CN211239250U - Suspension clamp for double-split power transmission line - Google Patents

Abstract

The utility model discloses a suspension clamp for double-split transmission lines, which mainly includes connecting plates, etc. The ends of a tension mandrel A and a tension mandrel B are flattened and drilled, and then connected with steel strands by U-shaped hanging rings. The strand is connected to the hanging ring through a seamless steel pipe, the steel strand is passed through the roller, and the roller is installed at both ends of the connecting plate through the parallel hanging plate. Connect the double-suspension clamp string type with product B. The test mandrel of the utility model is in close contact with the suspension clamp in the middle, and the two ends extend at an angle of 12.5°, and the suspension clamps of different specifications can meet the requirements of different suspension clamps by replacing the test mandrel; Test requirements; simple structure, convenient manufacture, convenient and fast use.

Description

A double-split transmission line suspension clamp

technical field

The utility model relates to the field of transmission lines, in particular to a suspension clamp for double-split transmission lines.

Background technique

Suspension clips are an important part of overhead transmission lines, mainly used to suspend conductors and optical cables on insulator strings or towers, generally including hulls, rotating shafts and beading (including fastening screws) and other components, which are mainly used under normal operating conditions. Withstand vertical loads from wires and optical cables. If the quality of the suspension clip is unqualified and cannot withstand the vertical load within the specified range and breaks, it will cause the wire to open, resulting in an accident in the circuit, and may even cause casualties. The consequences are serious and far-reaching. Therefore, before the suspension clamp is put into use, it will be subjected to a failure load test to determine whether its mechanical strength meets the requirements. The traditional suspension clamp load test tool only performs load test on the clamp body, and does not effectively measure the hanging plates on both sides and the whole, especially the suspension clamp for double-split transmission lines. Therefore, a new technical solution is needed to solve it.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a suspension clamp for double-split transmission lines.

The purpose of the utility model is accomplished through the following technical solutions: this double-split transmission line suspension clamp mainly includes a connecting plate, a parallel hanging plate, a roller, a hanging ring, a tension mandrel A, a double-suspension clamp series, Tension mandrel B, product A, product B, steel strand, seamless steel pipe, both ends of tension mandrel A and tension mandrel B are flattened and drilled, and then connected to the steel strand with a U-shaped hanging ring. The hanging ring is connected by a seamless steel pipe, the steel strand is passed through the roller, and the roller is installed on both ends of the connecting plate through the parallel hanging plate. Connect the double suspension clamp string type between B.

The connecting plates, the parallel hanging plates and the rollers are connected by bolts, nuts and support pipes.

The tensile mandrel A and the tensile mandrel B are made of material 45# and undergo quenching and tempering heat treatment.

The roller is made of material 45#.

The connecting plate is L-32-130/600 connecting plate, and the connecting plate is fixed with the horizontal tension machine.

The parallel hanging board is P-16100 parallel hanging board.

The connecting plate and the parallel hanging plate are all made of Q355 material, the periphery and each opening are chamfered and thorned and hot-dip galvanized.

The hanging ring is a UK-25110 hanging ring, which is made of 35# material, normalized, heat-treated and hot-dip galvanized.

The steel strand is a 1X19-4.0-1570 steel strand with a length of about 1.8 meters, and the left and right steel strands are required to be the same length.

The tension mandrel A and the tension mandrel B are in close contact with the double-suspension wire clip string contact, and the two ends extend at an angle of 12.5°.

This double-split transmission line suspension test method mainly includes the following contents:

1) The positive pulling force F of the connecting plate upward, the downward force F1 of the parallel hanging plate under stress, the test shall be carried out according to the force 1 to 2 times of the required wire;

2) The force values of N1+N3 and N2+N4 are required to be uniform, so that the forces of product A and product B are the same, and the mechanical load acting on the connecting plate and parallel hanging plate is decomposed together;

3) Parallel hanging plates are connected to the pulley block. When product A and product B are subjected to force, N3 and N4 are subjected to the same force, N1 and N2 are subjected to the same force, and N1 and N3, N2 and N4 are also affected by the same force, and the entire test plan is achieved. N1, N2, N3, and N4 jointly decompose the mechanical load acting on both ends of the tooling to achieve a balanced force.

The beneficial effects of the utility model are as follows: the test mandrel of the utility model is in close contact with the suspension clamp in the middle, and the two ends extend at an angle of 12.5°. The suspension clamps of different specifications can be replaced by the test mandrel to meet different suspension clamps. meet the requirements of the mechanical test of the product; the structure is simple, the manufacture is convenient, and the use is convenient and fast.

Description of drawings

Figure 1 is a front view of the structure of a single I-type suspension string of a 70kN disc suspension insulator with a vertical double split conductor of the national standard 2XZ11-4000-07P-2A.

Figure 2 is a side view of a 70kN disc-shaped suspension insulator single-linked I-type suspension string structure with a vertical double-split conductor of the national standard 2XZ11-4000-07P-2A.

FIG. 3 is a schematic structural diagram of the utility model.

FIG. 4 is a schematic diagram of the direction A in FIG. 3 .

Description of reference numerals: connecting plate 1, parallel hanging plate 2, roller 3, hanging ring 4, tension mandrel A5, double-suspension wire clip string type 6, tension mandrel B7, product A8, product B9, bolt 11, support tube 12. Nut 13, steel strand 14, seamless steel pipe 15.

Detailed ways

The present utility model will be described in detail below in conjunction with the accompanying drawings:

Example: As shown in the attached drawings, this double-split transmission line suspension clamp mainly includes a connecting plate 1, a parallel hanging plate 2, a roller 3, a hanging ring 4, a tension mandrel A5, a double suspension clamp string type 6, Tension mandrel B7, product A8, product B9, steel strand 14, seamless steel pipe 15, both ends of tension mandrel A5 and tension mandrel B7 are flattened and drilled, and then connected with U-shaped hanging ring 4 and steel strand 14 , the steel strand 14 is connected to the hanging ring 4 through the seamless steel pipe 15, so that the steel strand 14 is pulled in a vertical load test during the test. The steel strand 14 passes through the roller 3 to ensure that the two ends receive a balanced force. The rollers 3 are installed on both ends of the connecting plate 1 through the parallel hanging plates 2 , and the connecting plates 1 , the parallel hanging plates 2 and the rollers 3 are connected by bolts 11 , nuts 13 and support pipes 12 . The tension mandrel A5 and the tension mandrel B7 are respectively connected with the product A8 and the product B9, and the double-suspension wire clip string type 6 is connected between the product A8 and the product B9.

Tensile mandrel A5 and tensile mandrel B7 are made of material 45# and undergo quenching and tempering heat treatment. Roller 3 is made of material 45#. The connecting plate 1 is L-32-130/600 connecting plate, and the connecting plate 1 can be fixed with the horizontal tension machine. Parallel hanging plate 2 is P-16100 parallel hanging plate. Both the connecting plate 1 and the parallel hanging plate 2 are made of material Q355, the periphery and each opening are chamfered and thorned and hot-dip galvanized. The hanging ring 4 is a UK-25110 hanging ring, which is made of material 35# and is normalized and hot-dip galvanized. The steel strand 14 is a 1X19-4.0-1570 steel strand with a length of about 1.8 meters, and the two left and right steel strands 4 are required to be of the same length. The tension mandrel A5, the tension mandrel B7 and the double suspension clamp series 6 are in close contact with the middle, and the two ends extend at an angle of 12.5°. The suspension clamps of different specifications can meet the requirements of different suspension clamps by replacing the test mandrel. Require.

The connection of hanging ring 4 adopts M27X100X40K bolt grade 6.8 and M27 nut grade 6; the roller 3 is fixed on the double parallel hanging plate 2 with M24X125X35K bolt grade 6.8 and is inserted into φ34X4X8 support tube and M24 nut grade 6; the parallel hanging plate 2 is fixed on the connecting plate 1 uses M24X125X35K bolts of grade 6.8 and M24 nuts of grade 6.

This double-split transmission line suspension test method mainly includes the following contents:

1) The upward positive tension F of the connecting plate 1, the downward force F1 of the parallel hanging plate 2 under the stress, the test shall be carried out according to the force 1 to 2 times of the required wire;

2) It is required that the force values of N1+N3 and N2+N4 are uniform, so that the force of product A8 and product B9 is the same, and the mechanical load acting on the connecting plate 1 and the parallel hanging plate 2 is decomposed together;

3) The parallel hanging plate 2 is connected to the pulley set composed of rollers. When product A8 and product B9 are stressed, N3 and N4 are subjected to the same force, N1 and N2 are subjected to the same force, N1 and N3, N2 and N4 are also the same force, the whole test The plan is achieved, N1, N2, N3, N4 jointly decompose the mechanical load acting on both ends of the tooling, and achieve a balanced force.

It can be understood that, for those skilled in the art, equivalent replacements or changes to the technical solutions and concept of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims (4)

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 (14) 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.

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