CN201387842Y - Link gear for vacuum circuit breaker - Google Patents
Link gear for vacuum circuit breaker Download PDFInfo
- Publication number
- CN201387842Y CN201387842Y CN200920093348U CN200920093348U CN201387842Y CN 201387842 Y CN201387842 Y CN 201387842Y CN 200920093348 U CN200920093348 U CN 200920093348U CN 200920093348 U CN200920093348 U CN 200920093348U CN 201387842 Y CN201387842 Y CN 201387842Y
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- CN
- China
- Prior art keywords
- stage clip
- pressure bar
- closing pressure
- switch
- separating brake
- 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.)
- Expired - Fee Related
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a link gear for a vacuum circuit breaker, which comprises a frame, a switch-on pressure rod, a lever and an insulating pull rod, and is characterized in that: the structure of an adjusting component of the arranged switch-on pressure rod comprises the switch-on pressure rod, a long rabbet at the lower end of the switch-on pressure rod is moveably connected with the lever by a matched front shaft pin, rotating wheels are respectively hinged with two sides on the front shaft pin and positioned at the lower end of the switch-on pressure rod; a lower end cover, a switch-on pressure spring and an upper end cover are sequentially sheathed on the switch-on pressure rod from top to bottom; the lower end cover is contacted with the rotating wheels which are respectively hinged with the two sides on the front shaft pin and positioned at the lower end of the switch-on pressure rod; the upper end of the switch-on pressure rod is in threaded connection with an adjusting rod, the frame is internally fixed with a bracket, the bracket is provided with a switch-off pressure spring guide rod in a penetrating way, a switch-off pressure spring is sheathed on the switch-off pressure spring guide rod, the upper end of the switch-off pressure spring guide rod is connected with a nut, and the lower end of the switch-off pressure spring guide rod is hinged with the lever. The link gear has the advantages of reasonable structure, reliable action, long service life and the like.
Description
Technical field
The utility model belongs to electric switch vacuum circuit-breaker parts, is a kind of vacuum circuit-breaker link gear.
Background technology
Existing vacuum circuit-breaker mainly comprises framework, electromagnetic operating mechanism, link gear and places the indoor dynamic and static contact of vacuum extinction, the closing pressure bar of the power transmission shaft of electromagnetic operating mechanism and link gear is connected by main connecting lever, main connecting lever is articulated on the framework, the indoor moving contact of the insulated tension pole of link gear and vacuum extinction is connected, and fixed contact is fixed on the indoor upper end of vacuum extinction and relative with moving contact.The structure of link gear is, comprise framework, closing pressure bar, lever, insulated tension pole, combined floodgate dish spring and separating brake extension spring, the upper end of closing pressure bar is connected with hinged main connecting lever on framework, the lower end of closing pressure bar and lever front end are hinged, lever is hinged on the framework by back shaft, and the upper end and the framework of separating brake extension spring articulate, and the lower end and the lever of separating brake extension spring articulate, the rear end and the insulated tension pole of lever are hinged, and combined floodgate dish spring is put in insulated tension pole.
The course of work of vacuum circuit-breaker is: by off-state to on-state, the coil of electromagnetic operating mechanism leads to forward current, moving iron core drives the power transmission shaft that is connected with it and moves down, power transmission shaft drives the closing pressure bar by main connecting lever and moves down, the closing pressure masthead presses the lever front end that lever is rotated around the back shaft of framework, lever rear end roof pressure insulated tension pole, the pressured condensation lock of insulated tension pole disc spring force move up moving contact to contact with fixed contact and make the vacuum circuit-breaker conducting; By on-state to off-state, the coil of electromagnetic operating mechanism leads to reverse current, moving iron core drives the power transmission shaft that is connected with it and moves up, power transmission shaft drives the closing pressure bar by main connecting lever and moves up, tie-bar bar front end makes lever rotate around the back shaft of framework in closing pressure bar and the separating brake extension spring, the drop-down insulated tension pole of lever rear end, insulated tension pole discharge the combined floodgate disc spring force to be moved down moving contact to separate with fixed contact and vacuum circuit-breaker is disconnected.Because the link gear of this vacuum circuit-breaker adopts at the built-in combined floodgate dish of insulated tension pole spring structure, frequent compression easily produces mechanical fatigue, elastic force is reduced, pressure stroke reduces and cause the contact pressure deficiency of dynamic and static contact, the not enough meeting of dynamic and static contact contact pressure strengthens contact resistance and produces high temperature even the starting the arc takes place, the useful life of having reduced vacuum circuit-breaker; Also owing to adopt the separating brake extension spring, the hook of separating brake extension spring and effective length junction have stress to concentrate, and stress raiser easily produces fracture, influences the separating brake of vacuum circuit-breaker.
Summary of the invention
Technical problem to be solved in the utility model is, prior art is improved, and provides a kind of rational in infrastructure, reliable in action, the vacuum circuit-breaker link gear of long service life.
The technical scheme that solves its technical problem employing is: a kind of vacuum circuit-breaker link gear, it comprises framework 15, closing pressure bar 11, lever 14, insulated tension pole 17, lever 14 is hinged on the bottom in the framework 15, the rear end of lever 14 and insulated tension pole 17 are hinged, it is characterized in that: be provided with closing pressure bar adjusting part 30, the structure of described closing pressure bar adjusting part 30 is, comprise closing pressure bar 11, the long rabbet 12 of closing pressure bar 11 lower ends flexibly connects with lever 14 by the preceding pivot pin 13 that matches, on preceding pivot pin 13, and the both sides that are positioned at closing pressure bar 11 lower ends are hinged with runner 28 respectively, on closing pressure bar 11, be nested with bottom end cover 27 from bottom to up successively, combined floodgate stage clip 10 and upper end cover 9, bottom end cover 27 is with on preceding pivot pin 13, and the hinged respectively runner 28 in the both sides that are positioned at closing pressure bar 11 lower ends contacts, closing pressure bar 11 upper ends are threaded with adjusting rod 8, at framework 15 internal fixation support 22 is arranged, on support 22, be coated with separating brake stage clip guide post 21, on separating brake stage clip guide post 21, be nested with separating brake stage clip 20, the upper end of separating brake stage clip guide post 21 is connected with nut 18, and the lower end and the lever 14 of separating brake stage clip guide post 21 are hinged.The combined floodgate stage clip 10 of described closing pressure bar adjusting part 30 is for being nested with the stage clip 32 or the inside and outside stage clip 31,32 that closes a floodgate outside the combined floodgate on closing pressure bar 11.Described separating brake stage clip 20 is for being nested with stage clip 34 or the inside and outside stage clip 33,34 of separating brake outside the separating brake on separating brake stage clip guide post 21.
Vacuum circuit-breaker link gear of the present utility model, owing to be provided with closing pressure bar adjusting part, the long rabbet of the closing pressure bar lower end of closing pressure bar adjusting part flexibly connects by preceding pivot pin and the lever that matches, on the closing pressure bar, be nested with the combined floodgate stage clip, bottom end cover is with on preceding pivot pin, and the hinged respectively runner in both sides that is positioned at closing pressure bar lower end contacts, the structure that closing pressure bar upper end is threaded with adjusting rod, can screw in the shift motion of the length adjustment closing pressure bar in the closing pressure bar screwed hole and the pressure of combined floodgate stage clip by adjusting rod, thus the displacement of realization insulated tension pole and moving, the adjusting of fixed contact contact pressure; The long rabbet of the closing pressure bar lower end of closing pressure bar adjusting part flexibly connects by preceding pivot pin and the lever that matches, bottom end cover is with on preceding pivot pin and be positioned at the hinged respectively runner in the both sides of closing pressure bar lower end and contact, can also make to interconnect and have good automatic centering performance with the contact position, reduce component, guarantee the reliability of feed motion.Owing on the support of framework internal fixation, install separating brake stage clip guide post, on separating brake stage clip guide post, be nested with the separating brake stage clip, separating brake stage clip guide post upper end is connected with nut, the lower end and the lever of separating brake stage clip guide post are hinged, separating brake stage clip good springiness, and do not have stress to concentrate, guarantee the reliability of separating brake action.The combined floodgate stage clip of closing pressure bar adjusting part helps to set up needed closing pressure for the inside and outside stage clip that closes a floodgate.The separating brake stage clip is that the inside and outside stage clip of separating brake helps to set up needed minute brake pressure.Have advantages such as rational in infrastructure, reliable in action, long service life.
Description of drawings
Fig. 1 is the vacuum circuit-breaker application structure cross-sectional schematic of link gear in vacuum circuit-breaker.
Fig. 2 is an A-A section enlarged diagram among Fig. 1.
Among the figure: 1 moving iron core, 2 power transmission shafts, 3 coils, pivot pin on 4,5 main connecting levers, 6 main shafts, 7 lower shaft pins, 8 adjusting rods, 9 upper end covers, 10 combined floodgate stage clips, 11 closing pressure bars, 12 long rabbets, pivot pin before 13,14 levers, 15 frameworks, 16 arc control device, 17 insulated tension poles, 18 nuts, 19 packing rings, 20 separating brake stage clips, 21 separating brake stage clip guide posts, 22 supports, 23 pivot pins, 24 back pivot pins, 25 back shafts, 26 moving contacts, 27 bottom end covers, 28 runners, 29 fixed contacts, 30 closing pressure bar adjusting parts, stage clip in 31 combined floodgates, the outer stage clip of 32 combined floodgates, stage clip in 33 separating brakes, the outer stage clip of 34 separating brakes.
Embodiment
The utility model is described in further detail to utilize drawings and Examples below.
With reference to Fig. 1 and 2, vacuum circuit-breaker comprises framework 15 with link gear, closing pressure bar 11, and lever 14, insulated tension pole 17, lever 14 is hinged on bottom in the framework 15 by back shaft 25, and the rear end of lever 14 is hinged with insulated tension pole 17 by back pivot pin 24.Be provided with closing pressure bar adjusting part 30, the structure of described closing pressure bar adjusting part 30 is, comprise closing pressure bar 11, the long rabbet 12 of closing pressure bar 11 lower ends flexibly connects by the front end of the preceding pivot pin that matches 13 with lever 14, on preceding pivot pin 13, and the both sides that are positioned at closing pressure bar 11 lower ends are hinged with runner 28 respectively, on closing pressure bar 11, be nested with bottom end cover 27 from bottom to up successively, combined floodgate stage clip 10 and upper end cover 9, bottom end cover 27 is with on preceding pivot pin 13, and the hinged respectively runner 28 in the both sides that are positioned at closing pressure bar 11 lower ends contacts, and closing pressure bar 11 upper ends are threaded with adjusting rod 8.At framework 15 internal fixation support 22 is arranged, on support 22, be coated with separating brake stage clip guide post 21, on separating brake stage clip guide post 21, be nested with separating brake stage clip 20, separating brake stage clip guide post 21 upper ends are connected with nut 18, between nut 18 and separating brake stage clip 20 upper surfaces, between separating brake stage clip 20 lower surfaces and support 22 upper surfaces packing ring 19 is set all, the lower end of separating brake stage clip guide post 21 is hinged by pivot pin 23 and lever 14.The combined floodgate stage clip 10 of described closing pressure bar adjusting part 30 is for being nested with the stage clip 32 or the inside and outside stage clip 31,32 that closes a floodgate outside the combined floodgate on closing pressure bar 11.Described separating brake stage clip 20 is for being nested with stage clip 34 or the inside and outside stage clip 33,34 of separating brake outside the separating brake on separating brake stage clip guide post 21.
The course of work of vacuum circuit-breaker is:
By off-state to on-state, the coil 3 logical forward currents of electromagnetic operating mechanism, moving iron core 1 drives the power transmission shaft 2 that is connected with it and moves down, because of power transmission shaft 2 hinged by last pivot pin 4 with main connecting lever 5, main connecting lever 5 is hinged on the framework 15 by main shaft 6, the adjusting rod 8 of closing pressure bar adjusting part 30 is hinged by lower shaft pin 7 and main connecting lever 5, so power transmission shaft 2 drives closing pressure bar adjusting part 30 and moves down around main shaft 6, the pressure of closing pressure bar 11 thrusts and combined floodgate stage clip 10 all acts on the front end of lever 14, lever 14 is rotated around back shaft 25, lever 14 rear end roof pressure insulated tension poles 17, insulated tension pole 17 and arc control device 16 built-in moving contacts 26 are connected, and moving contact 26 moves up and contacts with the built-in fixed contact 29 of arc control device 16 and make the vacuum circuit-breaker conducting;
By on-state to off-state, the coil 3 logical reverse currents of electromagnetic operating mechanism, moving iron core 1 drives the power transmission shaft 2 that is connected with it and moves up, separating brake stage clip 20 release pressures when power transmission shaft 2 moves up by main connecting lever 5 drive closing pressure bar adjusting parts 30, lever 14 is around back shaft 25 backward rotation, the drop-down insulated tension pole 17 in lever 14 rear ends, insulated tension pole 17 move down moving contact 26 to separate with fixed contact 29 and vacuum circuit-breaker are disconnected.
Claims (3)
1. vacuum circuit-breaker link gear, it comprises framework (15), closing pressure bar (11), lever (14), insulated tension pole (17), lever (14) is hinged on the bottom in the framework (15), the rear end of lever (14) and insulated tension pole (17) are hinged, it is characterized in that: be provided with closing pressure bar adjusting part (30), the structure of described closing pressure bar adjusting part (30) is, comprise closing pressure bar (11), the long rabbet (12) of closing pressure bar (11) lower end flexibly connects with lever (14) by the preceding pivot pin (13) that matches, on preceding pivot pin (13), and the both sides that are positioned at closing pressure bar (11) lower end are hinged with runner (28) respectively, on closing pressure bar (11), be nested with bottom end cover (27) from bottom to up successively, combined floodgate stage clip (10) and upper end cover (9), bottom end cover (27) is with on preceding pivot pin (13), and the both sides hinged runner (28) of difference that is positioned at closing pressure bar (11) lower end contacts, closing pressure bar (11) upper end is threaded with adjusting rod (8), at framework (15) internal fixation support (22) is arranged, on support (22), be coated with separating brake stage clip guide post (21), on separating brake stage clip guide post (21), be nested with separating brake stage clip (20), the upper end of separating brake stage clip guide post (21) is connected with nut (18), and the lower end of separating brake stage clip guide post (21) and lever (14) are hinged.
2. vacuum circuit-breaker link gear according to claim 1 is characterized in that: the combined floodgate stage clip (10) of described closing pressure bar adjusting part (30) is for being nested with stage clip (32) or the inside and outside stage clip that closes a floodgate (31,32) outside the combined floodgate on closing pressure bar (11).
3. vacuum circuit-breaker link gear according to claim 1 is characterized in that: described separating brake stage clip (20) is for being nested with stage clip (34) or the inside and outside stage clip of separating brake (33,34) outside the separating brake on separating brake guide post (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920093348U CN201387842Y (en) | 2009-04-07 | 2009-04-07 | Link gear for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920093348U CN201387842Y (en) | 2009-04-07 | 2009-04-07 | Link gear for vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387842Y true CN201387842Y (en) | 2010-01-20 |
Family
ID=41580383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920093348U Expired - Fee Related CN201387842Y (en) | 2009-04-07 | 2009-04-07 | Link gear for vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387842Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779702A (en) * | 2012-07-30 | 2012-11-14 | 上海天灵开关厂有限公司 | Gas insulation type plug with temperature protection function |
| CN110600321A (en) * | 2019-08-29 | 2019-12-20 | 常德威迪电气有限责任公司 | Strut type circuit breaker with insulation pull rod |
| CN112041960A (en) * | 2018-04-18 | 2020-12-04 | 西门子股份公司 | High-voltage power switch with closing resistor device |
-
2009
- 2009-04-07 CN CN200920093348U patent/CN201387842Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779702A (en) * | 2012-07-30 | 2012-11-14 | 上海天灵开关厂有限公司 | Gas insulation type plug with temperature protection function |
| CN102779702B (en) * | 2012-07-30 | 2015-02-11 | 上海天灵开关厂有限公司 | Gas insulation type plug with temperature protection function |
| CN112041960A (en) * | 2018-04-18 | 2020-12-04 | 西门子股份公司 | High-voltage power switch with closing resistor device |
| US11587748B2 (en) | 2018-04-18 | 2023-02-21 | Siemens Energy Global GmbH & Co. KG | High-voltage power switch with closing resistor arrangement |
| CN110600321A (en) * | 2019-08-29 | 2019-12-20 | 常德威迪电气有限责任公司 | Strut type circuit breaker with insulation pull rod |
| CN110600321B (en) * | 2019-08-29 | 2021-05-07 | 常德威迪电气有限责任公司 | Strut type circuit breaker with insulation pull rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20110407 |