CN103177887B - Back locking deivce of metal-enclosed switchgear and metal-enclosed switchgear - Google Patents
Back locking deivce of metal-enclosed switchgear and metal-enclosed switchgear Download PDFInfo
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- CN103177887B CN103177887B CN201110436589.6A CN201110436589A CN103177887B CN 103177887 B CN103177887 B CN 103177887B CN 201110436589 A CN201110436589 A CN 201110436589A CN 103177887 B CN103177887 B CN 103177887B
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- slide plate
- enclosed switchgear
- connecting lever
- earthed switch
- chamber door
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Abstract
The invention relates to a misoperation prevention back locking deivce applied to a metal-enclosed switchgear, in particular to a cable chamber door and switch joint locking device. The back locking deivce of the metal-enclosed switchgear comprises a switchgear body, a blocking mechanism, a transmission mechanism and a trigger mechanism, wherein an earthed switch operation shaft is arranged on the switchgear body. The trigger mechanism is stressed when a cable chamber door is closed and drives the blocking mechanism through the transmission mechanism, and blocking on rotating of the earthed switch operation shaft is unlocked; and when the cable chamber door is opened, the trigger mechanism can reset under the effect of gravity of parts of the trigger mechanism and drives the blocking mechanism through the transmission mechanism, and rotating of the earthed switch operation shaft is blocked. Compared with the prior art, gravity of the parts of the trigger mechanism serves as driving force for resetting of the blocking mechanism and is more reliable than a spring, and good achievement of five-prevention requirements is facilitated.
Description
Technical field
The present invention relates to a kind of backlocking device for preventing maloperation for metal enclosed switchgear, more particularly to electricity
Cable room door and the device of switch gearing locking.
Background technology
Metal enclosed switchgear (is commonly called as switch cubicle), is the distribution switchgear commonly used in power system, as one kind
Electric equipment, is equipment with certain maloperation function that prevents to guarantee power network safe operation, equipment and the safety of personnel
Important indicator, regulation of the national standard to the equipment of certain specification in this respect mainly has：Prevent mistake point, falsely close circuit breaker；It is anti-
Leukorrhagia stopping load point, conjunction disconnecting switch；Prevent band cable address (conjunction) earth lead (earthed switch) from preventing line with ground (switch) from closing a floodgate；It is anti-
Only mistakenly entering charged chamber.Referred to as " five prevent ".
Specifically, the invention refers to how to realize the on off state of cable chamber door and switchgear closing operation
Between backlocking, i.e., to ensure under cable chamber door opening, switchgear can not close a floodgate (by limit earthed switch behaviour
The rotation for making axle is realized indirectly), and this restriction is released again in the state of closing in cable chamber door so that switch sets
It is standby safely and successfully to close a floodgate.
The Chinese utility model patent bulletin text of Patent No. ZL201020195518.2 discloses a kind of backlocking dress
Put, its structure is that set, earthed switch operation axial end and the respective inner surfaces for covering are provided with earthed switch operation shaft end
Between spring is set, the outer surface department of set is arranged to square, and the periphery of earthed switch operating shaft is provided with screw, and it is from set
On bar hole stretch out be the two formed axial sliding fit relation guiding mechanism, corresponding square opening is set on switch cubicle；
When closing cable chamber door, door body extruded sleeve overcomes the pressure of spring to make set slide to the right, square is deviate from from square opening, this
Under state earthed switch operating shaft can rotate under operation (certainly due to the effect of screw, earthed switch operating shaft and set not
Can diametrically rotate, therefore be turned together with set)；When opening cable chamber door, the pressure against the ends of set disappear, in the work of spring
With under, relative to ground a switching manipulation axial direction left side slides into square in square opening to set, now set and earthed switch operating shaft
Rotation receives prevention, and now just earthed switch cannot be operated, and is also impossible to carry out switch combined floodgate, it is therefore prevented that close by mistake
Lock, realizes backlocking.
As a result of spring as the driving force for resetting, therefore reliability is subject to spring-mass and life-span to said structure
Affect, it is normality that especially this equipment door body is closed, and such most of the time spring is all the state being extruded, it is easy to tired
Strain is bad.When closing additionally, due to door body, rotary set is directly touched all the time, cause unnecessary friction and wear,
Also other problems are easily brought.
The Chinese invention patent application publication of Patent No. ZL201010232999.4 discloses a kind of backlocking dress
Put, it is similar to that clutch, be also that, used as the driving force for resetting, reliability is affected using spring force.
The content of the invention
It is an object of the invention to provide a kind of simple structure, easy to operate, easy making for metal enclosed switch
The backlocking device and corresponding metal enclosed switchgear of equipment.
In order to solve the above problems, the backlocking device of the metal enclosed switchgear of the present invention includes switching mechanism sheet
Body, is provided with earthed switch operating shaft on switching mechanism body, also including blocking mechanism, drive mechanism and trigger mechanism；It is described
Trigger mechanism when cable chamber door is closed stress and by drive mechanism drive blocking mechanism, release to the earthed switch operate
The prevention that axle is rotated, when cable chamber door is opened, trigger mechanism can reset and by transmission under itself part action of gravity
Mechanism drives blocking mechanism, prevents the rotation of the earthed switch operating shaft.
Above-mentioned trigger mechanism includes the crossbeam for installing cable chamber door, and arranging on the crossbeam can be under self gravitation
Slide in and out to its outer end stretch out the crossbeam side, when cable chamber door is closed, outer end is gone back by the shear force slid inward of door
Slide plate；The inner of the slide plate couples with drive mechanism.
Above-mentioned blocking mechanism includes the earthed switch operating shaft catch being fixed in the earthed switch operating shaft, also includes
Central point is hinged on the connecting lever baffle plate on the switching mechanism body, and the connecting lever baffle plate is with stop arm and linking arm；It is described
The linking arm of connecting lever baffle plate is coupled by drive mechanism with the inner of the slide plate, and the stop arm of the connecting lever baffle plate can turned
Arm flapper to certain position is prevented or is released prevention to the rotation for being grounded switching manipulation axle bumper piece.
When the setting of above-mentioned drive mechanism causes the slide plate to slide in and out, the connecting lever flapper is to its stop arm energy
The rotation of the earthed switch operating shaft catch is enough prevented, during the slide plate slid inward, the connecting lever flapper hinders to it
Blocking arm releases the prevention rotated to the earthed switch operating shaft catch.
Above-mentioned drive mechanism includes slide plate contact plate and connecting rod, and the slide plate contact plate central point is hinged on the switching on and shutting down
On structure body, one end and the inner of the slide plate of the slide plate contact plate are hinged, the other end of the slide plate contact plate and institute
The one end for stating connecting rod is hinged, and the other end and the linking arm of connecting lever baffle plate of the connecting rod are hinged.
Slide plate mounting seat is set on above-mentioned crossbeam, and the slide plate is arranged in the slide plate mounting seat.
Present invention also offers a kind of metal enclosed switchgear, it uses above-mentioned backlocking device.
Compared with prior art, the driving force that 1. present invention resets by the gravity of part itself as blocking mechanism, compared with
Spring it is more reliable, contribute to the requirement of preferably realization " five prevent "；2. because the part of the effect by door body power is cunning
Piece, the slide plate is shaped such that the active force that door body impacts to it is shear force, therefore the impulsive force that slide plate and whole mechanism are subject to
It is very gentle, therefore ensure that the noise that equipment is closed the door is little, mechanism action abrasion is little；3. existing crossbeam portion is taken full advantage of
Part, as the body for installing trigger mechanism (slide plate etc.), it is not necessary to install special firm banking on equipment cabinet, it is to avoid
The various and complicated structure of parts.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the partial enlarged drawing of part shown in A in Fig. 1.
Labelling in figure：1. switching mechanism body；2. connecting lever baffle plate；3. catch；4. switching manipulation axle；5. connecting rod；6. slide plate
Contact plate；7. slide plate fixed seat；8. slide plate；9. crossbeam；10. cable chamber door.
Specific embodiment
The invention refers to how to realize between the on off state of cable chamber door and switchgear closing operation
Backlocking, i.e., will ensure that switchgear can not close a floodgate under cable chamber door opening, and the feelings in cable chamber door in closing
Under condition, this restriction is released again so that switchgear can close a floodgate.Because existing equipment is mostly by earthed switch and is opened
Pass equipment lock is integrated, and earthed switch is unable to separating brake and then switchs and can not cooperate, thus actual Jing frequently be at that time picture
The documents technical scheme that background section is quoted like that, is prevented by the rotation to being grounded switching manipulation axle and releases this
Plant and prevent to realize the control to closing a floodgate.Preventing the rotation of earthed switch operating shaft can prevent grounding switch tripping, further
Make switch cannot realize close a floodgate, so as to just be prevented from cable chamber door opening under close a floodgate maloperation, this be existing skill
Art.
The present invention includes being integrated with the switching mechanism body 1 of earthed switch, and on switching mechanism body 1 earthed switch is provided with
Operating shaft 4, cable chamber door 10 nearby arranges trigger mechanism, and blocking mechanism, trigger mechanism and stop are arranged on switching mechanism body 1
Mechanism is coupled by drive mechanism, as shown in Figure 1.
Trigger mechanism includes the crossbeam 9 for installing cable chamber door 10, and arranging on crossbeam 9 can be under self gravitation outwards
Slide into the slide plate that the side of crossbeam 9 is stretched out in its outer end, outer end is gone back by the shear force slid inward of door when cable chamber door 10 is closed
8；The inner of slide plate 8 couples with drive mechanism.In the present embodiment, it is preferably to be installed, slide plate is installed on crossbeam 9 and is fixed
Seat 7, arranges slide plate 8 in slide plate fixed seat 7.
Blocking mechanism includes the earthed switch operating shaft catch 3 being fixed in earthed switch operating shaft 4, also including central point
The connecting lever baffle plate 2 being hinged on switching mechanism body 1, connecting lever baffle plate 2 is with stop arm and linking arm；The linking arm of connecting lever baffle plate
Coupled with the inner of slide plate 8 by drive mechanism, the stop arm of connecting lever baffle plate 2 can turn to certain position in connecting lever baffle plate 2
Rotation to being grounded switching manipulation axle bumper piece 3 is prevented or is released prevention.
Drive mechanism includes slide plate contact plate 6 and connecting rod 5, and the central point of slide plate contact plate 6 is hinged on switching mechanism body 1
On, one end and the inner of slide plate 8 of slide plate contact plate 6 are hinged, and the other end and one end of connecting rod 5 of slide plate contact plate 6 are hinged, even
The other end of bar 5 is hinged with the linking arm of connecting lever baffle plate 2.
When the setting of above-mentioned drive mechanism causes slide plate 8 to slide in and out, connecting lever baffle plate 2 turns to its stop arm and can prevent
The rotation of earthed switch operating shaft catch 3, during 8 slid inward of slide plate, connecting lever baffle plate 2 turns to its stop arm releasing and ground connection is opened
Close the prevention that operating shaft catch 3 is rotated.
During slide plate 8 is shaped such that door body touches it, the power of generation is gentle tangential force.
When actually used, it is assumed that what original state cable chamber door 10 was open, under this state slide plate 8 due to its own
The effect of gravity, in the such a poised state that outer end portion is stretched out in the side of crossbeam 9；Cable chamber door 10 is now closed,
Door body touches the outer end of slide plate 8, produces tangential force F, and in the presence of power F, slide plate 8 overcomes gravity, and slid inward is straight
Completely maintain an equal level with the side of crossbeam 9 to its outer end, during this slide plate 8 slides, the displacement of generation causes the band of slide plate 8
Dynamic slide plate contact plate 6 is rotated clockwise, and connecting lever baffle plate 2 is rotated counterclockwise, and the stop arm of connecting lever baffle plate 2 is removed to the left, so as to solve
Except to being grounded the restriction that switching manipulation axle bumper piece 3 and earthed switch operating shaft 4 are rotated so that the conjunction that earthed switch can be safe
Lock；When cable chamber door 10 is opened, door body retreats the conflict eliminated to the outer end of slide plate 8, and tangential force F disappears, and slide plate 8 is at itself
Slide in and out under action of gravity to its outer end portion and stretch out the side of crossbeam 9 arrival poised state, in the process, the position of generation
Move and cause slide plate 8 to drive slide plate contact plate 6 to rotate counterclockwise, connecting lever baffle plate 2 is rotated clockwise, the stop arm of connecting lever baffle plate 2 to
Move right, so as to be blocked in the rotating path of earthed switch operating shaft catch 3, limit catch 3 and earthed switch operating shaft 4
Rotation, now just earthed switch cannot be operated, be also impossible to carry out switch combined floodgate, it is therefore prevented that cable chamber door open
False switching under state, realizes backlocking.
It should be noted that in the present embodiment, " slip " of slide plate 8 is not linear slide, due to it not very
The shape of rule and to avoid being interfered with neighbouring parts, actual motion track is " swing " with certain rotation.Separately
Outer conduct is improved, and slide plate 8 is preferably used Metal plate making, it is possible to achieve good sliding effect.
Certainly, in addition to " slide plate " structure of the present embodiment, trigger mechanism can also adopt other structure, as long as can borrow
Helping gravity can reset；It is double rocker mechanism that the drive mechanism of the present invention is actual, it is clear that, it is also possible to adopt other
Mechanism with said function is come the transmission realizing moving, such as gear, chain sprocket；Blocking mechanism is also, except this enforcement
Baffle structure and background section in example is given outside latch structure, square square hole structure, other to prevent and release
The mechanism of stop can also use, such as brake block structure.The above, all within protection scope of the present invention.
Invention additionally discloses no longer being gone to live in the household of one's in-laws on getting married using the metal enclosed switchgear (switch cubicle) of above-mentioned backlocking device with protection
State.
Compared with prior art, the driving force that 1. present invention resets by the gravity of part itself as blocking mechanism, compared with
Spring it is more reliable, contribute to the requirement of preferably realization " five prevent "；2. because the part of the effect by door body power is cunning
Piece, the slide plate is shaped such that the active force that door body is impacted to it is shear force, therefore the impact that slide plate and whole mechanism are subject to is very
Gently, equipment is closed the door noise is little, mechanism action abrasion is little；3. existing beam part is taken full advantage of, is touched as installing
Send out the body of mechanism (slide plate etc.), it is not necessary to which special firm banking is installed on equipment cabinet, it is to avoid parts it is various and
Complicated structure.
Claims (7)
1. a kind of backlocking device for metal enclosed switchgear, it includes switching mechanism body, in switching mechanism body
It is provided with earthed switch operating shaft；Also include blocking mechanism, drive mechanism and trigger mechanism；The trigger mechanism is in cable chamber door
Stress and blocking mechanism is driven by drive mechanism during closing, release the prevention rotated to the earthed switch operating shaft, it is special
Levy and be, when cable chamber door is opened, trigger mechanism can be resetted under itself part action of gravity and be driven by drive mechanism
Dynamic blocking mechanism, prevents the rotation of the earthed switch operating shaft；The drive mechanism is double rocker mechanism.
2. the backlocking device for metal enclosed switchgear according to claim 1, it is characterised in that the triggering
Mechanism includes the crossbeam for installing cable chamber door, and arranging on the crossbeam can slide in and out to its outer end under self gravitation
Stretch out the crossbeam side, the slide plate that outer end is gone back by the shear force slid inward of door when cable chamber door is closed；The slide plate
The inner couples with drive mechanism.
3. the backlocking device for metal enclosed switchgear according to claim 2, it is characterised in that the stop
Mechanism includes the earthed switch operating shaft catch being fixed in the earthed switch operating shaft, is also hinged on including central point described
Connecting lever baffle plate on switching mechanism body, the connecting lever baffle plate is with stop arm and linking arm；The linking arm of the connecting lever baffle plate
Coupled with the inner of the slide plate by drive mechanism, the stop arm of the connecting lever baffle plate can be in connecting lever flapper to necessarily
Position is prevented or is released prevention to the rotation for being grounded switching manipulation axle bumper piece.
4. the backlocking device for metal enclosed switchgear according to claim 3, it is characterised in that the transmission
When the setting of mechanism causes the slide plate to slide in and out, the connecting lever flapper to its stop arm can prevent the ground connection from opening
The rotation of operating shaft catch is closed, during the slide plate slid inward, the connecting lever flapper is released to its stop arm and connect to described
The prevention that ground switching manipulation axle bumper piece is rotated.
5. the backlocking device of metal enclosed switchgear according to claim 4, it is characterised in that the drive mechanism
Including slide plate contact plate and connecting rod, the slide plate contact plate central point is hinged on the switching mechanism body, and the slide plate connects
One end of touch panel is hinged with the inner of the slide plate, and the other end and one end of the connecting rod of the slide plate contact plate are hinged, institute
The other end and the linking arm of connecting lever baffle plate for stating connecting rod is hinged.
6. the backlocking device of the metal enclosed switchgear according to any one of claim 2～5, it is characterised in that described
Slide plate mounting seat is set on crossbeam, and the slide plate is arranged in the slide plate mounting seat.
7. a kind of metal enclosed switchgear, it is characterised in that it uses the backlocking described in any one of the claims 1～6
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436589.6A CN103177887B (en) | 2011-12-23 | 2011-12-23 | Back locking deivce of metal-enclosed switchgear and metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436589.6A CN103177887B (en) | 2011-12-23 | 2011-12-23 | Back locking deivce of metal-enclosed switchgear and metal-enclosed switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103177887A CN103177887A (en) | 2013-06-26 |
| CN103177887B true CN103177887B (en) | 2017-04-12 |
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ID=48637672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110436589.6A Active CN103177887B (en) | 2011-12-23 | 2011-12-23 | Back locking deivce of metal-enclosed switchgear and metal-enclosed switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103177887B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533992A (en) * | 2009-02-24 | 2009-09-16 | 上海大华电器设备有限公司 | Interlocking device of metal-enclosed switchgear grounding switch and cable room door |
| DE102008019986A1 (en) * | 2008-04-21 | 2009-11-12 | Rittal Gmbh & Co. Kg | Mounting element i.e. hood-like mounting element, for use as protective cover for e.g. lining of plug connectors, has lever actuating interlocking device of door, hinged at frame, over interface |
| CN201584319U (en) * | 2009-12-28 | 2010-09-15 | 厦门明翰电气有限公司 | Anti-maloperation locking device of medium-pressure switch cabinet grounding switch |
| CN202423056U (en) * | 2011-12-23 | 2012-09-05 | 青岛特锐德电气股份有限公司 | Back-locking device of metal sealing switch equipment and metal sealing switch equipment |
-
2011
- 2011-12-23 CN CN201110436589.6A patent/CN103177887B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008019986A1 (en) * | 2008-04-21 | 2009-11-12 | Rittal Gmbh & Co. Kg | Mounting element i.e. hood-like mounting element, for use as protective cover for e.g. lining of plug connectors, has lever actuating interlocking device of door, hinged at frame, over interface |
| CN101533992A (en) * | 2009-02-24 | 2009-09-16 | 上海大华电器设备有限公司 | Interlocking device of metal-enclosed switchgear grounding switch and cable room door |
| CN201584319U (en) * | 2009-12-28 | 2010-09-15 | 厦门明翰电气有限公司 | Anti-maloperation locking device of medium-pressure switch cabinet grounding switch |
| CN202423056U (en) * | 2011-12-23 | 2012-09-05 | 青岛特锐德电气股份有限公司 | Back-locking device of metal sealing switch equipment and metal sealing switch equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103177887A (en) | 2013-06-26 |
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