Electric wire tightening device for live replacement of insulator of 220kV power transmission line

Abstract

The utility model relates to the field of power construction, in particular to an electric wire tightening device for live replacement of an insulator of a 220kV power transmission line. The device comprises a cross arm clamp, one end of the cross arm clamp is vertically connected with an iron tower cross arm through two bolt rods, the other end of the cross arm clamp is connected with an electric tightener, the lower end of the electric tightener is connected with a pull rod, and the lower end of the pull rod is provided with a suspender hook head. By adopting the electric tightener, the lifting of the insulator chain is time-saving, trouble-saving, safe and reliable, and the problems of large physical output of workers and long working time when the existing manual wire tightening operation is used are solved. The cross arm clamp is vertically connected with the iron tower cross arm through the two bolt rods, the cross arm cushion block is arranged between the cross arm clamp and the iron tower cross arm, connection is stable and reliable, and adaptability is high. The device has the advantages of being light in weight, high in strength, flexible to operate, long in service life and not prone to damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric power construction, namely a 220kV power transmission line live replacement insulator electric wire tightening device. BACKGROUND

[0002] In recent years along with the urban construction pace quickening, the urban power consumption rapid growth, the power transmission line operation life is longer and longer, the insulator breakage, aging, self -blow condition occurs from time to time. When carrying out 220kV live replacement insulator in the past, using existing tool needs tower personnel to assemble connection after manual operation screw rod to reach the purpose of the lifting or lowering of the conductor, increases a large amount of working time. Manual operation screw rod lifts the conductor, and the conductor dead weight will make the worker consume a lot of physical strength, and then causes live working safety hidden danger. There is cross arm fixture structure form single, cannot satisfy the use on different models cross arm. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a structure reasonable, uses 220kV power transmission line live replacement insulator electric wire tightening device of matter.

[0004] The technical solution of the utility model is: a 220kV power transmission line live replacement insulator electric wire tightening device, characterized by including a cross arm clamp, the cross arm clamp one end is connected with the iron tower cross arm up and down through two bolt rods, the cross arm clamp other end is connected with electric wire tightening device, the electric wire tightening device lower end is connected with pull rod, and the pull rod lower end is equipped with derrick hook.

[0005] The above scheme further includes:

[0006] The iron tower cross arm is two horizontally arranged cross beams.

[0007] The cross arm clamp and the iron tower cross arm have cross arm pad.

[0008] The utility model has the advantages of: 1, the cross arm clamp is connected with the iron tower cross arm up and down through two bolt rods, and has cross arm pad between, and the connection is stable, reliable and adaptable. 2, adopt electric wire tightening device, save time and trouble to lift insulator string, and it is safe and reliable, solves the problem of using existing manual wire tightening operation, large physical consumption of workers and long working time. 3, the pull rod is made of epoxy resin material, and the material has small density, high strength and is not easy to deform, can satisfy the tension requirement of the electric device and the conductor. 4, the device has the characteristics of light weight, high strength, flexible operation, long service life and not easy to damage. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the main body schematic diagram of the utility model.

[0010] Fig. 2 is a schematic view of an electric stringer.

[0011] Fig. 3 is a schematic view of a cross arm clamp. DETAILED DESCRIPTION

[0012] Referring to Figs. 1-3 , the component names are as follows: cross arm clamp 1, bolt rod 2, tower cross arm 3, electric stringer 4, pull rod 5, boom hook head 6, cross arm pad 7, insulator string 8, lead screw 9, cross plate 10.

[0013] Referring to Figs. 1-3 , an electric stringer for live replacement of insulators of a 220kV power transmission line comprises a cross arm clamp 1, the right end of which is connected to the upper and lower parts of a tower cross arm 3 through two bolt rods 2. The tower cross arm is a beam arranged side by side with a gap in the middle, and the two bolt rods 2 are inserted into the gap. The lower end of the bolt rod 2 is provided with a rotatable cross plate 10 which hooks onto the bottom surface of the beam (see Fig. 3 ), and the upper end is fixed through a gold ingot bolt cap. The cross arm clamp 1 and the tower cross arm 3 are provided with a cross arm pad 7, so that the cross arm clamp 1 has a fulcrum. The other end of the cross arm clamp 1 is connected to an electric stringer 4, the lower end of which is connected to a pull rod 5, and the lower end of the pull rod 5 is provided with a boom hook head 6. The main body material of the pull rod 5 is an epoxy resin material with insulation. The electric stringer 4 is composed of a motor, an output shaft, a gear, and a lead screw 9, and the motor drives the lead screw to move up and down. The electric stringer 4 is also a commercially available product. The cross arm clamp 1, the pull rod 5, and the electric stringer 4 adopt a structure of detachable bolt connection, which is convenient to install and disassemble.

[0014] Method for use: when in use, the right side of the cross arm clamp is clamped on the cross arm 1, and the left side is connected to the electric stringer 4. The lower end of the electric stringer 4 is connected to the pull rod 5, and the boom hook head 6 at the lower end of the pull rod 5 is hooked onto the horizontal conductor. The overall connection direction is perpendicular to the ground and parallel to the insulator string 8. During the process of disassembling and assembling the insulator, the electric stringer 4 can be used to drive the lead screw 9 to move up and down, so as to tighten the conductor. The conductor can be subjected to an upward force in the direction of the pull rod 5, so that the ball head of the insulator string 8 and the conductor clamp can be smoothly separated, thereby achieving the purpose of live replacement of the insulator string. The upper end of the pull rod 5 is connected to the lower end of the lead screw 9 of the electric stringer 4 through a bolt, and the electric stringer 4 is rotated clockwise and counterclockwise to drive the lead screw 9 and the pull rod 5 to tighten and loosen, thereby realizing the operation of the electric stringer 4 for live replacement of the insulator of the 220kV power transmission line. The installation process is opposite to the disassembly process. The use of the device saves the labor of the workers and improves the work efficiency.

[0015] The above examples are only used to illustrate the technical solutions of the present application and not to limit them.

Claims

1. An electric tensioning device for live-line replacement of insulators on a 220kV transmission line, characterized in that... It includes a crossarm clamp (1), one end of which is connected to the crossarm (3) of the iron tower by two bolt rods (2), the other end of which is connected to an electric tensioner (4), the lower end of which is connected to a tie rod (5), and the lower end of the tie rod (5) has a hook (6).

2. The electric tensioning device for live-line replacement of insulators on a 220kV transmission line according to claim 1, characterized in that... The crossarm of the iron tower (3) consists of two crossbeams arranged side by side at intervals.

3. An electric tensioning device for live-line replacement of insulators on a 220kV transmission line according to claim 1 or 2, characterized in that... There is a crossarm pad (7) between the crossarm card (1) and the iron tower crossarm (3).

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