CN112828812A - Electric operating device for switching station knife - Google Patents
Electric operating device for switching station knife Download PDFInfo
- Publication number
- CN112828812A CN112828812A CN202110024707.6A CN202110024707A CN112828812A CN 112828812 A CN112828812 A CN 112828812A CN 202110024707 A CN202110024707 A CN 202110024707A CN 112828812 A CN112828812 A CN 112828812A
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- hole
- head
- sleeve
- knife
- switch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The invention discloses an electric operating device for a switch post switch blade, and aims to provide an electric operating device for a switch post switch blade, which is convenient to operate and can avoid the problem that the internal device of a switch cabinet is damaged due to overlarge rotating torque when the switch blade is switched on and off. It comprises an electric wrench; one end of the tool connector is connected with an output head of the electric wrench through a torque limiter; the tool head, the tool head includes switch knife tool head and ground connection knife tool head, and wherein, switch knife tool head is used for realizing the deciliter to switch knife, and ground connection knife tool head is used for realizing the deciliter to ground connection knife, and the connection that the tool head can be dismantled is on the other end of instrument connector to only install a tool head on the instrument connector once.
Description
Technical Field
The invention relates to an operating device, in particular to an electric operating device for a switching station knife switch.
Background
The switching station is an electric power facility that supplies high-voltage electric power to several surrounding power consumption units, and is located at the next stage of a substation in an electric power system. The switch cabinet equipment of the switching station has various types, but all the equipment comprises a switch knife and a grounding knife, wherein the switch knife of the switching station can be generally punched through a key, namely, electric equipment for driving the switch knife to be switched on and off is arranged in the switching station; however, the grounding blades need to be manually operated to be opened and closed, and similarly, when an electric device for driving the opening and closing blades in the switching station fails, the grounding blades need to be manually operated to open and close the switching blades. At present, the manual operation is to switch on and off the knife switch through the knife switch operating rod, insert the operating sleeve end of the knife switch operating rod into the operating hole, and rotate the operating handle anticlockwise or clockwise to perform the separation operation. Because the number of the switching stations is large, the equipment is different, the switch blades are switched on and off by adopting the conventional manual operation, and the labor intensity is high; and the problem that the torque of the rotating knife switch operating rod is too large to damage the devices in the switch cabinet is easy to occur.
Disclosure of Invention
The invention aims to provide an electric operating device for a switch board of a switching station, which is convenient to operate and can avoid the problem that the internal device of the switch board is damaged due to overlarge rotating torque when the switch board is switched on and off.
The technical scheme of the invention is as follows:
an electric operating device for a switching station blade, comprising:
an electric wrench;
one end of the tool connector is connected with an output head of the electric wrench through a torque limiter;
the tool head, the tool head includes switch knife tool head and ground connection knife tool head, and wherein, switch knife tool head is used for realizing the deciliter to switch knife, and ground connection knife tool head is used for realizing the deciliter to ground connection knife, and the connection that the tool head can be dismantled is on the other end of instrument connector to only install a tool head on the instrument connector once. Therefore, the tool head can be driven to rotate by the electric wrench, so that the switch knife or the grounding knife can be switched on and off, and the operation is convenient, quick and labor-saving; when the switch knife or the grounding knife is switched on and off, the torque limiter can limit the torque transmitted by the electric wrench, so that the problem that the device in the switch cabinet is damaged due to overlarge rotating torque of the electric wrench when the switch knife is switched on and off is solved. On the other hand, because the connection that the instrument head can be dismantled is on the other end of instrument connector, so, can select the switch knife tool head or the ground connection knife tool head of adaptation according to the model of actual switch knife or ground connection knife, come to divide-shut to the knife.
Preferably, the other end of the tool connector is provided with a plug connector, the switch knife tool head comprises a first tail sleeve and a first head sleeve, the first tail sleeve and the first head sleeve are detachably connected into a whole through a first error-proof connecting structure, the first tail sleeve is used for being matched with the plug connector, and the first head sleeve is used for being matched with the switch knife; therefore, the adaptive first head sleeve can be selected according to the actual type of the switch knife, and the adaptive first head sleeve is arranged on the first tail sleeve to switch on and off the switch knife;
the grounding switch blade tool head comprises a second tail sleeve and a second head sleeve, the second tail sleeve and the second head sleeve are connected into a whole through a second mistake-proofing connecting structure in a detachable mode, the second tail sleeve is used for being matched with the plug connector, and the second head sleeve is used for being matched with the switch blade. So, can select the second head sleeve of adaptation according to the model of the ground switch blade of reality, install the second head sleeve of adaptation on the second afterbody sleeve, come to divide and shut ground switch blade.
Preferably, the first error-proofing connection structure comprises a first inserting column arranged on the end surface of the first tail sleeve, a first limiting column arranged on the side surface of the first inserting column, a first inserting hole arranged on the end surface of the first head sleeve, a first arc-shaped limiting hole arranged on the side wall of the first inserting hole and a first limiting column through hole communicated with the end surface of the first head sleeve where the first arc-shaped limiting hole and the first inserting hole are located, the first arc-shaped limiting hole is distributed along the circumferential extension of the first head sleeve, the first inserting column is inserted into the first inserting hole, and the first limiting column moves into the first arc-shaped limiting hole through the first limiting column through hole;
the second error-proofing connecting structure comprises a second inserting column arranged on the end face of the second tail sleeve, a second limiting column arranged on the side face of the second inserting column, a second inserting hole arranged on the end face of the second head sleeve, a second arc-shaped limiting hole arranged on the side wall of the second inserting hole and a second limiting column through hole communicated with the end face of the second head sleeve where the second arc-shaped limiting hole and the second inserting hole are located, the second arc-shaped limiting holes are distributed in a circumferential extending mode along the second head sleeve, the second inserting column is inserted into the second inserting hole, and the second limiting column moves into the second arc-shaped limiting hole through the second limiting column through hole;
the outer diameter of the second plug-in column is larger than the inner diameter of the first plug-in hole, and the distance between the end face of the first plug-in column and the first limiting column is larger than the distance between the bottom face of the second plug-in hole and the second arc-shaped limiting hole. Therefore, the first head sleeve of the switch knife tool head can be prevented from being mistakenly assembled on the second tail sleeve, the second head sleeve of the grounding knife tool head can be prevented from being mistakenly assembled on the first tail sleeve, the head sleeve and the tail sleeve of the switch knife tool head and the grounding knife working head are prevented from being crossed and mistakenly assembled, the first head sleeve of the switch knife working head can only be installed on the first tail sleeve, and the second head sleeve of the grounding knife working head can only be installed on the second tail sleeve, so that mistaken assembly and use errors are avoided.
Preferably, the first head sleeve is coaxial with the first plug hole, and the first tail sleeve is coaxial with the first plug column.
Preferably, the second head sleeve is coaxial with the second plug hole, and the second tail sleeve is coaxial with the second plug column.
Preferably, the plug connector is a regular prism, the inner hole of the first tail sleeve corresponds to the plug connector and is a regular polygonal hole, and the inner hole of the second tail sleeve corresponds to the plug connector and is also a regular polygonal hole.
Preferably, the torque limiter is provided with a connecting hole, the output head of the electric wrench is inserted into the connecting hole, and the output head of the electric wrench is connected with the connecting hole through a key.
Preferably, one end of the tool connector is provided with a connecting column, the connecting column is also inserted into the connecting hole, and the connecting column is in key connection with the connecting hole.
Preferably, the switch knife tool head is marked with a switch knife mark, and the grounding knife tool head is marked with a grounding knife mark. Therefore, the switch knife tool head and the grounding knife tool head can be identified through the identification, so that the correct tool head can be selected in the actual operation.
Preferably, the switch knife tool head is made of metal.
Preferably, the ground blade tool bit is made of a metal material.
The invention has the beneficial effects.
Drawings
Fig. 1 is a schematic view showing a structure of an electric operation device of a switching station blade of the present invention.
Fig. 2 is a schematic sectional view of a tool head of a switch blade of the electric operating device of the switch blade of the switching station of the present invention.
Fig. 3 is a schematic sectional view of a ground knife tool head of the electric operating device of the switching station knife of the present invention.
In the figure:
an electric wrench 1;
a torque limiter 2;
a tool connector 3 and a plug connector 3.1;
the switch knife tool head 4, a first head sleeve 4.1, a first tail sleeve 4.2, a first limit column 4.3, a first arc-shaped limit hole 4.4, a first limit column through hole 4.5 and a first plug-in column 4.6;
earthing switch blade tool head 5, second head sleeve 5.1, second afterbody sleeve 5.2, the spacing post of second 5.3, the spacing hole of second arc 5.4, the spacing post of second is crossed mouthful 5.5, second plug-in post 5.6.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1, an electric operating device for a switching station switch comprises an electric wrench 1, a tool connector 3 and a tool bit. One end of the tool connector is connected with an output head of the electric wrench through a torque limiter 2. The tool head comprises a switch knife tool head 4 and a grounding knife tool head 5, wherein the switch knife tool head is used for realizing the on-off of the switch knife, and the grounding knife tool head is used for realizing the on-off of the grounding knife. The tool head can be detachably connected to the other end of the tool connector, and only one tool head is installed on the tool connector at the last time.
Therefore, the tool head can be driven to rotate by the electric wrench, so that the switch knife or the grounding knife can be switched on and off, and the operation is convenient, quick and labor-saving; when the switch knife or the grounding knife is switched on and off, the torque limiter can limit the torque transmitted by the electric wrench, so that the problem that the device in the switch cabinet is damaged due to overlarge rotating torque of the electric wrench when the switch knife is switched on and off is solved. On the other hand, because the connection that the instrument head can be dismantled is on the other end of instrument connector, so, can select the switch knife tool head or the ground connection knife tool head of adaptation according to the model of actual switch knife or ground connection knife, come to divide-shut to the knife.
In this embodiment, the tool head of the switch knife is made of metal; of course, the tool head of the switch knife can also be made of plastic. The grounding knife tool head is made of metal; of course, the grounding knife tool head may be made of plastic.
Further, as shown in fig. 1, 2 and 3, the other end of the tool connector is provided with a plug connector 3.1. Switch knife tool head 4 includes first afterbody sleeve 4.2 and first head sleeve 4.1, and first afterbody sleeve is as an organic whole with the connection that first head sleeve can be dismantled through first mistake proofing connection structure. First afterbody sleeve is used for cooperating with the bayonet joint, and is concrete, and the bayonet joint inserts in the first afterbody sleeve to the realization is connected switch sword tool bit on the bayonet joint of the other end of instrument connector. The first head sleeve is used for being matched with the switch knife. So, can select the first head sleeve of adaptation according to the model of the switch knife of reality, install the first head sleeve of adaptation on first afterbody sleeve, come to divide-shut switch knife.
Grounding switch blade tool head 5 includes second afterbody sleeve 5.2 and second head sleeve 5.1, and the connection that second afterbody sleeve and second head sleeve can be dismantled through second mistake proofing connection structure is as an organic whole. The second afterbody sleeve is used for cooperating with the bayonet joint, and is concrete, and the bayonet joint inserts in the second afterbody sleeve to the realization is connected ground connection plug tool bit on the bayonet joint of the other end of instrument connector. The second head sleeve is used for being matched with the switch knife. So, can select the second head sleeve of adaptation according to the model of the ground switch blade of reality, install the second head sleeve of adaptation on the second afterbody sleeve, come to divide and shut ground switch blade.
Further, as shown in fig. 1, fig. 2, and fig. 3, the first error-proofing connection structure includes a first plug-in post 4.6 disposed on the end surface of the first tail sleeve, a first limit post 4.3 disposed on the side surface of the first plug-in post, a first plug-in hole disposed on the end surface of the first head sleeve, a first arc-shaped limit hole 4.4 disposed on the side wall of the first plug-in hole, and a first limit post opening 4.5 communicating the first arc-shaped limit hole with the end surface of the first head sleeve where the first plug-in hole is disposed. The first arc-shaped limiting holes extend and are distributed along the circumferential direction of the first head sleeve, and the first limiting column through opening extends along the axis of the first head sleeve. The first inserting column is inserted into the first inserting hole, and the first limiting column moves into the first arc-shaped limiting hole through the first limiting column opening.
The second mistake proofing connection structure comprises a second inserting-connection column 5.6 arranged on the end face of the second tail sleeve, a second limiting column 5.3 arranged on the side face of the second inserting-connection column, a second inserting-connection hole arranged on the end face of the second head sleeve, a second arc-shaped limiting hole 5.4 arranged on the side wall of the second inserting-connection hole and a second limiting column through hole 5.5 communicated with the second arc-shaped limiting hole and the end face of the second head sleeve where the second inserting-connection hole is located. The second arc-shaped limiting holes extend and are distributed along the circumferential direction of the second head sleeve, and the second limiting column through opening extends along the axis of the second head sleeve. The second inserting column is inserted into the second inserting hole, and the second limiting column moves into the second arc-shaped limiting hole through the second limiting column opening.
The outer diameter of the second plug column is larger than the inner diameter of the first plug hole; therefore, the first head sleeve of the switch knife tool head can be prevented from being mistakenly arranged on the second tail sleeve of the grounding knife tool head. The distance between the end surface of the first inserting column and the first limiting column is larger than the distance between the bottom surface of the second inserting hole and the second arc-shaped limiting hole; therefore, the second head sleeve of the grounding switch knife tool head can be prevented from being mistakenly assembled on the first tail sleeve of the switch knife tool head, the head sleeve and the tail sleeve of the switch knife tool head and the grounding switch knife working head are assuredly prevented from being crossed and mistakenly assembled, the first head sleeve of the switch knife working head can only be installed on the first tail sleeve, and the second head sleeve of the grounding switch knife working head can only be installed on the second tail sleeve, so that mistaken assembly and use errors are avoided.
Furthermore, the first head sleeve is coaxial with the first plug hole, and the first tail sleeve is coaxial with the first plug column. The second head sleeve is coaxial with the second plug hole, and the second tail sleeve is coaxial with the second plug column.
The plug is a regular prism, and in this embodiment, the plug is a regular quadrangular prism. The inner hole of the first tail sleeve corresponds to the plug connector and is a regular polygon hole, and the inner hole of the second tail sleeve corresponds to the plug connector and is also a regular polygon hole.
Furthermore, a connecting hole is formed in the torque limiter, an output head of the electric wrench is inserted into the connecting hole, and the output head of the electric wrench is connected with the connecting hole through a key. One end of the tool connector is provided with a connecting column, the connecting column is also inserted into the connecting hole, and the connecting column is in key connection with the connecting hole.
Furthermore, switch knife tool heads are marked with switch knife marks, and grounding knife tool heads are marked with grounding knife marks. Therefore, the switch knife tool head and the grounding knife tool head can be identified through the identification, so that the correct tool head can be selected in the actual operation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. An electric operation device for a switching station knife, comprising:
an electric wrench;
one end of the tool connector is connected with an output head of the electric wrench through a torque limiter;
the tool head, the tool head includes switch knife tool head and ground connection knife tool head, and wherein, switch knife tool head is used for realizing the deciliter to switch knife, and ground connection knife tool head is used for realizing the deciliter to ground connection knife, and the connection that the tool head can be dismantled is on the other end of instrument connector to only install a tool head on the instrument connector once.
2. The switching station switch blade electric operating device as claimed in claim 1, wherein the other end of the tool connector is provided with a plug connector, the switching station switch blade tool head comprises a first tail sleeve and a first head sleeve, the first tail sleeve and the first head sleeve are detachably connected into a whole through a first error-proof connecting structure, the first tail sleeve is used for being matched with the plug connector, and the first head sleeve is used for being matched with the switching station switch blade;
the grounding switch blade tool head comprises a second tail sleeve and a second head sleeve, the second tail sleeve and the second head sleeve are connected into a whole through a second mistake-proofing connecting structure in a detachable mode, the second tail sleeve is used for being matched with the plug connector, and the second head sleeve is used for being matched with the switch blade.
3. The switching station switch blade electric operating device according to claim 2, wherein the first error-proofing connection structure comprises a first plug-in post disposed on an end surface of the first tail sleeve, a first limit post disposed on a side surface of the first plug-in post, a first plug-in hole disposed on an end surface of the first head sleeve, a first arc-shaped limit hole disposed on a side wall of the first plug-in hole, and a first limit post through hole communicating the first arc-shaped limit hole with the end surface of the first head sleeve where the first plug-in hole is located, the first arc-shaped limit hole is distributed along a circumferential direction of the first head sleeve, the first plug-in post is inserted into the first plug-in hole, and the first limit post moves into the first arc-shaped limit hole through the first limit post through hole;
the second error-proofing connecting structure comprises a second inserting column arranged on the end face of the second tail sleeve, a second limiting column arranged on the side face of the second inserting column, a second inserting hole arranged on the end face of the second head sleeve, a second arc-shaped limiting hole arranged on the side wall of the second inserting hole and a second limiting column through hole communicated with the end face of the second head sleeve where the second arc-shaped limiting hole and the second inserting hole are located, the second arc-shaped limiting holes are distributed in a circumferential extending mode along the second head sleeve, the second inserting column is inserted into the second inserting hole, and the second limiting column moves into the second arc-shaped limiting hole through the second limiting column through hole;
the outer diameter of the second plug-in column is larger than the inner diameter of the first plug-in hole, and the distance between the end face of the first plug-in column and the first limiting column is larger than the distance between the bottom face of the second plug-in hole and the second arc-shaped limiting hole.
4. The electrical operation device of claim 3, wherein the first head sleeve is coaxial with the first insertion hole and the first tail sleeve is coaxial with the first insertion post.
5. The electric operating device of claim 3 or 4, wherein the second head sleeve is coaxial with the second insertion hole, and the second tail sleeve is coaxial with the second insertion post.
6. The electric operating device for the switching station switch blade according to claim 2, 3 or 4, wherein the plug connector is a regular prism, the inner hole of the first tail sleeve corresponds to the plug connector and is a regular polygonal hole, and the inner hole of the second tail sleeve corresponds to the plug connector and is also a regular polygonal hole.
7. The electric operating device for the switching station knife according to claim 1, 2, 3 or 4, wherein the torque limiter is provided with a connecting hole, the output head of the electric wrench is inserted into the connecting hole, and the output head of the electric wrench is connected with the connecting hole through a key.
8. The electric operating device for the switching station knife switch according to claim 7, wherein a connecting column is arranged at one end of the tool connector, the connecting column is also inserted into the connecting hole, and the connecting column is connected with the connecting hole through a key.
9. The electric operating device for the switch board knife according to claim 1, 2, 3 or 4, wherein the switch knife tool head is marked with a switch knife mark, and the grounding knife tool head is marked with a grounding knife mark.
10. The electric operating device for the switch board knife according to claim 1, 2, 3 or 4, wherein the grounding knife tool head is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110024707.6A CN112828812B (en) | 2021-01-08 | 2021-01-08 | Electric operating device for switching station knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110024707.6A CN112828812B (en) | 2021-01-08 | 2021-01-08 | Electric operating device for switching station knife |
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| Publication Number | Publication Date |
|---|---|
| CN112828812A true CN112828812A (en) | 2021-05-25 |
| CN112828812B CN112828812B (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110024707.6A Active CN112828812B (en) | 2021-01-08 | 2021-01-08 | Electric operating device for switching station knife |
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| CN (1) | CN112828812B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070180959A1 (en) * | 2006-02-08 | 2007-08-09 | Makita Corporation | Tightening tool |
| CN204621926U (en) * | 2015-01-27 | 2015-09-09 | 浙江武义工力电器有限公司 | The electric wrench of mechanical adjustment moment of torsion |
| CN108058141A (en) * | 2018-02-07 | 2018-05-22 | 肖学军 | A kind of detachable multifunctional electric combined tool |
| CN211332972U (en) * | 2019-11-26 | 2020-08-25 | 中国船舶重工集团公司第七一九研究所 | Quick connector dismounting device |
| CN214378070U (en) * | 2021-01-08 | 2021-10-08 | 国网浙江省电力有限公司江山市供电公司 | Electric operating device for switching station knife switch |
-
2021
- 2021-01-08 CN CN202110024707.6A patent/CN112828812B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070180959A1 (en) * | 2006-02-08 | 2007-08-09 | Makita Corporation | Tightening tool |
| CN204621926U (en) * | 2015-01-27 | 2015-09-09 | 浙江武义工力电器有限公司 | The electric wrench of mechanical adjustment moment of torsion |
| CN108058141A (en) * | 2018-02-07 | 2018-05-22 | 肖学军 | A kind of detachable multifunctional electric combined tool |
| CN211332972U (en) * | 2019-11-26 | 2020-08-25 | 中国船舶重工集团公司第七一九研究所 | Quick connector dismounting device |
| CN214378070U (en) * | 2021-01-08 | 2021-10-08 | 国网浙江省电力有限公司江山市供电公司 | Electric operating device for switching station knife switch |
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| CN112828812B (en) | 2022-08-23 |
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