CN107257040B - Pull-back swing arm type short circuit grounding wire clamp and grounding and disassembling method - Google Patents
Pull-back swing arm type short circuit grounding wire clamp and grounding and disassembling method Download PDFInfo
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- CN107257040B CN107257040B CN201710388566.XA CN201710388566A CN107257040B CN 107257040 B CN107257040 B CN 107257040B CN 201710388566 A CN201710388566 A CN 201710388566A CN 107257040 B CN107257040 B CN 107257040B
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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
- 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
- H01R11/22—End pieces terminating in a spring clip
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- Electric Cable Installation (AREA)
Abstract
一种回拉摆臂式短路接地线夹及接地和拆卸方法。目前，现有的短路接地线是由导线线夹、接地线、接地夹等组成。线路检修时，为防止误送电、其它支路倒送电或感应电压等对人身或设备的伤害就必须装设临时短路接地线。一种回拉摆臂式短路接地线夹，其组成包括：左侧夹板（1）、右侧夹板（2）、回拉摆臂（3）、顶杆（5）、U型压板（11）和扭簧（18），右侧夹板通过螺栓二（7）加装一个回拉摆臂，回拉摆臂一端设有摆臂轴孔（25）和卡面（8），另一端设有摆臂头孔（29）、两个锁紧螺母孔（22）和U型压板，所述的回拉摆臂是J型金属构件，外侧设有圆弧形槽。本发明应用于拉摆臂式短路接地线夹。
A pullback swing arm type short-circuit grounding clamp and a grounding and dismantling method. At present, the existing short-circuit grounding wire is composed of wire clips, grounding wires, grounding clips, and the like. During line maintenance, a temporary short-circuit grounding wire must be installed to prevent damage to persons or equipment due to wrong power transmission, reverse power transmission of other branches, or induced voltage. A pullback swing arm type short-circuit grounding clamp, comprising: a left splint (1), a right splint (2), a pullback swing arm (3), an ejector rod (5), and a U-shaped pressure plate (11) and torsion spring (18), a pullback swing arm is installed on the right splint through bolt two (7), one end of the pullback swing arm is provided with a swing arm shaft hole (25) and a clamping surface (8), and the other end is provided with a swing arm The arm head hole (29), the two locking nut holes (22) and the U-shaped pressing plate are provided. The invention is applied to the pull-swing arm type short-circuit grounding clamp.
Description
The technical field is as follows:
the invention relates to a pull-back swing arm type short circuit grounding wire clamp and a grounding and disassembling method.
Background art:
at present, the existing short circuit grounding wire is composed of a wire clamp, a grounding wire, a grounding clamp and the like. When the line is overhauled, a temporary short circuit grounding wire is required to be arranged to prevent the damage of mistaken power transmission, reverse power transmission of other branches, induced voltage and the like to human bodies or equipment. However, the conventional duckbill impact type ground clamp utilizes the self weight of the clamp to impact the support mandril in the clamp downwards and make the support mandril separate from the support to release the elasticity of the torsion spring to clamp the wire. Because the earth connection is longer, thicker self weight is far greater than the weight of fastener, and downward impulsive force is not enough, supports the ejector pin in the fastener and can not break away from the support, and some splint on the fastener both sides install the pouring weight additional, and this has increased the fastener dead weight, and the effect of improvement is also not obvious. The interference of wind-force often makes the fastener duckbilled mouth open the accurate alignment wire, increases and installs the degree of difficulty. Also, the drainage wire on the inner corner side of the turret cannot be installed because it is not under the cross arm.
The invention provides a novel wire clamp, aiming at solving the problems that the existing grounding wire is difficult to install, wind power interference is caused, and a drainage wire at the inner angle side of a corner tower cannot be directly installed transversely but below the existing grounding wire.
The invention content is as follows:
the invention aims to provide a pull-back swing arm type short circuit grounding wire clamp, which relates to a short circuit grounding wire clamp of a high-voltage and ultra-high voltage power circuit, and particularly can overcome the defects that the traditional wire clamp is difficult to install, is easy to be interfered by wind power and cannot be directly installed on a drainage wire at the inner corner side of a corner tower.
The above purpose is realized by the following technical scheme:
1. the invention has simple and quick operation, can be arranged at the inner angle side of the corner tower with the drainage lead not being horizontal but below, is not interfered by wind power, and avoids electric shock hazard. The metal J-shaped pull-back swing arm connected with the clamp plate on one side of the wire clamp through the hinge is adopted, the action point of the pulling force on the wire clamp is changed, and the vertical and transverse assembling and disassembling operations in a pull-back mode are realized. The tension replaces the dead weight of the wire clamp to trigger the wire clamp, is not influenced by the length of a grounding wire and the interference of wind power, and is suitable for various high-voltage and ultra (extra) high-voltage grade lines.
The invention designs a pull-back swing arm on the basis of the existing wire clamp form, so that the wire clamp is in a pull-back hook type state, the pull force of a person replaces the gravity, and thus, the short-circuit grounding wire can be easily installed by pulling the wire clamp upwards by an operator. The pull-back swing arm is a J-shaped aluminum alloy casting hook, one end of the pull-back swing arm is connected with a clamping plate on one side of the wire clamp through a hinge, and the other side of the pull-back swing arm is used for fixing the grounding wire. When installing the earth connection, earlier rotatory to the duckbilled direction with the swing arm, until swing arm and splint side combine, separately fastener duckbilled (both sides splint) hard, simultaneously, the swing arm card face is also blocked by the splint top surface of fastener opposite side, and the fastener has just presented pull-back hook formula state. Then, arrange the fastener in the wire below, upwards pull up insulating rope or earth connection, the support ejector pin in the fastener is out of stock and is carried the wire, installs successfully, and simultaneously, the top surface of fastener splint loses the kayser effect to the swing arm card face, and the swing arm upwards swings back rapidly, makes fastener duckbilled direction lower, and the insulating rope of secondary pulling or earth connection, the fastener has just been dismantled.
The invention is used for short circuit grounding of a high-voltage power line, and can overcome the defects of difficult installation, no wind interference and installation at the inner corner side of a corner tower. A pull-back swing arm is designed on the existing wire clamp, so that the wire clamp is in a pull-back hook type state, the pull force of a person replaces gravity to impact a wire, and the wire clamp can be assembled and disassembled by pulling. The pull-back swing arm is a J-shaped aluminum alloy casting hook, one end of the pull-back swing arm is connected with a clamping plate on one side of the wire clamp through a hinge, and the other side of the pull-back swing arm is used for fixing the grounding wire. The pull-back swing arm changes the action point of tension of the wire clamp and realizes vertical and horizontal assembling and disassembling operations in a pull-back mode.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of the components of fig. 1.
Figure 3 is a demonstration view of the wire clamp pulling back the swing arm action when installing the ground wire.
Figure 4 is a demonstration view of the wire clamp pull back swing arm action.
Figure 5 is a demonstration of the clip pulling back swing arm action when disassembling the ground wire.
FIG. 6 is a schematic view of the operation of assembling and disassembling the corner tower.
FIG. 7 is a schematic view of the assembly and disassembly operation of the linear tower.
In the figure: 1. left side (single shaft hole) clamp plate, 2 right side (double shaft hole) clamp plate, 3 pullback swing arm, 4 ground wire, 5 ejector rod, 6 bolt I, 7 bolt II, 8 clamping surface, 9 ground wire sleeve joint, 10 bolt III, 11U-shaped press plate, 12 bolt IV, 13 locking bolt, 14 ejector rod rotating shaft I, 15 ejector rod clamping shaft, 16 ejector rod shaft hole I, 17 ejector rod shaft hole II, 18 torsion spring, 19 nut I, 20 left and right clamp plate rotating hole, 21 pullback swing arm rotating hole, 22 locking nut hole, 23 ejector rod movable groove, 24 ground wire sleeve joint nut hole, 25 shaft hole, 26 ejector rod shaft hole III, 27 left clamp plate screw hole, 28U-shaped press plate hole, 29 swing arm head hole, 30 nut II, 31 lead wire, 32 lead wire, 33 lead wire, 34 insulator string, 35 pullback swing arm clamp, 36. traditional wire clamp, 37 grounding clamp, 38 iron tower cross arm.
The specific implementation mode is as follows:
example 1:
the utility model provides a pull-back swing arm formula short circuit ground clamp, its constitution includes: the left side splint 1, the right side splint 2, the pull-back swing arm 3, the ejector rod 5, the U-shaped pressing plate 11 and the torsional spring 18, the right side splint 2 is additionally provided with one pull-back swing arm 3 through a bolt II 7, one end of the pull-back swing arm 3 is provided with a swing arm shaft hole 25 and a clamping surface 8, the other end of the pull-back swing arm is provided with a swing arm head hole 29, two locking nut holes 22 and the U-shaped pressing plate 11, the pull-back swing arm 3 is a J-shaped metal component, the outer side of the pull-back swing arm is provided with an arc groove, a bolt I6 penetrates through the left side splint upper hole 20 and the side splint upper hole 20, then penetrates through the torsional spring 18, then penetrates through the splint lower hole 20 and screws the nut I19, a bolt II 7 penetrates through the right side splint upper hole 21, then penetrates through the pull-back swing arm 3 shaft hole 25, then penetrates through the lower hole 21, screws the nut I19, and a third bolt 10 penetrates through a nut hole 24 of a sleeve joint of the grounding wire and is screwed on a screw hole 27 of the left clamping plate, the U-shaped pressing plate 11 presses the grounding wire 4, a fourth bolt 12 penetrates through a hole 28 of the U-shaped pressing plate and a hole 29 of the swing arm head and is screwed on a second nut 30, and a locking bolt 13 is screwed into a locking nut hole 22 to lock the grounding wire 4.
Example 2:
the grounding method of the pull-back swing arm type short circuit grounding clamp according to embodiment 1, the method comprising the steps of:
(1) when installing the earth connection: the wire 31 of the grounding wire 4 or the insulating rope 32 is pulled downwards to move upwards relatively to impact the ejector rod 5, the ejector rod 5 swings upwards around the first ejector rod rotating shaft 14 to separate from the support, the left clamping plate 1 and the right clamping plate 2 rotate around the first bolt 6 under the elastic action of the torsion spring 18 to release the elastic force to clamp the wire 31, meanwhile, the left clamping plate and the swing arm clamping surface 8 are separated from each other, and the resistance of the swing arm 3 is pulled back to disappear and can rotate upwards freely.
(2) When the grounding wire is disassembled: the wire 31 of the ground wire 4 or the insulating rope 32 is pulled upwards to move downwards relatively to separate from the wire clamp, the ready state of the ground wire installation is recovered, the pull-back swing arm 3 is combined with the right clamp plate by swinging clockwise downwards, the left clamp plate 1 and the right clamp plate 2 are separated by hand to overcome the elasticity of the torsion spring until the ejector rod 5 falls and pushes the ejector rod clamping shaft 15, and the ready state of the ground wire installation is completed.
(3) When the inner corner side of the corner tower is assembled and disassembled, the grounding wire 4 is arranged on the cross arm 38 of the iron tower, and the traditional wire clamp 36 cannot be assembled because the drainage wire 33 is not arranged below the cross arm 38 of the iron tower. The pull-back swing arm wire clamp 35 is transversely thrown out to a drainage wire, the wire clamp ejector rod 5 is triggered by pulling the insulating rope 32 or the grounding wire 4, the installation is realized, and the dismounting is completed by pulling the insulating rope 32 or the grounding wire 4 again during the dismounting.
(4) When the linear tower is assembled and disassembled, the traditional wire clamp 36 is used for triggering the ejector rod 5 to realize assembly by pulling the insulating rope 32 or the grounding wire 4 to impact downwards, and is used for realizing disassembly by pulling again, the wire clamp is arranged below the conducting wire by pulling the swing arm wire clamp back, the insulating rope 32 or the grounding wire 4 is pulled upwards, the ejector rod 5 is triggered to realize assembly, and the disassembly is realized by pulling again.
Claims (2)
1. The utility model provides a pull-back swing arm formula short circuit ground clamp, its constitution includes: left side splint, right side splint, pull-back swing arm, ejector pin, U type clamp plate and torsional spring, characterized by: the right side splint is additionally provided with the pull-back swing arm through a bolt II, one end of the pull-back swing arm is provided with a swing arm shaft hole and a clamping surface, the other end of the pull-back swing arm is provided with a swing arm head hole, two locking nut holes and a U-shaped pressing plate, the pull-back swing arm is a J-shaped metal component, the outer side of the pull-back swing arm is provided with an arc-shaped groove, the bolt I penetrates through the left side splint upper hole, then penetrates through a torsional spring, penetrates through a splint lower hole and screws a nut I, the bolt II penetrates through the right side splint upper hole, then penetrates through the pull-back swing arm shaft hole, penetrates through a lower hole and screws a nut II, a push rod rotating shaft I penetrates through a push rod shaft hole I, then penetrates through a push rod shaft hole III, penetrates through a push rod clamping shaft II, penetrates through a bolt III into a sleeve grounding wire joint nut hole and screws on a left side splint screw hole, presses, and screwing the locking bolt into the locking nut hole to lock the ground wire.
2. The grounding and disassembling method of the pull-back swing arm type short circuit grounding clamp of claim 1, characterized in that: the method comprises the following steps:
(1) when installing the earth connection: the grounding wire or the insulated rope wire is pulled downwards to move upwards relatively to impact the ejector rod, the ejector rod swings upwards around a rotating shaft of the ejector rod to be separated from the support, the left clamping plate and the right clamping plate rotate around the bolt under the action of the elasticity of the torsion spring to release elasticity to clamp the wire, meanwhile, the clamping surfaces of the left clamping plate and the swing arm are separated from each other, the resistance of the swing arm is pulled back to disappear, and the swing arm can rotate upwards freely;
(2) when the grounding wire is disassembled: the relative motion that upwards stimulates ground connection or insulating rope wire can be downward breaks away from the fastener, and the ready state of installing when installing the ground connection is replied, as long as will pull back the swing arm along clockwise downward swing to combine with right splint, overcome torsional spring elasticity with the hand and part left side splint and right side splint and push up the ejector pin card axle to ejector pin (5) whereabouts, the ready state work is just accomplished in the ground connection installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388566.XA CN107257040B (en) | 2017-05-27 | 2017-05-27 | Pull-back swing arm type short circuit grounding wire clamp and grounding and disassembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388566.XA CN107257040B (en) | 2017-05-27 | 2017-05-27 | Pull-back swing arm type short circuit grounding wire clamp and grounding and disassembling method |
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| Publication Number | Publication Date |
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| CN107257040A CN107257040A (en) | 2017-10-17 |
| CN107257040B true CN107257040B (en) | 2020-04-17 |
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| CN201710388566.XA Active CN107257040B (en) | 2017-05-27 | 2017-05-27 | Pull-back swing arm type short circuit grounding wire clamp and grounding and disassembling method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921330B (en) * | 2018-12-27 | 2020-12-08 | 国网浙江龙游县供电有限公司 | An insulating lap rod for intermediate potential operation |
| CN111129798B (en) * | 2019-07-08 | 2025-03-25 | 国网河南省电力公司新郑市供电公司 | Install grounding wire clamps at the copper-aluminum transition clamps of transformer and switch leads |
| CN111342393A (en) * | 2020-04-02 | 2020-06-26 | 国网浙江武义县供电有限公司 | Hookable insulating rod |
| CN113193392B (en) * | 2021-05-21 | 2024-11-08 | 临沂市众合工具制造有限公司 | A ground wire clamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201638948U (en) * | 2010-01-27 | 2010-11-17 | 山东电力集团公司淄博供电公司 | A throw-pull grounding wire for transmission lines |
| JP2013013173A (en) * | 2011-06-28 | 2013-01-17 | Chugoku Electric Power Co Inc:The | Earth cable mounting tool |
| CN204030023U (en) * | 2014-07-04 | 2014-12-17 | 国家电网公司 | Throw hanging earthing clamp |
| CN104201490B (en) * | 2014-08-01 | 2016-09-07 | 国家电网公司 | High-tension line throws hanging earthing clamp |
| CN104409890B (en) * | 2014-12-11 | 2017-01-04 | 国家电网公司 | Throw hanging earthing clamp |
| CN204257855U (en) * | 2014-12-26 | 2015-04-08 | 国网河南省电力公司检修公司 | Earth connection hangs the self-locking earth connection fixture on car |
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