CN109088346A - A kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism - Google Patents
A kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism Download PDFInfo
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- CN109088346A CN109088346A CN201811171265.2A CN201811171265A CN109088346A CN 109088346 A CN109088346 A CN 109088346A CN 201811171265 A CN201811171265 A CN 201811171265A CN 109088346 A CN109088346 A CN 109088346A
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- China
- Prior art keywords
- locking plate
- drive screw
- mounting bracket
- low voltage
- slide plate
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Drawers Of Furniture (AREA)
Abstract
A kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism.It is characterized by: the drive screw and roller bearing locating piece use metalwork；The roller bearing locating piece includes firm banking and at least two rollers being vertically arranged, the roller is arranged along drive screw axial direction direction time interval, the roller lower end is rotatably installed on firm banking by bearing, and upper end can be protruded into the helicla flute of drive screw to be cooperated with drive screw transmission.It the advantage is that the drive screw and roller bearing locating piece be all made of ferrous material, so that it is influenced small by environment temperature, structure is more stable, effectively avoids the generation of fracture defect.And roller bearing locating element structure is simple, and assembling is also very convenient, and when with the cooperation of the helicla flute of drive screw, its own can also be rotated roller, and it is lighter when not only operating, but also ensure to be not in stuck problem.
Description
Technical field
The present invention relates to a kind of low voltage draw-out switchgears, promote interlocking more particularly to a kind of low voltage drawing-out switching carbinet
Mechanism.
Background technique
In modern power distribution network and engineering construction, extractable low-voltage power distribution cabinet is widely used in power plant, electric substation, factories and miness
The distribution system of the applications such as enterprise and skyscraper.Due to its special working characteristics, distribution industry is interior to power distribution cabinet
Design has strict requirements.
It is provided in standard GB/T 7251, in extractable low-voltage power distribution cabinet, the drawer in each circuit should have even
The propulsion that connects, test, being isolated on three positions, extraction operating mechanism.Mechanism should corresponding position can propulsion freely, take out
Out, and position is self-locking.
If Chinese invention patent (CN101217229B) discloses a kind of low pressure drawer type driving mechanism applied for switchboard drawer,
Determine including the precession mechanism for pushing drawer to move in cabinet body, the screwing mechanism drving sprial and the groove profile coincideing with drving sprial
Position part can drive drawer to move linearly along cabinet body by rotary drive spiral, by this structure, can guarantee drawer by
When to propulsive thrust, skew will not occur because of stress, generate mechanical movement dead point.
But groove profile locating piece generallys use plastic material, be affected by temperature it is bigger, especially on extremely cold country ground
Area is easy to appear breakage problem, and the normal power supply for seriously affecting switchgear uses.If more using such as irony by groove profile locating piece
Reliable metal material, not only processing difficulties, and also it is at high cost, nor reasonable choosing.
Therefore, it is badly in need of providing easy to process, at low cost, the more reliable and more stable location structure of one kind to substitute existing slot
Type locating piece solves above-mentioned fracture defect, it is ensured that operates normally and uses.
Summary of the invention
In order to overcome the shortcomings of that background technique, the present invention provide a kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism.
The technical solution adopted in the present invention: a kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism, including mounting bracket,
Propulsive mechanism, position detent mechanism and interlocking mechanism；The propulsive mechanism is mounted in mounting bracket, for pushing drawer to exist
It is moved in cabinet body；The position detent mechanism is mounted in mounting bracket, and is linked with propulsive mechanism, and propulsive mechanism is used for
Positioning when in four connection, test, isolation, extraction positions；The propulsive mechanism includes being mounted on rear side of mounting bracket
Drive screw, and installation are adapted to the roller bearing locating piece for pushing drawer to be moved forward and backward with drive screw on the cabinet；It is described
Drive screw and roller bearing locating piece use metalwork；The roller bearing locating piece includes firm banking and at least two
The roller being vertically arranged, the roller are arranged along drive screw axial direction direction time interval, and the roller lower end can by bearing
It is rotationally mounted on firm banking, upper end can be protruded into the helicla flute of drive screw to be cooperated with drive screw transmission.
The drive screw front end is connected with main transmission tooth, and the position detent mechanism includes the shelves driven by pushing mechanism
Position disk, the main transmission tooth drive the gear disc spins by gear transmission unit；The outer ring of main transmission tooth front end is set
There is lock toothing, retaining locking plate is movably set in the mounting bracket, the stopping lock on piece is equipped with to be adapted to lock toothing
Clamping portion, and the retaining locking plate has clamping portion and locks the dead first position and clamping portion of toothing phase clamping lock and lock tooth
The second position of structure separation unlock.
The main transmission tooth front end surface is equipped with crank way, and sliding is provided with slide plate, the slide plate in the mounting bracket
Equipped with the operating groove being adapted to crank way, there is the third place for blocking crank way and operating groove dew corresponding with crank way
4th position of crank way out；The slide plate is linked with retaining locking plate, and retaining locking plate is in when slide plate is in the third place
First position, retaining locking plate is in the second position when slide plate is in four positions.
The stopping lock on piece is extended with linkage portion, and the linkage portion is corresponding with slide plate end；The retaining locking plate with
The first elastic component for driving the movement of retaining locking plate to block clamping portion mutually with lock toothing is additionally provided between mounting bracket.
The retaining locking plate and mounting bracket are hinged, and first elastic component uses torsional spring.
It further include interlock assembly, the interlock assembly includes cam bit, locking plate, the second elastic component；The cam bit and shelves
Position disk coaxial arrangement, excircle are equipped with arc groove corresponding with Lian Jie, testing position respectively；The locking plate is arranged in cam
Below piece, and it is equipped with the arc boss being adapted to arc groove, described locking plate one end is hinged in mounting bracket, and the other end can be with
Slide plate limit cooperation, and the second elastic component is connected, second elastic component can drive locking plate to be adjacent to cam bit；The locking plate is equipped with
Cooperate when arc boss and cam bit outer ring cooperate with the 5th position of slide plate limit cooperation and arc boss and arc groove
When the 6th position that is separated with slide plate.
The gear disk be equipped with along excircle be equipped with respectively with connection, test, isolation, extraction four positions corresponding four
A locating slot, the mounting bracket are equipped with the elastic spring being in the shape of the letter V, and the middle spring protrusion and locating slot of elastic spring are suitable
Match, the elastic spring spirals in the gear and goes to four connection, test, isolation, extraction positions, can be correspondingly embedded in positioning
In slot.
The beneficial effects of the present invention are: the 1, drive screw and roller bearing locating piece are all made of ferrous material, so that
It is influenced small by environment temperature, and structure is more stable, effectively avoids the generation of fracture defect, and roller bearing locating piece knot
Structure is simple, and assembling is also very convenient, and when with the cooperation of the helicla flute of drive screw, its own can also be rotated roller, not only be operated
Shi Gengjia is light, and ensures to be not in stuck problem.
2, setting lock toothing and retaining locking plate engaged therewith on main transmission tooth can be by only after combined floodgate
It moves back locking plate and locks main transmission tooth, so that locked drive screw not can rotate, it is ensured that drawer is not in the problem of pine moves back play, greatly
The service life for extending plug-in unit and electrical equipment greatly, reduces failure rate.
Detailed description of the invention
Fig. 1 is the side view of low voltage drawing-out switching carbinet of embodiment of the present invention propulsion interlocking mechanism.
Fig. 2 is the side view of roller bearing of embodiment of the present invention locating piece.
Fig. 3 is that low voltage drawing-out switching carbinet of embodiment of the present invention propulsion interlocking mechanism slide plate is in the 4th position, the lock
Piece is in structural schematic diagram when five positions.
Fig. 4 is that low voltage drawing-out switching carbinet of embodiment of the present invention propulsion interlocking mechanism slide plate is in the 4th position, the lock
Piece is in structural schematic diagram when six positions.
Fig. 5 is that low voltage drawing-out switching carbinet of embodiment of the present invention propulsion interlocking mechanism slide plate is in the third place, the lock
Piece is in structural schematic diagram when six positions.
Fig. 6 is the installation of low voltage drawing-out switching carbinet of the embodiment of the present invention propulsion interlocking mechanism retaining locking plate and interlock assembly
Structural schematic diagram.
Fig. 7 is the structural schematic diagram of retaining of embodiment of the present invention locking plate.
Fig. 8 is the position detent mechanism structural representation of low voltage drawing-out switching carbinet of embodiment of the present invention propulsion interlocking mechanism
Figure.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing:
As shown, a kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism, including mounting bracket 1, propulsive mechanism 2, position are fixed
Position mechanism 3,
As shown, the mounting bracket 1 is bolted connection together by fore-stock, middle bracket, after-poppet, facilitate production
Product assembling.
As shown, the propulsive mechanism 2 is mounted in mounting bracket 1, it is described for pushing drawer to move in cabinet body
Propulsive mechanism 2 includes the drive screw 21 for being mounted on 1 rear side of mounting bracket, and installation is adapted to drive screw 21 on the cabinet
The roller bearing locating piece 22 for pushing drawer to be moved forward and backward.
Wherein, the drive screw 21 is all made of ferrous material with roller bearing locating piece 22, so that it is by environment temperature
Influence it is small, structure is more stable, effectively avoids the generation of fracture defect.
The roller bearing locating piece 22 is described solid then including firm banking 221 and two rollers 222 being vertically arranged
Pedestal 221 is determined equipped with screw hole, can be screwed installation on the cabinet, the roller 222 is along 21 axis of drive screw
It is arranged to direction time interval, 222 lower end of roller is rotatably installed on firm banking 221 by bearing 223, upper end
It can protrude into the helicla flute of drive screw 21 and cooperate with the transmission of drive screw 21, structure is simple, assembles also very convenient.
When rotary drive screw rod 21, by the cooperation of its helicla flute and roller 222, back-and-forth motion can be realized, push
Drawer moves in cabinet body, since roller 222 is rotatably installed on firm banking 221 by bearing 223, roller
222 when with the cooperation of the helicla flute of drive screw 21, its own can also be rotated, lighter when not only operating, but also ensures not
It will appear stuck problem.
As shown, 21 front end of drive screw is connected with main transmission tooth 23,23 front end surface of main transmission tooth is set
There is a crank way 232, crank way 232 is used to cooperate with tool, and facilitate and main transmission tooth 23 is driven to rotate, 23 turn of main transmission tooth then band
Dynamic drive screw 21 rotates synchronously.
Wherein, polygon boss or other similar can also be used certainly in the structure of polygon in the crank way 232
Structure is not limited to using crank way.
As shown, the elastic spring 32 that the position detent mechanism 3 includes gear disk 31, is in the shape of the letter V, the elasticity spring
Piece 32 is fixed in mounting bracket 1, the gear disk 31 be equipped with along excircle be equipped with respectively with connection, test, be isolated, extraction
Corresponding four locating slots 311 in four positions, the gear disk 31 are connected by transmission mechanism with drive screw 21, are rotated
21 energy synchronous drive gear disk 31 of drive screw rotates, when propulsive mechanism 2 is moved to the positions such as connection, test, isolation, extraction
When, elastic spring 32 can just cooperate with the locating slot 311 of 31 corresponding position of gear disk simultaneously, position when elastic spring 32 is embedded in
When slot 311, moreover it is possible to the sound of " click " is issued, to realize that its position positions.
As shown, the main transmission tooth 23 drives the gear disk 31 to rotate by gear transmission unit, but due to
It is driven using multiple gears, therefore it certainly exists certain gap, causes drive screw 21 to swing greatly, influence drawer and push away
Progress journey play is unstable, and vibration when especially receiving electric wave or divide-shut brake, tripping after drawer is advancing to the position will drive pumping
Slight play before and after drawer, easily causes that interposer contact is bad, and then influences the service life of plug-in unit and making for related electric facility
Use the service life.
Therefore, the outer ring of 23 front end of main transmission tooth is equipped with lock toothing 231, activity setting in the mounting bracket 1
There is retaining locking plate 4, the retaining locking plate 4 is equipped with the clamping portion 41 being adapted to lock toothing 231, and the retaining locking plate 4 has
The first position and clamping portion 41 for having clamping portion 41 dead with 231 phase clamping lock of toothing is locked separate unlock with lock toothing 231
The second position.By the way that lock toothing 231 and retaining locking plate 4 engaged therewith are arranged on main transmission tooth 23, after combined floodgate,
Main transmission tooth 23 can be locked by retaining locking plate 4, so that locked drive screw 21 not can rotate, it is ensured that drawer is not in pine
The problem of moving back play substantially prolongs the service life of plug-in unit and electrical equipment, reduces failure rate.
As shown, sliding is provided with slide plate 5 in the mounting bracket 1, the slide plate 5 is equipped with the behaviour being adapted to crank way
Make slot 51, there is the third place and the exposing crank way 232 corresponding with crank way 232 of operating groove 51 for blocking crank way 232
The 4th position；When needing to operate, opens slide plate 5 and expose crank way, when not needing to shake in use, then closing slide plate 5 and blocking
Hole, it is ensured that maloperation of the non-working person to it.
Further, the slide plate 5 can be linked with retaining locking plate 4, when slide plate 5 is in the third place
Retaining locking plate 4 is in first position, and when slide plate 5 is in four positions, retaining locking plate 4 is in the second position, further increases behaviour
The convenience and reliability of work.
Wherein, the retaining locking plate 4 is hinged with mounting bracket 1, and linkage portion 42 is extended on the retaining locking plate 4, described
Linkage portion 42 is corresponding with 5 end of slide plate, is additionally provided between the retaining locking plate 4 and mounting bracket 1 and retaining locking plate 4 is driven to act
Clamping portion 41 is set to use torsional spring with the first elastic component 6 of 231 phase card of toothing, first elastic component 6 is locked.
When slide plate 5 is in the third place, retaining locking plate 4 rotates under the action of torsional spring, automatic to realize and lock toothing
231 is stuck, and when slide plate 5 is in the third place, end can offset with the linkage portion 42 of retaining locking plate 4, overcomes the bullet of torsional spring
Property power, push retaining locking plate 4 rotate, make its clamping portion 41 be detached from lock toothing 231.
Certainly, it is not limited to hingedly, be also possible to sliding cooperation, using hinged between retaining locking plate 4 and mounting bracket 1
Mode can make topology layout more rationally compact, avoid interfering with other component, certainly, the first elastic component also not office
It is limited to torsional spring, is also possible to tension spring or spring.
As shown, further including interlock assembly 7, the interlock assembly 7 includes cam bit 71, locking plate 72, the second elastic component
73；The cam bit 71 is coaxially disposed with gear disk 31, and it is recessed that excircle is equipped with arc corresponding with Lian Jie, testing position respectively
Slot 711；The locking plate 72 is arranged below cam bit 71, and is equipped with the arc boss 721 being adapted to arc groove 711, described
72 one end of locking plate is hinged in mounting bracket 1, and the other end can be limited with slide plate 6 to be cooperated, and connects the second elastic component 73, and described the
Two elastic components 73 can drive locking plate 72 to be adjacent to cam bit 71；The locking plate 72 is equipped with arc boss 721 and matches with 71 outer ring of cam bit
It is separated when cooperating with the 5th position of the limit cooperation of slide plate 5 and arc boss 721 with arc groove 711 when conjunction with slide plate 5
6th position.
Only when drive screw 21 is in connection or testing position, arc boss 721 and the cam bit 71 of locking plate 72
Arc groove 711 matches, and locking plate 72 can be lifted up under the action of the second elastic component 73, could carry out to slide plate 5
Slide；When drive screw 21 is not accurate is in connection or testing position, the arc boss 721 and cam bit 71 of locking plate 72
Outer circle fitting, cam bit 71 squeezes locking plate 72, and the elastic reaction for making locking plate 72 overcome the second elastic component 73 blocks downwards
Dead slide plate 5.This structure not only ensure that the reliability and convenience of operation, but also ensuring will not between drawer and lower drawer
It interferes, avoids generating the problem of interfering with each other, bringing unsafe disturbing factor.
Embodiment is not construed as the limitation to invention, but any based on spiritual improvements introduced of the invention, all Ying Ben
Within the protection scope of invention.
Claims (7)
1. a kind of low voltage drawing-out switching carbinet propulsion interlocking mechanism, including mounting bracket (1), propulsive mechanism (2), position localization machine
Structure (3)；The propulsive mechanism (2) is mounted on mounting bracket (1), for pushing drawer to move in cabinet body；The position is fixed
Position mechanism (3) is mounted on mounting bracket (1), and is linked with propulsive mechanism (2), for propulsive mechanism (2) be in connection,
Positioning when four test, isolation, extraction positions；
It is characterized by: the propulsive mechanism (2) includes the drive screw (21) being mounted on rear side of mounting bracket (1), Yi Jian
Dress is adapted to the roller bearing locating piece (22) for pushing drawer to be moved forward and backward with drive screw (21) on the cabinet；
The drive screw (21) and roller bearing locating piece (22) use ferrous material；
The roller bearing locating piece (22) includes firm banking (221) and at least two rollers (222) being vertically arranged, institute
It states roller (222) to arrange along drive screw (21) axial direction time interval, roller (222) lower end passes through bearing (223)
It is rotatably installed on firm banking (221), upper end can protrude into the helicla flute of drive screw (21) and drive screw (21)
Transmission cooperation.
2. low voltage drawing-out switching carbinet propulsion interlocking mechanism according to claim 1, it is characterised in that: the drive screw
(21) front end is connected with main transmission tooth (23), and the position detent mechanism (3) includes the gear disk driven by pushing mechanism (2)
(31), the main transmission tooth (23) drives the gear disk (31) to rotate by gear transmission unit；
The outer ring of main transmission tooth (23) front end is equipped with lock toothing (231), is movably set with only on the mounting bracket (1)
It moves back locking plate (4), the retaining locking plate (4) is equipped with the clamping portion (41) being adapted to lock toothing (231), and the retaining locking plate
(4) first position and clamping portion (41) dead with toothing (231) phase clamping lock is locked with clamping portion (41) and lock toothing
(231) second position of separation unlock.
3. low voltage drawing-out switching carbinet propulsion interlocking mechanism according to claim 2, it is characterised in that: the main transmission tooth
(23) front end surface is equipped with crank way (232), slides and is provided with slide plate (5) on the mounting bracket (1), the slide plate (5) sets
There is the operating groove (51) being adapted to crank way, there is the third place for blocking crank way (232) and operating groove (51) and shake
Hole (232) corresponding the 4th position for exposing crank way (232)；
The slide plate (5) is linked with retaining locking plate (4), and retaining locking plate (4) is in first when slide plate (5) is in the third place
Position, retaining locking plate (4) is in the second position when slide plate (5) is in four positions.
4. low voltage drawing-out switching carbinet propulsion interlocking mechanism according to claim 3, it is characterised in that: the retaining locking plate
(4) it is extended on linkage portion (42), the linkage portion (41) is corresponding with slide plate (5) end；The retaining locking plate (4) and installation
The first elasticity for driving retaining locking plate (4) movement to block clamping portion (41) mutually with lock toothing (231) is additionally provided between bracket (1)
Part (6).
5. low voltage drawing-out switching carbinet propulsion interlocking mechanism according to claim 4, it is characterised in that: the retaining locking plate
(4) hingedly with mounting bracket (1), first elastic component (6) uses torsional spring.
6. low voltage drawing-out switching carbinet propulsion interlocking mechanism according to claim 5, it is characterised in that: further include interior lock machine
Structure (7), the interlock assembly (7) include cam bit (71), locking plate (72), the second elastic component (73)；
The cam bit (71) and gear disk (31) are coaxially disposed, and excircle is equipped with corresponding with Lian Jie, testing position respectively
Arc groove (711)；
Locking plate (72) setting is equipped with the arc boss being adapted to arc groove (711) below cam bit (71)
(721), described locking plate (72) one end is hinged on mounting bracket (1), and the other end can be limited with slide plate (6) to be cooperated, and connects the
Two elastic components (73), second elastic component (73) can drive locking plate (72) to be adjacent to cam bit (71)；
The locking plate (72) is equipped with the with slide plate (5) limit cooperation when arc boss (721) and cam bit (71) outer ring cooperate
The 6th position that five positions and arc boss (721) separate when cooperating with arc groove (711) with slide plate (5).
7. low voltage drawing-out switching carbinet propulsion interlocking mechanism according to claim 2, it is characterised in that: the gear disk
(31) be equipped with along excircle be equipped with respectively with connection, test, isolation, corresponding four locating slots (311) in four positions of extraction,
The mounting bracket (1) is equipped with the elastic spring (32) being in the shape of the letter V, the middle spring protrusion and locating slot of elastic spring (32)
(311) it being adapted to, the elastic spring (32) rotates in the gear disk (31) extremely to be connected, test, isolation, extracts four positions out,
It can be correspondingly embedded in locating slot (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171265.2A CN109088346B (en) | 2018-10-09 | 2018-10-09 | Low-voltage draw-out type switch cabinet pushing interlocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171265.2A CN109088346B (en) | 2018-10-09 | 2018-10-09 | Low-voltage draw-out type switch cabinet pushing interlocking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109088346A true CN109088346A (en) | 2018-12-25 |
| CN109088346B CN109088346B (en) | 2020-01-10 |
Family
ID=64843270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811171265.2A Active CN109088346B (en) | 2018-10-09 | 2018-10-09 | Low-voltage draw-out type switch cabinet pushing interlocking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109088346B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165016A (en) * | 2020-10-20 | 2021-01-01 | 瑞安市华泰电器厂 | Interlocking operating mechanism of low-voltage draw-out type switch cabinet |
| CN113725019A (en) * | 2021-08-26 | 2021-11-30 | Abb股份公司 | Switch operating device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206135285U (en) * | 2016-11-07 | 2017-04-26 | 瑞安市华泰电器厂 | Propulsion interlocking device of low pressure pull -out type cubical switchboard |
| CN207010057U (en) * | 2017-07-18 | 2018-02-13 | 温州市中意锁具电器有限公司 | A kind of propulsion of low-tension switch cabinet, combined floodgate interlocking gear |
-
2018
- 2018-10-09 CN CN201811171265.2A patent/CN109088346B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206135285U (en) * | 2016-11-07 | 2017-04-26 | 瑞安市华泰电器厂 | Propulsion interlocking device of low pressure pull -out type cubical switchboard |
| CN207010057U (en) * | 2017-07-18 | 2018-02-13 | 温州市中意锁具电器有限公司 | A kind of propulsion of low-tension switch cabinet, combined floodgate interlocking gear |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165016A (en) * | 2020-10-20 | 2021-01-01 | 瑞安市华泰电器厂 | Interlocking operating mechanism of low-voltage draw-out type switch cabinet |
| CN113725019A (en) * | 2021-08-26 | 2021-11-30 | Abb股份公司 | Switch operating device |
| CN113725019B (en) * | 2021-08-26 | 2023-09-15 | Abb股份公司 | switch operating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109088346B (en) | 2020-01-10 |
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