CN108538673A - A kind of earthing switch closes point instruction and a blocking device - Google Patents
A kind of earthing switch closes point instruction and a blocking device Download PDFInfo
- Publication number
- CN108538673A CN108538673A CN201810549555.XA CN201810549555A CN108538673A CN 108538673 A CN108538673 A CN 108538673A CN 201810549555 A CN201810549555 A CN 201810549555A CN 108538673 A CN108538673 A CN 108538673A
- Authority
- CN
- China
- Prior art keywords
- switch
- locking
- interlocking bar
- separating brake
- combined floodgate
- 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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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- 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
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a kind of earthing switches to close point instruction and a blocking device, including mounting plate, rotating shaft mechanism, close/open machine and blocking mechanism;Rotating shaft mechanism includes operation axis, and operation axis is equipped with on/off switch cam and latching cam;On/off switch mechanism includes on/off switch interlocking bar, combined floodgate moving contact, separating brake moving contact, combined floodgate static contact, separating brake static contact;On/off switch resetting-mechanism is arranged in the bottom of on/off switch interlocking bar;Blocking mechanism includes locking interlocking bar, latching member;Latching member includes locking fixed plate, obturator hernia, and the folded end for being latched interlocking bar is inserted into forming locking in obturator hernia;It is latched interlocking bar and is equipped with blocked reset pressing plate, blocked reset spring is cased in the locking interlocking bar between blocked reset pressing plate and locking guide plate.On/off switch together with locking simultaneous, ensure that, in separating brake, locking is effective by the present invention, and electrification maloperation is avoided to be latched under the rotation of operation axis and also release together when closing a floodgate, reliable and secure.
Description
Technical field
The invention belongs to technical field of electric equipment, and in particular to a kind of earthing switch closes point instruction and a blocking device.
Background technology
Over the years, the statistics of a large amount of electrical hazards shows personal electric shock injures and deaths and electrical equipment accident, often with electrician
The technical operation standard for making personnel has direct relation, electrician that must strictly be grasped by electrical safety working regulation
Make.Switchgear is a kind of important electrical equipment, wherein when being powered off because of repair, needs first separating brake breaker, then divide to fall isolation
Switch, earthing switch combined floodgate rear cabinet door can be opened, and here it is the operating instructions having to comply with, and otherwise will result in electrification and accidentally grasp
Make, there are security risks.But in actual mechanical process, often exists and open cabinet in the case where earthing switch does not close a floodgate
Door, to cause the livewire work of operating personnel, danger coefficient high.
Therefore, how by the switch closing and switch opening of earthing switch together with blocking device simultaneous, when making grounding switch tripping
Locking is effective, to avoid electrification maloperation, and the lock release when earthing switch closes a floodgate, to carry out next step behaviour
Make, is highly important.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of earthing switch to close point instruction and locking
Device.
To achieve the above object, the present invention adopts the following technical scheme that:A kind of earthing switch closes point instruction and a blocking device,
Including mounting plate, rotating shaft mechanism, close/open machine and blocking mechanism;
The cabinet door of the mounting plate and switchgear is fixedly connected;
The rotating shaft mechanism includes operation axis, and the connecting lever of the operation axis and switchgear is rotatablely connected;It is described
Operation axis is equipped with on/off switch cam and latching cam;
The on/off switch mechanism includes on/off switch interlocking bar, combined floodgate moving contact, separating brake moving contact, combined floodgate static contact, separating brake
Static contact;The separating brake moving contact and combined floodgate moving contact are arranged in on/off switch interlocking bar, and the separating brake static contact and combined floodgate are quiet
Contact is arranged on a mounting board;The separating brake moving contact and separating brake static contact form separating brake normally closed switch, the combined floodgate moving contact
Combined floodgate normal open switch is formed with combined floodgate static contact;On/off switch resetting-mechanism, the conjunction is arranged in the bottom of the on/off switch interlocking bar
Separating brake resetting-mechanism is fixedly connected with mounting plate;The top of the on/off switch interlocking bar is connected with on/off switch cam;
The blocking mechanism includes locking interlocking bar, latching member;The latching member includes locking fixed plate, and the locking is solid
Fixed board is equipped with obturator hernia, and the locking fixed plate is fixedly connected with mounting plate;The top of the locking interlocking bar and locking are convex
Wheel is connected, and the bottom of the locking interlocking bar is folded upward at, and the folded end of the locking interlocking bar is inserted into
Locking is formed in obturator hernia;The mounting plate is equipped with locking guide plate, and the locking guide plate is equipped with locking pilot hole, institute
It states locking interlocking bar and passes through locking pilot hole;The locking interlocking bar is equipped with blocked reset pressing plate, the blocked reset pressing plate
Positioned at locking guide plate top, blocked reset is cased in the locking interlocking bar between the blocked reset pressing plate and locking guide plate
The both ends of spring, the blocked reset spring are fixedly connected with blocked reset pressing plate with locking guide plate respectively.
Preferably, the on/off switch cam and latching cam are disc cam.
Preferably, the on/off switch mechanism further includes power supply, combined floodgate indicator light, separating brake indicator light;The power supply closes a floodgate often
Switch, combined floodgate indicator light connect to form closing circuit, and the power supply, separating brake normally closed switch, separating brake indicator light, which are connected, to be formed point
Lock circuit, the closing circuit and sub-gate circuit are in parallel.
Preferably, the on/off switch resetting-mechanism includes on/off switch resetting spring and on/off switch reset fixing board, the conjunction
The top of separating brake resetting spring is fixedly connected with the bottom end of on/off switch interlocking bar, bottom end and the conjunction point of the on/off switch resetting spring
Lock reset fixing board is fixedly connected, and the on/off switch reset fixing board is fixedly connected with mounting plate.
Preferably, the mounting plate is equipped with on/off switch guide plate, and the on/off switch guide plate is oriented to equipped with on/off switch
Hole, the on/off switch interlocking bar pass through on/off switch pilot hole.
Preferably, on/off switch pressing plate, the on/off switch pressing plate and on/off switch is fixedly installed in on/off switch interlocking bar top
Cam contact connects.
Preferably, the locking interlocking bar top fixed setting locking pressing plate, the locking pressing plate are contacted with latching cam
Connection.
Preferably, the on/off switch mechanism is equipped with several sets and is arranged in parallel altogether.
Preferably, the on/off switch cam is equal in magnitude with latching cam and left and right is aligned.
Earthing switch provided by the invention closes point instruction and blocking device, principle are as follows:
1. separating brake and locking simultaneous:
When separating brake, operation axis rotation makes on/off switch cam be contacted with on/off switch pressing plate away from the close one end in axle center, to make
On/off switch interlocking bar is located at topmost, and the separating brake moving contact of on/off switch interlocking bar is contacted with separating brake static contact, at this time power supply, separating brake
Normally closed switch, separating brake indicator lamp groups at sub-gate circuit connect, separating brake indicator light is bright, prompt earthing switch in gate-dividing state;Together
When locking interlocking bar also be located at topmost, to make the bending end of locking interlocking bar be caught in obturator hernia realize locking, to protect
It is effective to have demonstrate,proved earthing switch and be latched in separating brake.
2. combined floodgate and unlocking
When combined floodgate, operation axis rotation makes on/off switch cam be contacted with on/off switch pressing plate away from the remote one end in axle center, to make
On/off switch interlocking bar move down (in the process, on/off switch interlocking bar move down compression on/off switch resetting spring, when earthing switch by
When combined floodgate becomes separating brake, the on/off switch resetting spring of compression promotes on/off switch interlocking bar to reset upwards), make on/off switch interlocking bar
Combined floodgate moving contact is contacted with combined floodgate static contact, at this time power supply, combined floodgate normal open switch, combined floodgate indicator lamp groups at closing circuit due to
The closure of normal open switch and connect, combined floodgate indicator light is bright, prompt earthing switch in "on" position;Simultaneously interlocking bar is latched also to move down
(in the process, be latched interlocking bar moves down compression blocked reset spring, when earthing switch becomes separating brake from closing a floodgate, compression
Blocked reset spring promote to be latched interlocking bar reset upwards), to make the bending end of locking interlocking bar downwards out of obturator hernia
Abjection, to ensure that earthing switch locking when closing a floodgate is to release.
The beneficial effects of the invention are as follows:
The switch closing and switch opening of earthing switch passes through on/off switch cam, the on/off switch resetting spring on operation axis in the present invention
It realizes, whole operation is easy, switching is simple and practical;On/off switch ensure that together with locking simultaneous in separating brake simultaneously,
Locking is effective, and electrification maloperation is avoided to be latched under the rotation of operation axis and also release together when closing a floodgate, reliable to pacify
Entirely.
Description of the drawings
Fig. 1 is that earthing switch of the present invention closes point structural representation stereogram of instruction and blocking device in separating brake;
Fig. 2 is that earthing switch of the present invention closes point structural representation front view of instruction and blocking device in separating brake;
Fig. 3 is that earthing switch of the present invention closes point structural representation stereogram of instruction and blocking device when closing a floodgate;
Fig. 4 is that earthing switch of the present invention closes point structural representation front view of instruction and blocking device when closing a floodgate;
Fig. 5 is the structural representation stereogram of mounting plate of the present invention;
Fig. 6 is the structural representation front view of mounting plate of the present invention;
Fig. 7 is the structural representation vertical view of mounting plate of the present invention;
Fig. 8 is the structural schematic diagram of on/off switch interlocking bar of the present invention;
Fig. 9 is the structural schematic diagram of present invention locking interlocking bar;
1- mounting plates, 2- operation axis, 3- on/off switch cams, 4- latching cams, 5- on/off switch interlocking bar, 6- close a floodgate dynamic tactile
Head, 7- separating brake moving contacts, 8- combined floodgate static contacts, 9- separating brake static contacts, 10- on/off switch resetting springs, 11- on/off switch replacement and fixations
Plate, 12- on/off switch guide plates, 13- on/off switch pilot holes, 14- on/off switch pressing plates, 15- are latched interlocking bar, and 16- is latched fixed plate,
17- obturator hernias, 18- are latched guide plate, and 19- is latched pilot hole, 20- blocked reset pressing plates, 21- blocked reset springs, 22- lockings
Pressing plate.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figs 1-4, a kind of earthing switch closes point instruction and a blocking device, including mounting plate 1, rotating shaft mechanism, division
Brake mechanism and blocking mechanism;
The mounting plate 1 and the cabinet door of switchgear are fixedly connected;
The rotating shaft mechanism includes operation axis 2, and the operation axis 2 and the connecting lever of switchgear are rotatablely connected;Institute
It states operation axis 2 and is equipped with on/off switch cam 3 and latching cam 4;
The on/off switch mechanism include on/off switch interlocking bar 5, separating brake moving contact 6, combined floodgate moving contact 7, separating brake static contact 8,
Combined floodgate static contact 9;The separating brake moving contact 6 and combined floodgate moving contact 7 are arranged in on/off switch interlocking bar 5, as shown in figure 8, wherein
Separating brake moving contact 6 is located at the top of combined floodgate moving contact 7, and the separating brake static contact 8 and combined floodgate static contact 9 are arranged on mounting plate 1,
As illustrated in figs. 5-7, wherein separating brake static contact 8 is located at the top of combined floodgate static contact 9;The separating brake moving contact 6 and separating brake static contact 8
Separating brake normally closed switch is formed, i.e., separating brake moving contact 6 and the contact composition closure switch of separating brake static contact 8 when just starting;The combined floodgate
Moving contact 7 and combined floodgate static contact 9 form combined floodgate normal open switch;The bottom setting of the on/off switch interlocking bar 5 joins convenient for on/off switch
The on/off switch resetting-mechanism that lever 5 resets upwards, the on/off switch resetting-mechanism are fixedly connected with mounting plate 1;The on/off switch
The top of interlocking bar 5 is connected with convex 3 wheel of on/off switch, i.e. the rotation of operation axis 2 drives on/off switch cam 3 to rotate, and
The contact connectio of on/off switch cam 3 and on/off switch interlocking bar 5 is converted to on/off switch interlocking bar 5 by on/off switch cam 3
It moves up and down;
The blocking mechanism includes locking interlocking bar 15, latching member;As illustrated in figs. 5-7, the latching member includes that locking is solid
Fixed board 16, the locking fixed plate 16 are equipped with obturator hernia 17, and the locking fixed plate 16 is fixedly connected with mounting plate 1;It is described
The top of locking interlocking bar 15 is connected with latching cam 4, i.e. the rotation of operation axis 2 drives latching cam 4 to rotate, and
Latching cam 4 and the up and down fortune that is converted to locking interlocking bar 15 of the contact connectio by latching cam 4 for being latched interlocking bar 15
It is dynamic;As shown in figure 9, the bottom of the locking interlocking bar 15 is folded upward at, the folded end of the locking interlocking bar 15 can insert
Enter and forms locking in obturator hernia 17;The mounting plate 1 is equipped with locking guide plate 18, and the locking guide plate 18 is equipped with locking
Pilot hole 19, the locking interlocking bar 15 pass through locking pilot hole 19, locking pilot hole 19 to play limit to locking interlocking bar 15
The effect of guiding;The locking interlocking bar 15 is equipped with blocked reset pressing plate 20, and the blocked reset pressing plate 20, which is located at locking, leads
To 18 top of plate, blocked reset bullet is cased in the locking interlocking bar 15 between the blocked reset pressing plate 20 and locking guide plate 18
The both ends of spring 21, the blocked reset spring 21 are fixedly connected with blocked reset pressing plate 20 with locking guide plate 18 respectively.
Preferably, the on/off switch cam 3 and latching cam 4 are disc cam.
Preferably, the on/off switch mechanism further includes power supply, combined floodgate indicator light, separating brake indicator light;The power supply closes a floodgate often
Switch, combined floodgate indicator light connect to form closing circuit, and the power supply, separating brake normally closed switch, separating brake indicator light, which are connected, to be formed point
Lock circuit, the closing circuit and sub-gate circuit are in parallel;Combined floodgate indicator light is bright when combined floodgate, separating brake indicator light goes out, separating brake when separating brake
Indicator light is bright, combined floodgate indicator light goes out, to play suggesting effect to "on" position and gate-dividing state respectively.
Preferably, as shown in Figs 1-4, the on/off switch resetting-mechanism includes that on/off switch resetting spring 10 and on/off switch reset
The top of fixed plate 11, the on/off switch resetting spring 10 is fixedly connected with the bottom end of on/off switch interlocking bar 5, and the on/off switch is multiple
The bottom end of position spring 10 is fixedly connected with on/off switch reset fixing board 11, and the on/off switch reset fixing board 11 is solid with mounting plate 1
Fixed connection;When becoming closing a floodgate from separating brake, on/off switch resetting spring 10 receives compression, when becoming separating brake from combined floodgate, the conjunction of compression
Separating brake resetting spring 10 makes on/off switch interlocking bar 5 reset upwards.
Preferably, the mounting plate 1 is equipped with on/off switch guide plate 12, and the on/off switch guide plate 12 is equipped with on/off switch
Pilot hole 13, the on/off switch interlocking bar 5 pass through on/off switch pilot hole 13, on/off switch pilot hole 13 to play on/off switch interlocking bar 5
To the effect of limition orientation.
Preferably, 5 top of the on/off switch interlocking bar fixed setting on/off switch pressing plate 14, the on/off switch pressing plate 14 and conjunction
Separating brake cam 3 connects.
Preferably, 15 top of the locking interlocking bar fixed setting locking pressing plate 22, the locking pressing plate 22 and locking are convex
Wheel 4 connects.
Preferably, the on/off switch mechanism is equipped with several sets and is arranged in parallel altogether, in order to meet the quantity need of leading-out terminal
It asks.
Preferably, the on/off switch cam 3 is equal in magnitude with latching cam 4 and left and right is aligned.
A kind of earthing switch closes point instruction and blocking device, specific implementation mode are:
1. separating brake and locking simultaneous:
As shown in Figs. 1-2, when separating brake, operation axis 2 rotates, and makes on/off switch cam 3 away from the close one end in axle center and on/off switch
Pressing plate 14 contacts, to make on/off switch interlocking bar 5 be located at topmost, separating brake moving contact 6 and the separating brake stationary contact of on/off switch interlocking bar 5
It is first 8 contact, at this time power supply, separating brake normally closed switch, separating brake indicator lamp groups at sub-gate circuit connect, separating brake indicator light is bright, prompt
Earthing switch is in gate-dividing state;Interlocking bar 15 is latched simultaneously also to be located at topmost, to make the bending end card of locking interlocking bar 15
Enter and realize locking in obturator hernia 17, is effective to ensure that earthing switch is latched in separating brake.
2. combined floodgate and unlocking
As shown in Figure 3-4, when combined floodgate, operation axis 2 rotates, and makes on/off switch cam 3 away from the remote one end in axle center and on/off switch
Pressing plate 14 contacts, and to make on/off switch interlocking bar 5 move down, (in the process, the compression on/off switch that moves down of on/off switch interlocking bar 5 is answered
Position spring 10, when earthing switch becomes separating brake from closing a floodgate, the on/off switch resetting spring 10 of compression promote on/off switch interlocking bar 5 to
Upper reset), so that the combined floodgate moving contact 7 of on/off switch interlocking bar 5 is contacted with combined floodgate static contact 9, at this time power supply, combined floodgate normal open switch,
Combined floodgate indicator lamp groups at closing circuit connected due to the closure of combined floodgate normal open switch, combined floodgate indicator light is bright, prompt ground connection open
It closes in "on" position;It it is latched interlocking bar 15 simultaneously also moves down and (in the process, be latched interlocking bar 15 and move down compression blocked reset
Spring 21, when earthing switch becomes separating brake from closing a floodgate, the blocked reset spring 21 of compression promotes to be latched interlocking bar 15 upwards again
Position), to make the bending end abjection out of obturator hernia 17 downwards of locking interlocking bar 15, to ensure that earthing switch when closing a floodgate
Locking is to release.
The switch closing and switch opening of earthing switch resets bullet by on/off switch cam 3, the on/off switch on operation axis 2 in the present invention
Spring 10 realizes that whole operation is easy, switching is simple and practical;Simultaneously by on/off switch together with locking simultaneous, it ensure that and dividing
When lock, locking is effective, and electrification maloperation is avoided to be latched under the rotation of operation axis and also release together when closing a floodgate, can
By safety.
In the description of the present invention, it is to be understood that, the instructions such as term "left", "right", "front", "rear", "upper", "lower"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to the limit of the present invention
System, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art need not pay
Go out various modifications or changes that creative work can be made still within protection scope of the present invention.
Claims (9)
1. a kind of earthing switch closes point instruction and a blocking device, characterized in that including mounting plate, rotating shaft mechanism, close/open machine
And blocking mechanism;
The cabinet door of the mounting plate and switchgear is fixedly connected;
The rotating shaft mechanism includes operation axis, and the connecting lever of the operation axis and switchgear is rotatablely connected;The operation
Main shaft is equipped with on/off switch cam and latching cam;
The on/off switch mechanism includes on/off switch interlocking bar, combined floodgate moving contact, separating brake moving contact, combined floodgate static contact, separating brake stationary contact
Head;The separating brake moving contact and combined floodgate moving contact are arranged in on/off switch interlocking bar, the separating brake static contact and combined floodgate static contact
Setting is on a mounting board;The separating brake moving contact and separating brake static contact form separating brake normally closed switch, the combined floodgate moving contact and conjunction
Lock static contact forms combined floodgate normal open switch;On/off switch resetting-mechanism, the on/off switch is arranged in the bottom of the on/off switch interlocking bar
Resetting-mechanism is fixedly connected with mounting plate;The top of the on/off switch interlocking bar is connected with on/off switch cam;
The blocking mechanism includes locking interlocking bar, latching member;The latching member includes locking fixed plate, the locking fixed plate
It is equipped with obturator hernia, the locking fixed plate is fixedly connected with mounting plate;Top and the latching cam of the locking interlocking bar into
Row connects, and the bottom of the locking interlocking bar is folded upward at, and the folded end of the locking interlocking bar is inserted into being latched
Locking is formed in hole;The mounting plate is equipped with locking guide plate, and the locking guide plate is equipped with locking pilot hole, described to close
It locks interlocking bar and passes through locking pilot hole;The locking interlocking bar is equipped with blocked reset pressing plate, and the blocked reset pressing plate is located at
It is latched guide plate top, blocked reset bullet is cased in the locking interlocking bar between the blocked reset pressing plate and locking guide plate
The both ends of spring, the blocked reset spring are fixedly connected with blocked reset pressing plate with locking guide plate respectively.
2. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the on/off switch cam
It is disc cam with latching cam.
3. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the on/off switch mechanism
Further include power supply, combined floodgate indicator light, separating brake indicator light;The power supply, combined floodgate normal open switch, combined floodgate indicator light connect to form combined floodgate
Circuit, the power supply, separating brake normally closed switch, separating brake indicator light connect to form sub-gate circuit, the closing circuit and sub-gate circuit
It is in parallel.
4. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the on/off switch resets
Mechanism includes on/off switch resetting spring and on/off switch reset fixing board, and top and the on/off switch of the on/off switch resetting spring link
The bottom end of bar is fixedly connected, and the bottom end of the on/off switch resetting spring is fixedly connected with on/off switch reset fixing board, and described close is divided
Lock reset fixing board is fixedly connected with mounting plate.
5. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that set on the mounting plate
There are on/off switch guide plate, the on/off switch guide plate to be equipped with on/off switch pilot hole, the on/off switch interlocking bar passes through on/off switch
Pilot hole.
6. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the on/off switch linkage
On/off switch pressing plate is fixedly installed in bar top, and the on/off switch pressing plate is connect with on/off switch cam contact.
7. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the locking interlocking bar
Top fixed setting locking pressing plate, the locking pressing plate are connected with latching cam.
8. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the on/off switch mechanism
It is equipped with several sets altogether and is arranged in parallel.
9. a kind of earthing switch as described in claim 1 closes point instruction and a blocking device, characterized in that the on/off switch cam
And left and right equal in magnitude with latching cam is aligned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810549555.XA CN108538673B (en) | 2018-05-31 | 2018-05-31 | Earthing switch closes and divides instruction and blocking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810549555.XA CN108538673B (en) | 2018-05-31 | 2018-05-31 | Earthing switch closes and divides instruction and blocking device |
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CN108538673A true CN108538673A (en) | 2018-09-14 |
CN108538673B CN108538673B (en) | 2019-12-17 |
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CN201810549555.XA Active CN108538673B (en) | 2018-05-31 | 2018-05-31 | Earthing switch closes and divides instruction and blocking device |
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CN110426540A (en) * | 2019-08-09 | 2019-11-08 | 安徽一天电气技术股份有限公司 | The mechanical lock of split-phase step switch |
CN110993396A (en) * | 2019-09-30 | 2020-04-10 | 伊顿电力设备有限公司 | Auxiliary switch device for grounding switch and grounding switch comprising same |
CN111854581A (en) * | 2020-07-29 | 2020-10-30 | 刘玲玲 | Bridge deck road flatness detection system for bridge engineering construction and detection method thereof |
CN114664590A (en) * | 2020-12-23 | 2022-06-24 | 上海良信电器股份有限公司 | Safety mechanism and isolating switch |
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CN110993396A (en) * | 2019-09-30 | 2020-04-10 | 伊顿电力设备有限公司 | Auxiliary switch device for grounding switch and grounding switch comprising same |
CN110993396B (en) * | 2019-09-30 | 2022-06-14 | 伊顿电力设备有限公司 | Auxiliary switch device for grounding switch and grounding switch comprising same |
CN111854581A (en) * | 2020-07-29 | 2020-10-30 | 刘玲玲 | Bridge deck road flatness detection system for bridge engineering construction and detection method thereof |
CN111854581B (en) * | 2020-07-29 | 2021-11-09 | 国联(广东)检测集团有限公司 | Bridge deck road flatness detection system for bridge engineering construction and detection method thereof |
CN114664590A (en) * | 2020-12-23 | 2022-06-24 | 上海良信电器股份有限公司 | Safety mechanism and isolating switch |
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