CN111564781B - Outdoor switch maintenance device - Google Patents
Outdoor switch maintenance device Download PDFInfo
- Publication number
- CN111564781B CN111564781B CN202010444636.0A CN202010444636A CN111564781B CN 111564781 B CN111564781 B CN 111564781B CN 202010444636 A CN202010444636 A CN 202010444636A CN 111564781 B CN111564781 B CN 111564781B
- Authority
- CN
- China
- Prior art keywords
- lifting
- lubricating oil
- rod
- telescopic rod
- disconnecting link
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000012423 maintenance Methods 0.000 title claims abstract description 47
- 239000010687 lubricating oil Substances 0.000 claims abstract description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 abstract description 3
- 239000011810 insulating material Substances 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
An outdoor disconnecting link maintenance device comprises a supporting base, a lifting part fixedly connected with the supporting base and a maintenance part in threaded fit with the lifting part; the maintenance part comprises a mobile platform, an electric lifting rod fixedly connected with the mobile platform, and a telescopic rod hinged with the electric lifting rod, wherein the lifting platform is arranged on the supporting base, the mobile platform is arranged on the lifting platform, and the telescopic rod and a hose are arranged on the mobile platform. When the disconnecting link is maintained, only the telescopic rod and the hose are in contact with the disconnecting link, so that the telescopic rod is made of insulating ceramic, and the hose is made of insulating material. Therefore, when maintenance is carried out, power equipment can be kept without power failure, the other part of the maintenance part comprises lubricating oil and a lubricating oil pump, and the part works after dust and surface layer rust accumulated on the disconnecting link are blown clean. After flowing out from the lubricating oil pump, the lubricating oil flows to the position required by the disconnecting link through the pipeline, and the whole process does not need manual dust removal, rust removal and lubrication, and is safe and reliable.
Description
Technical Field
The invention relates to a power equipment maintenance device, in particular to an outdoor disconnecting link maintenance device.
Background
The knife switch is generally a high-voltage isolating switch, i.e. an isolating switch with rated voltage of 1kV or above, usually referred to as an isolating switch for short, and is the most used electrical appliance in high-voltage switching electrical appliances.
With the development of national economy, the power industry is rapidly developed, but the increase of the number of the employees of the power enterprise is far from the development of a power system and the increase of equipment, and a large amount of manpower and material resources are required to be invested in the regular maintenance, so that the requirements of power system reformation and man-saving and efficiency improvement cannot be met. The development of a power grid faces the requirements of high power supply reliability, high load density and high power quality, the requirement of a user on power failure time is more and more strict, the power failure of an important key line is difficult to arrange, and the power failure maintenance opportunities of a disconnecting link are less and less.
The knife switch of outdoor power equipment is exposed to the sun by wind for a long time, and an operating mechanism accumulates dust and rusts. Sometimes, the knife switch is not opened or closed in place during operation. When normal refueling maintenance is carried out, only power failure treatment can be carried out, labor and force are wasted, and danger is caused.
Disclosure of Invention
The invention aims to provide an outdoor disconnecting link maintenance device, which can be used for performing maintenance work such as dust removal, oiling and the like on outdoor power equipment without power failure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an outdoor disconnecting link maintenance device comprises a supporting base, a lifting part fixedly connected with the supporting base and a maintenance part in threaded fit with the lifting part;
the maintenance part comprises a mobile station, an electric lifting rod fixedly connected with the mobile station, and a telescopic rod hinged with the electric lifting rod.
Furthermore, the electric lifting rod comprises a fixed rod and a lifting rod which is connected with the fixed rod in a sliding manner.
One branch at the tail end of the telescopic rod is hinged at the upper end of the fixed rod, and the other branch at the tail end of the telescopic rod is hinged at the upper end of the lifting rod.
Furthermore, the maintenance part also comprises a lubricating oil pump fixedly connected with the mobile platform, an air blower fixedly connected with the mobile platform, a lubricating oil box fixedly connected to the upper side of the lubricating oil pump, a lubricating oil pipeline led out from the lubricating oil pump and a blowing pipeline led out from the air blower; the lubricating oil pump and the air blower are arranged at two ends of the upper surface of the mobile platform in the same direction.
Furthermore, the lubricating oil pipeline and the blowing pipeline are made of insulating hoses, and the telescopic rod is made of insulating ceramics.
Furthermore, the number of the telescopic rods and the number of the electric lifting rods are two, and the two electric lifting rods are respectively arranged in front of the lubricating oil pump and the air blower.
Furthermore, the front ends of the two telescopic rods are respectively and fixedly connected with the lubricating oil pipeline and the air blowing pipeline.
Further, the lifting part comprises a lifting motor, a vertical ball screw arranged at the upper end of the lifting motor and a lifting platform in threaded fit with the vertical ball screw.
Furthermore, the number of the lifting motors and the number of the vertical ball screws are two, and the lifting motors are vertically and fixedly connected to the middle positions of two ends of the upper plane of the supporting base.
Furthermore, a moving motor and a horizontal ball screw arranged at the left end of the moving motor are also arranged on the lifting platform.
Furthermore, the moving motor is horizontally and fixedly connected to the middle position of the right side of the upper surface of the lifting table, a fixed seat is arranged at the right end of the horizontal ball screw, and a supporting seat is arranged at the left end of the horizontal ball screw.
Furthermore, four universal wheels are arranged on the lower side of the supporting base.
The invention has the following beneficial effects:
the invention adopts the technical scheme that a lifting platform is arranged on a supporting base, a moving platform is arranged on the lifting platform, and a telescopic rod and a hose are arranged on the moving platform. When the disconnecting link is maintained, only the telescopic rod and the hose are in contact with the disconnecting link, so that the telescopic rod is made of insulating ceramic, and the hose is made of insulating material. Therefore, the power equipment can be maintained without power failure. Four universal wheels are arranged on the lower side of the supporting base. After the user pushes the telescopic handle to a proper position, the motor is started to adjust the positions of the lifting platform and the moving platform, and then the length of the telescopic rod is adjusted, so that the hose at the front end of the telescopic rod is in contact with the disconnecting link for maintenance. The maintenance part is divided into two parts, one part comprises a blower, and the part works first. The blower blows a dry, high-speed airflow. The dry, high-speed air flow blows off the dust and surface rust accumulated on the knife switch through the hose. Another part of the maintenance part includes lubricating oil and a lubricating oil pump. The dust and surface rust accumulated on the knife switch are blown clean, and then the part works again. After the lubricating oil flows out of the lubricating oil pump, the lubricating oil flows to the position required by the disconnecting link through the pipeline. The whole process does not need manual dust cleaning, rust removal and lubrication, and is very safe.
Drawings
FIG. 1 is a side view of a maintenance structure according to an embodiment;
FIG. 2 is a front view of a structure of a maintenance part of the embodiment;
FIG. 3 is a schematic structural view of a supporting base and a lifting platform in the second embodiment;
FIG. 4 is a side view of the support base and the lift table of the second embodiment;
FIG. 5 is a schematic structural diagram of an outdoor disconnecting link maintenance device according to a second embodiment of the present invention;
fig. 6 is a right-side schematic view of the outdoor knife-switch maintenance device in fig. 5.
In the attached drawings, 1, a supporting base, 2, a lifting motor, 3, a vertical ball screw, 4, a lifting platform, 5, a moving motor, 6, a fixed seat, 7, a supporting seat, 8, a motor fixed seat, 9, a moving platform, 10, an air blower, 11, a fixed rod, 12, a lifting rod, 13, a telescopic rod, 14, an air blowing pipeline, 15, a lubricating oil pipeline, 16, a lubricating oil box, 17, a lubricating oil pump, 18, a horizontal ball screw, 19 and a universal wheel.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Example one
As shown in fig. 1 and 2, an outdoor disconnecting link maintenance device according to an embodiment of the present invention is used for maintaining a disconnecting link of an outdoor power device without power outage, and includes a supporting base, a lifting portion fixedly connected to the supporting base, and a maintenance portion in threaded engagement with the lifting portion, where the maintenance includes cleaning dust and surface rust accumulated on the disconnecting link device and adding lubricating oil.
The outdoor disconnecting link maintenance device provided by the embodiments of the invention comprises a maintenance part.
In this embodiment, specifically, as shown in fig. 1, the maintenance part includes a movable table 9, a lubricant pump 17 is provided at a left end of an upper surface of the movable table 9, and an air blower 10 is provided at an opposite right end thereof. The lubricant pump 17 and the blower 10 are fixed to the moving stage 9 by screws.
As shown in fig. 2, a lubricating oil pipe 15 and a blowing pipe 14 are provided at the front ends of the lubricating oil pump 17 and the blower 10, respectively. The blower 10 is used to blow a high-speed, dry gas stream. An electric lifting rod is arranged in front of the lubricating oil pump 17 and the blower 10. The electric lifting rod is vertically arranged on the upper surface of the mobile station 9, the electric lifting rod comprises a fixed rod 11 and a lifting rod 12 moving along the direction of the fixed rod, and the lower end of the fixed rod 11 is fixed on the mobile station by screws.
As shown in fig. 1, the maintenance part according to some embodiments of the present invention further includes a telescopic rod 13 having a multi-link structure, wherein the end of the telescopic rod 13 is divided into two branches, one branch is hinged to the upper end of the fixed rod 11, and the other branch of the end of the telescopic rod 13 is hinged to the upper end of the lifting rod 11, when the lifting rod 12 moves up and down along the fixed rod 11 in a substantially vertical direction, the telescopic rod 13 is driven to extend and retract in another direction substantially orthogonal to the vertical direction.
In this embodiment, specifically, the front end of the telescopic rod 13 is fixed with the front ends of the lubricating oil pipeline 15 and the air blowing pipeline 14 by using a binding tape, and the front ends of the lubricating oil pipeline 15 and the air blowing pipeline 14 can be synchronously driven to move to the designated position by adjusting the position of the telescopic rod 13.
When the included angle between two branches at the tail end of the telescopic rod 13 is one hundred eighty degrees, the length of the telescopic rod 13 is shortest, and the height of the lifting rod 12 is highest. When the included angle between two branches at the tail end of the telescopic rod 13 is zero degree, the length of the telescopic rod 13 is the longest, and the height of the lifting rod 12 is the lowest.
When the device is used, the lubricating oil pipeline 15 and the air blowing pipeline 14 are made of insulating hoses, and the telescopic rod 13 is made of insulating ceramics. In use, the lifting rod 12 is lowered and the telescopic rod 13 is extended. When the front end of the telescopic rod 13 contacts the knife gate device, the lifting rod 12 stops descending. The blowing duct 14 blows dry high-speed airflow to blow away dust and surface rust accumulated on the disconnecting link device. The lubricating oil conduit 15 then feeds the lubricating oil to the knife-switch apparatus for lubrication. When not in use, the lifting rod is lifted, and the telescopic rod 13 is retracted to the shortest state.
Example two
The difference between this embodiment and the first embodiment described above with reference to fig. 3-6 is that the outdoor disconnecting link maintenance device of this embodiment further includes a supporting base 1 and a lifting portion. Four universal wheels are arranged on the lower surface of the supporting base 1. The lifting part is arranged on the upper surface of the supporting base 1. The lifting part comprises a lifting motor 2, a vertical ball screw 3, a lifting platform 4, a moving motor 5 and a horizontal ball screw 18.
In this embodiment, the number of the lifting motors 2 and the vertical ball screws 3 is two, and the lifting motors 2 are respectively arranged at the middle positions of the left side and the right side of the upper surface of the supporting base 1. The lifting motor 2 is vertically arranged, and the lower end of the lifting motor is fixed on the supporting base 1 through bolts. The vertical ball screw 3 is arranged at the upper end of the lifting motor 2. A lifting table 4 is provided on the vertical ball screw 3. The lifting platform 4 is horizontally arranged, and the lifting platform 4 is in threaded fit with the vertical ball screw 3.
The movable motor 5 is fixed on the lifting platform 4 by a motor fixing seat 8. The motor fixing seat 8 is fixed on the lifting platform 4 by bolts. The moving motor 5 is provided at a position on the left side of the upper surface of the lift table 4. A horizontal ball screw is provided at the left end of the moving motor 5. A support base 7 is provided at the left end of the horizontal ball screw 18, and a fixing base 6 is provided at the right end of the horizontal ball screw 18 and the right side of the moving motor 5. The moving table 9 and the horizontal ball screw 18 in embodiment 1 are screw-engaged.
When the lifting platform is used, a user pushes the lifting platform to a disconnecting link of outdoor power equipment needing to be maintained, and the lifting motor 2 is started to lift the lifting platform 4 to the height of the disconnecting link. And then starting the moving motor 5, adjusting the position of the moving platform 9 to enable the position of the moving platform 9 to correspond to the position of the disconnecting link, lowering the lifting rod 12 to extend the telescopic rod 13 out, and stopping extending after the front end of the telescopic rod 13 contacts the disconnecting link.
When the maintenance part works, the blower 10 is started firstly, the blower blows dry high-speed airflow, and the airflow flows to the knife switch through the air blowing pipeline 14. The dry high velocity air flow will cause dust and surface rust to build up on the knife gate. After dust and surface rust accumulated on the disconnecting link are blown clean, the lubricating oil pump 17 is started, lubricating oil flows out from the lubricating oil pump 17 and flows onto the disconnecting link through the lubricating oil pipeline 15, and the disconnecting link is lubricated.
It is again emphasized that the embodiments described herein are merely examples of implementations, rather than examples of implementations, and that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention as defined by the claims. Any changes obvious to those skilled in the art from the embodiments of the present invention, which are made under the design idea of the present invention, are within the protection scope of the present invention.
Claims (10)
1. An outdoor disconnecting link maintenance device is characterized by comprising a supporting base (1), a lifting part fixedly connected with the supporting base (1), and a maintenance part in threaded fit with the lifting part;
the maintenance part comprises a mobile station (9), an electric lifting rod fixedly connected with the mobile station (9), and a telescopic rod (13) hinged with the electric lifting rod;
the electric lifting rod comprises a fixed rod (11) fixedly connected with the mobile station (9) and a lifting rod (12) slidably connected with the upper end of the fixed rod (11);
the telescopic rod (13) is of a multi-connecting-rod structure, the tail end of the telescopic rod is divided into two branches, one branch is hinged to the upper end of the fixed rod (11), and the other branch is hinged to the upper end of the lifting rod (12); when the lifting rod (12) moves in a vertical direction along the fixed rod (11), the telescopic rod (13) is driven to extend and retract in the other direction orthogonal to the vertical direction;
the maintenance part also comprises a lubricating oil pump (17) fixedly connected with the mobile platform (9), an air blower (10) fixedly connected with the mobile platform (9), a lubricating oil box (16) fixedly connected to the upper side of the lubricating oil pump (17), a lubricating oil pipeline (15) led out from the lubricating oil pump (17) and an air blowing pipeline (14) led out from the air blower (10);
the lubricating oil pipeline (15) and the air blowing pipeline (14) are insulating hoses; the number of the telescopic rods (13) and the number of the electric lifting rods are two, and the front ends of the two telescopic rods (13) are respectively fixedly connected with the lubricating oil pipeline (15) and the air blowing pipeline (14).
2. The outdoor disconnecting link maintenance device according to claim 1, wherein when the included angle between two branches at the tail end of the telescopic rod (13) is one hundred eighty degrees, the length of the telescopic rod (13) is shortest, and the height of the lifting rod (12) is highest; when the included angle between two branches at the tail end of the telescopic rod (13) is zero degree, the length of the telescopic rod (13) is the longest, and the height of the lifting rod (12) is the lowest.
3. An outdoor switch maintenance device according to claim 1, characterized in that the lubricating oil pump (17) and the blower (10) are arranged in the same direction at both ends of the upper surface of the mobile station (9); when the telescopic rods (13) are adjusted, the front ends of the two telescopic rods (13) respectively and synchronously drive the front ends of the lubricating oil pipeline (15) and the air blowing pipeline (14) to move to the designated positions.
4. An outdoor knife-switch maintenance device according to claim 1, characterized in that the material of the telescopic rod (13) comprises insulating ceramic.
5. An outdoor knife-switch maintenance device according to claim 1, characterized in that two said electric lifting rods are arranged in front of the lubricating oil pump (17) and the blower (10), respectively.
6. An outdoor disconnecting link maintenance device according to any one of claims 1 to 5, characterized in that the lifting part comprises a lifting motor (2), a vertical ball screw (3) arranged at the upper end of the lifting motor (2) and a lifting platform (4) in threaded fit with the vertical ball screw (3).
7. An outdoor disconnecting link maintenance device according to claim 6, characterized in that the number of the lifting motors (2) and the number of the vertical ball screws (3) are two, and the two lifting motors (2) are respectively vertically and fixedly connected to the middle positions of the two ends of the upper plane of the supporting base (1).
8. An outdoor disconnecting link maintenance device according to claim 7, characterized in that a moving motor (5) and a horizontal ball screw (18) arranged at the left end of the moving motor (5) are further arranged on the lifting platform (4).
9. An outdoor disconnecting link maintenance device according to claim 8, characterized in that the moving motor (5) is horizontally and fixedly connected to the middle position of the right side of the upper surface of the lifting table (4), a fixed seat (6) is arranged at the right end of the horizontal ball screw (18), and a supporting seat (7) is arranged at the left end of the horizontal ball screw (18).
10. An outdoor knife-switch maintenance device according to claim 1, characterized in that the underside of the support base (1) is provided with four universal wheels (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010444636.0A CN111564781B (en) | 2020-05-23 | 2020-05-23 | Outdoor switch maintenance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010444636.0A CN111564781B (en) | 2020-05-23 | 2020-05-23 | Outdoor switch maintenance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111564781A CN111564781A (en) | 2020-08-21 |
| CN111564781B true CN111564781B (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010444636.0A Active CN111564781B (en) | 2020-05-23 | 2020-05-23 | Outdoor switch maintenance device |
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| Country | Link |
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| CN (1) | CN111564781B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060131A1 (en) * | 2008-12-03 | 2010-06-10 | Herbert Heutle | Maintenance kit for cleaning electrical switch, has spraying, blowing-out and oil lances that are arranged in demountable manner for transport in lance parts, where lance parts comprise length of smaller than specific range |
| CN203103810U (en) * | 2013-01-15 | 2013-07-31 | 江苏省电力公司苏州供电公司 | Current transformer replacing platform |
| CN203521969U (en) * | 2013-09-22 | 2014-04-02 | 国家电网公司 | Touch finger maintenance device of isolation switch |
| CN204067976U (en) * | 2014-09-10 | 2014-12-31 | 国家电网公司 | The charged automatic flushing device of a kind of transformer station's disconnecting link |
| CN204508689U (en) * | 2015-03-27 | 2015-07-29 | 夏成业 | A kind of apparatus for automatically lifting of field work power transformation box |
-
2020
- 2020-05-23 CN CN202010444636.0A patent/CN111564781B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008060131A1 (en) * | 2008-12-03 | 2010-06-10 | Herbert Heutle | Maintenance kit for cleaning electrical switch, has spraying, blowing-out and oil lances that are arranged in demountable manner for transport in lance parts, where lance parts comprise length of smaller than specific range |
| CN203103810U (en) * | 2013-01-15 | 2013-07-31 | 江苏省电力公司苏州供电公司 | Current transformer replacing platform |
| CN203521969U (en) * | 2013-09-22 | 2014-04-02 | 国家电网公司 | Touch finger maintenance device of isolation switch |
| CN204067976U (en) * | 2014-09-10 | 2014-12-31 | 国家电网公司 | The charged automatic flushing device of a kind of transformer station's disconnecting link |
| CN204508689U (en) * | 2015-03-27 | 2015-07-29 | 夏成业 | A kind of apparatus for automatically lifting of field work power transformation box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111564781A (en) | 2020-08-21 |
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