CN104704592B - Switch transmission mechanism and power switch - Google Patents
Switch transmission mechanism and power switch Download PDFInfo
- Publication number
- CN104704592B CN104704592B CN201380051692.6A CN201380051692A CN104704592B CN 104704592 B CN104704592 B CN 104704592B CN 201380051692 A CN201380051692 A CN 201380051692A CN 104704592 B CN104704592 B CN 104704592B
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- China
- Prior art keywords
- switch
- fixed plate
- drive
- chute
- gathering sill
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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
- H01H33/42—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
-
- 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
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
Abstract
Provided are a switch transmission mechanism and a power switch. The switch transmission mechanism comprises a push rod for connecting to a first contact member, a connection rod for connecting to a second arcing contact, a driving-side mechanism and a driven-side mechanism. A fixed plate is provided thereon with a first fixed plate guide groove for the push rod to slide therein, a second fixed plate guide groove for the connection rod to slide therein and a fixed plate sliding groove. One end of the fixed plate sliding groove is adjacent to the first fixed plate guide groove, and the other end thereof extends to the direction of the second fixed plate guide groove and exceeds the second fixed plate guide groove by a part. The driving-side mechanism comprises a driving rod, a driving pin and a driving arm; the driving arm is provided thereon with a driving arm sliding groove and can rotate about a fixed shaft fixed on the fixed plate; one end of the driving rod is hinged with the push rod via a rotary hinge, and the other end thereof fixes the driving pin; and the driving pin can slide along the driving arm sliding groove and the fixed plate sliding groove. The switch transmission mechanism of the present invention has small space occupation, and the motion curve of an arcing contact can satisfy the requirements of electric current ON/OFF well.
Description
Technical field
The present invention relates to a kind of power switch that there is heterodromous switch drive and there is the transmission of this switch.
Background technology
Power switch includes the first contact and the second contact.First contact can be with second under driving means drive
Contact connects or separates, and realizes combined floodgate and the separating brake of switch.In operation, the first contact will by a drive mechanism
Motion passes to the second contact so as to move with the direction contrary with the first contact.Moved by this opposite way, energy
Make contact realize high separating rate, reduce the operating work of driving means simultaneously.
For example, document ep 0809269 discloses a kind of high-voltage electrical apparatus switch, it include two coaxial, can relative movement
Arcing contact.Two arm bars that can rotate around fixing axle are driven by the drive rod being fixed on insulation nozzle, thus driving
Arcing contact does adverse movement.If this high-voltage electrical apparatus switch switching manipulation stroke is larger, lever actuated end can be very long, takes up room
Larger, and reverse arcing contact curve movement is more single.
Document cn1357901a discloses a kind of electric switch, and it includes two arcing contacts that can move backward.By solid
The drive rod being scheduled on insulation nozzle carrys out activation lever and rotates around fixing axle, and the slave arm of lever is designed to cam, by cam band
Dynamic two arcing contacts do adverse movement., when switching manipulation stroke is larger, lever actuated end can be very long for this electric switch, takies relatively
Large space.
Document ep 0822565 discloses a kind of electric switch, and it includes two contacts that can move backward.This two are touched
Head is coupled with leverage by insulation nozzle, comes activation lever mechanism by the drive rod on insulation nozzle, thus realizing two
The adverse movement of arcing contact.If this electric switch switching manipulation stroke is larger, lever actuated end can be very long, takes up room relatively
Greatly, and reverse arcing contact curve movement is more single.
Document cn1128892a discloses a kind of electric switch, and it includes two relatively-movable arcing contacts.By solid
The ratch being scheduled on insulation nozzle comes driving gear tooth bar mechanism or geared linkage mechanism, thus driving two arcing contacts to do relatively
Motion.This electric switch arcing contact curve movement is more single, and is driven smaller.
Document cn101548351a discloses a kind of actuating device for electrical circuit breakers, to realize the anti-of two arcing contacts
To motion.Drive rod and a rod hinge connection, this connecting rod passes through the actuating arm of sliding hinge-coupled two arm bar, and this two arm bar can
Rotate around fixing axle, the slave arm of lever passes through connecting rod or rack-and-pinion is connected with arcing contact.During operation, drive the end link can be
Slide on lever.This actuating device reverse arcing contact curve movement is more single.
Document cn101202175a discloses a kind of has the power switch with dead point drive mechanism.Drive mechanism drive rod
It is fixed on insulation nozzle, drive rod and a rod hinge connection, the actuating arm of this connecting rod and two arm bars that can rotate around fixing axle
Hinged, the slave arm of lever is coupled with arcing contact by connecting rod, and wherein drive mechanism has first dead center.This power switch is subject to even
Bar and lever length constraint, reverse arcing contact curve movement adjustment is inconvenient.
In sum, in existing switch, can achieve the relative motion (moving reversely or in the same direction) of two arcing contacts, but this
A little switch in drive mechanism mostly need to take larger space, the size of impact arc-chutes or chopper, especially perpendicular to
The lateral dimension of the direction of motion, when the operational stroke of switch is larger, this is particularly problematic.In addition, traditional power switch
In, the curve movement of arcing contact usually unsatisfactory it is impossible to meet the needs that electric current cut-offs well.
Content of the invention
It is an object of the present invention to solving above-mentioned the problems of the prior art, provide a kind of little switch that takes up room
Drive mechanism；
It is a further object of the invention to provide a kind of power switch of the drive mechanism with the present invention.
For achieving the above object, the present invention adopts the following technical scheme that
The switch drive of the present invention, for switching.Including the push rod for connecting the first contact, for connection the
Driving side mechanism that the connecting rod of the second arcing contact of two contacts is connected with described push rod and by described driving side mechanism
Motion is transferred to the slave end mechanism of described connecting rod.Wherein, described switch drive also includes fixed plate.Described fixed plate
It is provided with for described push rod the first fixed plate gathering sill sliding in it, the second fixation slided in it for described connecting rod
Plate gathering sill and fixed plate chute.The one end of described fixed plate chute is adjacent to described first fixed plate gathering sill, the other end
Portion extends to described second fixed plate gathering sill direction and exceeds a described second fixed plate gathering sill part.Described driving side machine
Structure includes drive rod, drive pin and actuating arm, and described actuating arm is provided with actuating arm chute, and can be around being fixed on described fixed plate
The actuating arm that rotates of fixing axle, it is hinged with described push rod that rotary gemel is passed through in one end of described drive rod, the fixing institute of the other end
State drive pin, described drive pin can be along described actuating arm chute and described fixed plate slide.
In an embodiment of the present invention, described slave end mechanism includes follower lever and slave arm, one end of described slave arm
It is fixed on described actuating arm, the other end connects one end of described follower lever by rotary gemel, the other end of described follower lever leads to
Cross rotary gemel hinged with described connecting rod.
In an embodiment of the present invention, described first fixed plate gathering sill is mutually flat with described second fixed plate gathering sill
OK.
In an embodiment of the present invention, the centrage of described second fixed plate gathering sill and switch axis are in same straight line
On.
In an embodiment of the present invention, described fixing axle is fixed on the centrage of described second fixed plate gathering sill.
In an embodiment of the present invention, described fixed plate chute is a straight trough or arcuate groove.
In an embodiment of the present invention, described fixed plate chute includes the first fixed plate straight trough of being sequentially connected of head and the tail and extremely
Few one section of arc groove, and each section of groove is rounding off connection.
In an embodiment of the present invention, described fixed plate chute also includes being connected to the second of the last section of arc groove and fixes
Plate straight trough.
In an embodiment of the present invention, described second fixed plate straight trough is parallel to described first fixed plate gathering sill.
In an embodiment of the present invention, fixed plate chute is near-end adjacent to one end of described first fixed plate gathering sill, far
It is far-end from the other end of described first fixed plate gathering sill, the centrage at the center of described fixing axle to described fixed plate chute
The change of the air line distance between upper each point turns to: become big from large to small again by described distal-to-proximal described air line distance, and away from
From far-end air line distance be more than with a distance from near-end 1.3 times of air line distance.
In an embodiment of the present invention, described actuating arm chute is a straight trough or an arcuate groove.
In an embodiment of the present invention, described actuating arm chute includes the first actuating arm straight trough and the second actuating arm straight trough,
Therebetween become a first angle, this first angle is 120 ° -180 °.
In an embodiment of the present invention, described actuating arm and slave arm are structure as a whole, or Split type structure fixation
Link together.
In an embodiment of the present invention, the centrage of described actuating arm becomes one second jiao with the centrage of described slave arm
Degree, described second angle is 90 ° -180 °.
In an embodiment of the present invention, described second angle is 120 ° -170 °.
In an embodiment of the present invention, the length of described follower lever and the length ratio of described slave arm are 3:1.
In an embodiment of the present invention, the length of described follower lever and the length ratio of described slave arm are 2:1.
In an embodiment of the present invention, the length of described follower lever and the length ratio of described slave arm are 3:2.
In an embodiment of the present invention, the length of described drive rod is the 20%～80% of switching manipulation stroke.
In an embodiment of the present invention, the length of described drive rod is the 30%～70% of switching manipulation stroke.
In an embodiment of the present invention, the length of described drive rod is the 40%～60% of switching manipulation stroke.
In an embodiment of the present invention, under described switch "on" position, actuating arm chute and fixed plate chute have part
Overlap, form overlapping region.
In an embodiment of the present invention, described overlapping region is formed at one end of described actuating arm chute and fixed plate chute
Portion.
In an embodiment of the present invention, described overlapping region is minimum effective to described first fixed plate guide slot centerlines
Distance is (l1), maximum effective distance for the relation between (l2) and the effective length (m) of described drive rod is: l1 < m < l2.
In an embodiment of the present invention, described overlapping region is minimum effective to described first fixed plate guide slot centerlines
Distance for the relation between (l1) and the effective length (m) of described drive rod is: l1 >=0.7m.
In an embodiment of the present invention, described overlapping region is minimum effective to described first fixed plate guide slot centerlines
Distance for the relation between (l1) and the effective length (m) of described drive rod is: l1 >=0.8m.
In an embodiment of the present invention, described overlapping region is minimum effective to described first fixed plate guide slot centerlines
Distance for the relation between (l1) and the effective length (m) of described drive rod is: l1 >=0.9m.
In an embodiment of the present invention, described slave end mechanism includes one end and is fixed on the slave arm of described actuating arm and solid
Due to the follower pin of described slave arm the other end, described connecting rod is provided with connecting rod chute, and described follower pin stretches into described
Connecting rod chute simultaneously can be along described connecting rod slide, thus the rotation of described slave arm is transformed into the straight line of connecting rod
Motion.
In an embodiment of the present invention, described connecting rod chute is in " one " font.
In an embodiment of the present invention, the longitudinal centre line of described connecting rod chute is perpendicular to described second fixed plate guiding
The centrage of groove.
In an embodiment of the present invention, described slave end mechanism include located at described connecting rod tooth bar and can be with described drive
The follower disk that swing arm rotates, the outward flange of described follower disk is provided with can be with several teeth of described tooth bar cooperation, if by described
Do the linear motion engaging cooperation, the rotation of described actuating arm being converted into described connecting rod of a tooth and described tooth bar.
In an embodiment of the present invention, the outward flange of described follower disk is arc.
The power switch of the present invention, including housing, the first contact in described housing, has the second arcing contact
Second contact and switch drive.Described first contact and the second contact under driving means effect can in conjunction with or
Separate and realize the switch closing and switch opening of described power switch.Wherein said switch drive is switch transmission of the present invention
Mechanism.
In an embodiment of the present invention, described second contact also includes the second main contact.
In an embodiment of the present invention, described second main contact is connected to described connecting rod.
As shown from the above technical solution, the advantage of switch drive of the present invention and power switch and having the active effect that
Fixed plate is provided with the fixed plate chute sliding for drive pin, and a part for fixed plate chute is located at the first fixed plate gathering sill
With second between fixed plate gathering sill, another part outwards exceeds the second fixed plate gathering sill so that push rod is indispensable big
In the case of range of movement, drive mechanism can keep the less lateral dimension perpendicular to pushrod movement direction, and therefore, the present invention accounts for
Little with space.Further, actuating arm chute and fixed plate chute partially overlap and form overlapping region, make the second contact
In the starting stage remains stationary of switch sub-switching operation, reduce the moving-mass of separating brake initial period, reduce two contacts
Abrasion between part, and be conducive to accelerating driving means speed-raising.
By description of a preferred embodiment referring to the drawings in the present invention, the above-mentioned and other purpose of the present invention,
Feature and advantage will be apparent from.
Brief description
Fig. 1 a is the structural representation of the switch drive first embodiment of the present invention；
Fig. 1 b is the part-structure schematic diagram of the switch drive first embodiment of the present invention, has wherein removed driving
Bar, to illustrate overlapping region to coverage l1, l2 of the first fixed plate guide slot centerlines；
Fig. 2 a to Fig. 2 g represents the structural representation of the sub-switching operation process of the switch drive first embodiment of the present invention
Figure；
Fig. 3 a represents the displacement curve of switch drive first embodiment separating brake process push rod and the connecting rod of the present invention
Displacement curve；
Fig. 3 b represents the rate curve of switch drive first embodiment separating brake process push rod and the connecting rod of the present invention
Rate curve；
Fig. 4 is the structural representation of the switch drive second embodiment of the present invention；
Fig. 5 is the structural representation of the switch drive 3rd embodiment of the present invention.
Specific embodiment
The specific embodiment of the present invention is described more fully below.It should be noted that the embodiments described herein is served only for illustrating
Illustrate, be not limited to the present invention.
In the embodiment of the present invention, the first contact carries the first arcing contact, and the second contact carries the second arcing contact, but not
As limit, in some other embodiment, for example, it is applied in the devices such as other choppers in addition to power switch, first
Contact, the second contact should broadly understood, and the such as first contact can also be simultaneous with the first main contact, the second contact
Part carries the second main contact.
Switch drive embodiment 1
As shown in figure 1, in the switch drive embodiment of the present invention, including fixed plate 30, for connecting the first contact
Driving side mechanism that the push rod 10 of part, connecting rod 20 are connected with push rod 10 and be transferred to connect by the motion of driving side mechanism
The slave end mechanism of bar 20.
Fixed plate 30 is provided with the first fixed plate gathering sill 31 being parallel to each other and the second fixed plate gathering sill 32, Yi Jigu
Fixed board chute 33.The one end of fixed plate chute 33 is led to the second fixed plate adjacent to the first fixed plate gathering sill 31, the other end
Extend and exceed the second fixed plate gathering sill 32 part to groove 32 direction, as shown in figure 1, fixed plate chute 33 is by lower left
Upper right side tilts to extend.That is, in the present embodiment, a part for fixed plate chute 33 is located at the first fixed plate gathering sill 31
With second between fixed plate gathering sill 32, another part outwards exceeds the second fixed plate gathering sill 32.Second fixed plate gathering sill
32 centrage and switch axis are on same straight line.
Driving side mechanism includes drive rod 11, drive pin 12 and actuating arm 24.Rotary gemel is passed through in one end of drive rod 11
Hinged with push rod 10, other end fixed drive pin 12.Actuating arm 24 can rotate around fixing axle 23, and fixing axle 23 is fixed on fixed plate
On 30.As needed, fixing axle 23 is securable on the centrage of the second fixed plate gathering sill 32 or in centrage both sides.Fixing
The axis of axle 23 and the central axis of the second fixed plate gathering sill 32, that is, fixing axle 23 axis is vertical with switch axis.Drive
Actuating arm chute 25 is had on arm 24.Drive pin 12 can slide along actuating arm chute 25 and fixed plate chute 33.Close a floodgate in switch
Under state, actuating arm chute 25 and fixed plate chute 33 have part to overlap, and form overlapping region 36.If overlapping region 36 is arrived
The minimum coverage of the first fixed plate gathering sill 31 centrage is l1, overlapping region the 36 to the first fixed plate gathering sill 31 center
The maximum effective distance of line is l2, then the relation between length m of l1, l2 and drive rod 11 should meet l1 < m < l2.L1 and m it
Ratio should be not less than 0.9:1, also can be not less than 0.8:1, even not less than 0.7:1.Wherein overlapping region 36 to the first fixed plate is led
It is defined as follows to the minimum coverage l1 of groove 31 centrage and maximum effective distance l2: under switch "on" position, allow drive
Dynamic pin 12 slides under the constraint being not driven bar 11 in overlapping region 36, the maximum magnitude that can reach in drive pin 12
Interior, the minimum range of drive pin 12 centrage to the first fixed plate gathering sill 31 centrage is l1, and ultimate range is l2.
Overlapping region 36 corresponds to the initial stage (switching the latter stage of closing operation) of switch sub-switching operation.Heavy by arranging this
Close region 36, the second arcing contact is in the incipient stage remains stationary of sub-switching operation, thus reducing the motion of separating brake initial period
Quality, accelerates driving means speed-raising process.Meanwhile, switch the initial stage of sub-switching operation, arcing contact not yet separates；Switch closing operation
Latter stage, arcing contact contacted.Within this two time periods, two contacts are preferably made to move with relatively low relative velocity,
To reduce the abrasion between contact.By the setting of above-mentioned overlapping region 36, can be by the abrasion between arcing contact in this two time periods
It is minimized.The chute shape of this overlapping region may be designed as arc groove, straight trough etc., preferably straight trough.
In switch drive first embodiment, slave end mechanism includes follower lever 21 and slave arm 22.Slave arm 22
Actuating arm 24 is fixed in one end, and the other end connects one end of follower lever 21 by rotary gemel, and the other end of follower lever 21 passes through
Rotary gemel is hinged with connecting rod 20, and the other end of connecting rod 20 is used for connecting the second arcing contact (not shown).Connecting rod
20 can slide along the second fixed plate gathering sill 32, slide along switch axis direction.Actuating arm 24 is permissible with slave arm 22
It is that the mode such as welded is fixed together again for integrative-structure or Split type structure.Actuating arm 24 and slave arm 22 shape
Become lever construction, fixing axle 23 can be located at the junction of actuating arm 24 and slave arm 22.
Follower lever 21 is preferably a straight-bar, is certainly not limited.Drive rod 11 be preferably a straight-bar, certainly not with
This is limited.Length m of drive rod 11 is the 40%～60% about of switching manipulation stroke, and it can be switching manipulation stroke
30%～70%, or even 20%～80%.One end of drive rod 11 pass through rotary gemel hinged with push rod 10, push rod 10 another
End is fixedly connected with the first contact, and push rod 10 can drive lower edge the first fixed plate gathering sill 31 to slide in the first contact.
The other end of drive rod 11 is fixed with drive pin 12, and drive pin 12 is arranged in fixed plate chute 33 or runs through fixed plate chute
33, and run through actuating arm chute 25 simultaneously.Drive pin 12 can slide in fixed plate chute 33 and actuating arm chute 25 simultaneously, from
And promote actuating arm 24 to rotate around fixing axle 23, being further driven to connecting rod 20 moves along the second fixed plate gathering sill 32, simultaneously
Drive the second arcing contact motion.Because connecting rod 20 is fixedly connected with the second arcing contact, push rod 10 and the first contact are fixing even
Connect, so the speed ratio of connecting rod 20 and push rod 10 is the gear ratio of this drive mechanism.
Actuating arm chute 25 can be a straight trough or arcuate groove.In one embodiment, actuating arm chute 25 is by two sections of straight troughs
Intersect and form, that is, actuating arm chute 25 includes the first actuating arm straight trough 251 and the second actuating arm straight trough 252, become therebetween one
First angle γ, first angle γ is 120 ° -180 °.And first actuating arm straight trough 251 and the second actuating arm straight trough 252 intersecting
Place seamlessly transitted by circular arc so that drive pin 12 along actuating arm chute 25 slide when resistance less.
Along fixed plate chute 33 sliding, the shape of therefore fixed plate chute 33 defines the cunning of drive pin 12 to drive pin 12
Row track.Fixed plate chute 33 can generally one straight trough or arcuate groove.Preferably, fixed plate chute 33 is straight trough and arc groove
Combination, circular arc slot part is two sections of tangent arc grooves compositions, seamlessly transits, the chute of overlapping region is between each section of chute
Straight trough.In a preferred embodiment, fixed plate chute 33 includes the first fixed plate straight trough 331 and the first circle that head and the tail are sequentially connected
It is connected smoothly between arc groove 332, the second arc groove 333, and each section of chute, the tangent line of the second arc groove 333 end and
One fixed plate gathering sill 31 is parallel.The fixed plate chute 33 being so designed that, enables the curve movement of arcing contact preferably to meet electricity
The needs that stream cut-offs.Now, overlapping region 36 is by the first actuating arm straight trough 251 in actuating arm chute 25 and fixed plate chute 33
In the first fixed plate straight trough 331 overlap and formed.
Further, fixed plate chute 33 also includes the second straight trough 334 being connected to the second arc groove 333, the second straight trough
334 extend along the tangential direction of the second arc groove 333 end, and the second straight trough 334 leads adjacent and parallel to the first fixed plate
To groove 31.First straight trough 331 is located at the top of fixed plate 30, and is located above the second fixed plate gathering sill 32.As needed, Gu
Circular arc slot part in fixed board chute 33 can be only one section, also tangentially can be formed by connecting by more multistage, and each section of circular arc
The order of placement of groove and position also can change, and the straight trough of neighbouring first fixed plate gathering sill 31 also can be cancelled as needed or change
Angle of inclination.
Along fixed plate chute 33, in the position nearer apart from actuating arm rotary shaft 23, the rotational angular velocity of actuating arm 24
Bigger, be more conducive to improving the gear ratio of drive mechanism；Meanwhile, the driving force that drive mechanism needs is also bigger.Fixed plate chute
33 is near-end adjacent to one end of described first fixed plate gathering sill 31, and the other end away from described first fixed plate gathering sill 31 is
Far-end, the change of the center of described fixing axle 23 air line distance between each point on the centrage of described fixed plate chute 33
For: become big from large to small again by described distal-to-proximal described air line distance, and the air line distance apart from far-end is more than distance closely
1.3 times of the air line distance at end.In this way, the rotational angular velocity making actuating arm 24 changes from small to big and diminishes, thus obtaining again
The gear ratio being more suitable for.
Follower lever 21 should control in certain limit with the length ratio of slave arm 22.If follower lever 21 is very long, slave arm
22 is very short, then the maximum output speed of drive mechanism is less than meeting；If follower lever 21 and the similar length of slave arm 22, pass
The maximum output speed ratio of motivation structure is larger, but the resistance to sliding being simultaneously connected with bar 20 increases, the heavy load of drive mechanism.This
In invention, the length ratio of follower lever 21 and slave arm 22 is designed as 1.5 about, this ratio is not limited certainly, considers
The length ratio of follower lever 21 and slave arm 22 can be designed as by the factors such as the overall dimension of switch, operational stroke, divide-shut brake speed
1～2, or even be designed as being all feasible in the range of 1～3.
In addition, the centrage of actuating arm 24 becomes second angle θ with the centrage of slave arm 22, adjust this second angle θ
Drive mechanism maximum output speed can be changed goes out current moment.When this second angle θ is less, then drive mechanism maximum velocity ratio
Go out current moment more early.When this second angle θ is larger, then to go out current moment later for drive mechanism maximum velocity ratio.This second angle θ can
Think 90 ° -180 °, preferably 120 ° -170 °, in embodiment, actuating arm and the angle of bend of slave arm are 150 ° about.
The centrage of the first fixed plate gathering sill 31 is little with the distance between the centrage of the second fixed plate gathering sill 32 d1
In the length of drive rod 11, the one end away from the first fixed plate gathering sill 31 of fixed plate chute 33 guides to the first fixed plate
The vertical length being more than drive rod 11 away from d2 of groove 31.In switch closing position, overlapping region 36 and the first fixed plate gathering sill
31 both sides being located at the second fixed plate gathering sill 32 respectively.In addition, as it was previously stated, overlapping region the 36 to the first fixed plate gathering sill
Relation between the minimum coverage l1 of 31 centrages and maximum effective distance l2 and drive rod 11 length m is l1 < m < l2.?
Under such dimensional fits, drive mechanism is in the necessary larger range of movement of the first contact, that is, the larger operational stroke switching
In the case of (operational stroke of switch refers to the displacement of the first contact, i.e. the displacement of push rod 10), also can keep relatively
The little lateral dimension perpendicular to the first contact direction of motion.
In Fig. 1, when the first contact (not shown) drives push rod 10 to move right, switch carries out closing operation；The
When one contact (not shown) drives push rod 10 toward left movement, switch carries out sub-switching operation.Position shown in Fig. 1 is that switch closes
Lock ultimate position, now, drive pin 12 slides in overlapping region 36, because the first actuating arm straight trough 251 is straight with the first fixed plate
The guide track of groove 331 is consistent, so actuating arm 24 is not driven remains stationary, thus connecting rod 20 and connection fixed thereto
The second arcing contact remains stationary.
Refer to Fig. 2 a to Fig. 2 g, Fig. 2 a to Fig. 2 g is the sub-switching operation process of the switch drive embodiment of the present invention
Schematic diagram.
Fig. 2 a is switch combined floodgate ultimate position, when carrying out switching sub-switching operation, the first contact (not shown) band
Dynamic push rod 10 is to left movement.Fig. 2 a to Fig. 2 c is the initial stage of switch sub-switching operation, and within this time period, drive pin 12 is in coincidence area
Move in domain 36, actuating arm 24 is not driven, connecting rod 20 and the second arcing contact (not shown) remains stationary.As Fig. 2 c extremely
Shown in Fig. 2 g, continue to left movement with push rod 10, drive pin 12 will move out overlapping region 36, and along fixed plate chute 33
Slide to the first fixed plate gathering sill 31 direction, during this, actuating arm 24 is driven and rotated around fixing axle 23 by drive pin 12,
Slave arm 22, with rotation, drives follower lever 21 to move, and follower lever 21 pulls connecting rod 20 and the second arcing contact solid along second
Fixed board gathering sill 32 slides to the right.Within this time period, the sliding speed of connector 20 and the second arcing contact is gradually increased by little,
Subsequently reduce again.Fig. 2 g is switch separating brake ultimate position.
Fig. 3 a shows the displacement curve 19 of push rod 10 (the first contact) and the displacement of connecting rod 20 (the second arcing contact)
Each state in curve 29, wherein 29a to 29g difference corresponding diagram 2a to Fig. 2 g.
Fig. 3 b shows the rate curve 39 of push rod 10 (the first contact) and the speed of connecting rod 20 (the second arcing contact)
Curve 49, push rod 10 speed is assumed to steady state value.Each state in wherein 49a to 49g difference corresponding diagram 2a to Fig. 2 g.
Can be seen that during switch sub-switching operation from Fig. 3 b, the second arcing contact is zero in 49a to 49c stage speed,
After 49c, speed starts to increase, and reaches maximum in 49e, subsequently reduces, 49g is the final speed of the second arcing contact again.
Due to the speed of push rod 10 (the first contact) be assumed to constant, so the gear ratio variation tendency of drive mechanism with second arc touch
The rate curve 49 of head is consistent, and simply numerical value and dimension are different.
As Fig. 3 b, switch separating brake process is divided into three phases, 49a to 49c is the separating brake first stage, in this stage, connects
Contact element not yet separates, and the gear ratio of drive mechanism is zero, and contact is moved with relatively low relative velocity, and moving-mass is less, connects
Abrasion between contact element is also less.
49c to 49e is separating brake second stage, and connecting rod 20 (second arcing contact) starts with respect to push rod 10 (the first contact
Part) adverse movement, the gear ratio of drive mechanism starts from scratch increase, and arcing contact separates and produces electricity in this separating brake second stage
Arc, then the gear ratio of drive mechanism reach maximum, as it is assumed that push rod 10 constant airspeed, connecting rod 20 (the second arcing contact)
Adverse movement speed also reach maximum, so that electric arc is elongated rapidly.When arcing contact just separates, the gear ratio of drive mechanism
It is not more than 1.5:1, preferably no greater than 1:1, especially preferably no more than 0.5:1.
49e to 49g is the separating brake phase III, and the gear ratio of drive mechanism starts to reduce from maximum.In this separating brake the 3rd
In the stage, electric arc is elongated further and is extinguished, and the speed of connecting rod 20 (the second arcing contact) also starts to reduce from maximum.
Referring to Fig. 3 b, abscissa is the time, and vertical coordinate is the speed of the second arcing contact (connecting rod 20).Touch according to the second arc
Separating brake process is divided into three phases along abscissa by the velocity characteristic of head (connecting rod 20): the first stage corresponds to for 49a-49c
Time, second stage be the 49c-49e corresponding time, the phase III be the 49e-49g corresponding time.Above-mentioned switch separating brake mistake
In the three phases of journey, the time of first stage and the ratio of time used by whole operation stroke are not more than 50%, preferably less
In 40%, especially preferably no more than 30%.The time of second stage of switch separating brake process and time used by whole operation stroke
Ratio be not more than 50%.As it is assumed that push rod 10 constant airspeed, above-mentioned time scale is also equal to the ratio between stroke, that is,
The time of first stage and the ratio of time used by whole operation stroke are equal to stroke and the whole operation stroke of first stage
Ratio, the stroke that the time of second stage and the ratio of time used by whole operation stroke are equal to second stage grasped with whole
Make the ratio of stroke.
Switch drive embodiment 2
Fig. 4 is the second embodiment of the switch drive of the present invention, the switch drive of this second embodiment and the
One embodiment difference is: slave end mechanism includes slave arm 22 and follower pin 26.Wherein, one end of slave arm 22 is fixed
It is connected to actuating arm 24, the other end fixes described follower pin 26.Connecting rod 20 is provided with connecting rod chute 201, and follower pin 26 is stretched
Enter in connecting rod chute 201 and can slide along connecting rod chute 201, thus the rotation of slave arm 22 is converted into connecting rod 20
Linear motion.Preferably, connecting rod chute 201 is in " one " font, it is further preferred that the connecting rod chute of " one " font
201 longitudinal centre line is perpendicular to the centrage of the second fixed plate gathering sill 32.
The structure of the other parts of the switch drive of this second embodiment is identical with first embodiment, no longer superfluous here
State.
Switch drive embodiment 3
Fig. 5 is the 3rd embodiment of the switch drive of the present invention, the switch drive of this 3rd embodiment and the
One embodiment difference is: slave end mechanism includes tooth bar 202 and the follower disk 27 that can rotate with actuating arm 24.Wherein tooth
, located at connecting rod 20, follower disk 27 is located at the end of actuating arm 24 for bar 202.The outward flange of follower disk 27 is provided with can be with tooth bar 202
Several teeth 271 of cooperation, engage cooperation by tooth bar 202 and several teeth 271, and the rotation of actuating arm 24 is converted into company
The linear motion of extension bar 20.The outward flange of follower disk 27 is preferably shaped to arc, particularly preferably circular arc, certainly not as
Limit, the outward flange of follower disk 27 can also be designed to other shapes.Tooth bar 202 and connecting rod 20 can be each independent knots
Structure, by being welded together, preferably the two is formed in one.Follower disk 27 and actuating arm 24 can be each independent
Structure, by being welded together, preferably the two is formed in one.
The structure of the other parts of the switch drive of this 3rd embodiment is identical with first embodiment, no longer superfluous here
State.
The above is only the concrete structure citing of the switch drive of the present invention, be not limited in actual design, use,
Slave end mechanism particularly therein can also be the mechanisms such as crank block, shift fork, and here does not enumerate.
Power switch
The power switch of the present invention, including housing, the first contact in described housing, the second contact and switch
Drive mechanism, described first contact and the second contact can combine under driving means effect or separately realize described work(
The switch closing and switch opening of rate switch.Wherein said switch drive is switch drive of the present invention.
In the power switch of the present invention, the second contact, in addition to the second arcing contact, also includes the second main contact (in figure
Not shown).When connecting rod 20 is simultaneously connected with the second main contact, the second main contact can be driven to do together with the second arcing contact reversely
Motion.
Industrial applicibility
Switch drive of the present invention and power switch can be widely applied to electric field.The switch drive of the present invention
And power switch, simple and reliable, take up room little, the lateral dimension being especially perpendicularly to the direction of movement is little, do not increase switch and produce
The diameter of grade post；The switch drive of the present invention can realize preferable adverse movement characteristic, the motion of reverse arcing contact
Curve can better meet the needs that electric current cut-offs, and improves the break performance of electric switch.Switch drive of the present invention and
Power switch can be widely applied to electric field.
Although exemplary embodiment describing the present invention with reference to several, it is to be understood that, term used is explanation and shows
Example property and nonrestrictive term.Because the present invention can be embodied as the spirit without deviating from invention or reality in a variety of forms
Matter, it should therefore be appreciated that above-described embodiment is not limited to any aforesaid details, and the spirit that should be limited in appended claims
Widely explain with scope, therefore fall into the whole changes in claim or its equivalent scope and remodeling all should be the power of enclosing
Profit requires to be covered.
Claims (35)
1. a kind of switch drive, for switching, including the push rod (10) for connecting the first contact, is used for connection second
Driving side mechanism that the connecting rod (20) of the second arcing contact of contact is connected with described push rod (10) and by described driving side
The motion of mechanism is transferred to the slave end mechanism of described connecting rod (20) it is characterised in that described switch drive also includes
Fixed plate (30), described fixed plate (30) be provided with fixed plate chute (33), slide in it for described push rod (10) first
Fixed plate gathering sill (31) and the second fixed plate gathering sill (32) sliding in it for described connecting rod (20), described fixation
, adjacent to described first fixed plate gathering sill (31), the other end is to described second fixed plate gathering sill for the one end of plate chute (33)
(32) direction extends and exceeds described second fixed plate gathering sill (32) part；Described driving side mechanism includes drive rod
(11), drive pin (12) and actuating arm (24), described actuating arm (24) is provided with actuating arm chute (25), and can be around being fixed on
The fixing axle (23) stating fixed plate (30) rotates, and rotary gemel and described push rod (10) hinge are passed through in one end of described drive rod (11)
Connect, the fixing described drive pin (12) of the other end, described drive pin (12) can be along described actuating arm chute (25) and described fixed plate
Chute (33) slides.
2. switch drive as claimed in claim 1 it is characterised in that described slave end mechanism include follower lever (21) and
Slave arm (22), described actuating arm (24) is fixed in one end of described slave arm (22), and the other end connects institute by rotary gemel
State one end of follower lever (21), the other end of described follower lever (21) is hinged with described connecting rod (20) by rotary gemel.
3. switch drive as claimed in claim 1 it is characterised in that described first fixed plate gathering sill (31) with described
Second fixed plate gathering sill (32) is parallel to each other.
4. switch drive as claimed in claim 1 is it is characterised in that the center of described second fixed plate gathering sill (32)
Line and switch axis are on same straight line.
5. switch drive as claimed in claim 1 is it is characterised in that described fixing axle (23) is fixed on described second admittedly
On the centrage of fixed board gathering sill (32).
6. switch drive as claimed in claim 1 is it is characterised in that described fixed plate chute (33) is a straight trough or arc
Shape groove.
7. switch drive as claimed in claim 1 is it is characterised in that described fixed plate chute (33) includes head and the tail successively
The the first fixed plate straight trough (331) connecting and at least one section arc groove, and described first fixed plate straight trough (331) and adjacent circle
Connection between arc groove and the connection between adjacent two arc grooves are rounding off and connect.
8. switch drive as claimed in claim 7 is it is characterised in that described fixed plate chute (33) also includes being connected to
Second fixed plate straight trough (334) of the last section of arc groove.
9. switch drive as claimed in claim 8 it is characterised in that described second fixed plate straight trough (334) parallel to
Described first fixed plate gathering sill (31).
10. switch drive as claimed in claim 1 is it is characterised in that fixed plate chute (33) is solid adjacent to described first
One end of fixed board gathering sill (31) is near-end, and the other end away from described first fixed plate gathering sill (31) is far-end, described solid
The change of the air line distance between each point on the centrage of described fixed plate chute (33) for the center of dead axle (23) turns to: by described
Distal-to-proximal described air line distance becomes big from large to small again, and apart from far-end air line distance be more than apart from near-end straight line away from
From 1.3 times.
11. switch drives as claimed in claim 1 it is characterised in that described actuating arm chute (25) be a straight trough or
One arcuate groove.
12. switch drives as claimed in claim 1 are it is characterised in that described actuating arm chute (25) includes the first drive
Swing arm straight trough (251) and the second actuating arm straight trough (252), become therebetween a first angle (λ), and this first angle (λ) is
120°-180°.
13. switch drives as claimed in claim 2 are it is characterised in that described actuating arm (24) and slave arm (22) are
Integrative-structure, or Split type structure being fixed together.
14. switch drives as claimed in claim 13 it is characterised in that the centrage of described actuating arm (24) with described
The centrage of slave arm (22) becomes a second angle (θ), and described second angle (θ) is 90 ° -180 °.
15. switch drives as claimed in claim 14 are it is characterised in that described second angle (θ) is 120 ° -170 °.
16. switch drives as claimed in claim 13 it is characterised in that the length of described follower lever (21) with described from
The length ratio of swing arm (22) is 3:1.
17. switch drives as claimed in claim 16 it is characterised in that the length of described follower lever (21) with described from
The length ratio of swing arm (22) is 2:1.
18. switch drives as claimed in claim 17 it is characterised in that the length of described follower lever (21) with described from
The length ratio of swing arm (22) is 3:2.
19. switch drives as claimed in claim 1 are it is characterised in that the length of described drive rod (11) is switch behaviour
Make the 20%～80% of stroke.
20. switch drives as claimed in claim 19 are it is characterised in that the length of described drive rod (11) is switch behaviour
Make the 30%～70% of stroke.
21. switch drives as claimed in claim 20 are it is characterised in that the length of described drive rod (11) is switch behaviour
Make the 40%～60% of stroke.
22. switch drives as any one of claim 1-21 are it is characterised in that in described switch "on" position
Under, actuating arm chute (25) is partially overlapped with fixed plate chute (33), forms overlapping region (36).
23. switch drives as claimed in claim 22 are it is characterised in that described overlapping region (36) are formed at described drive
Swing arm chute (25) and the one end of fixed plate chute (33).
24. switch drives as claimed in claim 23 are it is characterised in that described overlapping region (36) arrive described first admittedly
The minimum coverage of fixed board gathering sill (31) centrage is l1, maximum effective distance is the effective of l2 and described drive rod (11)
Relation between length m is: l1 < m < l2.
25. switch drives as claimed in claim 24 are it is characterised in that described overlapping region (36) arrive described first admittedly
The minimum coverage of fixed board gathering sill (31) centrage is the pass between (l1) and the effective length (m) of described drive rod (11)
It is to be: l1 >=0.7m.
26. switch drives as claimed in claim 25 are it is characterised in that described overlapping region (36) arrive described first admittedly
The minimum coverage of fixed board gathering sill (31) centrage is the pass between (l1) and the effective length (m) of described drive rod (11)
It is to be: l1 >=0.8m.
27. switch drives as claimed in claim 26 are it is characterised in that described overlapping region (36) arrive described first admittedly
The minimum coverage of fixed board gathering sill (31) centrage is the pass between (l1) and the effective length (m) of described drive rod (11)
It is to be: l1 >=0.9m.
28. switch drives as claimed in claim 1 are it is characterised in that described slave end mechanism includes one end and is fixed on
The slave arm (22) of described actuating arm (24) and the follower pin (26) being fixed on described slave arm (22) the other end, described connection
Bar (20) is provided with connecting rod chute (201), and described follower pin (26) stretches into described connecting rod chute (201) can be along described
Connecting rod chute (201) slides, thus the rotation of described slave arm (22) is transformed into the linear motion of connecting rod (20).
29. switch drives as claimed in claim 28 are it is characterised in that described connecting rod chute (201) is in " one " word
Shape.
30. switch drives as claimed in claim 29 are it is characterised in that in the longitudinal direction of described connecting rod chute (201)
Heart line is perpendicular to the centrage of described second fixed plate gathering sill (32).
31. switch drives as claimed in claim 1 are it is characterised in that described slave end mechanism is included located at described company
The tooth bar (202) of extension bar (20) and the follower disk (27) that can rotate with described actuating arm (24), the outside of described follower disk (27)
Edge is provided with several teeth (271) that can coordinate with described tooth bar (202), by described several teeth (271) and described tooth bar
(202) engagement cooperation, the rotation of described actuating arm (24) is converted into the linear motion of described connecting rod (20).
32. switch drives as claimed in claim 31 are it is characterised in that the outward flange of described follower disk (27) is arc
Shape.
A kind of 33. power switch, including housing, the first contact in described housing, have the second of the second arcing contact
Contact and switch drive, described first contact and the second contact can combine or separately under driving means effect
And realize the switch closing and switch opening of described power switch it is characterised in that described switch drive is as in claim 1-32
Switch drive described in any one.
34. power switch as claimed in claim 33 are it is characterised in that described second contact also includes the second main contact.
35. power switch as claimed in claim 34 are it is characterised in that described second main contact is connected to described connecting rod
(20).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/071504 WO2014121483A1 (en) | 2013-02-07 | 2013-02-07 | Switch transmission mechanism and power switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104704592A CN104704592A (en) | 2015-06-10 |
| CN104704592B true CN104704592B (en) | 2017-01-18 |
Family
ID=51299191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380051692.6A Active CN104704592B (en) | 2013-02-07 | 2013-02-07 | Switch transmission mechanism and power switch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104704592B (en) |
| WO (1) | WO2014121483A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346547A (en) * | 2017-01-25 | 2018-07-31 | Ls 产电株式会社 | Use the twofold motion gas-insulated switchgear with multiple bars |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148215B (en) * | 2018-10-11 | 2019-10-11 | 西安西电开关电气有限公司 | Breaker |
| CN109192597B (en) * | 2018-10-11 | 2020-02-04 | 西安西电开关电气有限公司 | Circuit breaker and double-acting transmission device thereof |
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| CN1128892A (en) * | 1994-08-01 | 1996-08-14 | Abb管理有限公司 | Pressure gas switch |
| EP0809269A2 (en) * | 1996-05-24 | 1997-11-26 | Siemens Aktiengesellschaft | High voltage circuit breaker with two driven switch contact pieces |
| EP0822565A2 (en) * | 1996-08-01 | 1998-02-04 | AEG Energietechnik GmbH | Gas-blast switch |
| CN1357901A (en) * | 2000-11-30 | 2002-07-10 | 施耐德电器高电压产品公司 | High-voltage electric switch unit with composite motion |
| CN101202175A (en) * | 2006-12-11 | 2008-06-18 | Abb技术有限公司 | Circuit breaker with a gear having a dead point |
| CN101548351A (en) * | 2006-12-06 | 2009-09-30 | Abb技术有限公司 | Gear for electrical circuit breakers |
| CN203277201U (en) * | 2013-02-07 | 2013-11-06 | 厦门华电开关有限公司 | Switch transmission mechanism and power switch |
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2013
- 2013-02-07 CN CN201380051692.6A patent/CN104704592B/en active Active
- 2013-02-07 WO PCT/CN2013/071504 patent/WO2014121483A1/en active Application Filing
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|---|---|---|---|---|
| CN1128892A (en) * | 1994-08-01 | 1996-08-14 | Abb管理有限公司 | Pressure gas switch |
| EP0809269A2 (en) * | 1996-05-24 | 1997-11-26 | Siemens Aktiengesellschaft | High voltage circuit breaker with two driven switch contact pieces |
| EP0822565A2 (en) * | 1996-08-01 | 1998-02-04 | AEG Energietechnik GmbH | Gas-blast switch |
| CN1357901A (en) * | 2000-11-30 | 2002-07-10 | 施耐德电器高电压产品公司 | High-voltage electric switch unit with composite motion |
| CN101548351A (en) * | 2006-12-06 | 2009-09-30 | Abb技术有限公司 | Gear for electrical circuit breakers |
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| CN203277201U (en) * | 2013-02-07 | 2013-11-06 | 厦门华电开关有限公司 | Switch transmission mechanism and power switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108346547A (en) * | 2017-01-25 | 2018-07-31 | Ls 产电株式会社 | Use the twofold motion gas-insulated switchgear with multiple bars |
| CN108346547B (en) * | 2017-01-25 | 2019-11-05 | Ls 产电株式会社 | Use the twofold motion gas-insulated switchgear with multiple bars |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104704592A (en) | 2015-06-10 |
| WO2014121483A1 (en) | 2014-08-14 |
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