CN108615645A - A kind of three station of Direct Action Type isolation operating mechanism and its control method using special-shaped axis positioning - Google Patents
A kind of three station of Direct Action Type isolation operating mechanism and its control method using special-shaped axis positioning Download PDFInfo
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- CN108615645A CN108615645A CN201810776573.1A CN201810776573A CN108615645A CN 108615645 A CN108615645 A CN 108615645A CN 201810776573 A CN201810776573 A CN 201810776573A CN 108615645 A CN108615645 A CN 108615645A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
A kind of three station of Direct Action Type isolation operating mechanism and its control method using special-shaped axis positioning, including fixed plate and can opposing fixed plate rotation turntable, turntable realizes isolator operation state independent of each other, operation shield state, earthing switch mode of operation when rotating, the turntable back side is fixedly connected with special-shaped axis, the first and second fin is arranged in axial order on special-shaped axis, and first and second is spaced guide pad installation space between fin, the first fin is radially separated by 41 degree of angles settings with the second fin in special-shaped axis；The back side installation gear drive and lead screw transmission mechanism of fixed plate make moving contact, isolation static contact, grounding static contact realize linear motion, guide pad is set on the special-shaped axis, guide pad realizes that the state for being isolated or being grounded operation locks with the cooperation of the first and second fin, when carrying out isolated operation, ensure that moving contact acts between isolation static contact and moving contact, when carrying out ground connection operation, it is ensured that moving contact acts between grounding static contact and moving contact.
Description
Technical field
The present invention relates to direct-acting three-working-position isolation, especially a kind of three station of Direct Action Type positioned using special-shaped axis
Operating mechanism and its control method is isolated.
Background technology
The operating mechanism main function of direct-acting three-working-position isolation is that the rotary motion of driving motor is passed through a system
Biographies dynamic component is transmitted in the rotary shaft of tri-station isolating switch.Currently, the three station Direct Action Types largely used in the market every
All there are following two kinds of defects from operating mechanism：
1, it is operated using disc spring, is positioned as the position of three stations according to the deflection of disc spring and rotational angle, by
In the power of disc spring itself, there are errors, while manufacturing cost is higher, and considering from reliability and economically cannot be extensive
Using；
2, it is moved spring finger setting mode using pulling out strip, but drive link radial shear power can make spring catch deformation, failure cause to hold
The operation failure of pass, or even cause safety accident.
Invention content
The technical problem to be solved by the present invention is to, in view of the shortcomings of the prior art, provide it is a kind of using special-shaped axis positioning
Operating mechanism and its control method is isolated in three station of Direct Action Type, and the operation of disk can be instructed according to panel operation smoothly, reliably, certainly
Reasonable operation dynamicly is carried out to the isolation of the Direct Action Type separating brake/ground connection three-station that closes a floodgate/be isolated.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of direct acting positioned using special-shaped axis
Three station of formula is isolated operating mechanism, including fixed plate, the turntable that is set in fixed plate and constitutes switch major loop conducting system
And in the isolation static contact, moving contact, the grounding static contact that are sequentially arranged on same straight line, when isolation static contact is combined with moving contact
When, disconnecting switch is closed a floodgate, and when grounding static contact is combined with moving contact, earthing switch closes a floodgate, which is characterized in that the fixed plate
It is equipped with the first isolated operation hole, the first ground connection handle hole and turntable connecting hole, the first isolated operation hole and the first ground connection operation
The clearance hole that on same camber line and sequence is arranged, dislocation hole and ground hole are equipped between hole；The front setting of the turntable
Clearance hole, dislocation hole or ground hole can be selectively inserted to realize that the selective positioning bar of turntable positioning, the back side of the turntable are solid
Surely special-shaped axis is connected, and special-shaped axis is supported on across the turntable connecting hole of the fixed plate in fixed plate, on the turntable also
It is provided with the second isolated operation hole to match with the first isolated operation hole, and second to match with the first ground connection handle hole
Be grounded handle hole, when selecting locating rod to be inserted into clearance hole, the second isolated operation hole and the first isolated operation hole be concentrically formed every
From Switching Operations states, when selecting locating rod to be inserted into dislocation hole, the first isolated operation hole, the first ground connection handle hole are respectively with the
Two isolated operation holes, the second ground connection handle hole mutually stagger, formation operation masked state, when selection locating rod is inserted into ground hole
When, the second ground connection handle hole and the first ground connection handle hole are concentrically formed earthing switch mode of operation；In the axial direction of the special-shaped axis
Sequence the first fin of setting and the second fin, and it is separated by a guide pad installation space between the first fin and the second fin, first
Fin and the second fin are arranged in the 41 degree of angles that are radially separated by of special-shaped axis；The back side installation the in first isolated operation hole
First gear, the second behaviour of back side installation of the first ground connection handle hole is fixedly mounted in the tail portion of one operating shaft, the first operating shaft
Make axis, second gear, the intermeshing of the first and second gear, and the first and second gear is fixedly mounted all with the in the tail portion of the second operating shaft
Three gears are meshed, and the back side of first and second gear is fixedly connected with main transmission lead screw；The front of the third gear is fixed to be connected
Guiding lead screw is connect, is oriented on lead screw and guide pad is installed through being threadedly coupled, and guide pad clearance fit is mounted on the special-shaped axis
On guide pad installation space, the top of the guide pad is equipped with to match with the first and second fin radial section of the special-shaped axis
Guide groove, when the first fin or the second fin are aligned with guide groove, under the drive for being oriented to lead screw, guide pad is relatively special-shaped
Axis moves；For the moving contact through being threadably mounted at the middle part of the main transmission lead screw, the both ends of main transmission lead screw wear institute respectively
Isolation static contact and the grounding static contact are stated, under the drive of main transmission lead screw, moving contact is moved relative to main transmission lead screw, is made
Moving contact is combined with static contact or grounding static contact is isolated.
First isolated operation hole and first ground connection handle hole between be equipped with curve arc groove, the one of the curve arc groove
End is equipped with the clearance hole, and the other end is equipped with the ground hole, and centre is equipped with the dislocation hole.
The selective positioning bar includes the connector being fixedly connected with turntable, and is fixed in connector and headed is determined
Position pin, connects between the positioning pin and the connector through spring.
Combined floodgate stroke length is isolated equal to moving contact in the sum of the length of first fin and thickness of guide pad, and second is convex
The sum of the length of rib and the thickness of guide pad are equal to moving contact contact of earth stroke length.
The moving contact, isolation static contact, grounding static contact are sealed in the pole of epoxy resin.
The screw pitch of the main transmission lead screw is 10mm, and the fracture of the disconnecting switch is opened away from for 155mm, the earthing switch
Fracture open away from for 135mm, when the disconnecting switch and earthing switch close a floodgate, the overtravel that the moving contact is inserted into is 10mm.
In order to solve the above technical problems, the present invention also provides a kind of above-mentioned three stations of Direct Action Type positioned using special-shaped axis
The control method of operating mechanism is isolated comprising：
When selecting locating rod to be inserted into the dislocation hole of fixed plate, turntable and its special-shaped axis being fixedly connected are automatically positioned simultaneously certainly
It is dynamic to be locked in operation shield state, and turntable blocks the first isolated operation hole in fixed plate, the first ground connection handle hole, makes operation
Handle cannot be inserted into；
When turntable rotates counterclockwise, and selective positioning bar is inserted into the clearance hole of fixed plate, turntable and its abnormity being fixedly connected
Axis is automatically positioned and is automatically locked at isolator operation state, and in the second isolated operation hole on turntable and fixed plate
First isolated operation hole is concentric, i.e., the first isolated operation hole is opened, the first ground connection operation bore closure, meanwhile, on special-shaped axis
First fin is aligned with the guide groove on guide pad top, and the guide groove dislocation of the second fin and guide pad makes guide pad can only edge
First fin moves forward；When insertion operation handle and isolated operation axis is rotated, first gear drives the rotation of main transmission lead screw, makes
Moving contact moves forward, and realizes the closing operation of disconnecting switch, at the same time, third gear and is fixedly linked with third gear
It is oriented to the action of lead screw synchronous rotary, guide pad is made to be moved forward along the first fin, i.e., the first fin of special-shaped axis is locked with guide pad
It is fixed, the gear-change operation of selective positioning bar cannot be carried out, until disconnecting switch in-place closing；When operation handle reverse operation, make
Disconnecting switch separating brake is in place；
When turntable rotates clockwise, and selective positioning bar is inserted into the dislocation hole of fixed plate, turntable and its abnormity being fixedly connected
Axis is automatically positioned and is automatically locked at earthing switch mode of operation, and on the second ground connection handle hole and fixed plate on turntable
First ground connection handle hole is concentric, i.e., the first ground connection handle hole is opened, the first isolated operation bore closure, meanwhile, the on special-shaped axis
Two fins are aligned with the guide groove on guide pad top, the dislocation of the guide groove of the first fin and guide pad, make guide pad can only be along the
Two fins move backward；When insertion operation handle and ground connection operating shaft is rotated, second gear drives the rotation of main transmission lead screw, makes
Contact moves backward, and is grounded the closing operation of switch, at the same time, third gear and is led with what third gear was fixedly linked
It is acted to lead screw synchronous rotary, guide pad is made to be moved backward along the second fin, is i.e. the overall process in ground connection stroke, the of special-shaped axis
Two fins are locked with guide pad, cannot carry out the gear-change operation of selective positioning bar, until earthing switch in-place closing；Work as manipulator
Handle reverse operation makes grounding switch tripping in place.
Fixed plate is set to show isolator operation state independent of each other, behaviour when the turntable rotation of operating mechanism of the present invention
Make masked state, earthing switch mode of operation, the back side installation gear drive and lead screw transmission mechanism of fixed plate make to touch
Head, isolation static contact, grounding static contact realize linear motion, while being fixedly connected with special-shaped axis at the turntable back side, are set on special-shaped axis
Set the first and second fin, and the first and second fin interval is arranged, and guide pad be set between the first and second fin, the first fin with
Second fin is radially separated by the setting of 41 degree of angles in special-shaped axis, by guide pad guide groove and the cooperation of the first and second fin
The state locking for being isolated or being grounded operation is realized, when carrying out isolator operation, it is ensured that moving contact is in isolation static contact and moves
Acted between contact, the division operation of isolation realized, when carrying out earthing switch operation, it is ensured that moving contact in grounding static contact and
It is acted between moving contact, is grounded the division operation of switch.
Compared with prior art, the device have the advantages that being：
1) the position selection of the selective positioning bar on turntable forms unique movement side with the dynamic and static contact on main transmission lead screw
Formula；
2) position that cannot change the selective positioning bar on turntable before or after the operation in place of the first and second operating shaft selects, behaviour
Rotary turnplate after making in place, so that it may realize automatic spacing；
3) the locking distance of special-shaped axis and the clearance between open contacts in pole, overtravel error are within 1mm；
4）Manufacturing cost is low, easy to operate, securely and reliably.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the turntable structure schematic diagram with special-shaped axis.
Fig. 3 is the connection structure diagram of special-shaped axis and guiding lead screw.
Fig. 4 is guide block structure figure.
Fig. 5 is fixed plate structure figure.
Specific implementation mode
As Figure 1-Figure 5, the present invention is a kind of includes using three station of the Direct Action Type isolation operating mechanism of special-shaped axis positioning
Fixed plate 1 and turntable 2.Fixed plate 1 is equipped with the first isolated operation hole 15, first ground connection handle hole 16 and turntable connecting hole 18,
First isolated operation hole 15 and first is equipped with curve arc groove 17 between being grounded handle hole 16, and one end of the curve arc groove 17 is set
There are clearance hole 171, the other end to be equipped with ground hole 173, centre is equipped with dislocation hole 172.The front setting of turntable 2 can selectively insert
17 different location of curve arc groove realizes that the selective positioning bar 3 that turntable 2 positions, the back side of turntable 2 are fixedly connected with special-shaped axis 14, and
Special-shaped axis 14 is supported on across the turntable connecting hole 18 of fixed plate 1 in fixed plate 1.In the present embodiment, selective positioning bar 3 includes
The connector 31 being fixedly connected with turntable 2, and the positioning pin 33 of headed 32 that is fixed in connector 31, positioning pin 33 with even
It is connected through spring between fitting 31, when transfering to selective positioning bar 3 outward through head 32, spring is compressed, and positioning pin 33 retreats
So that the end of positioning pin 33 is moved along curve arc groove 17 and selectively inserts the clearance hole 171 on curve arc groove 17, connects
Ground hole 173, dislocation hole 172.The the second isolated operation hole 19 to match with the first isolated operation hole 15 is additionally provided on turntable 2,
And the second ground connection handle hole 20 to match with the first ground connection handle hole 16, when selecting locating rod 3 to be inserted into clearance hole 171,
Second isolated operation hole 19 and the first isolated operation hole 15 are concentric, are in isolator operation state；When selection locating rod 3 is inserted into
When dislocation hole 172, the first isolated operation hole 15, first is grounded handle hole 16 and is grounded respectively with the second isolated operation hole 19, second
Handle hole 20 mutually staggers, and is in operation shield state；When selecting locating rod 3 to be inserted into ground hole 173, the second ground connection handle hole
20 is concentric with the first ground connection handle hole 16, is in earthing switch mode of operation.First fin A and second is set on the special-shaped axis 14
Fin B, and it is separated by a guide pad installation space L between the first fin A and the second fin B in the axial direction of special-shaped axis 14, different
Shape axis 14 is radially separated by 41 degree of angle settings.The back side in the first isolated operation hole 15 of fixed plate 1 is installed by the first operating shaft
12, first gear 11 is fixedly mounted in the tail portion of the first operating shaft 12；The back side installation the of first ground connection handle hole 16 of fixed plate 1
Second gear 11 ' is fixedly mounted in the tail portion of two operating shafts 5, the second operating shaft 5, and the first and second gear 11,11 ' is meshed, and the
One, two gears 11,11 ' are all meshed with third gear 6.The front of third gear 6, which is fixedly mounted, is oriented to lead screw 4, and the back side is fixed
Main transmission lead screw 10 is installed.It is oriented on lead screw 4 and guide pad 13 is fixedly mounted through being threadedly coupled, and 13 clearance fit of guide pad is installed
On the guide pad installation space L of special-shaped axis 14, in this way, guide pad 13 can be driven to move by being oriented to lead screw 4.Guide pad 13
Top be equipped with the guide groove 131 to match with the radial section of first and second fin A, B, as the first fin A or the second fin B
When being aligned with guide groove 131, under the drive for being oriented to lead screw 4, guide pad 13 can be moved relative to special-shaped axis 14.First fin A's
Combined floodgate stroke length, length and the guide pad 13 of the second fin B is isolated equal to moving contact in the sum of length and thickness of guide pad 13
The sum of thickness be equal to moving contact contact of earth stroke length.Moving contact 8 is main through being threadably mounted at the middle part of main transmission lead screw 10
Drive lead screw 10 wears isolation static contact 7 and grounding static contact 9, and the front end that static contact 7 is located at moving contact 8 is isolated, and ground connection is quiet
Contact 9 is located at the rear end of moving contact 8.Moving contact 8, isolation static contact 7, grounding static contact 9 are sealed in the pole of epoxy resin
In, the major loop conducting system of power switch is constituted, is connected with operating mechanism by main transmission lead screw 10.
Isolation/contact of earth switch in existing solid insulation switch cabinet is all made of three station direct dynamic structures, has body
The feature that product is small, electroanalysis is uniform.Moving contact 8, isolation static contact 7, grounding static contact 9 and main transmission lead screw 10 in Fig. 1 are
The phase structure schematic diagram of tri-station isolating switch, wherein moving contact 8, which is inserted into isolation static contact 7, realizes isolation closing operation,
Moving contact 8 is inserted into grounding static contact 9 and is grounded closing operation, and the screw pitch of main transmission lead screw 10 is generally 10mm, keeps apart
The fracture of pass is opened away from for 155mm, overtravel（Moving contact insertion）For 10mm, the fracture of earthing switch is opened away from for 135mm, is out of the line
Journey is 10mm, and by State Grid's system standard requirement, to meet safety requirements, disconnecting switch must separate behaviour with earthing switch
Make, that is, be necessary for two handle holes, the application presses national standard, and handle hole 16 is grounded using the first isolated operation hole 15, second
Carry out diplopore operation.The purposes in the dislocation hole 172 in Fig. 5 is：When selecting locating rod 3 centre is gone to after disconnecting switch is closed a floodgate
Dislocation hole locking isolation, can operation power switch divide-shut brake；When selection locating rod 3 after earthing switch closes a floodgate, in going to
Between dislocation hole locking ground connection, can turn on the switch cabinet door maintenance；In the non-separating brake of power switch or the not intact pass of door of switch cabinet
When closing, mechanical interlocking can lock turntable 2 automatically, cannot operate（It is in the handle hole misaligned state of turntable 2 and fixed plate 1）；
Only when guide pad 13 is in the interposition of special-shaped axis 14, selective positioning bar 3 could select behaviour since centre misplaces hole 172
Make position, you can counterclockwise turning operation disconnecting switch, it also can clockwise turning operation earthing switch.
When extraction selective positioning bar 3 and it is turned to the dislocation hole 172 of the curve arc groove 17 of fixed plate 1（Such as Fig. 5 institutes
Show）When, after unclamping selective positioning bar 3, the effect of positioning pin 33 in selective positioning bar 3 spring force inside it is popped up and is inserted into
In the intermediate dislocation hole 172 of the curve arc groove of fixed plate 1, due to turntable 2 be fixedly connected with selective positioning bar 3 integrally, because
And be automatically positioned together with turntable 2 and its special-shaped axis being fixedly connected 14 and lock automatically, turntable 2 blocks in fixed plate 1 at this time
The first isolated operation hole 15, first be grounded handle hole 16, operation handle cannot be inserted into, and be at this time power transmission state.
When selecting locating rod 3 to be located at intermediate dislocation hole 172, and guide pad 13 is in the first and second fin of special-shaped axis 14
When A, between B, extracts selective positioning bar 3 and rotate counterclockwise 41 degree and unclamp selective positioning bar 3, the positioning of selective positioning bar 3
When the left side clearance hole 171 for the curve arc groove 17 that pin 33 popped up and be inserted into fixed plate 1 under the action of spring force inside it, even
It is automatically positioned with turntable 2 and its special-shaped axis being fixedly connected 14 and locks automatically, at this time the second isolated operation hole on turntable 2
19 is concentric with the first isolated operation hole 15 in fixed plate 1, thus the first isolated operation hole 15 is opened, first ground connection on right side
Handle hole 16 is closed.Since turntable 2 is fixedly connected with special-shaped axis 14, thus special-shaped axis 14 also has rotated 41 degree with turntable 2, at this time
The first fin A on special-shaped axis 14 is aligned with the guide groove 131 on 13 top of guide pad, and the second fin B then with guide pad 13
Guide groove 131 misplaces, and guide pad 13 can only move forward in direction as shown in Figure 1.Insertion operation handle simultaneously rotates isolated operation axis
12, the first gear 11 of connection drives main transmission lead screw 10 and is moved forward with its moving contact 8 through threaded connection, realize every
The closing operation of pass is left, at the same time, the third gear 6 that is connected with the first and second gear 11,11 ' and its solid with third gear 6
Surely connected 4 synchronization action of guiding lead screw is oriented to lead screw 4 and guide pad 13 is driven to move forward, and after guide pad 13 starts,
First fin A enters in guide pad 13, and through the overall process of isolation stroke, because of the first fin A and guide pad of special-shaped axis 14
13 lock, therefore period cannot carry out the gear-change operation of selective positioning bar 3, until disconnecting switch in-place closing.Due to the first fin A
Combined floodgate stroke is isolated equal to moving contact with the sum of the thickness of guide pad 13, thus after disconnecting switch in-place closing, selection is made to determine
Position bar 3 returns in dislocation hole 172, so that it may realize isolated operation locking limit, it at this time can operation power switch divide-shut brake.When
When one isolated operation hole 15 is opened, the rotation of operation handle negative direction can make disconnecting switch separating brake in place.
When selecting locating rod 3 to be located at intermediate sub-gate position 172, and guide pad 13 is in the first and second fin of special-shaped axis 14
When A, between B, extracts selective positioning bar 3 and rotate clockwise 41 degree of releases, the positioning pin 33 in selective positioning bar 3 is in it
When the effect of portion's spring force pops up and is inserted into the right side ground position of 1 curve arc groove of fixed plate, together with turntable 2 and its it is fixedly connected
Special-shaped axis 14 be automatically positioned and lock automatically, as shown in Figure 1-Figure 3, at this time on turntable 2 second ground connection handle hole 20 with
The first ground connection handle hole 16 in fixed plate 1 is concentric, i.e., the first ground connection handle hole 16 on right side is opened at this time, left side first every
It is closed from handle hole 15, since turntable 2 is fixedly connected with special-shaped axis 14, when turntable rotates clockwise 41 degree, special-shaped axis is also same
41 degree of step rotation, the second fin B on special-shaped axis is aligned with the guide groove 131 on 13 top of guide pad at this time, and the first fin A is then
It misplaces with the guide groove 131 of guide pad 13, as shown in figure 3, guide pad 13 can only move backward in direction as shown in Figure 1.It is inserted into behaviour
Make handle and rotate ground connection operating shaft 5, the second gear 11 ' that ground connection operating shaft 5 connects drives main transmission lead screw 10 and passed through with it
The moving contact 8 of threaded connection moves backward, and is grounded the closing operation of closing switch, at the same time, with 11 ' phase of second gear
Third gear 6 even and its 4 synchronization action of guiding lead screw being fixedly linked are oriented to lead screw 4 and guide pad 13 are driven to move backward, and
And after guide pad 13 starts, the second fin B enters in the guide groove 131 of guide pad 13, and run through the overall process of ground connection stroke,
Because the second fin B of special-shaped axis 14 is locked with guide pad 13, therefore period cannot carry out the gear-change operation of selective positioning bar 3, until
Contact of earth switchs in-place closing.Since the sum of thickness of the second fin B and guide pad 13 is equal to moving contact contact of earth stroke,
Thus after earthing switch in-place closing, selective positioning bar 3 is set to return in dislocation hole 172, so that it may be grounded operation lock fixed limit
Position, can open the door maintenance at this time.When first ground connection handle hole 16 is opened, operation handle reverse operation can make earthing switch point
Lock is in place.
Claims (7)
1. operating mechanism, including fixed plate is isolated in a kind of three station of Direct Action Type using special-shaped axis positioning（1）, be set to fixed plate
On turntable（2）With composition power switch major loop conducting system and in the isolation static contact being sequentially arranged on same straight line（7）、
Moving contact（8）, grounding static contact（9）, when isolation static contact is combined with moving contact, disconnecting switch is closed a floodgate, and grounding static contact is worked as
When being combined with moving contact, earthing switch closes a floodgate, which is characterized in that the fixed plate is equipped with the first isolated operation hole（15）,
One ground connection handle hole（16）With turntable connecting hole（18）, it is equipped in same between the first isolated operation hole and the first ground connection handle hole
The clearance hole being arranged on one camber line and sequentially（171）, dislocation hole（172）And ground hole（173）；The front setting energy of the turntable
Clearance hole, dislocation hole or ground hole are selectively inserted to realize the selective positioning bar of turntable positioning（3）, the back side of the turntable is consolidated
Surely special-shaped axis is connected（14）, and special-shaped axis is supported in fixed plate, the turntable across the turntable connecting hole of the fixed plate
On be additionally provided with the second isolated operation hole to match with the first isolated operation hole（19）, and with first ground connection handle hole phase
The the second ground connection handle hole matched（20）, when selecting locating rod to be inserted into clearance hole, the second isolated operation hole and the first isolated operation
Hole is concentrically formed isolator operation state, when selecting locating rod to be inserted into dislocation hole, the first isolated operation hole, the first ground connection behaviour
Make hole to mutually stagger with the second isolated operation hole, the second ground connection handle hole respectively, formation operation masked state, when selection locating rod
When being inserted into ground hole, the second ground connection handle hole and the first ground connection handle hole are concentrically formed earthing switch mode of operation；The abnormity
The first fin is arranged in the axis upstream sequence of axis（A）With the second fin（B）, and it is separated by a guiding between the first fin and the second fin
Block installation space（L）, the first fin and the second fin are arranged in the 41 degree of angles that are radially separated by of special-shaped axis；First isolation
The back side of handle hole is installed by the first operating shaft（12）, first gear is fixedly mounted in the tail portion of the first operating shaft（11）, described first
The back side for being grounded handle hole is installed by the second operating shaft（5）, second gear is fixedly mounted in the tail portion of the second operating shaft（11’）, first,
Two gears be intermeshed, and the first and second gear all with third gear（6）It is meshed, the back side of first and second gear, which is fixed, to be connected
Connect main transmission lead screw（10）；The front of the third gear is fixedly connected with guiding lead screw（4）, it is oriented on lead screw and pacifies through being threadedly coupled
Fill guide pad（13）, and guide pad clearance fit is mounted on the guide pad installation space of the special-shaped axis, the guide pad
Top is equipped with the guide groove to match with the first and second fin radial section of the special-shaped axis（131）, when the first fin or second
When fin is aligned with guide groove, under the drive for being oriented to lead screw, guide pad is moved relative to special-shaped axis；The moving contact is pacified through screw thread
Mounted in the middle part of the main transmission lead screw, the both ends of main transmission lead screw wear the isolation static contact and the ground connection stationary contact respectively
Head, under the drive of main transmission lead screw, moving contact is moved relative to main transmission lead screw, makes moving contact and static contact is isolated or is grounded quiet
Contact combines.
2. operating mechanism, feature is isolated in a kind of three station of Direct Action Type using special-shaped axis positioning according to claim 1
It is, curve arc groove is equipped between first isolated operation hole and the first ground connection handle hole（17）, the curve arc groove
One end is equipped with the clearance hole, and the other end is equipped with the ground hole, and centre is equipped with the dislocation hole.
3. operating mechanism, feature is isolated in a kind of three station of Direct Action Type using special-shaped axis positioning according to claim 1
It is, the selective positioning bar includes the connector being fixedly connected with turntable（31）, and be fixed in connector and headed
（32）Positioning pin（33）, connected through spring between the positioning pin and the connector.
4. operating mechanism, feature is isolated in a kind of three station of Direct Action Type using special-shaped axis positioning according to claim 1
It is, the moving contact, isolation static contact, grounding static contact are sealed in the pole of epoxy resin.
5. operating mechanism, feature is isolated in a kind of three station of Direct Action Type using special-shaped axis positioning according to claim 1
It is, the screw pitch of the main transmission lead screw is 10mm, and the fracture of the disconnecting switch is opened away from for 155mm, the earthing switch
When fracture is opened away from closing a floodgate for 135mm, the disconnecting switch and earthing switch, the overtravel that the moving contact is inserted into is 10mm.
6. operating mechanism, feature is isolated in a kind of three station of Direct Action Type using special-shaped axis positioning according to claim 1
It is, combined floodgate stroke length, the second fin is isolated equal to moving contact in the sum of the length of first fin and thickness of guide pad
Length and the sum of the thickness of guide pad be equal to moving contact contact of earth stroke length.
7. operating mechanism is isolated in three station of Direct Action Type using special-shaped axis positioning described in a kind of any one of claim 1-6
Control method, it is characterised in that including：
When selecting locating rod to be inserted into the dislocation hole of fixed plate, turntable and its special-shaped axis being fixedly connected are automatically positioned simultaneously certainly
It is dynamic to be locked in operation shield state, and turntable blocks the first isolated operation hole in fixed plate, the first ground connection handle hole, makes operation
Handle cannot be inserted into；
When turntable rotates counterclockwise, and selective positioning bar is inserted into the clearance hole of fixed plate, turntable and its abnormity being fixedly connected
Axis is automatically positioned and is automatically locked at isolator operation state, and in the second isolated operation hole on turntable and fixed plate
First isolated operation hole is concentric, i.e., the first isolated operation hole is opened, the first ground connection operation bore closure, meanwhile, on special-shaped axis
First fin is aligned with the guide groove on guide pad top, and the guide groove dislocation of the second fin and guide pad makes guide pad can only edge
First fin moves forward；When insertion operation handle and isolated operation axis is rotated, first gear drives the rotation of main transmission lead screw, makes
Moving contact moves forward, and realizes the closing operation of disconnecting switch, at the same time, third gear and is fixedly linked with third gear
It is oriented to the action of lead screw synchronous rotary, guide pad is made to be moved forward along the first fin, i.e., the first fin of special-shaped axis is locked with guide pad
It is fixed, the gear-change operation of selective positioning bar cannot be carried out, until disconnecting switch in-place closing；When operation handle reverse operation, make
Disconnecting switch separating brake is in place；
When turntable rotates clockwise, and selective positioning bar is inserted into the dislocation hole of fixed plate, turntable and its abnormity being fixedly connected
Axis is automatically positioned and is automatically locked at earthing switch mode of operation, and on the second ground connection handle hole and fixed plate on turntable
First ground connection handle hole is concentric, i.e., the first ground connection handle hole is opened, the first isolated operation bore closure, meanwhile, the on special-shaped axis
Two fins are aligned with the guide groove on guide pad top, the dislocation of the guide groove of the first fin and guide pad, make guide pad can only be along the
Two fins move backward；When insertion operation handle and ground connection operating shaft is rotated, second gear drives the rotation of main transmission lead screw, makes
Contact moves backward, and is grounded the closing operation of switch, at the same time, third gear and is led with what third gear was fixedly linked
It is acted to lead screw synchronous rotary, guide pad is made to be moved backward along the second fin, is i.e. the overall process in ground connection stroke, the of special-shaped axis
Two fins are locked with guide pad, cannot carry out the gear-change operation of selective positioning bar, until earthing switch in-place closing；Work as manipulator
Handle reverse operation makes grounding switch tripping in place.
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| CN201810776573.1A CN108615645B (en) | 2018-07-16 | 2018-07-16 | Direct-acting type three-station isolation operating mechanism positioned by special-shaped shaft and control method thereof |
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