the fairlead of arranging with the movable contact block axis coaxle in described movable contact block.Fairlead can further guarantee movable contact cephalomotor level and smooth and maintain 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: near an end of insulating contact, the position corresponding with insulating contact annular jack is provided with dark blind hole to described moving contact, forms cavity structure.Adopt cavity structure can alleviate the moving contact quality on the one hand, reduce operating work, can save material on the other hand, reduce costs, in addition, also can improve Electric Field Distribution on moving contact.
Described switch has a complete sealed gas chamber, controls separately a phase.This structure is isolated mutually each phase air chamber, when maintenance, can phase-splitting carry out, and has avoided some unnecessary interlocks to disassemble, and also is convenient to modular packing and transportation.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further illustrated.
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
As shown in Figure 1, movable contact block 6, supporting seat 10, disc insulator 19 are fixed in housing 2 bottoms to one embodiment of the present of invention 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 Crankarm box 1 by screw and middle the through hole that can make insulated tension pole 12 pass 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 convenience of installation and maintenance, housing 2 is provided with end cap 4, and charge valve 9 is arranged 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 two guide posts parallel with the movable contact block axis 18 up and down 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 embedded for guide post on 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 connecting lever 15, on wheel frame 16 by be connected rotating roller rotate and to be slidably matched with the groove on connecting lever 15 of bearing pin, thereby form 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 grounding contact 3, and is provided with insulating part 13 with the position that is connected.
Be provided with buffer structure 17 with the position of movable contact block axis coaxle on the inwall of described Crankarm box 1, 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, to avoid screw cap, can cause connecting lever 15 limit of moving to meet accident while clashing into and play cushioning effect in reasons such as motor abnormalities.
For Optimal performance, be provided with the fairlead 5 of arranging with the movable contact block axis coaxle in described movable contact block 6.
Near an end of insulating contact 8, the Position Design corresponding with insulating contact annular jack becomes dark blind hole to moving contact described in the present embodiment 11, forms cavity structure.
In addition, described switch has a complete sealed gas chamber, controls separately a phase.When three are used in combination, the air chamber at each phase switch place is isolated mutually.
The present embodiment working method: connecting lever 15 drives by power transmission shaft 14 L ° that turns right from middle position, promote successively wheel frame 16, insulated tension pole 12 and moving contact 11 under the effect of slider and swing guide-bar mechanism, moving contact 11 inserts in insulating contact 8 along the contact base axial-movement, complete isolating switch and close a floodgate, as the signal of the dotted line between movable contact block in Fig. 16, insulating contact 8.
After isolating switch closes a floodgate, if connecting lever 15 drives by power transmission shaft 14 L ° that turns left, under the effect of slider and swing guide-bar mechanism, moving contact 11 is insulated pull bar 12 and pulls disengaging insulating contact 8, enter in movable contact block 6, moving contact 11 mediates again, completes the isolating switch separating brake.
In like manner, under the effect of slider and swing guide-bar mechanism, connecting lever 15 drives by power transmission shaft 14 L ° that turns left, can pull moving contact 11 to complete earthed switch to left movement closes a floodgate, L ° again turns right, moving contact 11 moves right and breaks away from grounding contact 3, enters in movable contact block 6, completes grounding switch tripping.
In other embodiments of the invention, connecting lever 15 can also pass through a rod hinge connection with described slide block, thereby forms slider-crank mechanism.For guide frame, described directive wheel coordinates 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, and now insulated tension pole 12 and wheel frame 16, moving contact 11 is connected that employing is connected or hingedly all can.In addition, can also be in wheel frame 16 left and right sides or wherein a side and movable contact block coaxially be fixedly installed sleeve, employing will wear the guidance mode in 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 coordinates 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. a station isolation grounding switch, comprise: grounding contact, slide-and-guide is assemblied in the moving contact in movable contact block, the drive unit that drives moving contact to move, it is characterized in that: on described grounding contact, with the hole of moving contact inserting, be 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 guiding mechanism of restriction insulated tension pole along the movable contact block axial-movement in insulated tension pole through grounding contact and away from an end of movable contact block, 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, described connecting lever is arranged on insulated tension pole through grounding contact and away from an end of movable contact block, form slider and swing guide-bar mechanism or form slider-crank mechanism by rod hinge connection by rotatably being slidably matched between described connecting lever and described slide block.
2. three station isolation grounding switchs according to claim 1, it is characterized in that: described guiding mechanism is fixed on two guide posts parallel with the movable contact block axis up and down 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 embedded for directive wheel on the relative position of described two guide posts or have the groove embedded for guide post on directive wheel.
3. 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 grounding contact.
4. 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. three station isolation grounding switchs according to claim 3, is characterized in that: on the inwall of described Crankarm box, with the position of movable contact block axis coaxle, be provided with buffer structure.
6. 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 described movable contact block.
7. three station isolation grounding switchs according to claim 1 is characterized in that: near an end of insulating contact, the position corresponding with insulating contact annular jack is provided with dark blind hole, the formation cavity structure to described moving contact.
8. according to described three station isolation grounding switchs of claim 1~7 any one, it is characterized in that: described switch has a complete sealed gas chamber, controls separately a phase.
CN2012101516653A 2012-05-16 2012-05-16 Three-station isolating grounding switch Active CN102709100B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101516653A CN102709100B (en) 2012-05-16 2012-05-16 Three-station isolating grounding switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101516653A CN102709100B (en) 2012-05-16 2012-05-16 Three-station isolating grounding switch

Publications (2)

Publication Number Publication Date
CN102709100A CN102709100A (en) 2012-10-03
CN102709100B true CN102709100B (en) 2013-12-11

Family

ID=46901780

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101516653A Active CN102709100B (en) 2012-05-16 2012-05-16 Three-station isolating grounding switch

Country Status (1)

Country Link
CN (1) CN102709100B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104835674B (en) * 2015-04-30 2017-12-22 国家电网公司 A kind of operating mechanism and the Direct Action Type earthed switch using the operating mechanism
CN105590778B (en) * 2015-12-18 2019-02-22 北京双杰电气股份有限公司 Disconnecting switch
CN105702515B (en) * 2016-03-08 2018-03-02 河南平高电气股份有限公司 A kind of isolation earthing switch mechanism and Cubicle Gas-Insulated Switchgear
CN105761964B (en) * 2016-04-01 2019-01-22 平高集团有限公司 A kind of GIS device and its tri-station isolating switch and moving contact
CN106571251B (en) * 2016-11-08 2019-10-15 河南平高电气股份有限公司 Insulating bar and disconnecting switch with the insulating bar
CN106548899A (en) * 2016-12-09 2017-03-29 河南平芝高压开关有限公司 Action shifter and the disconnecting switch and GIS device using the mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201536079U (en) * 2009-08-27 2010-07-28 广州白云电器设备股份有限公司 Three position switch of high pressure gas-insulated switchgear device
CN102024606A (en) * 2010-12-16 2011-04-20 上海思源高压开关有限公司 Three-station isolation ground switch
CN202678183U (en) * 2012-05-16 2013-01-16 平高集团有限公司 A three-operating-position isolation grounding switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201536079U (en) * 2009-08-27 2010-07-28 广州白云电器设备股份有限公司 Three position switch of high pressure gas-insulated switchgear device
CN102024606A (en) * 2010-12-16 2011-04-20 上海思源高压开关有限公司 Three-station isolation ground switch
CN202678183U (en) * 2012-05-16 2013-01-16 平高集团有限公司 A three-operating-position isolation grounding switch

Also Published As

Publication number Publication date
CN102709100A (en) 2012-10-03

Similar Documents

Publication Publication Date Title
CN102709100B (en) Three-station isolating grounding switch
CN202678183U (en) A three-operating-position isolation grounding switch
CN203109949U (en) Intelligent detecting robot for connecting rod peristalsis insulator string
CN102024606B (en) Three-station isolation ground switch
CN102621429A (en) Horizontal duplex insulator string on-line detection robot
CN204044263U (en) Pantograph contact line relation testing table
CN205881795U (en) Vacuum circuit breaker
CN102820162B (en) Double-acting high-voltage sulfur hexafluoride circuit breaker and double-acting transmission device thereof
CN202522644U (en) Live detection robot for horizontal double insulator strings
CN206685298U (en) A kind of earthing for having making capability
CN101582347A (en) Permanent magnet type 35KV vacuum circuit breaker
CN201576609U (en) Electric operation device of indoor high-voltage isolating switch
CN102832073A (en) Grounding switch for direct-current valve hall and grounding conducting rod mechanism of grounding switch
CN102832074B (en) Earthing switch for direct current valve hall
CN101710544A (en) Electric operating device of indoor high-voltage isolating switch
CN202721073U (en) Grounding switch used for direct current valve hall
CN204857564U (en) Horizontal circuit breaker with permanent magnetic mechanism
CN101645368A (en) Electric switch provided with separate arc-extinguishing device
CN202084827U (en) Valve mechanism with double pulleys for 40.5kV high-voltage switch equipment
CN202957181U (en) Three-station operation device for inflatable cabinet
CN203573891U (en) Indoor high-voltage direct-operated isolating and grounding switch
CN202839438U (en) Double-acting high-voltage sulfur-hexafluoride circuit breaker and double-acting transmission device thereof
CN202522643U (en) Live detection robot for double strain insulator strings
CN106601541B (en) A kind of breaker
CN102882138B (en) Movable door mechanism of high-tension switch cabinet

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant