CN113078008A - Door interlock for ring main unit and ring main unit - Google Patents
Door interlock for ring main unit and ring main unit Download PDFInfo
- Publication number
- CN113078008A CN113078008A CN202110256360.8A CN202110256360A CN113078008A CN 113078008 A CN113078008 A CN 113078008A CN 202110256360 A CN202110256360 A CN 202110256360A CN 113078008 A CN113078008 A CN 113078008A
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- plate
- interlock
- shaft
- interlocking
- main unit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to a door interlock for a ring main unit and the ring main unit, wherein the door interlock comprises a base, a grounding shaft, a linkage rod, a brake separating shaft, a counter mounting plate, an interlock baffle and a cable chamber door; the grounding shaft is a switch for controlling the on-off of the grounding of the ring main unit, and the linkage rod is used for limiting the on-off of the grounding shaft through an interlocking baffle; the brake separating shaft is a switch used for controlling the on-off of a circuit breaker of the ring main unit; the counter mounting plate is provided with a blocking part, and the blocking part is used for supporting the right side of the interlocking baffle; the interlocking baffle plate is supported by the blocking part, so that the circuit breaker is prevented from being forcibly opened, the circuit breaker cannot be closed when in power transmission operation, the circuit breaker needs to be closed repeatedly, and then the circuit breaker is closed to perform the power transmission operation.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to a door interlock for a ring main unit and a ring main unit.
Background
The existing upper circuit breaker and lower isolating ring network cabinet door interlocking is characterized in that after a circuit breaker is opened, an isolating switch is opened, and a grounding switch is closed, a cable is grounded, and a door can be opened; the door of the upper circuit breaker lower isolation ring network cabinet is interlocked only by ensuring that the door can be opened after the grounding switch is switched on. The power failure operation sequence of the upper isolation lower circuit breaker ring main unit is that a circuit breaker is opened, an isolating switch is opened, a grounding switch is closed, a circuit breaker is closed, a cable is grounded, and a door can be opened. The power transmission operation sequence comprises closing a door, opening a breaker, opening a grounding switch, closing an isolating switch and closing the breaker.
More information about the above solution can also be found in the following documents:
in the utility model patent of patent publication No. CN 210223827U, a solid insulation looped netowrk cabinet operating device and cable chamber door interlock is disclosed, including interlocking support I, interlocking support II, locking lever I, locking lever II, locking lever III, even board I, even board II, horizontal pin, spring I and spring II. The utility model discloses a go up circuit breaker generating line system solid insulation looped netowrk cubical switchboard under isolation in the twinkling of an eye of combined floodgate, can be quick, and the realization of safety is shutting cable chamber door under the electrified condition, prevents that the people from taking place to electrocute danger. When needing to overhaul or maintain cable house cable, need to open the ring network switch separating brake, open interlock and could open cable house door, the danger of people's electric shock has been reduced to the probability. And processing is simple, convenient operation has reduced purchasing cost, and more importantly can avoid the emergence of maloperation, protection personal and equipment safety.
In the invention patent with the patent publication number of CN 111162461 a, a 10kV environment-friendly gas-insulated ring main unit is disclosed, which comprises a cabinet body, a circuit breaker switch, a disconnecting switch, a circuit breaker mechanism and a disconnecting mechanism, wherein the cabinet body comprises an instrument room, a switch room, a mechanism room, a pressure relief room and a cable room, the instrument room is positioned at the top of the cabinet body, the switch room and the mechanism room are positioned in the middle of the cabinet body, the pressure relief room and the cable room are positioned at the lower part of the cabinet body, the mechanism room is positioned in front of the switch room, the cable room is positioned in front of the pressure relief room, and the circuit breaker mechanism is installed in the mechanism room and used for triggering the opening; the isolation mechanism is arranged in the mechanism chamber and located below the circuit breaker mechanism and used for triggering the on-off of the isolation switch, the requirement of five-prevention interlocking can be met, and the isolation mechanism is simple and reasonable in structural design, small in size and good in stability.
In the process of implementing the invention, the inventor finds that the following problems exist in the prior art:
in the isolation cabinet under the circuit breaker, generally through carrying out the interlocking to earthing switch and cable chamber door through the door interlocking, nevertheless in circuit breaker cabinet under last isolation, need earthing switch combined floodgate and circuit breaker when closing, the cable has ground connection, just can open cable chamber door. If the upper isolation lower circuit breaker cabinet is interlocked with the upper circuit breaker lower isolation cabinet door, the cable chamber door is opened when the cable is not grounded, and an accident risk is generated.
Disclosure of Invention
Therefore, it is necessary to provide a door interlock for a ring main unit and a ring main unit, which are used for solving the technical problem that if the door interlock of an upper breaker and a lower isolation cabinet is used, a cable chamber door is opened when a cable is not grounded, and an accident risk is caused in the prior art.
In order to achieve the purpose, the inventor provides a door interlock for a ring main unit, which comprises an air tank, a grounding shaft, a linkage rod, a brake separating shaft, a counter mounting plate, an interlock baffle and a cable chamber door;
the grounding shaft is arranged on the air box, the grounding shaft is a switch for controlling the on-off of the grounding of the ring main unit, and the interlocking rod is used for limiting the on-off of the grounding shaft through an interlocking baffle;
the branch brake shaft is arranged on the air box, the branch brake shaft is a switch for controlling the on-off of a circuit breaker of the ring main unit, a branch brake plate is arranged on the branch brake shaft, the branch brake plate is fixedly connected with the branch brake shaft, and the linkage rod is used for blocking the branch brake plate through the linkage baffle plate so as to limit the opening of the circuit breaker;
the counter mounting plate is arranged on the air box, the counter mounting plate is arranged on one side of the brake separating shaft, a blocking part is arranged on the counter mounting plate, the blocking part is arranged on the right side of the interlocking baffle, and the blocking part is used for supporting the right side of the interlocking baffle when the brake separating plate abuts against the left side of the interlocking baffle;
the interlocking rod is used for limiting the opening and closing of the cable chamber door through a hanging plate.
As an embodiment of the present invention, the door interlock further includes a rotation shaft disposed at one side of the interlock fence, the rotation shaft being used to limit a position of the interlock fence by a crank arm.
As an embodiment of the present invention, a partition plate is disposed on the cable chamber door, a mounting plate is disposed on the air chamber, the interlocking plate is disposed on the air chamber through the mounting plate, and the interlocking rod sequentially passes through a hole on the partition plate and a hole on the mounting plate and is fixed on the interlocking plate.
As an embodiment of the present invention, the interlocking baffle is fixed on the interlocking rod, the interlocking baffle is provided with a limiting hole, and the interlocking baffle is fixed on the mounting plate through the matching of the shaft sleeve and the limiting hole.
As an embodiment of the present invention, the door interlock further includes a first return spring, and the first return spring is sleeved on the interlock rod and is clamped between the mounting plate and a screw provided on the interlock rod.
As an embodiment of the present invention, the door interlock further includes a door hook fixed to a door of the cable chamber, the hanging plate is disposed below the partition plate, and the door hook includes a first fixing portion engaged with the interlock lever and a second fixing portion engaged with the hanging plate.
As an embodiment of the present invention, the door interlock further includes a bracket and an interlock sliding block, the interlock sliding block is fixed to the bracket through a bushing, the interlock sliding block is vertically slidable and fixed to the bracket through a bushing, and the interlock sliding block is horizontally slidable and adapted to limit movement of the interlock sliding block.
As an embodiment of the present invention, the door interlock further includes a transmission plate, the transmission plate is disposed on the grounding shaft, the transmission plate is provided with a first pin shaft and a second pin shaft, the first pin shaft and the second pin shaft are respectively located at two ends of the transmission plate, the interlocking sliding baffle is disposed at one side of the transmission plate, and the grounding shaft is configured to drive the transmission plate to rotate when the grounding shaft rotates, so as to drive the interlocking sliding baffle to slide left and right along a horizontal direction.
As an embodiment of the present invention, the door interlock further includes a second return spring, and the second return spring is hung between the interlock slide shutter and the bracket.
Different from the prior art, the technical scheme is that the grounding shaft is used as a switch for controlling the on-off of the grounding of the ring main unit, and the interlocking rod is used for limiting the on-off of the grounding shaft through the interlocking baffle; the opening shaft is a switch for controlling the on-off of a circuit breaker of the ring main unit, and the linkage rod is used for blocking the opening plate through the linkage baffle plate so as to limit the opening of the circuit breaker; be provided with the stop part on the counter mounting panel, the stop part sets up the right side of chain baffle, the stop part is set up to work as the minute flashboard supports and leans on during the left side of chain baffle, the stop part is used for right the right side of chain baffle supports. In this way, through the blocking part, even if a person forcibly rotates the opening shaft of the circuit breaker after the cable chamber door is opened, the blocking part is used for preventing the opening shaft from rotating; the blocking part plays a role in double insurance, the interlocking baffle firstly blocks the rotation of the brake separating shaft, and then the blocking part supports the interlocking baffle to prevent the circuit breaker from being forcibly opened, so that the circuit breaker cannot be closed when power transmission operation is carried out, repeated closing is required, and the door is closed again to carry out the power transmission operation.
To achieve the above object, the inventor further provides a ring main unit, which includes a door interlock for the ring main unit as described in any one of the above objects.
The technical scheme is that through the interlocking baffle plate, the blocking part and the interlocking rod, when the three-station switching mechanism is grounded and the breaker switching mechanism is switched on, the cable chamber door can be opened, and after the cable chamber door is opened, even if someone forcibly rotates the opening shaft of the breaker, the blocking part is used for preventing the opening shaft from rotating; the blocking part plays a role in double insurance, the interlocking baffle firstly blocks the rotation of the brake separating shaft, and then the blocking part supports the interlocking baffle, so that the circuit breaker is prevented from being forcibly braked, the occurrence of accidents is further avoided when the power transmission operation is caused, the door cannot be closed, the repeated closing is required, and the door is closed again to carry out the power transmission operation.
Drawings
Fig. 1 is a schematic structural diagram of a door interlock for a ring main unit according to an embodiment;
fig. 2 is a partially enlarged schematic view of a door interlock for a ring main unit according to an embodiment;
FIG. 3 is an enlarged partial schematic view of a door interlock with the cable compartment door of the exemplary embodiment open;
FIG. 4 is another enlarged partial perspective view of the door interlock with the cable compartment door of the exemplary embodiment open;
FIG. 5 is a schematic structural view of the cable chamber door according to the embodiment in a closed state;
FIG. 6 is a schematic structural view of the cable chamber door according to the embodiment in an open state;
FIG. 7 is a schematic structural diagram of the grounding shaft in an open state according to the embodiment;
FIG. 8 is a schematic view of another angle structure of the grounding shaft in the brake-off state according to the embodiment;
fig. 9 is a schematic structural diagram of the grounding shaft in a grounding state according to the specific embodiment.
Description of reference numerals:
1. a three-position switch mechanism is arranged on the upper part of the frame,
2. a switch mechanism of the circuit breaker is arranged,
3. a cable chamber door is provided,
31. a hook is arranged at the door, and a hook is arranged at the door,
4. a partition board is arranged on the bottom of the shell,
5. the plate is hung on the plate body,
6. a connecting lock rod is connected with the lock rod,
7. a brake separating shaft is arranged on the brake separating device,
8. the gate-separating plate is arranged on the upper side of the gate,
9. a counter mounting plate is arranged on the counter base,
91. the stop part is arranged on the side wall of the casing,
10. the baffle plates are interlocked with each other, and the baffle plates are interlocked with each other,
11. the crank arm is arranged on the upper portion of the crank arm,
12. a rotating shaft is arranged at the position of the rotating shaft,
13. a first return spring is arranged at the bottom of the first guide rail,
14. a mounting plate is arranged on the base plate,
15. a shaft sleeve is arranged on the upper end of the shaft sleeve,
16. the transmission plate is arranged on the upper surface of the transmission plate,
161. a first pin roll is arranged on the first side of the first pin roll,
162. a second pin shaft is arranged on the second side of the first pin shaft,
17. the grounding shaft is arranged on the outer side of the grounding shaft,
18. the interlocking baffle plate is arranged on the upper portion of the frame,
19. the sliding baffle plates are interlocked with each other,
20. a second return spring is arranged on the second side of the frame,
21. a support frame is arranged on the base plate,
22. an air box.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
Referring to fig. 1 to 9, the present embodiment relates to a door interlock for a ring main unit, which includes a three-position switch mechanism 1, a partition plate 4, a breaker switch mechanism 2, an air tank 22, a grounding shaft 17, a linking rod 6, a tripping shaft 7, a counter mounting plate 9, an interlock baffle 10 and a cable chamber door 3; the three-position switch mechanism 1 is positioned above the breaker switch mechanism 2, and the partition plate 4 is positioned below the breaker switch mechanism 2.
The grounding shaft 17 is arranged on the three-position switch mechanism 1, the grounding shaft 17 is a switch for controlling the on-off of the grounding of the ring main unit, and the interlocking rod 6 is used for limiting the on-off of the grounding shaft 17 through the interlocking baffle 18; the opening shaft 7 is arranged on the circuit breaker switching mechanism 2, the opening shaft 7 is a switch for controlling the on-off of a circuit breaker of the ring main unit, the opening plate 8 is arranged on the opening shaft 7, the opening plate 8 is fixedly connected with the opening shaft 7, and the linkage rod 6 is used for blocking the opening plate 8 through the linkage baffle plate 10, so that the opening of the circuit breaker is limited;
the counter mounting plate 9 is arranged on the circuit breaker switching mechanism 2, the counter mounting plate 9 is arranged on one side of the opening shaft 7, a blocking part 91 is arranged on the counter mounting plate 9, the blocking part 91 is arranged on the right side of the interlocking baffle plate 10, and the blocking part 91 is arranged to be used for supporting the right side of the interlocking baffle plate 10 when the opening plate 8 abuts against the left side of the interlocking baffle plate 10; the interlock lever 6 serves to restrict opening and closing of the cable chamber door 3 by the hanging plate 5.
In this way, by the blocking portion 91, even if a person forcibly rotates the opening shaft 7 of the circuit breaker after the cable chamber door 3 is opened, the blocking portion 91 serves to prevent the rotation of the opening shaft 7; the blocking part 91 plays a role of double insurance, the interlocking baffle plate 10 firstly blocks the rotation of the brake separating shaft 7, and then supports the interlocking baffle plate 10 through the blocking part 91, so that the circuit breaker is prevented from being forcibly switched on, and further accidents are avoided.
As shown in fig. 1, 2 and 5, the whole mechanism is in the states of opening the circuit breaker, opening the isolating switch and closing the door. The hanging plate 5 is hooked by the padlock part of the door hook 31, and the slotting part of the interlocking rod 6 is blocked by the half-slot part. The opening shutter 8 is not blocked by the interlocking shutter 10, and the opening shutter shaft 7 can be rotated counterclockwise.
Optionally, the door interlock further comprises a rotating shaft 12, the rotating shaft 12 is disposed at one side of the interlocking flap 10, and the rotating shaft 12 is used for limiting the position of the interlocking flap 10 through the crank arm 11. In this way, the crank arm 11 of the rotating shaft 12 can be used for limiting the position of the interlocking barrier 10, and the crank arm 11 blocks the interlocking barrier 10 to prevent the interlocking barrier 10 from moving upwards and block the rotation of the brake separating shaft 7.
Optionally, a partition plate 4 is arranged on the cable chamber door 3, a mounting plate 14 is arranged on the circuit breaker switching mechanism 2, the interlocking baffle 10 is arranged on the circuit breaker switching mechanism 2 through the mounting plate 14, and the interlocking rod 6 sequentially penetrates through a hole on the partition plate 4 and a hole on the mounting plate 14 and is fixed on the interlocking baffle 18. In this way, the ground shaft 17 and the opening shaft 7 can be interlocked with each other by the interlock lever 6.
Optionally, the interlocking baffle 10 is fixed on the interlocking rod 6, a limiting hole is formed in the interlocking baffle 10, and the interlocking baffle 10 is fixed on the mounting plate 14 through the matching of the shaft sleeve 15 and the limiting hole. Therefore, the shaft sleeve 15 and the limiting hole are matched to limit the interlocking baffle plate 10 to move up and down only along the vertical direction, so that the interlocking baffle plate 10 is prevented from moving in other directions and interfering with other mechanisms.
Optionally, the door interlock further comprises a first return spring 13, and the first return spring 13 is sleeved on the interlock rod 6 and clamped between the mounting plate 14 and a screw arranged on the interlock rod 6. In this way, the first return spring 13 can generate an upward restoring force to the interlock lever 6.
As shown in fig. 3, 4 and 6, when the circuit breaker is closed, the connecting lever 11 rotates clockwise by 90 degrees to release the interlocking shutter 10, the cable chamber door 3 is opened, the first return spring 13 moves the interlocking lever 6, the interlocking shutter 10 and the interlocking shutter 18 upward, the interlocking shutter 10 blocks the opening shutter 8, and the opening shaft 7 does not rotate counterclockwise to open the opening. The interlocking shutter 18 blocks the ground operation shaft and cannot operate the ground switch opening.
As shown in fig. 4 and 5, the door interlock further includes a door hook 31, the door hook 31 is fixed on the cable chamber door 3, the hanging plate 5 is disposed below the partition plate 4, and the door hook 31 includes a first fixing portion matched with the interlock rod 6 and a second fixing portion matched with the hanging plate 5. The first fixing part corresponds to the half-groove part of the door hook 31 and is used for clamping the groove of the interlocking rod 6; the second fixing portion corresponds to a padlock portion of the door hanger 31 for hooking the hanging plate 5. In this manner, the cable chamber door 3 can be opened or closed by the up-and-down movement of the interlock lever 6.
As shown in fig. 7 and 8, when the earthing switch is opened, the interlocking slide baffle 19 is at the rightmost end, and the baffle blocks the folded edge of the interlocking baffle 18 to prevent the interlocking baffle from moving upwards. The grounding switch can be operated at this time. At this point, the cable compartment door 3 is locked and cannot be lifted up to open the door.
Optionally, the door interlock further comprises a bracket 21 and an interlock sliding block 19, the interlock sliding block 18 is fixed on the bracket 21 through a shaft sleeve 15, the interlock sliding block 18 can slide up and down along the vertical direction, the interlock sliding block 19 is fixed on the bracket 21 through the shaft sleeve 15, and the interlock sliding block 19 can slide left and right along the horizontal direction and is used for limiting the movement of the interlock sliding block 18. In this way, the position of the interlock shutter 18 can be restricted by the interlock slide shutter 19, and the switch socket of the ground shaft 17 is prevented from being inserted into the ground shaft 17 by the interlock shutter 18.
As shown in fig. 9, when the grounding switch is turned on, the grounding operating shaft rotates clockwise by 180 degrees, the transmission plate 16 rotates accordingly, and the first pin 161 pulls the interlocking slide shutter 19 to move leftward. The interlocking flap 18 is released and the interlocking flap 18 is free to move upward.
Optionally, the door interlock still includes driving plate 16, and driving plate 16 sets up on earthing shaft 17, is provided with first round pin axle 161 and second round pin axle 162 on driving plate 16, and first round pin axle 161 is located the both ends of driving plate 16 respectively with second round pin axle 162, and interlock sliding closure 19 sets up in one side of driving plate 16, and earthing shaft 17 is set up to when earthing shaft 17 rotates, and it is rotatory to drive driving plate 16 to drive interlock sliding closure 19 along the horizontal direction horizontal slip. Thus, the rotation of the grounding shaft 17 drives the rotation of the driving plate 16 to drive the interlocking slide baffle 19 to move leftward, so that the interlocking baffle 18 moves upward, thereby preventing the switch socket of the grounding shaft 17 from being inserted into the grounding shaft 17 to switch the grounding shaft 17, and the grounding shaft 17 is in an inoperable state.
Optionally, the door interlock further comprises a second return spring 20, the second return spring 20 being suspended between the interlock slide stop 19 and the bracket 21. Thus, the interlock slide shutter 19 is reset by the second return spring 20.
The embodiment relates to and also relates to a ring main unit, which comprises the door interlock for the ring main unit as explained above. The door interlock is used for limiting the opening and closing of the cable chamber door 3 of the ring main unit.
Different from the prior art, the technical scheme is that the grounding shaft 17 is used as a switch for controlling the on-off of the grounding of the ring main unit, and the interlocking rod 6 is used for limiting the on-off of the grounding shaft 17 through the interlocking baffle 18; the opening shaft 7 is a switch for controlling the on-off of the circuit breaker of the ring main unit, and the linkage rod 6 is used for blocking the opening plate 8 through the linkage baffle plate 10, so that the opening of the circuit breaker is limited; the counter mounting plate 9 is provided with a blocking portion 91, the blocking portion 91 is arranged on the right side of the interlocking baffle plate 10, and the blocking portion 91 is arranged to support the right side of the interlocking baffle plate 10 when the separating brake plate 8 abuts against the left side of the interlocking baffle plate 10. In this way, by the blocking portion 91, even if a person forcibly rotates the opening shaft 7 of the circuit breaker after the cable chamber door 3 is opened, the blocking portion 91 serves to prevent the rotation of the opening shaft 7; the blocking part 91 plays a role of double insurance, the interlocking baffle plate 10 firstly blocks the rotation of the brake separating shaft 7, and secondly supports the interlocking baffle plate 10 through the blocking part 91, so that the circuit breaker is prevented from being forcedly separated from the brake, the door cannot be closed when the power transmission operation is caused, the repeated switch-on is required, and the door is closed again to perform the power transmission operation. .
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (10)
1. A door interlock for a ring main unit is characterized by comprising an air box, a grounding shaft, a connecting lock rod, a brake separating shaft, a counter mounting plate, an interlock baffle and a cable chamber door;
the grounding shaft is arranged on the air box, the grounding shaft is a switch for controlling the on-off of the grounding of the ring main unit, and the interlocking rod is used for limiting the on-off of the grounding shaft through an interlocking baffle;
the branch brake shaft is arranged on the air box, the branch brake shaft is a switch for controlling the on-off of a circuit breaker of the ring main unit, a branch brake plate is arranged on the branch brake shaft, the branch brake plate is fixedly connected with the branch brake shaft, and the linkage rod is used for blocking the branch brake plate through the linkage baffle plate so as to limit the opening of the circuit breaker;
the counter mounting plate is arranged on the air box, the counter mounting plate is arranged on one side of the brake separating shaft, a blocking part is arranged on the counter mounting plate, the blocking part is arranged on the right side of the interlocking baffle, and the blocking part is used for supporting the right side of the interlocking baffle when the brake separating plate abuts against the left side of the interlocking baffle;
the interlocking rod is used for limiting the opening and closing of the cable chamber door through a hanging plate.
2. The door interlock for a ring main unit according to claim 1, further comprising a rotation shaft disposed at one side of the interlocking flap, the rotation shaft being used to limit the position of the interlocking flap by a crank arm.
3. The door interlock for the ring main unit according to claim 1, wherein a partition plate is disposed on the cable chamber door, a mounting plate is disposed on the air box, the interlock baffle is disposed on the air box through the mounting plate, and the interlock rod sequentially passes through a hole on the partition plate and a hole on the mounting plate and is fixed on the interlock baffle.
4. The door interlock for a ring main unit according to claim 3, wherein the interlocking baffle is fixed on the interlocking rod, a limiting hole is formed in the interlocking baffle, and the interlocking baffle is fixed on the mounting plate through the matching of a shaft sleeve and the limiting hole.
5. The door interlock for a ring main unit according to claim 4, further comprising a first return spring sleeved on the interlock rod and clamped between the mounting plate and a screw disposed on the interlock rod.
6. The door interlock for a ring main unit according to claim 3, further comprising a door hook fixed to a cable chamber door, wherein the hanging plate is disposed under the partition plate, and the door hook comprises a first fixing portion fitted with the interlock lever and a second fixing portion fitted with the hanging plate.
7. The door interlock for a ring main unit according to claim 1, further comprising a bracket and an interlock slide plate, wherein the interlock plate is fixed to the bracket by a bushing, the interlock plate is vertically slidable up and down, the interlock slide plate is fixed to the bracket by a bushing, and the interlock slide plate is horizontally slidable left and right and is configured to limit movement of the interlock plate.
8. The door interlock of claim 7, further comprising a driving plate, wherein the driving plate is disposed on the grounding shaft, the driving plate is provided with a first pin and a second pin, the first pin and the second pin are respectively disposed at two ends of the driving plate, the interlocking sliding plate is disposed at one side of the driving plate, and the grounding shaft is configured to drive the driving plate to rotate when the grounding shaft rotates, so as to drive the interlocking sliding plate to slide left and right along a horizontal direction.
9. The door interlock for a ring main unit according to claim 8, further comprising a second return spring, the second return spring being suspended between the interlock slide stop and the bracket.
10. A ring main unit, comprising a door interlock for a ring main unit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110256360.8A CN113078008A (en) | 2021-03-09 | 2021-03-09 | Door interlock for ring main unit and ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110256360.8A CN113078008A (en) | 2021-03-09 | 2021-03-09 | Door interlock for ring main unit and ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113078008A true CN113078008A (en) | 2021-07-06 |
Family
ID=76612624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110256360.8A Pending CN113078008A (en) | 2021-03-09 | 2021-03-09 | Door interlock for ring main unit and ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113078008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990688A (en) * | 2021-10-28 | 2022-01-28 | 许昌许继软件技术有限公司 | Cabinet door interlocking device for switch equipment and switch equipment |
| CN114420479A (en) * | 2022-01-21 | 2022-04-29 | 平高集团有限公司 | Cable chamber door interlocking structure of upper three-station ring main unit |
-
2021
- 2021-03-09 CN CN202110256360.8A patent/CN113078008A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990688A (en) * | 2021-10-28 | 2022-01-28 | 许昌许继软件技术有限公司 | Cabinet door interlocking device for switch equipment and switch equipment |
| CN113990688B (en) * | 2021-10-28 | 2024-04-12 | 许昌许继软件技术有限公司 | Cabinet door interlocking device for switch equipment and switch equipment |
| CN114420479A (en) * | 2022-01-21 | 2022-04-29 | 平高集团有限公司 | Cable chamber door interlocking structure of upper three-station ring main unit |
| CN114420479B (en) * | 2022-01-21 | 2023-11-07 | 平高集团有限公司 | Cable chamber door interlocking structure of upper three-station ring main unit |
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