CN114759369A - High-voltage line butting device for electric power engineering construction and using method - Google Patents
High-voltage line butting device for electric power engineering construction and using method Download PDFInfo
- Publication number
- CN114759369A CN114759369A CN202210390562.6A CN202210390562A CN114759369A CN 114759369 A CN114759369 A CN 114759369A CN 202210390562 A CN202210390562 A CN 202210390562A CN 114759369 A CN114759369 A CN 114759369A
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- ring
- fixing
- clamping ring
- fixedly connected
- voltage line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention relates to the technical field of electric power, and discloses a high-voltage line butting device for electric power engineering construction, which comprises a butting device body, a tension detection assembly, a first clamping ring and a second clamping ring, wherein alignment bolts are fixed at two ends of the butting device body in a screwed manner, connecting rods are fixed at the tops of the alignment bolts in a screwed manner, a connecting ring is fixedly connected to a section of each connecting rod, which is far away from the alignment bolts, and four symmetrically distributed supporting rods are fixedly connected to the butting device body; when the external PC end receives that the tension value sent out by the tension sensor is too large, the maintenance can be carried out by power cut, the alignment bolt on the butt connector body is unscrewed, then the locking nut is screwed to drive the second clamping ring to move towards the butt connector body, so that the high-voltage wire can be pulled towards the butt connector body, the wire is put into the butt connector body again, the maintenance can be finished, and people can find the looseness of the high-voltage wire connector in time and then correct the high-voltage wire connector.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a high-voltage line butting device for electric power engineering construction and a using method thereof.
Background
With the scientific and technological development of China, high-voltage wires are visible everywhere, high-voltage wires in cities can be erected in the air, and overhead high-voltage wires in the cities can be provided with insulating layers, but when the high-voltage wires meet the weather of strong wind and heavy rain, the high-voltage wires are at risk of breakage.
When the high-voltage wire is broken, the broken part of the high-voltage wire is usually reconnected by using the joint, because some high-voltage wires are positioned in the air, the high-voltage wire has a tensile force on the wire fixed in the butt joint device under the action of gravity, the connection between the wire at the broken part and the butt joint device can be loosened for a long time, and people cannot timely know and repair the danger of the re-breakage.
Disclosure of Invention
The invention mainly aims to provide a high-voltage line butting connector for power engineering construction and a using method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the high-voltage line butt-joint device for the electric power engineering construction comprises a butt-joint device body, a tension detection assembly, a first clamp ring and a second clamp ring, wherein alignment bolts are fixedly connected to two ends of the butt-joint device body in a screwed mode, connecting rods are fixedly connected to the tops of the alignment bolts in a screwed mode, one sections, far away from the alignment bolts, of the connecting rods are fixedly connected with a connecting ring, four symmetrically distributed supporting rods are fixedly connected to the butt-joint device body, supporting blocks are fixedly connected to one ends, close to the butt-joint device body, of the supporting rods in a screwed mode, the tension detection assembly comprises a tension sensor, a pull rope and a fixing ring, the tension sensor is in signal connection with an external PC end, a fixing rod is fixedly connected to the first clamp ring, a limiting block is fixedly connected to the fixing rod, and the fixing ring, close to the first clamp ring, is in sliding connection with the fixing rod, fixedly connected with second connecting rod on the second snap ring, the second connecting rod is kept away from the one end fixedly connected with second go-between of second snap ring, the inside tensioning screw that is equipped with of second go-between, tensioning screw runs through the second go-between with the go-between, just tensioning screw is close to the one end spiro union of go-between has lock nut.
The invention is further improved in that one end of the supporting block, which is close to the butt-joint device body, is fixedly connected with a rubber block, a fastening nut is screwed on the supporting rod and presses and fixes the fixing ring, which is close to the butt-joint device body, through the fastening nut, a fixing nut is screwed on the fixing rod, and the fixing ring, which is close to the first clamping ring, is pressed and fixed through the fixing nut.
The invention is further improved in that two ends of the tension sensor are fixedly connected with pull ropes, one end of each pull rope, far away from the tension sensor, is fixedly connected with a fixing ring, and the fixing ring, close to the butt-joint device body, is connected to the support rod in a sliding manner.
The invention is further improved in that a protective shell is arranged outside the tension detection assembly, the opening part of the protective shell is in a tooth shape, a fixed clamp for fixing the protective shell is sleeved on the protective shell, and the protective shell is made of rubber.
The improved structure of the invention is characterized in that the inner part of the first snap ring is fixedly connected with fixing teeth, the fixing teeth are uniformly distributed on the inner ring of the first snap ring, the inner part of the second snap ring is fixedly connected with stabilizing teeth, and the stabilizing teeth are uniformly distributed on the inner ring of the second snap ring.
The invention is further improved in that a fixing bolt is screwed on the second clamping ring, and one end of the fixing bolt inserted into the second clamping ring is in a conical shape.
The invention is further improved in that the first clamping ring is positioned between the second clamping ring and the butting connector body, the first clamping ring and the second clamping ring are positioned on the same straight line.
The invention further improves the butt joint device of the high-voltage line for the electric power engineering construction and the using method, and comprises the following steps:
a: when using, at first peel off the inside wire of the high-tension line of disconnection, then insert the both ends of butt joint ware body with the wire, screw into inside the butt joint ware body with the alignment bolt again, compress tightly fixedly through the alignment bolt to the inside wire that gets into the butt joint ware body, then install first snap ring on the high-tension line, install two solid fixed rings on the tension detecting component respectively on the dead lever and on the bracing piece again, then record tension sensor detects the tension data, install the outside at the tension detecting component to the protecting sheathing, fix the protecting sheathing through fixed clamp, play the effect of a protection through the protecting sheathing to the tension detecting component.
B: the second clamping ring is arranged on the high-voltage line, the second connecting ring and the connecting ring are located on the same straight line, firmness between the second clamping ring and the high-voltage line can be improved through the stabilizing teeth and the fixing bolts, then the second connecting ring and the connecting ring are sequentially penetrated through by the tensioning screw rod, and the locking nut is arranged on the tensioning screw rod to complete installation of the locking nut.
C: because some high-voltage wires are positioned in the air, the high-voltage wires can exert a tensile force on the wires fixed in the butt connector body under the action of gravity, the connection between the wires at the fracture part and the butt connector body can be loosened for a long time, the high-voltage wires can be gradually pulled out of the butt connector body towards one side when the loosening occurs, the tensile force borne by the tension sensor can be increased at the moment, when the external PC end receives an overlarge tensile force value sent by the tension sensor, the maintenance can be carried out in a power failure mode, a maintenance worker can screw the fixing bolt into the second clamping ring to enable the conical part at the front end of the fixing bolt to be pricked into the high-voltage wire insulating layer, the fixing bolt does not prick the insulating layer, the fixing bolt is an insulating bolt, the firmness between the second clamping ring and the high-voltage wires is improved, the line-positioning bolt on the butt connector body is unscrewed, then the locking nut is screwed to drive the second clamping ring to move towards the butt connector body, thereby can drag the high-voltage line to the butt joint ware body, put into the butt joint ware body with the wire again inside, just can accomplish the maintenance, people can in time discover that the high-voltage line connects not hard up, then revise it.
Compared with the prior art, the invention has the beneficial effects that:
when the joint is loosened, the high-voltage wire can be gradually pulled out of the butt connector body towards one side, the tension detected by the tension sensor can be increased, when an external PC end receives that the tension value sent by the tension sensor is too large, power can be cut off for maintenance, the alignment bolt on the butt connector body is unscrewed, then the locking nut is screwed to drive the second clamping ring to move towards the butt connector body, so that the high-voltage wire can be pulled towards the butt connector body, the lead is put into the butt connector body again, the maintenance can be completed, and people can find the loosening of the high-voltage wire joint in time and then correct the loosening.
Drawings
FIG. 1 is a schematic structural diagram of a high-voltage line butt-joint device for electric power engineering construction and a using method thereof;
FIG. 2 is another schematic structural diagram of the high-voltage line butt-joint device for electric power engineering construction and the use method thereof according to the present invention;
FIG. 3 is a schematic view of the tension detecting assembly and the protective housing;
FIG. 4 is a schematic view of the tension detecting assembly;
FIG. 5 is a schematic view of a first snap ring;
FIG. 6 is a schematic view of the structure of the protective housing and the first snap ring;
FIG. 7 is a schematic view of a second snap ring;
In the figure: 1. a butt connector body; 11. a line bolt; 111. a connecting rod; 112. a connecting ring; 12. a support bar; 13. a support block; 131. a rubber block; 132. fastening a nut; 2. a tension detection assembly; 21. a tension sensor; 22. pulling a rope; 23. a fixing ring; 3. a protective housing; 31. fixing a clamp; 4. a first snap ring; 41. fixing the rod; 411. a limiting block; 412. fixing a nut; 42. fixing teeth; 5. a second snap ring; 51. a second connecting rod; 511. a second connection ring; 52. a stabilizing tooth; 53. fixing the bolt; 6. tensioning the screw rod; 61. and locking the nut.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the invention.
Example 1
Referring to fig. 1-6, the high-voltage line butt-joint device for electric power engineering construction includes a butt-joint device body 1, a tension detecting assembly 2, a first snap ring 4 and a second snap ring 5, wherein both ends of the butt-joint device body 1 are fixed with a line-defining bolt 11, a top of the line-defining bolt 11 is fixed with a connecting rod 111, a section of the connecting rod 111 far away from the line-defining bolt 11 is fixedly connected with a connecting ring 112, four symmetrically distributed support rods 12 are fixedly connected to the butt-joint device body 1, one end of the support rod 12 close to the butt-joint device body 1 is fixed with a support block 13, one end of the support block 13 close to the butt-joint device body 1 is fixedly connected with a rubber block 131, the tension detecting assembly 2 includes a tension sensor 21, a pull rope 22 and a fixing ring 23, both ends of the tension sensor 21 are fixedly connected with pull ropes 22, one end of the pull rope 22 far away from the tension sensor 21 is fixedly connected with the fixing ring 23, the fixing ring 23 close to the butt-joint device body 1 is connected to the support rod 12 in a sliding manner, a protective shell 3 is arranged outside the tension detection assembly 2, the opening of the protective shell 3 is in a shape of 'teeth', a fixing hoop 31 for fixing the protective shell 3 is sleeved on the protective shell 3, the protective shell 3 is made of rubber, a fastening nut 132 is screwed on the support rod 12 and presses and fixes a fixing ring 23 close to the butt-joint device body 1 through the fastening nut 132, the tension sensor 21 is in signal connection with an external PC end, a fixing rod 41 is fixedly connected on the first snap ring 4, a limiting block 411 is fixedly connected on the fixing rod 41, a fixing nut 412 is screwed on the fixing rod 41 and presses and fixes the fixing ring 23 close to the first snap ring 4 through the fixing nut 412, firstly, a lead in a disconnected high-voltage wire is stripped, then the lead is inserted into two ends of the butt-joint device body 1, then a routing bolt 11 is screwed into the butt-joint device body 1, and the lead in the butt-joint device body 1 is pressed and fixed through the routing bolt 11, then install first snap ring 4 on the high tension line, install two solid fixed rings 23 on the tension detection subassembly 2 on dead lever 41 and bracing piece 12 respectively again, and then fix two solid fixed rings 23 respectively through fastening nut 132 and fixation nut 412, then record the tension data that tension sensor 21 detected as initial data, install protecting sheathing 3 in the outside of tension detection subassembly 2, fix protecting sheathing 3 through fixed clamp 31, play a protective role to the tension detection subassembly 2 through protecting sheathing 3, the solid fixed ring 23 that is close to first snap ring 4 is connected on dead lever 41 in a sliding manner.
Referring to fig. 1 and 7, the fixing teeth 42 are fixedly connected inside the first snap ring 4, the fixing teeth 42 are uniformly distributed on the inner ring of the first snap ring 4, the stabilizing teeth 52 are fixedly connected inside the second snap ring 5, the stabilizing teeth 52 are uniformly distributed on the inner ring of the second snap ring 5, the fixing bolt 53 is screwed on the second snap ring 5, one end of the fixing bolt 53 inserted into the second snap ring 5 is in a cone shape, the first snap ring 4 is located between the second snap ring 5 and the butt connector body 1, the first snap ring 4 and the second snap ring 5 are located on the same straight line, the second snap ring 5 is fixedly connected with the second connecting rod 51, one end of the second connecting rod 51 far away from the second snap ring 5 is fixedly connected with the second connecting ring 511, the tensioning screw 6 is arranged inside the second connecting ring 511, the tensioning screw 6 penetrates through the second connecting ring 511 and the connecting ring 112, and one end of the tensioning screw 6 near the connecting ring 112 is screwed with the locking nut 61, the second snap ring 5 is mounted on the high voltage line, so that the second connection ring 511 and the connection ring 112 are positioned on the same straight line, the firmness between the second snap ring 5 and the high voltage line can be increased by the stabilizing teeth 52 and the fixing bolt 53, then the tightening screw 6 sequentially penetrates through the second connection ring 511 and the connection ring 112, and then the locking nut 61 is mounted on the tightening screw 6, so that the mounting of the locking nut is completed.
The working principle of the invention is as follows: when an external PC end receives a tension value sent by the tension sensor 21, the original tension value is subtracted from the tension value, when the tension sensor 21 is stressed too much, power can be cut off for maintenance, a maintenance worker can screw the fixing bolt 53 into the second clamp ring 5 to enable the conical part at the front end of the fixing bolt to be pricked into the high-voltage wire insulating layer, the fixing bolt 53 does not prick the insulating layer, the fixing bolt 53 is an insulating bolt, firmness between the second clamp ring 5 and the high-voltage wire is improved, the alignment bolt 11 on the butt connector body 1 is unscrewed, then the locking nut 61 is screwed to drive the second clamp ring 5 to move towards the butt connector body 1, so that the high-voltage wire can be pulled towards the butt connector body 1, the conducting wire is put into the butt connector body 1 again, maintenance can be completed, people can find out that the high-voltage wire joint is loosened in time, and then correct the high-voltage wire joint.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. High-voltage line butting ware is used in electric power engineering construction, its characterized in that: the device comprises a butt joint device body (1), a tension detection assembly (2), a first clamping ring (4) and a second clamping ring (5), wherein alignment bolts (11) are fixed to two ends of the butt joint device body (1) in a threaded manner, connecting rods (111) are fixed to the tops of the alignment bolts (11) in a threaded manner, a connecting ring (112) is fixedly connected to one section, far away from the alignment bolts (11), of each connecting rod (111), four symmetrically distributed supporting rods (12) are fixedly connected to the butt joint device body (1), and supporting blocks (13) are fixed to one ends, close to the butt joint device body (1), of the supporting rods (12) in a threaded manner;
the tension detection assembly (2) comprises a tension sensor (21), a pull rope (22) and a fixing ring (23), the tension sensor (21) is in signal connection with an external PC end, a fixing rod (41) is fixedly connected to the first clamping ring (4), a limiting block (411) is fixedly connected to the fixing rod (41), and the fixing ring (23) close to the first clamping ring (4) is connected to the fixing rod (41) in a sliding mode;
fixedly connected with second connecting rod (51) on second snap ring (5), keep away from second connecting rod (51) the one end fixedly connected with second go-between (511) of second snap ring (5), second go-between (511) inside be equipped with lag screw (6), lag screw (6) run through second go-between (511) with go-between (112), just lag screw (6) are close to the one end spiro union of go-between (112) has lock nut (61).
2. The high-voltage line butting device for power engineering construction as recited in claim 1, wherein: supporting shoe (13) are close to one end fixedly connected with block rubber (131) of butt joint ware body (1), the spiro union has fastening nut (132) on bracing piece (12), and passes through fastening nut (132) are to being close to butt joint ware body (1) solid fixed ring (23) compress tightly fixedly, the spiro union has fixation nut (412) on dead lever (41), and passes through fixation nut (412) are to being close to first snap ring (4) gu fixed ring (23) compress tightly fixedly.
3. The high-voltage line butting device for power engineering construction as recited in claim 1, wherein: pulling rope (22) are fixedly connected to the two ends of the tension sensor (21), one end, far away from the tension sensor (21), of the pulling rope (22) is fixedly connected with a fixing ring (23), and the fixing ring (23) close to the butt-joint device body (1) is connected to the supporting rod (12) in a sliding mode.
4. The high-voltage line butting device for power engineering construction as recited in claim 1, wherein: pulling force determine module (2) outside is equipped with protecting sheathing (3), protecting sheathing (3) opening is "tooth" form, just the cover is equipped with fixed clamp (31) of going on fixing it on protecting sheathing (3), the material of protecting sheathing (3) is rubber.
5. The high-voltage line butting device for power engineering construction as recited in claim 1, wherein: fixed teeth (42) are fixedly connected with the inside of the first clamping ring (4), the fixed teeth (42) are uniformly distributed on the inner ring of the first clamping ring (4), stable teeth (52) are fixedly connected with the inside of the second clamping ring (5), and the stable teeth (52) are uniformly distributed on the inner ring of the second clamping ring (5).
6. The high-voltage line butting device for power engineering construction as recited in claim 1, wherein: second snap ring (5) are gone up the spiro union and are had fixing bolt (53), just fixing bolt (53) insert the inside one end of second snap ring (5) is "awl" shape.
7. The high-voltage line butting device for power engineering construction as recited in claim 1, wherein: the first clamping ring (4) is located between the second clamping ring (5) and the butt joint device body (1), the first clamping ring (4) and the second clamping ring (5) are located on the same straight line.
8. The use method of the high-voltage line butting device for the electric power engineering construction is characterized by comprising the following steps of: the use method comprises the following conditions:
a: when the device is used, firstly, a wire in a disconnected high-voltage wire is stripped, then the wire is inserted into two ends of a butt connector body (1), then a routing bolt (11) is screwed into the butt connector body (1), the wire entering the butt connector body (1) is compressed and fixed through the routing bolt (11), then a first clamping ring (4) is installed on the high-voltage wire, then two fixing rings (23) on a tension detection assembly (2) are respectively installed on a fixing rod (41) and a supporting rod (12), then tension data detected by a tension sensor (21) are recorded, a protective shell (3) is installed outside the tension detection assembly (2), the protective shell (3) is fixed through a fixing clamp (31), and the tension detection assembly (2) is protected through the protective shell (3).
B: the second clamping ring (5) is arranged on the high-voltage line, the second connecting ring (511) and the connecting ring (112) are located on the same straight line, firmness between the second clamping ring (5) and the high-voltage line can be improved through the stabilizing teeth (52) and the fixing bolts (53), then the tensioning screw (6) sequentially penetrates through the second connecting ring (511) and the connecting ring (112), and the locking nut (61) is arranged on the tensioning screw (6) to complete the installation of the locking nut.
C: because some high-voltage wires are positioned in the air, the high-voltage wires can have a tensile force on the wires fixed in the butt connector body (1) under the action of gravity, the connection between the wires at the fracture part and the butt connector body (1) can be loosened for a long time, the high-voltage wires can be gradually pulled out of the butt connector body (1) to one side when the high-voltage wires are loosened, the tensile force applied to the tension sensor (21) can be increased at this time, when the external PC end receives the overlarge tensile force value sent by the tension sensor (21), power can be cut off for maintenance, a maintenance worker can screw the fixing bolts (53) into the second clamping ring (5) to ensure that the conical parts at the front end of the fixing bolts are pricked into the high-voltage wire insulating layer, the fixing bolts (53) do not prick the insulating layer, the fixing bolts (53) are insulating bolts, and the firmness between the second clamping ring (5) and the high-voltage wires is improved, with alignment bolt (11) the unscrewing on butt joint ware body (1), then twist and move lock nut (61) and drive second snap ring (5) and remove to butt joint ware body (1) to can drag the high-voltage line to butt joint ware body (1), put into butt joint ware body (1) with the wire again inside, just can accomplish the maintenance, people can in time discover that the high-voltage line connects not hard up, then revise it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390562.6A CN114759369B (en) | 2022-04-14 | 2022-04-14 | High-voltage line butt connector for power engineering construction and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390562.6A CN114759369B (en) | 2022-04-14 | 2022-04-14 | High-voltage line butt connector for power engineering construction and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114759369A true CN114759369A (en) | 2022-07-15 |
| CN114759369B CN114759369B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210390562.6A Active CN114759369B (en) | 2022-04-14 | 2022-04-14 | High-voltage line butt connector for power engineering construction and use method |
Country Status (1)
| Country | Link |
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| CN (1) | CN114759369B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4895028A (en) * | 1989-01-27 | 1990-01-23 | U.S. Philips Corporation | Method of pull-testing wire connectors on an electrical device |
| GB202102554D0 (en) * | 2021-02-23 | 2021-04-07 | Jr Dynamics Ltd | Tension monitoring apparatus |
| CN214378894U (en) * | 2021-04-07 | 2021-10-08 | 国网山西省电力公司检修分公司 | Extra-high voltage substation grounding wire safety control locking device |
| CN114033239A (en) * | 2021-12-03 | 2022-02-11 | 国网新疆电力有限公司塔城供电公司 | Pull wire connector with external force damage prevention function |
-
2022
- 2022-04-14 CN CN202210390562.6A patent/CN114759369B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4895028A (en) * | 1989-01-27 | 1990-01-23 | U.S. Philips Corporation | Method of pull-testing wire connectors on an electrical device |
| GB202102554D0 (en) * | 2021-02-23 | 2021-04-07 | Jr Dynamics Ltd | Tension monitoring apparatus |
| CN214378894U (en) * | 2021-04-07 | 2021-10-08 | 国网山西省电力公司检修分公司 | Extra-high voltage substation grounding wire safety control locking device |
| CN114033239A (en) * | 2021-12-03 | 2022-02-11 | 国网新疆电力有限公司塔城供电公司 | Pull wire connector with external force damage prevention function |
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| CN114759369B (en) | 2023-08-08 |
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