CN112490035A - Rolling type mechanical contact with spring piece structure - Google Patents
Rolling type mechanical contact with spring piece structure Download PDFInfo
- Publication number
- CN112490035A CN112490035A CN202011497909.4A CN202011497909A CN112490035A CN 112490035 A CN112490035 A CN 112490035A CN 202011497909 A CN202011497909 A CN 202011497909A CN 112490035 A CN112490035 A CN 112490035A
- Authority
- CN
- China
- Prior art keywords
- contact
- feeler lever
- pressing plate
- spring
- pin
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- H01H9/0016—Contact arrangements for tap changers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- 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
- Contacts (AREA)
Abstract
The invention provides a rolling type mechanical contact with a spring piece structure, which comprises a contact mounting seat, wherein an upper contact bar and a lower contact bar are mounted in a mounting cavity in the middle of the contact mounting seat, an upper pressing plate is mounted above the upper contact bar, a lower pressing plate is mounted below the lower contact bar, the upper pressing plate and the lower pressing plate are fixed on the upper surface and the lower surface of the contact mounting seat through fixing pins, gasket mounting seats are arranged at the top ends of the upper contact bar and the lower contact bar, roller contacts are respectively mounted on the upper contact bar and the lower contact bar, a spring piece and a pressing pad are sequentially mounted on the outer sides of the roller contacts, and the pressing pad and the spring piece are sleeved on the gasket mounting seats to tightly press the roller contacts. In the switching process of the switch, the upper and lower roller contacts are contacted with the blade type contact plate and move to form rolling friction, so that the switching resistance is reduced, and the contact abrasion is reduced.
Description
Technical Field
The invention relates to the field of vacuum on-load tap changers, in particular to a rolling type mechanical contact with a spring piece structure.
Background
The on-load tap-changer is a switching device for providing constant voltage for a transformer when the load changes, and the basic principle is to realize the switching between taps in the winding of the transformer under the condition of ensuring that the load current is not interrupted, thereby changing the number of turns of the winding, namely the voltage ratio of the transformer, and finally realizing the purpose of voltage regulation.
The traditional mechanical transition contact of the on-load tap-changer adopts sliding friction, the resistance in the switching process is large, the contact is seriously abraded, and the switching effect between taps can be influenced after long-time use.
Disclosure of Invention
The invention aims to provide a rolling type mechanical contact with a spring piece structure, which forms rolling friction, thereby reducing switching resistance and reducing contact abrasion.
The technical scheme of the invention is as follows:
the utility model provides a roll formula mechanical contact with spring leaf structure, includes the contact mount pad, install feeler lever and feeler lever down in the installation cavity in the middle of the contact mount pad, install the top board in the top of last feeler lever, install the holding down plate in the below of feeler lever down, top board and holding down plate pass through the fixed pin and fix the upper surface and the lower surface at the contact mount pad, the top of going up feeler lever and feeler lever down is provided with the gasket mount pad, and roller contact is installed respectively on last feeler lever and feeler lever down, and spring leaf and pressure pad are installed in proper order in the outside of roller contact, and pressure pad and spring leaf cover are used for compressing tightly the roller contact on the gasket mount pad.
The spring contact mounting structure is characterized in that the tail ends of the upper feeler lever and the lower feeler lever are provided with bolt holes, the front ends of the upper feeler lever and the lower feeler lever are provided with connecting pin mounting grooves, the center of each connecting pin mounting groove is provided with a spring connecting hole, the center of each roller contact is provided with a shaft hole, and each roller contact is sleeved on the roller contact mounting shaft at the front ends of the upper feeler lever and the lower feeler lever through the shaft hole formed in the center.
The installation cavity body inside wall in the middle of the contact mount pad has been seted up the bolt mounting groove, is provided with the boss that supports feeler lever and feeler lever down in the installation cavity body in the middle of the contact mount pad, has seted up the fixed pin jack on the upper and lower surface of contact mount pad, go up the downthehole installation bolt of feeler lever and feeler lever down, it is downthehole that bolt is inserted to bolt one end, and the other end supports in the bolt mounting groove.
Go up feeler lever and lower feeler lever symmetry and install the upper and lower both sides at the boss, the both ends of spring pass the spring coupling hole of seting up on feeler lever and the lower feeler lever respectively and link to each other with the connecting pin, and the connecting pin is installed and is used for fixing spring both ends in the connecting pin mounting groove to it is taut through the spring to make go up feeler lever and lower feeler lever.
The upper pressing plate and the lower pressing plate are provided with through holes corresponding to the fixing pin insertion holes, and the fixing pins sequentially penetrate through the upper pressing plate, the contact mounting seat and the lower pressing plate, so that the upper contact rod and the lower contact rod are fixed in the mounting cavity in the middle of the contact mounting seat.
The tail ends of the upper feeler lever and the lower feeler lever are also correspondingly provided with supporting tables, and after the upper feeler lever and the lower feeler lever are fixed in an installation cavity in the middle of the contact installation seat, the supporting tables on the upper feeler lever and the lower feeler lever are contacted.
The upper pressing plate and the lower pressing plate are of T-shaped structures and comprise pressing cover portions and connecting portions, the connecting portions of the upper pressing plate and the lower pressing plate are respectively supported on two sides of the contact mounting seat, and the pressing cover portions of the upper pressing plate and the lower pressing plate are pressed and cover the connecting pins.
Compared with the prior art, the invention has the beneficial effects that: in the switching process of the switch, the upper roller contact and the lower roller contact are contacted with the blade type contact plate and move to form rolling friction, so that the switching resistance is reduced, and the contact abrasion is reduced. Because the roller contact needs to rotate in the movement process, the roller contact is in clearance fit with the contact rod, poor contact is caused, and therefore the spring pressing sheet is additionally arranged between the roller contact and the contact rod and is riveted, the spring pressing sheet presses the roller all the time in the rolling process of the roller, and the continuity of current is guaranteed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an exploded view of the overall structure of the present invention.
Fig. 3 is a schematic view of the upper trolley structure of the present invention.
Figure 4 is a schematic view of the contact mounting base structure of the present invention.
Fig. 5 is a schematic diagram of the structure of the lower pressing plate of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, a rolling mechanical contact with a spring plate structure includes a contact mounting base 1, an upper contact rod 2 and a lower contact rod 3 are installed in a mounting cavity in the middle of the contact mounting base 1, an upper pressing plate 4 is installed above the upper contact rod 2, a lower pressing plate 5 is installed below the lower contact rod 3, the upper pressing plate 4 and the lower pressing plate 5 are fixed on the upper surface and the lower surface of the contact mounting base 1 through fixing pins 6, a gasket mounting base 7 is arranged on the top ends of the upper contact rod 2 and the lower contact rod 3, roller contacts 8 are respectively installed on the upper contact rod 2 and the lower contact rod 3, a spring plate 9 and a pressure pad spring plate 10 are sequentially installed on the outer side of the roller contacts 8, and the pressure pad 10 and the pressure pad 9 are sleeved on the gasket mounting base 7 to compress the roller contacts 8.
The upper feeler lever 2 and the lower feeler lever 3 are symmetrically arranged at the upper side and the lower side of the boss 22, two ends of the spring 13 respectively penetrate through spring connecting holes 18 formed in the upper feeler lever 2 and the lower feeler lever 3 and are connected with the connecting pin 12, and the connecting pin 12 is arranged in the connecting pin mounting groove 17 and used for fixing two ends of the spring 13, so that the upper feeler lever 2 and the lower feeler lever 3 are tensioned through the spring 13.
The upper pressing plate 4 and the lower pressing plate 5 are provided with through holes 14 corresponding to the fixing pin insertion holes 21, and the fixing pins 6 sequentially penetrate through the upper pressing plate 4, the contact mounting seat 1 and the lower pressing plate 5, so that the upper contact rod 2 and the lower contact rod 3 are fixed in a mounting cavity in the middle of the contact mounting seat 1.
And the tail ends of the upper feeler lever 2 and the lower feeler lever 3 are also correspondingly provided with a supporting table 23, and the supporting tables 23 on the upper feeler lever 2 and the lower feeler lever 3 are contacted after the upper feeler lever 2 and the lower feeler lever 3 are fixed in an installation cavity in the middle of the contact installation seat 1.
The upper press plate 4 and the lower press plate 5 adopt a T-shaped structure, the upper press plate 4 and the lower press plate 5 comprise press cover parts 24 and connecting parts 25, the connecting parts 25 of the upper press plate 4 and the lower press plate 5 are respectively supported on two sides of the contact mounting base 1, and the press cover parts 24 of the upper press plate 4 and the lower press plate 5 are pressed and cover the connecting pins 12.
As shown in fig. 2, the upper and lower ends of the contact mounting seat are structurally symmetrical, the upper contact rod 2 and the lower contact rod 3 are mounted on the contact seat through a fixing pin and a spring, the upper pressing plate 4 and the lower pressing plate 5 are mounted on the contact seat and compress the upper contact rod 2 and the lower contact rod 3, the upper pressing plate 4 and the lower pressing plate 5 are made of spring steel plates and provide tensioning force for the contact rods together with the spring, and the fixing pin penetrates through the pressing plate and the contact mounting seat and is riveted.
At the end part of the feeler lever, a roller contact 8 is sleeved on a roller contact mounting shaft 19 at the front ends of the upper feeler lever 2 and the lower feeler lever 3 through a shaft hole 11 arranged at the center, the roller contact 8 is pressed by a spring piece 9 and a pressure pad 10, and a gasket mounting seat at the head part of the feeler lever is riveted with the roller contact after the roller contact 8 is mounted in place. In the switching process of the switch, the upper roller contact and the lower roller contact are contacted with the blade type contact plate and move to form rolling friction, so that the switching resistance is reduced, and the contact abrasion is reduced.
Because the roller contact needs to rotate in the movement process, the roller contact is in clearance fit with the contact rod, poor contact is caused, and therefore the spring pressing sheet is additionally arranged between the roller contact and the contact rod and is riveted, the spring pressing sheet presses the roller all the time in the rolling process of the roller, and the continuity of current is guaranteed.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A rolling mechanical contact with a spring piece structure is characterized by comprising a contact mounting seat (1), an upper contact rod (2) and a lower contact rod (3) are arranged in a mounting cavity in the middle of the contact mounting seat (1), an upper pressing plate (4) is arranged above the upper feeler lever (2), a lower pressing plate (5) is arranged below the lower feeler lever (3), the upper pressing plate (4) and the lower pressing plate (5) are fixed on the upper surface and the lower surface of the contact mounting seat (1) through fixing pins (6), the upper feeler lever (2) and the lower feeler lever (3) are provided with gasket mounting seats (7) at the top ends, the roller contacts (8) are respectively mounted on the upper feeler lever (2) and the lower feeler lever (3), spring pieces (9) and pressure pads (10) are sequentially mounted on the outer sides of the roller contacts (8), and the pressure pads (10) and the spring pieces (9) are sleeved on the gasket mounting seats (7) and used for compressing the roller contacts (8).
2. The rolling type mechanical contact with the spring piece structure as claimed in claim 1, wherein the tail ends of the upper feeler lever (2) and the lower feeler lever (3) are provided with pin holes (15), the front ends of the upper feeler lever (2) and the lower feeler lever (3) are provided with connecting pin mounting grooves (17), the center of each connecting pin mounting groove (17) is provided with a spring connecting hole (18), the center of the roller contact (8) is provided with a shaft hole (11), and the roller contact (8) is sleeved on the roller contact mounting shaft (19) at the front ends of the upper feeler lever (2) and the lower feeler lever (3) through the shaft hole (11) formed in the center.
3. The rolling type mechanical contact with the spring piece structure as claimed in claim 2, wherein a pin mounting groove (20) is formed in the inner side wall of a mounting cavity in the middle of the contact mounting seat (1), a boss (22) for supporting the upper contact rod (2) and the lower contact rod (3) is arranged in the mounting cavity in the middle of the contact mounting seat (1), a fixed pin jack (21) is formed in the upper surface and the lower surface of the contact mounting seat (1), a pin (16) is mounted in a pin hole (15) of the upper contact rod (2) and the lower contact rod (3), one end of the pin (16) is inserted into the pin hole (15), and the other end of the pin (16) is supported in the pin mounting groove (20).
4. The rolling type mechanical contact with the spring piece structure as claimed in claim 3, wherein the upper feeler lever (2) and the lower feeler lever (3) are symmetrically installed on the upper side and the lower side of the boss (22), two ends of the spring (13) respectively penetrate through spring connecting holes (18) formed in the upper feeler lever (2) and the lower feeler lever (3) and are connected with the connecting pin (12), and the connecting pin (12) is installed in the connecting pin installation groove (17) to fix two ends of the spring (13), so that the upper feeler lever (2) and the lower feeler lever (3) are tensioned through the spring (13).
5. The rolling type mechanical contact with the spring plate structure as claimed in claim 3, wherein the upper pressing plate (4) and the lower pressing plate (5) are provided with through holes (14) corresponding to the fixing pin insertion holes (21), and the fixing pins (6) sequentially penetrate through the upper pressing plate (4), the contact mounting seat (1) and the lower pressing plate (5), so as to fix the upper contact rod (2) and the lower contact rod (3) in the mounting cavity in the middle of the contact mounting seat (1).
6. The rolling type mechanical contact with the spring piece structure as claimed in claim 5, wherein the tail ends of the upper feeler lever (2) and the lower feeler lever (3) are further provided with a support platform (23) correspondingly, and after the upper feeler lever (2) and the lower feeler lever (3) are fixed in the mounting cavity in the middle of the contact mounting base (1), the support platforms (23) on the upper feeler lever (2) and the lower feeler lever (3) are in contact.
7. The rolling type mechanical contact with the spring plate structure is characterized in that the upper pressing plate (4) and the lower pressing plate (5) are of a T-shaped structure, the upper pressing plate (4) and the lower pressing plate (5) comprise a pressing cover portion (24) and a connecting portion (25), the connecting portion (25) of the upper pressing plate (4) and the lower pressing plate (5) is respectively supported on two sides of the contact mounting seat (1), and the pressing cover portions (24) of the upper pressing plate (4) and the lower pressing plate (5) press and cover the connecting pins (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497909.4A CN112490035B (en) | 2020-12-17 | 2020-12-17 | Rolling type mechanical contact with spring piece structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497909.4A CN112490035B (en) | 2020-12-17 | 2020-12-17 | Rolling type mechanical contact with spring piece structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112490035A true CN112490035A (en) | 2021-03-12 |
| CN112490035B CN112490035B (en) | 2024-10-15 |
Family
ID=74917525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011497909.4A Active CN112490035B (en) | 2020-12-17 | 2020-12-17 | Rolling type mechanical contact with spring piece structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112490035B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06349371A (en) * | 1993-06-08 | 1994-12-22 | Mitsubishi Electric Corp | Switch |
| CN202025656U (en) * | 2011-01-28 | 2011-11-02 | 贵州长征电力设备有限公司 | Load selector of on-load tap-changer |
| CN102436939A (en) * | 2011-09-30 | 2012-05-02 | 上海华明电力设备集团有限公司 | Rolling type contact assembly |
| CN202996615U (en) * | 2012-12-24 | 2013-06-12 | 上海华明电力设备制造有限公司 | Rolling type moving contact group of combined on-load tap-changer selector |
| CN213781858U (en) * | 2020-12-17 | 2021-07-23 | 国网湖北省电力有限公司电力科学研究院 | Rolling type mechanical contact with spring piece structure |
-
2020
- 2020-12-17 CN CN202011497909.4A patent/CN112490035B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06349371A (en) * | 1993-06-08 | 1994-12-22 | Mitsubishi Electric Corp | Switch |
| CN202025656U (en) * | 2011-01-28 | 2011-11-02 | 贵州长征电力设备有限公司 | Load selector of on-load tap-changer |
| CN102436939A (en) * | 2011-09-30 | 2012-05-02 | 上海华明电力设备集团有限公司 | Rolling type contact assembly |
| CN202996615U (en) * | 2012-12-24 | 2013-06-12 | 上海华明电力设备制造有限公司 | Rolling type moving contact group of combined on-load tap-changer selector |
| CN213781858U (en) * | 2020-12-17 | 2021-07-23 | 国网湖北省电力有限公司电力科学研究院 | Rolling type mechanical contact with spring piece structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112490035B (en) | 2024-10-15 |
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