CN102761077B - Insulating hoisting bracket for strain insulator string of 1000kV extra-high alternating current line - Google Patents

Abstract

The invention discloses a 1000kV ultra-high voltage AC line tension insulator series insulation lifting bracket, which includes a triangular bracket composed of a column, a diagonal brace and a cross brace. The first end of the column is hinged to the first end of the diagonal brace. The second end of the upright column is hinged with the first end of the cross brace, the second end of the cross brace is hinged with the second end of the diagonal brace, and the second end of the upright column and the second end of the cross brace are both connected with fixing fixtures , the column is also provided with a triangular cantilever rotating lifting bracket. The present invention can effectively fix two strings of parallel tension insulator strings by arranging the fixing fixture on the triangular bracket composed of upright columns, diagonal braces and cross braces, and then rotate the lifting bracket through the triangular cantilever, and use the lifting equipment to lift the two strings Parallel tension insulator strings are hoisted to the construction position, which has a simple structure, is easy to implement, improves work efficiency, reduces the work intensity of workers working at heights, and facilitates lifting and installation of tension insulator strings for workers working at heights.

Description

1000kV UHV AC Line Tension Insulator String Insulation Lifting Bracket

technical field

The invention relates to a hoisting bracket, in particular to a 1000kV UHV AC line tension string insulation hoisting bracket.

Background technique

UHV transmission lines refer to lines that use a voltage level of 1000kV and above to transmit electric energy. UHV power transmission is developed on the basis of EHV power transmission. Its purpose is to continue to improve power transmission capacity, realize high-power medium and long-distance power transmission, and realize long-distance power system interconnection to build a combined power system. Therefore, live replacement of tension insulators on UHV lines is an important item in live work. The traditional method of live replacement of tension insulators mainly clamps the single piece of tension insulators through insulator closed clamps, and then uses the insulation transfer rope to transfer the insulators. In actual work, the weight of the insulator closed fixture is about 35 kg, the weight of a single piece of tension insulator is about 23.5 kg, and the horizontal distance between strings of tension insulators is about 250 mm, which is less than the structural height and Disc diameter, single piece of tension insulator cannot be extracted from the middle of the insulator string. When replacing tension insulators on UHV transmission lines, due to the heavy weight of insulators and the small spacing between insulator strings, live workers cannot use the traditional method of replacing tension insulators while live. At present, there is no replacement tool suitable for strain insulator strings of 1000kV UHV AC lines.

Contents of the invention

The purpose of the present invention is to provide a 1000kV UHV AC line tension insulator string insulation lifting bracket, which can facilitate the lifting and installation of the tension insulator string by workers working at heights.

The present invention adopts following technical scheme:

A 1000kV UHV AC line tension insulator string insulation lifting bracket, including a triangular bracket composed of uprights, diagonal braces and cross braces, the first end of the uprights is hinged to the first end of the diagonal braces, the second of the uprights The end is hinged with the first end of the cross brace, the second end of the cross brace is hinged with the second end of the diagonal brace, and the second end of the column and the second end of the cross brace are connected with a fixing fixture. The column is also provided with a triangular cantilever rotating lifting bracket.

The triangular cantilever rotating lifting bracket includes a hanger brace and a hanger brace, the first end of the hanger brace is rotatably connected to the first end of the column, and the second end of the hanger brace is connected to the hanger brace. The first end is hinged, the second end of the hanger brace is rotatably connected to the column, and the second end of the hanger cross brace is provided with a lifting hole.

The second end of the cross brace is provided with a length adjusting device.

The length adjusting device adopts a length adjusting screw.

The fixing fixture includes a hard fixture, and an adjustable steel wire soft rope is arranged below the hard fixture.

The column, the diagonal brace, the cross brace, the hanger cross brace and the hanger diagonal brace all adopt insulating rods.

The present invention can effectively fix two strings of parallel tension insulator strings by arranging the fixing fixture on the triangular bracket composed of upright columns, diagonal braces and cross braces, and then rotate the lifting bracket through the triangular cantilever, and use the lifting equipment to lift the two strings Parallel tension insulator strings are hoisted to the construction position. The structure is simple and easy to implement, which greatly improves work efficiency, reduces the work intensity of workers working at heights, and facilitates the lifting and installation of tension insulator strings for workers working at heights.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a left side view of Fig. 1 .

Detailed ways

As shown in Fig. 1 and Fig. 2, the present invention comprises the triangular bracket that is made up of column 1, diagonal brace 2 and cross brace 3, and the first end of column 1 is hinged with the first end of diagonal brace 2, and the first end of column 1 The second end is hinged to the first end of the cross brace 3, the second end of the cross brace 3 is hinged to the second end of the diagonal brace 2, and the second end of the column 1 is connected to the second end of the cross brace 3. Fixed fixture is arranged, and fixed fixture comprises hard fixture 4, and the bottom of hard fixture 4 is provided with adjustable steel wire soft rope 5. The second end of the cross brace 3 is provided with a length adjusting device 9, and the length adjusting device 9 adopts a length adjusting screw. The column 1 is also provided with a triangular cantilever rotating lifting bracket, the triangular cantilever rotating lifting bracket includes a hanger cross brace 6 and a hanger diagonal brace 7, the first end of the hanger cross brace 6 is rotatably connected with the first end of the column 1, and the hanging The second end of the hanger brace 6 is hinged with the first end of the hanger brace 7, the second end of the hanger brace 7 is rotatably connected with the column 1, and the second end of the hanger brace 6 is provided with a lifting hole 8 .

When the present invention is in use, the steel caps of the two strings of parallel tension insulators are first fixed by a fixing fixture, and then the hook of the lifting device is hooked in the lifting hole 8 of the triangular cantilever rotating lifting bracket, and the two strings of parallel strain insulators are lifted by the lifting device. The insulators are hoisted in series to the construction site. Since the triangular cantilever rotating lifting bracket can rotate around the column 1, it is convenient for high-altitude workers to install and fix it during high-altitude construction. Since the fixed fixture adopts the combination of the hard fixture 4 and the adjustable steel wire soft rope 5, it can effectively solve the problems of processing error of the steel cap of the tension insulator and the universality of the strain insulator model, and has good versatility. The triangular support formed by the column 1, the diagonal brace 2 and the cross brace 3 increases the stability of the present invention, avoids potential safety hazards during use, and prevents safety accidents. In this embodiment, the upright column 1 , the diagonal brace 2 , the cross brace 3 , the hanger cross brace 6 and the hanger brace 7 are all made of insulating rods.

Claims (6)

1. a 1000kV extra-high voltage AC circuit strain insulator string insulation hoisting bracket, it is characterized in that: comprise the triangular supports be made up of column, hound and singletree, the first end of column and the first end of hound hinged, second end of column and the first end of singletree hinged, second end of singletree and the second end of hound hinged, second end of column and the second end of singletree are all connected with stationary fixture, described column are also provided with triangle cantilever-rotating hoisting bracket.

2. 1000kV extra-high voltage AC circuit strain insulator string insulation hoisting bracket according to claim 1, it is characterized in that: described triangle cantilever-rotating hoisting bracket comprises suspension bracket stull and suspension bracket diagonal brace, the first end of suspension bracket stull and the first end of column are rotationally connected, second end of suspension bracket stull and the first end of suspension bracket diagonal brace hinged, second end of suspension bracket diagonal brace and column are rotationally connected, and the second end of suspension bracket stull is provided with lifting eye.

3. 1000kV extra-high voltage AC circuit strain insulator string insulation hoisting bracket according to claim 1 and 2, is characterized in that: the second end of described singletree is provided with length adjustment device.

4. 1000kV extra-high voltage AC circuit strain insulator string insulation hoisting bracket according to claim 3, is characterized in that: described length adjustment device adopts length adjustment screw.

5. 1000kV extra-high voltage AC circuit strain insulator string insulation hoisting bracket according to claim 4, it is characterized in that: described stationary fixture comprises hard fixture, the below of hard fixture is provided with adjustable steel wire flexible lines.

6. 1000kV extra-high voltage AC circuit strain insulator string insulation hoisting bracket according to claim 5, is characterized in that: described column, hound, singletree, suspension bracket stull and suspension bracket diagonal brace all adopt insulating bar.