CN107808788B - Interlocking device and assembly of switch cabinet and switch cabinet - Google Patents
Interlocking device and assembly of switch cabinet and switch cabinet Download PDFInfo
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- CN107808788B CN107808788B CN201711299236.XA CN201711299236A CN107808788B CN 107808788 B CN107808788 B CN 107808788B CN 201711299236 A CN201711299236 A CN 201711299236A CN 107808788 B CN107808788 B CN 107808788B
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- locking
- operating shaft
- switch
- hinge
- interlocking device
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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
- H01H9/20—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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Abstract
The interlocking device of the switch cabinet comprises an actuating piece (12), a hinged piece (14), a locking rod (16), a locking piece (24) and a connecting rod (26), wherein the actuating piece is fixedly arranged on an operating shaft (50) of the grounding switch and rotates , the hinged piece is hinged with the actuating piece, the locking rod moves along an actuating direction (X), the hinged piece is connected with the locking rod, so that the operating shaft moving to an opening position drives the locking rod to move to an unlocking position for unlocking a disconnecting switch of the switch cabinet, the operating shaft moving to a closing position drives the locking rod to move to a locking position for locking the disconnecting switch, the locking piece moves between a locking position of a locking cable chamber and an opening position of an unlocking cable chamber , the connecting rod is respectively hinged with the locking piece and the locking rod, so that the operating shaft moving to the opening position drives the locking piece to move to the locking position of the locking cable chamber , and the operating shaft at the closing position drives the locking piece to move to the opening position of the unlocking cable chamber .
Description
Technical Field
The invention relates to interlocking devices, in particular to an interlocking device of switch cabinets, and also relates to interlocking assemblies and switch cabinets with the interlocking device.
Background
In the use of a switch cabinet, such as a medium-high voltage switch cabinet, it is required that the cable compartment of the switch cabinet is locked and cannot be opened when the grounding switch of the switch cabinet is opened, and that the disconnector of the switch cabinet is not closed when the grounding switch of the switch cabinet is closed.
To achieve the above function, interlocking devices which are reliable and stable in operation need to be designed.
Disclosure of Invention
The invention aims to provide an interlocking device of a switch cabinet, which has simple structure and reliable operation, and can ensure that a cable chamber of the switch cabinet cannot be locked and unlocked when a grounding switch of the switch cabinet is opened and ensure that a disconnecting switch of the switch cabinet cannot be closed when the grounding switch of the switch cabinet is closed.
Another objects of the present invention are to provide interlocking assemblies with the above-described interlocking devices.
It is a further object of to provide switch cabinets with the above described interlock assembly.
The invention provides an interlocking device of a switch cabinet, which is used for realizing interlocking among a grounding switch, a cable chamber and a disconnecting switch, wherein an operating shaft of the grounding switch can rotate around the axial direction of the grounding switch to rotate between opening positions and closing positions, the interlocking device comprises executing pieces, articulated pieces, locking rods, locking pieces and connecting rods, wherein the executing pieces can be fixedly arranged on the operating shaft and can rotate along with the operating shaft , the articulated pieces can be articulated with the executing pieces, the locking rods can move along executing directions, the articulated pieces can be connected with the locking rods, so that the operating shaft moving to the opening positions can drive the locking rods to move to the unlocking positions of the disconnecting switch, the operating shaft moving to the closing positions can drive the locking rods to move to the locking positions of the locking disconnecting switch, the locking pieces can move between the locking positions of a locking cable and the unlocking positions of an unlocking cable chamber locking position, the connecting rods are respectively articulated with the locking pieces, so that the operating shaft moving to the locking positions can drive the locking rods to move to the opening positions of the locking cable chamber , and the locking pieces can drive the operating shaft to move to the unlocking positions of the locking chamber 384.
The interlocking device of the switch cabinet has the advantages of simple structure and reliable operation, and can ensure that the cable chamber of the switch cabinet cannot be locked and opened when the grounding switch of the switch cabinet is switched off, and the isolating switch of the switch cabinet cannot be switched on when the grounding switch of the switch cabinet is switched on.
In the exemplary embodiments of the interlocking device of the switch cabinet, the hinge axis of the hinge member is parallel to the operation axis.
In the exemplary embodiments of the interlocking device of the switch cabinet, the actuating direction of the locking rod is perpendicular to the operating shaft.
In exemplary embodiments of the interlocking device of the switch cabinet, the moving direction of the locking piece is parallel to the operating shaft, and the locking piece is provided with th locking tongues close to the th locking tongues of the locking rod and connecting ends far away from the locking rod in the moving direction, and the connecting rod is hinged at the connecting ends.
In exemplary embodiments of the switchgear interlocking device, the switchgear interlocking device further comprises positioning frames 22, and the interlocking device further comprises tension springs, both ends of which are respectively connected between the connecting ends of the positioning frames and the locking elements.
In the exemplary embodiments of the interlocking device of the switch cabinet, the locking piece is provided with guide holes arranged along the moving direction, the positioning frame also comprises two guide parts capable of penetrating through the guide holes, and the movement of the locking piece can be more stable by adopting the design.
In exemplary embodiments of the interlocking device of the switch cabinet, ends of the hinged pieces connected with the locking rods are provided with long holes, and the locking rods further comprise connecting parts capable of penetrating through the long holes.
In exemplary embodiments of the interlocking device of the switch cabinet, the actuating member comprises connecting frames and connecting pins, wherein each connecting frame comprises connecting plates, pairs of connecting walls and hinge plates, each connecting plate is provided with a connecting hole capable of being sleeved on the operating shaft, pairs of connecting walls are connected to the connecting plates, the hinge plates are connected to connecting walls, the hinge plates are perpendicular to the axial direction of the operating shaft, the hinge members are hinged to the hinge plates, and the connecting pins can penetrate through pairs of connecting walls and are used for penetrating through the operating shaft.
In the exemplary embodiments of the interlocking device of the switch cabinet, the blocking lever comprises second locking tongues arranged in the actuating direction X.
The invention also provides interlocking components, which comprises operating shafts of the grounding switches and interlocking devices, wherein the operating shafts of the grounding switches can rotate around the axial direction of the operating shafts so as to rotate between opening positions and closing positions, and actuating pieces of the interlocking devices are fixedly arranged on the operating shafts.
The invention also provides switch cabinets, which comprise cable chambers , isolating switches and interlocking assemblies.
The above features, technical features, advantages and implementations of the interlocking devices, components and switchgear of the switchgear will be further explained in with reference to the following description of the preferred embodiments in a clearly understandable manner in conjunction with the accompanying drawings.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a schematic diagram of exemplary embodiments of an interlocking device for a switch cabinet, and a state diagram of a grounding switch of the switch cabinet when the grounding switch is opened.
Fig. 2 is a schematic diagram illustrating a state of the grounding switch of the switch cabinet when the grounding switch is closed.
Fig. 3 is an exploded view illustrating the locking member and the positioning frame of the interlocking device.
FIG. 4 is a schematic diagram illustrating exemplary embodiments of actuators of an interlock device.
Description of the reference symbols
12 actuator
122 connecting frame
124 connecting plate
126 connecting wall
128 hinge plate
129 connecting pin
14 hinged member
142 long hole
142 articulated shaft
16 locking piece
162 connecting part
164 second bolt
22 positioning frame
225 guide part
24 closure
242 nd th latch bolt
244 connecting end
245 guide hole
26 connecting rod
28 tension spring
40 operating mechanism of isolating switch
50 operating shaft
52 operate the axial direction of the shaft.
Detailed Description
In order to more clearly understand the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
In this document, "exemplary" means "serving as an example, instance, or illustration," and any illustration, embodiment, or portion thereof that is described herein as "exemplary" is not to be construed as being preferred or advantageous.
In addition, for the sake of simplicity and comprehension of the drawings, only of the components having the same structure or function are schematically illustrated or only of the components are labeled in some figures.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate positional relationships between the relevant portions, and do not limit their absolute positions.
In this document, "", "second", etc. are used only for distinguishing one from another, and do not indicate their degree of importance, order, etc.
In this context, "parallel," "perpendicular," and the like are not strictly mathematical and/or geometric limitations, but also encompass tolerances as would be understood by one skilled in the art and permitted by fabrication or use.
Fig. 1 is a schematic diagram illustrating exemplary embodiments of an interlock device of a switchgear, fig. 1 is a schematic diagram illustrating a state of an earthing switch of the switchgear being opened, and fig. 2 is a schematic diagram illustrating a state of the earthing switch of the switchgear being closed.
As shown in fig. 1, the operating shaft 50 of the earthing switch of the switchgear can be rotated about its axial direction to switch between the open position shown in fig. 1 and the closed position shown in fig. 2. That is, when the operating shaft 50 is at the opening position, the grounding switch is in the opening state; when the operating shaft 50 is at the closing position, the ground switch is in the closing state.
The switchgear interlock arrangement is shown in solid lines and includes actuators 12, hinged members 14, latches 16, latches 24 and connecting rods 26.
In the embodiment shown in fig. 1, 2 and 4, and particularly as shown in fig. 4, the actuating element 12 may include connecting frames 122 and connecting pins 129, wherein the connecting frames 122 include connecting plates 124 and pairs of connecting walls 126 and connecting the connecting plates 124 and hinge plates 128 connecting the connecting walls, the connecting plates 124 are provided with connecting holes 125 capable of being sleeved on the operating shaft 50, the hinge plates 128 are perpendicular to the axial direction 52 of the operating shaft 50, after the connecting plates 124 are sleeved on the operating shaft 50, the connecting pins 129 are capable of penetrating pairs of connecting walls 126 and the operating shaft 50 to enable the actuating element 12 to be fixedly arranged on the operating shaft 50 of the grounding switch, and of course, the actuating element 12 may be fixedly arranged on the actuating element 12 in other structures or manners according to different design requirements.
As shown in FIGS. 1 and 2, the hinged member 14 can be hinged to the actuator 12, such as the hinged plate 128 of the actuator 12 shown in FIG. 4. in the embodiment shown in the drawings, the hinged shaft 142 of the hinged member 14 can be parallel to the operating shaft 50, which can provide more stable transmission of the overall structure. in the embodiment shown in the drawings, the hinged member 14 is rod-like structures, although other structures can be used depending on design requirements.A detent lever 16 can move in the actuating direction X shown in FIG. . the hinged member 14 is connected to the detent lever 16. in the embodiment shown in the drawings, the actuating direction X can be perpendicular to the operating shaft 50, which can also provide more stable transmission of the overall structure.
The locking element 24 is movable between a locking position, as shown in fig. 1, and an unlocking position, as shown in fig. 2, in the embodiment shown in the drawings, positioning brackets 22 are correspondingly designed for positioning the moving direction of the locking element 24, and the structure of the positioning brackets is described in detail later with reference to fig. 3, and the connecting rod 26 is hinged to the locking element 24 and the locking lever 16, respectively.
When the operating shaft 50 of the earthing switch is in its trip position shown in fig. 1, the latch lever 16 can be moved to the position shown in fig. 1 due to the linkage relationship between the operating shaft 50 and the latch lever 16 via the actuating member 12 and the hinge member 14, when the operating shaft 50 of the earthing switch is in its trip position shown in fig. 1, the latch lever 16 cannot influence the operation of the operating mechanism 40 of the left-hand disconnector shown in the drawing (i.e., the operating mechanism moves in the up-down direction in the drawing), i.e., the operating shaft 50 moving to the trip position can drive the latch lever 16 to move to the unlatch position of the disconnector cabinet, when the operating mechanism of the disconnector can move up and down to close the disconnector, and can return to the position shown in fig. 1 after closing, and if the operating shaft 50 of the earthing switch is rotated to its trip position in the clockwise direction shown by the arrow in fig. 1, the operating shaft 50 can drive the latch lever 16 to move to its trip position to the trip position shown in the clockwise direction shown in fig. 2, i.e., when the operating shaft 50 can not drive the operating mechanism 16 to move to the trip position of the disconnector cabinet in the second direction shown in the drawing, i.e., when the disconnecting switch is in the second embodiment, it can be understood that the operation of the disconnecting switch, and the disconnecting switch can be moved to the operation of the disconnecting switch, and the disconnecting switch can be moved to the disconnecting switch, and the operation of the disconnecting switch, when the disconnecting switch is performed by the operation of the disconnecting switch, the operation of the disconnecting switch, which the operation of the disconnecting switch, which the disconnecting switch, the disconnecting switch is performed by the operation of the disconnecting switch, which the.
The condition can avoid that technicians switch on the isolating switch by mistake under the condition that the grounding switch is switched on. This protects the equipment and also the personal safety.
Returning to the configuration shown in fig. 1, when operative shaft 50 is in the unlatched position shown in fig. 1, detent lever 16 is in the position shown in fig. 1, and detent lever 16 in this position has pulled, by way of connecting rod 26, detent 24 relative to carriage 22 (see also the configuration shown in fig. 3), such that detent 24 extends closer to detent 16 relative to carriage 22, and detent 24 prevents cable chamber from moving, and detent 24 extends, for example, into a channel (not shown) of cable chamber , to complete the latching of cable chamber , and to prevent cable chamber from opening, i.e., operative shaft 50 moving toward the unlatched position can move detent 24 to the latched position of detent chamber , whereas if operative shaft 50 of the ground switch is rotated to its latched position in a clockwise direction as shown by the arrow in fig. 1, operative shaft 50 is limited to moving detent lever 16 to the left in fig. by actuator 12 and hinge 14 until the position shown in fig. 2 is reached, and operative shaft 50 is pushed, and moved, relative to move detent lever 24 away from carriage 22, and vice versa, depending on whether the arrangement of course, the procedure, the arrangement shown in which the procedure, the arrangement shown in which detent lever 16, the procedure, the arrangement 16, the arrangement is performed to move, and whether latching of course, the procedure of which is performed by operative shaft 24, the procedure of which is performed by operative shaft 24, the arrangement 16, the procedure of which is performed to move operative shaft 24, the arrangement shown in which is performed to move operative shaft 24, the arrangement 16.
The interlocking device of the switch cabinet has simple structure and reliable operation, and can ensure that the cable chamber of the switch cabinet cannot be locked and unlocked when the grounding switch of the switch cabinet is switched off and ensure that the disconnecting switch of the switch cabinet cannot be locked and locked when the grounding switch of the switch cabinet is switched on.
In the embodiment shown in fig. 1 and 2, the end of the hinge 14 connected with the locking rod 16 is formed with long holes 143. the locking rod 16 further comprises connecting parts 162 capable of penetrating through the long holes 143. the above-mentioned connecting mode can make the connection and transmission of the hinge 14 and the locking rod 16 more stable.
In the embodiment shown in fig. 1 and 2, the moving direction Y of the locking element 24 is parallel to the operating axis 50, i.e. the moving direction Y may be perpendicular to the executing direction x. of course, the moving direction of the locking element 24 may not be parallel to the operating axis as long as it can achieve its corresponding function, regardless of the moving direction, the locking element 24 has the nd locking tongues 242 and near the locking lever 16 in the moving direction Y far from the connecting end 244 of the locking lever 16, and the connecting lever 26 is hinged to the connecting end 244. referring to fig. 3, the above structure is more reliable to transmit.
In the embodiment shown in fig. 1-3, the interlock device further includes spacers 22 and tension springs 28, wherein the two ends of each tension spring 28 are connected between the spacers 22 and the connecting end 244. the tension springs 28 provide a spring force that rapidly pulls the locking element 24 to move relative to the spacers 22 to the position shown in fig. 1 during the switching of the operating shaft 50 of the earthing switch from its on position (the position shown in fig. 2) to the off position (the position shown in fig. 1) to rapidly lock the cable chamber .
In the embodiment shown in fig. 3, the locking element 24 has guiding holes 245 arranged along the moving direction Y thereof, and the positioning frame 22 further includes two guiding portions 225 passing through the guiding holes 245, the two guiding portions 225 located at the guiding holes 245 can make the movement of the locking element 24 in the moving direction Y more stable during the movement of the locking element 24 relative to the positioning frame 22.
The present invention also provides interlocking assemblies, as shown in fig. 1 and 2, which include ground switch operating shafts 50 and of the interlocking devices described above, the ground switch operating shafts 50 being rotatable about their axial directions 52 to be able to rotate between open positions and closed positions, the actuating members 12 of the interlocking devices being fixed to the operating shafts 50.
The invention also provides switch cabinets, which comprise cable chambers , isolating switches and interlocking assemblies.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment contains independent technical solutions, and this description is only for clarity, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can be combined appropriately to form other embodiments that can be understood by those skilled in the art.
The series specification listed above is only a specific description of possible embodiments of the invention, and they are not intended to limit the scope of the invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the invention, are intended to be included in the scope of the invention.
Claims (11)
1. Interlocking device for a switchgear cabinet for interlocking between an earthing switch, a cable chamber and a disconnector, the operating shaft (50) of which is rotatable about its axial direction (52) between open and closed positions, characterized in that the interlocking device comprises:
actuating elements (12) for fastening to the operating shaft (50) and rotatable with the operating shaft (50) ;
hinged members (14) hingeable to the actuating member (12);
locking levers (16) which can be moved in an actuating direction (X) , the hinge (14) being connected to the locking levers (16) in such a way that an actuating shaft (50) moving into the open position can bring about a movement of the locking levers (16) into an unlocking position for unlocking the disconnector and an actuating shaft (50) moving into the closed position can bring about a movement of the locking levers (16) into a locking position for locking the disconnector;
latches (24) movable between a locked position locking the cable chamber and an unlocked position unlocking the cable chamber ;
connecting rods (26) respectively hinged to the locking piece (24) and the locking rod (16) so that the operating shaft (50) moving to the opening position can drive the locking piece (24) to move to the locking position and the operating shaft (50) moving to the closing position can drive the locking piece (24) to move to the opening position.
2. The interlocking device according to claim 1, characterized in that the hinge axes (142) of the hinge (14) are parallel to the operating axis (50).
3. The interlocking device according to claim 1, characterized in that the actuation direction (X) of the blocking lever (16) is perpendicular to the operating shaft (50).
4. The interlocking device according to claim 1, characterized in that the direction of movement (Y) of the locking element (24) is parallel to the operating shaft (50), and in that the locking element (24) has locking tongues (242) of the that are close to the blocking lever (16) and connecting ends (244) that are remote from the blocking lever (16) in the direction of movement (Y), the connecting rod (26) being hinged to the connecting ends (244).
5. The interlock of claim 4 further comprising spacers (22) and tension springs (28), wherein each end of the tension springs (28) is connected between the spacers (22) and the connecting ends (244) of the locking elements (24).
6. The interlock of claim 5,
the locking element (24) has guide holes (245) arranged in the direction of movement (Y),
the positioning frame (22) further comprises two guide parts (225) capable of penetrating through the guide holes (245).
7. The interlock of claim 1,
the end of the hinge (14) connected with the locking rod (16) is formed with long holes (143),
the locking rod (16) further comprises connecting parts (162) which can be arranged in the long holes (143) in a penetrating mode.
8. The interlock device according to claim 1, wherein said actuator (12) comprises:
link brackets (122), including:
connecting plates (124) provided with connecting holes (125) capable of being sleeved on the operating shaft (50),
pair of connecting walls (126) connected to the connecting plate (124), an
hinge plates (128) connected to of the connecting walls (126), the hinge plates (128) being perpendicular to the axial direction (52) of the operating shaft (50), the hinge member (14) being hinged to the hinge plates (128), and
connecting pins (129) passing through the pairs of connecting walls (126) and for passing through the operating shaft (50).
9. The interlocking device according to claim 1, characterized in that the blocking lever (16) comprises second locking tongues (164) arranged along the actuation direction (X).
10. An interlock assembly, characterized in that it comprises:
operating shafts (50) of the earthing switch, the operating shafts (50) of the earthing switch being capable of rotating around the axial direction (52) thereof so as to be capable of rotating between opening positions and closing positions, and
interlocking devices according to any of claims 1 to 9, the actuator (12) being fixed to the operating shaft (50).
11. Cubical switchboard, its characterized in that, it includes:
cable chambers ;
isolating switches, and
interlocking assemblies as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299236.XA CN107808788B (en) | 2017-12-08 | 2017-12-08 | Interlocking device and assembly of switch cabinet and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299236.XA CN107808788B (en) | 2017-12-08 | 2017-12-08 | Interlocking device and assembly of switch cabinet and switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107808788A CN107808788A (en) | 2018-03-16 |
| CN107808788B true CN107808788B (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711299236.XA Active CN107808788B (en) | 2017-12-08 | 2017-12-08 | Interlocking device and assembly of switch cabinet and switch cabinet |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11476647B1 (en) | 2021-04-22 | 2022-10-18 | Rockwell Automation Technologies, Inc. | Maintenance grounding device in motor control center with integrated interlock system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2648579Y (en) * | 2003-09-10 | 2004-10-13 | 唐嘉隆 | Mechanical interlocking operating mechanism for high-voltage switch cabinet |
| CN201051464Y (en) * | 2006-09-18 | 2008-04-23 | 河南森源电气股份有限公司 | Principle axis and ground rotating axis interlock machine for insulation switch |
| CN101557080B (en) * | 2009-05-18 | 2011-06-29 | 宁波天安（集团）股份有限公司 | Interlocking operating device used for high voltage switch cabinet |
| FR2968144B1 (en) * | 2010-11-30 | 2012-11-30 | Schneider Electric Ind Sas | INTERLOCKING DEVICE FOR SECURING ACCESS TO THE CABLE BOX OF AN ELECTRIC CELL AND ELECTRIC CELL COMPRISING SUCH A DEVICE |
| KR101522265B1 (en) * | 2013-10-16 | 2015-05-21 | 엘에스산전 주식회사 | Voltage transformer room door interlock device of panel for vacuum circuit breaker |
| CN104779099B (en) * | 2015-04-13 | 2016-12-07 | 山西汾西机电有限公司 | The multiple electromechanical interlock mechanism of underground coal mine explosion-proof electrical appliance case |
| US9922779B2 (en) * | 2016-04-29 | 2018-03-20 | Eaton Corporation | Electrical enclosure, and switching assembly and transfer assembly therefor |
| CN207602431U (en) * | 2017-12-08 | 2018-07-10 | 西门子中压开关技术（无锡）有限公司 | Interlock, component and the switchgear of switchgear |
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| CN107808788A (en) | 2018-03-16 |
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