CN211957527U - Operation interlocking mechanism for three-station vacuum circuit breaker - Google Patents
Operation interlocking mechanism for three-station vacuum circuit breaker Download PDFInfo
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- CN211957527U CN211957527U CN202020963038.XU CN202020963038U CN211957527U CN 211957527 U CN211957527 U CN 211957527U CN 202020963038 U CN202020963038 U CN 202020963038U CN 211957527 U CN211957527 U CN 211957527U
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- grounding
- cover plate
- baffle
- circuit breaker
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- 230000005540 biological transmission Effects 0.000 claims description 9
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- 230000004888 barrier function Effects 0.000 description 4
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Abstract
The utility model relates to an operation interlocking device for three station vacuum circuit breaker, which comprises a frame, the ground connection operation axis, keep apart the operation axis, operating panel, circuit breaker drive main shaft, set up isolation interlock apron in the frame to set up drive assembly between isolation interlock apron and circuit breaker drive main shaft, make when circuit breaker drive main shaft is the closing position, block isolation operation hole and make isolator can't be operated, when circuit breaker drive main shaft is the separating brake position, just can expose isolation operation hole and operate isolator.
Description
Technical Field
The utility model relates to an operation interlocking device for three station vacuum circuit breaker.
Background
The three-station vacuum circuit breaker integrates a vacuum circuit breaker, an isolating switch and a grounding switch and is arranged in a switch cabinet. When the vacuum circuit breaker is in a power connection state, the disconnecting switch needs to be in a closing state, if the disconnecting switch is switched off through misoperation, accidents can be easily caused, and therefore a reliable locking mechanism needs to be arranged between the circuit breaker operating mechanism and the disconnecting switch, and the disconnecting switch cannot be operated in the power connection state.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide an operation interlocking device for three station vacuum circuit breaker.
The utility model discloses the technical scheme who takes as follows: an operation interlocking mechanism for a three-station vacuum circuit breaker comprises a rack, a grounding operation shaft, an isolation operation shaft, an operation panel and a circuit breaker driving main shaft, wherein the rack is fixedly connected with the operation panel, the operation panel is provided with a grounding operation hole and an isolation operation hole, a handle can be connected through the grounding operation hole to manually operate the grounding operation shaft, the isolation operation shaft can be manually operated through the isolation operation hole, the rack is connected with an isolation interlocking cover plate, the isolation interlocking cover plate can slide relative to the rack and is provided with a third position for blocking the isolation operation hole to prevent the isolation operation shaft from being operated and a fourth position for leaving the front area of the isolation operation hole to expose the isolation operation shaft for operation; a transmission assembly is arranged between the isolation interlocking cover plate and the circuit breaker driving main shaft, and when the circuit breaker driving main shaft is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate slides to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft is in a switching-on position, the isolation interlocking cover plate is located at a third position; when the breaker driving main shaft is in the opening position, the isolation interlocking cover plate is located at the fourth position.
The transmission assembly comprises a driving crank arm, a connecting rod and a shifting piece; one end of the driving crank arm is fixed on the circuit breaker driving main shaft and is in linkage fit with the circuit breaker driving main shaft, and the other end of the driving crank arm is hinged with one end of the connecting rod through a first hinge column; one end of the shifting piece is hinged with the rack through a second hinge column, and the other end of the shifting piece is arranged on one side of the isolation interlocking cover plate or connected with the isolation interlocking cover plate; the other end of the connecting rod is hinged with the shifting piece through a third hinge column.
The other end of the shifting piece is arranged on one side of the isolation interlocking cover plate, and the isolation interlocking cover plate is connected with a return spring.
The other end of the shifting piece is arranged on one side, close to the operation panel, of the isolation interlocking cover plate, and the reset spring is arranged on one side, close to the operation panel, of the isolation interlocking cover plate.
The isolation interlocking cover plate comprises a connecting plate, a cover plate part and a driving part, a strip-shaped hole used for being connected to the rack is formed in the connecting plate, and the other end of the shifting piece is arranged on one side, close to the operating panel, of the driving part.
The outer surface of the operation panel is connected with a baffle plate, and a grounding operation window and an isolating operation window are arranged on the baffle plate;
the baffle plate can slide relative to the operation panel, and is provided with a first position at which the grounding operation window faces the grounding operation hole to enable the grounding operation hole to be exposed and operable and the isolation operation window is staggered with the isolation operation hole to enable the isolation operation hole to be shielded and inoperable, and a second position at which the isolation operation window faces the isolation operation hole to enable the isolation operation hole to be exposed and operable and the grounding operation window is staggered with the grounding operation hole to enable the grounding operation hole to be shielded and inoperable;
the grounding operation shaft is circumferentially connected with a grounding closing locking piece in a linkage manner, the isolation operation shaft is circumferentially connected with an isolation closing locking piece in a linkage manner, the baffle is fixedly provided with an interlocking pin, and the operation panel is provided with an opening through which the interlocking pin passes;
when the baffle is located at the first position and the grounding operation shaft is located at the grounding switching-on position, the grounding switching-on locking piece is located on a path of the interlocking pin moving from the first position to the second position to form a locking effect on the baffle, so that the baffle cannot move to the second position;
when the baffle is located at the second position and the isolation operation shaft is located at the isolation switching-on position, the isolation switching-on locking piece is located on a path of the interlocking pin moving from the second position to the first position, and a locking effect is formed on the baffle so that the baffle cannot move to the first position.
When the baffle is located at the second position and the isolation interlocking cover plate is located at the third position, the isolation interlocking cover plate is located in front of the baffle moving to the first position.
The isolation operation window is a groove which is arranged at one end edge of the baffle plate close to the isolation interlocking cover plate from the second position to the first position, and when the baffle plate is located at the second position and the isolation interlocking cover plate is located at the third position, the isolation interlocking cover plate is located in the isolation operation window.
The operating panel is provided with a grounding state indicating window and an isolating state indicating window, the grounding closing locking piece comprises a grounding state indicating part, the isolating closing locking piece comprises an isolating state indicating part, the grounding state indicating part displays and indicates a grounding opening state or a grounding closing state on the grounding state indicating window, and the isolating state indicating part displays and indicates an isolating opening state or an isolating closing state on the isolating state indicating window.
The utility model has the advantages as follows: the utility model discloses a set up isolation interlock apron in the frame to set up drive assembly between isolation interlock apron and circuit breaker drive main shaft, make when circuit breaker drive main shaft is the closing position, block isolation operation hole and make isolator can't be operated, when circuit breaker drive main shaft is the separating brake position, just can expose isolation operation hole and operate isolator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of section A of FIG. 2, wherein the circuit breaker drive shaft is in the open position;
fig. 4 is a positional relationship among the isolation interlock cover plate, the baffle plate, and the operation panel when the breaker driving main shaft is in the opening position and the ground switch is in the closing position;
FIG. 5 is a schematic view of the position relationship between the grounding operating shaft and the isolating operating shaft when the grounding switch is in the on position;
fig. 6 is a positional relationship among the isolation interlock cover plate, the baffle plate, and the operation panel when the breaker driving main shaft is in the opening position and the disconnecting switch is in the closing position;
FIG. 7 is a positional relationship between the grounding operating shaft and the isolating operating shaft when the isolating switch is in the on position;
FIG. 8 is a schematic view of section A of FIG. 2, wherein the circuit breaker drive shaft is in the closed position;
fig. 9 is a positional relationship among the isolation interlock cover plate, the baffle plate, and the operation panel when the breaker driving main shaft is in the on position and the disconnecting switch is in the on position;
FIG. 10 is a schematic view of the structure of the isolation interlock cover plate;
in the figure, 1, a frame; 101, a through groove; 2, grounding the operating shaft; 3, isolating the operating shaft; 4, an operation panel; 401, grounding an operation hole; 402, isolating the operation hole; 403, a grounded state indication window; 404, an isolation status indication window; 5, a baffle plate; 501, grounding an operation window; 502, isolating the operating window; 503, interlocking pins; 504, a handle; 6, a grounding closing locking piece; 601, a grounding state indicating part; 7, isolating a closing locking piece; 701, an isolation state indicating part; 8, a breaker driving main shaft; 10, isolating the interlocking cover plate; 1001, connecting plates; 1002, a cover plate portion; 1003, strip-shaped holes; 1004, a driving part; 11, driving a crank arm; 12, a connecting rod; 13, a shifting sheet; 14, a first hinge post; 15, a second hinge post; 16, a third hinge post; and 17, a return spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be construed as limitations to the embodiments of the present invention, and the following embodiments do not describe the embodiments one by one.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
As shown in fig. 1 and 2, an operation interlocking mechanism for a three-position vacuum circuit breaker comprises a frame 1, a grounding operation shaft 2, an isolation operation shaft 3, an operation panel 4 and a circuit breaker driving main shaft 8, the frame 1 is fixedly connected with an operation panel 4, the operation panel 4 is provided with a grounding operation hole 401 and an isolation operation hole 402, a handle can be connected through the grounding operation hole 401 to manually operate the grounding operation shaft 2, the isolation operation shaft 3 can be manually operated through the isolation operation hole 402, an isolation interlocking cover plate 10 is connected to the machine frame 1, the isolation interlock cover 10 is slidable relative to the frame 1 and has a third position on a sliding path for blocking the isolation operation hole 402 to disable the isolation operation shaft 3 and a fourth position away from a region in front of the isolation operation hole 402 to expose the isolation operation shaft 3 for operation; a transmission assembly is arranged between the isolation interlocking cover plate 10 and the breaker driving main shaft 8, and when the breaker driving main shaft 8 is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate 10 is slid to a third position and/or a fourth position through the transmission assembly; as shown in fig. 8 and 9, when the breaker driving main shaft 8 is in the closing position, the isolation interlock cover plate 10 is in the third position; as shown in fig. 3 and 4, when the breaker driving main shaft 8 is in the opening position, the isolation interlock cover 10 is located at the fourth position.
Through setting up isolation interlocking apron in the frame to set up drive assembly between isolation interlocking apron and circuit breaker drive main shaft, make when circuit breaker drive main shaft is the closing position, block isolation operation hole and make isolator can't be operated, when circuit breaker drive main shaft is the separating brake position, just can expose isolation operation hole and operate isolator.
As shown in fig. 3 and 8, the transmission assembly comprises a driving crank arm 11, a connecting rod 12 and a shifting piece 13; one end of the driving crank arm 11 is fixed on the breaker driving main shaft 8 and is in linkage fit with the breaker driving main shaft 8, and the other end of the driving crank arm is hinged with one end of the connecting rod 12 through a first hinge column 14; one end of the shifting piece 13 is hinged with the rack 1 through a second hinge column 15, and the other end of the shifting piece is arranged on one side of the isolation interlocking cover plate 10 or connected with the isolation interlocking cover plate 10; the other end of the connecting rod 12 is hinged with the shifting piece 13 through a third hinge column 16. As shown in fig. 3, when the circuit breaker driving spindle 8 rotates clockwise, the driving crank arm 11 is driven to rotate clockwise, and the link 12 pushes the pull tab 13 to rotate clockwise around the second hinge post 15, as shown in fig. 8.
The other end of the shifting piece 13 is arranged on one side of the isolation interlocking cover plate 10, and the isolation interlocking cover plate 10 is connected with a return spring 17. When the circuit breaker driving main shaft 8 in fig. 3 rotates clockwise, the return spring 17 provides a pulling force to move the isolating interlocking cover plate 10 to the left, and when the circuit breaker driving main shaft 8 in fig. 8 rotates counterclockwise, the pusher 13 provides a pushing force to move the isolating interlocking cover plate 10 to the right.
The other end of the shifting piece 13 is arranged on one side of the isolation interlocking cover plate 10 close to the operation panel 4, and the return spring 17 is arranged on one side of the isolation interlocking cover plate 10 close to the operation panel 4.
As shown in fig. 10, the isolation interlock cover 10 includes a connecting plate 1001, a cover plate portion 1002, and a driving portion 1003, wherein the connecting plate 1001 is provided with a strip-shaped hole 1004 for connecting to the rack 1, and the other end of the pulling piece 13 is disposed on a side of the driving portion 1003 close to the operation panel 4.
A baffle 5 is connected to the outer surface of the operation panel 4, and a grounding operation window 501 and an isolating operation window 502 are arranged on the baffle 5;
the baffle 5 is slidable relative to the operation panel 4, and has a first position on the sliding path, in which the grounding operation window 501 is opposite to the grounding operation hole 401 to make the grounding operation hole 401 exposed operable and the isolation operation window 502 is staggered from the isolation operation hole 402 to make the isolation operation hole 402 shielded inoperable, as shown in fig. 4, and a second position, in which the isolation operation window 502 is opposite to the isolation operation hole 402 to make the isolation operation hole 402 exposed operable and the grounding operation window 501 is staggered from the grounding operation hole 401 to make the grounding operation hole 401 shielded inoperable, as shown in fig. 6;
a grounding closing locking piece 6 is connected to the grounding operation shaft 2 in a circumferential linkage manner, an isolating closing locking piece 7 is connected to the isolating operation shaft 3 in a circumferential linkage manner, an interlocking pin 503 is fixedly arranged on the baffle 5, and an opening 405 for the interlocking pin 503 to pass through is formed in the operation panel 4;
as shown in fig. 5, when the shutter 5 is located at the first position and the ground operating shaft 2 is located at the ground closing position, the ground closing locking member 6 is located on a path along which the interlocking pin 503 moves from the first position to the second position, and locks the shutter 5 so that the shutter 5 cannot move to the second position;
as shown in fig. 7, when the shutter 5 is located at the second position and the isolation operation shaft 3 is located at the isolation closing position, the isolation closing lock 7 is located on a path of the interlocking pin 503 moving from the second position to the first position to lock the shutter 5 so that the shutter 5 cannot move to the first position.
As shown in fig. 4, when the baffle 5 is located at the first position and the isolating interlocking cover plate 10 is located at the fourth position, the baffle 5 is located in front of the isolating interlocking cover plate 10 moving to the third position, and a limiting effect is formed on the isolating interlocking cover plate 10; as shown in fig. 9, when the baffle 5 is located at the second position and the isolation interlock cover 10 is located at the third position, the isolation interlock cover 10 is located in front of the baffle 5 moving to the first position.
The isolation operating window 502 is a groove formed at an edge of one end of the baffle 5 close to the isolation interlock cover plate 10 on one side of the direction of moving from the second position to the first position, and when the baffle 5 is located at the second position and the isolation interlock cover plate 10 is located at the third position, the isolation interlock cover plate 10 is located in the isolation operating window 502.
The operating panel 4 is provided with a grounding state indicating window 403 and an isolation state indicating window 404, the grounding closing locking member 6 includes a grounding state indicating part 601, the isolation closing locking member 7 includes an isolation state indicating part 701, the grounding state indicating part 601 displays and indicates a grounding opening state or a grounding closing state in the grounding state indicating window 403, and the isolation state indicating part 701 displays and indicates an isolation opening state or an isolation closing state in the isolation state indicating window 404.
As shown in fig. 4 and 5, the grounding operation shaft 2 is at a switching-on position, the isolating operation shaft 3 is at a switching-off position, and the operation main shaft 8 is at a switching-off position, at this time, the grounding switching-on locking piece 6 has a locking effect on the baffle 5, so that the baffle 5 cannot move, and the isolating interlocking cover plate 10 is at a fourth position; at this time, the grounding operation shaft 2 is rotated to the opening position, the locking effect of the grounding closing locking piece 6 on the baffle 5 is released, the baffle 5 can move upwards, and the isolation operation shaft 3 is operated to the closing position, as shown in fig. 6 and 7; at this time, the operation main shaft 8 is rotated to the on position, and the isolation interlock cover 10 is moved to the third position, as shown in fig. 8 and 9.
As shown in fig. 8 and 9, when the operating main shaft 8 is at the closing position, the isolating operating shaft 3 is at the closing position, and the grounding operating shaft 2 is at the opening position, the isolating interlocking cover plate 10 is at the third position, the baffle 5 is at the second position, the isolating interlocking cover plate 10 is located in the isolating operating window 502, the grounding operating shaft 2 is blocked by the baffle 5, and the isolating operating shaft 3 is blocked by the isolating interlocking cover plate 10. At this time, the main operating shaft 8 is rotated to the opening position, the isolation interlocking cover plate 10 is moved to the fourth position, the isolation operating shaft 3 is exposed, as shown in fig. 6 and 7, the isolation closing locking piece 7 has a locking effect on the barrier 5, so that the barrier 5 cannot be moved, and therefore the grounding operating shaft 2 cannot be operated, when the isolation operating shaft 3 is rotated to the opening position, the locking effect of the isolation closing locking piece 7 on the barrier 5 is released, the barrier 5 can be moved to expose the grounding operating shaft 2, as shown in fig. 2 and 5, at this time, the grounding operating shaft 2 can be rotated to the closing position.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. The utility model provides an operation interlocking device for three station vacuum circuit breaker, includes frame (1), ground connection operation axle (2), isolation operation axle (3), operating panel (4), circuit breaker drive main shaft (8), frame (1) and operating panel (4) fixed connection, be equipped with ground connection operation hole (401) and isolation operation hole (402) on operating panel (4), through ground connection operation hole (401) joinable handle carries out manually operation to ground connection operation axle (2), through isolation operation hole (402) can carry out manually operation to isolation operation axle (3), its characterized in that: the machine frame (1) is connected with an isolation interlocking cover plate (10), the isolation interlocking cover plate (10) can slide relative to the machine frame (1) and is provided with a third position which blocks an isolation operation hole (402) to enable an isolation operation shaft (3) not to be operated and a fourth position which is separated from the front area of the isolation operation hole (402) to enable the isolation operation shaft (3) to be exposed for operation on a sliding path; a transmission assembly is arranged between the isolation interlocking cover plate (10) and the breaker driving main shaft (8), and when the breaker driving main shaft (8) is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate (10) is enabled to slide to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft (8) is in a switching-on position, the isolation interlocking cover plate (10) is located at a third position; when the breaker driving main shaft (8) is in the opening position, the isolation interlocking cover plate (10) is located at the fourth position.
2. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 1, wherein: the transmission assembly comprises a driving crank arm (11), a connecting rod (12) and a shifting piece (13); one end of the driving crank arm (11) is fixed on the breaker driving main shaft (8) and is in linkage fit with the breaker driving main shaft (8), and the other end of the driving crank arm is hinged with one end of the connecting rod (12) through a first hinge column (14); one end of the shifting piece (13) is hinged with the rack (1) through a second hinge column (15), and the other end of the shifting piece is arranged on one side of the isolation interlocking cover plate (10) or connected with the isolation interlocking cover plate (10); the other end of the connecting rod (12) is hinged with the shifting piece (13) through a third hinge column (16).
3. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 2, wherein: the other end of the shifting piece (13) is arranged on one side of the isolation interlocking cover plate (10), and the isolation interlocking cover plate (10) is connected with a return spring (17).
4. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 3, wherein: the other end of the plectrum (13) is arranged on one side of the isolation interlocking cover plate (10) close to the operation panel (4), and the return spring (17) is arranged on one side of the isolation interlocking cover plate (10) close to the operation panel (4).
5. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 4, wherein: the isolation interlocking cover plate (10) comprises a connecting plate (1001), a cover plate part (1002) and a driving part (1003), wherein a strip-shaped hole (1004) used for being connected to the rack (1) is formed in the connecting plate (1001), and the other end of the poking piece (13) is arranged on one side, close to the operating panel (4), of the driving part (1003).
6. An operating interlock mechanism for a three-position vacuum circuit breaker according to any one of claims 1 to 5, wherein:
the outer surface of the operation panel (4) is connected with a baffle (5), and a grounding operation window (501) and an isolating operation window (502) are arranged on the baffle (5);
the baffle (5) can slide relative to the operation panel (4), and is provided with a first position on a sliding path, wherein the grounding operation window (501) faces the grounding operation hole (401) to enable the grounding operation hole (401) to be exposed and operable, and the isolation operation window (502) is staggered with the isolation operation hole (402) to enable the isolation operation hole (402) to be shielded and inoperable, and a second position, wherein the isolation operation window (502) faces the isolation operation hole (402) to enable the isolation operation hole (402) to be exposed and operable, and the grounding operation window (501) is staggered with the grounding operation hole (401) to enable the grounding operation hole (401) to be shielded and inoperable;
a grounding closing locking piece (6) is connected to the grounding operation shaft (2) in a circumferential linkage manner, an isolating closing locking piece (7) is connected to the isolating operation shaft (3) in a circumferential linkage manner, an interlocking pin (503) is fixedly arranged on the baffle (5), and an opening (405) for the interlocking pin (503) to pass through is formed in the operation panel (4);
when the baffle (5) is located at the first position and the grounding operation shaft (2) is located at the grounding closing position, the grounding closing locking piece (6) is located on a path of the interlocking pin (503) moving from the first position to the second position to form a locking effect on the baffle (5) so that the baffle (5) cannot move to the second position;
when the baffle (5) is located at the second position and the isolation operation shaft (3) is located at the isolation switching-on position, the isolation switching-on locking piece (7) is located on a path of the interlocking pin (503) moving from the second position to the first position to form a locking effect on the baffle (5) so that the baffle (5) cannot move to the first position.
7. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 6, wherein: when the baffle (5) is located at the second position and the isolation interlocking cover plate (10) is located at the third position, the isolation interlocking cover plate (10) is located in front of the baffle (5) moving to the first position.
8. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 7, wherein: the isolation operation window (502) is a groove which is arranged at one end edge of the baffle (5) close to the isolation interlocking cover plate (10) from the second position to the first position, when the baffle (5) is located at the second position and the isolation interlocking cover plate (10) is located at the third position, the isolation interlocking cover plate (10) is located in the isolation operation window (502).
9. The operating interlock mechanism for a three-position vacuum circuit breaker according to claim 6, wherein: the operating panel (4) is provided with a grounding state indicating window (403) and an isolation state indicating window (404), the grounding switch-on locking piece (6) comprises a grounding state indicating part (601), the isolation switch-on locking piece (7) comprises an isolation state indicating part (701), the grounding state indicating part (601) displays and indicates a grounding switch-off state or a grounding switch-on state in the grounding state indicating window (403), and the isolation state indicating part (701) displays and indicates an isolation switch-off state or an isolation switch-on state in the isolation state indicating window (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020963038.XU CN211957527U (en) | 2020-05-29 | 2020-05-29 | Operation interlocking mechanism for three-station vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020963038.XU CN211957527U (en) | 2020-05-29 | 2020-05-29 | Operation interlocking mechanism for three-station vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211957527U true CN211957527U (en) | 2020-11-17 |
Family
ID=73170718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020963038.XU Expired - Fee Related CN211957527U (en) | 2020-05-29 | 2020-05-29 | Operation interlocking mechanism for three-station vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211957527U (en) |
-
2020
- 2020-05-29 CN CN202020963038.XU patent/CN211957527U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.221, Jingba Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee after: Yuli Electric Group Co.,Ltd. Address before: No.221, Jingba Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: YULI ELECTRICAL Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201117 |