CN110911862B - A spiral grounding wire - Google Patents

A spiral grounding wire

Info

Publication number
CN110911862B
CN110911862B CN201911207644.7A CN201911207644A CN110911862B CN 110911862 B CN110911862 B CN 110911862B CN 201911207644 A CN201911207644 A CN 201911207644A CN 110911862 B CN110911862 B CN 110911862B
Authority
CN
China
Prior art keywords
piece
locking
outer cylinder
clamping
unlocking
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
Application number
CN201911207644.7A
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Chinese (zh)
Other versions
CN110911862A (en
Inventor
燕侯智
陶钢
刘兴艳
罗世豪
李易鸿
刘海旭
杜银
吴锋宇
王佩霖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Power Grid Co Ltd
Original Assignee
Guizhou Power Grid Co Ltd
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Filing date
Publication date
Application filed by Guizhou Power Grid Co Ltd filed Critical Guizhou Power Grid Co Ltd
Priority to CN201911207644.7A priority Critical patent/CN110911862B/en
Publication of CN110911862A publication Critical patent/CN110911862A/en
Application granted granted Critical
Publication of CN110911862B publication Critical patent/CN110911862B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00Individual 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
    • H01R11/11End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12End pieces terminating in an eye, hook, or fork
    • H01R11/14End 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

Landscapes

  • Insulating Bodies (AREA)
  • Clamps And Clips (AREA)

Abstract

本发明涉及接地线技术领域,尤其是指一种螺旋式接地线,其包括绝缘外筒以及固设于绝缘外筒顶端的可导电的固定夹件,所述绝缘外筒滑动卡接有可向固定夹件靠近或者远离的活动夹件,所述绝缘外筒的滑动连接有用于控制所述活动夹件移动的调节组件,所述调节组件设置有用于固定所述活动夹件的锁合组件。本发明采用调节组件控制活动夹件移动,采用锁合组件固定活动夹件,可以更加快速调节活动夹件,并且对活动夹件的固定也非常牢固,从而提高了电线接地的速度和质量。

The present invention relates to the field of grounding wire technology, and more particularly to a spiral grounding wire comprising an insulating outer tube and a conductive fixing clamp fixed to the top of the insulating outer tube. The insulating outer tube is slidably engaged with a movable clamp that can move toward or away from the fixing clamp. The insulating outer tube is slidably connected to an adjustment assembly for controlling the movement of the movable clamp, and the adjustment assembly is provided with a locking assembly for securing the movable clamp. The present invention utilizes an adjustment assembly to control the movement of the movable clamp and a locking assembly to secure the movable clamp, enabling faster adjustment of the movable clamp and providing a very secure fixation of the movable clamp, thereby improving the speed and quality of wire grounding.

Description

Spiral grounding wire
Technical Field
The application relates to the technical field of grounding wires, in particular to a spiral grounding wire.
Background
Along with the continuous improvement of the electric power engineering technology in China, the application method of the spiral rotatable grounding wire in China is also continuously improved. At present, most of substations of 10KV, 110KV and 220KV adopt flat-mouth spiral grounding wires, and the grounding wires have the advantages of firm clamping, but because the wire clamps are directly connected to the spiral structure, when the grounding wires are installed and fastened in a rotating manner, the wire clamps can rotate along the rotating direction at the same time, so that the grounding wires cannot be installed smoothly.
When a worker performs power failure maintenance on a certain section of transformer substation line, the section of line needs to be powered off, and a plurality of temporary grounding wires need to be respectively hung at two ends of the inspection line in order to further ensure personal safety of the worker. The general earth connection includes the insulating tube and sets up in the clamping device that insulating tube top is used for the centre gripping electric wire, and the insulating rod includes sleeve and threaded connection in telescopic interior pole, and clamping device is including setting up in telescopic mounting and setting up in the moving part of interior pole, through rotating interior pole so that clamping device presss from both sides tight electric wire during the use. But clamping device adopts threaded connection's mode to adjust, and the stroke of screw thread is longer, and adjustment efficiency is lower, and it is very troublesome to use.
Disclosure of Invention
The technical problem to be solved by the embodiment of the application is that the clamping device of the general grounding wire is regulated in a threaded connection mode, the threaded stroke is longer, the regulating efficiency is lower, and the use is very troublesome.
In order to solve the technical problems, the embodiment of the application provides a spiral grounding wire, which adopts the following technical scheme that the spiral grounding wire comprises an insulating outer cylinder and a conductive fixed clamping piece fixedly arranged at the top end of the insulating outer cylinder, wherein the insulating outer cylinder is in sliding clamping connection with a movable clamping piece which can approach or separate from the fixed clamping piece, the insulating outer cylinder is in sliding connection with an adjusting component for controlling the movable clamping piece to move, and the adjusting component is provided with a locking component for fixing the movable clamping piece.
Further, the adjusting part is including setting up in insulating urceolus interior pole, set firmly in the connecting rod on interior pole top, set firmly in the threaded rod on connecting rod top, the part slip joint that activity folder and lie in insulating urceolus has the sliding sleeve, the sliding sleeve with insulating sleeve slip joint, the sliding sleeve is provided with the snap ring, the connecting rod is provided with the annular, the snap ring joint is in the annular, just the connecting rod can be in the snap ring internal rotation.
Further, the locking assembly comprises a locking piece movably arranged on the sliding sleeve, a locking groove arranged on the inner wall of the insulating outer cylinder and matched with the locking piece in a clamping manner, an upper locking piece arranged on the sliding sleeve and used for controlling the locking piece to be clamped into the locking groove, and an unlocking piece used for controlling the locking piece to be separated from the locking groove.
Further, a plurality of the locking grooves are ratchet grooves which are arranged upwards along the axial inclination of the insulating outer cylinder, the side wall of the sliding sleeve is provided with an installing groove, the locking piece is hinged to the installing groove and comprises an upper locking end which is matched with the ratchet grooves in a clamping mode, the upper locking piece is an elastic piece, the elastic piece is installed in the installing groove, one end, away from the installing groove, of the elastic piece is connected with the upper locking end, and when the elastic piece is in a natural state, the upper locking end is abutted to the groove bottom of the ratchet groove.
Further, the locking piece includes the unlocking end of keeping away from last locking end, the unlocking end is located the sliding sleeve, the unblock piece set up in the connecting rod outer wall rotates the connecting rod can make unblock piece butt unlocking end, works as the unlocking end butt when the unblock piece, go up the locking end and can break away from the ratchet tooth groove.
Further, the unlocking piece is a guide plate which is obliquely arranged on the outer wall of the connecting rod and is in a spiral blade shape, the inclination direction of the guide plate is opposite to the inclination direction of the spiral line, the top end of the guide plate is higher than the unlocking end, the unlocking end is provided with an inclined plane, and the inclination direction of the inclined plane is the same as the inclination direction of the guide plate.
Further, the fixed clamping piece is L-shaped and comprises a supporting part connected with the insulating outer cylinder and a first clamping part fixedly arranged at the top end of the supporting part, a first anti-slip pattern is arranged at the bottom end of the first clamping part, the movable clamping piece is L-shaped and comprises a sliding part in sliding clamping connection with the insulating outer cylinder and a second clamping part fixedly arranged at the top end of the sliding part and in butt fit with the clamping part, and a second anti-slip pattern is arranged at the top end of the second clamping part.
Further, the outer wall of the sliding part is axially provided with a clamping protrusion along the sliding part, the top end of the insulating outer cylinder is provided with a limiting plate, and the limiting plate is provided with a limiting hole in sliding fit with the sliding part.
Further, the extension subassembly of insulating urceolus detachable connection.
Further, the extension assembly comprises an extension outer barrel and an extension rod, the extension outer barrel is in threaded connection with the insulation outer barrel, and the extension rod is located in the extension outer barrel and in threaded connection with the adjusting assembly.
Compared with the prior art, the movable clamping piece is controlled to move by the adjusting component, the movable clamping piece is fixed by the locking component, the movable clamping piece can be adjusted more quickly, the movable clamping piece is fixed very firmly, and therefore the grounding speed and the grounding quality of the electric wire are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an embodiment of the present application;
FIG. 2 is a schematic diagram of an internal structure of an embodiment of the present application;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a cross-sectional view of an extension assembly according to an embodiment of the present application.
The reference numerals are 10, a fixed clamping piece, 11, a supporting part, 12, a first clamping part, 13, a first anti-slip thread, 20, a movable clamping piece, 21, a second clamping part, 22, a second anti-slip thread, 23, a sliding part, 24, a clamping protrusion, 30, an insulating outer cylinder, 31, a first clamping groove, 32, a ratchet slot, 33, a limiting plate, 331, a limiting hole, 34, a first internal thread, 41, an inner rod, 411, a third internal thread, 42, a connecting rod, 421, a ring groove, 43, a threaded rod, 44, a sliding sleeve, 441, a clamping ring, 443, a second clamping groove, 444, a mounting groove, 50, a locking component, 51, a locking piece, 511, an upper locking end, 512, an unlocking end, 513, a bevel, 52, an unlocking piece, 53, an elastic piece, 60, an lengthening component, 61, an outer cylinder, 611, a first external thread, 612, a second internal thread, 62, an lengthening rod, 621, a second external thread, 622 and a fourth internal thread.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used in the description of this application are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of this application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to make the person skilled in the art better understand the solution of the present application, the technical solution of the embodiment of the present application will be clearly and completely described below with reference to the accompanying drawings.
Examples
As shown in fig. 1, a spiral grounding wire comprises an insulation outer cylinder 30 and a conductive fixed clamping piece 10 fixedly arranged at the top end of the insulation outer cylinder 30, wherein the insulation outer cylinder 30 is slidably clamped with a movable clamping piece 20 which can approach or separate from the fixed clamping piece 10, the insulation outer cylinder 30 is slidably connected with an adjusting component (not labeled in the figure) for controlling the movable clamping piece 20 to move, and the adjusting component is provided with a locking component 50 (see fig. 3) for fixing the movable clamping piece 20. In specific work, the fixed clamping piece 10 is firstly hung on an electric wire, then the movable clamping piece 20 is controlled to move upwards through the adjusting component, so that the fixed clamping piece 10 and the movable clamping piece 20 clamp the electric wire, then the movable clamping piece 20 is fixed through the locking component 50, and a wire is connected to the fixed clamping piece 10 for grounding.
As shown in fig. 1 and 2, the fixed clamp 10 is L-shaped and comprises a supporting part 11 connected with an insulation outer cylinder 30 and a first clamping part 12 fixedly arranged at the top end of the supporting part 11, a first anti-slip pattern 13 is arranged at the bottom end of the first clamping part 12, the movable clamp 20 is L-shaped and comprises a sliding part 23 in sliding clamping connection with the insulation outer cylinder 30 and a second clamping part 21 fixedly arranged at the top end of the sliding part 23 and in abutting fit with the clamping part, and a second anti-slip pattern 22 is arranged at the top end of the second clamping part 21. Specifically, the fixed clamping piece 10 and the movable clamping piece 20 are made of conductive materials, the first clamping portion 12 is bent upwards, the first clamping portion 12 can be conveniently hung on a wire, the second clamping portion 21 is matched with the first clamping portion 12 in a concave-convex mode, the second clamping portion 21 is provided with the second anti-skid pattern 22, the second clamping portion is arranged in a concave-down mode, and when the wire is clamped between the first anti-skid pattern 13 and the second anti-skid pattern 22, the wire is not easy to separate from the first clamping portion 12 and the second clamping portion 21.
Preferably, the outer wall of the sliding portion 23 is provided with a clamping protrusion 24 along the axial direction of the sliding portion 23, the top end of the insulating outer cylinder 30 is provided with a limiting plate 33, and the limiting plate 33 is provided with a limiting hole 331 in sliding fit with the sliding portion 23. The sliding portion 23 can slide along the limiting hole 331, but cannot rotate relative to the insulating jacket, so that the movable clamping piece 20 can be conveniently adjusted, and the adjusting component is not easy to separate from the insulating jacket.
As shown in fig. 3, the adjusting assembly includes an inner rod 41 disposed in the insulating outer cylinder 30, a connecting rod 42 fixedly disposed at the top end of the inner rod 41, and a threaded rod 43 fixedly disposed at the top end of the connecting rod 42, a sliding sleeve 44 is slidably clamped to the movable clamping member 20 and the portion located in the insulating outer cylinder 30, the sliding sleeve 44 is slidably clamped to the insulating sleeve, a clamping ring 441 is disposed on the sliding sleeve 44, a ring groove 421 is disposed on the connecting rod 42, the clamping ring 441 is clamped to the ring groove 421, and the connecting rod 42 can rotate in the clamping ring 441. Specifically, the inner wall of the insulating outer cylinder 30 is provided with a first clamping groove 31 along the axial direction thereof, the outer wall of the sliding sleeve 44 is provided with a first protruding block (not shown in the figure) that is slidably clamped with the first clamping groove 31, the inner wall of the sliding sleeve 44 is provided with a second clamping groove 443 along the axial direction thereof, the clamping protrusion 24 is slidably clamped with the second clamping groove 443, the bottom of the sliding part 23 is provided with a threaded hole, the threaded rod 43 is in threaded connection with the threaded hole, and the sliding part 23 can move upwards or downwards relative to the limiting plate 33 by rotating the inner rod 41.
As shown in fig. 3, the locking assembly 50 includes a locking piece 51 movably disposed on the sliding sleeve 44, a locking groove disposed on an inner wall of the insulating outer cylinder 30 and engaged with the locking piece 51, an upper locking piece disposed on the sliding sleeve 44 and used for controlling the locking piece 51 to be locked into the locking groove, and an unlocking piece 52 used for controlling the locking piece 51 to be separated from the locking groove. Specifically, the plurality of locking grooves are ratchet grooves 32 which are obliquely upwards arranged along the axial direction of the insulating outer cylinder 30, the side wall of the sliding sleeve 44 is provided with a mounting groove 444, the locking piece 51 is hinged to the mounting groove 444, the locking piece 51 comprises an upper locking end 511 which is matched with the ratchet grooves 32 in a clamping mode, the upper locking piece is an elastic piece 53, the elastic piece 53 can adopt a spring and an elastic piece, the elastic piece 53 is mounted in the mounting groove 444 for mounting, one end of the elastic piece 53, which is far away from the mounting groove 444, is connected with the upper locking end 511, and when the elastic piece 53 is in a natural state, the upper locking end 511 abuts against the groove bottom of the ratchet groove 32. In this embodiment, the locking groove is a ratchet groove 32, the ratchet groove 32 is inclined upwards, when the inner rod 41 is pushed upwards, the upper locking end 511 can slide upwards along the ratchet groove 32, and under the action of the elastic piece 53, the upper locking end 511 can be clamped in the ratchet groove 32, so that the inner rod 41 is not easy to slide downwards. In a specific operation, the fixed clip member 10 is hung on the electric wire, then the inner tube is pushed upward to bring the movable clip member 20 into abutment with the electric wire, and then the inner rod 41 is rotated to move the sliding portion 23 upward with respect to the limiting plate 33, thereby causing the fixed clip member 10 and the movable clip member 20 to clamp the electric wire.
As shown in fig. 3, the locking piece 51 includes an unlocking end 512 far away from the locking end 511, the unlocking end 512 is located in the sliding sleeve 44, the unlocking piece 52 is disposed on the outer wall of the connecting rod 42, the unlocking piece 52 can be abutted against the unlocking end 512 by rotating the connecting rod 42, and when the unlocking end 512 abuts against the unlocking piece 52, the locking end 511 can be separated from the ratchet slot 32. Specifically, the unlocking member 52 is a guide plate that is obliquely disposed on the outer wall of the connecting rod 42 and is shaped like a propeller blade, the oblique direction of the guide plate is opposite to the oblique direction of the screw line, the top end of the guide plate is higher than the unlocking end 512, the unlocking end 512 is provided with an inclined plane 513, and the oblique direction of the inclined plane 513 is the same as the oblique direction of the guide plate. As shown in the drawing, when the threaded rod 43 rotates from left to right, the threaded rod 43 is separated from the threaded hole, the sliding part 23 moves upward relative to the sliding sleeve 44, the upper end surface of the guide plate contacts the unlocking end 512, because the guide plate is in the shape of a propeller blade, the unlocking end 512 slides from the bottom end of the guide plate to the top end of the guide plate relative to the guide plate, the unlocking end 512 slides a certain distance to the middle part of the guide plate and then can turn over the guide plate, at the moment, the upper locking end 511 does not separate from the ratchet slot 32, so that when the procedure of clamping the electric wire by the first clamping part 12 and the second clamping part 21 is completed, the movable clamping piece 20 does not slide downwards, when the threaded rod 43 rotates from right to left, the threaded rod 43 enters the threaded hole, the sliding part 23 moves downward relative to the sliding sleeve 44, the lower end surface of the guide plate contacts the unlocking end 512, the unlocking end 512 slides from the upper end of the guide plate to the lower end of the guide plate relative to the guide plate, and when the unlocking end 512 slides to the lower end of the guide plate, the upper end of the guide plate slides to the ratchet slot 32, at the moment, the upper locking end 511 can separate from the ratchet slot 32, and the sliding sleeve 44 can slide relative to the insulating outer cylinder 30. The locking device adopted by the invention can complete the locking and unlocking processes by changing the rotation direction of the inner rod 41, thereby improving the grounding speed of the electric wire.
As shown in fig. 4, in order to accommodate wires of different heights, the insulation outer tube 30 is detachably connected with an extension assembly 60, the extension assembly 60 includes an extension outer tube 61 and an extension rod 62, the extension outer tube 61 is screwed with the insulation outer tube 30, and the extension rod 62 is located in the extension outer tube 61 and is screwed with the adjusting assembly. Specifically, the bottom end of the insulation outer cylinder 30 is provided with a first internal thread 34, one end of the elongated outer cylinder 61 is provided with a first external thread 611 in threaded connection with the first internal thread 34, the other end of the elongated outer cylinder 61 is provided with a second internal thread 612, and the first external thread 611 between the two elongated outer cylinders 61 is in threaded fit with the second internal thread 612. The bottom end of the inner rod 41 is provided with a third internal thread 411, one end of the extension rod 62 is provided with a second external thread 621 in threaded connection with the third internal thread 411, the other end of the extension rod 62 is provided with a fourth internal thread 622, and the second external thread 621 between the two extension rods 62 is in threaded fit with the fourth internal thread 622.
Working principle:
The wire connection process comprises the steps of firstly hanging the fixed clamping piece 10 on a wire, then pushing the inner tube upwards to enable the movable clamping piece 20 to abut against the wire, then rotating the inner rod 41 to enable the sliding part 23 to move upwards relative to the limiting plate 33, so that the fixed clamping piece 10 and the movable clamping piece 20 clamp the wire, and reversely rotating the inner rod 41 to enable the tangent plane of the unlocking end 512 to abut against the lower end face of the guide plate, at the moment, enabling the upper locking end 511 to be separated from the ratchet groove 32, then pulling the inner rod 41 downwards to enable the movable clamping piece 20 to be away from the wire, and finally taking down the fixed clamping piece 10.
In summary, according to the invention, the movable clamp 20 is controlled to move by the adjusting assembly, the movable clamp 20 is fixed by the locking assembly 50, and the locking and unlocking processes can be completed by changing the rotation direction of the inner rod 41, so that the movable clamp 20 is adjusted more quickly, the movable clamp 20 is fixed very firmly, and the grounding speed and quality of the electric wire are improved.
It is apparent that the above-described embodiments are only some embodiments of the present application, but not all embodiments, and the preferred embodiments of the present application are shown in the drawings, which do not limit the scope of the patent claims. This application may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the application are directly or indirectly applied to other related technical fields, and are also within the scope of the application.

Claims (5)

1. The spiral grounding wire comprises an insulation outer cylinder and a conductive fixed clamping piece fixedly arranged at the top end of the insulation outer cylinder, and is characterized in that the insulation outer cylinder is slidably clamped with a movable clamping piece which can approach or depart from the fixed clamping piece, the insulation outer cylinder is slidably connected with an adjusting component for controlling the movable clamping piece to move, and the adjusting component is provided with a locking component for fixing the movable clamping piece;
The adjusting component comprises an inner rod arranged in the insulating outer cylinder, a connecting rod fixedly arranged at the top end of the inner rod and a threaded rod fixedly arranged at the top end of the connecting rod, a sliding sleeve is slidably clamped at the part of the movable clamping piece, which is positioned in the insulating outer cylinder, the sliding sleeve is slidably clamped with the insulating sleeve, a clamping ring is arranged on the sliding sleeve, a ring groove is arranged on the connecting rod, the clamping ring is clamped in the ring groove, and the connecting rod can rotate in the clamping ring;
The locking assembly comprises a locking piece movably arranged on the sliding sleeve, a locking groove arranged on the inner wall of the insulating outer cylinder and matched with the locking piece in a clamping manner, an upper locking piece arranged on the sliding sleeve and used for controlling the locking piece to be clamped into the locking groove, and an unlocking piece used for controlling the locking piece to be separated from the locking groove;
The locking grooves are ratchet grooves which are obliquely upwards arranged along the axial direction of the insulating outer cylinder, the side wall of the sliding sleeve is provided with a mounting groove, the locking block is hinged to the mounting groove and comprises an upper locking end which is in clamping fit with the ratchet grooves, the upper locking piece is an elastic piece, the elastic piece is mounted on the mounting groove, one end, away from the mounting groove, of the elastic piece is connected with the upper locking end, and when the elastic piece is in a natural state, the upper locking end is abutted against the groove bottom of the ratchet grooves;
when the inner rod is pushed upwards, the upper locking end slides upwards along the ratchet groove, and is clamped in the ratchet groove under the action of the elastic piece;
The insulation outer cylinder comprises an extension assembly which is detachably connected, wherein the extension assembly comprises an extension outer cylinder and an extension rod, the extension outer cylinder is in threaded connection with the insulation outer cylinder, and the extension rod is positioned in the extension outer cylinder and in threaded connection with the adjusting assembly;
The bottom of the inner rod is provided with a third inner thread, one end of the extension rod is provided with a second outer thread in threaded connection with the third inner thread, the other end of the extension rod is provided with a fourth inner thread, and the second outer thread between the two extension rods is in threaded fit with the fourth inner thread.
2. The spiral grounding wire of claim 1, wherein the locking piece comprises an unlocking end far away from the locking end, the unlocking end is located in the sliding sleeve, the unlocking piece is arranged on the outer wall of the connecting rod, the unlocking piece can be abutted against the unlocking end by rotating the connecting rod, and when the unlocking end is abutted against the unlocking piece, the locking end can be separated from the ratchet slot.
3. The spiral grounding wire of claim 2, wherein the unlocking piece is a guide plate which is obliquely arranged on the outer wall of the connecting rod and is in a spiral blade shape, the oblique direction of the guide plate is opposite to the oblique direction of the spiral line, the top end of the guide plate is higher than the unlocking end, the unlocking end is provided with an inclined plane, and the oblique direction of the inclined plane is the same as the oblique direction of the guide plate.
4. A spiral grounding wire according to any one of claims 1-3, wherein the fixed clamping piece is L-shaped and comprises a supporting part connected with the insulation outer cylinder and a first clamping part fixedly arranged at the top end of the supporting part, a first anti-slip pattern is arranged at the bottom end of the first clamping part, the movable clamping piece is L-shaped and comprises a sliding part in sliding clamping connection with the insulation outer cylinder and a second clamping part fixedly arranged at the top end of the sliding part and in abutting fit with the clamping part, and a second anti-slip pattern is arranged at the top end of the second clamping part.
5. The spiral grounding wire of claim 4, wherein the outer wall of the sliding part is provided with a clamping protrusion along the axial direction of the sliding part, the top end of the insulating outer cylinder is provided with a limiting plate, and the limiting plate is provided with a limiting hole in sliding fit with the sliding part.
CN201911207644.7A 2019-11-30 2019-11-30 A spiral grounding wire Active CN110911862B (en)

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Application Number Priority Date Filing Date Title
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CN110911862B true CN110911862B (en) 2025-08-22

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CN111525483B (en) * 2020-04-14 2021-03-30 贵州电网有限责任公司 Tool for rapidly increasing distance between power lines
CN111525484B (en) * 2020-04-14 2021-03-30 贵州电网有限责任公司 Adjustable power line spacing rod
CN112290248B (en) * 2020-10-15 2022-01-04 贵州电网有限责任公司 Plug-type electrified live wire clamp of taking
CN119209048B (en) * 2024-11-29 2025-01-28 国网安徽省电力有限公司宣城供电公司 Flat-mouth grounding device

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