CN113972510A - Multifunctional joint for temporary grounding wire for overhaul test work of transformer substation - Google Patents
Multifunctional joint for temporary grounding wire for overhaul test work of transformer substation Download PDFInfo
- Publication number
- CN113972510A CN113972510A CN202111246917.6A CN202111246917A CN113972510A CN 113972510 A CN113972510 A CN 113972510A CN 202111246917 A CN202111246917 A CN 202111246917A CN 113972510 A CN113972510 A CN 113972510A
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- rod
- groove
- sliding
- transformer substation
- multifunctional joint
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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
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
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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
- H01R4/58—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 characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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Abstract
The invention provides a multifunctional joint of a temporary grounding wire for overhaul test work of a transformer substation, which comprises a joint body, wherein the body is fixedly connected with an insulating rod, a wiring mechanism is arranged on the body, the body comprises a supporting rod, and a cross rod is arranged at the upper end of the supporting rod; the supporting rod is provided with a sliding chute communicated with the two sides, and a sliding rod is connected in the sliding chute in a sliding manner; a screw rod is arranged in the insulating rod; the bottom of the sliding rod is provided with a first connecting hole, a bearing is fixedly arranged in the first connecting hole, and the side wall of the top of the screw rod is fixedly connected with the bearing; one side of the supporting rod is provided with a U-shaped part, the top end of the U-shaped part is fixedly connected with the cross rod, and an elastic clamping piece is arranged in the U-shaped part. The screw rod drives the sliding rod to move up and down so that the connection point can be stably clamped or locked in the connector body, the connector body and the connection point can complete a firm and stable connection relation, only a temporary grounding device needs to be carried during detection, the connection relation is strengthened, the connection point can be grounded, and the safety of a user is further guaranteed.
Description
Technical Field
The invention relates to the technical field of safety, in particular to a multifunctional joint of a temporary grounding wire for overhaul test work of a transformer substation.
Background
A safety short-circuit device is hung in a transformer substation before equipment or a line is overhauled after power failure, and is a safety protection tool for preventing absolute operators or equipment from being injured due to sudden incoming calls, wherein the safety protection tool is a safety tool strictly in accordance with the technical regulation of portable short-circuit grounding wires in the national electric power industry DL/T879-2004.
The temporary grounding wire is also called a safety return line and mainly comprises a grounding end, a soft copper wire, an operating rod and a connector, wherein the connector can be divided into a U-shaped hook and a fixing clamp.The temporary grounding wire is installed in the sequence that the grounding end is installed firstly and then the connector is installed, and the temporary grounding wire is dismantled according to the reverse sequence. When an electrical overhaul worker overhauls equipment, one end of the temporary grounding wire is connected with the ground, and the other end of the temporary grounding wire is connected with a power-cut conductor. In the power system, a temporary grounding wire is 25mm2The annealed copper wire is made of the above annealed copper wire. Wherein, it is very inconvenient to need to bring one type of connector of a U-shaped hook or a fixing clip according to the type of detection during detection.
Disclosure of Invention
In view of the above problems, the present invention is directed to solving the above-described problems. An object of the present invention is to provide a multifunctional joint for a temporary grounding wire for substation overhaul test work that solves the above problems, and that can be applied to various types of detection contacts.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional joint of a temporary grounding wire for overhaul test work of a transformer substation comprises a joint body, wherein the body is fixedly connected with an insulating rod, a wiring mechanism is arranged on the body, the body comprises a supporting rod, and a cross rod is arranged at the upper end of the supporting rod; the supporting rod is provided with a sliding chute communicated with the two sides, a sliding rod is connected in the sliding chute in a sliding mode, and the two ends of the sliding rod extend out of the sliding chute; a screw rod is arranged in the insulating rod and penetrates through the bottom wall of the sliding groove to be abutted against the sliding rod; the bottom of the sliding rod is provided with a first connecting hole, a bearing is fixedly arranged in the first connecting hole, and the side wall of the top of the screw rod is fixedly connected with the inner ring of the bearing; one side of the supporting rod is provided with a U-shaped part, the top end of the U-shaped part is fixedly connected with the cross rod, and an elastic clamping piece is arranged in the U-shaped part.
The preferable technical scheme of the invention is that a clamping piece groove is arranged on the inner wall of one side of the U-shaped part far away from the supporting rod; the elastic clamping piece comprises a butting hook and a first spring, one end of the butting hook is hinged with one end of the U-shaped part far away from the cross rod, one end of the first spring is fixedly connected with the butting hook, and the other end of the first spring is fixedly connected with the inner wall of the clamping piece groove; the abutment hook can be fully inserted into the clip groove.
The invention preferably adopts the technical scheme that the length of the part of the sliding rod, which is close to the U-shaped part and extends out of the sliding chute, is smaller than the width of the opening of the U-shaped part.
The invention has the preferable technical scheme that one side of the sliding rod, which is close to the U-shaped part, is provided with a concave part.
The invention has the preferable technical scheme that the other side of the supporting rod is a C-shaped part, the C-shaped part is provided with a first groove, and the first groove is positioned at the lower end of the cross rod; the first groove is internally and slidably connected with a butting block; a plurality of second springs are arranged in the first groove, one end of each second spring is fixedly connected with the bottom of the first groove, and the other end of each second spring is fixedly connected with the upper end of the corresponding abutting block.
The invention has the preferable technical scheme that a limiting part is arranged in the first groove; the outer side wall of the upper part of the abutting block radially extends out of the clamping part.
The invention has the preferable technical scheme that the bottom end of the abutting block is provided with anti-skid grains, the cross sections of the anti-skid grains are arranged in a plurality of triangles, and the triangles in the anti-skid grains incline towards the direction of the supporting rod.
The invention has the preferable technical scheme that the wiring mechanism comprises a wiring part, and the wiring part is fixedly connected with the supporting rod; the wiring part is provided with wiring holes for communicating the upper side and the lower side; a second groove is formed in the inner side wall of the wiring hole, and an extrusion block is connected in the second groove in a sliding mode; the cross section of the extrusion block is trapezoidal, and the direction of the inclined plane of the extrusion block faces to the lower side of the wiring hole; a third spring is arranged between the extrusion block and the second groove.
The invention has the preferable technical scheme that the wiring part is provided with a second connecting hole at the bottom side of the wiring hole; one end of the annealed copper wire close to the body is fixedly provided with a connecting cylinder; the outer side wall of the end part of the connecting cylinder is in threaded connection with the inner side wall of the second connecting hole.
The invention has the beneficial effects that:
the invention provides a multifunctional joint of a temporary grounding wire for overhaul test work of a transformer substation, which comprises a joint body, wherein the body is fixedly connected with an insulating rod, a wiring mechanism is arranged on the body, the body comprises a supporting rod, and a cross rod is arranged at the upper end of the supporting rod; the supporting rod is provided with a sliding chute communicated with the two sides, a sliding rod is connected in the sliding chute in a sliding mode, and the two ends of the sliding rod extend out of the sliding chute; a screw rod is arranged in the insulating rod and penetrates through the bottom wall of the sliding groove to be abutted against the sliding rod; the bottom of the sliding rod is provided with a first connecting hole, a bearing is fixedly arranged in the first connecting hole, and the side wall of the top of the screw rod is fixedly connected with the inner ring of the bearing; one side of the supporting rod is provided with a U-shaped part, the top end of the U-shaped part is fixedly connected with the cross rod, and an elastic clamping piece is arranged in the U-shaped part. The screw rod drives the sliding rod to move up and down so that the connection point can be stably clamped or locked in the connector body, the connector body and the connection point can complete a firm and stable connection relation, only a temporary grounding device needs to be carried during detection, the connection relation is strengthened, the connection point can be grounded, and the safety of a user is further guaranteed.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
FIG. 1 is a schematic structural diagram of a multifunctional joint of a temporary grounding wire for overhaul test work of a transformer substation, provided by the invention;
FIG. 2 is a schematic cross-sectional view of the chute of the present invention;
FIG. 3 is a schematic cross-sectional view of the U-shaped portion of the present invention;
FIG. 4 is a schematic cross-sectional view of the extrusion die of the present invention;
FIG. 5 is a cross-sectional schematic view of the wiring mechanism of the present invention.
In the figure: 1. a body; 2. an insulating rod; 3. a support bar; 4. a cross bar; 5. a chute; 6. a slide bar; 7. a screw; 8. a first connection hole; 9. a bearing; 10. a U-shaped portion; 11. an elastic clamp; 12. a clamp groove; 13. an abutting hook; 14. a first spring; 15. a C-shaped part; 16. a first groove; 17. a butting block; 18. a second spring; 19. a limiting part; 20. a clamping part; 21. anti-skid lines; 22. a wiring portion; 23. a wiring hole; 24. a second groove; 25. extruding the block; 26. a third spring; 27. a second connection hole; 28. a connecting cylinder; 29. a recessed portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The technical solution of the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 5, the embodiment provides a multifunctional joint for a temporary grounding wire for overhaul test work of a transformer substation, which comprises a joint body 1, wherein the body 1 is fixedly connected with an insulating rod 2, a wiring mechanism is arranged on the body 1, the body 1 comprises a supporting rod 3, and a cross rod 4 is arranged at the upper end of the supporting rod 3; the supporting rod 3 is provided with a sliding chute 5 communicated with the two sides, a sliding rod 6 is connected in the sliding chute 5 in a sliding way, and the two ends of the sliding rod 6 extend out of the sliding chute 5; a screw 7 is arranged in the insulating rod 2, and the screw 7 penetrates through the bottom wall of the sliding groove 5 and is abutted against the sliding rod 6; the bottom of the sliding rod 6 is provided with a first connecting hole 8, a bearing 9 is fixedly arranged in the first connecting hole 8, and the side wall of the top of the screw 7 is fixedly connected with the inner ring of the bearing 9; one side of the support rod 3 is provided with a U-shaped part 10, the top end of the U-shaped part 10 is fixedly connected with the cross rod 4, and an elastic clamping piece 11 is arranged in the U-shaped part 10. The sliding rod 6 is controlled to move up and down by rotating the screw rod 7, wherein an opening of the U-shaped part 10 faces downwards, when the connector is in a round shape like an electric wire, the U-shaped part 10 hooks the connector, the screw rod 7 is rotated, the screw rod 7 drives the sliding rod 6 to move upwards and locks the connector in the U-shaped part 10, when the connector is in a flat type like a bus bar, the lower side wall of the transverse rod 4 on the other side of the U-shaped part 10 is abutted against the upper end of the connector, then the screw rod 7 is rotated, and the sliding rod 6 and the screw rod 7 clamp the connector to realize the connection relation, so that even if the connectors needing grounding at different detection points are different, only a grounding device practical for the connector body 1 needs to be carried, and the connector is more convenient.
Preferably, a clamping piece groove 12 is arranged on the inner wall of one side of the U-shaped part 10 away from the supporting rod 3; the elastic clamp 11 comprises an abutting hook 13 and a first spring 14, one end of the abutting hook 13 is hinged with one end of the U-shaped part 10 far away from the cross rod 4, one end of the first spring 14 is fixedly connected with the abutting hook 13, and the other end of the first spring is fixedly connected with the inner wall of the clamp groove 12; the abutment hook 13 can be completely inserted into the clip groove 12. Strengthen the contact relation between connector and the body 1 through setting up elastic clamping piece 11, wherein the radian of butt hook 13 hook portion is the same with the radian of connector, and during the connection, the connector supports butt hook 13 in the clamp groove 12, and butt hook 13 can be tight through first spring 14 on the contrary supports the connector, has strengthened the contact relation of body 1 with the connector, makes it connect more stably, guarantees that the electric current can stabilize ground connection.
In order to allow the slide 6 to better lock and clamp the link within the U-shaped portion 10, the length of the portion of the slide 6 adjacent to the U-shaped portion 10 and extending out of the chute 5 is smaller than the width of the opening of the U-shaped portion 10.
Further, in order to adapt to the shape of the link when the slide bar 6 is disabled, a recess 29 is formed on the side of the slide bar 6 near the U-shaped portion 10.
Preferably, the other side of the support rod 3 is a C-shaped part 15, the C-shaped part 15 is provided with a first groove 16, and the first groove 16 is positioned at the lower end of the cross rod 4; the first groove 16 is internally and slidably connected with an abutting block 17; a plurality of second springs 18 are arranged in the first groove 16, one ends of the second springs 18 are fixedly connected with the bottom of the first groove 16, and the other ends of the second springs 18 are fixedly connected with the upper end of the abutting block 17. The butt joint block 17 can further ensure that the connecting object is clamped when the connecting object is clamped, and the connection relation between the body 1 and the connecting object can ensure that the current can be conducted.
Preferably, a limiting part 19 is arranged in the first groove 16; the outer side wall of the upper part of the abutting block 17 extends radially to form a clamping part 20. The clamping part 20 is limited by the limiting part 19 to prevent falling out of the body 1.
Furthermore, the bottom end of the abutting block 17 is provided with an anti-slip pattern 21, the cross section of the anti-slip pattern 21 is arranged in a plurality of triangles, and the triangles in the anti-slip pattern are inclined towards the direction of the support rod 3. The anti-slip lines 21 are arranged to prevent the connecting object from moving outwards and sliding out of the body 1 to cause the connection relation to disappear, and the safety of a user is affected due to the failure of grounding.
Preferably, the wiring mechanism comprises a wiring part 22, and the wiring part 22 is fixedly connected with the support rod 3; the wiring part 22 is provided with wiring holes 23 communicating the upper side and the lower side; a second groove 24 is formed in the inner side wall of the wiring hole 23, and an extrusion block 25 is connected in the second groove 24 in a sliding mode; the cross section of the extrusion block 25 is trapezoidal, and the direction of the inclined plane thereof is opened towards the lower side of the wiring hole 23; a third spring 26 is disposed between the pressing block 25 and the second groove 24. In order to strengthen the connection relation between the body 1 and the annealed copper wire, the annealed copper wire is more firm, when the annealed copper wire is installed, the annealed copper wire can pass through the wiring hole 23 from the lower part of the wiring hole 23 and stretch out from the upper part of the wiring hole, when the annealed copper wire passes through the wiring hole 23, the annealed copper wire supports against the inclined plane of the extrusion block 25 to move the extrusion block towards the second groove 24, and after the annealed copper wire passes through the wiring hole 23, the extrusion block 25 supports against the annealed copper wire tightly through the third spring 26 to enable the connection relation to be more stable.
Further, the wire connection portion 22 is provided with a second connection hole 27 at the bottom side of the wire connection hole 23; one end of the annealed copper wire close to the body 1 is fixedly provided with a connecting cylinder 28; the outer side wall of the end of the connecting cylinder 28 is screwed with the inner side wall of the second connecting hole 27. Through connecting cylinder 28 can be further with annealed copper line and body 1 fixed connection guarantee its relation of connection, guarantee finally that the thing of connecting can be stable ground connection with this assurance user's safety.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (9)
1. The utility model provides a transformer substation overhauls experimental work earthing for work line multifunctional joint, includes and connects body (1), body (1) and insulator spindle (2) fixed connection, be provided with wiring mechanism on body (1), its characterized in that:
the body (1) comprises a support rod (3), and a cross rod (4) is arranged at the upper end of the support rod (3); the supporting rod (3) is provided with a sliding chute (5) communicated with the two sides, a sliding rod (6) is connected in the sliding chute (5) in a sliding mode, and the two ends of the sliding rod (6) extend out of the sliding chute (5); a screw rod (7) is arranged in the insulating rod (2), and the screw rod (7) penetrates through the bottom wall of the sliding groove (5) and is abutted against the sliding rod (6); the bottom of the sliding rod (6) is provided with a first connecting hole (8), a bearing (9) is fixedly arranged in the first connecting hole (8), and the side wall of the top of the screw rod (7) is fixedly connected with the inner ring of the bearing (9);
the supporting rod (3) is provided with a U-shaped portion (10) on one side, the top end of the U-shaped portion (10) is fixedly connected with the cross rod (4), and an elastic clamping piece (11) is arranged in the U-shaped portion (10).
2. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 1, which is characterized in that:
a clamping piece groove (12) is formed in the inner wall of one side, away from the supporting rod (3), of the U-shaped part (10);
the elastic clamping piece (11) comprises an abutting hook (13) and a first spring (14), one end of the abutting hook (13) is hinged with one end, far away from the cross rod (4), of the U-shaped portion (10), one end of the first spring (14) is fixedly connected with the abutting hook (13), and the other end of the first spring is fixedly connected with the inner wall of the clamping piece groove (12); the abutment hook (13) can be completely inserted into the clip groove (12).
3. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 1, which is characterized in that:
the length of the part, which is close to the U-shaped part (10) and extends out of the sliding chute (5), of the sliding rod (6) is smaller than the opening width of the U-shaped part (10).
4. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 3, wherein the multifunctional joint comprises:
and a concave part (29) is arranged on one side of the sliding rod (6) close to the U-shaped part (10).
5. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 1, which is characterized in that:
the other side of the supporting rod (3) is provided with a C-shaped part (15), the C-shaped part (15) is provided with a first groove (16), and the first groove (16) is positioned at the lower end of the cross rod (4); a butting block (17) is connected in the first groove (16) in a sliding manner; a plurality of second springs (18) are arranged in the first groove (16), one end of each second spring (18) is fixedly connected with the bottom of the corresponding first groove (16), and the other end of each second spring is fixedly connected with the upper end of the corresponding abutting block (17).
6. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 5, wherein the multifunctional joint comprises:
a limiting part (19) is arranged in the first groove (16); the outer side wall of the upper part of the abutting block (17) radially extends out of a clamping part (20).
7. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 5, wherein the multifunctional joint comprises:
the bottom end of the abutting block (17) is provided with anti-skidding lines (21), the cross sections of the anti-skidding lines (21) are arranged in a plurality of triangles, and the triangles in the anti-skidding lines are inclined towards the supporting rod (3).
8. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 1, which is characterized in that:
the wiring mechanism comprises a wiring part (22), and the wiring part (22) is fixedly connected with the supporting rod (3); the wiring part (22) is provided with wiring holes (23) which are communicated with the upper side and the lower side; a second groove (24) is formed in the inner side wall of the wiring hole (23), and an extrusion block (25) is connected in the second groove (24) in a sliding mode; the cross section of the extrusion block (25) is trapezoidal, and the direction of the inclined plane of the extrusion block faces to the lower side of the wiring hole (23) and is opened; a third spring (26) is arranged between the extrusion block (25) and the second groove (24).
9. The multifunctional joint for the temporary grounding wire for the overhaul test work of the transformer substation of claim 8, wherein the multifunctional joint comprises:
the wiring part (22) is provided with a second connecting hole (27) at the bottom side of the wiring hole (23);
one end of the annealed copper wire close to the body (1) is fixedly provided with a connecting cylinder (28); the outer side wall of the end part of the connecting cylinder (28) is in threaded connection with the inner side wall of the second connecting hole (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246917.6A CN113972510B (en) | 2021-10-26 | 2021-10-26 | Multifunctional connector for temporary grounding wire of transformer substation overhaul test work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246917.6A CN113972510B (en) | 2021-10-26 | 2021-10-26 | Multifunctional connector for temporary grounding wire of transformer substation overhaul test work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113972510A true CN113972510A (en) | 2022-01-25 |
| CN113972510B CN113972510B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111246917.6A Active CN113972510B (en) | 2021-10-26 | 2021-10-26 | Multifunctional connector for temporary grounding wire of transformer substation overhaul test work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113972510B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441353A (en) * | 2013-09-12 | 2013-12-11 | 国家电网公司 | Universal ground lead for 110 kilovolt overhead line strain tower |
| US20160141801A1 (en) * | 2014-11-17 | 2016-05-19 | Thomas & Betts International, Llc | Grounding link for electrical connector mechanism |
| CN210430156U (en) * | 2019-11-18 | 2020-04-28 | 晋普 | Multifunctional joint for temporary grounding wire for overhaul test work of transformer substation |
| CN111952739A (en) * | 2020-08-11 | 2020-11-17 | 国家电网有限公司 | Multifunctional joint for temporary grounding wire for overhaul test work of transformer substation |
| CN213184650U (en) * | 2020-08-04 | 2021-05-11 | 国家电网有限公司 | Multifunctional grounding wire hook |
-
2021
- 2021-10-26 CN CN202111246917.6A patent/CN113972510B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441353A (en) * | 2013-09-12 | 2013-12-11 | 国家电网公司 | Universal ground lead for 110 kilovolt overhead line strain tower |
| US20160141801A1 (en) * | 2014-11-17 | 2016-05-19 | Thomas & Betts International, Llc | Grounding link for electrical connector mechanism |
| CN210430156U (en) * | 2019-11-18 | 2020-04-28 | 晋普 | Multifunctional joint for temporary grounding wire for overhaul test work of transformer substation |
| CN213184650U (en) * | 2020-08-04 | 2021-05-11 | 国家电网有限公司 | Multifunctional grounding wire hook |
| CN111952739A (en) * | 2020-08-11 | 2020-11-17 | 国家电网有限公司 | Multifunctional joint for temporary grounding wire for overhaul test work of transformer substation |
Non-Patent Citations (1)
| Title |
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| 陈仪;: "一款新型临时接地线的研制", 通讯世界, no. 24, pages 129 - 130 * |
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| CN113972510B (en) | 2023-10-13 |
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