CN107293427A - A kind of interlock of earthed switch and front/rear door - Google Patents
A kind of interlock of earthed switch and front/rear door Download PDFInfo
- Publication number
- CN107293427A CN107293427A CN201710676807.0A CN201710676807A CN107293427A CN 107293427 A CN107293427 A CN 107293427A CN 201710676807 A CN201710676807 A CN 201710676807A CN 107293427 A CN107293427 A CN 107293427A
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- China
- Prior art keywords
- earthed switch
- lock bolt
- linkage board
- door lock
- interlock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 16
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008450 motivation Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 206010014357 Electric shock Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- Lock And Its Accessories (AREA)
- Patch Boards (AREA)
Abstract
Earthed switch and the interlock of front/rear door that the present invention is provided, including：Earthed switch operating shaft, connects earthed switch, is changed by rotating between power-on servicing and power operation；Front door lock bolt, for being locked to front door；Back door lock bolt, for being locked to back door；Link gear, is connected with the front door lock bolt, and the earthed switch operating shaft is positive, under counter-rotational control, drives the front door lock bolt to unlock or locking；Blocking mechanism, is arranged between the back door lock bolt and the link gear, and is stopped when the link gear is moved to locked position of coupler by the link gear, limits the back door locking mechanism and is moved towards unlocking direction；The device can be interlocked to the front door and back door of switch cubicle simultaneously, simple and reliable for structure.
Description
Technical field
The present invention relates to switch cubicle technical field, and in particular to a kind of interlock of earthed switch and front/rear door.
Background technology
When high-tension switch cabinet breaks down or overhauls, in order to ensure personal safety, earthed switch is operated after must closing a floodgate
Personnel could enter, therefore the interlocking of earthed switch and door is indispensable in high-tension switch gear.In high-tension switch cabinet
To accomplish in operating process " five prevent "：1st, the vacuum circuit breaker dolly in high-tension switch cabinet is after experimental site combined floodgate, and dolly breaks
Road device cannot be introduced into operating position；2nd, the earthing in high-voltage switch gear is when closing position, and dolly breaker can not be closed a floodgate；3rd, it is high
The vacuum circuit breaker compressed switch in cabinet is in combined floodgate work, machinery and cabinet door locking on the earthing of disk cabinet back door；4th, high pressure
Vacuum circuit breaker in switch cubicle is operationally closed a floodgate, and splice grafting earthing knife-switch can not be put into；5th, the vacuum circuit breaker in high-tension switch cabinet
When operation is closed a floodgate in work, it is impossible to exit the operating position of dolly breaker.
Chinese patent literature CN206194632U discloses a kind of earthed switch of switch cubicle and the interlock of door, including
Earthed switch operating shaft, connects earthed switch, is changed between power-on servicing and power operation；Latching device, with being arranged on
Rod bolt and the latch aperture plate that is engaged between the door leaf and doorframe of door；Transmission mechanism, by the earthed switch operating shaft with it is described
Rod bolt be connected, in power-on servicing, the rod bolt and the corresponding latch aperture plate are sealed, and in power operation the door bolt
Pin is unlocked with the corresponding latch aperture plate.
Above-mentioned prior art can realize the interlocking of the circuit breaker chamber door and cable chamber door at the front door of switch cubicle simultaneously, back door
Interlocking will be realized separately through the interlock between back door and operating shaft, cause the number of parts in switch cubicle more, be grasped
Make unreliable.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome the interlock in switch cubicle of the prior art can only
The defect of switch and preceding gate interlock is grounded, so as to provide a kind of earthed switch with front/rear door while the interlock interlocked.
Unresolved above-mentioned technical problem, a kind of earthed switch and the interlock of front/rear door that the present invention is provided, including：
Earthed switch operating shaft, connects earthed switch, is changed by rotating between power-on servicing and power operation；
Front door lock bolt, for being locked to front door；
Back door lock bolt, for being locked to back door；
Link gear, is connected with the front door lock bolt, and the earthed switch operating shaft is positive, counter-rotational control
Under, drive the front door lock bolt to unlock or locking；
Blocking mechanism, is arranged between the back door lock bolt and the link gear, and be moved in the link gear
Stopped during locked position of coupler by the link gear, limit the back door locking mechanism and moved towards unlocking direction.
The link gear includes
Linkage board, is connected with the front door lock bolt, can come and go and be slidably arranged on substrate；
Reversing transmission mechanism, is arranged between the linkage board and the front door lock bolt, and the driving of the linkage board is turned
It is changed to the driving for driving the front door lock bolt moving direction；
Voltage biasing structure is resetted, its partial pressure drives the linkage board towards locked position of coupler direction on the linkage board
It is mobile；
Integrated structure, is arranged between the earthed switch operating shaft and the linkage board, and in earthed switch behaviour
Make axle towards unlocking direction rotate when, overcome it is described reset voltage biasing structure biasing force, by the rotation of the earthed switch operating shaft
Power is converted to the power for driving the linkage board to be moved towards lockset position of coupler direction.
The linkage board can come and go be slidably arranged on the substrate in the first direction, the front door lock bolt along perpendicular to
The second direction of the first direction, which can come and go, to be slidably arranged on the substrate.
The reversing transmission mechanism is to be hinged L-type reversing piece on the substrate, one end of the reversing piece with it is described
Linkage board is hinged, and the other end is hinged with the front door lock bolt.
The integrated structure includes being arranged in the earthed switch operating shaft and with the earthed switch operating shaft
The axle sleeve of rotation, and the protuberance being molded on the linkage board, the earthed switch operating shaft towards locking direction rotate when,
The axle sleeve drives the linkage board to be moved towards locked position of coupler direction by propping up the protuberance.
It is described to reset the extension spring that voltage biasing structure includes being arranged between the linkage board and the substrate.
It is additionally provided between the linkage board and the substrate and the guiding knot being oriented to is reciprocated to the linkage board
Structure.
The blocking mechanism includes
Withstanding structure, is connected to the back door lock by attachment structure and latches；
On projective structure, the relevant position for being arranged on the linkage board, and when the linkage board is moved to locked position of coupler,
The knot that withstands props up the projective structure, makes the back door lock bolt not deviate to unlock.
The attachment structure includes
Baffle plate, which is provided with the withstanding structure；
Connecting rod, its one end is connected by reversing piece with the back door lock bolt, and the other end is connected with the baffle plate, the commutation
Part makes motion of the back door lock bolt along the first direction be converted to the motion for driving the connecting rod along the second direction.
The reversing piece is the V-type part that angle is more than 90 degree.
The projective structure is L-type bent plate, and the withstanding structure is the push rod for propping up the L-type bent plate side.
Technical solution of the present invention, has the following advantages that：
1. earthed switch and the interlock of front/rear door that the present invention is provided, including：Earthed switch operating shaft, connection ground connection
Switch, is changed by rotating between power-on servicing and power operation；Front door lock bolt, for being locked to front door；Back door lock
Door bolt, for being locked to back door；Link gear, is connected with the front door lock bolt, and the earthed switch operating shaft it is positive,
Under counter-rotational control, the front door lock bolt is driven to unlock or locking；Blocking mechanism, be arranged on the back door lock bolt with it is described
Between link gear, and stopped when the link gear is moved to locked position of coupler by the link gear, limit the back door
Locking mechanism is moved towards unlocking direction；When the link gear moves to the locked position of coupler, the front door lock bolt is to before described
Door is locked, while the blocking mechanism is stopped by the link gear, the back door locking mechanism is restricted from movement,
It can prevent back door from being opened by mistake to occur Danger Electric shock risk, it is ensured that the safety operation to switch cubicle, the device can be simultaneously to switch cubicle
Front door and back door interlocked, it is simple and reliable for structure.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
The earthed switch and the interlock of front/rear door that Fig. 1 is provided in the first embodiment for the present invention, which are in, to close a floodgate
The structural representation of state；
Fig. 2 is in the structural representation of gate-dividing state for the earthed switch and the interlock of front/rear door shown in Fig. 1.
Description of reference numerals：
1- earthed switch operating shafts；2- axle sleeves；3- linkage boards；
4-L type reversing pieces；5- breaker chamber door latches；6- cable chamber door lock bolts；
7- extension springs；8- connecting rods；9- baffle plates；
10- push rods；11- back doors lock bolt；12- reversing pieces；
13- bent plates.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can just be combined with each other into conflict.
Embodiment 1
A kind of earthed switch as shown in Figure 1-2 and a kind of embodiment of the interlock of front/rear door, including：Connect
Ground switching manipulation axle 1, connects earthed switch, is changed by rotating between power-on servicing and power operation；Front door lock bolt, including
Breaker chamber door latch 5 and cable chamber door lock bolt 6, are locked to circuit breaker chamber door and cable chamber door respectively；Back door lock bolt 11,
For being locked to back door；It is provided with what is rotated with the earthed switch operating shaft 1 in the earthed switch operating shaft 1
Axle sleeve 2, and the protuberance being molded on the linkage board, the earthed switch operating shaft 1 towards locking direction rotate when, it is described
Axle sleeve 2 drives the linkage board 3 to be moved towards locked position of coupler direction by propping up the protuberance, in the linkage board 3 and base
It is additionally provided between plate and the guide frame being oriented to is reciprocated to the linkage board 3, it is as illustrated in fig. 1 and 2, described to be oriented to knot
Structure includes being molded over three consistent bar holes of length bearing of trend on the linkage board 3, and is fixedly mounted on the base
In three leads on plate, and the corresponding lead insertion bar hole.The linkage board 3 in the first direction can may be used
Come and go and be slidably arranged on substrate, the first direction is vertical direction；It is provided between the linkage board 3 and the substrate
Voltage biasing structure is resetted, the reset voltage biasing structure is extension spring 7, and its partial pressure drives the linkage on the linkage board 3
Plate 3 is moved towards locked position of coupler direction；Between the linkage board 3 and the front door lock bolt, reversing transmission mechanism is provided with, by institute
The driving for stating linkage board 3 is converted to the driving for driving the front door lock bolt moving direction, in the present embodiment, and the commutation is passed
Motivation structure is to be hinged L-type reversing piece 4 on the substrate, and one end of the L-type reversing piece 4 is hinged with the linkage board 3, separately
One end is hinged with the breaker chamber door latch 5 and cable chamber door lock bolt 6 respectively；The front door lock bolt is along perpendicular to described first
The second direction in direction, which can come and go, to be slidably arranged on the substrate；The back door lock bolt 11 is that angle is more than 90 by profile
The reversing piece 12 of the V-type part of degree connects one end of connecting rod 8, the other end connection baffle plate 9 of the connecting rod 8, on the baffle plate 9
Provided with withstanding structure, projective structure is provided with the relevant position of the linkage board 3, the projective structure is described to be molded over
L-type bent plate 13 on dynamic plate, the withstanding structure is the push rod 10 for propping up the side of L-type bent plate 13.
In the above-described embodiment, axle sleeve 2 and the protuberance formation integrated structure, in earthed switch behaviour
Make axle 1 towards unlocking direction rotate when, overcome it is described reset voltage biasing structure biasing force, by the earthed switch operating shaft 1 turn
Power is converted to the power for driving the linkage board 3 to be moved towards lockset position of coupler direction；The linkage board 3, reversing transmission mechanism, reset
Voltage biasing structure, integrated structure collectively constitute link gear, the earthed switch operating shaft is positive, under counter-rotational control,
The front door lock bolt is driven to unlock or locking；The withstanding structure, projective structure composition barrier structure, in the gear
Structure is stopped when being moved to locked position of coupler by the link gear, is limited the back door locking mechanism and is moved towards unlocking direction.
In the above-described embodiment, when the link gear moves to the locked position of coupler, the front door lock bolt is to described
Front door is locked, while the blocking mechanism is stopped by the link gear, the back door locking mechanism is restricted from moving
It is dynamic, it can prevent back door from being opened by mistake to occur Danger Electric shock risk, it is ensured that the safety operation to switch cubicle, the device can be simultaneously to switch
The front door and back door of cabinet are interlocked, simple and reliable for structure.
In use, when earthed switch is in "on" position, be not in contact between the push rod 10 and the linkage board 3,
Now gate lock of front gate and rear door lock are not all locked, and can be opened；It is described when earthed switch carries out sub-switching operation
Earthed switch operating shaft 1 is rotated counterclockwise, while driving the axle sleeve 2 to rotate, the linkage board 3 is past by the pulling force of extension spring 7
Upper motion, the breaker chamber door latch 5 and cable chamber door lock bolt 6 are respectively locked road device room door and cable chamber door, together
When, the L-type bent plate 13 on the linkage board 3 props up the push rod 10, and the connecting rod 8 is restricted from motion of turning right, it is described after
Door latch 11 is constantly in lock-out state by limitation, and back door can not be opened, and can prevent Danger Electric shock risk.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (11)
1. the interlock of a kind of earthed switch and front/rear door, it is characterised in that including：
Earthed switch operating shaft, connects earthed switch, is changed by rotating between power-on servicing and power operation；
Front door lock bolt, for being locked to front door；
Back door lock bolt, for being locked to back door；
Link gear, is connected with the front door lock bolt, and the earthed switch operating shaft is positive, under counter-rotational control,
The front door lock bolt is driven to unlock or locking；
Blocking mechanism, is arranged between the back door lock bolt and the link gear, and be moved to locking in the link gear
Stopped during position by the link gear, limit the back door locking mechanism and moved towards unlocking direction.
2. the interlock of a kind of earthed switch according to claim 1 and front/rear door, it is characterised in that the gear
Structure includes
Linkage board, is connected with the front door lock bolt, can come and go and be slidably arranged on substrate；
Reversing transmission mechanism, is arranged between the linkage board and the front door lock bolt, the driving of the linkage board is converted to
Drive the driving of the front door lock bolt moving direction；
Voltage biasing structure is resetted, its partial pressure drives the linkage board to be moved towards locked position of coupler direction on the linkage board；
Integrated structure, is arranged between the earthed switch operating shaft and the linkage board, and in the earthed switch operating shaft
When being rotated towards unlocking direction, overcome the biasing force of the reset voltage biasing structure, the rotatory force of the earthed switch operating shaft is turned
It is changed to the power for driving the linkage board to be moved towards lockset position of coupler direction.
3. the interlock of a kind of earthed switch according to claim 2 and front/rear door, it is characterised in that the linkage board
It can come and go and be slidably arranged on the substrate in the first direction, the front door lock bolt is along perpendicular to the second of the first direction
Direction, which can come and go, to be slidably arranged on the substrate.
4. the interlock of a kind of earthed switch according to claim 3 and front/rear door, it is characterised in that the commutation is passed
Motivation structure is to be hinged L-type reversing piece on the substrate, and one end of the reversing piece is hinged with the linkage board, the other end with
The front door lock bolt is hinged.
5. the interlock of a kind of earthed switch according to claim 2 and front/rear door, it is characterised in that the combination knot
Structure includes the axle sleeve for being arranged in the earthed switch operating shaft and being rotated with the earthed switch operating shaft, and shaping
Protuberance on the linkage board, the earthed switch operating shaft towards locking direction rotate when, the axle sleeve is by propping up
Protuberance is stated to drive the linkage board to move towards locked position of coupler direction.
6. the interlock of a kind of earthed switch according to claim 2 and front/rear door, it is characterised in that the reset is inclined
Laminated structure includes the extension spring being arranged between the linkage board and the substrate.
7. the interlock of a kind of earthed switch according to claim 2 and front/rear door, it is characterised in that the linkage board
It is additionally provided between the substrate and the guide frame being oriented to is reciprocated to the linkage board.
8. a kind of interlock of the earthed switch and front/rear door according to claim 3 or 4, it is characterised in that the resistance
Retaining device includes
Withstanding structure, is connected to the back door lock by attachment structure and latches；
It is described on projective structure, the relevant position for being arranged on the linkage board, and when the linkage board is moved to locked position of coupler
Withstand knot and prop up the projective structure, make the back door lock bolt not deviate to unlock.
9. the interlock of a kind of earthed switch according to claim 8 and front/rear door, it is characterised in that the connection knot
Structure includes
Baffle plate, which is provided with the withstanding structure；
Connecting rod, its one end is connected by reversing piece with the back door lock bolt, and the other end is connected with the baffle plate, and the reversing piece makes
Motion of the back door lock bolt along the first direction is converted to the motion for driving the connecting rod along the second direction.
10. the interlock of a kind of earthed switch according to claim 9 and front/rear door, it is characterised in that the commutation
Part is the V-type part that angle is more than 90 degree.
11. the interlock of a kind of earthed switch according to claim 8 and front/rear door, it is characterised in that the protrusion
Structure is L-type bent plate, and the withstanding structure is the push rod for propping up the L-type bent plate side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710676807.0A CN107293427B (en) | 2017-08-09 | 2017-08-09 | Interlocking device of grounding switch and front door and rear door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710676807.0A CN107293427B (en) | 2017-08-09 | 2017-08-09 | Interlocking device of grounding switch and front door and rear door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107293427A true CN107293427A (en) | 2017-10-24 |
| CN107293427B CN107293427B (en) | 2020-02-14 |
Family
ID=60105705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710676807.0A Active CN107293427B (en) | 2017-08-09 | 2017-08-09 | Interlocking device of grounding switch and front door and rear door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107293427B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564748A (en) * | 2017-10-31 | 2018-01-09 | 现代重工(中国)电气有限公司 | A kind of middle-placed switch cabinet door-plate interlock with ground protection |
| CN108847605A (en) * | 2018-09-06 | 2018-11-20 | 华仪电气股份有限公司 | A kind of five-prevention interlocking device and the hands injured with it |
| CN109559919A (en) * | 2018-12-17 | 2019-04-02 | 江苏大烨智能电气股份有限公司 | A kind of high-tension switch gear mechanism interlock |
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| CN202443883U (en) * | 2011-12-31 | 2012-09-19 | 山东金人电气有限公司 | High voltage capacitor cabinet interlocking protection device |
| WO2013097175A1 (en) * | 2011-12-30 | 2013-07-04 | Abb Technology Ltd. | Mechanical interlock device among cable door, rear door and earthing switch |
| CN204720802U (en) * | 2015-05-11 | 2015-10-21 | 维龙（镇江）电工研究院有限公司 | Switch cubicle front/rear door mechanical interlocks |
| CN205428759U (en) * | 2016-04-06 | 2016-08-03 | 万控集团有限公司 | Door interlock behind cubical switchboard |
| CN206194632U (en) * | 2016-08-31 | 2017-05-24 | 华仪电气股份有限公司 | Interlock of earthing switch AND gate of cubical switchboard |
| CN207009315U (en) * | 2017-08-09 | 2018-02-13 | 华仪电气股份有限公司 | A kind of interlock of earthed switch and front/rear door |
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2017
- 2017-08-09 CN CN201710676807.0A patent/CN107293427B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097175A1 (en) * | 2011-12-30 | 2013-07-04 | Abb Technology Ltd. | Mechanical interlock device among cable door, rear door and earthing switch |
| CN202443883U (en) * | 2011-12-31 | 2012-09-19 | 山东金人电气有限公司 | High voltage capacitor cabinet interlocking protection device |
| CN204720802U (en) * | 2015-05-11 | 2015-10-21 | 维龙（镇江）电工研究院有限公司 | Switch cubicle front/rear door mechanical interlocks |
| CN205428759U (en) * | 2016-04-06 | 2016-08-03 | 万控集团有限公司 | Door interlock behind cubical switchboard |
| CN206194632U (en) * | 2016-08-31 | 2017-05-24 | 华仪电气股份有限公司 | Interlock of earthing switch AND gate of cubical switchboard |
| CN207009315U (en) * | 2017-08-09 | 2018-02-13 | 华仪电气股份有限公司 | A kind of interlock of earthed switch and front/rear door |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564748A (en) * | 2017-10-31 | 2018-01-09 | 现代重工(中国)电气有限公司 | A kind of middle-placed switch cabinet door-plate interlock with ground protection |
| CN107564748B (en) * | 2017-10-31 | 2020-01-17 | 现代重工(中国)电气有限公司 | In put cabinet door plant interlock with ground protection |
| CN108847605A (en) * | 2018-09-06 | 2018-11-20 | 华仪电气股份有限公司 | A kind of five-prevention interlocking device and the hands injured with it |
| CN108847605B (en) * | 2018-09-06 | 2024-05-31 | 华仪电气股份有限公司 | Five-prevention interlocking device and handcart cabinet with same |
| CN109559919A (en) * | 2018-12-17 | 2019-04-02 | 江苏大烨智能电气股份有限公司 | A kind of high-tension switch gear mechanism interlock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107293427B (en) | 2020-02-14 |
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