CN102856128A - Overtravel adjuster for direct current high-speed circuit-breaker - Google Patents
Overtravel adjuster for direct current high-speed circuit-breaker Download PDFInfo
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- CN102856128A CN102856128A CN2012103300206A CN201210330020A CN102856128A CN 102856128 A CN102856128 A CN 102856128A CN 2012103300206 A CN2012103300206 A CN 2012103300206A CN 201210330020 A CN201210330020 A CN 201210330020A CN 102856128 A CN102856128 A CN 102856128A
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- high speed
- speed circuit
- inner sleeve
- circuit breaker
- adjusting nut
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Abstract
The invention discloses an overtravel adjuster for a direct current high speed circuit-breaker, which comprises a direct current high speed circuit-breaker base, a switch-on mechanism arranged on a first insulating vertical plate of the direct current high speed circuit-breaker base, and an upper busbar and a lower busbar respectively fixed on a second insulating vertical plate of the direct current high speed circuit-breaker base. An inner sleeve is arranged in an outer cylinder of the switch-on mechanism, the outer cylinder is fixed on an outer side of the first insulating vertical plate through the inner sleeve, one end of the upper busbar is fixedly connected with a stationary contact, one end of the lower busbar is hinged with the lower end of a moveable contact, and the other ends of the upper and lower busbars are respectively connected with power supply input and output ends correspondingly. The overtravel adjuster further comprises an adjusting nut screwed at one end of the inner sleeve, the end face of which leans against the outer side of the first insulating vertical plate. The overtravel adjuster for the direct current high speed circuit-breaker is simple in structure and convenient to adjust the overtravel length, ensures an ideal contact pressure between the moveable and stationary contacts, and improves the performance of the direct current high speed circuit-breaker.
Description
Technical field
The present invention relates to a kind of DC high speed circuit breaker, particularly a kind of DC high speed circuit breaker is closed a floodgate or the excess of stroke adjusting device during separating brake.Belong to the power supplying and distributing equipment technical field.
Background technology
DC high speed circuit breaker is mounted in the electric protective device between power supply and the load unit, for the protection of the load equipment of motor, transformer and transmission line.The excess of stroke refers to the fully closed rear mobile distance of moving contact of contacts of vacuum switch.The effect of the excess of stroke mainly contains and guarantees that contact still can keep certain contact after electrical wear; Can utilize touch spring power buffering during contact closure, reduce spring; When the contact separating brake of DC high speed circuit breaker, make moving contact obtain certain initial kinetic energy, break the melting welding point, improve initial opening velocity, reduce the arcing time, thereby improve the speed of medium recovery.If the excess of stroke is too little, just can not guarantee contact due contact pressure after scaling loss, simultaneously, initial opening velocity diminishes, and can affect breaking and making and the dynamic and thermal stability performance of vacuum switch, even produces the reclosing springing; If the excess of stroke is too large, can increase the combined floodgate merit of operating mechanism, making closes a floodgate becomes extremely unreliable.Adopt between the flat board between the dynamic and static contact of DC high speed circuit breaker to contact, guarantee that contact is good, the necessary capable of regulating of the length of the excess of stroke, suitable contact between the dynamic and static contact of guarantee.The existing DC high speed circuit breaker excess of stroke is fixed nonadjustable length of design phase, the excess of stroke that the error of accumulating because of processing and the assembling of DC high speed circuit breaker parts all can cause changes, be difficult to realize that the excess of stroke of assembling complete DC high speed circuit breaker is consistent, have a strong impact on the performance of DC high speed circuit breaker.
Summary of the invention
The object of the present invention is to provide a kind of DC high speed circuit breaker excess of stroke adjusting device, realize that the excess of stroke of DC high speed circuit breaker is adjustable, reduce to greatest extent because of the impact on the excess of stroke of machining accuracy and rigging error, thereby better enhance product performance.
Purpose of the present invention is achieved by the following technical programs:
A kind of DC high speed circuit breaker excess of stroke adjusting device, comprise the DC high speed circuit breaker base, be arranged on the switching-on mechanism of the first insulation on the riser of DC high speed circuit breaker base, be separately fixed at from high to low the upper busbar of the second insulation on the riser of DC high speed circuit breaker base, lower busbar, be provided with inner sleeve in the outer cylinder of switching-on mechanism, outer cylinder is fixed on the first insulation riser lateral surface by inner sleeve, described upper busbar one end is fixedly connected with fixed contact, described lower busbar one end and moving contact lower end are hinged, the upper busbar other end, the lower busbar other end respectively with corresponding power input, power output end links to each other; Also comprise adjusting nut, described adjusting nut screws on inner sleeve one end, and the adjusting nut end face is resisted against on the first insulation riser lateral surface.
Purpose of the present invention further realizes by the following technical programs:
Aforesaid DC high speed circuit breaker excess of stroke adjusting device, wherein said inner sleeve outer end is provided with the inner sleeve flange, several trip bolts that pass the inner sleeve flange are fixedly connected with inner sleeve and outer cylinder, and the inner sleeve flange also is fixed on the first insulation riser lateral surface by several securing members.
Aforesaid DC high speed circuit breaker excess of stroke adjusting device, wherein said adjusting nut screws on the inner sleeve flange, and the adjusting nut end face is resisted against on the first insulation riser lateral surface, and several pull mouth described adjusting nut radial equipartition; Described adjusting nut adopts fine thread to be connected with inner sleeve.
The present invention is simple in structure, excess of stroke length adjustment convenient, guarantees contact comparatively desirable between the dynamic and static contact, reduces to greatest extent machining accuracy and rigging error to the impact of the excess of stroke, has improved the performance of DC high speed circuit breaker.
Advantage and disadvantage of the present invention will be for illustration and explanation by the non-limitative illustration of following preferred embodiment, and these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is front view of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 2.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Such as Fig. 1～shown in Figure 3, the present invention includes DC high speed circuit breaker base 1, be arranged on the switching-on mechanism 2 of the first insulation on the riser 11 of DC high speed circuit breaker base 1, be separately fixed at from high to low the upper busbar 13 of the second insulation on the riser 12 of DC high speed circuit breaker base 1, lower busbar 14, and adjusting nut 3, upper busbar 13 1 ends are fixedly connected with fixed contact 15, moving contact 16 stands upright in the prong 141 of lower busbar 14 1 ends, hinged by lateral pin 17 and moving contact 16 lower ends, upper busbar 13 other ends link to each other with the power input copper bar, and lower busbar 14 other ends link to each other with the power output end copper bar by the row that is flexible coupling.Be provided with inner sleeve 22 in the outer cylinder 21 of switching-on mechanism 2, inner sleeve 22 1 ends are provided with inner sleeve flange 221,4 trip bolts 23 that pass inner sleeve flange 221 are fixedly connected with inner sleeve 22 and outer cylinder 21, and inner sleeve flange 221 also is fixed on the first insulation riser 11 lateral surfaces by 4 fastening bolts 24, nut 25.Adjusting nut 3 screws on inner sleeve flange 221, and adjusting nut 3 end faces are resisted against on the first insulation riser 11 lateral surfaces.6 rectangles of adjusting nut 3 radial equipartitions pull mouthfuls 31, be convenient to rotate adjusting nut 3.For the ease of fine setting, adjusting nut 3 adopts fine thread to be connected with inner sleeve 22.
When DC high speed circuit breaker is closed a floodgate, under the promotion of electromagnetic force, push rod 26 in the inner sleeve 22 of switching-on mechanism 2 overcomes the elastic force of spring 27, promotion is positioned at the shift fork 261 of push rod 26 front ends, shift fork 261 promotes to be fixed on moving contact 16 supermedial U-shaped draw-in grooves 161 both sides, clockwise rotate so that be arranged in its hinged center of moving contact 16 movings of shift fork 261, moving contact 16 upper ends are resisted against on the fixed contact 15 finishes combined floodgate.
The adjusting of moving contact 16 excess of stroke is performed such:
At first unclamp the fastening bolt 24, the nut 25 that connect inner sleeve flange 221 and the first insulation riser 11, but fastening bolt 24 or clamp nut 25 are not pulled down, then rotate adjusting nuts 3 with specific purpose tool by pulling mouth 31, so that inner sleeve flange 221 end faces break away from the first insulation riser 11 lateral surfaces, move outside the shift fork 251 at this moment, promote moving contact 16 and be resisted against on the fixed contact 15, guarantee contact required between the dynamic and static contact.
In addition to the implementation, the present invention can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of requirement of the present invention.
Claims (5)
1. DC high speed circuit breaker excess of stroke adjusting device, comprise the DC high speed circuit breaker base, be arranged on the switching-on mechanism of the first insulation on the riser of DC high speed circuit breaker base, be separately fixed at from high to low the upper busbar of the second insulation on the riser of DC high speed circuit breaker base, lower busbar, be provided with inner sleeve in the outer cylinder of switching-on mechanism, outer cylinder is fixed on the first insulation riser lateral surface by inner sleeve, described upper busbar one end is fixedly connected with fixed contact, described lower busbar one end and moving contact lower end are hinged, the upper busbar other end, the lower busbar other end respectively with corresponding power input, power output end links to each other; It is characterized in that, also comprise adjusting nut, described adjusting nut screws on inner sleeve one end, and the adjusting nut end face is resisted against on the first insulation riser lateral surface.
2. DC high speed circuit breaker excess of stroke adjusting device as claimed in claim 1, it is characterized in that, described inner sleeve one end is provided with the inner sleeve flange, several trip bolts that pass the inner sleeve flange are fixedly connected with inner sleeve and outer cylinder, and the inner sleeve flange also is fixed on the first insulation riser lateral surface by several securing members.
3. DC high speed circuit breaker excess of stroke adjusting device as claimed in claim 2 is characterized in that, described adjusting nut screws on the inner sleeve flange, and the adjusting nut end face is resisted against on the first insulation riser lateral surface.
4. such as claim 1 or 3 described DC high speed circuit breaker excess of stroke adjusting devices, it is characterized in that several pull mouth described adjusting nut radial equipartition.
5. DC high speed circuit breaker excess of stroke adjusting device as claimed in claim 4 is characterized in that, described adjusting nut adopts fine thread to be connected with inner sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210330020.6A CN102856128B (en) | 2012-09-10 | 2012-09-10 | Overtravel adjuster for direct current high-speed circuit-breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210330020.6A CN102856128B (en) | 2012-09-10 | 2012-09-10 | Overtravel adjuster for direct current high-speed circuit-breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102856128A true CN102856128A (en) | 2013-01-02 |
| CN102856128B CN102856128B (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210330020.6A Active CN102856128B (en) | 2012-09-10 | 2012-09-10 | Overtravel adjuster for direct current high-speed circuit-breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN102856128B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933521A (en) * | 1988-09-12 | 1990-06-12 | Saint Switch, Inc. | Floating release point switch |
| CN201608131U (en) * | 2010-02-09 | 2010-10-13 | 上海立新电器控制设备有限公司 | Magnetic latching direct-current quick breaker |
| CN201616397U (en) * | 2009-08-06 | 2010-10-27 | 乐清市牵引机电厂 | Permanent-magnet switching on/off DC intelligent circuit breaker |
| CN201946496U (en) * | 2010-11-20 | 2011-08-24 | 潢川县电业局 | Over stroke protective device for circuit breaker transmission bar |
| CN102353480A (en) * | 2011-07-12 | 2012-02-15 | 北京邮电大学 | Normal pressure applying device |
| CN202307675U (en) * | 2011-10-28 | 2012-07-04 | 中国西电电气股份有限公司 | Overtravel adjusting device for vacuum switch contact |
-
2012
- 2012-09-10 CN CN201210330020.6A patent/CN102856128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933521A (en) * | 1988-09-12 | 1990-06-12 | Saint Switch, Inc. | Floating release point switch |
| CN201616397U (en) * | 2009-08-06 | 2010-10-27 | 乐清市牵引机电厂 | Permanent-magnet switching on/off DC intelligent circuit breaker |
| CN201608131U (en) * | 2010-02-09 | 2010-10-13 | 上海立新电器控制设备有限公司 | Magnetic latching direct-current quick breaker |
| CN201946496U (en) * | 2010-11-20 | 2011-08-24 | 潢川县电业局 | Over stroke protective device for circuit breaker transmission bar |
| CN102353480A (en) * | 2011-07-12 | 2012-02-15 | 北京邮电大学 | Normal pressure applying device |
| CN202307675U (en) * | 2011-10-28 | 2012-07-04 | 中国西电电气股份有限公司 | Overtravel adjusting device for vacuum switch contact |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102856128B (en) | 2015-06-03 |
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