CN104241044B - A kind of breaker in extra high voltage jointed gear unit and drive method - Google Patents
A kind of breaker in extra high voltage jointed gear unit and drive method Download PDFInfo
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- CN104241044B CN104241044B CN201410547249.4A CN201410547249A CN104241044B CN 104241044 B CN104241044 B CN 104241044B CN 201410547249 A CN201410547249 A CN 201410547249A CN 104241044 B CN104241044 B CN 104241044B
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- upper connecting
- rocking bar
- lower link
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Abstract
The present invention relates to a kind of breaker in extra high voltage jointed gear unit and control method, including joint, lower link, lower rocking bar, seal bar, the first upper connecting rod, the second upper connecting rod, the first upper rocking bar, the second upper rocking bar, the first movable contact rod and the second movable contact rod.In closing position, lower angle between rocking bar and lower link and seal bar, upper rocking bar and upper connecting rod, movable contact rod is 0 °, component is kept point-blank.In open position, lower link should be greater than 45 ° with the angle of the angle, upper connecting rod and seal bar of joint.Each component using being hinged, wherein with respective two bar point out and be hinged by rocking bar.The hydraulic cylinder of joint hydraulic system is joined directly together, and is the load input point of transmission mechanism, realizes the engagement of moving contact of breaker and arc-chutes static contact and separates.The present invention is highly reliable, and component is few, and break performance is good, efficiency high, and transmission mechanism compact conformation, makes breaker overall volume small, lightweight.
Description
Technical field
The present invention relates to a kind of driving gear of breaker and drive method, more particularly, to a kind of breaker in extra high voltage connecting rod
Transmission mechanism and drive method.
Background technology
UHV transmission is mainly used in the long distance power transmission of Large Copacity, it can reduce line corridor, reduce transmission loss,
Investment reduction and operating cost, mitigate the local pollution of the environment, improve the reliability of operation of power networks and realize the optimization of energy resources
Configuration, is the important development direction of world power grid technology with huge economic benefit and social benefit.With China's economy
Fast development, the demand for development to electric power is also constantly lifted.But because the current main electric power loading zone of China and electric power are provided
There is serious distribution inequality in source region, large-scale power engineering needs extra-high voltage grid to support so that development UHV transmission
Become very necessary and urgent.Primary cut-out is most important, most complicated electrical switchgear in power system, and it is direct
Control the operation of power network line and exit, can fast shut-off faulty line, be the pass for ensureing the operation of network system normal reliable
Button apparatus.Primary cut-out it is general by operating mechanism, transmission mechanism, cut-off the part group of element, support insulator and pedestal etc. 5
Into.The reliability of its transmission mechanism is particularly important, it is desirable to can under any working environment, line condition successfully division circuit,
There is requirement very high to device longevity, kinematic accuracy and component strength, transmission mechanism bumpy motion, move and not in place can all produce
The huge loss of life, according to statistics, all types breaker mechanical failure proportion is very high, while mechanical breakdown is often made
Into electrical malfunction.The reliability of breaker is heavily dependent on the reliability of the mechanical performance of system, i.e. driver
The reliability of tool.
The content of the invention
The present invention mainly solves the technical problem existing for prior art；There is provided one kind suffered by divide-shut brake process
Side force it is minimum, be prevented from motion process the breaker in extra high voltage jointed gear unit and drive method of clamping stagnation.
Further object of the present invention is the technical problem for solving the grade existing for prior art；There is provided a kind of part it is few,
Reliability is high, transmission efficiency, and shared space is small, and lightweight breaker in extra high voltage jointed gear unit and method.
Above-mentioned technical problem of the invention is mainly what is be addressed by following technical proposals：
Including the joint, lower link, the seal bar that are sequentially connected；And one end is connected to the lower rocking bar in the middle part of lower link；It is close
Envelope bar top is connected with the first assembly and the second component being arranged symmetrically centered on seal bar axial direction；Wherein, first assembly bag
Include the first upper connecting rod, the first upper rocking bar, the first movable contact rod being sequentially connected；Second component includes connecting on be sequentially connected second
Bar, the second upper rocking bar, the second movable contact rod；
Specifically connected mode is：
The rear end of described joint is directly joined directly together with the hydraulic cylinder of hydraulic system, behind the front end of joint and lower link
End is hinged, and the middle part of lower link is hinged with the upper end of rocking bar；The lower end of rocking bar is hinged in setting position by fixed pin shaft O, under
The upper end of connecting rod is hinged with seal bar lower end, and the upper end of seal bar is hinged with the lower end of upper connecting rod, and sliding is set in seal bar
It is secondary；
The upper end of the seal bar is hinged with the first upper connecting rod, the second upper connecting rod lower end；First upper connecting rod, the second upper connecting rod
Middle-end be hinged with the first upper rocking bar, the second upper rocking bar lower end respectively；First upper rocking bar, the second upper rocking bar upper end are respectively in setting
Position is hinged by fixed pin shaft O '；First upper connecting rod, the upper end of the second upper connecting rod are moved with the first movable contact rod, second touch respectively
One end of head rod is hinged, and is slid in the upper setting of the first movable contact rod and the second movable contact rod secondary.
A kind of breaker in extra high voltage link transmission control method based on breaker in extra high voltage jointed gear unit, its feature
It is, including combined floodgate, separating brake step, it is specific as follows：
Combined floodgate step：
In making process, joint, as the load input point of transmission mechanism, is connected by the hydraulic cylinder of hydraulic system under driving
Bar is moved, and lower link drives lower rocking bar to be rotated clockwise around fixed pin shaft O, and lower link drives seal bar to transport straight up
Dynamic, seal bar drives the first upper connecting rod, the motion of the second upper connecting rod, and the first upper connecting rod, the second upper connecting rod drive on first and shake respectively
Bar, the second upper rocking bar around fixed pin shaft O ' do clockwise, rotate counterclockwise.First upper connecting rod, the second upper connecting rod connect under driving
Plate drives the first movable contact rod, the second movable contact rod to be slided near the static contact left and right sides respectively, realizes moving contact and stationary contact
The engagement of head；
During separating brake, joint, as the load input point of transmission mechanism, is connected by the hydraulic cylinder of hydraulic system under driving
Bar is moved, and lower link drives lower rocking bar to be rotated counterclockwise around fixed pin shaft O, and lower link drives seal bar to transport straight down
Dynamic, seal bar drives the first upper connecting rod, the motion of the second upper connecting rod, and the first upper connecting rod, the second upper connecting rod drive on first and shake respectively
Bar, the second upper rocking bar around fixed pin shaft O ' do counterclockwise, rotate clockwise.First upper connecting rod, the second upper connecting rod connect under driving
Plate drives the first movable contact rod, the second movable contact rod to be slided to away from the static contact left and right sides respectively, realizes moving contact and stationary contact
The separation of head.
In a kind of above-mentioned breaker in extra high voltage link transmission controlling party based on breaker in extra high voltage jointed gear unit
At the end of method, making process, i.e., breaker in extra high voltage jointed gear unit closing position when, lower rocking bar and lower link and sealing
Bar；First upper rocking bar, the second upper rocking bar and the first upper connecting rod, the second upper connecting rod and the first movable contact rod, the second movable contact rod it
Between angle be 0 °, make its component keep point-blank.At the end of separating brake process, the angle of lower link and joint,
Seal bar should be greater than 45 ° with the first upper connecting rod, the angle of the second upper connecting rod.
Therefore, the invention has the advantages that：1st, the seal bar of breaker in extra high voltage jointed gear unit, movable contact rod exist
Side force suffered by divide-shut brake process is minimum, prevents that clamping stagnation occurs in motion process；2nd, in combined floodgate, separating brake transmission process,
The angle of lower link and joint, seal bar and the first upper connecting rod, the angular range of the second upper connecting rod tending in the range of 90 °,
So as to reach preferably transmission effect, transmission efficiency；3rd, the part shared by transmission mechanism is few, and shared space is small, makes to break
The overall volume of road device is small, lightweight and reliability is high.
Brief description of the drawings
Structural representation when accompanying drawing 1 is transmission mechanism closing position of the present invention.
Structural representation when accompanying drawing 2 is transmission mechanism open position of the present invention.
Accompanying drawing 3 is lower link force analysis schematic diagram of the present invention.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment：
Refering to shown in Fig. 1,2：The invention provides a kind of breaker in extra high voltage jointed gear unit, including joint 1, lower company
Bar 2, lower rocking bar 3, seal bar 4, the first upper connecting rod 5, the first upper connecting rod 6, the second upper rocking bar 7, the second upper rocking bar 8, first are dynamic tactile
Head rod 9, the second movable contact rod 10.
It is characterized in that there is certain symmetry using double break form, seal bar 4 and with upper member；Seal bar and with
Up to moving contact is located in the arc-chutes of extra-high breaker.Hydraulic cylinder of the rear end of described joint 1 directly with hydraulic system is straight
Connect connected, the front end of joint 1 and the rear end jointed shaft A of lower link 2, the OB ends jointed shafts B of the middle-end of lower link 2 and lower rocking bar 3；
Lower rocking bar 3 is hinged in setting position by fixed pin shaft O, lower link 2 and the lower end jointed shaft C of seal bar 4, in setting for seal bar 4
Positioning installs that sliding is secondary, the upper end of seal bar 4 respectively with the first upper connecting rod, lower end jointed shaft D, D of the second upper connecting rod ', the
One upper connecting rod 5, the middle-end of the second upper connecting rod 6 respectively with the first upper rocking bar 7, the second upper rocking bar 8 lower end jointed shaft E, F, on first
Rocking bar 7, the setting position of the second upper rocking bar 8 are hinged by fixed pin shaft O ', the first upper connecting rod 5, the upper end difference of the second upper connecting rod 6
G, H are hinged with the first movable contact rod 9, the second movable contact rod 10, it is secondary to set sliding in the setting position of movable contact rod 12,13.It is special
Primary cut-out jointed gear unit in separating brake and combined floodgate transmission process, the angle of lower link 2 and joint 1, seal bar 4 and the
One upper connecting rod 5, the angle of the second upper connecting rod 6 should be greater than 45 °, moved close in the range of 90 °.In closing position, joint
1st, lower rocking bar 3 and lower link 2 and seal bar 4；First upper rocking bar 7, the second upper rocking bar 8 and the first upper connecting rod 5, the second upper connecting rod 6
And the angle between first movable contact rod 9, the second movable contact rod 10 is 0 °, keep point-blank.In open position,
The angle of lower link 2 and joint 1；The upper connecting rod 5 of seal bar 4 and first, the angle of the second upper connecting rod 6 should be greater than 45 °.
During divide-shut brake, lower link motion and stress are analyzed：
By shown in Fig. 1,2,3：Fig. 1,2 transmission mechanisms can be regarded as by scheming (3) mechanism by series connection and and joint group
Into.Motion analysis is carried out to figure (3) below.
It is any point on lower link AC to take D points, and coordinate system is set up by origin of O.The horizontal stroke of D points, ordinate are：
X=CDcos θ1 (1)
Y=ADsin θ1 (2)
Can be obtained by formula (1), (2)：
Understand that the track for any point D on lower link is formula (3), be an elliptical orbit.Can by formula (3)
Know, when abscissa x is 0, and the movement locus of C points is straight line.
Understand that seal bar and the first movable contact rod, the second movable contact rod are received during divide-shut brake for the mechanism
Minimum side force, so as to reduce rubbed between seal bar and seal groove, the first movable contact rod, the second movable contact rod and sliding groove
Power, reduces friction work.Avoid catching phenomenon occur in transmission process, reduce the flexural deformation of movable contact rod, reduce moving contact
The end portion vibration of bar, reduces the longitudinal direction spring of movable contact rod, strengthens the reliability of transmission mechanism divide-shut brake, improves transmission mechanism
Efficiency, reach preferably transmission effect.
Quasistatic force analysis is carried out to figure (3) lower link below：
Lower link is subject to the power F of joint1, direction is as schemed shown in (3)；Lower link receives the power F of lower rocking bar, perpendicular to lower company
The direction of bar, direction are as illustrated, according to the synthesis of power, can obtain (4), (5)：
F2=F1tanθ1 (5)
Power F of the seal bar for lower link2Power as scheme (3) shown in.Understood according to formula (5), as load force F2It is fixation
When, increase θ1F can be reduced1, play labour-saving effect, thus separating brake process terminate to close a floodgate start when, lower link and joint
Angle, seal bar and the first upper connecting rod, the angle of the second upper connecting rod should be greater than 45 °.
Understood according to formula (5), at the end of making process, i.e., when separating brake process starts, θ1For 90 ° when, F1Only need pole
Small power.Therefore at the end of combined floodgate, and separating brake process starts rocking bar at present and lower link and seal bar；First upper rocking bar,
Angle between two upper rocking bars and the first upper connecting rod, the second upper connecting rod and the first movable contact rod, the second movable contact rod is 0 °, makes
Its component keeps point-blank.The transmission efficiency of mechanism is greatly improved, good labor-saving effect has been reached.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (1)
1. a kind of breaker in extra high voltage link transmission control method based on breaker in extra high voltage jointed gear unit, its feature exists
In, based on a kind of breaker in extra high voltage jointed gear unit, including joint (1), lower link (2), the seal bar being sequentially connected
(4)；And one end is connected to the lower rocking bar (3) in the middle part of lower link (2)；Seal bar (4) top is connected with seal bar (4) axially
Centered on the first assembly that is arranged symmetrically and the second component；Wherein, first assembly include be sequentially connected the first upper connecting rod (5),
First upper rocking bar (7), the first movable contact rod (9)；Second component includes the second upper connecting rod (6), the second upper rocking bar that are sequentially connected
(8), the second movable contact rod (10)；
Specifically connected mode is：
The rear end of described joint (1) is directly joined directly together with the hydraulic cylinder of hydraulic system, the front end of joint (1) and lower link
(2) rear end jointed shaft A, the OB ends jointed shafts B of the middle-end of lower link (2) and lower rocking bar (3)；Lower rocking bar (3) is in setting position
It is hinged by fixed pin shaft O, lower link (2) and seal bar (4) lower end jointed shaft C, is set in the setting position of seal bar (4) and slided
Move secondary；
The upper end of the seal bar (4) respectively with the first upper connecting rod, lower end jointed shaft D, D of the second upper connecting rod ', the first upper connecting rod
(5), the middle-end of the second upper connecting rod (6) respectively with the first upper rocking bar (7), the second upper rocking bar (8), lower end jointed shaft E, F, on first
Rocking bar (7), the second upper rocking bar (8) setting position be hinged by fixed pin shaft O ', the first upper connecting rod (5), the second upper connecting rod (6)
Upper end is hinged G, H with the first movable contact rod (9), the second movable contact rod (10) respectively, in the setting position of movable contact rod (9), (10)
Install sliding secondary；
Including combined floodgate, separating brake step；
During divide-shut brake, lower link motion and stress are analyzed：
It is any point on lower link AC to take D points, and coordinate system is set up by origin of O；The horizontal stroke of D points, ordinate are：
X=CDcos θ1 (1)
Y=ADsin θ1 (2)
θ1Represent lower link (2) and horizontal direction angle；
Can be obtained by formula (1), (2)：
Understand that the track for any point D on lower link is formula (3), be an elliptical orbit；By formula (3),
When abscissa x is 0, the movement locus of C points is straight line；
Understood for the mechanism, seal bar and the first movable contact rod, the second movable contact rod are subject to minimum during divide-shut brake
Side force, so as to reduce frictional force between seal bar and seal groove, the first movable contact rod, the second movable contact rod and sliding groove,
Reduce friction work；Avoid catching phenomenon occur in transmission process, reduce the flexural deformation of movable contact rod, reduce movable contact rod
End portion vibration, reduces the longitudinal direction spring of movable contact rod；
Quasistatic force analysis is carried out to lower link below：F1The horizontal actuator force of hydraulic cylinder is represented, lower link receives lower rocking bar
Power F, perpendicular to the direction of lower link, according to the synthesis of power, can obtain (4), (5)：
F2=F1tanθ1 (5)
Power F of the seal bar for lower link2Power；Understood according to formula (5), as load force F2During to fix, increase θ1Can subtract
Small F1, therefore separating brake process terminate to close a floodgate start when, the angle of lower link and joint, seal bar and the first upper connecting rod, the
The angle of two upper connecting rods should be greater than 45 °；
Understood according to formula (5), at the end of making process, i.e., when separating brake process starts, θ1For 90 ° when, F1Only need minimum
Power；Therefore at the end of combined floodgate, and the angle that separating brake process starts at present between rocking bar and lower link and seal bar is 0 °；First
Angle between upper rocking bar, the second upper rocking bar and the first upper connecting rod, the second upper connecting rod and the first movable contact rod, the second movable contact rod
It is 0 °；
Specifically include：
Combined floodgate step：
In making process, joint (1), as the load input point of transmission mechanism, drives lower link by the hydraulic cylinder of hydraulic system
(2) move, lower link (2) drives lower rocking bar (3) to be rotated clockwise around fixed pin shaft O, and lower link (2) drives seal bar
(4) move straight up, seal bar (4) drives the first upper connecting rod (5), the second upper connecting rod motion (6), the first upper connecting rod (5) to drive
Dynamic first upper rocking bar (7) is rotated clockwise around fixed pin shaft O '；Second upper connecting rod (6) drive the second upper rocking bar (8) around
Fixed pin shaft O ' is rotated counterclockwise；First upper connecting rod (5), the second upper connecting rod (6) drive lower plate to drive the first movable contact rod
(9), the second movable contact rod (10) is slided near the static contact left and right sides respectively, realizes the engagement of moving contact and static contact；
Separating brake step：
During separating brake, joint (1), as the load input point of transmission mechanism, drives lower link by the hydraulic cylinder of hydraulic system
(2) move, lower link (2) drives lower rocking bar (3) to be rotated counterclockwise around fixed pin shaft O, and lower link (2) drives seal bar
(4) move straight down, seal bar (4) drives the first upper connecting rod (5), the second upper connecting rod (6) motion, the first upper connecting rod (5) is driven
Dynamic first upper rocking bar (7) is rotated clockwise around steady pin week O '；Second upper connecting rod (6) drive the second upper rocking bar (8) around
Steady pin week, O ' was rotated counterclockwise；First upper connecting rod (5), the second upper connecting rod (6) drive lower plate to drive the first movable contact rod
(9), the second movable contact rod (10) is slided to away from the static contact left and right sides respectively, realizes that moving contact is separated with static contact；
At the end of making process, i.e., breaker in extra high voltage jointed gear unit closing position when, lower link (2) and lower rocking bar (3)
And seal bar (4)；First upper connecting rod (5), the second upper connecting rod (6) are dynamic with the first upper rocking bar (7), the second upper rocking bar (8) and first
Angle between contact stem (9), the second movable contact rod (10) is 0 °；At the end of separating brake process, joint (1) and lower link
(2) angle, seal bar (4) should be greater than 45 ° with the first upper connecting rod (5), the angle of the second upper connecting rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547249.4A CN104241044B (en) | 2014-10-15 | 2014-10-15 | A kind of breaker in extra high voltage jointed gear unit and drive method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547249.4A CN104241044B (en) | 2014-10-15 | 2014-10-15 | A kind of breaker in extra high voltage jointed gear unit and drive method |
Publications (2)
| Publication Number | Publication Date |
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| CN104241044A CN104241044A (en) | 2014-12-24 |
| CN104241044B true CN104241044B (en) | 2017-06-27 |
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| CN201410547249.4A Active CN104241044B (en) | 2014-10-15 | 2014-10-15 | A kind of breaker in extra high voltage jointed gear unit and drive method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105405712B (en) * | 2015-12-03 | 2018-06-08 | 平高集团有限公司 | A kind of transmission mechanism of breaker and transmission case and transmission case |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1820877A (en) * | 1927-07-01 | 1931-08-25 | Joseph D Wood | Electric switch |
| DE7714923U1 (en) * | 1977-05-11 | 1977-09-01 | Ellenberger & Poensgen Gmbh, 8503 Altdorf | Overcurrent protection switch with on and off rocker switch |
| JP2583491B2 (en) * | 1986-08-07 | 1997-02-19 | 三菱電機株式会社 | Circuit breakers and breakers |
| JP2007087836A (en) * | 2005-09-26 | 2007-04-05 | Hitachi Ltd | Gas-blast circuit breaker for electric power |
| CN101587795B (en) * | 2009-07-01 | 2011-09-21 | 河南平高电气股份有限公司 | Circuit breaker and a system having the circuit breaker |
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