CN108807031B - Change-over switch device applied to switching of tapping switch circuit - Google Patents
Change-over switch device applied to switching of tapping switch circuit Download PDFInfo
- Publication number
- CN108807031B CN108807031B CN201810687595.0A CN201810687595A CN108807031B CN 108807031 B CN108807031 B CN 108807031B CN 201810687595 A CN201810687595 A CN 201810687595A CN 108807031 B CN108807031 B CN 108807031B
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- China
- Prior art keywords
- box body
- shifting fork
- shifting
- movable contact
- contact bridge
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a change-over switch device applied to switching of a tapping switch circuit, which comprises a shifting fork (1), a movable contact bridge (2), fixed contacts (3), a conducting rod (4) and a box body (5), wherein one end of the box body (5) is opened, the shifting fork (1) and the movable contact bridge (2) are sequentially installed in the box body, the shifting fork (1) is close to the opening end of the box body, the shifting fork is rotatably installed in the box body, one side of the movable contact bridge (2) is in transmission fit with the shifting fork (1), the shifting fork is rotatably installed in the box body (5), the middle part of the box body (5) is provided with the conducting rod (4) crossing the box body, and two fixed contacts (3) are installed on the box body (5) at the rear part of the conducting rod (4). The invention has the advantages that: the transmission structure is simple, the requirement on the machining precision is lower, and the product quality is easy to ensure; compared with the traditional single/double-number separation circuit, 2 vacuum tubes are saved, and the cost is reduced.
Description
Technical Field
The invention relates to a change-over switch device applied to switching of a tapping switch circuit, in particular to a change-over switch device applied to a change-over circuit of a vacuum on-load tapping switch in the switching process.
Background
A vacuum on-load tap-changer (hereinafter referred to as vacuum switch) uses a vacuum tube as an on-off contact for switching operation. 2 switches are used for switching the circuit in the switching process by using 2 vacuum switches of 2 pipes for each phase. The transfer switch for the vacuum switch of 2 pipes at present is driven by a shifting fork to convert the rotary motion in the horizontal direction into the rotary motion in the vertical direction, and the movable contact is driven to rotate around a horizontal shaft to carry out on-off operation. The change-over switch has a complex structure, the driving roller drives the shifting fork rotating around the vertical shaft, the shifting fork drives the ratchet wheel arranged on the horizontal shaft, the ratchet wheel drives the moving contact to rotate around the horizontal shaft, the left fixed contact and the right fixed contact are sequentially connected, and meanwhile, the springs are respectively arranged at the upper end and the lower end of the moving contact support, and the moving contact is enabled to rotate rapidly through the action of the spherical pressing fingers in movable contact on the support. The structure ensures that the matching precision requirement and the manufacturing cost of parts are high, and the product quality is not easy to ensure.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a transfer switch device applied to the switching of a tapping switch circuit, which has the following technical scheme:
The utility model provides a be applied to change over switch device that tapping switch circuit switched, includes shift fork (1), movable contact bridge (2), fixed contact (3), conducting rod (4) and box body (5), the one end opening of box body (5) install shift fork (1) and movable contact bridge (2) in proper order in the box body, the open end of box body is close to this shift fork (1), pivoted installs in the box body, one side of movable contact bridge (2) with shift fork (1) transmission cooperation, pivoted installs in box body (5) mid-mounting of box body (5) has conducting rod (4) that cross the box body install two fixed contact (3) on conducting rod (5) at the rear portion between two fixed contact (3), and with the opposite side of movable contact bridge cooperate.
The shifting fork (1) comprises a shifting fork body (11), a first pin shaft (12), shifting fingers (14), first clamping plates (15), tail pushing springs (17) and idler wheels (16), wherein a first clamping plate is respectively arranged on the upper portion and the lower portion of the shifting fork body (11), the two first clamping plates (15) are arranged in parallel, the first pin shaft (12) penetrates through the shifting fork body (11) and the two first clamping plates (15), sliding ways (13) are arranged on the clamping plates, each shifting finger (14) is arranged between the first clamping plates and a corresponding supporting plate of the shifting fork body in a sliding mode, the idler wheels (16) are arranged at the head end of each shifting finger (14) in a rotating mode, the tail ends of the shifting fork body are connected to the shifting fork body (11) through the tail pushing springs (17), and the sliding ways (13) guide the shifting fingers (14).
The movable contact bridge (2) comprises a contact bridge (21), a second clamping plate (22), a supporting body (23), a second pin shaft (24) and a compression spring (26), wherein the second clamping plate (22) is respectively arranged at two opposite sides of the supporting body (23), the second pin shaft (24) penetrates through the supporting body (23), two contact bridges (21) are rotatably arranged on the second pin shaft in the middle space of the supporting body (23), and the two contact bridges (21) are respectively meshed on the outer peripheral surface of the conducting rod (4) all the time through the compression spring (26); semi-circular clamping grooves (25) which are in one-to-one correspondence with the rollers (15) on the shifting fork (1) are further formed in one side surface of the supporting body (23), and the rollers are placed in the semi-circular clamping grooves (25).
The box body (5) is formed by butt joint of an upper cover body and a lower cover body.
The invention has the advantages that:
1. the transmission structure is simple, the requirement on the machining precision is lower, and the product quality is easy to ensure;
2. Compared with the traditional single/double-number separation circuit, 2 vacuum tubes are saved, and the cost is reduced;
3. the shifting fork can effectively reduce the impact and the bounce of movement;
4. In the process of the engagement of the movable contact bridge and the fixed contact, sufficient power of a compression spring is provided to ensure that the circuit is tightly engaged, so that the reliable and stable circuit is ensured, and the hidden trouble of overlarge contact resistance caused by insufficient contact is solved.
5. The shifting fork and the movable contact bridge are in rolling fit with each other through the idler wheel and the semicircular clamping groove, abrasion is reduced, and the service life of the equipment is prolonged.
Drawings
Fig. 1 is a schematic diagram of the main structure of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 with the upper cover removed.
Fig. 3 is a schematic view of a structure of the fork of fig. 1.
Fig. 4 is a schematic structural diagram of the movable contact bridge in fig. 1.
Detailed Description
The invention will be further described with reference to specific embodiments, and advantages and features of the invention will become apparent from the description. These examples are merely exemplary and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present invention may be made without departing from the spirit and scope of the present invention, but these changes and substitutions fall within the scope of the present invention.
Referring to fig. 1 to 4, the invention relates to a transfer switch device applied to the circuit switching of a tapping switch, which comprises a shifting fork 1, a movable contact bridge 2, fixed contacts 3, a conducting rod 4 and a box body 5, wherein one end of the box body 5 is opened, the shifting fork 1 and the movable contact bridge 2 are sequentially installed in the box body, the shifting fork 1 is close to the opening end of the box body, the shifting fork 1 is rotatably installed in the box body 5, one side of the movable contact bridge 2 is in transmission fit with the shifting fork 1, the shifting fork 2 is rotatably installed in the box body 5, the middle part of the box body 5 is provided with the conducting rod 4 which traverses the box body, two fixed contacts 3 are installed on the box body 5 at the rear part of the conducting rod 4, a space is formed between the two fixed contacts 3, and the shifting fork is matched with the other side of the movable contact bridge.
The shifting fork 1 comprises a shifting fork body 11, a first pin shaft 12, shifting fingers 14, first clamping plates 15, tail pushing springs 17 and rollers 16, wherein a first clamping plate 15 is respectively arranged on the upper portion and the lower portion of the shifting fork body 11, the two first clamping plates 15 are arranged in parallel, the first pin shaft 12 penetrates through the shifting fork body 11 and the two first clamping plates 15, sliding ways 13 are arranged on the clamping plates, each shifting finger 14 is slidably arranged between each first clamping plate 15 and a corresponding supporting plate 18 of the shifting fork body, the head end of each shifting finger 14 is rotatably provided with a roller 16, the tail end of each shifting finger is connected to the shifting fork body (11) through the tail pushing springs 17, and the sliding ways 13 guide the shifting fingers 14.
The movable contact bridge 2 comprises a contact bridge 21, a second clamping plate 22, a supporting body 23, a second pin shaft 24 and a compression spring 26, wherein the second clamping plate 22 is respectively arranged at two opposite sides of the supporting body 23, the second pin shaft 24 penetrates through the supporting body 23, two contact bridges 21 are rotatably arranged on the second pin shaft in the middle space of the supporting body 23, and the two contact bridges 21 are respectively meshed with the outer peripheral surface of the conducting rod 4 through the compression spring 26 all the time; a semicircular clamping groove 25 corresponding to the rollers 15 on the shifting fork 1 one by one is further formed in one side surface of the supporting body 23, and the rollers are placed in the semicircular clamping groove 25.
The box body 5 is formed by butt joint of an upper cover body and a lower cover body.
The working principle of the invention is as follows: the middle part of the contact bridge 2 is always in contact with a conducting rod 4, the other end of the conducting rod is permanently connected with a circuit public end, and the other end of the conducting rod is respectively closed and separated from two fixed contacts 3 of a single-double circuit of the on-load tap-changer under the drive of a shifting fork 1 according to a mechanical time sequence. Compared with the traditional single/double-number separated circuit, 4 vacuum tubes are needed as a single/double-number switching circuit, and 2 vacuum tubes are saved through circuit conversion of the device.
Claims (3)
1. The utility model provides a change-over switch device for tapping switch circuit switches, its characterized in that includes shift fork (1), movable contact bridge (2), fixed contact (3), conducting rod (4) and box body (5), the one end opening of box body (5) install shift fork (1) and movable contact bridge (2) in proper order in the box body, this shift fork (1) is close the open end of box body, pivoted installs in the box body, one side of movable contact bridge (2) with shift fork (1) transmission cooperation, pivoted installs in box body (5), the mid-mounting of box body (5) has conducting rod (4) that crosses the box body two fixed contact (3) are installed on box body (5) at conducting rod (4) rear portion, form the interval between two fixed contact (3), and cooperate with the opposite side of movable contact bridge.
The shifting fork (1) comprises a shifting fork body (11), a first pin shaft (12), shifting fingers (14), first clamping plates (15), tail pushing springs (17) and idler wheels (16), wherein a first clamping plate is respectively arranged on the upper portion and the lower portion of the shifting fork body (11), the two first clamping plates (15) are arranged in parallel, the first pin shaft (12) penetrates through the shifting fork body (11) and the two first clamping plates (15), sliding ways (13) are arranged on the clamping plates, each shifting finger (14) is arranged between the first clamping plates and a corresponding supporting plate of the shifting fork body in a sliding mode, the idler wheels (16) are arranged at the head end of each shifting finger (14) in a rotating mode, the tail ends of the shifting fork body are connected to the shifting fork body (11) through the tail pushing springs (17), and the sliding ways (13) guide the shifting fingers (14).
2. The transfer switch device for switching tapping switch circuits according to claim 1, wherein the movable contact bridge (2) comprises a contact bridge (21), a second clamping plate (22), a supporting body (23), a second pin shaft (24) and a compression spring (26), wherein the second clamping plate (22) is respectively arranged at two opposite sides of the supporting body (23), the second pin shaft (24) penetrates through the supporting body (23), two contact bridges (21) are rotatably arranged on the second pin shaft in the middle space of the supporting body (23), and the two contact bridges (21) are respectively meshed on the outer peripheral surface of the conducting rod (4) through the compression spring (26) all the time; semi-circular clamping grooves (25) which are in one-to-one correspondence with the rollers (15) on the shifting fork (1) are further formed in one side surface of the supporting body (23), and the rollers are placed in the semi-circular clamping grooves (25).
3. A diverter switch assembly for use in tap changer circuit switching according to claim 1 or 2, wherein the housing (5) is formed by abutting an upper cover against a lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687595.0A CN108807031B (en) | 2018-06-28 | 2018-06-28 | Change-over switch device applied to switching of tapping switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687595.0A CN108807031B (en) | 2018-06-28 | 2018-06-28 | Change-over switch device applied to switching of tapping switch circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108807031A CN108807031A (en) | 2018-11-13 |
| CN108807031B true CN108807031B (en) | 2024-05-14 |
Family
ID=64071068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810687595.0A Active CN108807031B (en) | 2018-06-28 | 2018-06-28 | Change-over switch device applied to switching of tapping switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108807031B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540643B (en) * | 2020-06-05 | 2024-05-31 | 扬州市光泽环境工程有限公司 | Position switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002110436A (en) * | 2000-09-29 | 2002-04-12 | Daihen Corp | Change-over switch for on-load tap changer |
| CN102054600A (en) * | 2009-11-06 | 2011-05-11 | 贵州长征电力设备有限公司 | High-low shifting column change-over switch |
| CN103400721A (en) * | 2013-08-09 | 2013-11-20 | 贵州长征电力设备有限公司 | Split-spoon change-over switch in on-load tap-changer |
| CN203895278U (en) * | 2014-06-24 | 2014-10-22 | 昌辉汽车电器（黄山）股份公司 | Vehicle wiper switch structure |
| CN208336021U (en) * | 2018-06-28 | 2019-01-04 | 山东泰开电力设备有限公司 | A kind of transfer switch unit applied to the switching of tap switch circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005048308B3 (en) * | 2005-10-08 | 2006-11-23 | Maschinenfabrik Reinhausen Gmbh | Mechanical switch contact has pivotable contact housing mounted on insulating support via bearing with two parallel electrically connected contact fingers enclosing fixed contacts and mechanically connected to and actuated by pivot lever |
-
2018
- 2018-06-28 CN CN201810687595.0A patent/CN108807031B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002110436A (en) * | 2000-09-29 | 2002-04-12 | Daihen Corp | Change-over switch for on-load tap changer |
| CN102054600A (en) * | 2009-11-06 | 2011-05-11 | 贵州长征电力设备有限公司 | High-low shifting column change-over switch |
| CN103400721A (en) * | 2013-08-09 | 2013-11-20 | 贵州长征电力设备有限公司 | Split-spoon change-over switch in on-load tap-changer |
| CN203895278U (en) * | 2014-06-24 | 2014-10-22 | 昌辉汽车电器（黄山）股份公司 | Vehicle wiper switch structure |
| CN208336021U (en) * | 2018-06-28 | 2019-01-04 | 山东泰开电力设备有限公司 | A kind of transfer switch unit applied to the switching of tap switch circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108807031A (en) | 2018-11-13 |
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