CN201167032Y - Movable contact for a tap changer - Google Patents
Movable contact for a tap changer Download PDFInfo
- Publication number
- CN201167032Y CN201167032Y CNU2008200557212U CN200820055721U CN201167032Y CN 201167032 Y CN201167032 Y CN 201167032Y CN U2008200557212 U CNU2008200557212 U CN U2008200557212U CN 200820055721 U CN200820055721 U CN 200820055721U CN 201167032 Y CN201167032 Y CN 201167032Y
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- Prior art keywords
- moving contact
- flat spring
- contact
- group
- spring assembly
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Abstract
A moving contact for a tapping switch comprises a moving contact mounting plate component (200) rotating along with a main switch shaft (100), and a hold-type moving contact (300) arranged on the moving contact mounting plate component (200). The hold-type moving contact (300) is divided into two groups, namely an upper moving contact component and a lower moving contact component, which are connected with each other and form a hold-type structure; each moving contact component group comprises a moving contact group (320) and a sheet spring component (330) arranged on the moving contact group (320); each moving contact group (320) consists of a plurality of single moving contacts (321); a contact point is arranged at each of two ends of each single moving contact (321); two ends of two moving contact groups (320) hold a contact ring (500), and the other two ends hold a fixed contact (600) to enable a sheet spring (331) of the sheet spring component (330) to deform; and the counterforce of the sheet spring (331) enables the moving contact group (320) to come into contact with the contact ring (500) and the fixed contact (600) under a preset pressure so as to achieve the purpose of conducting heavy current.
Description
Technical field:
The utility model relates to the sub-connecting switch of transformer field, relates in particular to the moving contact that a kind of sub-connecting switch of transformer is used.
Background technology:
Electrical network is to high voltage, big sense of current development now, and it requires more and more higher to transformer voltage, and current requirements is increasing, and this just requires the shunting switch supporting with it also need have the ability of accepting high-voltage large current.
In the prior art, in order to increase the alive ability of contact, can 2 contacts even many again contacts be set a contact end.Because the relation of the internal stress when external force and manufacturing, tend to make that the contact that has on the more multifinger moving contact can not contact fully with fixed contact, make contact resistance very big, do not have the effect that increases the contact, and causing heating, the while is also caused the lost of life of contact.As the M type switch 1 that generally uses now, as shown in Figure 1, its contact front end promptly is provided with 2 contacts 11 and 12.
Another method that increases electric current promptly increases the contact pressure of contact with spring, but this pressure increase is limited, and the back reduces increasing the function of current because pressure is increased to a certain degree; On the other hand, excessive pressure also can be unfavorable to the switching between the contact.This class increases the employed moving contact of current methods just like the clipping moving contact 2 of existing double-contact, and as shown in Figure 2, the upper and lower contact 21,22 of the clipping moving contact 2 of this double-contact is the clamping shape, adopts cylindrically coiled spring 25 to compress.For increasing upper and lower contact 21,22 conductive capabilities, at upper and lower contact 21,22 two ends two contacts 23,24,25,26 are set all, make corresponding up and down existing 4 contacts of every end of moving contact 2, but the shunting switch maximum current also can only reach 600A like this.
Summary of the invention:
The utility model is exactly the moving contact that a kind of sub-connecting switch of transformer of proposing for the deficiency that overcomes above-mentioned prior art is used.
The technical problem that the utility model solved is achieved through the following technical solutions: the moving contact that this sub-connecting switch of transformer is used, comprise moving contact mounting panel assembly and the clipping moving contact that is arranged on the described moving contact mounting panel assembly with the switch spindle rotation, described clipping moving contact is divided into the two groups of moving contact components up and down that interconnect and become the clamping shape, every group of moving contact component comprises moving contact group and the flat spring assembly that is arranged on the moving contact group, and described flat spring assembly applies thrust to described moving contact group; Described moving contact group is made of side by side a plurality of single moving contacts, and respectively there is a contact at each single moving contact two ends.
Described moving contact component also comprises a bearing, described moving contact group and flat spring assembly are positioned at described bearing, a surface of described bearing is provided with first installing hole that is used for the installation sheet spring assembly, also be provided with corresponding second installing hole of described first installing hole at described flat spring assembly, described flat spring assembly is fixed on described the base inner surface by the securing member that passes first installing hole and second installing hole.
Described moving contact group is installed on the described bearing by a round pin that laterally runs through whole moving contact group, and described moving contact group can be done the swing of certain amplitude around described round pin.
For make the flat spring assembly implement respectively to single moving contact prop up and press down single moving contact, be provided with the sheet pawl at the two ends of described flat spring assembly, the quantity of described pawl equates with described single moving contact quantity.In order to guarantee between clamping piece spring assembly and the moving contact group insulation and to play every the heat insulation effect of magnetic, avoid burning out the flat spring assembly, on each pawl head of the sheet pawl of described flat spring assembly, be with insulating case.
Described moving contact mounting panel assembly comprises that one is installed on the switch spindle and with the moving contact runing rest of switch spindle rotation and the U-shaped bearing that is fixed on moving contact runing rest one end, described clipping moving contact is installed on the described U-shaped bearing by horizontal bearing pin.
Described flat spring assembly is formed by stacking by a plurality of flat springs, and the length of described flat spring reduces from bottom to up successively.Be provided with the sheet pawl at each flat spring two ends, the pawl number of the sheet pawl at each flat spring two ends is identical.
Owing to adopted technical scheme as above, the utility model is several single moving contacts with the moving contact component, adopt each pawl head of the sheet pawl at flat spring assembly two ends that each single moving contact is implemented to compress simultaneously, thereby guaranteed that the contact on each single moving contact all can form the excellent contact conducting with contact ring and fixed contact, has increased the ducting capacity of shunting switch.The flat spring assembly that the utility model adopts takes up room little, makes the moving contact component compact conformation, thereby also can make the compact and reasonable more of shunting switch design.The utility model can satisfy the different conduction requirement of shunting switch by changing the single moving contact quantity in the moving contact group.
Description of drawings
Double-contact moving contact structure schematic diagram in the M type switch in Fig. 1 prior art;
Fig. 2 is the clipping moving contact structure schematic diagram of prior art double-contact;
Fig. 3 is a moving contact group structural representation described in the utility model;
Fig. 4 is a flat spring modular construction schematic diagram described in the utility model;
Fig. 5 is a clipping moving contact assembly structure schematic diagram described in the utility model;
The moving contact that Fig. 6 uses for shunting switch described in the utility model is applied to the schematic diagram in the sub-connecting switch of transformer.
Embodiment
Below in conjunction with concrete the drawings and specific embodiments, further set forth the utility model.
Referring to Fig. 6, the moving contact that the sub-connecting switch of transformer of present embodiment is used comprises moving contact mounting panel assembly 200 and the clipping moving contact 300 that is arranged on the moving contact mounting panel assembly 200 with switch spindle 100 rotations.Moving contact mounting panel assembly 200 comprises a moving contact runing rest 210 and U-shaped bearing 220, and an end of moving contact runing rest 210 is fixed on the switch spindle 400, makes moving contact runing rest 210 with switch spindle 400 rotations.U-shaped bearing 220 is fixed on the other end of moving contact runing rest 210, and U-shaped bearing 220 is rotated with switch spindle 400 under the drive of moving contact runing rest 210.Clipping moving contact 300 is installed on the U-shaped bearing 220 by horizontal bearing pin 221, and clipping like this moving contact 300 also can be with switch spindle 400 rotations.
Referring to Fig. 5, clipping moving contact 300 is divided into the two groups of moving contact components up and down that interconnect and become the clamping shape, every group of moving contact component comprises bearing 310, moving contact group 320 and flat spring assembly 330, bearing 310 is a bathtub construction, the bottom land surface of bearing 310 is provided with two first installing holes 311 that are used for installation sheet spring assembly 330, the both sides trough rim respectively is provided with one in order to the cylinder pin hole 312 of moving contact group 320 to be installed, and the cylinder pin hole of wherein organizing down on the bearing 310 in the moving contact component 312 also is used to install horizontal bearing pin 221.Referring to Fig. 3, moving contact group 320 is made of side by side four single moving contacts 321 again, and each single moving contact 321 is rectangular sheet, and the centre is provided with the slotted hole 322 that laterally runs through single moving contact 321, and respectively there is a contact at two ends.Referring to Fig. 5, pass four slotted holes 322 on the single moving contact 321 with a round pin 323, just these four single moving contacts 321 can be combined in the parallel arranged mode, then the two ends of round pin 323 are penetrated in the cylinder pin hole 312 on the bearing 310 both sides trough rims, just whole moving contact group 320 can be installed in the bearing 310, such mounting means can make whole moving contact group 320 do the swing of certain amplitude around round pin 323, by cooperating with flat spring assembly 330, two groups of moving contacts 320 form a clip on function up and down.
Every group of moving contact group of present embodiment 320 adopts four single moving contacts 321, but moving contact group 320 of the present utility model is not limited to four single moving contacts 321, and conduction requirement that can also be different according to shunting switch increases and decreases the quantity of single moving contact 321.
Referring to Fig. 4, flat spring assembly 330 is formed by stacking by three flat springs 331, and the length of three flat springs 331 reduces from bottom to up successively, and promptly lowermost that sheet flat spring 331 is the longest, and middle that sheet flat spring 331 is short slightly, and topmost that sheet flat spring 331 is the shortest.The centre of each sheet flat spring 331 all has two second installing holes 332, and these two second installing holes 332 are corresponding with lip-deep two first installing holes 311 of the bottom land of bearing 310.Corresponding with four single moving contacts 321, the pawl head that the two ends of each sheet flat spring 331 are provided with 333, four sheet pawls 333 of four sheet pawls be used to prop up and press down with its for single moving contact 321.Be with insulating case 334 on the sheet pawl 333 of bottom that blocks of spring 331, insulating case 334 plays the insulation of sheet pawl 333 and every the heat insulation effect of magnetic, can avoid burning out flat spring 331.
The quantity of flat spring 331 is not limited to three in the flat spring assembly 330 of present embodiment, can increase according to needed elastic force.
Referring to Fig. 5 and Fig. 6, the installation method of above-mentioned flat spring assembly 330 is: with two securing members, pass second installing hole 332 on three flat springs 331 and lip-deep first installing hole 311 of bottom land of bearing 310 just can be fastened on three flat springs 331 on the bottom land inwall of bearing 310 with stacked system as bolt, the pawl head of sheet pawl 333 props up and presses down corresponding with it single moving contact 321, two groups of moving contact groups 320 are clamped toward middle, make two groups of moving contact groups 320 on function, be similar to clip, contact ring 500 and fixed contact 600 are clamped (referring to Fig. 6).
Referring to Fig. 6, clipping moving contact 300 is installed on the moving contact runing rest 210 by U-shaped bearing 220, one end clamping contact ring 500 of two groups of moving contact groups 320, other end clamping static contact 600, make flat spring 331 distortion in the flat spring assembly 330, and the reaction force of flat spring 331 makes each the single moving contact 321 in the moving contact group 320 contact with fixed contact 600 with contact ring 500 by the pressure of setting, to reach the purpose of the big electric current of conducting.
The moving contact that a kind of shunting switch of the utility model is used has following outstanding advantage: can improve the contact conductive capability, present embodiment can carry operating current 1000A, short circuit current 20000A, peak value 50KA.The clamping piece spring assembly that adopts takes up room little, makes the moving contact component compact conformation, thereby also can make the compact and reasonable more of shunting switch design.The utility model can satisfy the different conduction requirement of shunting switch by changing the single moving contact quantity in the moving contact group.
Claims (9)
1. moving contact that shunting switch is used, comprise with the moving contact mounting panel assembly (200) of switch spindle (100) rotation and be arranged on clipping moving contact (300) on the described moving contact mounting panel assembly (200), it is characterized in that: described clipping moving contact (300) is divided into the two groups of moving contact components up and down that interconnect and become the clamping shape, every group of moving contact component comprises moving contact group (320) and is arranged on flat spring assembly (330) on the moving contact group (320) that described flat spring assembly (330) applies thrust to described moving contact group (320); Described moving contact group (320) is made of side by side a plurality of single moving contacts (321), and respectively there is a contact at each single moving contact (321) two ends.
2. the moving contact that shunting switch according to claim 1 is used is characterized in that, described moving contact component also comprises a bearing (310), and described moving contact group (320) and flat spring assembly (330) are positioned at described bearing (310).
3. the moving contact that shunting switch according to claim 2 is used, it is characterized in that, a surface of described bearing (310) is provided with first installing hole (311) that is used for installation sheet spring assembly (330), also be provided with corresponding second installing hole of described first installing hole (311) (332) at described flat spring assembly (330), described flat spring assembly (330) is fixed on described bearing (310) inner surface by the securing member that passes first installing hole (311) and second installing hole (332).
4. the moving contact that shunting switch according to claim 2 is used, it is characterized in that, described moving contact group (320) is installed on the described bearing (310) by a round pin (323) that laterally runs through whole moving contact group (320), and described moving contact group (320) can be done the swing of certain amplitude around described round pin (323).
5. the moving contact that shunting switch according to claim 1 is used is characterized in that, is provided with sheet pawl (333) at the two ends of described flat spring assembly (330), and the quantity of described pawl (333) equates with described single moving contact (321) quantity.
6. the moving contact that shunting switch according to claim 5 is used is characterized in that, is with insulating case (334) on each pawl head of the sheet pawl (333) of described flat spring assembly (330).
7. the moving contact that shunting switch according to claim 1 is used, it is characterized in that, described moving contact mounting panel assembly (200) comprises that one is installed in that switch spindle (100) goes up and with the moving contact runing rest (210) of switch spindle (100) rotation and the U-shaped bearing (220) that is fixed on moving contact runing rest (210) one ends, described clipping moving contact (300) is installed on the described U-shaped bearing (220) by horizontal bearing pin (221).
8. the moving contact that shunting switch according to claim 1 is used is characterized in that, described flat spring assembly (330) is formed by stacking by a plurality of flat springs (331), and the length of described flat spring (331) reduces from bottom to up successively.
9. the moving contact that shunting switch according to claim 1 is used is characterized in that, is provided with sheet pawl (333) at each flat spring (331) two ends, and the pawl number of the sheet pawl (333) at each flat spring (331) two ends is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200557212U CN201167032Y (en) | 2008-02-26 | 2008-02-26 | Movable contact for a tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200557212U CN201167032Y (en) | 2008-02-26 | 2008-02-26 | Movable contact for a tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201167032Y true CN201167032Y (en) | 2008-12-17 |
Family
ID=40192423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200557212U Expired - Fee Related CN201167032Y (en) | 2008-02-26 | 2008-02-26 | Movable contact for a tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201167032Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383233B (en) * | 2008-02-26 | 2010-09-08 | 上海华明电力设备制造有限公司 | Moving contact for tap switch |
| CN108511295A (en) * | 2017-02-24 | 2018-09-07 | 上海良信电器股份有限公司 | Breaker bridge-type contact structure-improved |
-
2008
- 2008-02-26 CN CNU2008200557212U patent/CN201167032Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383233B (en) * | 2008-02-26 | 2010-09-08 | 上海华明电力设备制造有限公司 | Moving contact for tap switch |
| CN108511295A (en) * | 2017-02-24 | 2018-09-07 | 上海良信电器股份有限公司 | Breaker bridge-type contact structure-improved |
| CN108511295B (en) * | 2017-02-24 | 2020-02-21 | 上海良信电器股份有限公司 | Improved structure of bridge-type contact of circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20170226 |