CN102354627B - Three-working-position electric operation mechanism for switching device - Google Patents
Three-working-position electric operation mechanism for switching device Download PDFInfo
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- CN102354627B CN102354627B CN201110288055.3A CN201110288055A CN102354627B CN 102354627 B CN102354627 B CN 102354627B CN 201110288055 A CN201110288055 A CN 201110288055A CN 102354627 B CN102354627 B CN 102354627B
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Abstract
The invention discloses a kind of three-working-position electric operation mechanism for switching device, in this mechanism's cabinet, have driving means, manual interlock and electrical control gear；Driving means uses single motor/gear pair/worm-gears/two-way controllable overrunning clutch/output shaft, is connected by shaft coupling and three position isolating/grounding switch, it is achieved splitting or integrating, ground connection operation；Frame is respectively arranged with a spacing clutch bearing pin in conjunction and position, and there are a pair pallet, semiaxis, release electromagnet in a point position, it is achieved splitting or integrating, the location of ground connection and mechanical clutch protection；The position switching of the location status instruction of positive side three and three station auxiliary switches is realized with chain gear transmission/bevel gear pair；Manual interlock can realize torch interlocking, the electro-magnetic interlock between switch element.Present configuration is simple, and output angle is stable, and position is accurate, unrelated with system inertia size, mechanical electric interlocking between isolation/ground connection, and production and application safety reliability is the highest, low cost, can quickly on/off switch operation.
Description
Technical field
The present invention relates to electric operating mechanism field, particularly gas-insulated metal enclosed switchgear set
The electric operating mechanism of three-station isolating/grounding switch operation in standby (GIS).
Background technology
In recent years, along with high-tension switch gear technology constantly improves, gas-insulated metal-enclosed open
Pass equipment develops to miniaturization, Composite, the multifunction of element, intelligent direction, isolation
Switch (DS) and earthed switch (ES) are combined into three-station isolating/grounding switch (DES),
Electric operation interlocking can be saved, it is achieved natural mechanical interlocking, not exist between DS and ES various
Maloperation.So, just need to realize changing between three stations with an electric operating mechanism: DS closes
Gate position (keep apart close+earthed switch divide), ES closing position (divide+connect by disconnecting switch
Ground switch closes) and DS, ES open position (disconnecting switch divide+earthed switch divide), simultaneously full
The various mechanical electric interlock requirements of foot, prevent maloperation, improve safety reliability.
Existing three-station electric operation mechanism is analyzed from theory of mechanics, mainly has following several biography
Flowing mode:
1. the secondary group rotating output to axle of motor/cylindrical gear pair/worm drive pair/sheave drive
Closing mechanism, its driving means is to be arranged symmetrically with, and the two set independent power sources that structure is identical drive
Mechanism, 2 motors, 2 screw nut drivens, a frid.2. motor/Cylinder Gear
The secondary combined mechanism rotating output to axle of wheel set/worm-gears/sheave drive, its driving dress
Putting is to be arranged symmetrically with, the mechanism that the two set independent powers that structure is identical drive.2 motors, 2
Secondary worm and worm gear, a frid.
Both the above transmission principle, uses the power-driven mechanism that 2 sets are independent, and isolates/connects
The design principle that ground switch unites two into one runs in the opposite direction, and opens moving to centre position power failure again
Dynamic, there is dyskinesias and the blind area of control, 2 set drive mechanisms can not realize mechanical interlocking, auxiliary
Helping switch transmission complicated, inefficiency, cost is the highest.
3. the unit mahine that motor/cylindrical gear pair/sheave drive transmission exports to slide plate straight line
Structure, it is single motor-driven, is closing, point, position output location, input has an idle running
Angle.And the isolating/grounding switch on GIS is all to rotate input, the mechanism of straight line output is also
Needing a set of conversion equipment to become rotary motion, just can use, structure is complicated.
4. motor/cylindrical gear pair/partial gear transmission/locking circular arc location output rotates
Motion, it is single motor, and partial gear transmission is easily generated Gen Qie and sudden change of acceleration, for protecting
Card reliable movement, has gap to make three position angle excursions and increases between Locking arc, essence
Spend low.Closing, point, three, ground position output shaft relies on Locking arc location, and input has a sky
Gyration, is closing, and status is set to mechanical position limitation.
5. motor/roller gear/sheave drive mechanism pair/locking circular arc location；Motor/Cylinder Gear
Wheel set/bevel gear pair/sheave drive pair/Locking arc plate location；Motor/cylindrical gear pair/worm gear snail
Bar pair/sheave drive pair/Locking arc location.These several principle mechanisms are all single motor, are closing,
Point, position relies on Locking arc location, and output angle changes greatly, owing to using sheave drive,
Machinery driving efficiency is low, the conjunction of input, and split pole is spacing is set to mechanical position limitation.Auxiliary switch transmission
Using Geneva mechanism and realize procedure operation, structure is complicated.
6. single motor/worm couple/groove and finger setting are to output shaft rotary motion.
7. single motor/cylindrical gear pair/Cylindrical Cam with Oscillating Roller Follower transmission/A-frame
Roller positions, electromagnet trip gear.
8. single motor/worm-gears is to output shaft rotary motion.Closing, position relies on snail
The self-locking of worm and gear mechanism and mechanical position limitation bearing pin location, in pallet location, a pair of centre position,
Electromagnet semiaxis is tripped.
Three station operating mechanisms of principles above there is problems in that
1., when startup and the stopping of motor, the inertia of transmission system is considered insufficient, nothing
Method realizes quickly closing, point, ground connection three-station electric operates.Drive train inertia is excessive, makes defeated
Go out angle inaccurate, mechanical position limitation pin is broken, and then Switch main body is damaged, or by machine
Structure inner body collision deformation, reduction of service life.
2. pair lead limit switch occurs damaging or acts on the extent of injury not in place and defence is arranged
Worry of exerciseing examination is not enough.As driven with sheave above, the mechanism of Locking arc plate location, in centre position
Travel switch loose contact or inoperative, damage, arise that a middle point position is not stopped, directly
Connect and close earthed switch and close or close to keep apart from earthed switch and close by keeping apart, cause out
Pass apparatus control system is disorderly.If in isolation closing position or contact of earth position, stroke limits
Bit switch damages or inoperative, then burn-down of electric motor or mechanical position limitation are deformed or fracture, cause
Switch main contact crosses position, is damaged by main switch, and this is extremely hazardous.
3. load weight considers deficiency to the change of output angle and position.Load is light, output
Angle increases, load weight, and output angle reduces, and so contact of isolation or earthed switch meets
Do not open away from the technology requirement with contacting travel.
4. transmission system not self-locking, mechanism produces at the deformation of transmission process, counter-force or main contact
Raw electrodynamic repulsion force, makes output shaft move in the opposite direction, and output angle reduces.
The most manually operated heavy.Not being the mechanism of lead screw transmission or Worm Wheel System, speed reducing ratio is little,
But the maximum input torque of main switch motion is definite value, it is desirable to manually operated wanting easily, meets machinery
Design man-machine engine request.
The most manually operated interlock is incomplete, disconnecting switch and earthed switch is manually operated is not
Respective independent handle hole, associates with on off state mechanical, with other switch element also mechanical
Interlocking, is easily generated maloperation.
Summary of the invention
It is an object of the invention to provide one and can solve above-mentioned technical problem, dependable performance, structure
Simply, isolating/grounding switch operation interlocking, interlock is complete, reliably, and has machinery guarantor
The Cubicle Gas-Insulated Switchgear three-station electric operation mechanism protected.
For reaching object above, the present invention adopts the following technical scheme that and is achieved:
The three-station electric operation mechanism of a kind of switchgear is by chassis component a, drives
Device b, manual interlock c, electrical control gear d tetra-part forms.Driving means b,
Manual interlock c, electrical control gear d, in the inside of chassis component a, are connected with
Being integrated, output shaft 46 reaches out the outside of base plate 3, with isolation/ground connection three position switch
Power shaft is connected by transmission device, it is achieved close, point, ground connection electronic and manually operated, opens
The position conversion closed.
Chassis component a is by box body 1, rectangle industry coupling 2,4, breathes vent window
28,12, side direction board 11, front direction board 18, end face direction board 99, valve 16,
21, padlock 20, chassis lid 96, handle 95, nameplate 97, engineering Sign Board 98, hasp 9,
13,24,29 compositions, are fixed on around box body and above lid, chassis lid 96 on request
Connecting with box body 1 hasp 9,13,24,29, at side direction board 11, front refers to
Show that board 18, end face direction board 99 have three instructions, can select according to actual needs；At two
Side is respectively arranged with a handle 95, and there are 2 valve 16,21 in front, has manually behaviour on it
Making code, at valve 16, the side of 21 can add electric power Special hanging lock 20；Have at two side faces
It is respectively arranged with one and breathes vent window 28,12.
In driving means b, it is secondary with gear that motor 30 output shaft end connects gear secondary 45
44 engagements, by gear pair 44,45/ worm-gears 31,56/ double rolling key clutch
Assembly 55, upper control axle rolling 35, lower control axle rolling 41, will move and power transmission will be to output shaft 46,
Output shaft 46 stretches out termination at plate outer side, by shaft coupling or linkage and isolation/ground connection
Switch power shaft connects, it is achieved close, sub-switching operation.Connect at the two ends of worm screw 31 and have umbrella tooth
On wheel D43 and bevel gear A32, bevel gear D43 and the second bevel gear hand-operational apparatus 39
42 bevel gear C engagements, operation handle 94 inserts the manually operated axle of earthed switch and closes, point
Lock operates, and closes a floodgate clockwise, and separating brake counterclockwise, bevel gear A32 is manually operated with bevel gear
The bevel gear B 33 that assembly axle 107 connects engages, and Manual operation handle 94 inserts axle 107,
Carry out keeping apart closing, sub-switching operation, rotate clockwise as closing a floodgate, rotate counterclockwise as separating brake,
First bevel gear hand-operational apparatus 36, the second bevel gear lays respectively at snail for manually operated group 39
The both sides of wheel；
Connect on worm gear 56 and have double rolling key clutch 55, on the both sides of 55 have, control axle rolling
35, lower axle rolling 41, the upper catch mechanism 47,48,49,50 that output shaft bilateral symmetry is arranged
Being semiaxis with lower catch mechanism 51,52,53,54,49 and 52, fixing top board has upper pallet
Semiaxis top board 50 and lower pallet semiaxis top board 51, upper catch element 47 can be around upper catch element rotating shaft
104 rotate, and lower catch element 1 can rotate around lower catch element rotating shaft 105, and first trips electricity
Upper pallet semiaxis top board 50 is clashed in the dynamic core ejector rod energising adhesive of magnet 17, makes pallet half
Axle 49 rotates and trips, and the second tripping magnet 23 is energized adhesive, and dynamic push rod unshakable in one's determination is pulled under clashing into
Sub-semiaxis top board 51 makes the rotation of lower pallet semiaxis 52 trip, and is fixedly connected with the installation end on base plate 3
Plate spacer pin 37, is fixedly connected with spacer pin 38 in the inner side of train wheel bridge 27.When disconnecting switch is closed a floodgate,
Motor 30 and the first tripping magnet 17 are energized simultaneously, make pallet semiaxis 49 rotate and trip,
Under motor 30 drives, control axle rolling on 35 and move, catch element 1 in driving, upper pallet
Part 2 48 pivoting, drives towards combined floodgate direction and moves, output shaft 46 to closing position, on
Control axle rolling 35 contacts under driving force effect with spacer pin 38, double rolling key clutch mechanical from
Closing, motor dallies.Meanwhile, on output shaft, end cam 61 contacting travel switch 59, cuts off control
Ring current processed, motor power-off, combined floodgate terminates.When cam 61 departs from travel switch 58, the
One tripping magnet 17 power-off, resets.During disconnecting switch separating brake, motor 30 drives two-way super
More clutch 55, upper control axle rolling 35, lower control axle rolling 41 rotates counterclockwise, upper control axle rolling 35
Contact with upper catch element 1 so that it is rotate around upper catch element rotating shaft 104, after both depart from
Upper catch element 1 automatically resets, and lower control axle rolling 41 goes to and lower pallet semiaxis top board 51,
Lower pallet semiaxis 52, lower catch element 2 53, lower catch element 1 contacts, and drives at motor
Double rolling key clutch 55 mechanical clutch under moment loading, motor dallies, meanwhile, cam 61
Contact with travel switch 58, contact action, cutting-off controlling ring current, motor power-off.
Earthed switch closes a floodgate；Motor 30 and the second electromagnet 23 are energized simultaneously, back down semiaxis 52
Tripping, motor 30 makes double rolling key clutch 55, upper control axle rolling 35, and lower control axle rolls 41,
Output shaft 46 rotates counterclockwise, and lower control axle rolling 41 makes lower catch element 2 53, lower catch element 1
Pivot and move to earthed switch combined floodgate direction, the lower catch element two of lower control axle rolling 41 disengaging
53, after lower catch element 1, cam 61 departs from travel switch 58, the second tripping magnet
23 power-off restorations, after lower control axle rolling 41 contacts with spacer pin 37, in motor driving force effect
Lower mechanical clutch, motor dallies, cam 61 position travel switch 57, motor contiguously simultaneously
Power-off, combined floodgate terminates.During grounding switch tripping, motor 30 is energized, drive bidirectional overtaking from
Clutch 55, lower control axle rolling 41, upper control axle rolling 35, output shaft 46 rotates clockwise, lower control
The lower catch element 1 of axle rolling 41 driving rotates around lower catch element rotating shaft 105, after disengaging, under
Catch element 1 resets, and upper control axle rolling 35 is driving masterpiece after contacting with upper catch element 1
Using lower mechanical clutch, motor dallies, simultaneously cam 61 contacting travel switch 58 so that it is action,
Motor power-off, grounding switch tripping motion terminates.
In driving means b, the output shaft sprocket wheel 62 that output shaft 46 connects indicates sprocket wheel with side
63, front instruction sprocket wheel 66 is connected by chain 60, forms Chain conveyer, and rotary shaft 101 makes
Gear 89 middle gear rotates, it is achieved the position switching of three station auxiliary switches, passes through bevel gear
E 64, bevel gear F 65 make side direction board 11 rotate, display switch location state；
In front instruction sprocket wheel 66 connecting shaft 86, bevel gear G 67, bevel gear H 68 engage,
Cam 84, output shaft rotation, front direction board 18, end face direction board 99 is connected on axle 103
Also rotating with, display switch present position, cam 84 rotates simultaneously, promotes ground hole to block up
Plate 85, clearance hole closure plate 83 moves, and pins Manual operation handle and blocks handle hole.
In manual interlock, clamping plate 80 front and back, 81 combine as a whole with anchorage bar, are fixed on
On negative 3, consolidate 72 inside front plate 80, the first travel switch；73, the second travel switch,
70, spring connects left guide plate 71,75 right guide plate 74,78,77 corner block of connection and is fixed on a left side
Guide plate 71, on right guide plate 74, is fixed with the first interlocking electromagnet in the outside of rear plate 81
22, the second interlocking electromagnet 15, connect clearance hole closure plate 83, ground hole closure plate 85, with 2
Clearance hole closure plate 83 is strained in individual extension spring 82, ground hole closure plate 85 contacts with cam 84.
Electrical control gear d uses three station auxiliary switches, gear 89, and 108 engage each other biography
Dynamic, it is achieved three position switchings.First auxiliary switch 5 closes for ground connection, and surface yellow, second is auxiliary
Helping switch 6 to divide for ground connection, surface is yellow and green, and the 3rd auxiliary switch 7 is isolation point, surface red
With green, the 4th auxiliary switch 8 closes for isolation, and surface is red.
In electrical control gear d, four contactors, a temperature and humidity controller, a meter
Number device and two rectangle industry couplings, reinstate wire with other electric elements one and be connected, and constitutes
Linear quadratic control and protective loop, it is achieved the program behavior of switch and protection.
Present invention advantage compared with background technology is: at splitting or integrating, earthing position mechanical position limitation,
Put in place mechanical clutch, accurate positioning, and output angle error is the least, stable.Drive train inertia
Size on position of output axle and angle all without impact；Owing to there being mechanical clutch to protect, also will not make
Mechanism motor is become to burn and mechanism, the damage of switchgear；Divide position pallet mechanical position limitation, no
There will be due to point position stroke switching damage or a loose contact, directly from closing to ground connection or ground connection
To closing, centre position ceaselessly fault；Use three station auxiliary switches, simplify drive mechanism；
Newly-designed manual interlock, simple in construction, interlock is complete, reliably；Due to worm gear
The self-locking of worm mechanism, eliminates counter-force, and deformation is on output angle and the impact of position；Due to
Worm and worm gear speed reducing ratio is big, manually operated easily.
Accompanying drawing explanation
The rough package drawing of Tu1Shi mechanism of the present invention；
Fig. 2 be the present invention be cabinet inside rough package drawing；
Fig. 3 is that driving means b is at a point position view；
Fig. 4 is that driving means b closes position view on ground；
Fig. 5 is that driving means b is closing position view；
Fig. 6 is to drive and in electrical control: travel switch and position instruction are at a point position view；
Fig. 7 is to drive and in electrical control: position view is being closed in travel switch and position instruction；
Fig. 8 is to drive and in electrical control: travel switch and position indicate at position schematic diagram；
Fig. 9 is manual interlock c schematic diagram；
Figure 10 is manual interlock c front portion schematic diagram；
Figure 11 is manual interlock c generalized section；
Figure 12 is that side indicates transmission schematic diagram；
Figure 13 is to drive and in electrical control: auxiliary switch position view；
Figure 14 is to drive and in electrical control: connect schematic diagram between auxiliary switch；
Figure 15 is the front view of chassis component a；
Figure 16 is chassis component a, Manual operation handle schematic diagram；
Figure 17 is the rearview of chassis component a；
Figure 18 is the right view of chassis component a；
Figure 19 is the left view of chassis component a；
In figure: a. chassis component；B. driving means；The most manual interlock；D. electrical control
Device；1. box body；2,4 rectangle industry couplings；3. base plate；5, the first auxiliary is opened
Close；6, the second auxiliary switch；7, the 3rd auxiliary switch；8, the 4th auxiliary switch；9,
13,24,29. hasps；10. coupling assembly between base plate and train wheel bridge；11, side direction board；
12,28, breathe vent window；14, counter；15,22, interlocking electromagnet；16,21,
Valve；17, the first tripping magnet；23, the second tripping magnet；18, front direction board；
19, front instruction axle；20, padlock；25, temperature and humidity controller；26, control relay；
27, train wheel bridge；30, motor；31, worm screw；32, bevel gear A；33, bevel gear B；
34, bevel gear bracing frame；35, upper control axle rolls；36, the first manually operated shaft assembly of bevel gear；
37, spacer pin；38, spacer pin；39, the second bevel gear hand-operational apparatus；40, umbrella tooth
Wheeling supporting frame；41, lower control axle rolls；42, bevel gear C；43, bevel gear D；44,45,
Gear is secondary；46, output shaft；47, upper catch element one；48, upper catch element two；49,
Upper pallet semiaxis；50, upper pallet semiaxis top board；51, lower pallet semiaxis top board；52, under pull
Sub-semiaxis；53, lower catch element two；54, lower catch element one；55, double rolling key clutch；
56, worm gear；57, position travel switch；58, point position travel switch；59, close position
Travel switch；60, chain；61, cam；62, output shaft sprocket wheel；63, side instruction chain
Wheel；64, bevel gear E；65, bevel gear F；66, front instruction sprocket wheel；67, bevel gear G；
68, bevel gear H；69, electric heater plate；70,75, extension spring；71, left guide plate；74,
Right guide plate；72,73, travel switch；76, isolator operation hole；77,78, corner block；
79, earthed switch handle hole；80, rear plate；81, front plate；82, extension spring；83, every
From hole closure plate；84, cam；85, ground hole closure plate；86, front instruction bevel gear component；
87, side instruction bracing strut；88, auxiliary switch installing plate；89, gear；90, auxiliary is opened
Close installing plate pillar；91, motor worm frame；92,93, the manually operated shaft supporting frame in left and right；
94, Manual operation handle；95, handle；96, chassis lid；97, nameplate；98, engineering mark
Know board；99, end face direction board；100, side instruction chain wheel assembly；101, side instruction chain
Wheel shaft；102, side instruction axle；103, axle；104, upper catch element rotating shaft；105, under pull
Component rotating shaft；106, the manually operated axle of earthed switch；107, the manually operated axle of disconnecting switch；
108. auxiliary switch gears；109. axle.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail
Describe.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
In the present embodiment, mechanism's output shaft turns to, and sets manually operated panel as positive apparent direction, defeated
Shaft, below cabinet, is overlooked from the top down: counterclockwise for closing-point-ground connection, clockwise for connecing
Ground-point-close；Otherwise also may be used.
Such as Fig. 1, shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8:
The three-station electric operation mechanism of switchgear is by chassis component a, driving means
B, manual interlock c, electrical control gear d tetra-part forms.Driving means b,
Manual interlock c, electrical control gear d, in the inside of chassis component a, with bolt even
Connecing and be integrated, output shaft 46 stretches out base plate 3, with the power shaft of isolation/ground connection three position switch
Connected by transmission device, it is achieved close, point, ground connection electronic and manually operated, the position of switch
Put conversion.
Chassis component a, is shown in Figure 15,17,18,19, is by box body 1, and rectangle industry joins
Connect device 2,4, breathe vent window 28,12, side direction board 11, front direction board 18, top
Face direction board 99, valve 16,21, padlock 20, chassis lid 96, handle 95, nameplate 97,
Engineering Sign Board 98, hasp 9,13,24,29 composition, be fixed on request box body and
The position of lid, chassis lid 96 connects with box body 1 hasp 9,13,24,29, in side
Face direction board 11, front direction board 18, end face direction board 99 has three instructions, can basis
It is actually needed setting；Be respectively arranged with a handle 95 two sides, there are 2 valve 16 in front,
21, on it, there is manually operated code, at valve 16, it is special that the side of 21 can add electric power
With padlock 20；It is respectively arranged with one at two side faces and breathes vent window 28,12.
Driving means b, is shown in Fig. 3,4,5: motor 30, worm screw 31 is connected in motor worm and props up
On frame 91, connect at worm screw two ends and have bevel gear A32, bevel gear D 43, assembly bolt
It is connected on base plate 3.It is with the first manually operated shaft assembly of bevel gear 36, the second bevel gear
On manually operated shaft assembly 39, bevel gear C 42, bevel gear B 33 form transmission, bevel gear
C 42, bevel gear B 33 connect firmly on manually operated axle, are arranged on the manually operated axle in left and right and prop up
Support 92, on 93, and is bolted on base plate 3, worm gear 56 connects and has two-way surpassing
More clutch 55, connects on double rolling key clutch 55 and has output shaft 46, at bidirectional overtaking
There is upper control axle rolling 35 on the upside of clutch, have axle rolling 41, worm gear clutch pack snail in downside
Wheel 56, double rolling key clutch 55, upper control axle rolling 35, lower control axle rolling 41, output shaft 46,
Upper catch element 1, upper catch element 2 48, lower pallet semiaxis 52, lower catch element 1,
Upper pallet semiaxis 49, upper pallet semiaxis top board 50, lower pallet semiaxis top board 51, lower pallet half
Axle 52, lower catch element 1, it is arranged between base plate 3 and train wheel bridge 27, uses securing member
Assembly 10 connects, the first tripping magnet 17, and the second tripping magnet 23 presss from both sides after being arranged on
On plate 80, inside base plate 3, connect firmly installation spacer pin 37, connect firmly limited inside train wheel bridge
Position pin 38, is fixed with travel switch 57 in the upside of train wheel bridge, and 58,59, output shaft upper end
Connect and have cam 61, output shaft sprocket wheel 62, front is installed between base plate 3 and train wheel bridge 27 and refers to
Showing bevel gear component 86, bevel gear G 67, bevel gear H 68 engages, bevel gear H 68 with
Front indicates 14 axles to connect.Instruction assembly axle in front connects firmly front instruction sprocket wheel 66；?
Connecting instruction sprocket wheel 63 in side on side instruction assembly 100 axle, bevel gear E 64, auxiliary is opened
Closing travelling gear 89 to be connected on axle 101, bevel gear F 65, side direction board 11 is connected to
On axle 102, it is assembled on side instruction bracing strut 87, bevel gear E 64, bevel gear F 65
Engage each other output shaft motion transmission to side direction board 11 and 5, the first auxiliary switch；6,
Second auxiliary switch；7, the 3rd auxiliary switch；8, the 4th auxiliary switch, side instruction axle props up
Frame is bolted on auxiliary switch installing plate 88,5 be also connected with on 88,
First auxiliary switch；6, the second auxiliary switch；7, the 3rd auxiliary switch；8, the 4th auxiliary
Switch, wherein 5 first auxiliary switches are that earthed switch closes a floodgate, surface plastic spraying yellow, 6 second
Auxiliary switch is that earthed switch divides, and plastic-blasting is yellow and green, and 7 the 3rd auxiliary switches are isolation
Switch point, surface plastic spraying is green and red, and 8 the 4th auxiliary switches are that disconnecting switch is closed a floodgate,
Surface plastic spraying is red.Have gear 89 below auxiliary switch, engage each other transmission motion and
Power, on auxiliary switch installing plate, riveting has pillar 90, links together with base plate 3 with bolt,
With chain 60 by output shaft sprocket wheel 62, side instruction sprocket wheel 63, front instruction sprocket wheel 66 is even
Connecing, constitute chain gear transmission, being connected to output shaft sprocket wheel 62 is driving link, by the three of output shaft
The conversion of position motion is transferred to side instruction, auxiliary switch, front instruction and manually operated hole
Location recognition.
Manual interlock c: such as Fig. 9, Figure 10, Figure 11, use clamping plate type structure, press from both sides afterwards
Plate 80 and front plate 81 connect as one with stud, and are connected on base plate 3 with screw,
Connecting in the inner side of rear plate 80 and have the first travel switch 72, the second travel switch 73, a left side is led
Plate 71, right guide plate 74, spring 70,75, left and right guide plate connects and has corner block 77,78,
79 is the manually operated hole of earthed switch, and 76 is the manually operated hole of disconnecting switch, at front plate 81
Outside connect have the first interlocking electromagnet 22, the second interlocking electromagnet 15, such as Figure 10
Shown in, ground hole closure plate 85, clearance hole closure plate 83 guide is connected to front plate 81
Outside, can horizontally slip, and connecting between ground hole closure plate 85 and clearance hole closure plate 83 has two
Root reset tension spring, sandwich cam 84, instruction axle 103 in front connects and has cam 84,
Front instruction ball 14, bevel gear H 68, they are arranged on before and after's clamping plate 80 and 81, in
Between a folder stop collar.
Electrical control gear d: such as Fig. 2, shown in Fig. 6, Fig. 7, Fig. 8, Figure 13, drive electricity
Machine uses AC/DC series excited machine, control contactor four 26, Temperature and Humidity Control relay
Device 25, counter 14 is connected on base plate 3, and 57 control travel switch for ground connection, and 58 are
Dividing position control travel switch, 59 are fixed on train wheel bridge 27 for closing position control travel switch
Upside, 5 first auxiliary switches be ground connection Guan Bi, 6 second auxiliary switches be point Guan Bi, 7
3rd auxiliary switch is isolation point Guan Bi, and 8 the 4th auxiliary switches are to close position Guan Bi, 27
The upside of clamping plate is further fixed on electric heater plate 69, the first tripping magnet 17, and second trips
Electromagnet 23 is fixed on rear plate 80, and torch interlocking travel switch is fixed on rear plate 80
Inner side, be fixed with the second interlocking electromagnet 15 in the outside of front plate 81, the second interlocking electricity
Magnet 22.
All electric elements link together by the requirement of linear quadratic control principle and installation diagram, it is achieved
The program behavior of three-station electric operation mechanism and protection, the requirement of detection.
The operating principle of three-station electric operation mechanism:
As Fig. 3 mechanism is in open position, clockwise for closing a floodgate, it is ground connection counterclockwise.
1), keep apart and close, sub-switching operation:
Closing operation: as Fig. 3, Fig. 5 show, motor 30 and the first tripping magnet 17 be energized,
Electromagnet moves iron core motion, and dynamic core ejector rod is clashed into upper pallet semiaxis top board 50 and rotated,
Being opened by semiaxis 49, motor output shaft is rotated through gear pair 44,45/ worm screw 31,
Worm gear 56/ double rolling key clutch 55/ drives upper control axle rolling 35, and upper pallet is given in upper control axle rolling 35
Part 1, upper catch element 2 48 exerts a force so that it is around solid System of Rotating about Fixed Axis, simultaneously drive output
Axle 46 rotates clockwise, output motion and power, when upper control axle rolling 35 disengaging is with upper
Catch element 1, upper catch element 2 48, electromagnet power-off, upper catch element 1, above pull
Component 2 48, upper pallet semiaxis 49, upper pallet semiaxis top board 50, the first tripping magnet
17 under the effect of back-moving spring, recovers to reset condition.Output shaft continues clockwise movement,
When to closing position, upper control axle rolling 35 and spacer pin 38 Mechanical Contact, in motor driving force
Under effect, double rolling key clutch Internal and external cycle separates, and plays spacing and protective effect, meanwhile,
See Fig. 6,7, cam 61 act on closing position control travel switch 59, control loop power-off,
Motor stops, and disconnecting switch combined floodgate motion terminates.When electric switch-on, output shaft turns clockwise
Dynamic, output shaft sprocket wheel 62, connect side instruction sprocket wheel 63, front instruction chain by chain 60
Take turns 66 transmissions, engaged by bevel gear E 64, bevel gear F 65, drive side direction board 11
Axle rotates, and the position that side instruction rotates up to close stops, and display disconnecting switch is in combined floodgate shape
State, side instruction sprocket wheel 63, axle 101 rotates, and drives set below gear 89 rotary motion,
After auxiliary switch switches to disconnecting switch closing position, stop motion.Front instruction sprocket wheel 66
Rotate, by bevel gear G 67, bevel gear H 68, make axle 103, cam 84 rotate, just
Face direction board 18 turns to conjunction position to stop from a point position, and meanwhile, cam 84 promotes ground hole to block up
Plate 85 and clearance hole closure plate 83, block ground connection handle hole.
Sub-switching operation: electrical power, by gear pair 45,44/ worm screw 31, worm gear 56/
Upper control axle rolling 35, lower control axle rolling 41, double rolling key clutch 55, drive output shaft 46 turns
Dynamic, output motion and power, as it is shown in figure 5, output shaft rotates counterclockwise, when upper control axle rolls
35 with upper catch element 1 Mechanical Contact, under the effect of driving force, upper control axle roll 35
In promotion, catch element one 47 rotates around upper catch element rotating shaft 104, and the rolling 35 of upper control axle is with upper
When catch element 1 departs from, upper catch element 1 resets under back-moving spring is made, output shaft
Rotate counterclockwise, lower control axle rolling 41 and lower pallet semiaxis top board 54, lower catch element 2 53,
Lower catch element semiaxis 52 Mechanical Contact, under driving force effect, inside and outside double rolling key clutch
Enclosing mechanically decoupled, dallying in outer ring, meanwhile, output shaft band moving cam 61 rotates, to a point position
Contact with travel switch 58, travel switch action, control loop and motor power-off, keep apart
Close separating brake motion to terminate.Meanwhile, during output shaft counterclockwise movement, driven auxiliary by transmission device
Helping switch contact to move, contact switches to disconnecting switch open position from closing position, and side indicates
Also a point state instruction is turned to from the instruction of conjunction state.Front indicates, and transmission device is passed through in end face instruction
Being converted to point from the instruction of conjunction state, cam 84 rotates, under the effect of spring 82, and ground hole
Closure plate 85 moves right, and clearance hole closure plate 83 is to left movement, isolation, the manually operated hole of ground connection
Open.
2) earthed switch closes, sub-switching operation:
Contact of earth operates: output shaft rotates counterclockwise.Such as Fig. 3, shown in Fig. 4.Motor and
Second tripping magnet 23 is energized simultaneously, and electromagnet push rod clashes into lower pallet semiaxis top board 51,
Make lower pallet semiaxis top board 51 open, trip.Motor makes lower control axle by actuator drives
Rolling force and lower catch element 2 53, lower catch element 1, pivoting, simultaneously drive output
Axle 46 rotates counterclockwise, and drives towards earthed switch closing position.To earthed switch closing position,
Lower control axle rolling 41 and spacer pin 37 Mechanical Contact are under motor driving moment effect, two-way super
More clutch 55 Internal and external cycle is mechanically decoupled, and motor dallies, and meanwhile, what output shaft connected firmly is convex
Wheel 61 also rotates counterclockwise, and contacts with travel switch 57, OK during to earthed switch closing position
Cheng Kaiguan 57 action, cutting-off controlling loop and electric motor loop power supply, earthed switch closes a floodgate and moves
Terminate.While output shaft 46 counterclockwise movement, by transmission device, end face indicates, just
Face indicates, and side instruction is converted to ground state instruction by a point state instruction, and the 5, first auxiliary is opened
Close；6, the second auxiliary switch；7, the 3rd auxiliary switch；8, the 4th auxiliary switch moving contact
Rotate, switch to earthed switch closing position from a point position, the cam 84 that axle 103 connects
Rotate counterclockwise, manually operated for disconnecting switch hole is blocked.
Grounding switch tripping operates: such as Fig. 4, shown in Fig. 8.Electrical power, is filled by transmission
Putting and make lower control axle rolling 41, output shaft 46 rotates clockwise, earthed switch closing position drive towards
Open position.Instantly control axle rolling 41 contacts with lower catch element 1, under driving force effect,
Lower catch element one 54 is around 105 times catch element axis of rotation, after two disengage, multiple
Under the spring effect of position, under part, catch element 1 is reset to home position.Output shaft 46 rotates
Meanwhile, the rolling of upper control axle 35 rotates clockwise, and upper catch element 1, upper catch element 2 48,
After upper pallet semiaxis 49 Mechanical Contact, under driving force effect, in double rolling key clutch 55
Outer ring is mechanically decoupled, and motor dallies, and the cam 61 that output shaft connects firmly also rotates clockwise,
When dividing position, contact with travel switch 58, travel switch 58 action, loop and electricity will be controlled
Electromechanical source cuts off, and earthed switch terminates from open position motion of closing a floodgate.Output shaft is in rotation
Meanwhile, by transmission device, drive end face direction board, side direction board, front direction board,
The location status of display is converted to from ground point, and auxiliary switch moving contact position is also from earthed switch conjunction
Gate position switches to open position.The cam 84 that front instruction axle connects firmly rotates clockwise, will
The manually operated hole of disconnecting switch is opened.
Isolating/grounding switch manually closes, sub-switching operation:
Keeping apart and close, separating brake is manually operated: such as Fig. 3, shown in 9, switch at open position,
Isolating, the manually operated hole of ground connection is all opened, and Manual operation handle 94 can be inserted into.Now,
As wanted disconnecting switch closing by hand to operate, open valve 16, six sides and first in operation handle
Bevel gear hand-operational apparatus 36 engages make-up, pushes hard on earth, and the rightest guide plate 74 is to the left
Mobile, the second travel switch 73 contact switching, motor control loop and motor power are cut off,
Close a floodgate for disconnecting switch clockwise, be disconnecting switch separating brake counterclockwise.Now switch is in sub-gate position
Put, clockwise turning operation handle, when observing instruction to closing position, double rolling key clutch
Internal and external cycle is mechanically decoupled, and handle rotates very light, is pinned by operation handle at the process closure plate closed,
Can do not pull out out, only put in place to postpone and just can extract.Earthed switch hole is blocked by closure plate, operation
Handle is inserted not enter, and only arrives open position, the most permissible；Disconnecting switch separating brake too, closes
Gate position, inserts Manual operation handle, rotates counterclockwise, to separating brake in isolator operation hole
Behind position, manually operated very light, now, extract operation handle, cover valve, screw butterfly
Shape nut, hangs up padlock, locks.
Earthed switch splitting or integrating lock is manually operated: such as Fig. 3, shown in 9, open with check mark key
Padlock 20, and unload, unclamp wing nut, open valve 21 and (must recognize before opening valve
True reading operations program, and follow procedure is operated sequentially), Manual operation handle 94 inserts hole
In 79, in bevel gear hand-operational apparatus 39 and 94, six side's make-ups, push hard on earth to platform
At rank, now, left guide plate 71 moves right, and promotes the first travel switch 72 contact action,
To control loop and electric motor loop dump, now switch is open position, rotates clockwise
Operation handle, earthed switch moves to combined floodgate direction, after in-place closing, bidirectional clutch machinery
Separate, manually operated the lightest.During ground connection is closed, clearance hole closure plate 83 is at cam
Under 84 drive, being blocked in manually operated for disconnecting switch hole 76, meanwhile, cam 84 drives and connects
Manual operation handle is pinned by hole, ground closure plate 85, and only in-place closing just can be extracted.Ground connection is opened
When closing separating brake, operation handle 94 rotates counterclockwise, to open position, inside and outside bidirectional clutch
Enclose mechanically decoupled, manually operated the lightest.After end of operation, extract Manual operation handle 94,
Closure flap 21, screws wing nut, hangs up padlock 20 and locks.
When power station maintenance needs locking mechanism, disconnecting switch and the manually operated hole of earthed switch
76,79 are inserted into deadlock lever 106, and add padlock 20, with update handle 94 program phase
Seemingly, the second interlocking electromagnet 15 during insertion, the first interlocking electromagnet 22 is charged, and sound is unshakable in one's determination
Adhesive, manually operated hole is unlimited, the first travel switch 72 or the second when inserting deadlock lever 106
Mechanism controls loop and motor power are cut off by travel switch 73 action, interlock first simultaneously
Electromagnet 22, the second interlocking electromagnet 15 loop cuts off, it is achieved locking.After mechanism's locking,
Can prevent other people from operating mechanism when ignorant, cause the infringement of personnel and equipment.
Such as Fig. 2, it is fixed with the first interlocking electromagnet 22 in the outside of front plate 81, second
Lock electromagnet 15, when interlock condition is unsatisfactory for, electromagnet is in electroless state, dynamic iron core
Under action of reset spring, horizontal before isolation and earthed switch handle hole, Manual operation handle
Can not insert, when interlock condition is set up, interlocking electromagnet is charged, sound iron core adhesive, will
Isolation and ground connection handle hole get out of the way.Control loop and the interlocking electromagnet loop of mechanism will be passed through
One " outside interlock circuit " is connected to power supply again, outside interlock circuit by power station with mechanism
The auxiliary switch contact of all switchgears that the switch of operation is correlated with is composed in series, the most relevant
All switchgear locations or state all allow this switch motion, outside interlock circuit
Just can turn on mechanism control loop and electromagnet loop just can switch on power, electromagnet just can lead to
Electricity, dynamic iron core adhesive, operation handle just can be inserted into and is operated manually.By the way,
Achieving between the manually operated of mechanism and electric operating, mechanism is manually operated (and electronic
Operation) and relevant switching device state between electric interlock, it is therefore prevented that maloperation.
The above is only the preferred embodiment of the present invention, it is noted that lead for this technology
For the those of ordinary skill in territory, on the premise of without departing from the technology of the present invention principle, it is also possible to
Making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a three-working-position electric operation mechanism for switching device, it is characterised in that described machine
Structure includes chassis component (a), driving means (b), manual interlock (c) and electric-controlled
Device (d) processed；Described driving means (b), manual interlock (c) and electrical control fill
Put (d) to connect as one, be placed in described chassis component (a)；
Described chassis component (a) includes the connection of manually operated hole, indicating window, casing and lid
Part, vent window, handle, connector and nameplate, mark；
Described driving means (b) include motor (30) gear secondary (45,44), worm screw (31),
Worm gear (56), double rolling key clutch (55), output shaft (46)；Described output shaft (46)
Upper connection output shaft sprocket wheel (62), described output shaft sprocket wheel (62) by chain (60) with
Side instruction sprocket wheel (63) and front instruction sprocket wheel (66) connect, and constitute Chain conveyer, by defeated
Shaft motion transmission assists to side direction board (11), front direction board (18) and three stations
Switch；
Described manual interlock (c) is used anchorage bar by rear plate (80), front plate (81)
It is formed by connecting, is fixed on base plate (3)；The inner side of clamping plate (80) connects in the rear has
First travel switch (72), the second travel switch (73), left guide plate (71), right guide plate (74)；
Connect in the outside of described front plate (81) and have the first interlocking electromagnet (22), the second interlocking
Electromagnet (15), and have clearance hole closure plate (83), ground hole closure plate (85) by guide connection；
Described clearance hole closure plate (83), ground hole closure plate (85) are under spring (82) pulling force effect
Against cam (84)；
Described electrical control gear (d) uses three station auxiliary switches, described three station auxiliary
Switch auxiliary switch travelling gear (89), auxiliary switch gear (108) engage each other transmission,
Realize three position switchings；
Described worm screw (31), bevel gear A (32), bevel gear D (43), worm gear (56),
Double rolling key clutch (55), upper control axle rolling (35), lower control axle rolling (41), bevel gear G
(67), catch mechanism be positioned between described base plate (3) and train wheel bridge (27), first trips
Electromagnet (17), the second tripping magnet (23) are fixed on described rear plate (80),
First bevel gear hand-operational apparatus (36), the second bevel gear hand-operational apparatus (39) position
In worm gear both sides, it is fixed on described base plate (3)；
Side instruction sprocket wheel (63), bevel gear E (64), auxiliary switch travelling gear (89)
Being connected on side instruction sprocket shaft (101), engagement drives side direction board (11) to rotate；
Front instruction sprocket wheel (66), bevel gear G (67) are connected on an axle (109), bevel gear
G (67) and bevel gear H (68) gear engages, and the upper connection of another axle (103) has umbrella tooth
Wheel H (68), cam (84) and front direction board (14)；
Described chassis component (a) include side direction board (11), front direction board (18) and
End face direction board (99)；Be respectively arranged with in described chassis component (a) both sides a handle (95) and
Breathe vent window (12,28)；There is isolation/ground connection only in the front of described chassis component (a)
Vertical manually operated hole, has hinged valve (16,21) on hole, described valve (16,
21) side is provided with padlock (20)；The box body (1) of described chassis component (a) and
Lid hasp (9,13,24,29) connects.
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levy and be, described worm screw (31) two ends each Connectable umbrella gear D (43) and bevel gear A (32),
Described bevel gear D (43) and the bevel gear C on the second bevel gear hand-operational apparatus (39)
(42) engagement, described bevel gear A (32) and the first bevel gear hand-operational apparatus (36)
On bevel gear B (33) engagement；Described first bevel gear hand-operational apparatus (36) and
Two bevel gear hand-operational apparatus (39) are separately mounted on bevel gear bracing frame (40,34),
And be connected on base plate (3), lay respectively at worm gear (56) and output shaft (46) both sides.
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levying and be, connecting in described worm gear (56) has double rolling key clutch (55), upper and lower two
Side has upper control axle rolling (35) and lower control axle rolling (41) respectively；At base plate (3) and train wheel bridge (27)
Inner side is fixedly connected with spacer pin (37,38).
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levy and be, described catch mechanism include catch element one (47), upper catch element two (48), on
Pallet semiaxis (49), upper pallet semiaxis top board (50) and lower pallet semiaxis top board (51), under
Pallet semiaxis (52), lower catch element two (53), lower catch element one (54), lay respectively at snail
Above and below Lun, it is arranged symmetrically in output shaft vertical center line both sides；Upper catch element one
(47) can rotate around upper catch element rotating shaft (104), have torsion spring above, at upper catch element two
(48) spacing；Lower catch element one (54) can rotate around lower catch element rotating shaft (105), on
There is torsion spring in face, spacing at lower catch element two (53).
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levying and be, bevel gear E (64) and bevel gear F (65) engages, and bevel gear F (65) is even
It is connected on side instruction axle (102).
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levy and be, the upper auxiliary switch travelling gear (89) connected in side instruction sprocket shaft (101)
Engage each other with the auxiliary switch gear (108) being connected on auxiliary switch square shaft, its transmission
Ratio is 1:1.
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levying and be, described three station auxiliary switches include the first auxiliary switch (5), the second auxiliary switch
(6), the 3rd auxiliary switch (7) and the 4th auxiliary switch (8), the dynamic of each auxiliary switch touches
Head axle is square shaft, and double-fracture, rotary motion, between each position, angle is 90 °.
The most according to claim 1, three-working-position electric operation mechanism for switching device, it is special
Levy and be, fix the in rear plate (80) inner side of described Manual operation interlocking apparatus (c)
One stroke switch (72), the second travel switch (73), left guide plate (71), right guide plate (74),
And strain with spring (70,75)；It is fixedly connected with three on left guide plate (71) and right guide plate (74)
Hornblock (77,78)；The outside of described front plate (81) connect have the first interlocking electromagnet (22),
Second interlocking electromagnet (15), and have clearance hole closure plate (83), ground connection by guide connection
Hole closure plate (85)；Described clearance hole closure plate (83), ground hole closure plate (85) are in spring (82)
Against cam (84) under pulling force effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288055.3A CN102354627B (en) | 2011-09-26 | 2011-09-26 | Three-working-position electric operation mechanism for switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288055.3A CN102354627B (en) | 2011-09-26 | 2011-09-26 | Three-working-position electric operation mechanism for switching device |
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| Publication Number | Publication Date |
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| CN102354627A CN102354627A (en) | 2012-02-15 |
| CN102354627B true CN102354627B (en) | 2016-08-24 |
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| CN201110288055.3A Expired - Fee Related CN102354627B (en) | 2011-09-26 | 2011-09-26 | Three-working-position electric operation mechanism for switching device |
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| CN102956381B (en) * | 2012-07-25 | 2015-04-22 | 厦门华电开关有限公司 | Mechanical and electric interlocking device of switching appliance |
| CN102983036A (en) * | 2012-10-30 | 2013-03-20 | 江苏精科智能电气股份有限公司 | Transmission device used for multi-station switch single phase and three-phase mechanical linkage |
| CN104299806A (en) * | 2013-07-18 | 2015-01-21 | 江苏精科智能电气股份有限公司 | Auxiliary transmission device used for multi-working-position electric operating mechanism |
| CN104298253B (en) * | 2014-09-28 | 2017-02-01 | 宁波舜利高压开关科技有限公司 | Three-station disconnecting switch station detection controller |
| CN104916472B (en) * | 2015-06-12 | 2017-03-22 | 中国西电电气股份有限公司 | Manual interlocking and locking device with three-station mechanism control point-to-point function |
| CN105097316B (en) * | 2015-08-04 | 2018-05-11 | 许继集团有限公司 | Three-position switch operation mechanism |
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| CN105702492A (en) * | 2016-03-17 | 2016-06-22 | 宁波兴邦电器有限公司 | Tri-position operating apparatus for switching device |
| CN106328429B (en) * | 2016-08-30 | 2018-01-09 | 中国西电电气股份有限公司 | A kind of single motor three position mechanism with the mechanical interlocked unlocking functions of DS and ES |
| CN106373806B (en) * | 2016-08-31 | 2018-06-15 | 中国西电电气股份有限公司 | A kind of single motor three position mechanism power locking and its set composite of unlock and interlocking |
| CN107068435B (en) * | 2017-06-09 | 2019-08-02 | 河南润蒲电力科技有限公司 | A kind of three-station electric operating mechanism used for high-voltage switch |
| CN107564749A (en) * | 2017-09-20 | 2018-01-09 | 陕西得瑞电力设备有限责任公司 | A kind of high-precision three-station electric powder operation device |
| CN108832522B (en) * | 2018-07-10 | 2019-09-03 | 成都中工电气工程有限公司 | Contact net online switchboard assembly |
| CN109036893A (en) * | 2018-08-15 | 2018-12-18 | 北京合纵科技股份有限公司 | A kind of three-station electric operating mechanism |
| CN109524272B (en) * | 2018-11-09 | 2023-06-20 | 北京飞卡科技有限公司 | Plug-in coaxial change-over switch |
| CN109599293B (en) * | 2018-12-20 | 2020-10-23 | 河南平高电气股份有限公司 | Intermittent transmission device and operating mechanism for switching device |
| CN111585181B (en) * | 2020-06-02 | 2021-11-09 | 上海电气集团股份有限公司 | Indicator for low-voltage switch cabinet |
| CN112185748A (en) * | 2020-10-29 | 2021-01-05 | 江苏邦泰电气有限公司 | Three-station mechanism common-box GIS grounding switch |
| CN117275993A (en) * | 2023-09-26 | 2023-12-22 | 西安西电高压开关操动机构有限责任公司 | Commutation isolating switch operating mechanism and operating method thereof |
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