CN110600315A - Three-station isolating switch operating mechanism - Google Patents
Three-station isolating switch operating mechanism Download PDFInfo
- Publication number
- CN110600315A CN110600315A CN201911042245.XA CN201911042245A CN110600315A CN 110600315 A CN110600315 A CN 110600315A CN 201911042245 A CN201911042245 A CN 201911042245A CN 110600315 A CN110600315 A CN 110600315A
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- grounding
- closing
- plate
- crank arm
- shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000009471 action Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a three-station isolating switch operating mechanism, which comprises a closing operating shaft, wherein the closing operating shaft drives a closing drive plate to rotate, the closing drive plate drives a closing crank arm to rotate, the closing crank arm drives a closing limiting plate to rotate, the closing limiting plate limits the closing crank arm, the closing limiting plate drives a transmission plate when rotating, and the transmission plate drives an output transmission shaft to rotate; the grounding operation shaft is operated, the grounding operation shaft drives the grounding drive plate to rotate, the grounding drive plate drives the grounding crank arm to rotate, the grounding crank arm drives the grounding limiting plate to rotate, the grounding limiting plate limits the grounding crank arm, the transmission plate is driven when the grounding limiting plate rotates, and the transmission plate drives the output transmission shaft to rotate. The three-station isolating switch operating mechanism has the characteristics of simple structure, small number of parts, low manufacturing cost, convenience in installation and debugging and the like.
Description
Technical Field
The invention relates to the technical field of high-voltage distribution equipment, in particular to a three-station isolating switch operating mechanism.
Background
The three-position isolating switch integrates an isolating switch and a grounding switch, and is often used in a switch cabinet in the technical field of high-voltage distribution equipment. The three working positions are respectively a closing position, an isolating position and a grounding position; the three-station isolating switch on the current market is relatively complex in structure, large in size, troublesome in operation, incapable of meeting the requirement of miniaturization, and has the defects of poor accuracy of switching action, poor reliability, high maintenance cost and the like.
Disclosure of Invention
The invention aims to provide a three-station isolating switch operating mechanism, which solves the problems in the prior art and has the characteristics of simple structure, small number of parts, low manufacturing cost, convenience in installation and debugging and the like.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a three-station isolating switch operating mechanism which comprises a pull rod, an output transmission shaft, a transmission plate, a closing operation assembly, a grounding operation assembly, an interlocking lifting plate and an interlocking baffle plate, wherein two sides of the output transmission shaft, the closing operation assembly and the grounding operation assembly are fixed on a middle partition plate and a rear plate and can freely rotate;
in the closing operation assembly, the closing drive plate and the closing operation shaft synchronously rotate through a flat groove, the closing crank arm, the closing limiting plate and the closing operation shaft are matched through an optical axis, the closing crank arm and the closing limiting plate can freely rotate on the closing operation shaft, the closing limiting plate is formed by welding a special-shaped plate and a rotating crank arm, and convex shafts are arranged on two sides of the closing crank arm;
in the grounding operation assembly, a grounding drive plate and a grounding operation shaft synchronously rotate through a flat groove, a grounding crank arm, a grounding limiting plate and the grounding operation shaft are matched through an optical axis, the grounding crank arm and the grounding limiting plate can freely rotate on the grounding operation shaft, the grounding limiting plate is formed by welding a special-shaped plate and a rotating crank arm, and convex shafts are arranged on two sides of the grounding crank arm; the closing crank arm and the grounding crank arm are connected through a pressure spring assembly;
the pull rod can move up and down along the notch of the front plate and the interlocking lifting plate can move up and down along the operation of the front plate, an interlocking ejector rod and an interlocking inserting rod are fixed on the interlocking lifting plate, an interlocking baffle is arranged on the upper portion of the interlocking lifting plate, and the output transmission shaft drives the interlocking baffle to move left and right through the crank arm.
Preferably, a status indicator is mounted on the output drive shaft and displays a closed position, an isolated position or a ground position in response to rotation of the output drive shaft
Preferably, the rear plate is provided with a limit pin, and two limit pins are correspondingly arranged on two sides of the closing limit plate and the grounding limit plate.
Preferably, the transmission plate is provided with a guide groove, and the protruding shaft penetrates through the rear plate and is inserted into the guide groove of the transmission plate so as to drive the transmission shaft to rotate.
Preferably, the two ends of the pressure spring assembly are fixed on the grounding crank arm and the closing crank arm, the closing crank arm keeps static under the action of the closing limit plate when the grounding crank arm rotates, and the grounding crank arm keeps static under the action of the grounding limit plate when the closing crank arm rotates.
Compared with the prior art, the invention has the following technical effects:
the three-station isolating switch operating mechanism has the characteristics of simple structure, small number of parts, low manufacturing cost, convenience in installation and debugging and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a left side view of a three-position isolator mechanism;
FIG. 2 is a front view of a three-position disconnect switch mechanism;
FIG. 3 is a right side view of the three-position disconnect switch mechanism;
FIGS. 4a, 4b and 4c are cross-sectional views of a three-position disconnector mechanism;
FIG. 5 is a schematic diagram of the limiting of the grounding position of the three-position disconnecting switch mechanism;
FIG. 6 is a schematic diagram of the spacing of the isolation position of the three-position isolating switch mechanism;
FIG. 7 is a schematic diagram of the limit of the closing position of the three-position disconnecting switch mechanism;
FIG. 8 is a schematic view of the interlock and lower door interlock in the ground position of the three-position disconnect switch mechanism;
FIG. 9 is a schematic view of the interlock and lower door interlock in the isolated position of the three-position isolator mechanism;
FIG. 10 is a schematic view of the interlock and lower door interlock in the closed position of the three-position disconnect switch mechanism;
fig. 11 is a schematic interlocking diagram of the opening position of the circuit breaker and the three-position disconnecting switch mechanism;
fig. 12 is an interlocking schematic diagram of the closing position of the circuit breaker and three-position disconnector mechanism;
wherein, 1, a pull rod; 2 closing the operation baffle; 3, state indication; 4, interlocking lifting plates; 5 interlocking the ejector rod; 6 grounding the operation baffle; 7 interlocking the inserted rods; 8 a front plate; 9 supporting rods; 10 output transmission shaft; 11 a compression spring assembly; 12 lower door interlock plate; 13 a drive plate; 14 a rear plate; 15 closing the operating shaft; 16 closing the limit plate; 17, grounding limiting plates; 18 grounding the operating shaft; 19 a ground drive plate; 20 a middle partition plate; 21 a grounding crank arm; 22 closing the crank arm; 23 closing the driving plate; 24 interlocking baffles; 25 crank arms; 26 stop pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The invention aims to provide a three-station isolating switch operating mechanism, which solves the problems in the prior art and has the characteristics of simple structure, small number of parts, low manufacturing cost, convenience in installation and debugging and the like.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 12, the present invention provides a three-position disconnecting switch operating mechanism, which includes a pull rod 1, an output transmission shaft 10, a transmission plate 13, a closing operation assembly, a grounding operation assembly, an interlocking lifting plate 4 and an interlocking baffle 24, wherein two sides of the output transmission shaft 10, the closing operation assembly and the grounding operation assembly are fixed on a middle partition plate 20 and a rear plate 14 and can freely rotate, the interlocking lifting plate 4 and the interlocking baffle 24 are designed on a front plate 8, the rear plate 14 and the middle partition plate 20 are fixed by a support rod 9, and the middle partition plate 20 and the front plate 8 are fixed by a support rod 9;
in the closing operation component, the closing operation shaft 15 drives the closing drive plate 23 to rotate, the photosynthetic drive plate 23 drives the closing crank arm 22 to rotate, the closing crank arm 22 drives the closing limiting plate 16 to rotate, the closing limiting plate 16 limits the closing crank arm 22, the closing limiting plate 16 drives the transmission plate 13 when rotating, and the transmission plate 13 drives the output transmission shaft 10; the closing drive plate 23 and the closing operation shaft 15 synchronously rotate through flat grooves, the closing crank arm 22, the closing limiting plate 16 and the closing operation shaft 15 are matched through optical axes, the closing crank arm 22 and the closing limiting plate 16 can freely rotate on the closing operation shaft 15, the closing limiting plate 16 is formed by welding a special-shaped plate and a rotating crank arm, convex shafts are arranged on two sides of the closing crank arm 22, the closing drive plate 23 is in contact with the convex shafts on the closing crank arm 22 to drive the closing crank arm 22 to rotate, the convex shafts on the other side of the closing crank arm 22 are in contact with the closing limiting plate 16 to drive the closing limiting plate 16 to rotate, and the closing crank arm 22 is limited through contact with the convex shafts of the closing crank arm 22 after the closing limiting plate 16 is limited;
in the grounding operation assembly, a grounding operation shaft 18 drives a grounding drive plate 19 to rotate, the grounding drive plate 19 drives a grounding crank arm 21 to rotate, the grounding crank arm 21 drives a grounding limiting plate 17 to rotate, the grounding limiting plate 17 limits the grounding crank arm 21, the grounding limiting plate 17 drives a transmission plate 13 when rotating, the transmission plate 13 drives an output transmission shaft 10 to drive the grounding drive plate 19 and the grounding operation shaft 18 to synchronously rotate through a flat groove, the grounding crank arm 21, the grounding limiting plate 17 and the grounding operation shaft 18 are in optical axis fit, the grounding crank arm 21 and the grounding limiting plate 17 can freely rotate on the grounding operation shaft 18, the grounding limiting plate 17 is formed by welding a special-shaped plate and a rotating crank arm, protruding shafts are designed on two sides of the grounding crank arm 21, the grounding drive plate 19 is in contact with the protruding shaft on the grounding crank arm 21 to drive the grounding crank arm 21 to rotate, the protruding shaft on the other side of the grounding crank arm 21 is in contact, after the limit of the grounding limit plate 17, the closing crank arm 22 is limited by contacting with a convex shaft of the grounding crank arm 21; the closing crank arm 22 is connected with the grounding crank arm 21 through a pressure spring component;
a notch up-and-down motion for driving to close operating element and ground connection operating element pivoted pull rod 1 can follow front bezel 8, and chain lifting board 4 can follow front bezel 8's operation up-and-down motion, is fixed with chain ejector pin 5 and chain inserted bar 7 on the chain lifting board 4, and the upper portion of chain lifting board 4 sets up chain baffle 24, and output transmission shaft 10 passes through the crank arm and drives chain baffle 24 side-to-side motion.
Specifically, in the three-position isolating switch operating mechanism, the pull rod 1 moves up and down along the notch of the front plate 8, and when the circuit breaker in the switch cabinet is in a switch-on position, the pull rod 1 drives the switch-off operating baffle 2 and the grounding operating baffle 6 to rotate, so that the three-position isolating switch cannot be operated when the circuit breaker is switched on;
the state indicator 3 is arranged on the output transmission shaft 10 and displays a closing position, an isolating position and a grounding position along with the rotation of the output transmission shaft 10;
the interlocking lifting plate 4 can move up and down along the notch of the front plate 8, an interlocking ejector rod 5 and an interlocking inserted rod 7 are fixed on the interlocking lifting plate 4, an interlocking baffle plate 24 is designed at the upper part of the interlocking lifting plate 4, and the interlocking baffle plate 24 realizes left and right movement by the rotation of the output transmission shaft 10 through a crank arm 25;
as shown in fig. 8, when the interlocking baffle 24 is in the grounding position, the operation hole of the closing operation shaft 15 is blocked and cannot be operated, at this time, the interlocking lifting plate 4 can be lifted, the interlocking ejector rod 5 no longer abuts against the lower door of the switch cabinet, the lower door can be opened, after the lower door is opened, the lower door interlocking plate 12 moves in the front plate direction to abut against the interlocking insertion rod 7, the interlocking lifting plate 4 is kept from falling, at this time, the operation holes of the closing operation shaft 15 and the grounding operation shaft 18 are blocked, and the three-position disconnecting switch cannot be operated;
as shown in fig. 9, when the interlocking baffle 24 is in the isolation position, both the two operation holes of the mechanism can be operated, and at this time, the interlocking lifting plate 4 is shielded by the interlocking baffle and cannot be lifted upwards, and the lower door cannot be opened;
as shown in fig. 10, when the interlocking flap 24 is in the closed position, the operation holes of the grounding operation shaft 18 are blocked and cannot be operated, and at this time, the interlocking lifting plate 4 is blocked by the interlocking flap and cannot be lifted upwards, and the lower door cannot be opened;
as shown in fig. 8-10, the mechanism implements the interlocking of: the three-station mechanism cannot be operated when the lower door is opened;
the output shaft 10 is the final output of the three-station isolating switch mechanism and drives the isolating switch to realize 3 working states, and the output shaft is driven by the rotation of the transmission plate 13;
the transmission plate 13 is provided with a guide groove, so that the closing limiting plate 16 and the grounding limiting plate 17 can normally drive the transmission plate 13 to rotate, the grounding limiting plate 17 is clamped by the guide groove opening in the closing position and cannot rotate, the closing limiting plate 17 is clamped by the guide groove opening in the grounding position and cannot rotate, the interlocking of the closing operation in the closing position and the interlocking of the closing operation in the grounding position are realized like the interlocking baffle plate 24;
the closing limit plate 16 is provided with two limit positions which are driven by the rotation of the closing crank arm 22 and limit the rotation of the closing crank arm 22 in a closing state or an isolating state;
the grounding limit plate 17 is provided with two limit positions, which are driven by the rotation of the grounding crank arm 21 and limit the rotation of the grounding crank arm 21 in a grounding state or an isolation state;
two ends of the pressure spring assembly 11 are fixed on the grounding crank arm 21 and the closing crank arm 22, the angle design ensures that the closing crank arm 22 keeps static under the action of the closing limit plate 16 when the grounding crank arm 21 rotates, and the grounding crank arm 21 keeps static under the action of the grounding limit plate 17 when the closing crank arm 22 rotates;
the angle design of the pressure spring assembly 11 ensures that after the pressure spring assembly 11 rotates for a certain angle, the pressure spring assembly 11 releases pressure spring potential energy to drive the grounding crank arm 21 or the closing crank arm 22 to rotate;
the grounding drive plate 19 is fixed on the grounding operation shaft 18, the grounding operation shaft 18 drives the grounding crank arm 21 to rotate through the grounding drive plate 19, and the grounding drive plate 19 and the grounding operation shaft 18 are designed to have a certain idle stroke, so that operation rebound caused by energy release of the pressure spring assembly 11 in operation is ensured;
the design principle of the closing drive plate 23 is consistent with that of the grounding drive plate 19.
The closing process of the three-station isolating switch mechanism is as follows: at the moment, the mechanism is located at an isolation position, a circuit breaker in a switch cabinet is switched off, a pull rod 1 drives a closing operation baffle 2 to rotate, the closing operation baffle 2 is opened, an operation handle is inserted, an operation closing operation shaft 15 rotates clockwise, the closing operation shaft 15 drives a closing drive plate 23 to rotate, the closing drive plate 23 drives a closing crank arm 22 to rotate, the closing crank arm 22 drives a closing limiting plate 16 to rotate, the closing limiting plate 16 keeps the closing crank arm 22 at a closing position through a limiting pin 26 on a rear plate 14, the closing limiting plate 16 simultaneously drives an output transmission shaft 10 to rotate and limit through a transmission plate 13, and the closing process of the three-station isolation switch mechanism is completed; the operation closing operation shaft 15 can be returned to the isolating position by rotating counterclockwise.
The grounding process of the three-station isolating switch mechanism: at the moment, the mechanism is located at an isolation position, a circuit breaker in a switch cabinet is switched off, a pull rod 1 drives a grounding operation baffle 6 to rotate through closing an operation baffle 2, the grounding operation baffle 6 is opened, an operation handle is inserted, an operation grounding operation shaft 18 rotates anticlockwise, the grounding operation shaft 18 drives a grounding drive plate 19 to rotate, the grounding drive plate 19 drives a grounding crank arm 21 to rotate, the grounding crank arm 21 drives a grounding limiting plate 17 to rotate, the grounding limiting plate 17 keeps the grounding crank arm 21 at the grounding position through a limiting pin 26 on a rear plate 14, the grounding limiting plate 17 simultaneously drives an output transmission shaft 10 to rotate and limit through a transmission plate 13, and the grounding process of the three-station isolation switch mechanism is completed; the closing operating shaft 18 is now rotated clockwise to return to the isolating position.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. The utility model provides a three station isolator operating device which characterized in that: the automatic closing device comprises a pull rod, an output transmission shaft, a transmission plate, a closing operation assembly, a grounding operation assembly, an interlocking lifting plate and an interlocking baffle plate, wherein two sides of the output transmission shaft, the closing operation assembly and the grounding operation assembly are fixed on a middle partition plate and a rear plate and can freely rotate;
in the closing operation assembly, the closing drive plate and the closing operation shaft synchronously rotate through a flat groove, the closing crank arm, the closing limiting plate and the closing operation shaft are matched through an optical axis, the closing crank arm and the closing limiting plate can freely rotate on the closing operation shaft, the closing limiting plate is formed by welding a special-shaped plate and a rotating crank arm, and convex shafts are arranged on two sides of the closing crank arm;
in the grounding operation assembly, a grounding drive plate and a grounding operation shaft synchronously rotate through a flat groove, a grounding crank arm, a grounding limiting plate and the grounding operation shaft are matched through an optical axis, the grounding crank arm and the grounding limiting plate can freely rotate on the grounding operation shaft, the grounding limiting plate is formed by welding a special-shaped plate and a rotating crank arm, and convex shafts are arranged on two sides of the grounding crank arm; the closing crank arm and the grounding crank arm are connected through a pressure spring assembly;
the pull rod can move up and down along the notch of the front plate and the interlocking lifting plate can move up and down along the operation of the front plate, an interlocking ejector rod and an interlocking inserting rod are fixed on the interlocking lifting plate, an interlocking baffle is arranged on the upper portion of the interlocking lifting plate, and the output transmission shaft drives the interlocking baffle to move left and right through the crank arm.
2. The three-position disconnecting switch operating mechanism according to claim 1, wherein: the status indicator is mounted on the output drive shaft and displays a closed position, an isolated position or a grounding position along with the rotation of the output drive shaft.
3. The three-position disconnecting switch operating mechanism according to claim 1, wherein: the rear plate is provided with a limiting pin, and two limiting pins are correspondingly arranged on two sides of the closing limiting plate and the grounding limiting plate.
4. The three-position disconnecting switch operating mechanism according to claim 1, wherein: the transmission plate is provided with a guide groove, and the protruding shaft penetrates through the rear plate and is inserted into the guide groove of the transmission plate so as to drive the transmission shaft to rotate.
5. The three-position disconnecting switch operating mechanism according to claim 1, wherein: two ends of the pressure spring assembly are fixed on the grounding crank arm and the closing crank arm, the closing crank arm keeps static under the action of the closing limiting plate when the grounding crank arm rotates, and the grounding crank arm keeps static under the action of the grounding limiting plate when the closing crank arm rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911042245.XA CN110600315B (en) | 2019-10-30 | 2019-10-30 | Three-station isolating switch operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911042245.XA CN110600315B (en) | 2019-10-30 | 2019-10-30 | Three-station isolating switch operating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110600315A true CN110600315A (en) | 2019-12-20 |
| CN110600315B CN110600315B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911042245.XA Active CN110600315B (en) | 2019-10-30 | 2019-10-30 | Three-station isolating switch operating mechanism |
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| Country | Link |
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| CN (1) | CN110600315B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611625U (en) * | 2010-01-27 | 2010-10-20 | 日升集团有限公司 | Isolating switch with earthing function |
| US20120048692A1 (en) * | 2009-05-26 | 2012-03-01 | Schneider Electric Energy France | latching and locking device inside a switch or a circuit breaker |
| CN103871773A (en) * | 2014-03-25 | 2014-06-18 | 厦门凯能电力科技有限公司 | Three-station operating mechanism |
| CN108320985A (en) * | 2018-02-28 | 2018-07-24 | 默飓电气有限公司 | A kind of on-load switch three position mechanism |
| CN108470657A (en) * | 2018-02-28 | 2018-08-31 | 默飓电气有限公司 | A kind of combined electrical apparatus three position mechanism |
| CN210296211U (en) * | 2019-10-30 | 2020-04-10 | 上海启腾电气股份有限公司 | Three-station isolating switch operating mechanism |
-
2019
- 2019-10-30 CN CN201911042245.XA patent/CN110600315B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120048692A1 (en) * | 2009-05-26 | 2012-03-01 | Schneider Electric Energy France | latching and locking device inside a switch or a circuit breaker |
| CN201611625U (en) * | 2010-01-27 | 2010-10-20 | 日升集团有限公司 | Isolating switch with earthing function |
| CN103871773A (en) * | 2014-03-25 | 2014-06-18 | 厦门凯能电力科技有限公司 | Three-station operating mechanism |
| CN108320985A (en) * | 2018-02-28 | 2018-07-24 | 默飓电气有限公司 | A kind of on-load switch three position mechanism |
| CN108470657A (en) * | 2018-02-28 | 2018-08-31 | 默飓电气有限公司 | A kind of combined electrical apparatus three position mechanism |
| CN210296211U (en) * | 2019-10-30 | 2020-04-10 | 上海启腾电气股份有限公司 | Three-station isolating switch operating mechanism |
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| Publication number | Publication date |
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| CN110600315B (en) | 2024-03-29 |
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