CN112290290B - Cable head earth connection plug - Google Patents
Cable head earth connection plug Download PDFInfo
- Publication number
- CN112290290B CN112290290B CN202011134316.1A CN202011134316A CN112290290B CN 112290290 B CN112290290 B CN 112290290B CN 202011134316 A CN202011134316 A CN 202011134316A CN 112290290 B CN112290290 B CN 112290290B
- Authority
- CN
- China
- Prior art keywords
- cable head
- arc extinguishing
- opening
- head
- plug
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/622—Screw-ring or screw-casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/717—Structural association with built-in electrical component with built-in light source
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cable Accessories (AREA)
Abstract
The invention discloses a cable head grounding wire plug, and relates to the technical field of power equipment accessories. The cable head grounding wire plug can be matched with a cable head in an inserting mode, the cable head comprises an insulating body and a conductive rod which penetrates through the insulating body and extends to the outside of the insulating body, the cable head grounding wire plug comprises a body, a head part, an arc extinguishing device and a grounding wire, the head part is a conical shell with a hollow inner part and comprises a first opening and a second opening, the outer diameter of the first opening is smaller than that of the second opening, and the first opening is connected with the body; the inner circumferential surface of the head is provided with threads, and the insulating body is arranged in the head in a penetrating way and is in threaded connection with the threads; the arc extinguishing device is fixedly arranged in the body and can be abutted against the conducting rod, and the arc extinguishing device is used for eliminating electric arcs; the body is worn to locate by the earth connection, and the one end and the arc extinguishing device of earth connection are connected, and the other end is connected with ground. The cable head grounding wire plug can be suitable for cable heads of various models, and is reliable in insertion and not easy to loosen.
Description
Technical Field
The invention relates to the technical field of power equipment accessories, in particular to a cable head grounding wire plug.
Background
Along with social development, power supply reliability is used as an important index of power quality of a power supply system, and the satisfaction degree of the power industry on national economic power requirements is reflected. At present, cable distribution boxes without switches are installed during construction of numerous early power grids, and the cable distribution boxes are not provided with switches capable of switching on and off circuits in the process of equipment maintenance, so that the power failure maintenance range is enlarged in the power failure process. Therefore, the branch cable head to be overhauled is pulled out by interrupting the superior switch, so that the purpose of isolation is achieved. In the operation process of pulling out the cable head in the current power failure, the pulled out cable head is exposed and isolated from a system, but the phenomenon of back power transmission caused by power generation of a user still exists, so that a corresponding grounding wire is needed for protection and grounding. The ground wire in the prior art cannot be suitable for cable heads of various models, and the problem of loose caused by infirm splicing easily occurs in the splicing process.
Disclosure of Invention
The invention aims to provide a cable head grounding wire plug which can be suitable for various types of cable heads, is reliable in plugging and is not easy to loosen.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a cable head earth connection plug, can with the cooperation of pegging graft of cable head, the cable head includes insulator and wears to locate insulator just extends to the outside conducting rod of insulator, wherein, cable head earth connection plug includes:
the head part is a conical shell with a hollow interior and comprises a first opening and a second opening, the outer diameter of the first opening is smaller than that of the second opening, and the first opening is connected with the body; the inner circumferential surface of the head is provided with threads, and the insulating body is arranged in the head in a penetrating mode and is in threaded connection with the threads;
the arc extinguishing device is fixedly arranged in the body and can be abutted against the conducting rod, and the arc extinguishing device is used for eliminating electric arcs;
the grounding wire penetrates through the body, one end of the grounding wire is connected with the arc extinguishing device, and the other end of the grounding wire is connected with the ground.
Optionally, the body is elbow-shaped.
Optionally, the arc extinguishing device includes the connecting rod and is fixed in the arc extinguishing rod of connecting rod, the arc extinguishing rod can with the conducting rod butt just is used for eliminating electric arc, the connecting rod is fixed in body (1) and with the earth connection is connected.
Optionally, the arc extinguishing device further includes a detection element, the detection element is disposed on the connection rod, and the detection element is configured to detect whether the conductive rod abuts against the arc extinguishing rod.
Optionally, cable head earth connection plug still includes voltage detection device, voltage detection device set up in the lateral surface of body, and be used for detecting whether cable head earth connection plug has voltage.
Optionally, the voltage detection device comprises an indicator light, and the indicator light can change colors according to whether the cable head grounding wire plug is provided with a voltage.
Optionally, the cable head ground wire plug further comprises a cap, and the cap is arranged on the outer side of the body and can seal the voltage detection device.
Optionally, the cap is threadedly connected to the body.
Optionally, the cable head ground wire plug further comprises an operating member, and the operating member is fixed to the outer side of the body.
Optionally, the cable head ground wire plug further comprises a fixing ring, the fixing ring is sleeved on the outer side of the head, and the inner diameter of the fixing ring is larger than the outer diameter of the first opening and smaller than the outer diameter of the second opening.
The invention has the beneficial effects that: according to the cable head grounding wire plug, the threads are arranged on the inner side of the head part, and after the plug is in plug fit with a cable head and is connected through the threads, the connection reliability can be guaranteed, and the plug is not easy to loosen; meanwhile, the head part is arranged in a conical shape and tends to be enlarged from inside to outside, so that the plug can be matched with cable heads of different types, and the application range is wide; in addition, can eliminate electric arc through arc control device, can avoid producing electric arc and cause the damage to the plug body, and then can improve the life of this cable head earth connection plug.
Drawings
Fig. 1 is a schematic structural diagram of a ground wire plug of a cable head according to an embodiment of the present invention.
In the figure:
1-body; 2-a head;
3-an arc extinguishing device; 31-a connecting rod; 32-arc extinguishing rod; 33-an indicator status light;
4-a ground line; 5-capping; 6-fixing the ring.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
As shown in fig. 1, the cable head ground wire plug can be in plug fit with a cable head, the cable head includes an insulating body and a conductive rod penetrating through the insulating body and extending to the outside of the insulating body, the cable head ground wire plug includes a body 1, a head 2, an arc extinguishing device 3 and a ground wire 4, wherein the head 2 is a conical shell with a hollow interior and includes a first opening and a second opening, the outer diameter of the first opening is smaller than that of the second opening, and the first opening is connected with the body 1; the inner circumferential surface of the head part 2 is provided with threads, and the insulating body is arranged in the head part 2 in a penetrating way and is in threaded connection with the threads; the arc extinguishing device 3 is fixedly arranged in the body 1 and can be abutted against the conducting rod, and the arc extinguishing device 3 is used for eliminating electric arcs; the grounding wire 4 penetrates through the body 1, one end of the grounding wire 4 is connected with the arc extinguishing device 3, and the other end of the grounding wire 4 is connected with the ground. It can be understood that the inner side of the head part 2 of the cable head grounding wire plug is provided with threads, and after the cable head grounding wire plug is in splicing fit with a cable head, the cable head grounding wire plug can ensure reliable connection and is not easy to loosen; meanwhile, the head part 2 is arranged in a conical shape and has an enlarged trend from inside to outside, so that the plug can be matched with cable heads of different types, and the application range is wide; in addition, can eliminate electric arc through arc control device 3, can avoid producing electric arc and cause the damage to plug body 1, and then can improve the life of this cable head earth connection plug.
Optionally, the cable head ground wire plug further comprises a fixing ring 6, the fixing ring 6 is sleeved outside the head 2, and the inner diameter of the fixing ring 6 is larger than the outer diameter of the first opening and smaller than the outer diameter of the second opening. It can be understood that, after the cable head and this cable head earth connection plug cooperation of pegging graft, will gu fixed ring 6 promotes from first open-ended direction to second open-ended direction, can tighten up head 2, further guarantee the reliability of connecting, when needs pull down the cable head, only need with gu fixed ring 6 promote to first open-ended direction from second open-ended direction can, easy operation is convenient. The length of the fixing ring 6 in the axial direction is not limited herein.
Optionally, the body 1 is elbow-shaped. In this embodiment, the cable head ground connection plug is adapted to mate with an elbow-type cable head. In other embodiments, the body 1 may have other shapes, and the cable head grounding wire plug may be used with other types of cable heads.
Optionally, the arc extinguishing device 3 comprises a connecting rod 31 and an arc extinguishing rod 32 fixed to the connecting rod 31, the arc extinguishing rod 32 being capable of abutting against the conducting rod and being used for extinguishing the arc, the connecting rod 31 being fixed in the body 1 and being connected to the ground wire 4. It can be understood that when the plug is used in cooperation with a cable head, the insulating body of the cable head can be inserted into the head 2, and the conductive rod of the cable head can be abutted against the arc extinguishing rod 32, so that the arc of the conductive rod can be eliminated through the arc extinguishing rod 32; while the arc-extinguishing lever 32 is fixedly supported in the body 1 by means of the connecting rod 31.
Optionally, the arc extinguishing device 3 further includes a detection element, the detection element is disposed on the connecting rod 31, and the detection element is used for detecting whether the conductive rod abuts against the arc extinguishing rod 32. It can be understood that whether the conductive rod abuts against the arc extinguishing rod 32 or not can be determined through the detection element, so that poor contact between the conductive rod and the arc extinguishing rod 32 can be avoided, and the grounding effect is not influenced. In this embodiment, the arc extinguishing device 3 further includes an indicating status light 33, the indicating status light 33 is disposed on the connecting rod 31 and connected to the detecting element, and the indicating status light 33 can extend out of the body 1. When the detecting element detects that the conducting rod is abutted against the arc extinguishing rod 32, an electric signal can be sent to the indicating state lamp 33, and the indicating state lamp is green at the moment; otherwise, the status indicator light 33 is red. Whether the conducting rod abuts against the arc extinguishing rod 32 or not can be judged by observing the color condition of the indicating state lamp 33, so that whether the cable head grounding wire plug is reliably inserted into the cable head or not can be judged. The specific structural relationship and operation principle between the detecting element and the status indicator light 33 are the prior art, and are not described herein again.
Optionally, the cable head ground wire plug further includes a voltage detection device, and the voltage detection device is disposed on the outer side surface of the body 1 and is used for detecting whether the cable head ground wire plug has voltage. It can be understood that whether the plug is electrified or not can be detected through the voltage detection device, and then the safety of an operator can be ensured.
Specifically, the voltage detection device comprises an indicator light, and the indicator light can change colors according to whether the plug of the grounding wire of the cable head has voltage. In this embodiment, when this cable head earth connection plug is uncharged, the pilot lamp is green, and when electrified, the pilot lamp is red to can directly perceivedly reflect this cable head earth connection plug's electrified condition, so that operating personnel can the quick response. Other structures and operation principles of the voltage detection device are already known in the prior art, and are not described herein again.
Optionally, the cable head ground wire plug further comprises a cap 5, and the cap 5 is arranged outside the body 1 and can enclose the voltage detection device. Specifically, the cap 5 is screwed with the body 1. It can be understood that the voltage detection device can be protected by the cap 5 to prevent the voltage detection device from being damaged, and at the same time, the cap 5 does not shield the indicator light. In addition, cap 5 and body 1 threaded connection can guarantee easy dismounting and connect reliably. In other embodiments, the cap 5 may be connected to the body 1 in other ways.
Optionally, the cable head ground wire plug further comprises an operating member, and the operating member is fixed on the outer side of the body 1. In this embodiment, the operating parts is the action bars, this cable head earth connection plug of operating personnel accessible action bars direct operation, and the action bars adopts insulating material to make, can further guarantee operating personnel's safety, avoids the risk of accidental electric shock. In other embodiments, the operating member may have other configurations.
Example two
Compared with the first embodiment, the difference of the first embodiment is that the cable head grounding wire plug does not comprise an operating part, but the outer side surface of the body 1 is provided with the insulating waterproof layer, so that the insulating waterproof layer can play a role in isolating voltage, an operator can be ensured to be in direct contact with the body 1 to operate, and the risk of electric shock by mistake can be avoided; meanwhile, the waterproof effect can be achieved through the insulating waterproof layer, the waterproof performance of the cable head grounding wire plug is further guaranteed, and the service life is prolonged.
In this embodiment, the insulating waterproof layer is made of insulating rubber. In other embodiments, an insulating waterproof tape may be used to wrap the outer side of the body 1 to form an insulating waterproof layer, or other insulating waterproof materials may be used for spraying.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a cable head earth connection plug, can with the cooperation of pegging graft of cable head, the cable head includes insulator and wears to locate insulator just extends to the outside conducting rod of insulator, its characterized in that, cable head earth connection plug includes:
the head part (2) is a conical shell with a hollow interior and comprises a first opening and a second opening, the outer diameter of the first opening is smaller than that of the second opening, and the first opening is connected with the body (1); the inner circumferential surface of the head (2) is provided with threads, and the insulating body is arranged in the head (2) in a penetrating way and is in threaded connection with the threads;
the arc extinguishing device (3) is fixedly arranged in the body (1) and can be abutted against the conducting rod, and the arc extinguishing device (3) is used for eliminating electric arcs;
the grounding wire (4) penetrates through the body (1), one end of the grounding wire (4) is connected with the arc extinguishing device (3), and the other end of the grounding wire (4) is connected with the ground;
the arc extinguishing device (3) comprises a connecting rod (31) and an arc extinguishing rod (32) fixed on the connecting rod (31), the arc extinguishing rod (32) can be abutted to the conducting rod and used for eliminating electric arcs, and the connecting rod (31) is fixed in the body (1) and connected with the grounding wire (4);
arc control device (3) still include detecting element, detecting element set up in connecting rod (31), detecting element is used for detecting whether the conducting rod with arc extinguishing rod (32) butt.
2. A cable head ground connection plug according to claim 1, characterised in that the body (1) is elbow-shaped.
3. The cable head ground wire plug according to claim 1, further comprising a voltage detection device disposed on an outer side surface of the body (1) and configured to detect whether the cable head ground wire plug has a voltage.
4. A cable head ground plug according to claim 3, wherein said voltage detection means comprises an indicator light that is color changeable according to whether said cable head ground plug is colored with a voltage.
5. A cable head ground plug according to claim 3, further comprising a cap (5), said cap (5) being arranged outside said body (1) and being able to enclose said voltage detection means.
6. A cable head ground wire plug according to claim 5, wherein the cap (5) is screwed to the body (1).
7. A cable head ground connection plug as claimed in any one of claims 1 to 6, further comprising an operating member fixed to the outside of the body (1).
8. A cable head ground wire plug according to any one of claims 1 to 6, further comprising a fixing ring (6), wherein the fixing ring (6) is sleeved outside the head portion (2), and an inner diameter of the fixing ring (6) is larger than an outer diameter of the first opening and smaller than an outer diameter of the second opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134316.1A CN112290290B (en) | 2020-10-21 | 2020-10-21 | Cable head earth connection plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134316.1A CN112290290B (en) | 2020-10-21 | 2020-10-21 | Cable head earth connection plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112290290A CN112290290A (en) | 2021-01-29 |
| CN112290290B true CN112290290B (en) | 2022-05-27 |
Family
ID=74424643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011134316.1A Active CN112290290B (en) | 2020-10-21 | 2020-10-21 | Cable head earth connection plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112290290B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071096A (en) * | 2015-08-19 | 2015-11-18 | 江苏省电力公司扬州供电公司 | U-shaped connector |
| EP3703194A1 (en) * | 2019-02-26 | 2020-09-02 | Pilz GmbH & Co. KG | Storage device for mobile provisioning of data on a technical facility |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352476Y (en) * | 2008-12-28 | 2009-11-25 | 温州天诚电力设备有限公司 | Elbow-shaped lightning arrester |
| AU2015252103B2 (en) * | 2014-11-17 | 2017-05-25 | Thomas & Betts International, Llc | Grounding link for electrical connector mechanism |
| CN105680206A (en) * | 2015-12-31 | 2016-06-15 | 国网浙江奉化市供电公司 | Grounding elbow connector |
| CN208335900U (en) * | 2018-04-03 | 2019-01-04 | 李政 | A kind of novel elbow-type arrester |
| CN209313085U (en) * | 2018-11-29 | 2019-08-27 | 河北安亚达电力器具有限公司 | A kind of dedicated elbow-type ground line of net cabinet |
| CN209401870U (en) * | 2019-04-04 | 2019-09-17 | 深圳供电局有限公司 | Cable electricity testing and grounding integrated device |
| CN209642017U (en) * | 2019-04-22 | 2019-11-15 | 邱梁华 | A kind of fixed built-in type lamps and lanterns plug assembly |
| CN210926503U (en) * | 2019-12-31 | 2020-07-03 | 浙江明都创芯电器有限公司 | Waterproof joint |
-
2020
- 2020-10-21 CN CN202011134316.1A patent/CN112290290B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071096A (en) * | 2015-08-19 | 2015-11-18 | 江苏省电力公司扬州供电公司 | U-shaped connector |
| EP3703194A1 (en) * | 2019-02-26 | 2020-09-02 | Pilz GmbH & Co. KG | Storage device for mobile provisioning of data on a technical facility |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112290290A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2004134368A (en) | Separable electric connector assembly | |
| EP2819141B1 (en) | Automated grounding device with visual indication | |
| CN210575709U (en) | 38kV outdoor solid-sealed polar pole | |
| CN112290290B (en) | Cable head earth connection plug | |
| CN109687180B (en) | Anti-mis-disassembly high-voltage grounding device | |
| CN212113613U (en) | High-voltage fuse base structure with live indication | |
| CN205609435U (en) | Insulating pull rod of vacuum circuit breaker of convenient debugging | |
| CN209472124U (en) | A kind of lock pin, the connector for using the lock pin and the component using the connector | |
| CN219979971U (en) | Instrument and equipment shell grounding anti-static automatic monitoring device | |
| CN208723234U (en) | A kind of connector | |
| CN207114687U (en) | Power equipment smart grounding line | |
| KR100459477B1 (en) | Loadbreak connector | |
| US2813952A (en) | Bayonet type circuit interrupter | |
| CN218099482U (en) | Bulb current-limiting protection system and device | |
| CN217468887U (en) | Airport power plug | |
| CN215732526U (en) | Separable connector based on arc extinguishing conducting rod | |
| KR200204076Y1 (en) | Cut out switch | |
| CN110829394A (en) | Distribution line fault detection equipment and operation method | |
| CN216771874U (en) | Core pulling machine electrical fault prompting circuit applied to petrochemical overhaul | |
| CN117012570B (en) | Power taking device of power distribution switch monitoring terminal and solid-sealed pole of power taking device | |
| CN210897764U (en) | Electromechanical integrated quick electric connection structure | |
| CN218215891U (en) | Unmanned aerial vehicle circular telegram structure of preventing striking sparks | |
| CN211720242U (en) | High-voltage cable insulation joint with built-in capacitive electrode | |
| CN210123878U (en) | Intermediate joint device of high-voltage tubular bus | |
| CN115051191B (en) | Unmanned aerial vehicle power interface safety protection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |