CN110867808A - Double-split power transmission line suspension clamp and test method - Google Patents
Double-split power transmission line suspension clamp and test method Download PDFInfo
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- CN110867808A CN110867808A CN201911172245.1A CN201911172245A CN110867808A CN 110867808 A CN110867808 A CN 110867808A CN 201911172245 A CN201911172245 A CN 201911172245A CN 110867808 A CN110867808 A CN 110867808A
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- core rod
- suspension
- transmission line
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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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/05—Suspension arrangements or devices for electric cables or lines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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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
Abstract
The invention discloses a double-split transmission line suspension clamp and a test method, which mainly comprise a connecting plate and the like, wherein two ends of a pulling core rod A and a pulling core rod B are flatly drilled and then connected with a steel strand through U-shaped hanging rings, the steel strand is connected with the hanging rings through seamless steel tubes, the steel strand passes through a roller, the roller is installed at two ends of the connecting plate through parallel hanging plates, the pulling core rod A and the pulling core rod B are respectively connected with a product A and a product B, and a double-suspension vertical line clamp string type is connected between the product A and the product B. The test core rod is tightly attached to the middle of the contact of the suspension clamp, two ends of the test core rod extend at an angle of 12.5 degrees, and the suspension clamps with different specifications can meet the requirements of different suspension clamps by replacing the test core rod; the mechanical test requirement of the product is met; simple structure, convenient manufacture and convenient and fast use.
Description
Technical Field
The invention relates to the field of power transmission lines, in particular to a suspension clamp of a double-split power transmission line and a test method.
Background
The suspension clamp is an important component of an overhead transmission line, is mainly used for suspending wires and optical cables on an insulator string or a tower, generally comprises a hull, a rotating shaft, a pressing bar (containing fastening screws) and other components, and mainly bears vertical loads from the wires and the optical cables under normal operating conditions. If the suspension clamp has unqualified quality and can not bear the vertical load in a specified range to break, the lead can be broken, so that the circuit accidents occur, even casualties can be caused, the consequences are serious and the influence is profound. Thus, the suspension clamp is subjected to a break load test to determine whether its mechanical strength is satisfactory before it is put into use. Traditional suspension clamp load test frock only carries out load test to the fastener body, does not carry out effective survey, especially two split transmission line suspension clamps to both sides link plate and whole. Therefore, a new technical solution is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a suspension clamp for a double-split power transmission line and a test method.
The purpose of the invention is achieved by the following technical scheme: the double-split power transmission line suspension clamp mainly comprises a yoke plate, parallel hanging plates, rollers, hanging rings, a pulling force core rod A, double-suspension vertical line clamp string types, a pulling force core rod B, a product A, a product B, steel strands and seamless steel tubes, wherein the U-shaped hanging rings are connected with the steel strands after two ends of the pulling force core rod A and the pulling force core rod B are flatly drilled, the steel strands are connected with the hanging rings through the seamless steel tubes, the steel strands penetrate through the rollers, the rollers are installed at two ends of the yoke plate through the parallel hanging plates, the pulling force core rod A and the pulling force core rod B are respectively connected with the product A and the product B, and the double-suspension vertical line clamp string types are connected between the product.
The yoke plate, the parallel hanging plate and the idler wheel are connected through bolts, nuts and supporting tubes.
The tension core rod A and the tension core rod B are manufactured by 45# material through processing and quenching and tempering heat treatment.
The roller is manufactured by 45# material.
The link plate is an L-32-130/600 link plate, and the link plate is fixed with the horizontal tensile machine.
The parallel hanging plate is a P-16100 parallel hanging plate.
The connecting plate and the parallel hanging plate are both made of a material Q355, and the periphery and each hole opening are chamfered, barbed and hot-galvanized.
The suspension loop is a UK-25110 suspension loop, is processed and manufactured by material No. 35, and is subjected to normalizing heat treatment and hot galvanizing.
The steel strand is a 1X19-4.0-1570 steel strand, the length is about 1.8 meters, and the left and right steel strands are required to be identical in length.
The tension core rod A and the tension core rod B are closely attached to the middle of the double-suspension perpendicular line clip string type contact, and two ends of the tension core rod A and the tension core rod B extend at an angle of 12.5 degrees.
The double-split power transmission line suspension test method mainly comprises the following steps:
1) the upward positive tension F of the connecting plate and the downward force F1 of the parallel hanging plate under the stress condition are tested according to the force 1-2 times of the required wire;
2) the force values of N1+ N3 and N2+ N4 are required to be uniform, so that the stress of the product A is the same as that of the product B, and the mechanical loads acting on the connecting plates and the parallel hanging plates are jointly decomposed;
3) the parallel hanging plates are connected with the pulley block, when a product A and a product B are stressed, N3 and N4 are stressed by the same force, N1 and N2 are stressed by the same force, N1 and N3, and N2 and N4 are also stressed by the same force, the whole test scheme is achieved, and N1, N2, N3 and N4 jointly decompose mechanical loads acting on two ends of the tool, so that stress balance is achieved.
The invention has the beneficial effects that: the test core rod is tightly attached to the middle of the contact of the suspension clamp, two ends of the test core rod extend at an angle of 12.5 degrees, and the suspension clamps with different specifications can meet the requirements of different suspension clamps by replacing the test core rod; the mechanical test requirement of the product is met; simple structure, convenient manufacture and convenient and fast use.
Drawings
FIG. 1 is a front view of a single-connection I-type suspension string structure of a 70kN disk-shaped suspension insulator of a national standard 2XZ11-4000-07P-2A vertical double-split conductor.
FIG. 2 is a side view of a single-connection I-type suspension string structure of a 70kN disk-shaped suspension insulator of a national standard 2XZ11-4000-07P-2A vertical double-split conductor.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a schematic view of direction a in fig. 3.
Description of reference numerals: the steel wire rope tension device comprises a connecting plate 1, a parallel hanging plate 2, a roller 3, a hanging ring 4, a tension mandrel A5, a double-suspension vertical wire clip string type 6, a tension mandrel B7, a product A8, a product B9, a bolt 11, a support tube 12, a nut 13, a steel strand 14 and a seamless steel tube 15.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in the attached drawings, the double-split power transmission line suspension clamp mainly comprises a connecting plate 1, a parallel hanging plate 2, a roller 3, a hanging ring 4, a pulling force core rod A5, a double-suspension vertical line clamp string type 6, a pulling force core rod B7, a product A8, a product B9, a steel strand 14 and a seamless steel tube 15, wherein two ends of the pulling force core rod A5 and two ends of the pulling force core rod B7 are flatly drilled and then connected with the steel strand 14 through the U-shaped hanging ring 4, the steel strand 14 is connected with the hanging ring 4 through the seamless steel tube 15, and therefore the steel strand 14 is used for pulling the steel strand in a vertical load test. The steel strand 14 passes through the roller 3, and the stress at the two ends is balanced. The roller 3 is installed at two ends of the yoke plate 1 through the parallel hanging plate 2, and the yoke plate 1, the parallel hanging plate 2 and the roller 3 are connected through a bolt 11, a nut 13 and a supporting tube 12. And a tension mandrel A5 and a tension mandrel B7 are respectively connected with a product A8 and a product B9, and a double-suspension vertical wire clip string type 6 is connected between the product A8 and the product B9.
The tension core rod A5 and the tension core rod B7 are manufactured by 45# material processing and are subjected to quenching and tempering heat treatment. The roller 3 is manufactured by 45# material. The yoke plate 1 is an L-32-130/600 yoke plate, and the yoke plate 1 can be fixed with a horizontal tensile machine. The parallel hanging plate 2 is a P-16100 parallel hanging plate. The connecting plate 1 and the parallel hanging plate 2 are both made of material Q355, and the periphery and each hole opening are chamfered and pricked and hot-galvanized. The suspension loop 4 is a UK-25110 suspension loop, is processed and manufactured by material No. 35, and is subjected to normalizing heat treatment and hot galvanizing. The steel strand 14 is a 1X19-4.0-1570 steel strand, the length is about 1.8 meters, and the left and right steel strands 4 are required to be identical in length. The tension core rod A5 and the tension core rod B7 are closely attached to the middle of the contact of the double suspension vertical wire clip string 6, two ends of the tension core rod A5 and the tension core rod B7 extend at an angle of 12.5 degrees, and suspension wire clips with different specifications can meet the requirements of different suspension wire clips by replacing test core rods.
The hanging ring 4 adopts M27X100X40K bolt 6.8 grade and M27 nut 6 grade; the roller 3 is fixed on the double parallel hanging plate 2, adopts a bolt of M24X125X35K grade 6.8 and is sleeved in a phi 34X4X8 supporting tube and a nut of M24 grade 6; the parallel hanging plate 2 is fixed on the yoke plate 1 by adopting M24X125X35K bolt 6.8 grade and M24 nut 6 grade.
The double-split power transmission line suspension test method mainly comprises the following steps:
1) the upward positive tension F of the yoke plate 1 and the downward force F1 of the parallel hanging plate 2 under the stress condition are tested according to the force 1-2 times of the required wire;
2) the force values of N1+ N3 and N2+ N4 are required to be uniform, so that the stress of the product A8 is the same as that of the product B9, and the mechanical loads acting on the connecting plate 1 and the parallel hanging plate 2 are jointly decomposed;
3) the parallel hanging plate 2 is connected with a pulley block formed by rollers, when a product A8 and a product B9 are stressed, N3 and N4 are stressed by the same force, N1 and N2 are stressed by the same force, N1 and N3, and N2 and N4 are also stressed by the same force, so that the whole test scheme is achieved, and N1, N2, N3 and N4 jointly decompose mechanical loads acting on two ends of the tool, so that stress balance is achieved.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (5)
1. The utility model provides a two split transmission line suspension clamp which characterized in that: mainly comprises a yoke plate (1), parallel hanging plates (2), rollers (3), hanging rings (4), a pulling mandrel A (5), a double-suspension vertical line clip string type (6), a pulling mandrel B (7), a product A (8), a product B (9), a steel strand (14) and a seamless steel pipe (15), pulling force plug A (5) and pulling force plug B (7) both ends are clapped flat drilling back and are linked to each other with link (4) and steel strand wires (14) of U type, link (4) are connected through seamless steel pipe (15) in steel strand wires (14), gyro wheel (3) are passed in steel strand wires (14), install the both ends in yoke plate (1) through parallel link plate (2) in gyro wheel (3), connect product A (8) and product B (9) on pulling force plug A (5) and pulling force plug B (7) respectively, it presss from both sides string type (6) to connect the double perpendicular line of hanging between product A (8) and the product B (9).
2. The double split transmission line suspension clamp of claim 1, characterized in that: the yoke plate (1), the parallel hanging plate (2) and the roller (3) are connected through a bolt (11), a nut (13) and a supporting pipe (12).
3. The double split transmission line suspension clamp of claim 1, characterized in that: the left and right steel strands (4) are required to be equal in length.
4. The double split transmission line suspension clamp of claim 1, characterized in that: the tension core rod A (5) and the tension core rod B (7) are contacted with the double suspension vertical line clip string type (6) and closely attached to the middle, and the two ends extend at an angle of 12.5 degrees.
5. A double-split power transmission line suspension test method is characterized by comprising the following steps: the method mainly comprises the following steps:
1) the upward positive tension F of the yoke plate (1) and the downward force F1 of the parallel hanging plate (2) under the stress condition are tested according to the force 1-2 times of the required wire;
2) the force values of N1+ N3 and N2+ N4 are required to be uniform, so that the stress of the product A (8) is the same as that of the product B (9), and the mechanical loads acting on the connecting plate (1) and the parallel hanging plate (2) are jointly decomposed;
3) the parallel hanging plates (2) are connected with the pulley block, when a product A (8) and a product B (9) are stressed, N3 and N4 are stressed in the same way, N1 and N2 are stressed in the same way, N1 and N3, N2 and N4 are also stressed in the same way, the whole test scheme is achieved, N1, N2, N3 and N4 jointly decompose mechanical loads acting on two ends of the tool, and stress balance is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911172245.1A CN110867808A (en) | 2019-11-26 | 2019-11-26 | Double-split power transmission line suspension clamp and test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911172245.1A CN110867808A (en) | 2019-11-26 | 2019-11-26 | Double-split power transmission line suspension clamp and test method |
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| CN110867808A true CN110867808A (en) | 2020-03-06 |
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| CN201911172245.1A Pending CN110867808A (en) | 2019-11-26 | 2019-11-26 | Double-split power transmission line suspension clamp and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127902A (en) * | 2022-08-31 | 2022-09-30 | 湖南星泽电力建设有限公司 | Power wire clamp strength testing device and testing method |
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2019
- 2019-11-26 CN CN201911172245.1A patent/CN110867808A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127902A (en) * | 2022-08-31 | 2022-09-30 | 湖南星泽电力建设有限公司 | Power wire clamp strength testing device and testing method |
| CN115127902B (en) * | 2022-08-31 | 2022-11-22 | 湖南星泽电力建设有限公司 | Power wire clamp strength testing device and testing method |
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