CN111883954B - Error-locking prevention device for grounding wire of power transmission line - Google Patents
Error-locking prevention device for grounding wire of power transmission line Download PDFInfo
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- CN111883954B CN111883954B CN202010752805.7A CN202010752805A CN111883954B CN 111883954 B CN111883954 B CN 111883954B CN 202010752805 A CN202010752805 A CN 202010752805A CN 111883954 B CN111883954 B CN 111883954B
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- clamp
- wire
- grounding
- lifting screw
- mechanical locking
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 title description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 5
- 206010014357 Electric shock Diseases 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000019771 cognition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
- H01R11/14—End pieces terminating in an eye, hook, or fork the hook being adapted for hanging on overhead or other suspended lines, e.g. hot line clamp
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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
- 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
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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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
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/42—Clamping area to one side of screw only
-
- 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
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
-
- 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
Abstract
The invention discloses a misoperation-preventive locking device for a grounding wire of a power transmission line, which comprises: a wire clamp and a ground clamp; the wire clamp comprises a wire clamp main body and a mechanical locking key which is detachably arranged on the wire clamp main body; a hanging ring is fixed at the tail end of the mechanical locking key; the hanging ring is used for hanging the wire clamp; the ground clamp comprises a ground clamp frame and a ground clamp lifting screw, the ground clamp lifting screw is installed on the ground clamp frame in a threaded connection mode, a key hole is formed in the upper end of the ground clamp lifting screw, and the mechanical locking key is matched with the key hole of the ground clamp lifting screw. When the grounding wire is installed, the grounding end is installed firstly, and then the wire end is installed; when the grounding wire is removed, the wire end is taken first, and then the grounding end is taken. The electric shock accident caused by the reversal of the operation flow is avoided.
Description
Technical Field
The invention belongs to the technical field of power equipment, and particularly relates to a misoperation-preventive locking device for a grounding wire of a power transmission line.
Background
The installation of the grounding wire is an important technical measure for the power-off maintenance operation of the power transmission line and is an important guarantee for ensuring the personal safety of operating personnel. Regulations for national grid company electric power safety work regulations (line section): when the grounding wire is installed, the grounding end is installed firstly, and then the wire end is installed; the grounding wires are in good contact and reliable in connection, and the sequence of removing the grounding wires is opposite to that of removing the grounding wires; the conductor section of the grounding wire is assembled and disassembled by using an insulating rod or a special insulating rope, and a human body does not touch the grounding wire; the grounding wire is fixed on the conducting wire by using a special wire clamp, and the winding method is strictly forbidden for grounding or short circuit.
At present, the operation of hanging the ground wire on the power transmission line has a great potential safety hazard, if the ground end and the wire end are not required to be firstly installed according to the regulations of electric power safety work regulations (line part) of national grid companies in the operation process of installing the ground wire, residual electricity and induced electricity on the line can threaten the human body. The existing grounding wire device cannot control the operation sequence, so that the field operator is restricted from hanging the grounding wire according to the safety requirement, and the condition of firstly installing a wire end and then installing a grounding end can be avoided only by the subjective cognition of the operator on the operation specification. This is difficult to handle in practice and is prone to dangerous behaviour where the operator touches the ungrounded power equipment conductors.
Disclosure of Invention
The invention aims to provide a misoperation-preventive locking device for a ground wire of a power transmission line, which aims to solve the problem that in the prior art, the conventional grounding wire device cannot control the operation sequence to restrict the operation that field operators must hook the ground wire according to safety requirements, so that dangerous behaviors of the operators contacting ungrounded conductors of power equipment are easy to occur.
In order to realize the purpose, the following technical scheme is adopted:
a transmission line earth connection anti-misoperation lockout device comprises: a wire clamp and a ground clamp;
the wire clamp comprises a wire clamp main body and a mechanical locking key which is detachably arranged on the wire clamp main body; a hanging ring is fixed at the tail end of the mechanical locking key; the hanging ring is used for hanging the wire clamp;
the ground clamp comprises a ground clamp frame and a ground clamp lifting screw, the ground clamp lifting screw is installed on the ground clamp frame in a threaded connection mode, a key hole is formed in the upper end of the ground clamp lifting screw, and the mechanical locking key is matched with the key hole of the ground clamp lifting screw.
Furthermore, the front end of the mechanical locking key is an unlocking part, the middle part of the mechanical locking key is provided with external threads, the wire clamp body is provided with a threaded hole, and the front end of the mechanical locking key is inserted into the threaded hole of the wire clamp body; and rotating the mechanical locking key, wherein the middle part of the mechanical locking key is matched with a threaded hole of the wire clamp main body, and the mechanical locking key is arranged on the wire clamp main body.
Further, the unlocking piece is in a cuboid shape.
Furthermore, the key hole of the grounding clip lifting screw rod is a rectangular parallelepiped groove.
Furthermore, the upper portion of the lifting screw rod of the grounding clamp is of a smooth round rod structure, the lower portion of the lifting screw rod is provided with external threads, and the bottom end of the lifting screw rod is a pressing portion in a round cake shape.
Furthermore, the grounding clamp frame comprises a groove, a threaded hole is formed in one side wall of the groove, and the grounding clamp lifting screw is in threaded connection with the threaded hole of the groove.
Compared with the prior art, the invention has the following technical effects:
(A) the anti-misoperation locking device for the ground wire of the power transmission line provided by the embodiment of the invention comprises: a wire clamp and a ground clamp; the wire clamp comprises a wire clamp main body and a mechanical locking key which is detachably arranged on the wire clamp main body; a hanging ring is fixed at the tail end of the mechanical locking key; the hanging ring is used for hanging the wire clamp; the ground clamp comprises a ground clamp frame and a ground clamp lifting screw, the ground clamp lifting screw is installed on the ground clamp frame in a threaded connection mode, a key hole is formed in the upper end of the ground clamp lifting screw, and the mechanical locking key is matched with the key hole of the ground clamp lifting screw. When the grounding wire is installed, the grounding end is installed firstly, and then the wire end is installed; when the grounding wire is removed, the wire end is taken first, and then the grounding end is taken. The electric shock accident caused by the reversal of the operation flow is avoided.
(B) The invention has low cost and high production quality.
(C) The invention has reasonable scheme, simple structure and easy realization, and can fully exert the advantages of the novel device.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic front view of a wire clamp according to an embodiment of the present invention;
fig. 2 is a schematic front view of a ground clip according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a mechanical locking key according to an embodiment of the present invention;
FIG. 4 is a schematic left side view of a mechanical locking key according to an embodiment of the present invention;
FIG. 5 is a schematic top view of a mechanical locking key according to an embodiment of the present invention;
wherein: 1, a lead clamp; 2, a grounding clip; 11 a wire clamp body; 12 a mechanical locking key; 13, hanging a ring; 21 a ground clip frame; 22 a ground clip lifting screw; 121 to open the locking piece; 221 a crimping part; 211 grooves.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
As shown in fig. 1 to 5, an embodiment of the present invention provides a device for preventing false locking of a ground wire of a power transmission line, including: a wire clamp 1 and a grounding clamp 2; the wire clamp 1 comprises a wire clamp main body 11 and a mechanical locking key 12 which is detachably arranged on the wire clamp main body 11; a hanging ring 13 is fixed at the tail end of the mechanical locking key 12; the hanging ring 13 is used for hanging the wire clamp 1; the grounding clamp 2 comprises a grounding clamp frame 21 and a grounding clamp lifting screw 22, the grounding clamp lifting screw 22 is installed on the grounding clamp frame 21 in a threaded connection mode, a key hole is formed in the upper end of the grounding clamp lifting screw 22, and the mechanical locking key 12 is uniquely matched with the key hole of the grounding clamp lifting screw 22. The front end of the mechanical locking key 12 is an unlocking part 121, the middle part of the mechanical locking key is provided with an external thread, the wire clamp body 11 is provided with a threaded hole, and the front end of the mechanical locking key 12 is inserted into the threaded hole of the wire clamp body 11; and rotating the mechanical locking key 12, wherein the middle part of the mechanical locking key 12 is matched with a threaded hole of the wire clamp main body 11, and the mechanical locking key 12 is installed on the wire clamp main body 1. The unlocking member 121 is in a rectangular parallelepiped shape; the key hole of the grounding clip lifting screw 22 is a rectangular parallelepiped groove. The upper part of the grounding clip lifting screw 22 is of a smooth round rod structure, the lower part of the grounding clip lifting screw is provided with external threads, and the bottom end of the grounding clip lifting screw is a cake-shaped crimping part 221. The grounding clamp frame 21 comprises a groove 211, a threaded hole is formed in one side wall of the groove 211, and the grounding clamp lifting screw 22 is in threaded connection with the threaded hole of the groove 211.
The invention improves the prior grounding wire device, the hanging ring at the outer side of the wire clamp 1 is designed into a detachable mechanical locking key 12, the upper end of the lifting screw rod 22 of the grounding clamp is designed into a smooth cylinder, and the upper end of the cylinder is made into a key hole matched with the mechanical locking key 12. The lifting of the grounding clamp lifting screw 22 can be controlled by the mechanical locking key 12, and the grounding clamp lifting screw 22 can be adjusted only by screwing the mechanical locking key 12 into a key hole at the top end of the grounding clamp lifting screw 22, so that the grounding clamp 2 is fixed on a grounding body. The tail end of the mechanical locking key 12 is fixed with a hanging ring 13, so that the grounding clamp lifting screw rod 22 can be conveniently fastened, the hanging ring which can be connected with an insulating rod is the only hanging ring on the wire clamp 1, and the insulating rod can be hung only through the hanging ring 13 on the wire clamp.
Therefore, in the operation process, an operator must first take off the mechanical locking key 12, fix the grounding clamp 2, then pull out the mechanical locking key 12, screw back the wire clamp 1, and then perform the hanging operation of the wire clamp 1, so as to ensure that the grounding end is firstly installed and then the wire end is installed when the grounding wire is installed. Similarly, when the grounding wire is removed, the wire clamp 1 must be removed, the mechanical locking key 12 must be inserted into the keyhole of the grounding clamp 2, and the grounding clamp 2 must be released, so that when the grounding wire is removed, the wire end must be removed first, and then the grounding end must be removed. The operation forces the operator to remove the mechanical locking key first, fix the grounding end, screw the mechanical locking key into the key hole outside the conductor clamp, and then perform the conductor end hanging operation.
The transmission line articulates the ground wire when the maintenance operation that has a power failure, mainly is for: (1) introducing residual charge on the transmission line into the ground; (2) the electric transmission line is prevented from generating electric shock accidents due to reverse power supply or induced electricity; (3) prevent the power transmission by mistake; (4) the operation of the operating personnel in the range of the ground wire is ensured, and the risk of electric shock is avoided. Therefore, the purpose of the patent is to force an operator to mount the grounding end and mount the wire end after mounting the grounding end according to the requirement of safety regulations by improving the grounding wire device, so as to avoid electric shock accidents.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (4)
1. The utility model provides a transmission line earth connection prevents mistake blocking device which characterized in that includes: a lead clamp (1) and a grounding clamp (2);
the wire guide clamp (1) comprises a wire guide clamp main body (11) and a mechanical locking key (12) which is detachably arranged on the wire guide clamp main body (11); a hanging ring (13) is fixed at the tail end of the mechanical locking key (12); the hanging ring (13) is used for hanging the wire clamp (1);
the grounding clamp (2) comprises a grounding clamp frame (21) and a grounding clamp lifting screw rod (22), the grounding clamp lifting screw rod (22) is installed on the grounding clamp frame (21) in a threaded connection mode, a key hole is formed in the upper end of the grounding clamp lifting screw rod (22), and the mechanical locking key (12) is matched with the key hole of the grounding clamp lifting screw rod (22);
the front end of the mechanical locking key (12) is an unlocking piece (121), the middle part of the mechanical locking key is provided with an external thread, a threaded hole is formed in the wire clamp main body (11), and the front end of the mechanical locking key (12) is inserted into the threaded hole of the wire clamp main body (11); rotating the mechanical locking key (12), wherein the middle part of the mechanical locking key (12) is matched with a threaded hole of the wire clamp main body (11), and the mechanical locking key (12) is installed on the wire clamp main body (11);
the grounding clamp frame (21) comprises a groove (211), a threaded hole is formed in one side wall of the groove (211), and the grounding clamp lifting screw (22) is connected in the threaded hole of the groove (211) in a threaded mode.
2. The device for preventing misoperation-locking of the ground wire of the power transmission line according to claim 1, wherein the unlocking piece (121) is in the shape of a cuboid.
3. The device for preventing misoperation-locking of the grounding wire of the power transmission line according to claim 2, wherein the keyhole of the lifting screw rod (22) of the grounding clamp is a rectangular parallelepiped groove.
4. The device for preventing misoperation and locking of the grounding wire of the power transmission line according to claim 1, wherein the upper part of the lifting screw rod (22) of the grounding clamp is of a smooth round rod structure, the lower part of the lifting screw rod is provided with external threads, and the bottom end of the lifting screw rod is a pressing part (221) in a round cake shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010752805.7A CN111883954B (en) | 2020-07-30 | 2020-07-30 | Error-locking prevention device for grounding wire of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010752805.7A CN111883954B (en) | 2020-07-30 | 2020-07-30 | Error-locking prevention device for grounding wire of power transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111883954A CN111883954A (en) | 2020-11-03 |
| CN111883954B true CN111883954B (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010752805.7A Active CN111883954B (en) | 2020-07-30 | 2020-07-30 | Error-locking prevention device for grounding wire of power transmission line |
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| Country | Link |
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| CN (1) | CN111883954B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577382B (en) * | 2022-04-07 | 2024-01-23 | 国网江苏省电力有限公司超高压分公司 | Overhead line grounding wire sequential assembling and disassembling protection device and use method |
| CN115133301B (en) * | 2022-08-30 | 2022-12-20 | 国网山西省电力公司超高压变电分公司 | Device and method for ensuring disassembly and assembly sequence of power grounding wires |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202905991U (en) * | 2012-10-19 | 2013-04-24 | 沧州供电公司 | Safe operation electric ground wire |
| CN104241889A (en) * | 2014-09-02 | 2014-12-24 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Locking type wire grounding wire clip |
| CN104868319A (en) * | 2015-05-07 | 2015-08-26 | 杨瑞亮 | Safe grounding wire |
| JP2019062625A (en) * | 2017-09-26 | 2019-04-18 | 中国電力株式会社 | Grounding device |
| CN110635264A (en) * | 2019-10-22 | 2019-12-31 | 国网江苏省电力有限公司徐州供电分公司 | Novel grounding wire capable of preventing misoperation |
| CN210350147U (en) * | 2019-10-22 | 2020-04-17 | 国网江苏省电力有限公司徐州供电分公司 | Novel grounding wire capable of preventing misoperation |
| CN210897694U (en) * | 2019-12-04 | 2020-06-30 | 广东电网有限责任公司 | Grounding rod with program lock |
-
2020
- 2020-07-30 CN CN202010752805.7A patent/CN111883954B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202905991U (en) * | 2012-10-19 | 2013-04-24 | 沧州供电公司 | Safe operation electric ground wire |
| CN104241889A (en) * | 2014-09-02 | 2014-12-24 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Locking type wire grounding wire clip |
| CN104868319A (en) * | 2015-05-07 | 2015-08-26 | 杨瑞亮 | Safe grounding wire |
| JP2019062625A (en) * | 2017-09-26 | 2019-04-18 | 中国電力株式会社 | Grounding device |
| CN110635264A (en) * | 2019-10-22 | 2019-12-31 | 国网江苏省电力有限公司徐州供电分公司 | Novel grounding wire capable of preventing misoperation |
| CN210350147U (en) * | 2019-10-22 | 2020-04-17 | 国网江苏省电力有限公司徐州供电分公司 | Novel grounding wire capable of preventing misoperation |
| CN210897694U (en) * | 2019-12-04 | 2020-06-30 | 广东电网有限责任公司 | Grounding rod with program lock |
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| Publication number | Publication date |
|---|---|
| CN111883954A (en) | 2020-11-03 |
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