CN104252980B - Disconnecting switch fuse group and safety interlock thereof - Google Patents
Disconnecting switch fuse group and safety interlock thereof Download PDFInfo
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- CN104252980B CN104252980B CN201310263214.3A CN201310263214A CN104252980B CN 104252980 B CN104252980 B CN 104252980B CN 201310263214 A CN201310263214 A CN 201310263214A CN 104252980 B CN104252980 B CN 104252980B
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Abstract
The invention discloses the safety interlock of a kind of disconnecting switch fuse group, including a protective cover, a drive shaft, a push-and-pull switch and a signaling module；Described drive shaft is for controlling the break-make of described disconnecting switch fuse group；A spacing hole it is formed with in described drive shaft；Described push-and-pull switch includes a gag lever post；The break-make of signaling module described in the on-off control of described protective cover；The break-make of described signaling module makes the described gag lever post of described push-and-pull switch be inserted in described spacing hole thus described drive shaft is locked in open position, or makes described gag lever post exit from described spacing hole thus described drive shaft unlocked.Present invention also offers a kind of disconnecting switch fuse group, including a contact module, a driving module and above-mentioned safety interlock；The protective cover of described safety interlock is arranged on described contact module；The drive shaft of described safety interlock is positioned in described driving module for controlling the break-make of described contact module.
Description
Technical field
The present invention relates to a kind of disconnecting switch fuse group and safety interlock thereof.
Background technology
Switch is in use, it is often necessary to open protecgulum to change fuse or to check the inner case of switch.For peace
Full consideration, is the most first in separating brake by switch, opens protecgulum the most again.But, operator opens protecgulum after switch separating brake
During maintenance, switch, likely by other staff's false switching, causes operator to get an electric shock and the danger of switching damage.
Summary of the invention
This invention is intended to provide the safety interlock of a kind of disconnecting switch fuse group, keep apart in order to prevent from overhauling operator
When closing fuse group, disconnecting switch fuse group is by false switching.The present invention be also meant to provide a kind of use this safety interlock every
From switch fuse group.
Embodiments provide the safety interlock of a kind of disconnecting switch fuse group, including at least one protective cover, one
Individual drive shaft, a push-and-pull switch and a signaling module；Described drive shaft is for controlling the logical of described disconnecting switch fuse group
Disconnected；A spacing hole it is formed with in described drive shaft；Described push-and-pull switch includes a gag lever post；Wherein, described protective cover
It is turned on and off controlling the break-make of described signaling module；The break-make of described signaling module makes the described gag lever post of described push-and-pull switch insert
Enter in described spacing hole thus described drive shaft is locked in open position, or make described gag lever post exit from described spacing hole
Thus described drive shaft is unlocked.The switch utilizing protective cover carrys out the break-make of control signal module, and then makes the spacing of push-and-pull switch
Bar is inserted in the spacing hole in drive shaft thus drive shaft is locked in open position, or makes the gag lever post of push-and-pull switch from driving
Spacing hole on axle exits thus the rotation of drive shaft can be controlled as required；So, can prevent from keeping apart in operator's maintenance
When closing fuse group, disconnecting switch fuse group is by false switching.
According to a kind of embodiment, described protective cover includes a housing and an end cap；Described end cap is movably mounted to described
To be turned on and off described housing on housing；Described signaling module includes at least one auxiliary switch；Described auxiliary switch is with described
Push-and-pull switch connects；Described end cap be turned on and off controlling the break-make of described auxiliary switch.When end cap is opened, described auxiliary
The gag lever post switching off and then making push-and-pull switch is inserted in the spacing hole in drive shaft thus drive shaft is locked in disconnection position
Put, so, it is convenient to, automatically drive shaft is locked in open position, enhance the safety of disconnecting switch fuse group.
According to a kind of embodiment, described housing arranges a flange；Described auxiliary switch install on the housing and with institute
State Hp contacts.By arranging flange, location and installation auxiliary switch can be easy to.
According to a kind of embodiment, described auxiliary switch includes that a matrix, a push rod, a button and a plurality of signal connect
Mouthful；Described matrix is installed on the housing；Described push rod is installed on the matrix；Described button is installed on the matrix,
And can be pressed by described push rod thus described auxiliary switch is connected；Described signaling interface is connected with described push-and-pull switch；Described end
Lid be turned on and off make described push rod relative to described substrate motion.Utilize the motion of the on-off control push rod of end cap, structure letter
Singly, operation is simple and reliable.
According to a kind of embodiment, described end cap is provided with a pushing part；When described end cap is closed, described pushing part is to institute
State push rod to apply active force and make described push rod towards described substrate motion until button described in described push rod Continued depression.Utilization pushes away
Dynamic portion acts on push rod, can effectively ensure that button described in push rod Continued depression.
According to a kind of embodiment, described push rod is formed with a curved portions；Described pushing part acts in described curved portions.
By arranging curved portions, it is possible to decrease the friction between push rod and pushing part.
According to a kind of embodiment, described spacing hole is formed on the side face of described drive shaft and prolongs along the radial direction of described drive shaft
Stretch.After gag lever post is inserted in spacing hole, drive shaft turns can be effectively prevented.
According to a kind of embodiment, described push-and-pull switch also includes one for fixing the support of described push-and-pull switch, an electromagnetism
Assembly and two signaling interfaces；Described electromagnetic assembly is installed on the bracket；Described gag lever post is arranged on described electromagnetic assembly；
When described drive shaft is in described open position, described gag lever post points to described spacing hole；Described signaling interface is by described electromagnetism
Assembly is connected with described signaling module.The simple in construction of push-and-pull switch；And, when drive shaft is in open position, gag lever post
Pointing to spacing hole, if opening end cap, gag lever post i.e. can be plugged into drive shaft being locked easily in spacing hole.
Another embodiment of the present invention additionally provides a kind of disconnecting switch fuse group, including at least one contact module, described isolation
Switch fuse group also includes that one drives module and above-mentioned safety interlock；The protective cover of described safety interlock is arranged
On described contact module；The drive shaft of described safety interlock is positioned in described driving module for controlling described contact module
Break-make.The disconnecting switch fuse group using above-mentioned safety interlock can prevent from overhauling disconnecting switch fuse group operator
Time disconnecting switch fuse group by false switching.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can depend on
The content of book is practiced as directed, and in order to the above and other objects, features and advantages of the present invention can be become apparent from easily
Understand, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of disconnecting switch fuse group in one embodiment of the invention.
Fig. 2 is the principle schematic of disconnecting switch fuse group in Fig. 1.
Fig. 3 is protective cover and the enlarged diagram of signaling module of disconnecting switch fuse group in Fig. 1.
Fig. 4 is the enlarged diagram of the driving module of disconnecting switch fuse group in Fig. 1.
Fig. 5 is the drive shaft driving module and the relation schematic diagram being arranged between the push-and-pull switch driven in module.
Fig. 6 is the enlarged diagram of push-and-pull switch in Fig. 5.
Fig. 7 is the annexation schematic diagram of signaling module and push-and-pull switch.
Fig. 8 is view during push-and-pull switch locking drive shaft.
Fig. 9 is view during push-and-pull switch non-locking drive shaft.
Figure 10 is the enlarged diagram of signaling module in one embodiment of the invention.
Figure 11 is signaling module schematic diagram when being arranged on protective cover.
Figure 12 is the annexation schematic diagram of signaling module and protective cover.
Figure 13 is signaling module schematic diagram when being driven by protective cover.
Wherein, reference includes:
100 disconnecting switch fuse group 110 contact module 120 protective covers
121 end cap 122 housing 123 flanges
1220 pushing parts 130 drive module 131 casing
1310 opening 132 drive shaft 1321 jacks
1322 locating piece 1323 spacing holes 140 operate device
142 drive rod 143 handle 150 push-and-pull switches
151 support 152 electromagnetic assembly 153 gag lever posts
154 signaling interface 160 signaling module 161 auxiliary switches
162 matrix 163 push rod 164 buttons
165 signaling interface 166 curved portions 180 power supplys
170 self-tapping screws
Detailed description of the invention
In order to make the technical problem to be solved, technical scheme and beneficial effect clearer, below in conjunction with accompanying drawing
And embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to solve
Release the present invention, be not intended to limit the present invention.
Fig. 1 show the structural representation of disconnecting switch fuse group 100 in one embodiment of the invention.Fig. 2 show in Fig. 1
The principle schematic of disconnecting switch fuse group 100.As shown in Figures 1 and 2, disconnecting switch fuse group 100 include to
A few contact module 110, at least one protective cover 120, drive module 130,140, one, device of operation to push away
Drag switch 150 and a signaling module 160.Wherein, protective cover 120 can be arranged on corresponding contact in mode correspondingly
In module 110, can be used for guaranteeing the safe operation of disconnecting switch fuse group 100；Drive module 130 and contact module 110
Connect, and the break-make of contact module 110 can be controlled under operation device 140 effect；Signaling module 160 can be by protective cover 120
Trigger generation signal driving module 130 to be locked to drive push-and-pull switch 150 to run, can prevent from overhauling isolation operator
During switch fuse group 100, disconnecting switch fuse group 100 is by false switching.
Specifically, as it is shown on figure 3, protective cover 120 includes a housing 122 and an end cap 121.Housing 122 is arranged on
On contact module 110.The fuse (not shown) of disconnecting switch fuse group 100 may be provided in housing 122.End cap
It is arranged on housing 122 to 121 movable (as rotatable).When fuse be blown need change time, operator needs first to turn
Dynamic operation device 140 makes contact module 110 disconnect, and then operator just can open end cap 121, is opening end cap 121
During push-and-pull switch 150 run thus driving module 130 locked, so, operator can be replaced operation safely.
Additionally, a pushing part 1220 can be provided with on end cap 121.Pushing part 1220 is generally perpendicularly arranged on end cap 121.When
During relative to housing 122 rotary end cover 121, can together move along with end cap 121 and can trigger signaling module in pushing part 1220
160 produce signal (hereinafter will be described further).It addition, protective cover 120 also has interlock function, i.e. work as disconnecting switch
When fuse group 100/ contact module 110 is in closure state, protective cover 120 can not be opened.This interlock function can use
Existing structure realizes.
Drive module 130 can control the break-make of contact module 110 under operation device 140 effect.As shown in Figure 4, mould is driven
Block 130 includes a casing 131 and a drive shaft 132.An opening 1310 it is formed with on casing 131.Drive shaft 132
It is rotatably arranged in casing 131, and is positioned in opening 1310.As it is shown in figure 5, be positioned at opening 1310 in drive shaft 132
In one end in be formed with a jack 1321, can be used for hold nano operating device 140.In the embodiment shown in Fig. 5 to Fig. 7,
The cross section of jack 1321 is generally rectangular shaped, can be used for preventing from operating device 140 idle running i.e. drive shaft 132 in jack 1321
Together do not rotate along with operation device 140.Drive shaft 132 also includes a locating piece 1322.Locating piece 1322 is formed at slotting
In hole 1321, and can mate with operation device 140 to prevent operation device 140 from dallying in jack 1321 further.Additionally,
A spacing hole 1323 it is also formed with in drive shaft 132.Spacing hole 1323 approximately along drive shaft 132 radially extend and with
Jack 1321 communicates.
As shown in Figure 4, operation device 140 includes a drive rod 142 and a handle 143.One end of drive rod 142 is inserted
Entering in the jack 1321 of drive shaft 132, the other end is connected with handle 143；So, by turning handle 143, Ji Ketong
Bar 142 of overdriving drives drive shaft 132 to rotate, thus realizes the break-make of contact module 110.In one embodiment, drive rod
The cross section of 142 is generally rectangular shaped, and can be formed with the groove that can coordinate with locating piece 1322 on drive rod 142.
As shown in Figure 5 and Figure 6, push-and-pull switch 150 includes a support 152, gag lever post of 151, electromagnetic assembly
153 and two signaling interfaces 154.Support 151 can be arranged on the casing 131 driving module 130 by screw etc..Electromagnetism group
Part 152 is arranged on support 151.Gag lever post 153 is arranged on electromagnetic assembly 152, and point in drive shaft 132 spacing
Hole 1323.As it is shown in fig. 7, electromagnetic assembly 152 is connected by signaling interface 154 with signaling module 160, for by signaling module
The 160 signal such as current signals produced input to electromagnetic assembly 152 and make electromagnetic assembly 152 that gag lever post 153 can be driven from driving
Spacing hole 1323 on axle 132 is removed, can move to the position shown in Fig. 9 from the position shown in Fig. 8, thus will locking
Drive shaft 132 unlock.In other words, if push-and-pull switch 150 receives aforementioned signal by signaling interface 154 can make limit
Position bar 153 is contracted to the state shown in Fig. 9；If push-and-pull switch 150 loses aforementioned signal, gag lever post 153 then can reset and stretch out
To original state as shown in Figure 8.
Fig. 7 show the annexation schematic diagram of signaling module 160 and push-and-pull switch 150.In the embodiment shown in fig. 7,
Signaling module 160 includes the auxiliary switch 161 of a plurality of series connection.The quantity of auxiliary switch 161 can fuse according to disconnecting switch
The number of phases of device group 100 determines.Such as, in the embodiment shown in fig. 11, disconnecting switch fuse group 100 has 4 phases and 4
Individual protective cover 120, correspondingly, 4 auxiliary switches 161 can be separately mounted on 4 protective covers 120.In one embodiment,
Each auxiliary switch 161 can be arranged on corresponding protective cover 120 by self-tapping screw 170 etc..For the ease of location auxiliary
Switch 161, as shown in figure 12, can arrange a flange 123 on the housing 122 of each protective cover 120；Auxiliary switch 161
It is arranged on housing 122 and contacts with flange 123 to realize location.
As shown in Figure 10, each auxiliary switch 161 includes a matrix 163, button 164 of 162, push rod and answers
Several signaling interfaces 165.Push rod 163 is rotatably mounted on matrix 162, and can be in protective cover 120 on end cap 121
Rotate relative to matrix 162 under the effect of pushing part 1220.For the ease of stress, push rod 163 can be provided with a curved portions 166,
So as the frictional force reduced between push rod 163 and pushing part 1220.Button 164 is arranged on matrix 162, and can be by push rod
163 pressing thus auxiliary switch 161 is connected.Signaling interface 165 is for being connected with other elements by wire.Such as, multiple
Several auxiliary switches 161 and push-and-pull switch 150 by wire, corresponding interface 165,154 is connected in series after with one
Power supply 180 connects, as seen in figs. 7 and 11.
Above-mentioned for the concrete structure of disconnecting switch fuse group 100 in one embodiment of the invention, brief description disconnecting switch fuse
The practical approach of group 100.
Fig. 2, Fig. 5 and Fig. 8 show the original state of push-and-pull switch 150.As shown in Fig. 2, Fig. 5 and Fig. 8, at least one
The end cap 121 of protective cover 120 is not turned off at least one auxiliary switch 161 i.e. and is in gate-dividing state, the limit on push-and-pull switch 150
Position bar 153 is in spacing hole 1323 enters into jack 1321；Now, drive shaft 132 can not operation device 140 or its
Rotate under his device effect, i.e. drive shaft 132 locking is made contact module 110 be in gate-dividing state by push-and-pull switch 150.
When needs disconnecting switch fuse group 100 closes, the end cap 121 of all protective covers 120 is closed so that whole
Auxiliary switch 161 connects.In the process, as it is shown on figure 3, work as along the direction shown in arrow A as (worked as protective cover downwards
120 when being in the position shown in Fig. 3) rotary end cover 121 time, the pushing part 1220 on end cap 121 moves closer to the auxiliary of correspondence
Help the push rod 163 on switch 161；When the pushing part 1220 on end cap 121 connects with the curved portions 166 on corresponding push rod 163
When touching, push rod 163 will be applied active force and make push rod 163 rotate up to push rod 163 Continued depression button towards matrix 162
164 make auxiliary switch 161 connect, as shown in figure 13.When whole auxiliary switches 161 connects, as it is shown in fig. 7, whole
Individual circuit communication makes push-and-pull switch 150 receive power supply signal, and makes gag lever post 153 be contracted to the state shown in Fig. 9, thus
The drive shaft 132 of locking is unlocked.Now, the drive rod 142 of operation device 140 can be inserted in jack 1321,
And turning handle 143 makes drive rod 142 rotate, so that contact module 110 closes, and then make disconnecting switch fuse group
100 connect.When disconnecting switch fuse group 100 is in closure state, due to the interlock function of protective cover 120, protective cover
120 can not be opened, with the harm preventing improper operation from may cause.
When the fuse blows in disconnecting switch fuse group 100 or need check disconnecting switch fuse group 100 internal structure
Time, drive shaft 132 can be rotated by operation device 140 and make contact module 110 be in gate-dividing state.When contact module 110
When being in gate-dividing state, the spacing hole 1323 in drive shaft 132 is directed at gag lever post 153, as shown in Figure 9.When opening arbitrarily
During the end cap 121 of protective cover 120, the pushing part 1220 on end cap 121 separates with the curved portions 166 on corresponding push rod 163,
Making push rod 163 no longer press button 164 causes auxiliary switch 161 to disconnect, as shown in Figure 2.As it is shown in fig. 7, when arbitrarily
When auxiliary switch 161 disconnects, push-and-pull switch 150 will lose power supply signal, and gag lever post 153 then can reset and reach such as Fig. 8 institute
The original state shown, locks again by drive shaft 132.Now, fuse can be changed safely or check disconnecting switch fusing
The internal structure of device group 100.
As it has been described above, disconnecting switch fuse group 100 utilizes the switch of end cap 121 in protective cover 120 in one embodiment of the invention
Carry out the break-make of control signal module 160, so make that the gag lever post 153 of push-and-pull switch 150 is inserted in drive shaft 132 spacing
It is locked in open position in hole 1323 thus by drive shaft 132, or makes the gag lever post 153 of push-and-pull switch 150 from drive shaft 132
On spacing hole 1323 in exit thus available action device 140 controls the rotation of drive shaft 132 as required；So, can prevent
Only when operator overhauls disconnecting switch fuse group 100, disconnecting switch fuse group 100 is by false switching, therefore, protective cover 120,
Signaling module 160, push-and-pull switch 150 and drive shaft 132 are referred to as safety interlock.
In sum, the invention discloses the safety interlock of a kind of disconnecting switch fuse group, including a protective cover, one
Individual drive shaft, a push-and-pull switch and a signaling module；Described drive shaft is for controlling the logical of described disconnecting switch fuse group
Disconnected；A spacing hole it is formed with in described drive shaft；Described push-and-pull switch includes a gag lever post；Wherein, described protective cover
It is turned on and off controlling the break-make of described signaling module；The break-make of described signaling module makes the described gag lever post of described push-and-pull switch insert
Enter in described spacing hole thus described drive shaft is locked in open position, or make described gag lever post exit from described spacing hole
Thus described drive shaft is unlocked.Present invention also offers a kind of disconnecting switch fuse group, including a contact module, one
Drive module and above-mentioned safety interlock；The protective cover of described safety interlock is arranged on described contact module；Described
The drive shaft of safety interlock is positioned in described driving module for controlling the break-make of described contact module.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and former
Any amendment, equivalent and the improvement etc. made within then, should be included within the scope of the present invention.
Claims (9)
1. the safety interlock of disconnecting switch fuse group (100), it is characterised in that described safety interlock bag
Include at least one protective cover (120), a drive shaft (132), a push-and-pull switch (150) and a signaling module (160)；
Described drive shaft (132) is used for controlling the break-make of described disconnecting switch fuse group (100)；Described drive shaft (132)
On be formed with a spacing hole (1323)；
Described push-and-pull switch (150) includes a gag lever post (153)；
Wherein, described protective cover (120) be turned on and off controlling the break-make of described signaling module (160)；Described signal mode
The break-make of block (160) makes the described gag lever post (153) of described push-and-pull switch (150) be inserted in described spacing hole (1323)
Thus described drive shaft (132) is locked in open position, or make described gag lever post (153) from described spacing hole (1323)
In exit thus by described drive shaft (132) unlock.
Safety interlock the most according to claim 1, it is characterised in that described protective cover (120) includes a shell
Body (122) and an end cap (121)；Described end cap (121) is movably mounted on described housing (122) open or closes
Close described housing (122)；
Described signaling module (160) includes at least one auxiliary switch (161)；Described auxiliary switch (161) and described push-and-pull
Switch (150) connects；Described end cap (121) be turned on and off controlling the break-make of described auxiliary switch (161).
Safety interlock the most according to claim 2, it is characterised in that arrange on described housing (122) one convex
Edge (123)；Described auxiliary switch (161) is arranged on described housing (122) and above and contacts with described flange (123).
Safety interlock the most according to claim 2, it is characterised in that
Described auxiliary switch (161) includes a matrix (162), a push rod (163), a button (164) and plural number
Individual signaling interface (165)；
Described matrix (162) is arranged on described housing (122)；
Described push rod (163) is arranged on described matrix (162)；
Described button (164) is arranged on described matrix (162), and can be by described push rod (163) pressing thus by described auxiliary
Switch (161) is helped to connect；
Described signaling interface (165) is connected with described push-and-pull switch (150)；
Being turned on and off of described end cap (121) makes described push rod (163) move relative to described matrix (162).
Safety interlock the most according to claim 4, it is characterised in that described end cap (121) is provided with one and pushes away
Dynamic portion (1220)；When described end cap (121) is closed, described pushing part (1220) are to described push rod (163) applying effect
Power makes described push rod (163) towards described matrix (162) motion until button (164) described in described push rod (163) Continued depression.
Safety interlock the most according to claim 5, it is characterised in that described push rod is formed with one on (163)
Curved portions (166)；Described pushing part (1220) acts in described curved portions (166).
Safety interlock the most according to claim 2, it is characterised in that described spacing hole (1323) is formed at described
On the side face of drive shaft (132) and radially extending along described drive shaft (132).
Safety interlock the most according to claim 2, it is characterised in that described push-and-pull switch (150) also includes one
Individual being used for fixes the support (151) of described push-and-pull switch (150), an electromagnetic assembly (152) and two signaling interfaces (154)；
Described electromagnetic assembly (152) is arranged on described support (151)；
Described gag lever post (153) is arranged on described electromagnetic assembly (152)；When described drive shaft (132) is in described disconnection
During position, described gag lever post (153) points to described spacing hole (1323)；
Described electromagnetic assembly (152) is connected by described signaling interface (154) with described signaling module (160).
9. disconnecting switch fuse group (100), including at least one contact module (110), it is characterised in that described every
A peace driven in any of the one of module (130) and claim 1 to 8 is also included from switch fuse group (100)
Full interlock；The protective cover (120) of described safety interlock is arranged on described contact module (110)；Described safety
The drive shaft (132) of interlock is positioned at the break-make being used for controlling described contact module (110) in described driving module (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310263214.3A CN104252980B (en) | 2013-06-27 | 2013-06-27 | Disconnecting switch fuse group and safety interlock thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310263214.3A CN104252980B (en) | 2013-06-27 | 2013-06-27 | Disconnecting switch fuse group and safety interlock thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104252980A CN104252980A (en) | 2014-12-31 |
| CN104252980B true CN104252980B (en) | 2016-12-28 |
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| CN201310263214.3A Expired - Fee Related CN104252980B (en) | 2013-06-27 | 2013-06-27 | Disconnecting switch fuse group and safety interlock thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229177A (en) * | 2016-08-20 | 2016-12-14 | 嘉兴市创辉电气工程有限公司 | A kind of double-throw knife-like switch of band brake lock |
| CN106451739A (en) * | 2016-08-20 | 2017-02-22 | 嘉兴市正辉电力设备有限公司 | Low-voltage switch cabinet |
| CN107946116B (en) * | 2016-10-13 | 2019-11-08 | 西门子公司 | The Handleset and switching device of switching device |
| CN108288554B (en) * | 2018-01-23 | 2023-11-24 | 广东海悟科技有限公司 | Fuse component for realizing interlocking |
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| CN101944455A (en) * | 2010-09-30 | 2011-01-12 | 施耐德万高（天津）电气设备有限公司 | Isolating switch fuse set with locking function while separating brake |
| CN202871670U (en) * | 2012-11-05 | 2013-04-10 | 唐山盾石电气有限责任公司 | Interlocked operating mechanism of isolation switch box |
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| CN104252980A (en) | 2014-12-31 |
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