CN111180228A - Interlocking device - Google Patents
Interlocking device Download PDFInfo
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- CN111180228A CN111180228A CN202010039604.2A CN202010039604A CN111180228A CN 111180228 A CN111180228 A CN 111180228A CN 202010039604 A CN202010039604 A CN 202010039604A CN 111180228 A CN111180228 A CN 111180228A
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- Prior art keywords
- switching
- locking mechanism
- piece
- station
- circuit breaker
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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
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Abstract
The invention discloses an interlocking device, belongs to the technical field of circuit breaker switch cabinets, and solves the technical problem that potential safety hazards exist in the locking of a circuit breaker in the prior art. The circuit breaker switching-on device comprises a switching-on pressure plate, a first locking mechanism connected with a switching-on linkage piece and a second locking mechanism connected with a limiting pin contact piece, wherein one end of the switching-on pressure plate is connected with the disconnecting link through an elastic piece, the other end of the switching-on pressure plate is connected with the second locking mechanism, and when the circuit breaker is switched on, the switching-on linkage piece is driven to drive the first locking mechanism to drive the interlocking sliding plate to shield the operation hole; when the operation hole is opened and the three-station isolating switch performs switching-on, grounding or switching-off operation, the second locking mechanism is in contact with the limiting pin removing piece, and the limiting state of the circuit breaker is removed. The invention is used for perfecting the safety self-locking function of the circuit breaker and the three-position switch and meeting the requirement of people on the safety operation of the circuit breaker of the gas-filled tank.
Description
Technical Field
The invention belongs to the technical field of circuit breaker switch cabinets, and particularly relates to an interlocking device.
Background
Aerify the circuit breaker of cabinet and three station on-off mechanism and all set up outside the gas tank, the operation between the two needs to possess reliable mechanical interlocking function, for preventing dangerous condition and maloperation, aerify the cabinet and need take a series of interlocks to protect operation personnel and equipment safety itself. The anti-misoperation can be realized by the following devices: intelligent protection and control unit, intelligent control unit and the protective relay of separation, traditional relay circuit. The comprehensive protection and control unit realizes electrical interlocking according to detection and logical operation of the position states of the three-position switch and the circuit breaker, but the electrical interlocking can be realized only when the secondary auxiliary power supply is normal.
In the existing patent CN 209496753U, although the isolation interlocking device for the permanent magnet circuit breaker can realize isolation of closing and power-off misoperation, the device has a complicated operating mechanism and an undefined action mode, the operation of twisting cannot ensure that the isolating switch is accurately positioned at a closing position, a switching-off position or a grounding position, and the patent can only realize single-station control, so that there is a risk during the operation of the circuit breaker;
patent CN 202363344U provides an interlock for three-position isolator operating mechanism of gas-filled cabinet, and it is through can realizing the switching of electrical engineering and mechanical control, but has increased the complexity of system, and the operating part is concentrated, and the linkage link is too much, and the fault rate is higher. Meanwhile, the part only considers the locking of the operating stations of the three-station disconnecting switch, the interlocking with the circuit breaker cannot be realized, and the risk exists during the operation of the circuit breaker.
The mechanical interlocking setting that patent CN205264546U provided can realize the interlocking of electrode positive and negative rotation through setting up two locking mechanical system, however, this structure locking mode is too simple, and the system complexity is lower, and mainly used restricts electrode positive and negative rotation to be used for controlling the action of circuit breaker operating mechanism, only relate to the interlocking of single switch self promptly, there is the risk during the circuit breaker operation.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The application provides an interlock, solves the technical problem that there is the potential safety hazard in the locking of prior art circuit breaker. The technical scheme of the scheme has a plurality of technical effects, which are shown below.
The interlocking device is used for interlocking a circuit breaker and a three-position disconnecting switch, the circuit breaker comprises a limiting pin contact piece and a closing linkage piece, and the three-position disconnecting switch comprises an interlocking sliding plate, an operation hole and a disconnecting link; including play clamp plate, with the first locking mechanical system that combined floodgate linkage piece is connected and with second locking mechanical system is connected to the spacer pin contact piece, play clamp plate is located first locking mechanical system with second locking mechanical system top, first locking mechanical system with second locking mechanical system is adjacent to be set up, play clamp plate one end pass through the elastic component with the switch is connected, the other end with second locking mechanical system connects, wherein:
the first locking mechanism is respectively connected with the interlocking sliding plate and the closing linkage piece, and when the breaker is closed, the first locking mechanism drives the interlocking sliding plate to shield the operating hole through the closing linkage piece;
the second locking mechanism is connected with the limiting pin contact piece and the other end of the pressure-rising plate respectively, when the operation hole is opened, and the three-station isolating switch performs switching-on, grounding or switching-off operation, the knife switch drives the pressure-rising plate to rotate, when the three-station isolating switch is just positioned at a switching-on, grounding or switching-off station, the second locking mechanism is in contact with the limiting pin contact piece, and the limiting state of the circuit breaker is relieved.
In a preferred or alternative embodiment, the first locking mechanism comprises a first vertical rod and a first linkage, wherein:
one end of the first vertical rod is connected with the interlocking sliding plate, and the other end of the first vertical rod is connected with one end of the first connecting rod mechanism;
the other end of the first connecting rod mechanism is connected with the closing linkage piece, and when the breaker is closed, the closing linkage piece drives the first connecting rod mechanism to drive the first vertical rod to move in the vertical direction so as to drive the interlocking sliding plate to shield the operating hole.
In a preferred or alternative embodiment, the first link mechanism includes a first substrate, a first groove disposed on the first substrate, a first folding bar, and a first roller mounted on the first folding bar at intervals, the first roller being embedded in the first groove, wherein:
one end of the first folding rod is connected with the switching-on linkage piece, the other end of the first folding rod is connected with the first vertical rod, and when the breaker is switched on, the first folding rod is driven by the switching-on linkage piece to move in the vertical direction, so that the interlocking sliding plate can be driven to shield the operation hole.
In a preferred or alternative embodiment, the first substrate edge position is provided with first mounting holes for fixing at intervals.
In a preferred or alternative embodiment, the second locking mechanism comprises a second vertical rod and a second linkage, wherein:
one end of the second vertical rod is connected with the pressure lifting plate, and the other end of the second vertical rod is connected with one end of the second connecting rod mechanism;
the other end of the second link mechanism is connected with the limiting pin contact piece, when the operation hole is opened, and the three-station isolating switch is in a closing station, a grounding station and a switching-off station, the second link mechanism can be contacted with the limiting pin release piece, and the limiting of the breaker is released.
In a preferred or alternative embodiment, the second linkage mechanism includes a second base plate, a second groove provided on the second base plate, a second fold bar, and a second roller mounted on the second fold bar at a spacing, the second roller being embedded in the second groove, wherein:
one end of the second folding rod is connected with the limiting pin contact piece, and the other end of the second folding rod is connected with the second vertical rod; when the operation hole is opened, and the three-station isolating switch is in a switching-on station, a grounding station and a switching-off station, the knife switch drives the pressure lifting plate to rotate, so that the second vertical rod is in contact with the limiting pin releasing piece, and the limit of the breaker is released.
In a preferred or alternative embodiment, the second substrate is provided with second mounting holes at intervals at the edge position for fixing.
In a preferred or alternative embodiment, the elastic element is a compression spring, and two ends of the compression spring are respectively connected with the knife switch and the second locking mechanism.
In a preferred or alternative embodiment, the central region of the pressure plate is provided with a shaft hole, and a pressure plate shaft can be installed, so that the pressure plate rotates around the pressure plate shaft.
The technical beneficial effects of the present case:
the present case is through setting up first locking mechanical system and second locking mechanical system on aerifing the cabinet body, the action of closing a floodgate linkage piece when closing a floodgate through the circuit breaker for first locking mechanical system drives interlocking slide and covers the handle hole. When the three-station disconnecting switch needs to be operated, the pressing plate is driven to the second locking mechanism, so that the second locking mechanism is in contact with the limiting pin removing piece, and the limiting of the circuit breaker is removed. The pneumatic air-inflation cabinet has the advantages that the movement in different directions is realized through the first locking mechanism and the second locking mechanism, the pneumatic air-inflation cabinet is ingenious in design, simple in structure, safe and reliable, and extremely suitable for the air-inflation cabinet with the permanent magnet mechanism and the three-station isolating switch separated from each other far away, and the potential safety hazard caused by misoperation of personnel is avoided.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the interlock device of the present invention when a circuit breaker is closed;
FIG. 2 is a schematic structural view of the interlock device of the present invention during actuation of a three-position disconnecting switch;
FIG. 3 is a schematic view of the first linkage mechanism of the interlock device of the present invention;
FIG. 4 is a schematic diagram of a three-position disconnecting switch blade closing;
FIG. 5 is a schematic diagram of the switching-on operation of the three-position disconnecting switch;
FIG. 6 is a schematic diagram of the interlocking configuration of the gas-filled tank circuit breaker and the three-position switch;
fig. 7 is a schematic structural view of the first link mechanism and the second link mechanism of the interlock device of the present invention.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, in which like reference characters designate the same or similar elements throughout the different views unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Related explanation:
the three-position isolating switch is called 3PS for short, namely 3position switchgear. The three position load switch indicates that it has a closed position, an open position and a grounded position. The severing and the isolation are different. The cut-off only indicates that the circuit is disconnected and the load is cut off; isolation does not only include a disconnected state, but also indicates that the break between the source side and the load side is large.
The gas-insulated switchgear is characterized in that the gas-insulated switchgear is indoor alternating-current high-voltage gas-insulated metal-enclosed switchgear of DXG-12(C), a main switch can be a permanent magnet mechanism vacuum circuit breaker or a spring mechanism vacuum circuit breaker, the whole switchgear is combined with a sulfur hexafluoride gas compartment in an air-insulated mode, and the gas-insulated switchgear is compact and expandable and is suitable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, reliable interlocking and the like, and can provide satisfactory technical schemes for various application occasions and different user requirements. The adoption of sensing technology and the latest protective relay, together with advanced technical performance and a light and flexible assembly scheme, can completely meet different requirements of users. The inflatable cabinet is suitable for small-sized secondary substations, switching stations, box-type substations, residential districts, industrial and mining enterprises and large markets of power systems, and is particularly suitable for occasions with higher requirements on electricity consumption, such as airports, subways, railways and the like.
Referring to the interlocking device shown in fig. 1 and 2, the interlocking device is used for interlocking a circuit breaker and a three-position disconnecting switch, the circuit breaker comprises a limiting pin contact piece 21 and a closing linkage piece 20, the three-position disconnecting switch comprises an interlocking slide plate 4, an operation hole and a disconnecting link, the operation hole comprises a disconnecting operation hole 1, a grounding operation hole 2 and a closing operation hole 3, and the circuit breaker and the three-position disconnecting switch are all products in the prior art at the same horizontal position and are not described again.
The interlocking device comprises a starting pressing plate 16, a first locking mechanism connected with a closing linkage piece 20 and a second locking mechanism connected with a limiting pin contact piece 21, wherein the starting pressing plate 16 is positioned above the first locking mechanism and the second locking mechanism, and the first locking mechanism and the second locking mechanism are arranged adjacently, for example, are arranged in an inflatable cabinet in a vertical parallel mode. One end of the pressure-starting plate 16 is connected with the knife switch 300 through an elastic element, the elastic element, for example, comprises a switching-off pressure spring 12, a grounding pressure spring 13 and a switching-on pressure spring 14, and is located at the same horizontal position, and the switching-off pressure spring 12, the grounding pressure spring 13 and the switching-on pressure spring 14 are correspondingly connected with the switching-off operation hole 1, the grounding operation hole 2 and the switching-on operation hole 3. The other end of the lifting plate 16 is connected to a second locking mechanism. It should be noted that the switching principle of the three-position disconnecting switch is shown in fig. 4 and 5, when the knife switch 300 is switched to the switching operation hole 3, the knife switch 300 presses the hinge 400 installed below the switching operation hole 3 downward, so that the hinge 400 drives the switching compression spring 14 to press the right end of the pressing plate 16 downward. The switching-off and grounding principle of the three-station isolating switch is based on the switching-on working principle, and only when the switching-off pressure spring 12, the grounding pressure spring 13 and the switching-on pressure spring 14 simultaneously press the right end of the pressure plate 16, the pressure plate 16 is transmitted to the second locking mechanism and is in contact with the limiting pin contact piece 21, and the circuit breaker can act when the limiting is released. Wherein:
the two ends of the first locking mechanism are respectively connected with the interlocking sliding plate 4 and the closing linkage piece 20, when the breaker is closed, the first locking mechanism drives the interlocking sliding plate 4 to shield the operation hole through the closing linkage piece 20, and the action of the first locking mechanism is that the three-station isolating switch cannot be opened and is locked into closing, opening or grounding, so that the installation accident caused by manual misoperation is avoided;
the second locking mechanism is respectively connected with the other ends of the limiting pin contact piece 21 and the pressure-raising plate 16, when the operation hole is opened, and when the three-station isolating switch performs switching-on, grounding or switching-off operation, the knife switch 300 drives the pressure-raising plate 15 to rotate, the knife switch drives the elastic piece to press the pressure-raising plate 16 downwards so as to drive the pressure-raising plate 16 to rotate, the pressure-raising plate 16, for example, a central area is provided with a through hole, the pressure-raising plate shaft 15 can be installed, the pressure-raising plate shaft 15 is fixedly connected with the inner wall of the gas-filled cabinet, and the pressure-raising plate 16 can rotate around the pressure-raising plate shaft 15. When the three-station isolating switch is just at a closing, grounding or opening station, the second locking mechanism is contacted with the limiting pin removing piece 21, the limiting state of the breaker is removed, the second locking mechanism is contacted with the limiting pin removing piece, and the limiting of the breaker is removed.
As an alternative embodiment, the first locking mechanism comprises a first vertical rod 51 and a first linkage, wherein:
one end of the first vertical rod 51 is connected with the interlocking slide plate 4, and the other end is connected with one end of the first connecting rod mechanism; the other end of the first link mechanism is connected with the closing linkage piece 20, and when the circuit breaker is closed, the closing linkage piece 20 drives the first link mechanism, so that the first vertical rod 51 is driven to move in the vertical direction, the interlocking sliding plate 4 is driven to shield the operation hole, and the three-station disconnecting switch cannot be opened to be locked to be closed, opened or grounded.
Further, the first link mechanism includes a first substrate 521, a first groove 522 (not labeled in the figure) disposed on the first substrate 521, a first zigzag rod 523 and a first roller 524, the first roller 524 is installed on the first zigzag rod 523 at an interval, the first roller 524 is embedded in the first groove 522, one end of the first zigzag rod 523, which is close to the closing linkage piece 20, extends out of the first substrate 521 (such as an L-shaped substrate), leaving an extending end, and the extending end is in contact with the closing linkage piece 20, wherein:
one end and the combined floodgate linkage piece 20 of first bending pole 523 are connected, the other end is connected with first vertical pole 51, when the circuit breaker is combined floodgate, it shifts out (through the roll of gyro wheel 524 in recess 522) to drive first bending pole 523 level through combined floodgate linkage piece 20, first bending pole 523 drives first vertical pole 51 and moves in vertical direction, can drive the interlocking slide and shelter from the handle hole, promptly, shelter from separating brake handle hole 1, ground connection handle hole 2 and combined floodgate handle hole 3, thereby make three station isolator operations can't open and the locking be combined floodgate, separating brake or ground connection.
Further, in consideration of the replacement of the components, one end of the first folding rod 523, which is close to the closing linkage piece 20, may be connected to a first connecting rod 201 through the rotating pin 101, one end of the first connecting rod 201 is connected to the first folding rod 523, the other end of the first connecting rod is connected to the closing linkage piece 20, and the first connecting rod 201 is used to transmit the thrust of the closing linkage piece 20, so as to shield the operation hole by the interlocking slide plate 4.
As an alternative embodiment, the first substrate is provided with first mounting holes 525 at intervals at the edge position, and the first mounting holes 525 are used for mounting the first connecting rod mechanism, for example, on the inner wall of the gas-filled cabinet.
As an alternative embodiment, the second locking mechanism comprises a second vertical rod 61 and a second linkage, wherein:
one end of the second vertical rod 61 is connected with the pressure lifting plate 16, and the other end is connected with one end of the second connecting rod mechanism;
the other end of the second link mechanism is connected with the limiting pin contact piece 21, when the operation hole is opened and corresponding switching-on, grounding or switching-off operation of the three-station isolating switch is executed, the second link mechanism can be contacted with the limiting pin release piece 21, and the limiting of the breaker is released. For example, two ends of the opening pressure spring 12, the grounding pressure spring 13 and the closing pressure spring 14 are respectively connected with one end of the disconnecting link and one end of the lifting pressure plate 16, when the three-position isolating switch is closed, the opening pressure spring 12, the grounding pressure spring 13 or the closing pressure spring 14 is pressed down to force the right side of the lifting pressure plate 16 to descend (with the direction in the figure as a reference), the left side of the lifting pressure plate is lifted up, so that the second vertical rod 61 is driven to move upwards, the second vertical rod 61 moves upwards to drive the second link mechanism to act, the limiting pin is released from contact with the plate 21, and the circuit breaker is released from.
Furthermore, the central area of the pressure-raising plate 16 is provided with a shaft hole, and a pressure-raising plate shaft 15 can be installed, so that the pressure-raising plate 16 rotates around the pressure-raising plate shaft 15, and the pressure-raising plate shaft 15 is installed, for example, fixed on the inner wall of the gas-filled cabinet.
As an alternative embodiment, the second link mechanism includes a second substrate 621, a second recess 622 disposed on the second substrate, a second folding bar 623, and a second roller 624, the second roller 624 is mounted on the second folding bar 623 at a spacing, and the second roller 624 is embedded in the second recess 622 (not labeled in the figure), wherein:
one end of the second folding rod 623 is connected with the limit pin contact piece 21, and the other end is connected with the second vertical rod 61; when the operation hole is opened, and corresponding switching-on, grounding or switching-off operations of the three-station isolating switch are performed, the switch-on of the knife switch drives the elastic part to act, the right side of the pressing plate 16 is pressed down by the switch pressure spring 12, the grounding pressure spring 13 or the switching-on pressure spring 14 to descend, the left side of the pressing plate ascends, and the left side of the pressing plate ascends to drive the second vertical rod 61 to move upwards, so that the second roller 624 rolls in the second groove 622 to drive the second folded rod 623 to move horizontally, when the three-station isolating switch is just at the switching-on, grounding or switching-off positions, the second folded rod 623 is in contact with the breaker limiting pin removing piece 21, the breaker is free of limiting and can act, and the.
Further, in consideration of the replacement of the components, the end of the second lever 623 adjacent to the stopper pin contact piece 21 may be connected to a second connecting rod 202 via the rotating pin 102, and the second connecting rod 202 has one end connected to the second lever 623 and the other end connected to the stopper pin contact piece 21.
Furthermore, second mounting holes 625 for fixing are arranged at intervals at the edge position of the second substrate 62, and the second mounting holes 625 correspond to the first mounting holes 525 in position, so that the second substrate 62 and the first substrate 52 are mounted on the inner wall of the gas-filled cabinet in a manner of being parallel to each other and having a distance, for example, through mounting of bolts, one end of each bolt sequentially penetrates through the second substrate 62 and the first substrate 52 and is connected with the inner wall of the gas-filled cabinet.
The present case is used in aerifing the cabinet, the circuit breaker and the three-station on-off mechanism of aerifing the cabinet all set up outside the gas tank, as shown in fig. 4, operation between the two needs to possess reliable mechanical interlocking function, the circuit breaker is in the closing position, the three-station on-off operation is not allowed, the circuit breaker is when closing a floodgate, the linkage piece that closes a floodgate drives first vertical pole 51 and rises perpendicularly, make interlocking slide 4 shelter from three-station isolator handle holes, thereby make the operation of three-station isolator can't open and the locking be closing a floodgate, separating brake or ground connection, the money of avoiding the maloperation appears.
Only when the three-position switch is at the closing, opening and grounding positions, the vacuum circuit breaker can be operated, and one end of the lifting plate 16 drives the first vertical rod 51 to move upwards, so that the first connecting rod 201 moves horizontally. When the three-position disconnecting switch is just at a closing position, a grounding position or an opening position, the first connecting rod 201 is contacted with the breaker limiting pin removing piece 21, and the breaker can be moved when the limiting is removed.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (9)
1. An interlocking device is used for interlocking a circuit breaker and a three-position disconnecting switch, the circuit breaker comprises a limiting pin contact piece and a closing linkage piece, and the three-position disconnecting switch comprises an interlocking sliding plate, an operation hole and a disconnecting link; the device is characterized by comprising a pressure plate, a first locking mechanism connected with a switch-on linkage piece and a second locking mechanism connected with a limiting pin contact piece, wherein the pressure plate is positioned above the first locking mechanism and the second locking mechanism, the first locking mechanism and the second locking mechanism are arranged adjacently, one end of the pressure plate is connected with the knife switch through an elastic piece, and the other end of the pressure plate is connected with the second locking mechanism, wherein:
the first locking mechanism is respectively connected with the interlocking sliding plate and the closing linkage piece, and when the breaker is closed, the closing linkage piece enables the first locking mechanism to drive the interlocking sliding plate to shield the operating hole;
the second locking mechanism is connected with the limiting pin contact piece and the other end of the pressure-rising plate respectively, when the operation hole is opened, and the three-station isolating switch performs switching-on, grounding or switching-off operation, the knife switch drives the pressure-rising plate to rotate, when the three-station isolating switch is just positioned at a switching-on, grounding or switching-off station, the second locking mechanism is in contact with the limiting pin contact piece, and the limiting state of the circuit breaker is relieved.
2. The interlock of claim 1 wherein said first locking mechanism comprises a first vertical rod and a first linkage, wherein:
one end of the first vertical rod is connected with the interlocking sliding plate, and the other end of the first vertical rod is connected with one end of the first connecting rod mechanism;
the other end of the first connecting rod mechanism is connected with the closing linkage piece, and when the breaker is closed, the closing linkage piece drives the first connecting rod mechanism to drive the first vertical rod to move in the vertical direction so as to drive the interlocking sliding plate to shield the operating hole.
3. The interlock of claim 2 wherein said first linkage comprises a first base plate, a first recess formed in said first base plate, a first accordion bar, and a first roller mounted on said first accordion bar at spaced intervals, said first roller being embedded in said first recess, wherein:
one end of the first folding rod is connected with the switching-on linkage piece, the other end of the first folding rod is connected with the first vertical rod, and when the breaker is switched on, the first folding rod is driven by the switching-on linkage piece to move in the vertical direction, so that the interlocking sliding plate can be driven to shield the operation hole.
4. The interlock device of claim 3, wherein said first substrate edge is spaced apart to define first mounting holes for securing.
5. The interlock of claim 1 wherein said second locking mechanism comprises a second vertical rod and a second linkage, wherein:
one end of the second vertical rod is connected with the pressure lifting plate, and the other end of the second vertical rod is connected with one end of the second connecting rod mechanism;
the other end of the second link mechanism is connected with the limiting pin contact piece, when the operation hole is opened, and the three-station isolating switch is in a closing station, a grounding station and a switching-off station, the second link mechanism can be contacted with the limiting pin release piece, and the limiting of the breaker is released.
6. The interlock device of claim 5 wherein the second linkage comprises a second base plate, a second recess formed in the second base plate, a second corrugated bar, and a second roller mounted at a spaced location on the second corrugated bar, the second roller being embedded in the second recess, wherein:
one end of the second folding rod is connected with the limiting pin contact piece, and the other end of the second folding rod is connected with the second vertical rod; when the operation hole is opened, and the three-station isolating switch is in a switching-on station, a grounding station and a switching-off station, the knife switch drives the pressure lifting plate to rotate, so that the second vertical rod is in contact with the limiting pin releasing piece, and the limit of the breaker is released.
7. The interlock device of claim 6 wherein said second substrate edge is spaced apart to define second mounting holes for securing said second substrate edge.
8. The interlock device of claim 1 wherein said resilient member is a compression spring, and both ends of said compression spring are connected to said knife switch and said second locking mechanism, respectively.
9. The interlock of claim 8 wherein said lift tab central region is provided with an axial hole for receiving a lift tab shaft for rotation of said lift tab about said lift tab shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039604.2A CN111180228B (en) | 2020-01-15 | 2020-01-15 | Interlocking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039604.2A CN111180228B (en) | 2020-01-15 | 2020-01-15 | Interlocking device |
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| CN111180228A true CN111180228A (en) | 2020-05-19 |
| CN111180228B CN111180228B (en) | 2021-10-08 |
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| CN104036991A (en) * | 2013-12-07 | 2014-09-10 | 国家电网公司 | Three-working-position isolation switch operation device with anti-misoperation function |
| CN205248218U (en) * | 2015-11-17 | 2016-05-18 | 江苏省如高高压电器有限公司 | Circuit breaker operating device's combined floodgate interlock |
| CN205753130U (en) * | 2016-07-15 | 2016-11-30 | 国网山东省电力公司金乡县供电公司 | A kind of Novel switch cabinet operating handle device |
| CN106169391A (en) * | 2016-08-31 | 2016-11-30 | 中国西电电气股份有限公司 | A kind of chopper and the mechanical interlock mechanism of tri-station isolating switch |
| CN107140187A (en) * | 2017-06-28 | 2017-09-08 | 成都鑫晨航空科技有限公司 | A kind of Combined roll |
| CN108320946A (en) * | 2018-01-09 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of switchgear and its disconnecting switch and breaker interlock |
| CN209515542U (en) * | 2018-12-29 | 2019-10-18 | 甘肃长城电工电器工程研究院有限公司 | A kind of tri-station isolating switch interlock |
| CN209821246U (en) * | 2019-02-27 | 2019-12-20 | 泰州赛星电子有限公司 | Tool for disassembling terminal |
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| CN111180228B (en) | 2021-10-08 |
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