CN215417982U - Interlocking mechanism for circuit breaker operating mechanism, three-position switch and ring main unit - Google Patents
Interlocking mechanism for circuit breaker operating mechanism, three-position switch and ring main unit Download PDFInfo
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- CN215417982U CN215417982U CN202120956685.2U CN202120956685U CN215417982U CN 215417982 U CN215417982 U CN 215417982U CN 202120956685 U CN202120956685 U CN 202120956685U CN 215417982 U CN215417982 U CN 215417982U
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Abstract
The utility model discloses an interlocking mechanism for a circuit breaker operating mechanism, a three-station switch and a ring main unit, which comprises a first interlocking mechanism used between a main shaft of the circuit breaker operating mechanism and a baffle mechanism of the three-station switch, a second interlocking mechanism used between the main shaft of the circuit breaker operating mechanism and a cabinet door of the ring main unit, a third interlocking mechanism used between a separating operation shaft of the circuit breaker and the cabinet door of the ring main unit, and a fourth interlocking mechanism used between the main shaft of the three-station switch and the cabinet door of the ring main unit.
Description
Technical Field
The utility model relates to the technical field of circuit breaker switches, in particular to an interlocking mechanism for a circuit breaker operating mechanism, a three-position switch and a ring main unit.
Background
In the electric power transmission and distribution system, a three-position disconnecting switch in high-voltage switch equipment and an operating mechanism of a circuit breaker are frequently matched for use, wherein the three-position disconnecting switch and the operating mechanism of the circuit breaker must be operated according to a fixed operation sequence to prevent misoperation and ensure the safety of an operation process. In addition, in order to ensure the safety of operation, the ring main unit in the circuit breaker switch cabinet needs to be opened, the circuit breaker and the three-station disconnecting switch need to be firstly adjusted to corresponding modes, otherwise, the ring main unit is also dangerous to open. Therefore, the interlocking mechanism between the circuit breaker operating mechanism and the three-position switch and the ring main unit needs to be designed.
In the prior art, in a circuit breaker switch cabinet, a circuit breaker is generally arranged at the upper part, a three-position switch is arranged at the middle part, and a ring main unit is arranged at the lower part, and the five-prevention union of the conventional circuit breaker switch cabinet generally comprises the operation of the three-position switch under the switching-on state of the circuit breaker; the three-position switch cannot perform the closing operation of the circuit breaker in an isolated or grounded state; when the three-position switch is in a grounding state, the isolating switch cannot be operated; when the three-station switch is in an isolation or closing state, the cabinet door of the ring main unit cannot be opened, and only when the three-station switch is in a grounding state, the cabinet door of the ring main unit can be opened; after the cabinet door of looped netowrk cabinet is opened, unable three station switch of operation and circuit breaker operating device.
In the prior art, the arrangement of the five-prevention interlocking mechanism is limited by the position relation of the assembly of the circuit breaker operating mechanism, the three-station module and the ring main unit. Therefore, the existing interlocking mechanism cannot be applied to the condition that the three-station module is arranged on the upper part of the breaker switch cabinet, the breaker operating mechanism is arranged in the middle of the switch cabinet, and the ring main unit is arranged on the lower part of the switch cabinet. Furthermore, there are differences in the interlocking logic of different circuit breaker switchgear cabinets, so that corresponding interlocking mechanisms need to be designed according to the interlocking logic of the circuit breaker switchgear cabinets.
Disclosure of Invention
The utility model aims to provide an interlocking mechanism for a circuit breaker operating mechanism, a three-position switch and a ring main unit, aiming at the problems that the existing interlocking mechanism cannot be suitable and the interlocking logic of the interlocking mechanism of the existing circuit breaker cannot meet the design requirement of the circuit breaker when the three-position switch is positioned above the circuit breaker operating mechanism.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a interlocking device for circuit breaker operating device and three-station switch and looped netowrk cabinet, its characterized in that: the interlocking mechanism comprises a first interlocking mechanism used between a main shaft of the circuit breaker operating mechanism and a three-position switch baffle mechanism, a second interlocking mechanism used between the main shaft of the circuit breaker operating mechanism and a cabinet door of a ring main unit, a third interlocking mechanism used between a breaker opening operating shaft and the cabinet door of the ring main unit, and a fourth interlocking mechanism used between the main shaft of the three-position switch and the cabinet door of the ring main unit;
the upper frame of the cabinet door of the ring main unit is provided with a plug pin assembly, the plug pin assembly comprises a plug pin, a rotating plate, a rotating shaft, a compression spring and a limiting rod, the rotating plate is assembled on an assembling plate of the circuit breaker operating mechanism through the rotating shaft, the rotating shaft penetrates through the middle of the rotating plate, the plug pin is connected to the lower portion of the rotating plate, the plug pin can extend and retract towards the cabinet door of the ring main unit relative to the rotating plate, a jack corresponding to the plug pin is arranged on the upper frame of the cabinet door of the ring main unit, the compression spring is sleeved on the plug pin to provide force far away from the cabinet door of the ring main unit for the plug pin, and the limiting rod is arranged on the upper portion of the rotating plate;
the first interlocking mechanism comprises a crank arm, a connecting rod, a first cam and a first top plate, the crank arm is fixedly connected to a main shaft of the circuit breaker operating mechanism, one end of the connecting rod is connected with the crank arm, the other end of the connecting rod is connected with the first cam, an upper bulge and a lower bulge are arranged on the first cam, the first top plate is arranged above the first cam, the upper bulge on the first cam can push the first top plate to move upwards, a clamping groove for limiting the left and right movement of a middle sliding baffle of the three-position switch baffle mechanism is arranged at the top of the first top plate, and when the first top plate moves upwards, the clamping groove is combined with a sliding block on the middle sliding baffle of the three-position switch baffle mechanism to limit the left and right movement of the middle sliding baffle;
the second interlocking mechanism comprises a second top plate, a reset spring and a spring fixing column, the second top plate is arranged below the first cam, when the first cam rotates, a lower protruding portion on the first cam pushes the second top plate to move downwards, the upper end of the reset spring is fixed on an assembling plate of the circuit breaker operating mechanism through the spring fixing column, the lower end of the reset spring is fixedly connected with the second top plate to provide upward reset pulling force for the second top plate, when the second top plate moves downwards, a baffle plate is arranged at the lower end of the second top plate, the baffle plate can move to the front side of the upper end portion of a rotating plate of the bolt assembly to limit the rotation of the rotating plate, so that the bolt is limited to contract towards the direction far away from the cabinet door of the ring main unit, and the bolt is enabled to be inserted into a positioning hole in an upper frame of the cabinet door of the ring main unit;
the third interlocking mechanism comprises a limiting plate, a reset spring and a spring connecting column, the upper end of the limiting plate extends to the side of an opening operation shaft of the circuit breaker operation mechanism, a limiting block is fixedly connected to the opening operation shaft, the limiting block rotates along with the opening operation shaft when the opening operation shaft rotates, after the limiting plate moves upwards, the upper end of the limiting plate and the limiting block form limiting, the upper end of the reset spring is fixed on an assembly plate of the circuit breaker operation mechanism through the spring connecting column, the lower end of the reset spring is fixedly connected with the limiting plate to provide upward tension for the limiting plate, the lower end of the limiting plate extends to the upper frame of a cabinet door of the ring main unit, a socket is arranged on the upper frame of the cabinet door of the ring main unit, a plug corresponding to the socket is arranged at the lower end of the limiting plate, when the ring main unit is closed, the plug of the limiting plate is inserted into the socket on the cabinet door of the ring main unit, then the cabinet door of the ring main unit moves downwards to complete closing, the limiting plate moves downwards, and the upper end part of the limiting plate is far away from the limiting block on the brake-separating operation shaft;
the fourth interlocking mechanism comprises a second cam, a third top plate, a reset spring and a spring connecting column, the second cam is arranged on a three-station switch main shaft, the upper end of the third top plate is located below the second cam, when the second cam rotates, the protruding portion on the second cam can push the third top plate to move downwards, the lower end of the third top plate is located above an upper frame of a cabinet door of the ring main unit, the lower end of the third top plate is provided with a limit rod matched with a limit rod of the bolt mechanism, when the third top plate descends, the limit rod of the bolt component can be limited, rotation of the rotating plate is limited, and then the bolt is limited to shrink towards the direction of the cabinet door far away from the ring main unit, and the bolt is enabled to be kept inserted into a positioning hole in the upper frame of the cabinet door of the ring main unit.
The circuit breaker operating mechanism comprises a first top plate, a second top plate, a third top plate, a fixing column, a third top plate, a clamping groove and a fixing column, wherein the first top plate comprises an upper top plate and a lower top plate, the upper top plate and the lower top plate are respectively provided with a long hole, the upper top plate and the lower top plate are fixed through the fixing column, the fixing column penetrates through the long hole to assemble the upper top plate on an assembling plate of the three-position switch, the lower top plate is assembled on the assembling plate of the circuit breaker operating mechanism through the fixing column, a bevel face matched with the upper top plate is arranged between the lower top plate and the upper top plate, the upper top plate and the lower top plate transmit thrust through the bevel, the lower end face of the lower top plate is provided with a bevel face, the bevel face is arranged above a first cam, the first top plate is pushed to move upwards through the bevel face when the first cam rotates, and the clamping groove is arranged at the upper end portion of the upper top plate.
A further scheme is, the third roof include the upper portion roof, middle part roof and lower part roof, the upper portion roof, all be equipped with the assembly slot hole on middle part roof and the lower part roof, the upper portion roof passes through the fixed column assembly on the assembly panel of three-station switch, middle part roof and lower part roof pass through the fixed column assembly on circuit breaker operating device's assembly panel, fixed column and assembly slot hole sliding fit, between upper portion roof and the middle part roof, be equipped with the dog-ear face that is used for transmitting power between middle part roof and the lower part roof respectively, the upper end at the upper portion roof is equipped with dog-ear face, this dog-ear face is located the below of second cam, the third roof is moved through this dog-ear face top when second cam rotates.
The utility model provides a three station switch baffle mechanism include front panel, middle slide damper and after-fixing board, front panel and back panel fixed connection, middle slide damper can be relative front panel and back panel horizontal slip, all be equipped with isolation operation hole and the ground connection operation hole that corresponds with three station switch's isolation operation axle and ground connection operation axle on front panel and back panel, be equipped with the through-hole that corresponds with isolation operation hole and ground connection operation hole on the middle slide damper, when the through-hole on the middle slide damper aligns with isolation operation hole, ground connection operation hole is blockked, when the through-hole on the middle slide damper aligns with ground connection operation hole, isolation operation hole is blockked.
A further scheme is, the after-fixing board on be equipped with two sets of at least horizontal slot hole, be equipped with the slider that corresponds with horizontal slot hole on middle slide damper, make middle slide damper can relative after-fixing board horizontal slip, one of them slider with can control spacingly to middle slide damper after the draw-in groove at first roof top combines, middle slide damper's middle part is equipped with dials the board, all be equipped with on front panel and after-fixing board with dial the long through hole that the board corresponds, the rear end of dialling the board extends to the rear side of after-fixing board, be equipped with the torsional spring that resets with the position that the board corresponds on the after-fixing board, the driving lever and the group board fixed connection of torsional spring that resets, make and dial the board and stop the intermediate position at long through hole, when dialling the board and stop at long through hole intermediate position, middle slide damper can all block isolation handle hole and ground connection handle hole. With this arrangement, a fifth interlocking mechanism is formed, that is, the isolation operation and the grounding operation can be performed only one operation at a time, and when the isolation operation is performed, the grounding operation cannot be performed; when the grounding operation is performed, the isolation operation cannot be performed.
A further scheme is, circuit breaker operating device's assembly plate on be equipped with the mounting bracket, the position of this mounting bracket is located the front side portion of second roof, third roof and limiting plate, second roof, third roof and limiting plate respectively with mounting bracket sliding fit, the pivot and the mounting bracket fixed connection of the rotor plate of bolt subassembly.
The utility model has the positive effects that: 1) the interlocking mechanism for the circuit breaker operating mechanism, the three-position switch and the ring main unit can be suitable for the circuit breaker switch cabinet with the three-position switch positioned above the circuit breaker operating mechanism; 2) the interlocking mechanism for the circuit breaker operating mechanism, the three-position switch and the ring main unit has the advantages of simple structure and high operation reliability, and can realize interlocking logic with higher safety requirements, namely when the circuit breaker operating mechanism is switched on, the three-position switch baffle mechanism cannot move and cannot operate the three-position switch; the cabinet door of the ring main unit cannot be opened under the opening state of the circuit breaker operating mechanism; when the cabinet door of the ring main unit is opened, the breaker operating mechanism cannot perform opening operation; when the three-station switch is in a closing or isolating state, the cabinet door of the ring main unit cannot be opened.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a rear view structural diagram of the present invention.
Fig. 3 is a front view of the interlock mechanism.
Fig. 4 is a schematic structural view of the latch assembly.
Fig. 5 is a rear side structure schematic diagram of the three-position switch.
The reference numerals in the figures are as follows: the ring main unit 1, the cabinet door 11, the upper frame 111, the latch assembly 12, the latch 121, the rotating plate 122, the rotating shaft 123, the compression spring 124, the limit rod 125, the first interlocking mechanism 2, the crank arm 21, the connecting rod 22, the first cam 23, the upper protrusion 231, the lower protrusion 232, the first top plate 24, the upper top plate 241, the slot 2411, the lower top plate 242, the second interlocking mechanism 3, the second top plate 31, the baffle 311, the return spring 32, the spring fixing column 33, the third interlocking mechanism 4, the limit plate 41, the plug 411, the return spring 42, the spring connecting column 43, the fourth interlocking mechanism 5, the second cam 51, the third top plate 52, the upper top plate 521, the middle top plate 522, the lower top plate 523, the inclined limit portion 524, the return spring 53, the spring connecting column 54, the three-position switch baffle mechanism 6, the front plate 61, the middle sliding baffle 62, the rear fixing plate 63, the isolating operation hole 64, the grounding operation hole 65, the through hole 66, the slider 67, the dial plate 68, the reset torsion spring 69, the opening operating shaft 7, the limiting block 71 and the mounting rack 8.
Detailed Description
The technical solutions of the present invention are described clearly and completely by the following embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
As shown in fig. 1-5, an interlocking mechanism for a circuit breaker operating mechanism and a three-position switch and a ring main unit comprises:
the first interlocking mechanism 2 is used between a main shaft of the circuit breaker operating mechanism and the three-position switch baffle mechanism, and aims to prevent the three-position switch baffle mechanism from moving and operating a three-position switch when the circuit breaker operating mechanism is switched on.
And a second interlocking mechanism 3 between the main shaft of the circuit breaker operating mechanism and the cabinet door 11 of the ring main unit 1. Its purpose, the cabinet door of looped netowrk cabinet can't be opened under the breaker operating device separating brake state.
And a third interlocking mechanism 4 between the breaker opening operation shaft and the cabinet door 11 of the ring main unit 1. Its purpose, when looped netowrk cabinet 1's cabinet door 11 was opened, circuit breaker operating device could not carry out the separating brake operation.
And a fourth interlocking mechanism 5 between the three-position switch main shaft and a cabinet door 11 of the ring main unit 1. Its purpose, when three station switch were in combined floodgate or isolated state, looped netowrk cabinet 1's cabinet door 11 can't be opened.
The device also comprises a fifth interlocking mechanism, namely, the isolation operation and the grounding operation can only be carried out simultaneously, and when the isolation operation is carried out, the grounding operation can not be carried out; when the grounding operation is performed, the isolation operation cannot be performed. This interlocking is achieved by the intermediate slide shutter mechanism of the three-position switch.
The first interlocking mechanism 2 comprises a crank arm 21, a connecting rod 22, a first cam 23 and a first top plate 24, the crank arm 21 is fixedly connected to a main shaft of the circuit breaker operating mechanism, one end of the connecting rod 22 is connected with the crank arm 21, the other end of the connecting rod 22 is connected with the first cam 23, an upper protruding portion 231 and a lower protruding portion 232 are arranged on the first cam 23, the first top plate 24 is arranged above the first cam 23, the upper protruding portion 231 on the first cam 23 can push the first top plate 24 to move upwards, a clamping groove 2411 for limiting the middle sliding baffle 62 of the three-position switch baffle mechanism 6 to move leftwards and rightwards is arranged at the top of the first top plate 24, and when the first top plate 24 moves upwards, the clamping groove 2411 is combined with a sliding block 67 on the middle sliding baffle 62 of the three-position switch baffle mechanism 6 to limit the middle sliding baffle 62 to move leftwards and rightwards.
The first top plate 24 includes an upper top plate 241 and a lower top plate 242, the upper top plate 241 and the lower top plate 242 are respectively provided with a long hole, the upper top plate 241 and the lower top plate 242 are both fixed by a fixing column, the fixing column penetrates through the long hole to assemble the upper top plate 241 on an assembly plate of the three-position switch, the lower top plate 242 is assembled on the assembly plate of the circuit breaker operating mechanism by the fixing column, a matched bevel face is arranged between the lower top plate 242 and the upper top plate 241, the upper top plate 241 and the lower top plate 242 transmit thrust through a bevel, the lower end face of the lower top plate 242 is provided with a bevel face, the bevel face is arranged above the first cam 23, the first cam 23 pushes the first top plate 24 to move upwards through the bevel face when rotating, and the clamping groove 2411 is arranged at the upper end portion of the upper top plate 241.
The second interlocking mechanism 3 includes a second top plate 31, a return spring 32 and a spring fixing post 33, the second top plate 31 is disposed below the first cam 24, and when the first cam 24 rotates, the lower protrusion 242 of the first cam 24 pushes the second top plate 31 to move downwards, the upper end of the return spring 32 is fixed on the assembly plate of the circuit breaker operating mechanism through the spring fixing post 33, the lower end of the return spring 32 is fixedly connected with the second top plate 31 to provide an upward return pulling force for the second top plate 31, when the second top plate 31 moves downwards, the lower end of the second top plate 31 is provided with a baffle 311, the baffle 311 can move to the front side of the upper end of the rotating plate 122 of the latch pin assembly 12 to limit the rotation of the rotating plate 122, and further, the bolt 121 is restricted from contracting towards the direction away from the cabinet door 11 of the ring main unit 1, so that the bolt 121 is kept inserted into the positioning hole on the upper frame 111 of the cabinet door 11 of the ring main unit 1.
The third interlocking mechanism 4 comprises a limiting plate 41, a return spring 42 and a spring connecting column 43, the upper end of the limiting plate 41 extends to the side of the opening operating shaft 7 of the circuit breaker operating mechanism, a limiting block 71 is fixedly connected to the opening operating shaft 7, the limiting block 71 rotates along with the opening operating shaft 7 when the opening operating shaft 7 rotates, after the limiting plate 41 moves upwards, the upper end of the limiting plate 41 and the limiting block 71 form a limiting position, the upper end of the return spring 42 is fixed on an assembling plate of the circuit breaker operating mechanism through the spring connecting column 43, the lower end of the return spring 42 is fixedly connected with the limiting plate 41 to provide upward tension for the limiting plate 41, the lower end of the limiting plate 41 extends to the upper frame 111 of the cabinet door 11 of the ring main unit 1, a socket is arranged on the upper frame 111 of the cabinet door 11 of the ring main unit 1, a plug 411 corresponding to the socket is arranged at the lower end of the limiting plate 41, when the ring main unit 1 is closed, the plug 411 of the limiting plate 41 is inserted into the socket on the cabinet door 11 of the ring main unit 1, then, when the cabinet door 11 of the ring main unit 1 moves downward and completes closing, the limiting plate 41 moves downward, and the upper end portion of the limiting plate 41 is away from the limiting block 71 on the opening operation shaft 7.
The fourth interlocking mechanism 5 includes a second cam 51, a third top plate 52, a return spring 53 and a spring connecting column 54, the second cam 51 is disposed on the three-position switch spindle, the upper end of the third top plate 52 is located below the second cam 51, when the second cam 51 rotates, the protruding portion on the second cam 51 can push the third top plate 52 to move downward, the lower end of the third top plate 52 is located above the upper frame 111 of the cabinet door 11 of the ring main unit 1, the lower end of the third top plate 52 is provided with an inclined limiting portion 524 matched with the limiting rod 125 of the latch mechanism 12, when the third top plate 52 descends, the limiting rod 125 of the latch assembly 12 can be limited, rotation of the rotating plate 122 is limited, and then the latch 121 is limited to contract towards the direction away from the cabinet door 11 of the ring main unit 1, so that the latch 121 is kept to be inserted into the positioning hole on the upper frame 111 of the cabinet door 11 of the ring main unit 1.
The third top plate 52 includes an upper top plate 521, a middle top plate 522 and a lower top plate 523, the upper top plate 521, the middle top plate 522 and the lower top plate 523 are all provided with an assembly slot hole, the upper top plate is assembled on an assembly plate of the three-position switch through a fixing column, the middle top plate 522 and the lower top plate 523 are assembled on an assembly plate of the circuit breaker operating mechanism through the fixing column, the fixing column is in sliding fit with the assembly slot hole, a bevel surface for transmitting power is respectively arranged between the upper top plate 521 and the middle top plate 522 and between the middle top plate 522 and the lower top plate 523, a bevel surface is arranged at the upper end part of the upper top plate 521, the bevel surface is positioned below the second cam 51, and the third top plate 52 is pushed through the bevel surface when the second cam 51 rotates.
The three-position switch baffle mechanism 6 comprises a front panel 61, a middle sliding baffle 62 and a rear fixing plate 63, wherein the front panel 61 and the rear panel 63 are fixedly connected, the middle sliding baffle 62 can slide left and right relative to the front panel 61 and the rear panel 63, an isolation operation hole 64 and a grounding operation hole 65 corresponding to an isolation operation shaft and a grounding operation shaft of the three-position switch are respectively arranged on the front panel 61 and the rear panel 63, a through hole 66 corresponding to the isolation operation hole 64 and the grounding operation hole 65 is arranged on the middle sliding baffle 62, when the through hole 66 on the middle sliding baffle 62 is aligned with the isolation operation hole 64, the grounding operation hole 65 is blocked, and when the through hole 66 on the middle sliding baffle 62 is aligned with the grounding operation hole 65, the isolation operation hole 64 is blocked. At least two groups of horizontal long holes are arranged on the rear fixing plate 63, a slide block 67 corresponding to the horizontal long holes is arranged on the middle sliding baffle plate 62, so that the middle sliding baffle plate 62 can slide left and right relative to the rear fixing plate 63, one of the slide blocks 67 is combined with the slot 2411 at the top of the first top plate 24 to limit the middle slide baffle 62 left and right, the middle part of the middle slide baffle 62 is provided with a shifting plate 68, the front panel 61 and the rear fixing plate 63 are provided with long through holes corresponding to the dial plate 68, the rear end of the dial plate 68 extends to the rear side of the rear fixing plate 63, a reset torsion spring 69 is arranged on the rear fixed plate 63 at a position corresponding to the shifting plate 68, a shifting rod of the reset torsion spring 69 is fixedly connected with the shifting plate 68, so that the shifting plate 68 is stopped at the middle position of the long through hole, when the dial plate 68 stays at the middle position of the long through hole, the intermediate slide shutter 62 can block both the isolation operation hole 64 and the ground operation hole 65. With this arrangement, a fifth interlocking mechanism is formed, that is, the disconnecting operation and the grounding operation can be performed only one operation at the same time, and when the disconnecting operation is performed, the grounding operation cannot be performed; when the grounding operation is performed, the isolation operation cannot be performed.
Preferably, the mounting bracket 8 is arranged on the mounting plate of the circuit breaker operating mechanism, the mounting bracket 8 is located at a front side portion of the second top plate 31, the third top plate 52 and the limiting plate 41, the second top plate 31, the third top plate 52 and the limiting plate 41 are respectively in sliding fit with the mounting bracket 8, and the rotating shaft 123 of the rotating plate 122 of the latch assembly 12 is fixedly connected with the mounting bracket 8.
The interlocking mechanism for the circuit breaker operating mechanism, the three-position switch and the ring main unit is required to meet two conditions when the interlocking mechanism is operated, wherein the circuit breaker operating mechanism is in a closing state under the first condition, and the three-position switch is in a grounding state under the second condition, so that the ring main unit is opened under the normal power supply state of a power grid, the circuit breaker operating mechanism is firstly opened, a main shaft of the circuit breaker operating mechanism rotates clockwise to drive the first cam to rotate clockwise, the upper convex part of the first cam leaves the first top plate, the first top plate moves downwards to separate the clamping groove at the top of the first top plate from the clamping block on the middle sliding baffle of the three-position switch, the middle sliding baffle of the three-position switch can move left and right to operate the three-position switch, and meanwhile, the lower convex part of the first cam abuts against the second top plate, the second top plate moves downwards, and the lower end of the second top plate is blocked at the front side of the rotating plate of the bolt assembly 12, so that the rotating plate cannot rotate, and the bolt is inserted into the frame of the cabinet door of the ring main unit; then, the three-position switch is rotated to an isolated state through an isolated operation hole of the three-position switch, then a grounding operation hole of the three-position switch is operated to a grounding closed state, at the moment, a boss of a second cam on a main shaft of the three-position switch leaves a third top plate, the third top plate moves upwards under the action of a return spring, and an inclined limiting part at the lower end of the third top plate leaves a limiting rod of the plug pin assembly 12; then the circuit breaker operating mechanism carries out closing operation, the main shaft of the circuit breaker drives the first cam to rotate anticlockwise, so that the upper convex part of the first cam is abutted against the first top plate, the first top plate moves upwards, the clamping groove at the top of the first top plate is combined with the clamping block on the middle sliding baffle of the three-station switch, the middle sliding baffle of the three-station switch cannot move, the lower convex part of the first cam is separated from the second top plate, the second top plate moves upwards under the action of a reset spring, the lower end of the second top plate is separated from the rotating plate of the bolt component 12, so that the rotating plate can rotate freely, the bolt is separated from the jack on the upper frame of the cabinet door of the ring main unit under the action of a compression spring of the bolt component 12, at the moment, the cabinet door of the ring main unit is pulled to move upwards for a certain height, the cabinet door of the ring main unit can be opened, when the cabinet door of the ring main unit moves upwards, the limiting plate of the third interlocking mechanism moves upwards along with the cabinet door, the upper end of the limiting plate moves to the side of the opening operation shaft of the circuit breaker operation mechanism, the limiting block on the opening operation shaft is limited by the upper end of the limiting plate, the opening operation cannot be performed at the moment, the door opening operation of the ring main unit is completed through the action process, the door closing operation step of the ring main unit is just opposite to the door opening step, and the details are not repeated here.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an interlocking device that is used for circuit breaker operating device and three-station switch and looped netowrk cabinet which characterized in that: the interlocking mechanism comprises a first interlocking mechanism used between a main shaft of the circuit breaker operating mechanism and a three-position switch baffle mechanism, a second interlocking mechanism used between the main shaft of the circuit breaker operating mechanism and a cabinet door of a ring main unit, a third interlocking mechanism used between a breaker opening operating shaft and the cabinet door of the ring main unit, and a fourth interlocking mechanism used between the main shaft of the three-position switch and the cabinet door of the ring main unit;
the upper frame of the cabinet door of the ring main unit is provided with a plug pin assembly, the plug pin assembly comprises a plug pin, a rotating plate, a rotating shaft, a compression spring and a limiting rod, the rotating plate is assembled on an assembling plate of the circuit breaker operating mechanism through the rotating shaft, the rotating shaft penetrates through the middle of the rotating plate, the plug pin is connected to the lower portion of the rotating plate, the plug pin can extend and retract towards the cabinet door of the ring main unit relative to the rotating plate, a jack corresponding to the plug pin is arranged on the upper frame of the cabinet door of the ring main unit, the compression spring is sleeved on the plug pin to provide force far away from the cabinet door of the ring main unit for the plug pin, and the limiting rod is arranged on the upper portion of the rotating plate;
the first interlocking mechanism comprises a crank arm, a connecting rod, a first cam and a first top plate, the crank arm is fixedly connected to a main shaft of the circuit breaker operating mechanism, one end of the connecting rod is connected with the crank arm, the other end of the connecting rod is connected with the first cam, an upper bulge and a lower bulge are arranged on the first cam, the first top plate is arranged above the first cam, the upper bulge on the first cam can push the first top plate to move upwards, a clamping groove for limiting the left and right movement of a middle sliding baffle of the three-position switch baffle mechanism is arranged at the top of the first top plate, and when the first top plate moves upwards, the clamping groove is combined with a sliding block on the middle sliding baffle of the three-position switch baffle mechanism to limit the left and right movement of the middle sliding baffle;
the second interlocking mechanism comprises a second top plate, a reset spring and a spring fixing column, the second top plate is arranged below the first cam, when the first cam rotates, a lower protruding portion on the first cam pushes the second top plate to move downwards, the upper end of the reset spring is fixed on an assembling plate of the circuit breaker operating mechanism through the spring fixing column, the lower end of the reset spring is fixedly connected with the second top plate to provide upward reset pulling force for the second top plate, when the second top plate moves downwards, a baffle plate is arranged at the lower end of the second top plate, the baffle plate can move to the front side of the upper end portion of a rotating plate of the bolt assembly to limit the rotation of the rotating plate, so that the bolt is limited to contract towards the direction far away from the cabinet door of the ring main unit, and the bolt is enabled to be inserted into a positioning hole in an upper frame of the cabinet door of the ring main unit;
the third interlocking mechanism comprises a limiting plate, a reset spring and a spring connecting column, the upper end of the limiting plate extends to the side of an opening operation shaft of the circuit breaker operation mechanism, a limiting block is fixedly connected to the opening operation shaft, the limiting block rotates along with the opening operation shaft when the opening operation shaft rotates, after the limiting plate moves upwards, the upper end of the limiting plate and the limiting block form limiting, the upper end of the reset spring is fixed on an assembly plate of the circuit breaker operation mechanism through the spring connecting column, the lower end of the reset spring is fixedly connected with the limiting plate to provide upward tension for the limiting plate, the lower end of the limiting plate extends to the upper frame of a cabinet door of the ring main unit, a socket is arranged on the upper frame of the cabinet door of the ring main unit, a plug corresponding to the socket is arranged at the lower end of the limiting plate, when the ring main unit is closed, the plug of the limiting plate is inserted into the socket on the cabinet door of the ring main unit, then the cabinet door of the ring main unit moves downwards to complete closing, the limiting plate moves downwards, and the upper end part of the limiting plate is far away from the limiting block on the brake-separating operation shaft;
the fourth interlocking mechanism comprises a second cam, a third top plate, a reset spring and a spring connecting column, the second cam is arranged on a three-station switch main shaft, the upper end of the third top plate is located below the second cam, when the second cam rotates, the protruding portion on the second cam can push the third top plate to move downwards, the lower end of the third top plate is located above an upper frame of a cabinet door of the ring main unit, the lower end of the third top plate is provided with a limit rod matched with a limit rod of the bolt mechanism, when the third top plate descends, the limit rod of the bolt component can be limited, rotation of the rotating plate is limited, and then the bolt is limited to shrink towards the direction of the cabinet door far away from the ring main unit, and the bolt is enabled to be kept inserted into a positioning hole in the upper frame of the cabinet door of the ring main unit.
2. An interlocking mechanism for a circuit breaker operating mechanism with a three position switch and a ring main unit as claimed in claim 1, wherein: the first top plate comprises an upper top plate and a lower top plate, slot holes are formed in the upper top plate and the lower top plate respectively, the upper top plate and the lower top plate are fixed through fixing columns, the fixing columns penetrate through the slot holes to assemble the upper top plate on an assembling plate of the three-station switch, the lower top plate is assembled on the assembling plate of the circuit breaker operating mechanism through the fixing columns, matched bevel faces are arranged between the lower top plate and the upper top plate, the upper top plate and the lower top plate transmit thrust through the bevel faces, bevel faces are arranged on the lower end face of the lower top plate and are arranged above the first cam, the first cam pushes the first top plate to move upwards through the bevel faces when rotating, and the clamping grooves are formed in the upper end portion of the upper top plate.
3. An interlocking mechanism for a circuit breaker operating mechanism with a three position switch and a ring main unit as claimed in claim 1, wherein: the third roof include the upper portion roof, middle part roof and lower part roof, the upper portion roof, all be equipped with the assembly slot hole on middle part roof and the lower part roof, the upper portion roof passes through the fixed column assembly on the assembly plate of three-station switch, middle part roof and lower part roof pass through the fixed column assembly on circuit breaker operating device's assembly plate, fixed column and assembly slot hole sliding fit, between upper portion roof and middle part roof, be equipped with the dog-ear face that is used for transmitting power between middle part roof and the lower part roof respectively, the upper end at the upper portion roof is equipped with dog-ear face, this dog-ear face is located the below of second cam, move the third roof through this dog-ear face top when second cam rotates.
4. An interlocking mechanism for a circuit breaker operating mechanism with a three position switch and a ring main unit as claimed in claim 1, wherein: three station switch baffle mechanism include the front panel, middle slide damper and after-fixing board, front panel and rear panel fixed connection, middle slide damper can be relative front panel and rear panel horizontal slip, all be equipped with isolation handle hole and the ground connection handle hole that corresponds with the isolation handle axle and the ground connection handle axle of three station switches on front panel and rear panel, be equipped with the through-hole that corresponds with isolation handle hole and ground connection handle hole on the middle slide damper, when the through-hole on the middle slide damper aligns with isolation handle hole, the ground connection handle hole is blockked, when the through-hole on the middle slide damper aligns with the ground connection handle hole, the isolation handle hole is blockked.
5. An interlocking mechanism for a circuit breaker operating mechanism and a three position switch and ring main unit as claimed in claim 4, wherein: the back fixed plate on be equipped with two sets of at least horizontal slot holes, be equipped with the slider that corresponds with horizontal slot hole on middle slide damper, make middle slide damper can relative back fixed plate horizontal slip, one of them slider with can control spacingly to middle slide damper after the draw-in groove at first roof top combines, middle slide damper's middle part is equipped with dials the board, all be equipped with on front panel and back fixed plate with dial the slotted hole that the board corresponds, the rear end of dialling the board extends to the rear side of back fixed plate, the position that corresponds with dialling the board on the back fixed plate is equipped with the reset torsion spring, the driving lever and the dialling board fixed connection of reset torsion spring, make and dial the board and stop the intermediate position at the slotted hole, when dialling the board and stop at the slotted hole intermediate position, middle slide damper can all block isolation handle hole and ground connection handle hole.
6. An interlocking mechanism for a circuit breaker operating mechanism with a three position switch and a ring main unit as claimed in claim 1, wherein: the mounting frame is arranged on the assembling plate of the circuit breaker operating mechanism, the position of the mounting frame is located on the front side portion of the second top plate, the third top plate and the limiting plate, the second top plate, the third top plate and the limiting plate are in sliding fit with the mounting frame respectively, and the rotating shaft of the rotating plate of the bolt assembly is fixedly connected with the mounting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120956685.2U CN215417982U (en) | 2021-05-06 | 2021-05-06 | Interlocking mechanism for circuit breaker operating mechanism, three-position switch and ring main unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120956685.2U CN215417982U (en) | 2021-05-06 | 2021-05-06 | Interlocking mechanism for circuit breaker operating mechanism, three-position switch and ring main unit |
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| CN215417982U true CN215417982U (en) | 2022-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843147A (en) * | 2022-07-01 | 2022-08-02 | 思贝尔电气有限公司 | Interlocking mechanism for low-voltage double-plastic-shell circuit breaker |
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2021
- 2021-05-06 CN CN202120956685.2U patent/CN215417982U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843147A (en) * | 2022-07-01 | 2022-08-02 | 思贝尔电气有限公司 | Interlocking mechanism for low-voltage double-plastic-shell circuit breaker |
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