CN114613639A - Transmission system of switch - Google Patents
Transmission system of switch Download PDFInfo
- Publication number
- CN114613639A CN114613639A CN202210297049.2A CN202210297049A CN114613639A CN 114613639 A CN114613639 A CN 114613639A CN 202210297049 A CN202210297049 A CN 202210297049A CN 114613639 A CN114613639 A CN 114613639A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- link
- fixed shaft
- contact
- transmission unit
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
- H01H33/50—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to the field of high-voltage switches, in particular to a transmission system of a switch, which comprises a first transmission unit, a second transmission unit, a third transmission unit, a first slideway constraint and a second slideway constraint, wherein the second transmission unit comprises a second fixed shaft, a third connecting rod, a fourth connecting rod and a fifth connecting rod; the third transmission unit comprises a third fixed shaft and an eighth connecting rod, the fourth connecting rod is rotatably connected with the eighth connecting rod, and the eighth connecting rod drives the moving arc contact to move along the slide way under the constraint action of the second slide way. The invention solves the optimization of the moving quality and speed of the dynamic rated current contact and the dynamic arc contact, designs a mechanical transmission structure, and moves the arc moving contact, the rated current moving contact and other auxiliary systems according to different set moving strokes and speeds respectively so as to meet the requirements.
Description
Technical Field
The invention relates to the field of high-voltage switches, in particular to a transmission system of a switch.
Background
The high-capacity switching device is provided with an arc contact system and a rated current contact system respectively. The arc contact system has a special material and structure that can meet the requirements of arc ablation and arc extinction. The rated current moving contact system has special material and structure meeting the requirement of long-term through-flow.
At present, most of switch equipment has no relative motion between a dynamic rated current contact and a dynamic arc contact, and is satisfied by lengthening the dynamic arc contact or the dynamic rated current contact, wherein an arc moving contact and an arc static contact are firstly conducted in a closing process, and then the two types of the arc moving contact and the arc static contact are conducted. In the process of opening the brake, the arc moving contact and the arc static contact are firstly separated, and the rated current moving contact and the rated current static contact are separated later.
The prior art has the defects that the dynamic rated current contact and the dynamic arc contact move together, and the dynamic rated current contact and the dynamic arc contact have the same stroke and the same speed. For high-capacity switch equipment, the mass of the movable rated current contact is much larger than that of the movable arc contact, and the movement speed required by the movable rated current contact is far less than that of the movable arc contact.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a transmission system of a switch, which solves the problem of optimizing the moving quality and speed of a dynamic rated current contact and a dynamic arc contact, designs a mechanical transmission structure, and moves an arc moving contact, the rated current moving contact and other auxiliary systems according to different set moving strokes and speeds respectively so as to meet the requirements.
The invention is realized by the following technical scheme:
a transmission system of a switch comprises a first transmission unit, a second transmission unit, a third transmission unit, a first slideway constraint and a second slideway constraint, wherein the first transmission unit comprises a first fixed shaft and a first connecting rod, the first fixed shaft is fixedly arranged on a support, the first fixed shaft is a power input shaft, and the first connecting rod is fixedly connected with the first fixed shaft; the second transmission unit comprises a second fixed shaft, a third connecting rod, a fourth connecting rod and a fifth connecting rod, the second fixed shaft is fixedly arranged on the support, the lengths of the fourth connecting rod and the fifth connecting rod are different, the third connecting rod, the fourth connecting rod and the fifth connecting rod are all fixedly connected with the second fixed shaft, the first connecting rod drives the third connecting rod to rotate around the center of the second fixed shaft, one end, far away from the second fixed shaft, of the fifth connecting rod is connected with a movable rated current contact, the movable rated current contact is arranged in a first slideway in a sliding mode, and the fifth connecting rod drives the movable rated current contact to move along the first slideway under the constraint effect of the first slideway; the third transmission unit comprises a third fixed shaft and an eighth connecting rod, the third fixed shaft is fixedly arranged on the support, the eighth connecting rod is rotatably connected with the third fixed shaft, the fourth connecting rod is rotatably connected with the eighth connecting rod, one end, far away from the third fixed shaft, of the eighth connecting rod is connected with the movable arc contact, the movable arc contact is slidably arranged in the second slide constraint, and the eighth connecting rod drives the movable arc contact to move along the second slide constraint under the constraint action of the second slide.
Preferably, a second connecting rod is arranged between the first connecting rod and the third connecting rod and is in rotary connection with the third connecting rod.
Preferably, a sixth connecting rod in rotary connection is arranged between the fifth connecting rod and the dynamic rated current contact.
Preferably, a seventh connecting rod is rotatably connected between the fourth connecting rod and the eighth connecting rod.
Preferably, the connection point of the seventh link and the eighth link is located at the middle part of the eighth link.
Preferably, the rotation angle of the eighth link is equal to or less than 90 °.
Preferably, one end of the eighth connecting rod, which is far away from the third fixed shaft, is connected with the moving arc contact.
Preferably, a ninth connecting rod in rotary connection is arranged between one end, far away from the third fixed shaft, of the eighth connecting rod and the moving arc contact.
Preferably, the first and second ramp constraints are both horizontal constraints.
Compared with the prior art, the invention has the following beneficial effects:
the power input from the first fixed shaft is transmitted to the third connecting rod through the first connecting rod, and the third connecting rod, the fourth connecting rod and the fifth connecting rod form a common motion unit through the second fixed shaft; meanwhile, the fourth connecting rod drives the eighth connecting rod to rotate around the third fixed shaft, and the eighth connecting rod drives the moving arc contact to move along the slide way under the constraint action of the second slide way, so that the movement of the moving rated current contact and the moving arc contact is realized.
And because the lengths of the fourth connecting rod and the fifth connecting rod are different, the horizontal linear velocities of the movable arc contact connected with the fourth connecting rod and the movable rated current contact connected with the fifth connecting rod are different, and the stroke and the speed of the movable rated current contact and the movable arc contact can be adjusted by changing the length and the angle of each connecting rod, so that the circuit breakers can be adapted to different circuit breakers.
Furthermore, the seventh connecting rod realizes the connection of the fourth connecting rod and the eighth connecting rod, and the seventh connecting rod and the fourth connecting rod can be matched to limit the rotation angle of the eighth connecting rod, so that the eighth connecting rod can only rotate around the third fixed shaft by a certain angle.
Drawings
FIG. 1 is a schematic view of a first motion position of a transmission system of a switch of the present invention;
fig. 2 is a schematic view of a second movement position of the transmission system of a switch of the present invention.
In the figure, 1, a first connecting rod; 2. a second link; 3. a third link; 4. a fourth link; 5. a fifth link; 6. a sixth link; 7. a seventh connecting rod; 8. an eighth link; 9. a ninth link; 10. a moving arc contact; 11. a dynamic rated current contact; 12. a fixed rated current contact; 13. a fixed arcing contact; a. a first fixed shaft; b. a second fixed shaft; c. and a third fixed shaft.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention discloses a transmission system of a switch, which comprises a first transmission unit, a second transmission unit, a third transmission unit, a first slideway constraint and a second slideway constraint, and the transmission system drives a movable arc contact 10 to be close to or far from a fixed arc contact 13 and simultaneously drives a movable rated current contact 11 to be close to or far from a fixed rated current contact 12, and is characterized in that the first transmission unit, the second transmission unit, the third transmission unit, the first slideway constraint and the second slideway constraint are included.
The first transmission unit comprises a first fixed shaft a and a first connecting rod 1, the first fixed shaft a is fixedly arranged on the support, the first fixed shaft a is a power input shaft, and the first connecting rod 1 is fixedly connected with the first fixed shaft a.
The second transmission unit comprises a second fixed shaft b, a third connecting rod 3, a fourth connecting rod 4 and a fifth connecting rod 5, the second fixed shaft b is fixedly arranged on the support, the third connecting rod 3, the fourth connecting rod 4 and the fifth connecting rod 5 are all fixedly connected with the second fixed shaft b, a second connecting rod 2 in rotary connection is arranged between the first connecting rod 1 and the third connecting rod 3, a sixth connecting rod 6 in rotary connection is arranged between the fifth connecting rod 5 and the movable rated current contact 11, the fifth connecting rod 5 drives the sixth connecting rod 6 to rotate, and the sixth connecting rod 6 drives the movable rated current contact 11 to move along the first slideway under the constraint action of the first slideway.
The third transmission unit comprises a third fixed shaft c and an eighth connecting rod 8, the third fixed shaft c is fixedly arranged on the support, the eighth connecting rod 8 is rotatably connected with the third fixed shaft c, a seventh connecting rod 7 which is rotatably connected is arranged between the fourth connecting rod 4 and the eighth connecting rod 8, the connecting point of the seventh connecting rod 7 and the eighth connecting rod 8 is not positioned at the end part of the eighth connecting rod 8, one end of the eighth connecting rod 8, which is far away from the third fixed shaft c, is connected with the moving arc contact 10, and a ninth connecting rod 9 is arranged between one end of the eighth connecting rod 8, which is far away from the third fixed shaft c, and the moving arc contact 10. During operation, the fourth connecting rod 4 drives the eighth connecting rod 8 to rotate around the third fixed shaft c, the eighth connecting rod 8 drives the ninth connecting rod 9 to rotate, and the ninth connecting rod 9 drives the moving arc contact 10 to move along the second slideway under the constraint action of the second slideway.
The lengths of the fourth connecting rod 4 and the fifth connecting rod 5 are different, so that the horizontal linear velocities of the seventh connecting rod 7 and the sixth connecting rod 6 which are respectively connected with the fourth connecting rod 4 and the fifth connecting rod are different, and synchronous different-speed movement of the movable rated current contact 11 and the movable arc contact 10 can be realized.
In this embodiment, the length of the fourth link 4 is greater than that of the fifth link 5, the connection point between the seventh link 7 and the eighth link 8 is located in the middle of the eighth link 8, and both the first slideway constraint and the second slideway constraint are horizontal constraints, and the power principle of the transmission system is as follows in the process of converting from the first motion position to the second motion:
the first fixed shaft a and the first connecting rod 1 form a first transmission unit, the second fixed shaft b, the third connecting rod 3, the fourth connecting rod 4 and the fifth connecting rod 5 form a second transmission unit, and the first transmission unit, the second connecting rod 2 and the second transmission unit form a four-connecting-rod movement mechanism on a spatial plane.
The first fixed shaft a rotates for a certain angle around the shaft center of the first fixed shaft a under the driving of an external force, so that the second transmission unit consisting of the second fixed shaft b, the third connecting rod 3, the fourth connecting rod 4 and the fifth connecting rod 5 is driven to rotate for a certain angle around the shaft center of the second fixed shaft b. And because the length of the fourth connecting rod 4 is greater than that of the fifth connecting rod 5, the horizontal linear speeds of the seventh connecting rod 7 and the sixth connecting rod 6 which are respectively connected with the fourth connecting rod are different.
And the fifth connecting rod 5, the sixth connecting rod 6, the dynamic rated current contact 11 and the first slideway are constrained to jointly form a slider-crank mechanism, and the dynamic rated current contact 11 is driven to move.
The moving system of the moving arc contact 10 is a complex multi-stage transmission, power is transmitted to the fourth connecting rod 4 through the first transmission unit, the fourth connecting rod 4 swings to drive the seventh connecting rod 7 to move, the seventh connecting rod 7 is connected to the middle of the eighth connecting rod 8, one end of the eighth connecting rod 8 is rotatably connected with the third fixed shaft c but can only rotate for a certain angle around the center of the third fixed shaft c, one end of the eighth connecting rod 8, which is far away from the third fixed shaft c, is connected with the ninth connecting rod 9, and the ninth connecting rod 9 drives the moving arc contact 10 to move horizontally along the second sliding constraint.
The moment of separation of the moving rated current contact 11 and the fixed rated current contact 12 is earlier than the moment of separation of the moving rated current contact 10 and the fixed arcing contact 13 when the moving rated current contact 11 and the moving arcing contact 10 move from the first position (shown in figure 1) to the second position (shown in figure 2).
When the movable rated current contact 11 and the movable arc contact 10 move from the second position to the first position, the contact time of the movable arc contact 10 and the fixed arc contact 13 is earlier than the contact time of the movable rated current contact 11 and the fixed rated current contact 12.
Claims (9)
1. A transmission system of a switch is characterized by comprising a first transmission unit, a second transmission unit, a third transmission unit, a first slideway constraint and a second slideway constraint, wherein the first transmission unit comprises a first fixed shaft (a) and a first connecting rod (1), the first fixed shaft (a) is fixedly arranged on a support, the first fixed shaft (a) is a power input shaft, and the first connecting rod (1) is fixedly connected with the first fixed shaft (a); the second transmission unit comprises a second dead axle (b), a third connecting rod (3), a fourth connecting rod (4) and a fifth connecting rod (5), the second dead axle (b) is fixedly arranged on the bracket, the lengths of the fourth connecting rod (4) and the fifth connecting rod (5) are different, the third connecting rod (3), the fourth connecting rod (4) and the fifth connecting rod (5) are all fixedly connected with the second dead axle (b), the first connecting rod (1) drives the third connecting rod (3) to rotate around the center of the second fixed shaft (b), one end of the fifth connecting rod (5) far away from the second fixed shaft (b) is connected with a dynamic rated current contact (11), the movable rated current contact (11) is arranged in a first slideway constraint in a sliding manner, and the fifth connecting rod (5) drives the movable rated current contact (11) to move along the first slideway under the constraint action of the first slideway; the third transmission unit comprises a third fixed shaft (c) and an eighth connecting rod (8), the third fixed shaft (c) is fixedly arranged on the support, the eighth connecting rod (8) is rotatably connected with the third fixed shaft (c), the fourth connecting rod (4) is rotatably connected with the eighth connecting rod (8), one end, far away from the third fixed shaft (c), of the eighth connecting rod (8) is connected with a movable arc contact (10), the movable arc contact (10) is slidably arranged in a second slide constraint, and the eighth connecting rod (8) drives the movable arc contact (10) to move along the second slide constraint under the constraint action of the second slide.
2. Transmission system of a switch according to claim 1, characterized in that a second link (2) is provided in rotational connection between the first link (1) and the third link (3).
3. Transmission system of a switch according to claim 1, characterized in that a sixth link (6) is provided in a rotary connection between the fifth link (5) and the dynamic rated current contact (11).
4. Transmission system of a switch according to claim 1, characterized in that a seventh link (7) is provided in rotational connection between the fourth link (4) and the eighth link (8).
5. The transmission system of switches according to claim 4, characterized in that the connection point of the seventh link (7) to the eighth link (8) is located in the middle of the eighth link (8).
6. Transmission system of switches according to claim 5, characterized in that the angle of rotation of the eighth link (8) is equal to or less than 90 °.
7. Transmission system of a switch according to claim 5, characterized in that the end of the eighth link (8) remote from the third fixed axis (c) is connected to a moving arcing contact (10).
8. Transmission system of a switch according to claim 6, characterized in that a ninth link (9) is provided between the end of the eighth link (8) remote from the third fixed axis (c) and the moving arcing contact (10).
9. The transmission system of switches according to claim 1, wherein the first and second slideway constraints are both horizontal constraints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210297049.2A CN114613639B (en) | 2022-03-24 | 2022-03-24 | Transmission system of switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210297049.2A CN114613639B (en) | 2022-03-24 | 2022-03-24 | Transmission system of switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114613639A true CN114613639A (en) | 2022-06-10 |
| CN114613639B CN114613639B (en) | 2023-08-15 |
Family
ID=81864312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210297049.2A Active CN114613639B (en) | 2022-03-24 | 2022-03-24 | Transmission system of switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114613639B (en) |
Citations (17)
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| DE3440857A1 (en) * | 1984-11-08 | 1986-05-15 | Siemens AG, 1000 Berlin und 8000 München | Compressed-gas circuit breaker |
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| EP0913845A1 (en) * | 1997-10-30 | 1999-05-06 | Gec Alsthom T & D Sa | Generator circuit breaker with a single mechanical control |
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| CN101587783A (en) * | 2009-06-24 | 2009-11-25 | 河南平高电气股份有限公司 | Double-action type linkage mechanism for extra-high voltage circuit breaker |
| CN102881477A (en) * | 2012-09-24 | 2013-01-16 | 中国西电电气股份有限公司 | Double glide transmission mechanism |
| WO2013087669A1 (en) * | 2011-12-14 | 2013-06-20 | Alstom Technology Ltd | Mobile conducting unit for a breaker, including a spring for accelerating the separation of arc contacts |
| US20140175061A1 (en) * | 2012-12-20 | 2014-06-26 | Abb Technology Ag | Electrical switching device with a triple motion contact arrangement |
| CN104981887A (en) * | 2013-01-24 | 2015-10-14 | 阿尔斯通技术有限公司 | Electrical apparatus with dual movement of contacts comprising a return device with two levers |
| CN205582750U (en) * | 2016-02-15 | 2016-09-14 | 天津林立感应加热电炉制造有限公司 | Trade stove switch |
| CN112614730A (en) * | 2020-12-09 | 2021-04-06 | 平高集团有限公司 | Double-acting arc extinguish chamber transmission structure |
| WO2021105259A1 (en) * | 2019-11-29 | 2021-06-03 | General Electric Technology Gmbh | Circuit breaker with simplified non-linear double motion |
-
2022
- 2022-03-24 CN CN202210297049.2A patent/CN114613639B/en active Active
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|---|---|---|---|---|
| JPS54169746U (en) * | 1978-05-22 | 1979-11-30 | ||
| DE3440857A1 (en) * | 1984-11-08 | 1986-05-15 | Siemens AG, 1000 Berlin und 8000 München | Compressed-gas circuit breaker |
| EP0822565A2 (en) * | 1996-08-01 | 1998-02-04 | AEG Energietechnik GmbH | Gas-blast switch |
| EP0913845A1 (en) * | 1997-10-30 | 1999-05-06 | Gec Alsthom T & D Sa | Generator circuit breaker with a single mechanical control |
| US6013888A (en) * | 1997-10-30 | 2000-01-11 | Gec Alsthom T & D Sa | Generator circuit breaker having a single mechanical control mechanism |
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| CN101097808A (en) * | 2006-06-23 | 2008-01-02 | 阿雷瓦T&D股份公司 | Cylindrical slot guide activation of an alternator load-break switch |
| US20080083704A1 (en) * | 2006-10-09 | 2008-04-10 | Areva T&D Sa | Actuating the contacts of an interrupting chamber in opposite directions via an insulating tube |
| EP1983538A1 (en) * | 2007-04-17 | 2008-10-22 | Areva T&D Sa | Circuit breaker with rupture chamber having double movement and inverted structure |
| CN101587783A (en) * | 2009-06-24 | 2009-11-25 | 河南平高电气股份有限公司 | Double-action type linkage mechanism for extra-high voltage circuit breaker |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114613639B (en) | 2023-08-15 |
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