CN115831640A

CN115831640A - Interlocking device of upper isolation lower circuit breaker

Info

Publication number: CN115831640A
Application number: CN202211531211.9A
Authority: CN
Inventors: 虞儒敏; 徐志慧; 叶舒敏; 陈贤会; 陈宇强; 张舒娴
Original assignee: ZHEJIANG HUAYI ELECTRIC APPLIANCE TECHNOLOGY CO LTD
Current assignee: ZHEJIANG HUAYI ELECTRIC APPLIANCE TECHNOLOGY CO LTD
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-03-21

Abstract

The invention provides an interlocking device of an upper isolation lower circuit breaker, which comprises an isolation mechanism, a circuit breaker and an interlocking mechanism, wherein the interlocking mechanism comprises: the first interlocking piece is arranged on an isolation panel of the isolation mechanism in a sliding mode and used for interlocking the grounding operation and the closing operation of the isolation mechanism; the second interlocking piece is in up-and-down linkage fit with the first interlocking piece and is used for forbidding or allowing the closing operation of the circuit breaker; a third interlock member including an isolation operation barrier movable to open or block the isolation operation structure; one end of the fourth interlocking piece is in up-and-down linkage fit with the first interlocking piece, and the other end of the fourth interlocking piece is provided with a first door lock inserting tongue component which is suitable for being in inserting fit with the cabinet door; one end of the fifth interlocking piece is provided with a second door lock bolt assembly which is suitable for elastically and telescopically abutting against the cabinet door. The invention can prevent the misoperation of an error on-off circuit breaker, a loaded on-off isolating switch and the like in the electrical operation.

Description

Interlocking device of upper isolation lower circuit breaker

Technical Field

The invention relates to the technical field of electrical equipment, in particular to an interlocking device of an upper isolation lower circuit breaker.

Background

A box type fixed alternating current metal enclosed switchgear (XGN) is used as a new generation of miniaturized modular switchgear, and main switches such as a three-position switch and a circuit breaker form all functional units and a sealed air box. In order to meet the requirements of miniaturization, high reliability, intellectualization, maintenance-free performance and the like, the switch adopts the structural layout of an upper isolation lower circuit breaker, wherein the isolation device adopts a direct-acting three-station isolation switch structure.

In the circuit breaker looped netowrk cabinet under current last isolation, the structural configuration of adoption is that the upside sets up three station switches, and the downside sets up the circuit breaker, and in circuit breaker looped netowrk cabinet under last isolation, the operation order of power transmission does: closing a door, opening a breaker, opening a grounding switch, closing an isolating switch and closing a breaker; the operation sequence of the power failure is as follows: the circuit breaker is opened, the isolating switch is opened, the grounding switch is closed and the circuit breaker is closed.

The existing interlocking mechanism of the upper isolation lower circuit breaker ring main unit is incomplete, so that invalid operation or repeated operation is often caused by misoperation, and danger can be caused seriously. For example, the misoperation that may occur at the time of power transmission operation is: before closing the disconnector, the circuit breaker is closed, so that the circuit breaker cannot be closed to finish power transmission by closing the disconnector, and the circuit breaker needs to be opened and then closed, so that repeated operation on the disconnector and the circuit breaker is caused. As another example, there are the following possible malfunctions during the power-off operation: the circuit breaker is switched on before the grounding switch is switched on, and repeated operation can be caused; after the cabinet door of the cable chamber is opened, the breaker is opened due to misoperation, so that an operator is in danger of electric shock.

Accordingly, the present invention is directed to providing a reliable mechanical interlock to effectively prevent malfunction and repetitive operation.

Disclosure of Invention

Therefore, the present invention is directed to provide an interlock apparatus for upper and lower disconnecting switches, which can effectively prevent an erroneous operation and a repetitive operation.

The invention provides an interlocking device of an upper isolation lower circuit breaker, which comprises an isolation mechanism, a circuit breaker and an interlocking mechanism arranged between the isolation mechanism and the circuit breaker in a transmission way, wherein the interlocking mechanism comprises:

the first interlocking piece is arranged on an isolation panel of the isolation mechanism in a sliding mode, an isolation operation structure which can be used for grounding and/or closing operation is arranged on the isolation panel, the first interlocking piece comprises an isolation operation interlocking structure, and the isolation operation interlocking structure is suitable for being matched with the isolation operation structure in the moving process of the first interlocking piece so as to realize interlocking of the grounding operation and the closing operation of the isolation mechanism;

a second interlocking member, one end of which is in up-and-down interlocking fit with the first interlocking member, and the other end of which is suitable for locking or releasing a circuit breaking and closing operation unit of the circuit breaker in the process of moving the first interlocking member up and down so as to forbid or allow the closing operation of the circuit breaker;

the third interlocking part comprises an isolation operation baffle arranged between the isolation panel and the first interlocking part and a second telescopic rod arranged between the isolation operation baffle and the circuit breaker, and the second telescopic rod is in linkage fit with the circuit breaker, is suitable for moving up and down along with the circuit breaker when the circuit breaker performs switching-on operation and switching-off operation, and drives the isolation operation baffle to move so as to open or shield the isolation operation structure;

one end of the fourth interlocking piece is in up-and-down linkage fit with the first interlocking piece, and the other end of the fourth interlocking piece is provided with a first door lock inserting tongue component which is suitable for being in inserting fit with the cabinet door, wherein the first door lock inserting tongue component has a locking state of extending out of the locked cabinet door under a normal state and an unlocking state of retracting when the isolating mechanism is grounded and the circuit breaker performs closing operation;

one end of the fifth interlocking piece is provided with a second door locking and inserting tongue component which is suitable for elastically abutting against the cabinet door in a telescopic mode, and the other end of the fifth interlocking piece is suitable for locking or releasing a circuit breaking and opening operation unit of the circuit breaker in the telescopic moving process of the second door locking and inserting tongue component so as to forbid or allow the opening operation of the circuit breaker.

Furthermore, the isolation operation structure comprises an isolation switch-on operation hole and an isolation grounding operation hole which are arranged on the isolation panel at intervals up and down and in a staggered manner;

the first interlocking piece is limited on the isolation panel in a horizontal sliding mode and is matched and linked with a three-station state of the isolation mechanism, the first interlocking piece can be matched with the isolation operation structure through the isolation operation interlocking structure in the horizontal sliding process to realize interlocking of grounding operation and closing operation of the isolation mechanism, the first interlocking piece is provided with three working positions, and the first position is located between the second position and the third position;

when the isolation mechanism is in a middle state, the first interlocking piece moves to a first position where the isolation operation interlocking structure opens an isolation switch-on operation hole and an isolation grounding operation hole respectively;

when the isolation mechanism is in a closing state, the first interlocking piece moves to a second position where the isolation operation interlocking structure opens an isolation closing operation hole and shields an isolation grounding operation hole;

when the isolation mechanism is in a grounding state, the first interlocking piece moves to a third position where the isolation operation interlocking structure shields the switching-off operation hole and opens the isolation grounding operation hole.

Furthermore, the isolation operation interlocking structure comprises an interlocking plate body arranged opposite to the isolation panel, and an isolation switch-on operation avoiding groove and an isolation grounding operation avoiding groove which are arranged on the interlocking plate body corresponding to the isolation switch-on operation hole and the isolation grounding operation hole, wherein the interlocking plate body can transversely move between a first position and a second position and between the first position and a third position along the isolation panel;

when the first interlocking piece is located at a first position, the isolation closing operation avoiding groove and the isolation closing operation hole are correspondingly superposed to open the isolation closing operation hole, and the isolation grounding operation avoiding groove and the isolation grounding operation hole are correspondingly superposed to open the isolation grounding operation hole;

when the first interlocking piece is located at the second position, the isolation switch-on operation avoiding groove and the isolation switch-on operation hole are correspondingly superposed to open the isolation switch-on operation hole, and the isolation grounding operation avoiding groove and the isolation grounding operation hole are staggered to shield the isolation grounding operation hole;

when the first interlocking piece is located at the third position, the isolation switch-on operation avoiding groove and the isolation switch-on operation hole are staggered to shield the isolation switch-on operation hole, and the isolation grounding operation avoiding groove and the isolation grounding operation hole are correspondingly superposed to open the isolation grounding operation hole.

Furthermore, the projection of the isolation switch-on operation hole on the interlocking plate body can fall into the isolation switch-on operation avoiding groove; and/or the presence of a gas in the gas,

the projection of the isolation grounding operation hole on the interlocking plate body can fall into the isolation grounding operation avoidance groove.

Optionally, the isolation switch-on operation hole and the isolation grounding operation hole are both round holes;

the isolation closing operation avoiding groove and the isolation grounding operation avoiding groove are transversely extending waist-shaped holes.

Optionally, the first interlocking member further comprises:

the board is guided to buckle, and fixed the setting is in on the bottom border of interlocking plate body, the board is guided to buckle follows the length direction of interlocking plate body extends the setting, the board is guided to buckle has two at least kinks, second interlock spare and fourth interlock spare's one end respectively the butt be in on two kinks of the board is guided to buckle, second interlock spare and fourth interlock spare are suitable for during interlocking plate body lateral shifting the up-and-down motion under the guide of the kink of the board is guided to buckle.

Further, the circuit breaker includes:

the breaker panel is provided with the circuit breaking and closing operation unit and the circuit breaking and opening operation unit;

the circuit breaker connecting lever is rotatably arranged on a circuit breaker panel, the circuit breaker connecting lever is in transmission connection with the circuit breaking and closing operation unit and the circuit breaking and opening operation unit through a first transmission mechanism respectively, and the circuit breaker connecting lever is suitable for forward rotation when the circuit breaking and closing operation unit generates triggering operation and reverse rotation when the circuit breaking and opening operation unit generates triggering operation;

when the breaker crank arm rotates forwards or backwards, the breaker crank arm can drive the second telescopic rod to move downwards or upwards so as to drive the isolation operation baffle to move to shield or open the isolation operation structure.

Optionally, the second interlock comprises:

the first telescopic rod is arranged on the circuit breaker panel in a longitudinally telescopic mode, and the upper end of the first telescopic rod is in sliding fit with the top wall of the bending guide plate;

and the circuit breaking and closing stop part is fixedly connected to the lower end of the first telescopic rod, the first telescopic rod is suitable for up-and-down telescopic motion under the driving of the bending guide plate, and the circuit breaking and closing operation unit can be locked or released by driving the circuit breaking and closing stop part to move.

Optionally, the circuit breaking and closing operation unit includes:

the circuit breaking and closing button is suitable for realizing the closing operation of the circuit breaker through pressing operation, and a closing stopping matching piece suitable for being in limit matching with the circuit breaking and closing stopping piece is fixedly arranged on an operating shaft of the circuit breaking and closing button;

in the process that the first telescopic rod drives the disconnection and closing stop piece to move up and down, the disconnection and closing stop piece can be matched with or separated from the closing stop matching piece in a butting mode, and therefore the disconnection and closing button is limited or allowed to move in the pressing direction.

Optionally, the second telescopic rod is telescopically arranged on the breaker panel along the longitudinal direction, and the second telescopic rod is subjected to a biasing force tending to move downwards; the third locking member further comprises:

the first linkage matching part is arranged on the second telescopic rod, the bottom wall of the first linkage matching part can be matched with the circuit breaker connecting lever in a propping manner, the first linkage matching part is suitable for moving upwards under the driving of the reverse rotation of the circuit breaker connecting lever and realizes that the isolation operation baffle plate opens the isolation operation structure by driving the isolation operation baffle plate to move upwards; the circuit breaker connecting lever can release when forward rotating to the fender of first linkage cooperation portion diapire, keep apart the operation baffle and can reset the motion downwards under the drive of second telescopic link in order to shelter from isolation operation structure.

Optionally, an elastic resetting piece is arranged on the second telescopic rod, and the elastic resetting piece is suitable for applying a biasing force tending to move downwards to the second telescopic rod; and/or the presence of a gas in the gas,

first linkage cooperation portion is a buckling plate, first linkage cooperation portion one end and isolation operation baffle erection joint, the other end to being close to the direction of circuit breaker connecting lever extends for with the cooperation of circuit breaker connecting lever, the upper end fixed mounting of second telescopic link is close to the middle part position in first linkage cooperation portion.

Optionally, the isolation operation baffle comprises an isolation closing operation shielding part and an isolation grounding operation shielding part which are distributed at intervals up and down, the isolation closing operation shielding part can be correspondingly overlapped with the isolation closing operation hole to shield the isolation closing operation hole, and the isolation grounding operation shielding part can be correspondingly overlapped with the isolation grounding operation hole to shield the isolation grounding operation hole;

and an avoidance slotted hole is formed in the isolation operation baffle and is suitable for being correspondingly superposed with the isolation switch-on operation hole or the isolation grounding operation hole when the isolation operation baffle moves up and down so as to open the isolation switch-on operation hole and the isolation grounding operation hole.

Optionally, the fourth interlocking piece is provided with a second interlocking part which is suitable for being in interlocking fit with the circuit breaker when the isolating mechanism is in a grounding state, and the second interlocking part can be driven by the fourth interlocking piece to move downwards or upwards to enter or leave the action path of the circuit breaker crank arm;

when the second linkage matching part moves downwards and enters the action path of the breaker crank arm, the breaker crank arm can press the second linkage matching part downwards when rotating in the forward direction so as to drive the fourth linkage part to continuously move downwards to trigger the first door lock insertion tongue assembly to enter a retracted unlocking state.

Optionally, the fourth interlock comprises:

the third telescopic rod is arranged on the circuit breaker panel in a telescopic mode along the longitudinal direction and is subjected to biasing force tending to move upwards, the upper end of the third telescopic rod abuts against the bottom wall of the bending guide plate, and the lower end of the third telescopic rod is movably connected with the first door lock inserting tongue assembly;

the second linkage matching part is fixedly installed on the third telescopic rod, the third telescopic rod is suitable for moving downwards under the guiding effect of the bending guide plate when the first interlocking piece moves transversely so as to drive the second linkage matching part to enter the acting path of the connecting lever of the circuit breaker, and the second linkage matching part moves upwards to drive the second linkage matching part to break away from the acting path of the connecting lever of the circuit breaker when the second linkage matching part is suitable for resetting.

Optionally, the fifth interlock comprises:

the fourth telescopic rod is arranged on the breaker panel in a longitudinally telescopic manner, is subjected to a biasing force tending to move upwards, and is movably connected with the second door lock-latch assembly at the lower end;

the circuit breaking and switching-off stop piece is fixedly connected to the upper end of the fourth telescopic rod and used for locking or releasing the circuit breaking and switching-on operation unit;

the second door lock bolt assembly is suitable for driving the fourth telescopic rod to move downwards when the cabinet door is opened, and driving the breaking and opening stop piece to move downwards to a locking position of the breaking and opening operation unit; the second door lock bolt assembly is suitable for upwards resetting and moving to an unlocking position of the open circuit and open brake operation unit on the fourth telescopic rod.

Optionally, the open-circuit and open-circuit operation unit includes:

the circuit breaker is characterized by comprising a circuit breaker opening button, a circuit breaker opening stop fitting piece and a circuit breaker opening stop fitting piece, wherein the circuit breaker opening button is suitable for realizing the opening operation of the circuit breaker through pressing operation, and an opening stop fitting piece suitable for being in limit fit with the circuit breaker opening stop piece is fixedly arranged on an operating shaft of the circuit breaker opening button;

and in the process that the fourth telescopic rod drives the disconnecting and opening stop piece to move up and down, the disconnecting and opening stop piece can be matched with or separated from the disconnecting and opening stop matching piece in a butting mode so as to limit or allow the disconnecting and opening button to move along the pressing direction.

The technical scheme of the invention has the following advantages:

in the embodiment of the invention, the isolation mechanism has three station states of closing, opening or grounding, the following five states can be obtained by respectively carrying out corresponding operations on the isolation mechanism and the circuit breaker, and five groups of interlocking pieces can carry out corresponding interlocking in each state:

the first state, the isolation mechanism and the breaker are in an open state:

(1) interlocking in this state: the second interlocking member moves to a circuit breaking and closing operation unit for locking the circuit breaker to prohibit the closing operation of the circuit breaker; the fourth interlock piece moves to make first lock bolt subassembly and cabinet door grafting cooperation to lock the cable chamber cabinet door, can not open the cabinet door this moment.

(2) Operations that can be performed in this state: the isolation operation structure on the isolation panel can be used for switching on the isolation mechanism, and the following state II can be achieved; alternatively, the isolation mechanism may be grounded, and the following state four may be entered.

State two, isolation mechanism combined floodgate, circuit breaker separating brake state:

(1) interlocking in this state: the isolation operation interlocking structure is matched with the isolation operation structure under the driving of the movement of the first interlocking piece so as to lock and prohibit the grounding operation of the isolation mechanism; the second interlock moves to a breaking and closing operation unit that releases the circuit breaker to allow a closing operation of the circuit breaker; the fourth interlock spare makes first lock bolt assembly keep on the position with cabinet door grafting complex to lock the cable chamber cabinet door, can not open the cabinet door this moment.

(2) Operations that can be performed in this state: the circuit breaking and closing operation unit is operated to carry out closing operation on the circuit breaker, and the following state III can be entered for power transmission; or, the isolation operation structure on the isolation panel can be used to perform the opening operation on the isolation mechanism, so as to enter the first state.

And a third state, an isolation mechanism and a breaker are all switched on:

(1) interlocking in this state: the isolation operation baffle of the third interlocking piece is driven by the second telescopic rod to move to the position for shielding the isolation operation structure, so that the isolation operation structure is forbidden to be operated.

(2) Operations that can be performed in this state: and operating the breaking and opening operation unit to perform opening operation on the breaker, so that the breaker can enter the second state.

State four, isolation mechanism ground connection, circuit breaker open brake state:

(1) interlocking in this state: under the moving drive of the first interlocking piece, the isolation operation interlocking structure is matched with the isolation operation structure to lock and forbid the closing operation of the isolation mechanism; the second interlock moves to a breaking and closing operation unit that releases the circuit breaker to allow a closing operation of the circuit breaker; the fourth interlock spare makes first lock bolt assembly keep on the position with cabinet door grafting complex to lock the cable chamber cabinet door, can not open the cabinet door this moment.

(2) Operations that can be performed in this state: operating the breaking and closing operation unit to perform closing operation on the breaker, so that the breaker can enter the following state V to be effectively grounded; or, the isolation operation structure on the isolation panel can be used to perform the opening operation on the isolation mechanism, so as to enter the first state.

State five, isolation mechanism ground connection, circuit breaker combined floodgate state:

(1) interlocking in this state: the isolation operation baffle of the third interlocking piece is driven by the second telescopic rod to move to a position for shielding the isolation operation structure so as to forbid the operation on the isolation operation structure; the fourth interlocking piece drives the first door lock insertion tongue assembly to retract so as to unlock the cabinet door, and the cabinet door can be opened at the moment. Under this state, the cable chamber cabinet body is in effective ground connection state to effectively discharge to the cubical switchboard, prevent that the indoor response of cable and remaining high-tension electricity from causing personnel to electrocute, thereby guarantee operating personnel's safety.

If the cabinet door is further opened, the second door lock bolt assembly which is telescopically and elastically abutted against the cabinet door extends out due to no longer being limited by the cabinet door, and drives the fifth interlocking piece to move to the open-circuit and open-circuit operation unit for locking the circuit breaker so as to prohibit the open-circuit operation of the circuit breaker and avoid electric shock hazard to an operator due to open-circuit misoperation on the circuit breaker when the isolation mechanism is in a grounding state; until the cabinet door is closed, the second inserting tongue 622 assembly retracts under the limit of the cabinet door, and drives the fifth interlocking member to move to release the open-circuit and open-circuit operation unit of the circuit breaker, so as to allow the open-circuit operation of the circuit breaker.

(2) Operations that can be performed in this state: opening the cabinet door to perform maintenance and other operations; or, the fourth state can be entered by operating the breaking and opening operation unit to open the breaker.

According to the invention, five groups of interlocking pieces are arranged among the isolation mechanism, the circuit breaker and the cable chamber cabinet door, so that the cable chamber cabinet door can be interlocked in the five states, namely five-prevention interlocking, and the misoperation of mistakenly switching on/off the circuit breaker, the on-load switching on/off isolation switch, the electrified grounding wire, the grounding switch, the grounding wire-connected switch, the mistakenly switched-in electrified interval and the like in the electrical operation can be prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of an interlock apparatus of an upper disconnecting lower circuit breaker according to the present invention;

fig. 2 is a schematic structural view of the interlock apparatus of the upper disconnecting lower circuit breaker of fig. 1 with the second transmission mechanism and the first transmission mechanism removed;

fig. 3 is a front view of the interlock device of the upper disconnect lower circuit breaker of fig. 2 with the second drive mechanism and the first drive mechanism removed;

fig. 4 is a rear view of the interlock device of the upper disconnect lower circuit breaker of fig. 2;

fig. 5 is a schematic structural view of an isolation panel, an isolation operation barrier and a first interlocking member according to the present invention;

fig. 6 is a schematic view of a portion of an interlock mechanism located on the rear side of a circuit breaker panel from one perspective;

fig. 7 is a schematic view of a portion of the interlock mechanism of fig. 6 at a rear side of the circuit breaker panel from another perspective;

FIG. 8 is a schematic view of the first door latch bolt assembly and the first door latch bolt assembly mounting structure;

fig. 9 is a schematic structural diagram of a cable chamber cabinet door.

Description of reference numerals:

100. an isolation mechanism; 101. an insulation panel; 102. isolating the operating structure; 1021. isolating a closing operation hole; 1022. isolating the grounding operation hole; 103. a second transmission mechanism; 1031. a transmission rod; 104. an isolation status indication window;

201. a circuit breaker panel; 202. a breaker crank arm; 211. a breaking and closing operation unit; 2111. a circuit breaking and closing button; 2112. a closing stop mating member; 212. a breaking and opening operation unit; 2121. a circuit breaking and brake separating button; 2122. a brake separating stop fitting piece; 203. a first transmission mechanism; 204. a guide mounting plate; 205. a circuit breaker status indication window; 206. a manual energy storage operation hole;

300. a cabinet door; 301. a lock hole; 400. a cable chamber cover plate;

1. a first interlocking member; 11. an isolation operation interlock arrangement; 111. interlocking panels; 1111. isolating the closing operation avoiding groove; 1112. isolating the grounding operation avoiding groove; 12. bending the guide plate;

2. a second interlock member; 21. a first telescopic rod; 22. a circuit breaking and closing stop member;

3. a third interlock member; 31. isolating the operating baffle; 311. an isolation closing operation shielding part; 312. an isolated ground operation shield; 32. a second telescopic rod; 33. a first linkage mating portion;

4. a fourth interlock; 41. a second linkage fitting portion; 42. a third telescopic rod;

5. a fifth interlocking member; 51. a fourth telescopic rod; 52. an open circuit and open circuit stop;

61. a first door lock bolt assembly; 611. a first linkage rod; 612. a first tongue; 62. a second door latch bolt assembly; 621. a second linkage rod; 622. a second tongue.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

As shown in fig. 1 to 9, an interlock apparatus of an upper isolation lower circuit breaker according to an embodiment of the present invention includes an isolation mechanism 100 and a circuit breaker arranged in an up-and-down distribution, and an interlock mechanism drivingly disposed between the isolation mechanism 100 and the circuit breaker, the interlock mechanism including a first interlock 1, a second interlock 2, a third interlock 3, a fourth interlock 4, and a fifth interlock 5. Specifically, a first interlocking part 1 is slidably arranged on an isolation panel 101 of the isolation mechanism 100, an isolation operation structure 102 for grounding and closing operations is arranged on the isolation panel 101, the first interlocking part 1 includes an isolation operation interlocking structure 11, and the isolation operation interlocking structure 11 is adapted to cooperate with the isolation operation structure 102 in a moving process of the first interlocking part 1 to realize interlocking of the grounding operation and the closing operation of the isolation mechanism 100; one end of the second interlocking member 2 is in up-and-down interlocking fit with the first interlocking member 1, and the other end is suitable for locking or releasing a circuit breaking and closing operation unit 211 of the circuit breaker in the process that the first interlocking member 1 moves up and down so as to forbid or allow the closing operation of the circuit breaker; the third interlocking member 3 comprises an isolation operation baffle 31 arranged between the isolation panel 101 and the first interlocking member 1, and a second telescopic rod 32 arranged between the isolation operation baffle 31 and the circuit breaker, wherein the second telescopic rod 32 is in linkage fit with the circuit breaker, is suitable for moving up and down along with the circuit breaker when the circuit breaker performs switching-on operation and switching-off operation, and drives the isolation operation baffle 31 to move so as to open or shield the isolation operation structure 102; one end of the fourth interlocking member 4 is in up-and-down linkage fit with the first interlocking member 1, and the other end is provided with a first door lock inserting tongue component 61 suitable for being in inserting fit with the cabinet door 300, wherein the first door lock inserting tongue component 61 has a locking state of extending out of the locking cabinet door 300 under a normal state and an unlocking state of retracting when the isolating mechanism 100 is grounded and the circuit breaker performs closing operation; the fifth interlocking member 5 has one end provided with a second door latch assembly 62 adapted to be elastically and telescopically stopped against the cabinet door 300, and the other end adapted to lock or release the breaking and opening operation unit 212 of the circuit breaker during the telescopic movement of the second door latch assembly 62, so as to prohibit or allow the opening operation of the circuit breaker.

The basic interlocking logic of the interlocking device for the upper isolation lower circuit breaker in the implementation is as follows: (1) when the isolating switch is switched off, the breaker is forbidden to be switched on; (2) when the breaker is switched on, the isolating switch is forbidden to operate; (3) the disconnecting switch is interlocked during switching-on and grounding operations, namely the disconnecting switch is forbidden to be grounded after the disconnecting switch is switched on, and the disconnecting switch is forbidden to be switched on after the disconnecting switch is grounded; (4) when the isolating switch is grounded and the breaker is switched on, the cabinet door of the cable chamber can be opened; (5) and after the cable chamber cabinet door is opened, the breaker forbids opening.

In this embodiment, the isolation mechanism 100 has three station states of closing, opening or grounding, and the following five states can be obtained by respectively performing corresponding operations on the isolation mechanism 100 and the circuit breaker, and five sets of interlocking pieces can perform corresponding interlocking in each state:

state one, isolation mechanism 100, and circuit breaker sharing brake state, as shown in fig. 2:

(1) interlocking in this state: the second interlock 2 moves to the breaking and closing operation unit 211 that locks the circuit breaker to prohibit the closing operation of the circuit breaker; the fourth interlocking member 4 moves to make the first door lock tongue assembly 61 and the cabinet door 300 in an inserting fit to lock the cable chamber cabinet door 300, and at this time, the cabinet door 300 cannot be opened.

(2) Operations that can be performed in this state: the isolation operation structure 102 on the isolation panel 101 can be used to perform closing operation on the isolation mechanism 100, and then the following state two can be entered; alternatively, the isolation mechanism 100 may be grounded to enter the following state four.

State two, isolation mechanism 100 closes a floodgate, breaker separating brake state:

(1) interlocking in this state: the isolation operation interlocking structure 11 is matched with the isolation operation structure 102 under the driving of the movement of the first interlocking piece 1 so as to lock and prohibit the grounding operation of the isolation mechanism 100; the second interlock 2 moves to the breaking and closing operation unit 211 that releases the circuit breaker to allow the closing operation of the circuit breaker; the fourth interlock 4 keeps the first door latch assembly 61 in a position of mating with the cabinet door 300 to lock the cable compartment cabinet door 300, at which time the cabinet door 300 cannot be opened.

(2) Operations that can be performed in this state: the circuit breaking and closing operation unit 211 is operated to perform a closing operation on the circuit breaker, and the following state three can be entered for power transmission; alternatively, the isolation operation structure 102 on the isolation panel 101 may be used to open the isolation mechanism 100, and the state one may be entered.

State three, isolation mechanism 100, the equal switch-on state of circuit breaker:

(1) interlocking in this state: the isolation operation barrier 31 of the third interlocking member 3 is moved to a position for shielding the isolation operation structure 102 by the second telescopic rod 32, so as to prohibit the operation of the isolation operation structure 102.

(2) Operations that can be performed in this state: the second state can be entered by operating the breaking and opening operation unit 212 to open the breaker.

State four, isolation mechanism 100 ground connection, circuit breaker open brake state:

(1) interlocking in this state: under the moving drive of the first interlocking part 1, the isolation operation interlocking structure 11 is matched with the isolation operation structure 102 to lock and prohibit the closing operation of the isolation mechanism 100; the second interlock 2 moves to the breaking and closing operation unit 211 that releases the circuit breaker to allow the closing operation of the circuit breaker; the fourth interlock 4 keeps the first door latch assembly 61 in a position of mating with the cabinet door 300 to lock the cable compartment cabinet door 300, at which time the cabinet door 300 cannot be opened.

(2) Operations that can be performed in this state: the circuit breaking and closing operation unit 211 is operated to perform a closing operation on the circuit breaker, so that the following state five can be entered for effective grounding; alternatively, the isolation operation structure 102 on the isolation panel 101 may be used to open the isolation mechanism 100, and the state one may be entered.

State five, isolation mechanism 100 ground connection, circuit breaker closing state:

(1) interlocking in this state: the isolation operation baffle 31 of the third interlocking member 3 is driven by the second telescopic rod 32 to move to a position for shielding the isolation operation structure 102, so as to forbid the operation on the isolation operation structure 102; the fourth interlocking member 4 drives the first door lock latch assembly 61 to retract so as to unlock the cabinet door 300, and at this time, the cabinet door 300 can be opened. Under this state, the cable chamber cabinet body is in effective ground connection state to effectively discharge to the cubical switchboard, prevent that the indoor response of cable and remaining high-tension electricity from causing personnel to electrocute, thereby guarantee operating personnel's safety.

If the cabinet door 300 is further opened, the second door lock bolt assembly 62 telescopically and elastically resisting against the cabinet door 300 extends out because the door 300 is not limited any more, and drives the fifth interlocking member 5 to move to the open-circuit and open-circuit operation unit 212 for locking the circuit breaker, so as to prohibit the open-circuit operation of the circuit breaker and avoid electric shock hazard to an operator due to the open-circuit misoperation of the circuit breaker when the isolation mechanism 100 is in a grounding state; until the cabinet door 300 is closed, the second latch 622 assembly is restricted by the cabinet door 300 to retract, and drives the fifth interlocking member 5 to move to release the circuit breaker opening operation unit 212 of the circuit breaker, so as to allow the opening operation of the circuit breaker.

(2) Operations that can be performed in this state: the cabinet door 300 is opened for maintenance and other operations; or, the fourth state can be entered by operating the breaking and opening operation unit 212 to open the breaker.

In this embodiment, five sets of interlocking members are provided between the isolation mechanism 100, the circuit breaker and the cable chamber cabinet door 300, so that the cable chamber cabinet door 300 can be interlocked in the above five states, that is, "five-prevention" interlocking, and thus, erroneous operations such as a wrong on/off circuit breaker, a loaded on/off isolation switch, a live ground wire, a ground switch, a grounded switch, and a wrong live interval can be prevented from occurring in electrical operation.

It should be noted that, in the present embodiment, the first door lock tongue assembly 61 can be extended in a normal state to lock the cabinet door 300, and the "normal state" refers to four states other than the state five of the above five states, i.e., the state one to the state four.

Further, the isolation operation structure 102 includes an isolation closing operation hole 1021 and an isolation grounding operation hole 1022 which are vertically spaced and staggered on the isolation panel 101; the first interlocking part 1 is limited on the isolation panel 101 in a horizontal sliding mode and is matched and linked with a three-station state of the isolation mechanism 100, the first interlocking part 1 can be matched with the isolation operation structure 102 through the isolation operation interlocking structure 11 in the horizontal sliding process to realize interlocking of grounding operation and closing operation of the isolation mechanism 100, the first interlocking part 1 has three working positions, and the first position is located between the second position and the third position; when the isolating mechanism 100 is in the neutral state, the first interlock piece 1 moves to a first position where the isolating operation interlocking structure 11 opens the isolating switch-on operation hole 1021 and the isolating ground operation hole 1022, respectively, as shown in fig. 2; when the isolation mechanism 100 is in a closing state, the first interlock piece 1 moves to a second position where the isolation operation interlock structure 11 opens the isolation closing operation hole 1021 and blocks the isolation grounding operation hole 1022, as shown in fig. 3; when the isolation mechanism 100 is in the ground state, the first interlock member 1 moves to a third position where the isolation operation interlock structure 11 blocks the opening and closing operation hole and opens the isolation ground operation hole 1022.

With such an arrangement, the first interlocking part 1 can be matched with the isolation operation structure 102 through the isolation operation interlocking structure 11 in the horizontal sliding process, so as to realize interlocking of the grounding operation and the closing operation of the isolation mechanism 100, and can avoid grounding operation on the isolation mechanism 100 when the isolation mechanism 100 is in the closing state and closing operation on the isolation mechanism 100 when the isolation mechanism 100 is in the grounding state.

In this embodiment, the first interlocking member 1 is in transmission connection with the isolation mechanism 100 through the second transmission mechanism 103. The connection end of the second transmission mechanism 103 and the first interlocking member 1 is a transmission rod 1031 which is installed and connected to the first interlocking member 1, and the second transmission mechanism 103 drives the first interlocking member 1 to move in the horizontal direction through the transmission rod 1031.

As shown in fig. 1 to 3, when the first interlocking member 1 is at the first position, the isolation operation interlocking structure 11 opens the isolation closing operation hole 1021 and the isolation grounding operation hole 1022, respectively, and at this time, the operation handle can be inserted into the isolation closing operation hole 1021 to rotate in the first direction to perform a closing operation on the isolation switch, the first interlocking member 1 is driven by the isolation mechanism 100 to horizontally move from the first position to the second position, and the isolation operation interlocking structure 11 opens the isolation closing operation hole 1021 and shields the isolation grounding operation hole 1022; rotating in a second direction opposite to the first direction in the isolation closing operation hole 1021 to reset the isolation switch to an opening state, and horizontally moving the first interlocking piece 1 from the second position to the first position;

or, the first interlocking member 1 is inserted into the isolated grounding operation hole 1022 through the operating handle and rotates in the third direction to perform grounding operation on the isolating switch under the first position, the first interlocking member 1 moves horizontally from the first position to the third position under the driving of the isolating mechanism 100, and the isolated operation interlocking structure 11 shields the isolated closing operation hole and opens the isolated grounding operation hole 1022; the disconnecting switch is reset to the open state by rotating in a fourth direction opposite to the third direction when the disconnecting switch is inserted into the isolated ground operation hole 1022, and the first interlocking member 1 is horizontally moved from the third position to the first position.

Further, as shown in fig. 1 to 3 and 5, the isolation operation interlock structure 11 includes an interlock plate body 111 disposed opposite to the isolation panel 101, and an isolation closing operation avoidance groove 1111 and an isolation grounding operation avoidance groove 1112 disposed on the interlock plate body 111 corresponding to the isolation closing operation hole 1021 and the isolation grounding operation hole 1022, and the interlock plate body 111 is laterally movable between a first position and a second position and between the first position and a third position along the isolation panel 101; when the first interlocking member 1 is at the first position, the isolation and closing operation avoidance groove 1111 corresponds to and coincides with the isolation and closing operation hole 1021 to open the isolation and closing operation hole 1021, and the isolation and grounding operation avoidance groove 1112 corresponds to and coincides with the isolation and grounding operation hole 1022 to open the isolation and grounding operation hole 1022, as shown in fig. 2; when the first interlocking member 1 is at the second position, the isolation and closing operation avoidance groove 1111 and the isolation and closing operation hole 1021 are correspondingly overlapped to open the isolation and closing operation hole 1021, and the isolation and grounding operation avoidance groove 1112 and the isolation and grounding operation hole 1022 are staggered to block the isolation and grounding operation hole 1022, as shown in fig. 3; when the first interlock member 1 is at the third position, the isolation and closing operation avoidance groove 1111 is staggered from the isolation and closing operation hole 1021 to block the isolation and closing operation hole 1021, and the isolation and grounding operation avoidance groove 1112 is correspondingly overlapped with the isolation and grounding operation hole 1022 to open the isolation and grounding operation hole 1022.

Alternatively, as shown in fig. 5, a projection of the isolation and closing operation hole 1021 on the interlock plate body 111 may fall into the isolation and closing operation avoiding groove 1111; the projection of the isolated ground access aperture 1022 onto the interlock plate body 111 may fall into the isolated ground access relief groove 1112. Preferably, the isolation closing operation hole 1021 and the isolation grounding operation hole 1022 are both round holes; the isolation closing operation avoiding groove 1111 and the isolation grounding operation avoiding groove 1112 are both transversely extending waist-shaped holes.

Alternatively, as shown in fig. 5, a first guide groove extending in the transverse direction is provided on the interlocking plate 111, and a first guide component adapted to be slidably fitted with the first guide groove is fixedly provided on the isolation panel 101, and adapted to cooperate with the first guide groove to guide the sliding installation portion; optionally, the first guide assembly comprises at least two first mounts spaced apart in the longitudinal direction. Preferably, the first mounting member is a screw or bolt mounted on the insulation panel 101.

Optionally, as shown in fig. 2, fig. 3 and fig. 5, the first interlocking part 1 further includes a bending guide plate 12 fixedly disposed on the bottom edge of the interlocking plate 111, the bending guide plate 12 is disposed along the length direction of the interlocking plate 111, the bending guide plate 12 has at least two bending portions, one ends of the second interlocking part 2 and the fourth interlocking part 4 respectively abut against the two bending portions of the bending guide plate 12, and the second interlocking part 2 and the fourth interlocking part 4 are adapted to move up and down under the guide of the bending portions of the bending guide plate 12 when the interlocking plate 111 moves laterally.

Further, as shown in fig. 1 to 3, the circuit breaker includes a circuit breaker panel 201 and a circuit breaker crank arm 202, and the circuit breaker panel 201 is provided with the circuit breaking and closing operation unit 211 and the circuit breaking and opening operation unit 212; the breaker connecting lever 202 is rotatably arranged on the breaker panel 201, the breaker connecting lever 202 is in transmission connection with the breaker closing operation unit 211 and the breaker opening operation unit 212 through the first transmission mechanism 203, and the breaker connecting lever 202 is suitable for rotating in the forward direction when the breaker closing operation unit 211 generates triggering operation and rotating in the reverse direction when the breaker opening operation unit 212 generates triggering operation; when the breaker crank arm 202 rotates forward or backward, the second telescopic rod 32 can be driven to move downward or upward, so as to drive the isolation operation baffle 31 to move to block or open the isolation operation structure 102.

Alternatively, as shown in fig. 6, the second interlock member 2 includes a first telescopic rod 21 and a circuit breaking and closing stopper 22, the first telescopic rod 21 is telescopically arranged on the circuit breaker panel 201 in the longitudinal direction, and the upper end of the first telescopic rod 21 is slidably fitted with the top wall of the bending guide plate 12; the breaking and closing stop member 22 is fixedly connected to a lower end of the first telescopic rod 21, and the first telescopic rod 21 is adapted to be driven by the bending guide plate 12 to move in a vertically telescopic manner, and can lock or release the breaking and closing operation unit 211 by driving the breaking and closing stop member 22 to move.

Further, as shown in fig. 6, the breaking and closing operation unit 211 includes a breaking and closing button 2111 adapted to implement a closing operation of the circuit breaker by pressing, and a closing stop mating member 2112 adapted to be in limit mating with the breaking and closing stopper 22 is fixedly mounted on an operation shaft of the breaking and closing button 2111; when the first telescopic rod 21 drives the disconnecting and closing stopper 22 to move up and down, the disconnecting and closing stopper 22 may be in abutting engagement with or disengaged from the closing stopping fitting 2112, so as to limit or allow the disconnecting and closing button 2111 to move in the pressing direction.

Preferably, in this embodiment, as shown in fig. 2, 3 and 6, the upper end of the first telescopic rod 21 has a high position and two low positions under the abutment of the bending guide plate 12, when the isolation structure is in the middle opening state, the first interlocking member 1 moves to the first position where the isolation operation interlocking structure 11 opens the isolation and closing operation hole 1021 and the isolation and grounding operation hole 1022, respectively, and at this time, the first telescopic rod 21 is in the high position under the guide of the bending guide plate 12 and drives the breaking and closing stop member 22 to abut against and cooperate with the closing stop fitting member 2112 to limit the movement of the breaking and closing button 2111 along the pressing direction, so that the manual closing operation of the circuit breaker cannot be performed. When the isolation structure is in a closing or grounding state, the first interlocking part 1 moves horizontally to the second position or the third position correspondingly, at this time, the first telescopic rod 21 moves downwards to the low position under the guidance of the bending guide plate 12, and drives the breaking and closing stop piece 22 to be separated from the blocking cooperation with the closing stop fitting piece 2112, so that the breaking and closing button 2111 is allowed to move along the pressing direction, and the manual closing operation of the circuit breaker can be performed.

Alternatively, as shown in fig. 2 and 6, the second telescopic rod 32 is telescopically arranged on the circuit breaker panel 201 along the longitudinal direction, and the second telescopic rod 32 is subjected to a biasing force tending to move downwards; the third interlocking part 3 further comprises a first linkage matching part 33 arranged on the second telescopic rod 32, the bottom wall of the first linkage matching part 33 can be in abutting fit with the circuit breaker connecting lever 202, when the circuit breaker is subjected to a switching-off operation, the circuit breaker connecting lever 202 rotates reversely and drives the first linkage matching part 33 in abutting fit with the circuit breaker connecting lever 202 to move upwards, and the isolation operation structure 102 is opened by the isolation operation baffle 31 by driving the isolation operation baffle 31 to move upwards; when the circuit breaker is switched on, the circuit breaker connecting lever 202 can release the blocking on the bottom wall of the first linkage matching part 33 when rotating in the forward direction, the isolation operation baffle 31 can be driven by the second telescopic rod 32 to reset downwards to move so as to shield the isolation operation structure 102, and at this time, the isolation mechanism 100 can not be switched on or switched off or grounded.

Further, as shown in fig. 2, 6 and 7, the second telescopic rod 32 is provided with an elastic restoring member, and the elastic restoring member is adapted to apply a biasing force tending to move downwards to the second telescopic rod 32; optionally, first linkage cooperation portion 33 is a bending plate, first linkage cooperation portion 33 one end and isolation operation baffle 31 erection joint, the other end to being close to the direction of circuit breaker connecting lever 202 extend for with the cooperation of circuit breaker connecting lever 202, the upper end fixed mounting of second telescopic link 32 is close to the middle part position on first linkage cooperation portion 33.

Further, as shown in fig. 2, 3 and 5, the isolation operation blocking plate 31 includes an isolation closing operation blocking portion 311 and an isolation grounding operation blocking portion 312 which are vertically spaced, the isolation closing operation blocking portion 311 may be correspondingly overlapped with the isolation closing operation hole 1021 to block the isolation closing operation hole 1021, and the isolation grounding operation blocking portion 312 may be correspondingly overlapped with the isolation grounding operation hole 1022 to block the isolation grounding operation hole 1022; an avoidance slot hole is formed in the isolation operation barrier 31, and the avoidance slot hole is suitable for being correspondingly overlapped with the isolation closing operation hole 1021 or the isolation grounding operation hole 1022 to open the isolation closing operation hole 1021 and the isolation grounding operation hole 1022 when the isolation operation barrier 31 moves up and down.

Further, as shown in fig. 5, the isolation operation baffle 31 further includes a sliding installation portion longitudinally sliding and limited on the isolation panel 101, each end of the isolation closing operation shielding portion 311 and the isolation grounding operation shielding portion 312 is integrally connected with the sliding installation portion, a second guide groove longitudinally extending is provided on the sliding installation portion, a second guide component adapted to be in sliding fit with the second guide groove is fixedly provided on the isolation panel 101, and the second guide component is adapted to be matched with the second guide groove to guide and limit the sliding installation portion. Optionally, the second guiding assembly comprises at least two second mounting members spaced apart in the longitudinal direction, preferably the second mounting members are screws or bolts mounted on the insulation panel 101.

Optionally, as shown in fig. 2, 3 and 7, the fourth interlock 4 has a second interlock fitting portion 41 adapted to be interlocked with the circuit breaker when the isolation mechanism 100 is in the ground state, and the second interlock fitting portion 41 can be moved downward or upward by the fourth interlock 4 to enter or leave the action path of the circuit breaker crank arm 202; when the second linkage matching part 41 moves downwards and enters the action path of the breaker crank arm 202, the breaker crank arm 202 can press the second linkage matching part 41 downwards when rotating in the forward direction, so as to drive the fourth linkage piece 4 to continue to move downwards to trigger the first door lock latch assembly 61 to enter a retracted unlocking state.

In this embodiment, the forward rotation direction of the breaker crank arm 202 is the counterclockwise rotation direction of the breaker crank arm 202 in fig. 1 and 2, and the reverse rotation direction is the clockwise rotation direction.

Alternatively, as shown in fig. 7, the acting end of the breaker crank arm 202, which abuts against the bottom wall of the first linkage matching part 33, is a pin; the circuit breaker crank arm 202 can press down the second linkage fitting 41 by the pin when the second linkage fitting 41 is on the path of action of the fourth linkage 4 moving down into the circuit breaker crank arm 202.

Alternatively, as shown in fig. 2 and 7, the fourth interlocking member 4 includes a third telescopic rod 42 telescopically arranged on the circuit breaker panel 201 along the longitudinal direction, the third telescopic rod 42 is subjected to a biasing force tending to move upward, the upper end of the third telescopic rod 42 abuts against the bottom wall of the bending guide plate 12, and the lower end is movably connected with the first door lock bolt assembly 61; the second interlocking part 41 is fixedly mounted on the third telescopic rod 42, and the third telescopic rod 42 is suitable for moving downwards under the guiding action of the bending guide plate 12 when the first interlocking part 1 moves transversely so as to drive the second interlocking part 41 to enter the action path of the circuit breaker crank arm 202, and is suitable for moving upwards to drive the second interlocking part 41 to separate from the action path of the circuit breaker crank arm 202 when resetting. Optionally, the third telescopic rod 42 is provided with an elastic member adapted to apply an upward biasing force to the third telescopic rod 42; preferably, the elastic member is a compression spring.

Preferably, as shown in fig. 2 and 7, in the present embodiment, the third telescopic rod 42 is stopped against the bottom wall of the bending guide plate 12 at the upper end under the action of an upward biasing force, and has two high positions and one low position. When the isolation structure is in a middle opening or closing state, the first interlocking part 1 correspondingly moves horizontally to a first position or a second position, the third telescopic rod 42 is guided by the bending guide plate 12 to be in a high-position, the second interlocking part 41 is not in an action path of the breaker crank arm 202, and the breaker crank arm 202 cannot drive the fourth interlocking part 4 to move when rotating in the forward direction; when isolation structure is in the ground state, first interlocking part 1 corresponds horizontal migration to the third position, and the third telescopic link 42 moves down to the low level position under the guide of the guide board 12 of buckling this moment, and second interlocking cooperation portion 41 enters into the effect route of circuit breaker turning arm 202 this moment, and circuit breaker turning arm 202 can push down second interlocking cooperation portion 41 when forward rotation to through driving fourth interlocking part 4 downstream, drive first lock insertion tongue subassembly 61 and retract in order to unblock cabinet door 300, can open cabinet door 300 this moment.

Alternatively, as shown in fig. 2, 6 and 7, the fifth interlocking part 5 includes a fourth telescopic rod 51 telescopically arranged on the breaker panel 201 along the longitudinal direction, the fourth telescopic rod 51 is subjected to a biasing force tending to move upwards, and the lower end of the fourth telescopic rod 51 is movably connected with the second door locking and inserting tongue assembly 62; the circuit breaking and breaking stop piece 52 is fixedly connected to the upper end of the fourth telescopic rod 51 and used for locking or releasing the circuit breaking and closing operation unit 211; the second door lock latch assembly 62 is adapted to drive the fourth telescopic rod 51 to move downward when the cabinet door 300 is opened, and drive the disconnecting and opening stop member 52 to move downward to a locking position for the disconnecting and opening operation unit 212; the second door lock bolt assembly 62 is adapted to return upward to a position for unlocking the disconnecting/opening operation unit 212 when the fourth telescopic rod 51 moves upward.

Alternatively, as shown in fig. 4 and 6, the disconnecting and opening operation unit 212 includes a disconnecting and opening button 2121 adapted to perform the opening operation of the circuit breaker by pressing operation, and an opening stop fitting 2122 adapted to be in limit fitting with the disconnecting and opening stopper 52 is fixedly mounted on an operation shaft of the disconnecting and opening button 2121; when the fourth telescopic rod 51 drives the disconnecting and opening stop 52 to move up and down, the disconnecting and opening stop 52 can be in abutting engagement with or disengaged from the disconnecting and opening stop fitting 2122 to limit or allow the disconnecting and opening button 2121 to move in the pressing direction.

Optionally, as shown in fig. 2, 8 and 9, the first door lock-latch assembly 61 and the second door lock-latch assembly 62 have the same structure, the first door lock-latch assembly 61 includes a first linkage rod 611 and a first latch 612, one end of the first linkage rod 611 is connected to the bottom end of the third telescopic rod 42, the other end of the first linkage rod 611 is hinged to the first latch 612, and the first latch 612 is telescopically disposed on the cable chamber cover 400; the cable chamber cabinet door 300 is provided with a lock hole 301 matched with the first insertion tongue 612, and the first insertion tongue 612 extends out of the cable chamber cover 400 and into the lock hole 301 of the cable chamber cabinet door 300 to realize the insertion and locking of the cabinet door 300. The second door lock latch assembly 62 includes a second linking rod 621 and a second latch 622, one end of the second linking rod 621 is connected to the bottom end of the fourth telescopic rod 51, the other end of the second linking rod is hinged to the second latch 622, and the second latch 622 is telescopically disposed on the cable chamber cover 400. Preferably, compression springs are provided on the first tab 612 and the second tab 622 adapted to apply a biasing force to the tabs tending to extend out of the cable chamber cover 400.

So set up, third telescopic link 42 accessible drives first linkage rod 611 and rotates when the downstream to drive and first linkage rod 611 articulated first insert the tongue 612 withdrawal, thereby unblock cabinet door 300, can open cabinet door 300 this moment, for guaranteeing personnel's safety, the internal portion of cable chamber cabinet needs to be in effective ground state, in order to effectively discharge to the cubical switchboard, prevent that the response electricity in the cable chamber and remaining high-tension electricity from causing personnel to electrocute, thereby guarantee operating personnel's safety. If the cabinet door 300 is further opened, the second inserting tongue 622 elastically and telescopically abutting against the cabinet door 300 extends out due to no longer being limited by the cabinet door 300, and drives the second connecting rod to rotate so as to drive the fourth telescopic rod 51 to move upwards to the circuit breaking and opening operation unit 212 for locking the circuit breaker, so that the opening operation of the circuit breaker is forbidden, and the electric shock hazard to an operator due to the misoperation of opening the circuit breaker when the isolating mechanism 100 is in a grounding state is avoided; until the cabinet door 300 is closed, the second inserting tongue 622 is restricted by the cabinet door 300 to retract, and drives the fourth telescopic rod 51 to move downwards to release the circuit breaker opening operation unit 212 of the circuit breaker, so as to allow the opening operation of the circuit breaker.

Optionally, as shown in fig. 2, a guide mounting plate 204 is fixedly mounted on an inner wall of the circuit breaker panel 201, a mounting through hole through which the first telescopic rod 21, the second telescopic rod 31, the third telescopic rod 41 and the fourth telescopic rod 51 can pass is provided on the guide mounting plate 204, and the first telescopic rod 21, the second telescopic rod 31, the third telescopic rod 41 and the fourth telescopic rod 51 are slidably mounted on the circuit breaker panel 201 through the guide mounting plate 204.

Optionally, as shown in fig. 4, a circuit breaker state indicating window 205 for indicating a state of the circuit breaker is disposed on an outer wall of the circuit breaker panel 201, and includes an energy storage indicating window, a switching-on/off indicating window, and a counter window; the outer wall of the breaker panel 201 is also provided with a manual energy storage operation hole 206, and the pressing ends of the circuit breaking and closing button 2111 and the circuit breaking and opening button 2121 are both arranged on the outer wall of the breaker panel 201.

Optionally, as shown in fig. 4, an isolation status indication window 104 for displaying a three-station status of the isolation structure is further disposed on an outer wall of the isolation panel 101.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. An interlock for upper and lower disconnecting switches, comprising a disconnecting mechanism (100) and a circuit breaker, and an interlock mechanism drivingly disposed between the disconnecting mechanism (100) and the circuit breaker, the interlock mechanism comprising:

the first interlocking piece (1) is arranged on an isolation panel (101) of the isolation mechanism (100) in a sliding mode, an isolation operation structure (102) for grounding and/or closing operation is arranged on the isolation panel (101), the first interlocking piece (1) comprises an isolation operation interlocking structure (11), and the isolation operation interlocking structure (11) is suitable for being matched with the isolation operation structure (102) in the moving process of the first interlocking piece (1) so as to realize interlocking of the grounding operation and the closing operation of the isolation mechanism (100);

a second interlocking member (2) having one end in up-and-down interlocking fit with the first interlocking member (1) and the other end adapted to lock or release a circuit breaking and closing operation unit (211) of the circuit breaker in the process of up-and-down movement of the first interlocking member (1) to prohibit or allow a closing operation of the circuit breaker;

the third interlocking piece (3) comprises an isolation operation baffle (31) arranged between the isolation panel (101) and the first interlocking piece (1) and a second telescopic rod (32) arranged between the isolation operation baffle (31) and the circuit breaker, wherein the second telescopic rod (32) is in linkage fit with the circuit breaker, is suitable for moving up and down along with the circuit breaker when the circuit breaker performs switching-on operation and switching-off operation, and drives the isolation operation baffle (31) to move so as to open or shield the isolation operation structure (102);

one end of the fourth interlocking piece (4) is in up-and-down linkage fit with the first interlocking piece (1), the other end of the fourth interlocking piece is provided with a first door lock inserting tongue component (61) suitable for being in inserting fit with the cabinet door, and the first door lock inserting tongue component (61) has a locking state of extending out of the locked cabinet door under a normal state and an unlocking state of retracting when the isolating mechanism (100) is grounded and the circuit breaker performs closing operation;

and a fifth interlocking member (5) having one end provided with a second door locking and inserting tongue assembly (62) adapted to be elastically and retractably abutted against the cabinet door and the other end adapted to lock or release a breaking and opening operation unit (212) of the circuit breaker during the telescopic movement of the second door locking and inserting tongue assembly (62) to prohibit or allow the opening operation of the circuit breaker.

2. The interlock apparatus of upper and lower isolation circuit breakers according to claim 1, wherein the isolation operation structure (102) comprises an isolation closing operation hole (1021) and an isolation grounding operation hole (1022) which are spaced up and down and are disposed on the isolation panel (101) in a staggered manner;

the first interlocking piece (1) is limited on the isolation panel (101) in a horizontal sliding mode and is in linkage with a three-station state of the isolation mechanism (100) in a matching mode, the first interlocking piece (1) can be matched with the isolation operation structure (102) through the isolation operation interlocking structure (11) in the horizontal sliding process to achieve interlocking of grounding operation and closing operation of the isolation mechanism (100), the first interlocking piece (1) has three working positions, and the first position is located between the second position and the third position;

when the isolation mechanism (100) is in a middle position state, the first interlocking piece (1) moves to a first position where the isolation operation interlocking structure (11) respectively opens an isolation closing operation hole (1021) and an isolation grounding operation hole (1022);

when the isolation mechanism (100) is in a closing state, the first interlocking piece (1) moves to a second position where the isolation operation interlocking structure (11) opens the isolation closing operation hole (1021) and shields the isolation grounding operation hole (1022);

when the isolation mechanism (100) is in a grounding state, the first interlocking piece (1) moves to a third position where the isolation operation interlocking structure (11) shields the opening and closing operation hole and opens the isolation grounding operation hole (1022).

3. The interlock apparatus of upper and lower disconnecting switches according to claim 2, wherein the disconnecting operation interlock structure (11) comprises an interlock plate body (111) disposed opposite to the disconnecting panel (101), and an disconnecting switch operation avoidance slot (1111) and an disconnecting ground operation avoidance slot (1112) disposed on the interlock plate body (111) corresponding to the disconnecting switch operation hole (1021) and the disconnecting ground operation hole (1022), the interlock plate body (111) being laterally movable between the first position and the second position and between the first position and the third position along the disconnecting panel (101);

when the first interlocking member (1) is at a first position, the isolation and closing operation avoiding groove (1111) and the isolation and closing operation hole (1021) are correspondingly overlapped to open the isolation and closing operation hole (1021), and the isolation and grounding operation avoiding groove (1112) and the isolation and grounding operation hole (1022) are correspondingly overlapped to open the isolation and grounding operation hole (1022);

when the first interlocking member (1) is at the second position, the isolation and closing operation avoiding groove (1111) is correspondingly overlapped with the isolation and closing operation hole (1021) to open the isolation and closing operation hole (1021), and the isolation and grounding operation avoiding groove (1112) is staggered with the isolation and grounding operation hole (1022) to shield the isolation and grounding operation hole (1022);

when first interlocking piece (1) is in the third position, keep apart combined floodgate operation and dodge groove (1111) and keep apart combined floodgate operation hole (1021) and stagger mutually in order to shelter from and keep apart combined floodgate operation hole (1021), keep apart ground connection operation and dodge groove (1112) and keep apart ground connection operation hole (1022) corresponding coincidence in order to open and keep apart ground connection operation hole (1022).

4. The interlock apparatus of upper and lower disconnecting switches according to claim 3, wherein a projection of the disconnecting and closing operation hole (1021) on the interlock plate body (111) may fall into the disconnecting and closing operation avoiding groove (1111); and/or the presence of a gas in the gas,

the projection of the isolated ground access hole (1022) on the interlock plate body (111) may fall into the isolated ground access relief groove (1112).

5. The interlock apparatus of an upper isolation lower circuit breaker according to claim 4, wherein the isolation closing operation hole (1021) and the isolation grounding operation hole (1022) are both circular holes;

the isolation closing operation avoiding groove (1111) and the isolation grounding operation avoiding groove (1112) are transversely extending waist-shaped holes.

6. The interlock apparatus for upper and lower disconnecting switches according to any one of claims 3 to 5, wherein the first interlock member (1) further comprises:

bend guide board (12), fixed setting is in on the bottom border of interlocking board body (111), bend guide board (12) are followed the length direction of interlocking board body (111) extends the setting, bend guide board (12) have two at least kinks, second interlock piece (2) and fourth interlock piece (4) one end butt respectively are in on two kinks of bend guide board (12), second interlock piece (2) and fourth interlock piece (4) are suitable for during interlocking board body (111) lateral shifting bend the up-and-down motion under the guide of the kink of guide board (12).

7. The interlock of upper and lower disconnecting switches according to claim 6, wherein said circuit breaker comprises:

a circuit breaker panel (201) on which the breaking and closing operation unit (211) and the breaking and opening operation unit (212) are arranged;

the circuit breaker connecting lever (202) is rotatably arranged on a circuit breaker panel (201), the circuit breaker connecting lever (202) is in transmission connection with the circuit breaking and closing operation unit (211) and the circuit breaking and opening operation unit (212) through a first transmission mechanism (203), and the circuit breaker connecting lever (202) is suitable for rotating in the forward direction when the circuit breaking and closing operation unit (211) generates triggering operation and rotating in the reverse direction when the circuit breaking and opening operation unit (212) generates triggering operation;

when the breaker crank arm (202) rotates forwards or backwards, the second telescopic rod (32) can be driven to move downwards or upwards so as to drive the isolation operation baffle (31) to move to shield or open the isolation operation structure (102).

8. The interlock apparatus of upper and lower disconnecting switches according to claim 7, wherein the second interlock member (2) comprises:

the first telescopic rod (21) is arranged on the breaker panel (201) in a longitudinally telescopic mode, and the upper end of the first telescopic rod (21) is in sliding fit with the top wall of the bending guide plate (12);

and the breaking and closing stop piece (22) is fixedly connected to the lower end of the first telescopic rod (21), the first telescopic rod (21) is suitable for being driven by the bending guide plate (12) to do up-and-down telescopic motion, and the breaking and closing operation unit (211) can be locked or released by driving the breaking and closing stop piece (22) to move.

9. The interlock apparatus of upper and lower disconnecting switches according to claim 8, wherein the breaking and closing operation unit (211) comprises:

the circuit and switch-on button (2111) is suitable for realizing the switch-on operation of the circuit breaker through pressing operation, and a switch-on stopping matching piece (2112) suitable for being in limit matching with the circuit and switch-on stopping piece (22) is fixedly arranged on an operating shaft of the circuit and switch-on button (2111);

in the process that the first telescopic rod (21) drives the disconnecting and closing stop piece (22) to move up and down, the disconnecting and closing stop piece (22) can be in matched or separated from the matched abutting of the closing stop matching piece (2112) in a matched mode, and therefore the disconnecting and closing button (2111) is limited or allowed to move along the pressing direction.

10. The interlock device for upper and lower disconnecting switches according to claim 7, wherein the second telescopic rod (32) is telescopically arranged in a longitudinal direction on the circuit breaker panel (201), the second telescopic rod (32) being subjected to a biasing force tending to move downward; the third interlocking member (3) further comprises:

the first linkage matching part (33) is arranged on the second telescopic rod (32), the bottom wall of the first linkage matching part (33) can be in abutting fit with the circuit breaker crank arm (202), the first linkage matching part (33) is suitable for moving upwards under the driving of the reverse rotation of the circuit breaker crank arm (202), and the isolation operation structure (102) is opened by the isolation operation baffle plate (31) by driving the isolation operation baffle plate (31) to move upwards; the circuit breaker crank arm (202) can release the resistance to the bottom wall of the first linkage matching part (33) when rotating in the forward direction, and the isolation operation baffle (31) can reset downwards under the driving of the second telescopic rod (32) to move so as to shield the isolation operation structure (102).

11. The interlock device for upper and lower disconnecting switches according to claim 7, wherein said second telescopic rod (32) is provided with an elastic return member adapted to apply a biasing force tending to move downward to the second telescopic rod (32); and/or the presence of a gas in the gas,

first linkage cooperation portion (33) are a bending plate, first linkage cooperation portion (33) one end and isolation operation baffle (31) erection joint, the other end to being close to the direction of circuit breaker connecting lever (202) extends in order to supply with circuit breaker connecting lever (202) cooperation, the upper end fixed mounting of second telescopic link (32) is close to the middle part position on first linkage cooperation portion (33).

12. The interlock apparatus of upper and lower disconnecting switches according to claim 10 or 11, wherein the disconnecting operation blocking plate (31) includes an upper and a lower isolating and closing operation blocking portion (311) and an isolating and grounding operation blocking portion (312) which are spaced apart from each other, the isolating and closing operation blocking portion (311) can be correspondingly overlapped with the isolating and closing operation hole (1021) to block the isolating and closing operation hole (1021), and the isolating and grounding operation blocking portion (312) can be correspondingly overlapped with the isolating and grounding operation hole (1022) to block the isolating and grounding operation hole (1022);

an avoidance slotted hole is formed in the isolation operation baffle (31), and the avoidance slotted hole is suitable for being correspondingly overlapped with the isolation closing operation hole (1021) or the isolation grounding operation hole (1022) when the isolation operation baffle (31) moves up and down so as to open the isolation closing operation hole (1021) and the isolation grounding operation hole (1022).

13. The interlock apparatus for upper and lower disconnecting switches according to claim 7, wherein the fourth interlock (4) has a second interlocking part (41) adapted to be interlockingly engaged with the circuit breaker in a grounding state of the disconnecting switch (100), and the second interlocking part (41) is moved downward or upward by the fourth interlock (4) to enter or exit an action path of the circuit breaker crank arm (202);

when the second linkage matching part (41) moves downwards and enters the action path of the breaker crank arm (202), the breaker crank arm (202) can press the second linkage matching part (41) downwards when rotating in the forward direction so as to drive the fourth linkage piece (4) to continue to move downwards to trigger the first door lock insertion tongue assembly (61) to enter a retracted unlocking state.

14. The interlock of upper and lower disconnecting switches according to claim 13, wherein the fourth interlock (4) comprises:

the third telescopic rod (42) is arranged on the breaker panel (201) in a longitudinally telescopic manner, the third telescopic rod (42) is subjected to biasing force tending to move upwards, the upper end of the third telescopic rod (42) abuts against the bottom wall of the bending guide plate (12), and the lower end of the third telescopic rod is movably connected with the first door lock bolt assembly (61);

the second linkage matching part (41) is fixedly installed on the third telescopic rod (42), the third telescopic rod (42) is suitable for moving downwards under the guiding effect of the bending guide plate (12) when the first interlocking piece (1) moves transversely so as to drive the second linkage matching part (41) to enter the acting path of the circuit breaker crank arm (202), and the second linkage matching part (41) is suitable for moving upwards to drive the second linkage matching part (41) to be separated from the acting path of the circuit breaker crank arm (202) when resetting.

15. The interlock apparatus of upper and lower disconnecting switches according to any one of claims 1 to 5 and 7 to 11 and 13 to 14, wherein the fifth interlock (5) comprises:

the fourth telescopic rod (51) is arranged on the circuit breaker panel (201) in a longitudinally telescopic mode, the fourth telescopic rod (51) is subjected to biasing force tending to move upwards, and the lower end of the fourth telescopic rod is movably connected with the second door lock-latch assembly (62);

the breaking and opening stop piece (52) is fixedly connected to the upper end of the fourth telescopic rod (51) and used for locking or releasing the breaking and closing operation unit (211);

the second door lock bolt assembly (62) is suitable for driving the fourth telescopic rod (51) to move downwards when the cabinet door is opened, and driving the disconnecting and opening stop piece (52) to move downwards to a locking position of the disconnecting and opening operation unit (212); the second door lock bolt assembly (62) is suitable for resetting and moving upwards on the fourth telescopic rod (51) to an unlocking position for the circuit breaking and opening operation unit (212).

16. The interlock apparatus of upper and lower disconnecting switches according to claim 15, wherein the breaking opening operation unit (212) comprises:

the circuit breaking and opening button (2121) is suitable for realizing the opening operation of the circuit breaker through pressing operation, and an opening stop fitting piece (2122) suitable for being in limit fit with the circuit breaking and opening stop piece (52) is fixedly arranged on an operating shaft of the circuit breaking and opening button (2121);

when the fourth telescopic rod (51) drives the disconnecting and opening stop piece (52) to move up and down, the disconnecting and opening stop piece (52) can be in abutting fit or disengaged fit with the disconnecting and opening stop fitting piece (2122) so as to limit or allow the disconnecting and opening button (2121) to move along the pressing direction.