CN203397927U - Vacuum bubble switching mechanism and on-load tap-changer - Google Patents
Vacuum bubble switching mechanism and on-load tap-changer Download PDFInfo
- Publication number
- CN203397927U CN203397927U CN201320416931.0U CN201320416931U CN203397927U CN 203397927 U CN203397927 U CN 203397927U CN 201320416931 U CN201320416931 U CN 201320416931U CN 203397927 U CN203397927 U CN 203397927U
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- China
- Prior art keywords
- vacuum bubbles
- shift fork
- switching
- switching mechanism
- shifting block
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Abstract
The utility model discloses a vacuum bubble switching mechanism and an on-load tap-changer. The vacuum bubble switching mechanism comprises a guide plate, a switching shifting block, a shifting yoke, a template and two vacuum bubble structures, wherein the switching shifting block is fixed on a sliding plate; the shifting yoke is rotationally connected with the switching shifting block, fixedly connected with the template, and mounted on the guide plate by a bearing; a plurality of arc guide grooves are formed in the template; position lifting devices of the two vacuum bubble structures are arranged in the arc guide grooves and connected with the tail ends of vacuum bubble movable contacts; the sliding plate conducts horizontal step motion under the action of an external power driving mechanism; the switching shifting block drives the shifting yoke and the template to rotate in a plane; and the two vacuum bubble structures move up and down along the arc guide grooves in the template. The on-load tap-changer employs the vacuum bubble switching mechanism. According to the vacuum bubble switching mechanism, the template is separated from the sliding plate, and slight inclination of the sliding plate cannot influence the working condition of the template and working strokes of vacuum bubbles. The vacuum bubble switching mechanism has the advantages of low mounting difficulty and high accuracy.
Description
Technical field
The utility model relates to power transformer load tap changer research field, particularly a kind of vacuum bubbles switching mechanism on load tap changer and this on load tap changer.
Background technology
Vacuum bubbles for vacuum on-load operation switch is an extremely important switch element, and its Stroke Control can have a huge impact the work of vacuum bubbles, and effective, high-precision its stroke of control is the key that makes vacuum bubbles normal operation.
The drive unit of available technology adopting is that a square gauge finder is fixed on slide plate side, be that gauge finder and slide plate are solidified as a whole, and gauge finder is fixed on roller bearing on insulation board by one, retrain that it is longitudinal, be intended to limit the lengthwise movement of gauge finder and play support skid.Yet there is following shortcoming in such structure: (1), owing to there is gap between roller bearing and insulation board slot, the gauge finder of constraint longitudinally can be offset in this way, and this skew can act directly on vacuum bubbles stroke, produces journey error; (2) when the stressed inclination of slide plate, gauge finder also tilts, and equally also causes the position of gauge finder to change, and can longitudinally produce error equally, and this error also can be reflected in the impulse stroke of vacuum bubbles; (3) this structure precision is had relatively high expectations, and difficulty is installed.
Therefore, find that a kind of that the vacuum bubbles switching mechanism for vacuum on-load operation switch convenient and that precision is high is installed is significant.
Utility model content
Main purpose of the present utility model is to overcome the shortcoming of prior art with not enough, provides a kind of vacuum bubbles switching mechanism ，Gai mechanism to have advantages of to install convenient and movement travel precision is high.
The utility model also provides a kind of on load tap changer based on above-mentioned vacuum bubbles switching mechanism.
The purpose of this utility model realizes by following technical scheme: a kind of vacuum bubbles switching mechanism, comprise guide plate, switch shifting block, shift fork, gauge finder and two vacuum bubbles structures, switching shifting block is fixed on a slide plate, shift fork is rotatably connected with switching shifting block, shift fork is fixedly connected with gauge finder, and shift fork is arranged on guide plate by bearing; Gauge finder is provided with several arc guide barrels, a device of carrying for two vacuum bubbles structures is arranged in this arc guide barrel, be connected with vacuum bubbles moving contact end, slide plate is externally done the galloping motion of level under the effect of power-driven mechanism, switch shifting block and drive shift fork and gauge finder planar to rotate, two vacuum bubbles structures move up and down along gauge finder arc guide groove.Thereby realizing vacuum bubbles switches one on the other in turn.In the utility model, gauge finder is separated with slide plate, and the small skew of slide plate can not have influence on the operating state of gauge finder, thereby can not have influence on vacuum bubbles impulse stroke, has reduced installation difficulty.
Concrete, described gauge finder is fan-shaped, is provided with two arc guide barrels, and inner side slot is that radius great Er two ends, middle part radius is little, and outer side slot is that radius little Er two ends, middle part radius is large.
As a kind of preferred mode, described switching shifting block is fixed on the side of slide plate, shift fork comprises a forked groove He Yi hole, switch shifting block and be provided with a roller bearing, be placed in this forked groove, roller bearing one side contacts with groove all the time, separately there is a rolling bearing to be arranged on described in shift fork in hole, gauge finder is fixed on shift fork, and when switching the motion of shifting block occurred level, shift fork drives gauge finder to swing around hole described in shift fork.By this structure, can make shift fork, switching shifting block lengthwise position fix, reduce journey error.
As another kind of optimal way, described switching shifting block is fixed on the side of slide plate, shift fork comprises an elongated slot He Yi hole, switching shifting block and shift fork is rotatably connected by this elongated slot, separately there is a rolling bearing to be arranged on described in shift fork in hole, gauge finder is fixed on shift fork, and when switching the motion of shifting block occurred level, shift fork drives gauge finder to swing around hole described in shift fork.
Preferably, described two vacuum bubbles structures are specially main vacuum bubbles structure and secondary vacuum bubbles structure, in main vacuum bubbles structure, main vacuum bubbles is fixed on the insulation board of vacuum bubbles structure rear side by main vacuum bubbles mount pad, main vacuum bubbles upper end is fixed with main vacuum bubbles junction block, and the wire that autonomous vacuum bubbles junction block is drawn is connected on a wiring contact; Vacuum bubbles moving contact end is proposed the pre-stressed joint of a device with master, in secondary vacuum bubbles structure, secondary vacuum bubbles is fixed on the insulation board of vacuum bubbles structure rear side by secondary vacuum bubbles mount pad, secondary vacuum bubbles upper end is fixed with secondary vacuum bubbles junction block, and the wire of drawing from secondary vacuum bubbles junction block is connected on same wiring contact; Vacuum bubbles moving contact end and pair are proposed the pre-stressed joint of a device.
Preferably, described guide plate middle part offers a long guide groove and both sides offer respectively draw-in groove, a main device of carrying is all fixed with a roller with a secondary screwed hole that device middle part is offered of carrying, be constrained in guide plate draw-in groove, both heads are fixed with respectively a roller bearing, and this roller shaft bears gauge finder arc guide barrel and the long guide groove of guide plate retrains jointly.By such mode make main carry a device and pair carry a device can only be according to certain regular motion, two propose a device vertical lifting or decline along the longitudinal, thereby make vacuum bubbles moving contact end longitudinally be raised or to put down.
A kind of on load tap changer based on above-mentioned vacuum bubbles switching mechanism, comprise 3 groups of above-mentioned vacuum bubbles switching mechanisms, respectively corresponding each phase, in on load tap changer, be provided with two eradication edge crossbeams, each vacuum bubbles switching mechanism rear side is provided with collets, is fixedly installed insulation board and guide plate on collets, and vacuum bubbles structure is fixed on collets, each vacuum bubbles switching mechanism is connected with the power-driven mechanism on load tap changer on the one hand, is arranged on the other hand on the crossbeam in frame.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, in the utility model, gauge finder is separated with slide plate, and the small skew of slide plate can not have influence on the operating state of gauge finder, thereby can not have influence on vacuum bubbles impulse stroke, has not only reduced installation difficulty, and has improved precision.
2, in the utility model, adopt rolling bearing to replace groove and roller bearing structure to locate gauge finder, improved kinematic accuracy, with this, improve vacuum bubbles functional reliability, simultaneously also convenient installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of shift fork part in the utility model embodiment 2.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment 1
As shown in Figure 1, vacuum bubbles switching mechanism described in the present embodiment, comprises guide plate, switches shifting block 8, shift fork 7, gauge finder 6 and two vacuum bubbles structures, and shift fork 7 is provided with bearing mounting hole, and rolling bearing 22 is installed in it; On guide plate 11, offer in Yi Kong， hole and be fixed with a latch 21, rolling bearing 22 is arranged on latch 21 together with shift fork 7, and shift fork 7 can be rotated around Fixed latches.Gauge finder 6 is bolted on shift fork 7, can rotate with shift fork 7.Switch the side that shifting block 8 is installed in slide plate 1, a roller bearing 9 is installed on it, be placed in the forked groove of shift fork 7, always with forked groove one side contacts.
The course of work of the present embodiment is: when slide plate 1 is externally done the galloping motion of level under the effect of power-driven mechanism, drive and switch shifting block 8 and roller bearing 9 left and right rapid movements, under the stirring of roller bearing 9, shift fork 7 with gauge finder 6 around latch 21 rotations.
Gauge finder is fan-shaped, is provided with two arc guide barrels, and inner side slot is that radius great Er two ends, middle part radius is little, and outer side slot is that radius little Er two ends, middle part radius is large.A device of carrying for two vacuum bubbles structures is arranged in this arc guide barrel, is connected with vacuum bubbles moving contact end,
In the present embodiment, symmetrical place, guide plate 11 both sides offers draw-in groove, and a long guide groove is offered in symmetry axis position; Guide plate 11 is bolted on the fixed insulation frame being jointly comprised of insulation crossbeam 2,12 and collets 3 with insulation board 10.Meanwhile, main vacuum bubbles 52 is fixed on insulating frame by main vacuum bubbles mount pad 41, secondary vacuum bubbles mount pad 42 respectively with secondary vacuum bubbles 51, both upper ends are fixed with respectively main vacuum bubbles junction block 17, secondary vacuum bubbles junction block 18, and the wire 19,20 of drawing respectively from vacuum bubbles junction block is all connected on a wiring contact 16; Two vacuum bubbles moving contact ends 521,512 are carried a device 13 with master respectively, pair is proposed the pre-stressed joint of a device 14; Two carry the screwed hole of offering at a device 13,14 middle parts is all fixed with a roller, be constrained in guide plate draw-in groove, by such mode, make both can only be according to certain regular motion, and can not depart from guide plate constraint, both heads are fixed with respectively a roller bearing, this roller shaft bears gauge finder 6 arc guide barrels and the long guide groove of guide plate 11 retrains jointly, under these constraints, two propose a device 13,14 vertical lifting or decline along the longitudinal, thereby make vacuum bubbles moving contact end 512,521 longitudinally be raised or to put down.
In conjunction with described vacuum bubbles switching mechanism, further illustrate specific works process of the present utility model below.Slide plate 1 is externally done the galloping motion of level under the effect of power-driven mechanism, in this process, 9 pairs of shift fork 7 forked groove generation effects of roller bearing on switching mechanism 8 on it are also stirred forked groove and are switched to the left or to the right, drive thus shift fork 7 with gauge finder 6 around latch 21 rotations.Be subject to the deep-slotted chip breaker structural constraint of gauge finder 6, two carry a device 13,14 when gauge finder 6 rotatablely moves, one of them first makes progress, and to move downward afterwards another one just in time contrary, elder generation moves upward downwards, these two motions of carrying a device 13,14 act directly in vacuum bubbles, make vacuum bubbles realize the effect of a conducting, a disconnection, with this, realize main on-off circuit and switch.
The present embodiment except following characteristics other structures with embodiment 1:
In the present embodiment, described switching shifting block is fixed on the side of slide plate, and shift fork 7 is arranged on latch 21 by rolling bearing, offers an elongated slot on it, wherein places the roller bearing 9 of switching on shifting block 8.Gauge finder 6 is welded as a whole with shift fork 7.The working method of this structure is: when slide plate 1 slides to the left or to the right, drive switching shifting block 8 and roller bearing 9 to move to the left or to the right, with this simultaneously, shift fork 7 is swung by stirring to the left or to the right of roller bearing 9, drives the gauge finder on it to swing around latch 21.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (7)
1. a vacuum bubbles switching mechanism, is characterized in that, comprises guide plate, switches shifting block, shift fork, gauge finder and two vacuum bubbles structures, switching shifting block is fixed on a slide plate, shift fork is rotatably connected with switching shifting block, and shift fork is fixedly connected with gauge finder, and shift fork is arranged on guide plate by bearing; Gauge finder is provided with several arc guide barrels, a device of carrying for two vacuum bubbles structures is arranged in this arc guide barrel, be connected with vacuum bubbles moving contact end, slide plate is externally done the galloping motion of level under the effect of power-driven mechanism, switch shifting block and drive shift fork and gauge finder planar to rotate, two vacuum bubbles structures move up and down along gauge finder arc guide groove.
2. vacuum bubbles switching mechanism according to claim 1, is characterized in that, described gauge finder is fan-shaped, is provided with two arc guide barrels, and inner side slot is that radius great Er two ends, middle part radius is little, and outer side slot is that radius little Er two ends, middle part radius is large.
3. vacuum bubbles switching mechanism according to claim 1, it is characterized in that, described switching shifting block is fixed on the side of slide plate, and shift fork comprises a forked groove He Yi hole, switches shifting block and is provided with a roller bearing, be placed in this forked groove, roller bearing one side contacts with groove all the time, separately has a rolling bearing to be arranged on described in shift fork in hole, and gauge finder is fixed on shift fork, when switching the motion of shifting block occurred level, shift fork drives gauge finder to swing around hole described in shift fork.
4. vacuum bubbles switching mechanism according to claim 1, it is characterized in that, described switching shifting block is fixed on the side of slide plate, shift fork comprises an elongated slot He Yi hole, switch shifting block and shift fork and be rotatably connected by this elongated slot, separately have a rolling bearing to be arranged on described in shift fork in hole, gauge finder is fixed on shift fork, when switching the motion of shifting block occurred level, shift fork drives gauge finder to swing around hole described in shift fork.
5. according to the vacuum bubbles switching mechanism described in claim 3 or 4, it is characterized in that, described two vacuum bubbles structures are specially main vacuum bubbles structure and secondary vacuum bubbles structure, in main vacuum bubbles structure, main vacuum bubbles is fixed on the insulation board of vacuum bubbles structure rear side by main vacuum bubbles mount pad, main vacuum bubbles upper end is fixed with main vacuum bubbles junction block, and the wire that autonomous vacuum bubbles junction block is drawn is connected on a wiring contact; Vacuum bubbles moving contact end is proposed the pre-stressed joint of a device with master, in secondary vacuum bubbles structure, secondary vacuum bubbles is fixed on the insulation board of vacuum bubbles structure rear side by secondary vacuum bubbles mount pad, secondary vacuum bubbles upper end is fixed with secondary vacuum bubbles junction block, and the wire of drawing from secondary vacuum bubbles junction block is connected on same wiring contact; Vacuum bubbles moving contact end and pair are proposed the pre-stressed joint of a device.
6. vacuum bubbles switching mechanism according to claim 5, it is characterized in that, described guide plate middle part offers a long guide groove and both sides offer respectively draw-in groove, a main device of carrying is all fixed with a roller with a secondary screwed hole that device middle part is offered of carrying, be constrained in guide plate draw-in groove, both heads are fixed with respectively a roller bearing, and this roller shaft bears gauge finder arc guide barrel and the long guide groove of guide plate retrains jointly.
7. the on load tap changer based on vacuum bubbles switching mechanism claimed in claim 1, it is characterized in that, comprise 3 groups of above-mentioned vacuum bubbles switching mechanisms, respectively corresponding each phase, in on load tap changer, be provided with two eradication edge crossbeams, each vacuum bubbles switching mechanism rear side is provided with collets, on collets, be fixedly installed insulation board and guide plate, vacuum bubbles structure is fixed on collets, each vacuum bubbles switching mechanism is connected with the power-driven mechanism on load tap changer on the one hand, is arranged on the other hand on the crossbeam in frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416931.0U CN203397927U (en) | 2013-07-12 | 2013-07-12 | Vacuum bubble switching mechanism and on-load tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416931.0U CN203397927U (en) | 2013-07-12 | 2013-07-12 | Vacuum bubble switching mechanism and on-load tap-changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203397927U true CN203397927U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416931.0U Withdrawn - After Issue CN203397927U (en) | 2013-07-12 | 2013-07-12 | Vacuum bubble switching mechanism and on-load tap-changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203397927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337382A (en) * | 2013-07-12 | 2013-10-02 | 广州市德百顺电气科技有限公司 | Vacuum bubble switching mechanism and on-load tap-changer |
-
2013
- 2013-07-12 CN CN201320416931.0U patent/CN203397927U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337382A (en) * | 2013-07-12 | 2013-10-02 | 广州市德百顺电气科技有限公司 | Vacuum bubble switching mechanism and on-load tap-changer |
| CN103337382B (en) * | 2013-07-12 | 2015-05-13 | 广州市德百顺电气科技有限公司 | Vacuum bubble switching mechanism and on-load tap-changer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |