CN107979027B - Stringing method for ground crimping strain clamp - Google Patents
Stringing method for ground crimping strain clamp Download PDFInfo
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- CN107979027B CN107979027B CN201711422896.2A CN201711422896A CN107979027B CN 107979027 B CN107979027 B CN 107979027B CN 201711422896 A CN201711422896 A CN 201711422896A CN 107979027 B CN107979027 B CN 107979027B
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- Prior art keywords
- strain clamp
- tractor
- ground
- connecting piece
- iron tower
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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
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
Abstract
The invention relates to a stringing method for ground compression joint of a strain clamp, which comprises the following steps that firstly, the A end of a lead is compressed and connected with the strain clamp at the A end on the ground; secondly, one end of a lead which is connected with an A-end strain clamp in a compression mode is pulled upwards to the A-end strain insulator string through an A-end iron tower tractor on the A-end iron tower, and the A-end ground tractor connected with the A-end strain clamp is used for paying off to match with the take-up of the A-end iron tower tractor in the process; and thirdly, connecting the A-end strain clamp to the A-end strain insulator string, and removing the connection between the A-end ground tractor, the A-end iron tower tractor and the A-end strain clamp. The invention solves the problem that the high-altitude operation time is long because the strain clamp needs to be connected in a crimping mode at high altitude in the prior art.
Description
Technical Field
The invention relates to a stringing method for crimping a strain clamp on the ground in the field of power transmission.
Background
During conventional stringing construction, generally, when tension is strung, a strain clamp cannot smoothly pass through a stringing pulley due to a drainage plate and can only break a wire at high altitude, then a lead is in compression joint with the strain clamp at high altitude, long-time high-altitude operation is needed for compression joint of the strain clamp at high altitude, the operation mode is time-consuming and labor-consuming, and particularly, when important crossing is performed, such as railway crossing, highway crossing and the like, the control of high-altitude compression joint time is more strict, and the operation mode is not suitable.
Disclosure of Invention
The invention aims to provide a wiring method for ground compression joint of strain clamps, which aims to solve the problem that the strain clamp needs to be compressed at high altitude in the prior art, so that the high-altitude operation time is long.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the stringing method of ground crimping strain clamp comprises the following steps, firstly, crimping the A end of a lead and the A end strain clamp on the ground; secondly, one end of a lead which is connected with an A-end strain clamp in a compression mode is pulled upwards to the A-end strain insulator string through an A-end iron tower tractor on the A-end iron tower, and the A-end ground tractor connected with the A-end strain clamp is used for paying off to match with the take-up of the A-end iron tower tractor in the process; and thirdly, connecting the A-end strain clamp to the A-end strain insulator string, and removing the connection between the A-end ground tractor, the A-end iron tower tractor and the A-end strain clamp.
In the first step, the A-end ground tractor pulls the A-end strain clamp through pulling the strain clamp connecting piece, the strain clamp connecting piece comprises a connecting piece body detachably connected with the A-end strain clamp, and a first connecting lug connected with a traction steel wire rope of the A-end ground tractor and a second connecting lug connected with a traction steel wire rope of the A-end iron tower tractor are arranged on the connecting piece body.
The second connecting lug is positioned on the upper side of the first connecting lug.
The first engaging lugs are arranged in pairs, and the second engaging lugs are arranged in pairs.
The connecting piece body is a split buckling structure connected together through a bolt connecting piece, and the connecting piece body is sleeved on a wire hanging nose of the A-end strain clamp.
And one side of the connecting piece body facing the A-end ground tractor is provided with an inner groove which is used for being matched with the U-shaped hanging pushing stop connected with the wire hanging nose.
The invention has the beneficial effects that: in the invention, the compression joint of the lead and the A-end strain clamp is carried out on the ground, then the A-end strain clamp is pulled to the A-end insulator string by the A-end iron tower tractor, the A-end ground tractor keeps tension when paying off, then the A-end strain clamp is connected to the A-end insulator string, the stringing construction is realized, the compression joint of the lead is completed on the ground, the ground compression joint can effectively guarantee the construction quality and reduce the compression joint construction time, and the method is very suitable for important crossing of railways, highways and the like.
Drawings
FIG. 1 is a schematic view of the state of the A-end of a conductor of the present invention after being crimped with an A-end strain clamp on the ground;
FIG. 2 is a schematic view showing a state in which an A-end strain clamp is pulled upward by an A-end pylon tractor according to the present invention;
FIG. 3 is a schematic view of the A-side strain clamp of the present invention after being connected to the A-side insulator string;
FIG. 4 is a schematic view of the state of the B-end of the lead wire of the present invention after being crimped with the B-end strain clamp on the ground;
FIG. 5 is a schematic view showing a state in which a B-end strain clamp is pulled by a B-end pylon tractor according to the present invention;
FIG. 6 is a schematic view of the B-side strain clamp of the present invention after being connected to the B-side insulator string;
FIG. 7 is a schematic view of the strain clamp connector of FIG. 1;
FIG. 8 is a left side view of FIG. 7;
FIG. 9 is a top view of FIG. 7;
FIG. 10 is a schematic view of the end A strain clamp of FIG. 1;
FIG. 11 is a top view of FIG. 10;
FIG. 12 is a schematic view of the strain clamp and U-shaped hanger of FIG. 10 in combination;
fig. 13 is a top view of fig. 12.
Detailed Description
The embodiment of the stringing method for crimping the strain clamp on the ground is shown in figures 1-13:
in order to more clearly explain the wire stringing method, a structure of a strain clamp in the prior art is first explained, and the structure of the strain clamp is shown in fig. 10 to 11, and includes a wire hanging nose 61 and a drainage plate 62 bent to one side of the wire hanging nose, and a rear end of the drainage plate 62 is a crimping section for crimping and connecting with a corresponding wire. When in use, the wire hanging nose 61 is connected to the corresponding insulator string through the U-shaped hanger 4. Meanwhile, for the purpose of explanation, it is defined that one end of the wire 8 is an a end, the other end is a B end, the iron tower corresponding to the a end of the wire is called an a end iron tower 1, the insulator string arranged on the a end iron tower 1 is called an a end insulator string 2, the iron tower tractor arranged on the a end iron tower 1 is called an a end iron tower tractor 3, the ground tractor corresponding to the a end of the wire is called an a end ground tractor 5, and the strain clamp connected to the a end of the wire is called an a end strain clamp 6. The corresponding iron tower corresponding to the end B of the lead is called an end B iron tower 11, an insulator string arranged on the end B iron tower 11 is called an end B insulator string 12, an iron tower tractor arranged on the end B iron tower 11 is called an end B iron tower tractor 13, a ground tractor corresponding to the end B of the lead is called an end B ground tractor 15, and a strain clamp connected with the end B of the lead is called an end B strain clamp 14.
The structure of the tension clamp connecting piece 7 used in the stringing method is shown in figures 7-8: including being used for with strain clamp releasable connection's connecting piece body 71, the connecting piece body is two lamella butt-buckling type structures that link together through bolted connection spare in this embodiment, two lamella connecting piece bodies are connected the releasable connection who realizes with strain clamp through the bolted connection spare of both sides, two lamella connecting piece bodies enclose into the hole 74 that supplies the adaptation of hanging wire nose 61 to pass, during the use, the connecting piece body is to detaining on the hanging wire nose 61 of strain clamp, form the cover connection structure with the hanging wire nose, it just can tear down the connecting piece body off by hanging wire nose to move back bolted connection spare, hole 74 is splayed structure in this embodiment, consequently also can not rotate relatively between connecting piece body and the hanging wire nose, the process of pulling up to strain clamp is more stable like this. The arc end of the U-shaped hanger connected with the front end of the wire hanging nose is positioned and propped against the inner groove 75 arranged on the connecting piece body, so that the U-shaped hanger is prevented from falling off in the wire stringing process. The connector body is provided with a first engaging lug 72 and a second engaging lug 73 located on the upper side of the first engaging lug. All have on each engaging lug be used for with correspond the wire rope connection structure who pulls wire rope and be connected, wire rope connection structure is the connecting hole in this embodiment, pulls wire rope and can directly link to each other with the connecting hole, also can link to each other with the connecting hole through other accessories.
The stringing method comprises the following steps of, a first step; completing the compression joint of the A-end strain clamp 6 and the A-end of the lead 8 on the ground, and performing a second step; one end of a lead which is crimped with an A-end strain clamp is upwards pulled to an A-end strain insulator string 2 through an A-end iron tower tractor 3 on an A-end iron tower 1, an A-end ground tractor 5 which is connected with the A-end strain clamp in the process releases a wire to match with a take-up wire of the A-end iron tower tractor 3, wherein a traction steel wire rope of the A-end ground tractor is connected with a first connecting lug 72 of the strain clamp connecting piece which is connected with the A-end strain clamp, the traction steel wire rope of the A-end iron tower tractor is connected with a second connecting lug 73 of the strain clamp connecting piece which is connected with the A-end strain clamp, and in the second step, the U-shaped cable is connected to a hanging arm of the A-end strain clamp in a hanging manner, so that the A-end strain insulator string can; and thirdly, connecting the A-end strain clamp 6 to the A-end strain insulator string 2, removing the connection between the A-end ground tractor and the A-end iron tower tractor and the A-end strain clamp, and removing a strain clamp connecting piece. The iron tower tractor and the ground tractor can be manual tractors, such as a hand plate hoist, or electric tractors, such as an electric hoist, a winding drum with a motor and the like.
If the operation of the B end of the lead is needed, after the third step, the B end cut-off position of the lead is measured and calculated through a total station (or a laser radar), then the B end of the lead is marked to be cut off, then the compression joint of the B end strain clamp and the lead is completed on the ground, similarly to the process, one end of the lead with the B end strain clamp 14 in a compression joint mode is pulled upwards to the B end strain insulator string 12 through a B end iron tower tractor 13 on a B end iron tower 11, a B end ground tractor 15 connected with the B end strain clamp is paid out to match with the take-up of the B end iron tower tractor 13 in the process, then the B end strain clamp 14 is connected to the B end strain insulator string 12, the connection of the B end ground tractor and the B end strain clamp is dismantled, and the strain clamp connecting piece connected with the B end strain clamp is dismantled. Item 10 in the figure represents a C-tower between an a-end iron tower and a B-end iron tower; item 9 represents a line passing tackle arranged on the C iron tower; item 74 represents the inner bore of the connector body, which is enclosed by the respective lobe connector body, through which the wire lug fits.
In other embodiments of the invention: in the scheme, in order to shorten the stringing construction time and facilitate the operation during important crossing, the length of the lead can be calculated in advance if the railway is positioned between an A-end iron tower and a B-end iron tower, the B end of the lead is connected with a B-end strain insulator string by a conventional method, and then the A end of the lead is connected with the A-end strain insulator string by the stringing method; the U-shaped hanger can be hung on the wire hanging nose without being hung in advance, for example, when the last strain clamp is connected with the corresponding strain insulator string, the U-shaped hanger is hung; the tension clamp connecting piece is not needed, and the corresponding traction steel wire rope is directly connected to the tension clamp, for example, the traction steel wire rope can be connected with the tension clamp by penetrating through a nostril on a wire hanging nose; the number of the first connecting lugs can be two, three or more, and each first connecting lug is arranged at intervals along the axial direction of the A-end ground tractor; the number of the second connecting lugs can also be two, three or more, and the second connecting lugs are arranged at intervals along the axial direction of the A-end iron tower tractor.
Claims (5)
1. The stringing method of the ground crimping strain clamp is characterized in that: the stringing method comprises the following steps that firstly, the end A of a lead is connected with a strain clamp at the end A in a crimping mode on the ground; secondly, one end of a lead which is connected with an A-end strain clamp in a compression mode is pulled upwards to the A-end strain insulator string through an A-end iron tower tractor on the A-end iron tower, and the A-end ground tractor connected with the A-end strain clamp is used for paying off to match with the take-up of the A-end iron tower tractor in the process; and thirdly, connecting an A-end strain clamp to the A-end strain insulator string, and dismantling the connection between an A-end ground tractor, an A-end iron tower tractor and the A-end strain clamp, wherein in the first step, the A-end ground tractor pulls the A-end strain clamp through a pull strain clamp connecting piece, the strain clamp connecting piece comprises a connecting piece body detachably connected with the A-end strain clamp, a first connecting lug connected with a pull steel wire rope of the A-end ground tractor and a second connecting lug connected with a pull steel wire rope of the A-end iron tower tractor are arranged on the connecting piece body, the connecting piece body is a split buckling structure connected together through a bolt connecting piece, and each split connecting piece body encloses an inner hole for enabling a wire hanging nose of the A-end strain clamp to be matched and passed through.
2. The stringing method as claimed in claim 1, wherein: the second connecting lug is positioned on the upper side of the first connecting lug.
3. The stringing method as claimed in claim 2, wherein: the first engaging lugs are arranged in pairs, and the second engaging lugs are arranged in pairs.
4. The stringing method as claimed in claim 1, wherein: and one side of the connecting piece body facing the A-end ground tractor is provided with an inner groove which is used for being matched with the U-shaped hanging pushing stop connected with the wire hanging nose.
5. The stringing method as claimed in claim 1, wherein: the inner hole of the connecting piece body is of an 8-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711422896.2A CN107979027B (en) | 2017-12-25 | 2017-12-25 | Stringing method for ground crimping strain clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711422896.2A CN107979027B (en) | 2017-12-25 | 2017-12-25 | Stringing method for ground crimping strain clamp |
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| Publication Number | Publication Date |
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| CN107979027A CN107979027A (en) | 2018-05-01 |
| CN107979027B true CN107979027B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711422896.2A Active CN107979027B (en) | 2017-12-25 | 2017-12-25 | Stringing method for ground crimping strain clamp |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3256774B2 (en) * | 1995-12-20 | 2002-02-12 | 日本カタン株式会社 | Tensioning method for overhead power transmission lines, tension insulator device for multiconductor and bolt type tension clamp used in this tensioning method |
| CN2370598Y (en) * | 1999-02-12 | 2000-03-22 | 高正贤 | Conic tension-proof wire clip |
| CN101436764B (en) * | 2008-11-13 | 2011-11-09 | 江苏省电力公司宜兴市供电公司 | Crossover stringing method for overhead line and stringing sheave pulley |
| CN101459321B (en) * | 2008-12-31 | 2011-08-31 | 程永忠 | Long distance bundling paying-out method and apparatus for slope tower over hanging power transmission line |
| CN101859988B (en) * | 2010-03-12 | 2013-01-09 | 湖北省输变电工程公司 | Assembly type overhead construction process |
| CN102447242B (en) * | 2011-11-23 | 2014-07-16 | 绍兴电力局 | Combined structure of suspension insulator string and strain clamp and construction method thereof |
| CN102723679A (en) * | 2012-06-15 | 2012-10-10 | 绍兴电力局 | Continuous strain section assembly type wiring method for ultrahigh-strength aluminum conductor steel supported wires |
| CN103401183B (en) * | 2013-07-25 | 2015-12-02 | 国家电网公司 | A kind of assembly type overhead method |
| CN103594977B (en) * | 2013-12-04 | 2016-08-17 | 国家电网公司 | A kind of soft bus sets up mounting process |
| CN204615332U (en) * | 2015-05-29 | 2015-09-02 | 永固集团股份有限公司 | Bearing type insulating tension clamp |
| CN107465144B (en) * | 2017-09-01 | 2023-04-28 | 河南送变电建设有限公司 | Paying-off pulley device for strain clamp |
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2017
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