An interlocking device for upper isolation and lower circuit breaker

Abstract

The present invention provides an interlocking device with upper isolation and lower circuit breaker, comprising an isolation mechanism, a circuit breaker and an interlocking mechanism, wherein the interlocking mechanism comprises: a first interlocking member, which is slidably arranged on an isolation panel of the isolation mechanism, and is used to interlock the grounding operation and the closing operation of the isolation mechanism; a second interlocking member, which cooperates with the first interlocking member up and down, and is used to prohibit or allow the closing operation of the circuit breaker; a third interlocking member, which comprises an isolation operation baffle that can be moved to open or block the isolation operation structure; a fourth interlocking member, which cooperates with the first interlocking member up and down at one end, and is provided with a first door lock tongue assembly suitable for plugging and cooperating with a cabinet door at the other end; a fifth interlocking member, which is provided with a second door lock tongue assembly suitable for elastically stopping on the cabinet door in a telescopic manner at one end. The present invention can prevent erroneous operations such as wrongly opening and closing circuit breakers and opening and closing isolating switches with loads that occur in electrical operations.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, and in particular to an interlocking device with an upper isolator and a lower circuit breaker. Background Art

[0002] Box-type fixed AC metal-enclosed switchgear (XGN), as a new generation of miniaturized modular switchgear, consists of three-position switches and circuit breakers and other main switches to form various functional units and sealed gas boxes. In order to achieve the requirements of miniaturization, high reliability, intelligence and maintenance-free, the switch adopts a structural layout of upper isolation and lower circuit breaker, in which the isolation device adopts a direct-acting three-position isolation switch structure.

[0003] In the existing upper isolation and lower circuit breaker ring network cabinet, the structural layout adopted is that a three-position switch is arranged on the upper side and a circuit breaker is arranged on the lower side. In the upper isolation and lower circuit breaker ring network cabinet, the operation sequence of power supply is: closing the door, opening the circuit breaker, opening the grounding switch, closing the isolation switch, and closing the circuit breaker; the operation sequence of power off is: opening the circuit breaker, opening the isolation switch, closing the grounding switch, and closing the circuit breaker.

[0004] The interlocking mechanism of the existing upper isolator and lower circuit breaker ring network cabinet is not complete, and often causes invalid operation or repeated operation due to misoperation, which may seriously cause danger. For example, misoperations that may occur during power transmission operation include: closing the circuit breaker before closing the isolating switch, then the power transmission cannot be completed by closing the isolating switch, and the circuit breaker needs to be opened before closing the isolating switch, resulting in repeated operation of the isolating switch and the circuit breaker. For another example, misoperations that may occur during power-off operation include: closing the circuit breaker before closing the grounding switch, which will also cause repeated operation; after opening the cable room cabinet door, the operator may be in danger of electric shock due to misoperation of opening the circuit breaker.

[0005] Therefore, the present invention aims to provide a reliable mechanical interlock to effectively prevent misoperation and repeated operation. Summary of the invention

[0006] Therefore, the present invention aims to provide an interlocking device for upper isolation and lower circuit breaker, which can effectively prevent misoperation and repeated operation.

[0007] The present invention provides an interlocking device for an upper isolating and lower circuit breaker, the interlocking device for an upper isolating and lower circuit breaker comprising an isolating mechanism, a circuit breaker and an interlocking mechanism arranged between the isolating mechanism and the circuit breaker, the interlocking mechanism comprising:

[0008] a first interlocking member, slidably disposed on an isolation panel of the isolation mechanism, the isolation panel being provided with an isolation operation structure for grounding and / or closing operations, the first interlocking member comprising an isolation operation interlocking structure, the isolation operation interlocking structure being adapted to cooperate with the isolation operation structure during movement of the first interlocking member, so as to interlock the grounding operation and the closing operation of the isolation mechanism;

[0009] A second interlocking member, one end of which is linked with the first interlocking member in an up-and-down manner, and the other end of which is suitable for locking or releasing the circuit breaker closing and closing operation unit during the up-and-down movement of the first interlocking member, so as to prohibit or allow the closing operation of the circuit breaker;

[0010] A third interlocking member, comprising an isolation operation baffle disposed between the isolation panel and the first interlocking member, and a second telescopic rod disposed between the isolation operation baffle and the circuit breaker, wherein the second telescopic rod cooperates with the circuit breaker and is suitable for moving up and down with the circuit breaker when the circuit breaker performs closing and opening operations, and drives the isolation operation baffle to move to open or cover the isolation operation structure;

[0011] A fourth interlocking member, one end of which is linked with the first interlocking member in an up-and-down manner, and the other end of which is provided with a first door lock tongue assembly suitable for plugging and cooperating with the cabinet door, wherein the first door lock tongue assembly has a locked state in which it is extended to lock the cabinet door under normal conditions, and an unlocked state in which it is retracted when the isolation mechanism is grounded and the circuit breaker is closed;

[0012] The fifth interlocking member has one end provided with a second door lock tongue assembly suitable for being retractably and elastically stopped on the cabinet door, and the other end suitable for locking or releasing the circuit breaker opening and closing operation unit during the telescopic movement of the second door lock tongue assembly to prohibit or allow the circuit breaker opening operation.

[0013] Furthermore, the isolation operation structure includes an isolation closing operation hole and an isolation grounding operation hole which are spaced apart and staggered on the isolation panel;

[0014] The first interlocking member is horizontally slidably limited on the isolation panel and cooperates with the three-position state of the isolation mechanism. The first interlocking member can cooperate with the isolation operation structure through the isolation operation interlocking structure during the horizontal sliding process to realize the interlocking of the grounding operation and the closing operation of the isolation mechanism. The first interlocking member has three working positions, wherein the first position is located between the second position and the third position;

[0015] When the isolation mechanism is in the neutral state, the first interlocking member moves to the first position where the isolation operation interlocking structure opens the isolation closing operation hole and the isolation grounding operation hole respectively;

[0016] When the isolation mechanism is in the closed state, the first interlocking member moves to a second position where the isolation operation interlocking structure opens the isolation closing operation hole and blocks the isolation grounding operation hole;

[0017] When the isolation mechanism is in the grounding state, the first interlocking member moves to a third position in which the isolation operation interlocking structure blocks the clutch operation hole and opens the isolation grounding operation hole.

[0018] Further, the isolation operation interlocking structure comprises an interlocking plate body arranged opposite to the isolation panel, and an isolation closing operation avoidance groove and an isolation grounding operation avoidance groove arranged on the interlocking plate body corresponding to the isolation closing operation hole and the isolation grounding operation hole, and the interlocking plate body can move laterally along the isolation panel between the first position and the second position, and between the first position and the third position;

[0019] Wherein, when the first interlocking member is in the first position, the isolation closing operation avoidance groove overlaps with the isolation closing operation hole to open the isolation closing operation hole, and the isolation grounding operation avoidance groove overlaps with the isolation grounding operation hole to open the isolation grounding operation hole;

[0020] When the first interlocking member is in the second position, the isolation closing operation avoidance groove overlaps with the isolation closing operation hole to open the isolation closing operation hole, and the isolation grounding operation avoidance groove is staggered with the isolation grounding operation hole to cover the isolation grounding operation hole;

[0021] When the first interlocking member is in the third position, the isolation closing operation avoidance groove is staggered with the isolation closing operation hole to cover the isolation closing operation hole, and the isolation grounding operation avoidance groove is overlapped with the isolation grounding operation hole to open the isolation grounding operation hole.

[0022] Further, the projection of the isolation closing operation hole on the interlocking plate can fall into the isolation closing operation avoidance groove; and / or,

[0023] The projection of the isolation grounding operation hole on the interlocking plate body can fall into the isolation grounding operation avoidance groove.

[0024] Optionally, the isolation closing operation hole and the isolation grounding operation hole are both round holes;

[0025] The isolation closing operation avoidance groove and the isolation grounding operation avoidance groove are both waist-shaped holes extending laterally.

[0026] Optionally, the first interlocking member further includes:

[0027] A bending guide plate is fixedly arranged on the bottom edge of the interlocking plate body, and the bending guide plate is extended along the length direction of the interlocking plate body. The bending guide plate has at least two bending portions, and one end of the second interlocking member and the fourth interlocking member are respectively abutted against the two bending portions of the bending guide plate, and the second interlocking member and the fourth interlocking member are suitable for moving up and down under the guidance of the bending portion of the bending guide plate when the interlocking plate body moves laterally.

[0028] Furthermore, the circuit breaker comprises:

[0029] A circuit breaker panel, on which the circuit breaker closing operation unit and the circuit breaker opening operation unit are arranged;

[0030] A circuit breaker crank arm is rotatably arranged on the circuit breaker panel, the circuit breaker crank arm is respectively connected to the circuit breaker closing operation unit and the circuit breaker opening operation unit through a first transmission mechanism, and the circuit breaker crank arm is suitable for rotating forward when the circuit breaker closing operation unit generates a trigger operation, and rotating reversely when the circuit breaker opening operation unit generates a trigger operation;

[0031] When the circuit breaker crank arm rotates forward or reversely, it can drive the second telescopic rod to move downward or upward, so as to drive the isolation operation baffle to move to cover or open the isolation operation structure.

[0032] Optionally, the second interlocking member includes:

[0033] A first telescopic rod is longitudinally telescopically arranged on the circuit breaker panel, wherein the upper end of the first telescopic rod is slidably matched with the top wall of the bending guide plate;

[0034] The circuit breaker closing stopper is fixedly connected to the lower end of the first telescopic rod. The first telescopic rod is suitable for telescopic movement up and down driven by the bending guide plate, and can lock or release the circuit breaker closing operation unit by driving the circuit breaker closing stopper to move.

[0035] Optionally, the circuit breaker and closing operation unit includes:

[0036] A circuit breaker closing button, which is suitable for realizing the closing operation of the circuit breaker by pressing, and a closing stop fitting member suitable for limiting cooperation with the circuit breaker closing stop member is fixedly installed on the operating shaft of the circuit breaker closing button;

[0037] When the circuit breaker closing stopper is driven by the first telescopic rod to move up and down, the circuit breaker closing stopper can resist or disengage with the closing stopper matching piece to limit or allow the circuit breaker closing button to move in the pressing direction.

[0038] Optionally, the second telescopic rod is telescopically arranged on the circuit breaker panel in the longitudinal direction, and the second telescopic rod is subjected to a biasing force tending to move downward; the third interlocking member further includes:

[0039] The first linkage matching part is installed on the second telescopic rod, and the bottom wall of the first linkage matching part can cooperate with the circuit breaker crank arm. The first linkage matching part is suitable for moving upward under the reverse rotation of the circuit breaker crank arm, and driving the isolation operation baffle to move upward to realize the isolation operation baffle opening the isolation operation structure; the circuit breaker crank arm can release the resistance to the bottom wall of the first linkage matching part when rotating forward, and the isolation operation baffle can be reset downward under the drive of the second telescopic rod to cover the isolation operation structure.

[0040] Optionally, the second telescopic rod is provided with an elastic reset member, and the elastic reset member is suitable for applying a biasing force tending to move downward to the second telescopic rod; and / or,

[0041] The first linkage matching portion is a bent plate, one end of which is installed and connected to the isolation operation baffle, and the other end extends toward the direction close to the circuit breaker crank arm to cooperate with the circuit breaker crank arm, and the upper end of the second telescopic rod is fixedly installed on the first linkage matching portion near the middle position.

[0042] Optionally, the isolation operation baffle includes an isolation closing operation shielding portion and an isolation grounding operation shielding portion which are spaced apart from each other in the upper and lower parts, the isolation closing operation shielding portion can overlap with the isolation closing operation hole to cover the isolation closing operation hole, and the isolation grounding operation shielding portion can overlap with the isolation grounding operation hole to cover the isolation grounding operation hole;

[0043] An avoidance slot is formed on the isolation operation baffle, and the avoidance slot is suitable for correspondingly overlapping with the isolation closing operation hole or the isolation grounding operation hole when the isolation operation baffle moves up and down to open the isolation closing operation hole and the isolation grounding operation hole.

[0044] Optionally, the fourth interlocking member has a second interlocking matching portion adapted to be interlockingly matched with the circuit breaker when the isolation mechanism is in a grounded state, and the second interlocking matching portion can be driven by the fourth interlocking member to move downward or upward to enter or leave the action path of the circuit breaker crank arm;

[0045] When the second linkage matching portion moves downward and enters the action path of the circuit breaker crank arm, the circuit breaker crank arm can press down the second linkage matching portion when rotating forward to drive the fourth interlocking member to continue to move downward to trigger the first door lock tongue assembly to enter a retracted unlocked state.

[0046] Optionally, the fourth interlocking member includes:

[0047] A third telescopic rod is telescopically arranged on the circuit breaker panel in a longitudinal direction, the third telescopic rod is subjected to a biasing force tending to move upward, the upper end of the third telescopic rod abuts against the bottom wall of the bending guide plate, and the lower end is movably connected to the first door lock tongue assembly;

[0048] The second linkage matching portion is fixedly mounted on the third telescopic rod, and the third telescopic rod is suitable for moving downward under the guidance of the bending guide plate when the first interlocking member moves laterally, so as to drive the second linkage matching portion to enter the action path of the circuit breaker crank arm, and is suitable for moving upward during resetting to drive the second linkage matching portion to leave the action path of the circuit breaker crank arm.

[0049] Optionally, the fifth interlocking member includes:

[0050] a fourth telescopic rod, which is telescopically arranged on the circuit breaker panel in a longitudinal direction, the fourth telescopic rod is subjected to a biasing force tending to move upward, and the lower end of the fourth telescopic rod is movably connected to the second door lock tongue assembly;

[0051] A circuit breaker and opening stopper, fixedly connected to the upper end of the fourth telescopic rod, and used for locking or releasing the circuit breaker and closing operation unit;

[0052] The second door lock tongue assembly is suitable for driving the fourth telescopic rod to move downward when the cabinet door is opened, driving the circuit breaker stopper to move downward to a locking position for the circuit breaker operating unit; the second door lock tongue assembly is also suitable for the fourth telescopic rod to reset upward to an unlocking position for the circuit breaker operating unit.

[0053] Optionally, the circuit breaker and opening operation unit comprises:

[0054] A circuit breaker opening button, which is suitable for realizing the opening operation of the circuit breaker by pressing operation, and a circuit breaker opening stop matching piece suitable for limiting cooperation with the circuit breaker opening stop piece is fixedly installed on the operating shaft of the circuit breaker opening button;

[0055] When the circuit breaker and opening stopper is driven by the fourth telescopic rod to move up and down, the circuit breaker and opening stopper can resist or disengage with the opening stopper matching piece to limit or allow the circuit breaker and opening button to move in the pressing direction.

[0056] The technical solution of the present invention has the following advantages:

[0057] In the embodiment of the present invention, the isolation mechanism has three working positions of closing, opening or grounding. The following five states can be obtained by respectively operating the isolation mechanism and the circuit breaker. The five sets of interlocking parts can be interlocked accordingly in each state:

[0058] State 1: Isolation mechanism and circuit breaker are both open:

[0059] ① Interlocking in this state: the second interlocking member moves to lock the circuit breaker's circuit breaker closing and closing operation unit to prohibit the circuit breaker's closing operation; the fourth interlocking member moves to enable the first door lock tongue assembly to engage with the cabinet door to lock the cable room cabinet door, and the cabinet door cannot be opened at this time.

[0060] ② Operations that can be performed in this state: The isolation mechanism can be closed using the isolation operation structure on the isolation panel to enter the following state 2; or, the isolation mechanism can be grounded to enter the following state 4.

[0061] State 2: Isolation mechanism closed, circuit breaker open:

[0062] ① Interlocking in this state: the isolation operation interlocking structure cooperates with the isolation operation structure under the movement of the first interlocking member to lock and prohibit the grounding operation of the isolation mechanism; the second interlocking member moves to release the circuit breaker's circuit breaking and closing operation unit to allow the circuit breaker's closing operation; the fourth interlocking member keeps the first door lock tongue assembly in a position that cooperates with the cabinet door to lock the cable room cabinet door, and the cabinet door cannot be opened at this time.

[0063] ② Operations that can be performed in this state: operate the circuit breaker closing operation unit to close the circuit breaker, and then enter the following state three to supply power; or, use the isolation operation structure on the isolation panel to open the isolation mechanism, and then enter the above state one.

[0064] State 3: Isolation mechanism and circuit breaker are both closed:

[0065] ① Interlocking in this state: the isolation operation baffle of the third interlocking member is moved to a position to shield the isolation operation structure under the drive of the second telescopic rod to prohibit operation of the isolation operation structure.

[0066] ② Operations that can be performed in this state: Operate the circuit breaker opening operation unit to open the circuit breaker to enter the above state 2.

[0067] State 4: Isolation mechanism grounded, circuit breaker open state:

[0068] ① Interlocking in this state: driven by the movement of the first interlocking member, the isolation operation interlocking structure cooperates with the isolation operation structure to lock and prohibit the closing operation of the isolation mechanism; the second interlocking member moves to release the circuit breaker's circuit breaker closing operation unit to allow the circuit breaker closing operation; the fourth interlocking member keeps the first door lock tongue assembly in a position that cooperates with the cabinet door to lock the cable room cabinet door, and the cabinet door cannot be opened at this time.

[0069] ② Operations that can be performed in this state: operate the circuit breaker closing operation unit to close the circuit breaker, and enter the following state five for effective grounding; or, use the isolation operation structure on the isolation panel to open the isolation mechanism, and enter the above state one.

[0070] State 5: Isolation mechanism grounded, circuit breaker closed:

[0071] ① Interlocking in this state: The isolation operation baffle of the third interlocking member is driven by the second telescopic rod to move to the position of shielding the isolation operation structure to prohibit the operation of the isolation operation structure; the fourth interlocking member drives the first door lock tongue assembly to retract to unlock the cabinet door, and the cabinet door can be opened at this time. In this state, the cable room cabinet is in an effective grounding state to effectively discharge the switch cabinet and prevent the induction electricity and residual high voltage electricity in the cable room from causing electric shock to personnel, thereby ensuring the safety of operators.

[0072] If the cabinet door is further opened, the second door lock tongue assembly that is retractably and elastically abutted against the cabinet door extends out because it is no longer restricted by the cabinet door, and drives the fifth interlocking member to move to lock the circuit breaker opening and closing operation unit to prohibit the circuit breaker opening operation, thereby avoiding the risk of electric shock to the operator due to the erroneous opening operation of the circuit breaker when the isolation mechanism is in the grounded state; until the cabinet door is closed, the second tongue assembly 622 is restricted by the cabinet door and retracts, and drives the fifth interlocking member to move to release the circuit breaker opening and closing operation unit to allow the circuit breaker opening operation.

[0073] ② Operations that can be performed in this state: open the cabinet door for maintenance and other operations; or operate the circuit breaker opening operation unit to open the circuit breaker to enter the above-mentioned state four.

[0074] The present invention arranges five sets of interlocking parts between the isolation mechanism, the circuit breaker and the cable room cabinet door, so that the cable room cabinet door can be interlocked in the above five states, that is, the "five-prevention" interlocking, which can prevent erroneous operations such as mistaken opening and closing of circuit breakers, opening and closing of isolating switches with load, hanging ground wires with power on, closing ground switches, closing switches with ground wires on, and mistakenly entering live intervals during electrical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0076] Figure 1It is a structural schematic diagram of the interlocking device of the upper isolation and lower circuit breaker in the present invention;

[0077] Figure 2 for Figure 1 A schematic diagram of the structure of the interlocking device of the middle upper isolating lower circuit breaker after removing the second transmission mechanism and the first transmission mechanism;

[0078] Figure 3 for Figure 2 A front view of the interlocking device for isolating the upper circuit breaker from the lower circuit breaker after the second transmission mechanism and the first transmission mechanism are removed;

[0079] Figure 4 for Figure 2 Rear view of the interlocking device of the middle upper isolating lower circuit breaker;

[0080] Figure 5 It is a schematic structural diagram of the isolation panel, the isolation operation baffle and the first interlocking member in the present invention;

[0081] Figure 6 A schematic diagram of the structure of a portion of the interlocking mechanism located at the rear side of the circuit breaker panel from one viewing angle;

[0082] Figure 7 for Figure 6 A schematic diagram of the structure of a portion of the interlocking mechanism located at the rear side of the circuit breaker panel from another perspective;

[0083] Figure 8 It is a schematic diagram of the installation structure of the first door lock tongue assembly and the first door lock tongue assembly;

[0084] Fig. 9 This is a schematic diagram of the structure of the cable room cabinet door.

[0085] Description of reference numerals:

[0086] 100, isolation mechanism; 101, isolation panel; 102, isolation operation structure; 1021, isolation closing operation hole; 1022, isolation grounding operation hole; 103, second transmission mechanism; 1031, transmission rod; 104, isolation status indication window;

[0087] 201, circuit breaker panel; 202, circuit breaker arm; 211, circuit breaker closing operation unit; 2111, circuit breaker closing button; 2112, closing stop fitting; 212, circuit breaker opening operation unit; 2121, circuit breaker opening button; 2122, opening stop fitting; 203, first transmission mechanism; 204, guide mounting plate; 205, circuit breaker status indication window; 206, manual energy storage operation hole;

[0088] 300, cabinet door; 301, lock hole; 400, cable room cover;

[0089] 1. First interlocking member; 11. Isolation operation interlocking structure; 111. Interlocking plate; 1111. Isolation closing operation avoidance groove; 1112. Isolation grounding operation avoidance groove; 12. Bending guide plate;

[0090] 2. Second interlocking member; 21. First telescopic rod; 22. Circuit breaker and closing stopper;

[0091] 3. Third interlocking member; 31. Isolation operation baffle; 311. Isolation closing operation shielding portion; 312. Isolation grounding operation shielding portion; 32. Second telescopic rod; 33. First linkage matching portion;

[0092] 4. fourth interlocking member; 41. second linkage matching portion; 42. third telescopic rod;

[0093] 5. Fifth interlocking member; 51. Fourth telescopic rod; 52. Circuit breaker stopper;

[0094] 61. First door lock tongue assembly; 611. First linkage rod; 612. First tongue; 62. Second door lock tongue assembly; 621. Second linkage rod; 622. Second tongue. DETAILED DESCRIPTION

[0095] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0096] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0097] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0099] Example

[0100] like Figures 1 to 9 As shown, an embodiment of the present invention provides an interlocking device for an upper isolator and a lower circuit breaker, wherein the interlocking device for an upper isolator and a lower circuit breaker comprises an isolating mechanism 100 and a circuit breaker distributed up and down, and an interlocking mechanism transmitted between the isolating mechanism 100 and the circuit breaker, wherein the interlocking mechanism comprises a first interlocking member 1, a second interlocking member 2, a third interlocking member 3, a fourth interlocking member 4 and a fifth interlocking member 5. Specifically, the first interlocking member 1 is slidably arranged on the isolation panel 101 of the isolation mechanism 100, and the isolation panel 101 is provided with an isolation operation structure 102 for grounding and closing operations. The first interlocking member 1 includes an isolation operation interlocking structure 11, and the isolation operation interlocking structure 11 is suitable for cooperating with the isolation operation structure 102 during the movement of the first interlocking member 1 to achieve interlocking of the grounding operation and the closing operation of the isolation mechanism 100; one end of the second interlocking member 2 is linked with the first interlocking member 1 up and down, and the other end is suitable for locking or releasing the circuit breaker closing operation unit 211 of the circuit breaker during the up and down movement of the first interlocking member 1 to prohibit or allow the closing operation of the circuit breaker; the third interlocking member 3 includes an isolation operation baffle 31 arranged between the isolation panel 101 and the first interlocking member 1, and a The second telescopic rod 32 is linked with the circuit breaker and is suitable for moving up and down when the circuit breaker performs closing and opening operations, and drives the isolation operation baffle 31 to move to open or cover the isolation operation structure 102; one end of the fourth interlocking member 4 is linked with the first interlocking member 1 up and down, and the other end is provided with a first door lock tongue assembly 61 suitable for plugging and cooperating with the cabinet door 300, and the first door lock tongue assembly 61 has a locked state of extending and locking the cabinet door 300 under normal conditions and an unlocked state of retracting when the isolation mechanism 100 is grounded and the circuit breaker performs a closing operation; one end of the fifth interlocking member 5 is provided with a second door lock tongue assembly 62 suitable for elastically abutting against the cabinet door 300 in a telescopic manner, and the other end is suitable for locking or releasing the circuit breaker and opening operation unit 212 of the circuit breaker during the telescopic movement of the second door lock tongue assembly 62 to prohibit or allow the opening operation of the circuit breaker.

[0101] The basic interlocking logic of the interlocking device of the upper isolator and the lower circuit breaker in this implementation is: ① When the isolating switch is open, the circuit breaker is prohibited from closing; ② When the circuit breaker is closed, the isolating switch is prohibited from operating; ③ The isolating switch is interlocked during closing and grounding operations, that is, the grounding operation of the isolating switch is prohibited after the isolating switch is closed, and the closing operation of the isolating switch is prohibited after the isolating switch is grounded; ④ When the isolating switch is grounded and the circuit breaker is closed, the cable room cabinet door can be opened; ⑤ After the cable room cabinet door is opened, the circuit breaker is prohibited from opening.

[0102] In this embodiment, the isolation mechanism 100 has three working positions of closing, opening or grounding. The following five states can be obtained by performing corresponding operations on the isolation mechanism 100 and the circuit breaker respectively. The five sets of interlocking parts can be interlocked accordingly in each state:

[0103] State 1, isolation mechanism 100, circuit breaker evenly open state, such as Figure 2 As shown:

[0104] ① Interlocking in this state: the second interlocking member 2 moves to lock the circuit breaker's circuit breaker closing and closing operation unit 211 to prohibit the circuit breaker's closing operation; the fourth interlocking member 4 moves to enable the first door lock tongue assembly 61 to engage with the cabinet door 300 to lock the cable room cabinet door 300, and the cabinet door 300 cannot be opened at this time.

[0105] ② Operations that can be performed in this state: The isolation mechanism 100 can be closed using the isolation operation structure 102 on the isolation panel 101 to enter the following state 2; or, the isolation mechanism 100 can be grounded to enter the following state 4.

[0106] State 2: Isolation mechanism 100 is closed and circuit breaker is open:

[0107] ① Interlocking in this state: the isolation operation interlocking structure 11 cooperates with the isolation operation structure 102 under the movement of the first interlocking member 1 to lock and prohibit the grounding operation of the isolation mechanism 100; the second interlocking member 2 moves to release the circuit breaker's circuit breaker closing and closing operation unit 211 to allow the circuit breaker's closing operation; the fourth interlocking member 4 keeps the first door lock tongue assembly 61 in a position to be plugged and matched with the cabinet door 300 to lock the cable room cabinet door 300, and the cabinet door 300 cannot be opened at this time.

[0108] ② Operations that can be performed in this state: operate the circuit breaker closing operation unit 211 to close the circuit breaker, and enter the following state three to supply power; or, use the isolation operation structure 102 on the isolation panel 101 to open the isolation mechanism 100, and enter the above-mentioned state one.

[0109] State 3: Isolation mechanism 100 and circuit breaker are both closed:

[0110] ① Interlocking in this state: the isolation operation baffle 31 of the third interlocking member 3 is moved to a position to block the isolation operation structure 102 under the drive of the second telescopic rod 32 to prohibit operation of the isolation operation structure 102 .

[0111] ② Operations that can be performed in this state: operate the circuit breaker opening operation unit 212 to open the circuit breaker, and then enter the above-mentioned state 2.

[0112] State 4: Isolation mechanism 100 is grounded and circuit breaker is open:

[0113] ① Interlocking in this state: driven by the movement of the first interlocking member 1, the isolation operation interlocking structure 11 cooperates with the isolation operation structure 102 to lock and prohibit the closing operation of the isolation mechanism 100; the second interlocking member 2 moves to release the circuit breaker closing and disconnecting operation unit 211 to allow the closing operation of the circuit breaker; the fourth interlocking member 4 keeps the first door lock tongue assembly 61 in a position to be plugged and matched with the cabinet door 300 to lock the cable room cabinet door 300, and the cabinet door 300 cannot be opened at this time.

[0114] ② Operations that can be performed in this state: operate the circuit breaker closing operation unit 211 to close the circuit breaker, and enter the following state five for effective grounding; or, use the isolation operation structure 102 on the isolation panel 101 to open the isolation mechanism 100, and enter the above-mentioned state one.

[0115] State 5: Isolation mechanism 100 is grounded and circuit breaker is closed:

[0116] 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 that blocks the isolation operation structure 102 to prohibit operation of the isolation operation structure 102; the fourth interlocking member 4 drives the first door lock tongue assembly 61 to retract to unlock the cabinet door 300, and the cabinet door 300 can be opened at this time. In this state, the cable room cabinet is in an effective grounding state to effectively discharge the switch cabinet, prevent the inductive electricity and residual high voltage electricity in the cable room from causing electric shock to personnel, thereby ensuring the safety of operators.

[0117] If the cabinet door 300 is further opened, the second door lock tongue assembly 62 that is retractably and elastically abutted against the cabinet door 300 is extended out because it is no longer restricted by the cabinet door 300, and drives the fifth interlocking member 5 to move to lock the circuit breaker opening and closing operation unit 212 of the circuit breaker to prohibit the opening operation of the circuit breaker, thereby avoiding the risk of electric shock to the operator due to the erroneous opening operation of the circuit breaker when the isolation mechanism 100 is in the grounded state; until the cabinet door 300 is closed, the second tongue assembly 622 is restricted by the cabinet door 300 and retracts, and drives the fifth interlocking member 5 to move to release the circuit breaker opening and closing operation unit 212 of the circuit breaker to allow the opening operation of the circuit breaker.

[0118] ② Operations that can be performed in this state: opening the cabinet door 300 to perform maintenance operations, etc.; or, operating the circuit breaker and opening operation unit 212 to open the circuit breaker, and then entering the above-mentioned state four.

[0119] This embodiment provides five sets of interlocking parts between the isolation mechanism 100, the circuit breaker and the cable room cabinet door 300, so that the cable room cabinet door 300 can be interlocked in the above five states, that is, the "five-protection" interlocking, which can prevent erroneous operations such as mistaken opening and closing of circuit breakers, opening and closing isolating switches with load, hanging ground wires under power, closing grounding switches, closing switches with ground wires on, and mistakenly entering live intervals during electrical operations.

[0120] It should be noted that, in this embodiment, the first door lock tongue assembly 61 can be extended under normal conditions to lock the cabinet door 300, and "normal conditions" refer to the four states of the above five states except state five, namely state one to state four.

[0121] Furthermore, the isolation operation structure 102 includes an isolation closing operation hole 1021 and an isolation grounding operation hole 1022 which are spaced apart and staggered on the isolation panel 101; the first interlocking member 1 is horizontally slidably limited on the isolation panel 101 and cooperates with the three-position state of the isolation mechanism 100. The first interlocking member 1 can cooperate with the isolation operation structure 102 through the isolation operation interlocking structure 11 during the horizontal sliding process to achieve interlocking of the grounding operation and the closing operation of the isolation mechanism 100. The first interlocking member 1 has three working positions, wherein the first position is between the second position and the third position; when the isolation mechanism 100 is in the neutral state, the first interlocking member 1 moves to the first position of the isolation operation interlocking structure 11 to open the isolation closing operation hole 1021 and the isolation grounding operation hole 1022 respectively, as shown in FIG. Figure 2 When the isolation mechanism 100 is in the closed state, the first interlocking member 1 moves to the second position where the isolation operation interlocking structure 11 opens the isolation closing operation hole 1021 and blocks the isolation grounding operation hole 1022, as shown in FIG. Figure 3As shown; when the isolation mechanism 100 is in the grounding state, the first interlocking member 1 moves to the third position where the isolation operation interlocking structure 11 blocks the clutch operation hole and opens the isolation grounding operation hole 1022.

[0122] With such arrangement, the first interlocking member 1 can cooperate with the isolation operation structure 102 through the isolation operation interlocking structure 11 during horizontal sliding to interlock the grounding operation and the closing operation of the isolation mechanism 100, thereby avoiding the grounding operation of the isolation mechanism 100 when the isolation mechanism 100 is in the closed state, and avoiding the closing operation of the isolation mechanism 100 when the isolation mechanism 100 is in the grounded state.

[0123] In this embodiment, the first interlocking member 1 is connected to the isolation mechanism 100 through a second transmission mechanism 103. The connecting end of the second transmission mechanism 103 with the first interlocking member 1 is a transmission rod 1031 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.

[0124] like Figures 1 to 3 As shown, the first interlocking member 1 is in the first position, and the isolation operation interlocking structure 11 opens the isolation closing operation hole 1021 and the isolation grounding operation hole 1022 respectively. At this time, the operating handle can be inserted into the isolation closing operation hole 1021 and rotated in the first direction to close the isolating switch. The first interlocking member 1 is driven by the isolation mechanism 100 to move horizontally from the first position to the second position, and the isolation operation interlocking structure 11 opens the isolation closing operation hole 1021 and blocks the isolation grounding operation hole 1022; the isolation switch is reset to the open state by rotating in the isolation closing operation hole 1021 in the second direction opposite to the first direction, and the first interlocking member 1 moves horizontally from the second position to the first position;

[0125] Alternatively, when the first interlocking member 1 is in the first position, the operating handle is inserted into the isolation grounding operating hole 1022 and rotated in the third direction to perform a grounding operation on the isolating switch. The first interlocking member 1 is driven by the isolation mechanism 100 to move horizontally from the first position to the third position, and the isolation operation interlocking structure 11 blocks the clutch operating hole and opens the isolation grounding operating hole 1022; the first interlocking member 1 is inserted into the isolation grounding operating hole 1022 and rotated in a fourth direction opposite to the third direction to reset the isolating switch to the open state. The first interlocking member 1 moves horizontally from the third position to the first position.

[0126] Furthermore, if Figures 1 to 3 and Figure 5As shown, the isolation operation interlocking structure 11 includes an interlocking plate body 111 arranged opposite to the isolation panel 101, and an isolation closing operation avoidance groove 1111 and an isolation grounding operation avoidance groove 1112 arranged on the interlocking plate body 111 corresponding to the isolation closing operation hole 1021 and the isolation grounding operation hole 1022. The interlocking plate body 111 can move laterally along the isolation panel 101 between the first position and the second position, and between the first position and the third position; wherein, when the first interlocking member 1 is in the first position, the isolation closing operation avoidance groove 1111 overlaps with the isolation closing operation hole 1021 to open the isolation closing operation hole 1021, and the isolation grounding operation avoidance groove 1112 overlaps with the isolation grounding operation hole 1022 to open the isolation grounding operation hole 1022, as shown in FIG. Figure 2 As shown; when the first interlocking member 1 is in the second position, the isolation closing operation avoidance groove 1111 corresponds to the isolation closing operation hole 1021 and overlaps to open the isolation closing operation hole 1021, and the isolation grounding operation avoidance groove 1112 is staggered with the isolation grounding operation hole 1022 to cover the isolation grounding operation hole 1022, as shown Figure 3 As shown; when the first interlocking member 1 is in the third position, the isolation closing operation avoidance groove 1111 is staggered with the isolation closing operation hole 1021 to block the isolation closing operation hole 1021, and the isolation grounding operation avoidance groove 1112 is overlapped with the isolation grounding operation hole 1022 to open the isolation grounding operation hole 1022.

[0127] Alternatively, if Figure 5 As shown, the projection of the isolation closing operation hole 1021 on the interlocking plate 111 can fall into the isolation closing operation avoidance groove 1111; the projection of the isolation grounding operation hole 1022 on the interlocking plate 111 can fall into the isolation grounding operation avoidance groove 1112. Preferably, the isolation closing operation hole 1021 and the isolation grounding operation hole 1022 are both round holes; the isolation closing operation avoidance groove 1111 and the isolation grounding operation avoidance groove 1112 are both waist-shaped holes extending laterally.

[0128] Alternatively, if Figure 5 As shown, the interlocking plate 111 is provided with a first guide groove extending in the transverse direction, and the isolation panel 101 is fixedly provided with a first guide assembly suitable for slidingly cooperating with the first guide groove, suitable for guiding the sliding mounting portion by cooperating with the first guide groove; optionally, the first guide assembly includes at least two first mounting members spaced apart in the longitudinal direction. Preferably, the first mounting member is a screw or a bolt mounted on the isolation panel 101.

[0129] Alternatively, if Figure 2 , Figure 3 and Figure 5As shown, the first interlocking member 1 also includes a bending guide plate 12, which is fixedly arranged on the bottom edge of the interlocking plate body 111, and the bending guide plate 12 is extended along the length direction of the interlocking plate body 111, and the bending guide plate 12 has at least two bending portions, and one end of the second interlocking member 2 and the fourth interlocking member 4 are respectively abutted on the two bending portions of the bending guide plate 12, and the second interlocking member 2 and the fourth interlocking member 4 are suitable for moving up and down under the guidance of the bending portion of the bending guide plate 12 when the interlocking plate body 111 moves laterally.

[0130] Furthermore, if Figures 1 to 3 As shown, 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 breaker closing operation unit 211 and the circuit breaker opening operation unit 212; the circuit breaker crank arm 202 is rotatably arranged on the circuit breaker panel 201, and the circuit breaker crank arm 202 is respectively connected to the circuit breaker closing operation unit 211 and the circuit breaker opening operation unit 212 through a first transmission mechanism 203, and the circuit breaker crank arm 202 is suitable for forward rotation when the circuit breaker closing operation unit 211 generates a trigger operation, and reverse rotation when the circuit breaker opening operation unit 212 generates a trigger operation; when the circuit breaker crank arm 202 rotates forward or reversely, it can drive the second telescopic rod 32 to move downward or upward, so as to drive the isolation operation baffle 31 to move to cover or open the isolation operation structure 102.

[0131] Alternatively, if Figure 6 As shown, the second interlocking member 2 includes a first telescopic rod 21 and a circuit breaker closing stopper 22. The first telescopic rod 21 can be telescopically arranged on the circuit breaker panel 201 in the longitudinal direction, and the upper end of the first telescopic rod 21 is slidably matched with the top wall of the bending guide plate 12; the circuit breaker closing stopper 22 is fixedly connected to the lower end of the first telescopic rod 21. The first telescopic rod 21 is suitable for telescopic movement up and down driven by the bending guide plate 12, and can lock or release the circuit breaker closing operation unit 211 by driving the circuit breaker closing stopper 22 to move.

[0132] Furthermore, if Figure 6 As shown, the circuit breaker closing operation unit 211 includes a circuit breaker closing button 2111, which is suitable for realizing the closing operation of the circuit breaker by pressing operation, and a closing stop fitting 2112 suitable for limiting cooperation with the circuit breaker closing stop 22 is fixedly installed on the operating shaft of the circuit breaker closing button 2111; when the circuit breaker closing stop 22 is driven up and down by the first telescopic rod 21, the circuit breaker closing stop 22 can resist and cooperate with or disengage from the closing stop fitting 2112 to limit or allow the circuit breaker closing button 2111 to move in the pressing direction.

[0133] Preferably, in this embodiment, if Figure 2 , Figure 3 and Figure 6 As shown, the upper end of the first telescopic rod 21 has a high position and two low positions under the resistance of the bending guide plate 12. When the isolation structure is in the neutral opening state, the first interlocking member 1 moves to the first position of the isolation operation interlocking structure 11 to open the isolation closing operation hole 1021 and the isolation grounding operation hole 1022 respectively. At this time, the first telescopic rod 21 is in a high position under the guidance of the bending guide plate 12, and drives the circuit breaker closing stopper 22 to resist and cooperate with the closing stopper mating member 2112 to limit the movement of the circuit breaker closing button 2111 along the pressing direction, so that the circuit breaker cannot be manually closed. When the isolation structure is in the closed or grounded state, the first interlocking member 1 moves horizontally to the second position or the third position accordingly. At this time, the first telescopic rod 21 moves downward to the low position under the guidance of the bending guide plate 12, and drives the circuit breaker closing stop 22 to disengage from the abutment with the closing stop mating member 2112, allowing the circuit breaker closing button 2111 to move in the pressing direction, thereby enabling the circuit breaker to be manually closed.

[0134] Alternatively, if Figure 2 and Figure 6 As shown, the second telescopic rod 32 is telescopically arranged on the circuit breaker panel 201 in the longitudinal direction, and the second telescopic rod 32 is subjected to a biasing force tending to move downward; the third interlocking member 3 also includes a first linkage matching portion 33 installed on the second telescopic rod 32, and the bottom wall of the first linkage matching portion 33 can be matched with the circuit breaker crank arm 202. When the circuit breaker is opened, the circuit breaker crank arm 202 rotates in the opposite direction and drives the first linkage matching portion 33 matched with it to move upward, and drives the isolation operation baffle 31 to move upward to realize the isolation operation baffle 31 to open the isolation operation structure 102; when the circuit breaker is closed, the circuit breaker crank arm 202 can release the resistance to the bottom wall of the first linkage matching portion 33 when rotating forward, and the isolation operation baffle 31 can be driven by the second telescopic rod 32 to reset downward to cover the isolation operation structure 102, and at this time, the isolation mechanism 100 can no longer be closed, opened or grounded.

[0135] Furthermore, if Figure 2 , Figure 6 and Figure 7As shown, an elastic reset member is provided on the second telescopic rod 32, and the elastic reset member is suitable for applying a biasing force tending to move downward to the second telescopic rod 32; optionally, the first linkage matching portion 33 is a bent plate, one end of the first linkage matching portion 33 is installed and connected to the isolation operation baffle 31, and the other end extends in a direction close to the circuit breaker crank arm 202 for matching with the circuit breaker crank arm 202, and the upper end of the second telescopic rod 32 is fixedly mounted on the first linkage matching portion 33 near the middle position.

[0136] Furthermore, if Figure 2 , Figure 3 and Figure 5 As shown, the isolation operation baffle 31 includes an isolation closing operation shielding portion 311 and an isolation grounding operation shielding portion 312 which are spaced apart from each other in the upper and lower parts. The isolation closing operation shielding portion 311 can overlap with the isolation closing operation hole 1021 to cover the isolation closing operation hole 1021, and the isolation grounding operation shielding portion 312 can overlap with the isolation grounding operation hole 1022 to cover the isolation grounding operation hole 1022; an avoidance slot is formed on the isolation operation baffle 31, and the avoidance slot is suitable for overlapping 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 baffle 31 moves up and down.

[0137] Furthermore, if Figure 5 As shown, the isolation operation baffle 31 also includes a sliding mounting portion that is slidably limited on the isolation panel 101 along the longitudinal direction, and each end of the isolation closing operation shielding portion 311 and the isolation grounding operation shielding portion 312 is integrally connected to the sliding mounting portion, and the sliding mounting portion is provided with a second guide groove extending along the longitudinal direction, and the isolation panel 101 is fixedly provided with a second guide assembly suitable for slidingly cooperating with the second guide groove, which is suitable for guiding and limiting the sliding mounting portion by cooperating with the second guide groove. Optionally, the second guide assembly includes at least two second mounting members spaced apart in the longitudinal direction, and preferably, the second mounting member is a screw or bolt installed on the isolation panel 101.

[0138] Alternatively, if Figure 2 , Figure 3 and Figure 7As shown, the fourth interlocking member 4 has a second interlocking fitting portion 41 which is suitable for interlocking with the circuit breaker when the isolation mechanism 100 is in the grounded state. The second interlocking fitting portion 41 can be driven by the fourth interlocking member 4 to move downward or upward to enter or escape from the action path of the circuit breaker crank arm 202; when the second interlocking fitting portion 41 moves downward and enters the action path of the circuit breaker crank arm 202, the circuit breaker crank arm 202 can press down the second interlocking fitting portion 41 when rotating forward, so as to drive the fourth interlocking member 4 to continue to move downward to trigger the first door lock tongue assembly 61 to enter the retracted unlocked state.

[0139] It should be noted that, in this embodiment, the forward rotation direction of the circuit breaker arm 202 is Figure 1 and Figure 2 The circuit breaker arm 202 rotates counterclockwise, and the reverse rotation direction is clockwise.

[0140] Alternatively, if Figure 7 As shown, the action end of the circuit breaker crank arm 202 that resists the bottom wall of the first linkage matching part 33 is a pin; when the second linkage matching part 41 is driven by the fourth interlocking member 4 to move downward and enter the action path of the circuit breaker crank arm 202, the circuit breaker crank arm 202 can press down the second linkage matching part 41 through the pin.

[0141] Alternatively, if Figure 2 and Figure 7 As shown, the fourth interlocking member 4 includes a third telescopic rod 42 which is telescopically arranged on the circuit breaker panel 201 in the longitudinal direction, and the third telescopic rod 42 is subjected to a biasing force tending to move upward. The upper end of the third telescopic rod 42 is stopped on the bottom wall of the bending guide plate 12, and the lower end is movably connected with the first door lock tongue assembly 61; the second linkage matching portion 41 is fixedly mounted on the third telescopic rod 42, and the third telescopic rod 42 is suitable for moving downward under the guidance of the bending guide plate 12 when the first interlocking member 1 moves horizontally, so as to drive the second linkage matching portion 41 to enter the action path of the circuit breaker crank arm 202, and is suitable for moving upward when resetting to drive the second linkage matching portion 41 to leave the action path of the circuit breaker crank arm 202. Optionally, an elastic member suitable for applying an upward biasing force to the third telescopic rod 42 is provided on the third telescopic rod 42; preferably, the elastic member is a compression spring.

[0142] Preferably, if Figure 2 and Figure 7As shown, in this embodiment, the upper end of the third telescopic rod 42 abuts against the bottom wall of the bending guide plate 12 under the action of the upward biasing force, and has two high positions and one low position. When the isolation structure is in the neutral opening or closing state, the first interlocking member 1 moves horizontally to the first position or the second position accordingly. At this time, the third telescopic rod 42 is in the high position under the guidance of the bending guide plate 12. At this time, the second linkage matching portion 41 is not in the action path of the circuit breaker crank arm 202. The circuit breaker crank arm 202 cannot drive the fourth interlocking member 4 to move when it rotates forward; when the isolation structure is in the grounding state, the first interlocking member 1 moves horizontally to the third position accordingly. At this time, the third telescopic rod 42 moves downward to the low position under the guidance of the bending guide plate 12. At this time, the second linkage matching portion 41 enters the action path of the circuit breaker crank arm 202. The circuit breaker crank arm 202 can press down the second linkage matching portion 41 when it rotates forward, and by driving the fourth interlocking member 4 to move downward, the first door lock tongue assembly 61 is driven to retract to unlock the cabinet door 300. At this time, the cabinet door 300 can be opened.

[0143] Alternatively, if Figure 2 , Figure 6 and Figure 7 As shown, the fifth interlocking member 5 includes a fourth telescopic rod 51 telescopically arranged on the circuit breaker panel 201 in the longitudinal direction, the fourth telescopic rod 51 is subjected to a biasing force tending to move upward, and the lower end of the fourth telescopic rod 51 is movably connected to the second door lock tongue assembly 62; the circuit breaker stopper 52 is fixedly connected to the upper end of the fourth telescopic rod 51, and is used to lock or release the circuit breaker closing operation unit 211; the second door lock tongue assembly 62 is suitable for driving the fourth telescopic rod 51 to move downward when the cabinet door 300 is opened, and driving the circuit breaker stopper 52 to move downward to the locking position of the circuit breaker opening operation unit 212; the second door lock tongue assembly 62 is also suitable for the fourth telescopic rod 51 to reset upward to the unlocking position of the circuit breaker opening operation unit 212.

[0144] Alternatively, if Figure 4 and Figure 6 As shown, the circuit breaker and opening operation unit 212 includes a circuit breaker and opening button 2121 suitable for realizing the opening operation of the circuit breaker by pressing operation, and a circuit breaker and opening stop fitting 2122 suitable for limiting cooperation with the circuit breaker and opening stop fitting 52 is fixedly installed on the operating shaft of the circuit breaker and opening button 2121; when the circuit breaker and opening stop fitting 52 is driven up and down by the fourth telescopic rod 51, the circuit breaker and opening stop fitting 52 can resist and cooperate with or disengage from the circuit breaker and opening stop fitting 2122 to limit or allow the circuit breaker and opening button 2121 to move in the pressing direction.

[0145] Alternatively, if Figure 2 , Figure 8 and Fig. 9 As shown, the first door lock tongue assembly 61 and the second door lock tongue assembly 62 have the same structure. The first door lock tongue assembly 61 includes a first linkage rod 611 and a first tongue 612. One end of the first linkage rod 611 is connected to the bottom end of the third telescopic rod 42, and the other end is hinged to the first tongue 612. The first tongue 612 is telescopically arranged on the cable chamber cover 400. The cable chamber cabinet door 300 is provided with a lock hole 301 that matches the first tongue 612. The first tongue 612 extends out of the cable chamber cover 400 and extends into the lock hole 301 on the cable chamber cabinet door 300 to achieve plugging and locking of the cabinet door 300. The second door lock tongue assembly 62 includes a second linkage rod 621 and a second tongue 622. One end of the second linkage rod 621 is connected to the bottom end of the fourth telescopic rod 51, and the other end is hinged to the second tongue 622. The second tongue 622 is telescopically arranged on the cable chamber cover 400. Preferably, compression springs are provided on the first plug-in tongue 612 and the second plug-in tongue 622 , which are suitable for applying a biasing force on the plug-in tongues tending to extend out of the cable chamber cover 400 .

[0146] With such arrangement, the third telescopic rod 42 can drive the first connecting rod 611 to rotate when moving downward, so as to drive the first plug tongue 612 hinged to the first connecting rod 611 to retract, thereby unlocking the cabinet door 300. At this time, the cabinet door 300 can be opened. To ensure the safety of personnel, the interior of the cable room cabinet needs to be in an effective grounding state to effectively discharge the switch cabinet and prevent the induced electricity and residual high voltage electricity in the cable room from causing electric shock to personnel, thereby ensuring the safety of the operator. If the cabinet door 300 is further opened, the second plug tongue 622 that is elastically abutted against the cabinet door 300 is extended out because it is no longer restricted by the cabinet door 300, and drives the second connecting rod to rotate, so as to drive the fourth telescopic rod 51 to move upward to lock the circuit breaker opening and closing operation unit 212 of the circuit breaker, so as to prohibit the opening operation of the circuit breaker, and avoid the risk of electric shock to the operator due to the erroneous opening operation of the circuit breaker when the isolation mechanism 100 is in the grounded state; until the cabinet door 300 is closed, the second plug tongue 622 is restricted by the cabinet door 300 and retracts, and drives the fourth telescopic rod 51 to move downward to release the circuit breaker opening and closing operation unit 212 of the circuit breaker, so as to allow the opening operation of the circuit breaker.

[0147] Alternatively, if Figure 2 As shown, a guide mounting plate 204 is fixedly mounted on the inner wall of the circuit breaker panel 201, and a mounting through hole is provided on the guide mounting plate 204 for the first telescopic rod 21, the second telescopic rod 31, the third telescopic rod 41, and the fourth telescopic rod 51 to pass through. 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.

[0148] Alternatively, if Figure 4As shown, a circuit breaker status indication window 205 for indicating the circuit breaker status is provided on the outer wall of the circuit breaker panel 201, including an energy storage indication window, an opening and closing indication window and a counter window; a manual energy storage operation hole 206 is also provided on the outer wall of the circuit breaker panel 201, and the pressing ends of the circuit breaker closing button 2111 and the circuit breaker opening button 2121 are both provided on the outer wall of the circuit breaker panel 201.

[0149] Alternatively, if Figure 4 As shown, an isolation status indication window 104 for displaying the three-station status of the isolation structure is also provided on the outer wall of the isolation panel 101 .

[0150] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An interlocking device for upper isolation and lower circuit breaker, characterized in that: The invention comprises an isolation mechanism (100), a circuit breaker and an interlocking mechanism which is arranged between the isolation mechanism (100) and the circuit breaker, wherein the interlocking mechanism comprises: a first interlocking member (1) slidably arranged on an isolation panel (101) of the isolation mechanism (100); the isolation panel (101) being provided with an isolation operation structure (102) for grounding and / or closing operations; the first interlocking member (1) comprising an isolation operation interlocking structure (11); the isolation operation interlocking structure (11) being adapted to cooperate with the isolation operation structure (102) during movement of the first interlocking member (1) to achieve interlocking of the grounding operation and the closing operation of the isolation mechanism (100); A second interlocking member (2), one end of which is linked with the first interlocking member (1) in an up-and-down manner, and the other end of which is suitable for locking or releasing the circuit breaker closing and closing operation unit (211) during the up-and-down movement of the first interlocking member (1), so as to prohibit or allow the closing operation of the circuit breaker; A third interlocking member (3), comprising an isolation operation baffle (31) provided between the isolation panel (101) and the first interlocking member (1), and a second telescopic rod (32) provided between the isolation operation baffle (31) and the circuit breaker, the second telescopic rod (32) being in linkage with the circuit breaker and being adapted to move up and down with the circuit breaker when the circuit breaker performs a closing operation or an opening operation, and driving the isolation operation baffle (31) to move so as to open or cover the isolation operation structure (102); A fourth interlocking member (4), one end of which is linked with the first interlocking member (1) in an up-and-down manner, and the other end of which is provided with a first door lock tongue assembly (61) adapted to be plugged into and engaged with the cabinet door, the first door lock tongue assembly (61) having a locked state in which it is extended to lock the cabinet door in a normal state, and an unlocked state in which it is retracted when the isolation mechanism (100) is grounded and the circuit breaker is closed; A fifth interlocking member (5), one end of which is provided with a second door lock tongue assembly (62) adapted to be retractably elastically abutted against the cabinet door, and the other end of which is adapted to lock or release the circuit breaker opening and closing operation unit (212) during the telescopic movement of the second door lock tongue assembly (62) to prohibit or allow the opening operation of the circuit breaker; The isolation operation structure (102) comprises an isolation closing operation hole (1021) and an isolation grounding operation hole (1022) which are arranged on the isolation panel (101) at intervals and in a staggered manner. The first interlocking member (1) is horizontally slidably limited on the isolation panel (101) and cooperates with the three-position state of the isolation mechanism (100). The first interlocking member (1) can cooperate with the isolation operation structure (102) through the isolation operation interlocking structure (11) during the horizontal sliding process to achieve interlocking of the grounding operation and the closing operation of the isolation mechanism (100). The first interlocking member (1) has three working positions, wherein the first position is located between the second position and the third position; When the isolation mechanism (100) is in a neutral state, the first interlocking member (1) moves to a first position where the isolation operation interlocking structure (11) respectively opens the isolation closing operation hole (1021) and the isolation grounding operation hole (1022); When the isolation mechanism (100) is in a closed state, the first interlocking member (1) moves to a second position in which the isolation operation interlocking structure (11) opens the isolation closing operation hole (1021) and blocks the isolation grounding operation hole (1022); When the isolation mechanism (100) is in a grounding state, the first interlocking member (1) moves to a third position in which the isolation operation interlocking structure (11) blocks the clutch operation hole and opens the isolation grounding operation hole (1022); The isolation operation interlocking structure (11) comprises an interlocking plate body (111) arranged opposite to the isolation panel (101), and an isolation closing operation avoidance groove (1111) and an isolation grounding operation avoidance groove (1112) arranged on the interlocking plate body (111) corresponding to the isolation closing operation hole (1021) and the isolation grounding operation hole (1022); the interlocking plate body (111) can move laterally along the isolation panel (101) between a first position and a second position, and between the first position and a third position; Wherein, when the first interlocking member (1) is in the first position, the isolation closing operation avoidance groove (1111) overlaps with the isolation closing operation hole (1021) to open the isolation closing operation hole (1021), and the isolation grounding operation avoidance groove (1112) overlaps with the isolation grounding operation hole (1022) to open the isolation grounding operation hole (1022); When the first interlocking member (1) is in the second position, the isolation closing operation avoidance groove (1111) and the isolation closing operation hole (1021) overlap correspondingly to open the isolation closing operation hole (1021), and the isolation grounding operation avoidance groove (1112) and the isolation grounding operation hole (1022) are staggered to cover the isolation grounding operation hole (1022); When the first interlocking member (1) is in the third position, the isolation closing operation avoidance groove (1111) is staggered with the isolation closing operation hole (1021) to shield the isolation closing operation hole (1021), and the isolation grounding operation avoidance groove (1112) is correspondingly overlapped with the isolation grounding operation hole (1022) to open the isolation grounding operation hole (1022); The first interlocking member (1) further comprises: a bending guide plate (12) fixedly arranged on the bottom edge of the interlocking plate body (111), the bending guide plate (12) extending along the length direction of the interlocking plate body (111), the bending guide plate (12) having at least two bending portions, one end of the second interlocking member (2) and the fourth interlocking member (4) respectively abutting against the two bending portions of the bending guide plate (12), the second interlocking member (2) and the fourth interlocking member (4) being adapted to move up and down under the guidance of the bending portions of the bending guide plate (12) when the interlocking plate body (111) moves laterally; The fifth interlocking member (5) comprises: A fourth telescopic rod (51) is telescopically arranged on the circuit breaker panel (201) in a longitudinal direction, the fourth telescopic rod (51) is subjected to a biasing force tending to move upward, and the lower end is movably connected to the second door lock tongue assembly (62); A circuit breaker and opening stopper (52), fixedly connected to the upper end of the fourth telescopic rod (51), and used for locking or releasing the circuit breaker and closing operating unit (211); The second door lock tongue assembly (62) is suitable for driving the fourth telescopic rod (51) to move downward when the cabinet door is opened, thereby driving the circuit breaker stopper (52) to move downward to a locking position for the circuit breaker operating unit (212); and the second door lock tongue assembly (62) is suitable for returning to a position to unlock the circuit breaker operating unit (212) when the fourth telescopic rod (51) moves upward.

2. The interlocking device of upper isolation and lower circuit breaker according to claim 1, characterized in that: The projection of the isolating and closing operation hole (1021) on the interlocking plate (111) can fall into the isolating and closing operation avoidance groove (1111); and / or, The projection of the isolation grounding operation hole (1022) on the interlocking plate body (111) can fall into the isolation grounding operation avoidance groove (1112).

3. The interlocking device of upper isolation and lower circuit breaker according to claim 2, characterized in that: The isolation closing operation hole (1021) and the isolation grounding operation hole (1022) are both round holes; The isolation closing operation avoidance groove (1111) and the isolation grounding operation avoidance groove (1112) are both waist-shaped holes extending laterally.

4. The interlocking device of upper isolation and lower circuit breaker according to claim 1, characterized in that: The circuit breaker comprises: A circuit breaker panel (201) on which the circuit breaker closing operation unit (211) and the circuit breaker opening operation unit (212) are arranged; A circuit breaker crank arm (202) is rotatably arranged on the circuit breaker panel (201); the circuit breaker crank arm (202) is transmission-connected to the circuit breaker closing operation unit (211) and the circuit breaker opening operation unit (212) respectively through a first transmission mechanism (203); the circuit breaker crank arm (202) is adapted to rotate forward when the circuit breaker closing operation unit (211) generates a trigger operation, and to rotate reversely when the circuit breaker opening operation unit (212) generates a trigger operation; When the circuit breaker crank arm (202) rotates forward or backward, it can drive the second telescopic rod (32) to move downward or upward, thereby driving the isolation operation baffle (31) to move to cover or open the isolation operation structure (102).

5. The interlocking device of upper isolation and lower circuit breaker according to claim 4, characterized in that: The second interlocking member (2) comprises: A first telescopic rod (21) is arranged on the circuit breaker panel (201) in a telescopic manner in the longitudinal direction, and the upper end of the first telescopic rod (21) is slidably engaged with the top wall of the bending guide plate (12); A circuit breaker closing stopper (22) is fixedly connected to the lower end of the first telescopic rod (21); the first telescopic rod (21) is adapted to move upward and downward under the drive of the bending guide plate (12), and can lock or release the circuit breaker closing operating unit (211) by driving the circuit breaker closing stopper (22) to move.

6. The interlocking device of upper isolation and lower circuit breaker according to claim 5, characterized in that: The circuit breaker and closing operation unit (211) comprises: A circuit breaker closing button (2111) adapted to realize a closing operation of the circuit breaker by a pressing operation, wherein a closing stop fitting member (2112) adapted to limitably cooperate with the circuit breaker closing stop fitting member (22) is fixedly mounted on an operating shaft of the circuit breaker closing button (2111); During the up and down movement of the circuit breaker closing stopper (22) driven by the first telescopic rod (21), the circuit breaker closing stopper (22) can resist or disengage from the closing stopper matching piece (2112) to limit or allow the circuit breaker closing button (2111) to move in the pressing direction.

7. The interlocking device of upper isolation and lower circuit breaker according to claim 4, characterized in that: The second telescopic rod (32) is telescopically arranged on the circuit breaker panel (201) in a longitudinal direction, and the second telescopic rod (32) is subjected to a biasing force tending to move downward; the third interlocking member (3) further comprises: The first linkage matching portion (33) is mounted on the second telescopic rod (32); the bottom wall of the first linkage matching portion (33) can be matched with the circuit breaker crank arm (202); the first linkage matching portion (33) is suitable for moving upwards under the drive of the circuit breaker crank arm (202) to rotate in the reverse direction, and driving the isolation operation baffle (31) to move upwards so that the isolation operation baffle (31) opens the isolation operation structure (102); the circuit breaker crank arm (202) can release the resistance to the bottom wall of the first linkage matching portion (33) when rotating in the forward direction, and the isolation operation baffle (31) can be driven by the second telescopic rod (32) to reset downwards to cover the isolation operation structure (102).

8. The interlocking device of upper isolation and lower circuit breaker according to claim 7, characterized in that: The second telescopic rod (32) is provided with an elastic reset member, the elastic reset member being suitable for applying a biasing force tending to move downward to the second telescopic rod (32); and / or, The first linkage matching portion (33) is a bent plate, one end of the first linkage matching portion (33) is mounted and connected to the isolation operation baffle (31), and the other end extends in a direction close to the circuit breaker crank arm (202) to match the circuit breaker crank arm (202), and the upper end of the second telescopic rod (32) is fixedly mounted on the first linkage matching portion (33) near the middle.

9. The interlocking device of upper isolation and lower circuit breaker according to claim 7 or 8, characterized in that: The isolation operation baffle (31) comprises an isolation closing operation shielding portion (311) and an isolation grounding operation shielding portion (312) which are spaced apart from each other in the upper and lower parts; the isolation closing operation shielding portion (311) can overlap with the isolation closing operation hole (1021) to shield the isolation closing operation hole (1021); and the isolation grounding operation shielding portion (312) can overlap with the isolation grounding operation hole (1022) to shield the isolation grounding operation hole (1022); An avoidance slot is formed on the isolation operation baffle (31), and the avoidance slot is suitable for correspondingly overlapping 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).

10. The interlocking device of upper isolation and lower circuit breaker according to claim 4, characterized in that: The fourth interlocking member (4) has a second interlocking matching portion (41) adapted to be interlockingly matched with the circuit breaker when the isolation mechanism (100) is in a grounded state, and the second interlocking matching portion (41) can be driven by the fourth interlocking member (4) to move downward or upward to enter or leave the action path of the circuit breaker crank arm (202); When the second linkage matching portion (41) moves downward and enters the action path of the circuit breaker crank arm (202), the circuit breaker crank arm (202) can press down the second linkage matching portion (41) when rotating in the forward direction, so as to drive the fourth interlocking member (4) to continue to move downward, triggering the first door lock tongue assembly (61) to enter a retracted unlocked state.

11. The interlocking device of upper isolation and lower circuit breaker according to claim 10, characterized in that: The fourth interlocking member (4) comprises: A third telescopic rod (42) is telescopically arranged on the circuit breaker panel (201) in a 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 to the first door lock tongue assembly (61); The second linkage matching portion (41) is fixedly mounted on the third telescopic rod (42); the third telescopic rod (42) is adapted to move downwards under the guidance of the bending guide plate (12) when the first interlocking member (1) moves laterally, so as to drive the second linkage matching portion (41) to enter the action path of the circuit breaker crank arm (202), and is adapted to move upwards when resetting, so as to drive the second linkage matching portion (41) to leave the action path of the circuit breaker crank arm (202).

12. The interlocking device of upper isolation and lower circuit breaker according to claim 1, characterized in that: The circuit breaker and opening operation unit (212) comprises: A circuit breaker opening button (2121) is adapted to realize the opening operation of the circuit breaker by pressing, and a circuit breaker opening stop fitting member (2122) adapted to cooperate with the circuit breaker opening stop member (52) in a limiting manner is fixedly mounted on the operating shaft of the circuit breaker opening button (2121); When the circuit breaker and opening stopper (52) is driven by the fourth telescopic rod (51) to move up and down, the circuit breaker and opening stopper (52) can resist or disengage from the opening stopper matching piece (2122) to limit or allow the circuit breaker and opening button (2121) to move in the pressing direction.

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