CN201323409Y

CN201323409Y - Tool for live line replacing of high voltage transmission line V-shaped insulator chain

Info

Publication number: CN201323409Y
Application number: CNU2008202156476U
Authority: CN
Inventors: 邢军; 张云飞; 童维占
Original assignee: Xuzhou Power Supply Co of Jiangsu Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Xuzhou Power Supply Co of Jiangsu Electric Power Co Ltd
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-10-07
Anticipated expiration: 2018-11-07

Abstract

The utility model relates to a tool for the live line replacing of a high voltage transmission line V-shaped insulator chain, which belongs to the field of electrical equipment. The tool comprises a lead screw, insulator cradles, an insulating pull rod, an insulating folding ladder, a fixture for fixing an upper cross arm and a four-line concentrator for hanging cables. By adopting the tool, vertical lifting can be performed through two lifting joints, the earth potential electrician working is convenient, the cross arm of an iron tower is not required to be reinforced, the two insulator cradles are simultaneously retracted, thereby, the whole V-shaped insulator chain is fixed, and sockets are conveniently obtained to ensure the insulator chain to drop out. The difficulties that no fixed point exists when single lifting joint is used and the compact tower can not be slung along the V direction are solved.

Description

The instrument of charged for replacement ultra-high-tension power transmission line V-type insulator string

Technical field

The utility model relates to a kind of instrument of charged for replacement ultra-high-tension power transmission line V-type insulator string, belongs to the electric equipment field.

Background technology

Along with the high speed development of electrical network, plough, reduce line channel for saving, adopt the compact iron tower of " V " insulator string to come into operation.The lead of ultra-high-tension power transmission line is suspended on the electric power line pole tower by " V " type insulator string.Insulator string is formed by multi-disc dish-type insulator head (bulb) tail (the steel cap of dribbling nest) serial connection, and insulator string has very high electric and mechanical strength, has guaranteed the reliability service of transmission line.Owing to reasons such as thunderbolt, pollution flashover, deteriorations, need change at any time in the running; Owing to the variation of environment, the insulator string creep distance can not meet the demands simultaneously, also needs to change.For not because of changing insulator with line outage, just need on ultra-high-tension power transmission line, carry out live line working, directly contact high-voltage conducting wires or carry out operation by the workman by means of insulating tool, bunch of insulator is changed.Change bunch of insulator at present and use a kind of intermediate insulation, two has the special mould clamp of tightening device, purpose is that wire tension is transferred on the lifting tool, makes insulator string become relaxed state from tension (because of some tons weight of suspension lead makes insulator string be in tensioned state).Because compact iron tower electrical distance is little, use conductor cross-section 630 mm sqs, (being LGJ-630) is big, and the circuit vertical load is big, no Heave Here, lead hanging point top, the tools for live working that uses can't be finished at present, does not still have at present effective replacing instrument is arranged.

Summary of the invention

The purpose of this utility model provides a kind of instrument of charged for replacement ultra-high-tension power transmission line V-type insulator string, can be under charged situation the replacing suspension insulator of safe ready.

Task of the present utility model is achieved by the following scheme: a kind of instrument of charged for replacement ultra-high-tension power transmission line V-type insulator string, comprise leading screw, bottle supporting frame, insulation pull-rod, insulation folding ladder, it is characterized in that also comprising the fixing holding clamp that cross-arm is used of going up, hang four line devices of cable; Described four line devices are made up of isosceles triangle plate body and the hook that is movably connected in isosceles triangle plate body both sides; Two angles, the bottom surface of isosceles triangle plate body are be bent upwards hook-shaped, and its drift angle has projection upwards, and projection is provided with the screw that is used to connect; Described holding clamp is the stairstepping piece, and the fluted bayonet socket of an end in the lower surface has installing hole at the other end of stairstepping piece.

The utility model has the advantages that: simple in structure, easy to use.Use the utility model vertically to lift by crane by two suspension centres, earth potential electrician operation makes things convenient for, does not need the reinforcement of iron tower cross-arm, and whole V-type string has been fixed in the folding and unfolding simultaneously of double bracket bottle stand, conveniently wins a bowl head, and insulator string is come off.Solve single suspension centre do not have the lifting fixing point a difficult problem and compact tower can not be along the difficult problem of V direction starting point.

Description of drawings

Fig. 1 is the whole layout plan that uses of instrument of the present utility model;

Fig. 2 is four line device structural representations;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the front view of jig;

Fig. 5 is the vertical view of jig.

Among the figure: 1, leading screw, 2, holding clamp, 2-1, groove bayonet socket, 2-2, installing hole, 3, insulation pull-rod, 4, four line devices, 4-1, isosceles triangle plate body, 4-2, hook, 4-3, screw, 5, the bottle supporting frame, 6, the insulation pull rope, 7, insulation folding ladder, 8, cross-arm.

Embodiment

The included instrument of the utility model has leading screw 1 as shown in Figure 1, fixing goes up the holding clamp 2 that cross-arm is used, and insulation pull-rod 3 is hung four line devices 4 of cable, bottle supporting frame 5, insulation folding ladder 7.Insulation pull-rod 3 connects by the top of bolt and four line devices 4.Insulation folding ladder 7 one ends are fixed on the cross-arm 8, and the other end hangs on the lead by the hook of front end; Holding clamp 2 is stuck on the angle steel of cross-arm 8; Draw bottle supporting frame 5 usefulness insulation pull rope 6 to hang on the cross-arm and hold insulator string.

As shown in Figures 2 and 3, four line devices are made up of isosceles triangle plate body 4-1 and the hook 4-2 that is movably connected in isosceles triangle plate body both sides; Two angles, the bottom surface of isosceles triangle plate body 4-1 are be bent upwards hook-shaped, and its drift angle has projection upwards, and projection is provided with the screw 4-3 that is used to connect and is used for being connected with insulation pull-rod 3 with the bolt cooperation.

As shown in Figure 4 and Figure 5, described holding clamp 2 is the stairstepping piece, at the fluted bayonet socket 2-1 of an end of lower surface, at the porose 2-2 of the other end of stairstepping piece.

The concrete method of operation of using is: at first, the operating personnel is stuck in holding clamp on the angle steel of cross-arm 8 by the groove bayonet socket 2-1 of jig on the tower, and installs leading screw 1 at the installing hole 2-2 place of holding clamp; To work the insulation pull-rod 3 that hangs up subsequently and four line devices 4 connect by screw.Equipotential electrician enters electric field along insulation folding ladder 7; Equipotential electrician and earth potential electrician cooperatively interact, and install bottle supporting frame 5; The earth potential electrician begins to lift by crane leading screw 1, stops lifting after lifting puts in place, and the ground staff draws bottle supporting frame 5 by insulation pull rope 6 subsequently, makes insulator string lower end hanging point loose, and equipotential personnel extract the hanging point screw, begin to change insulator.

Claims

1, a kind of instrument of charged for replacement ultra-high-tension power transmission line V-type insulator string, comprise leading screw (1), bottle supporting frame (5), insulation pull-rod (3), insulation folding ladder (7), it is characterized in that also comprising the fixing holding clamp (2) that cross-arm is used of going up, hang four line devices (4) of cable; Described four line devices are made up of isosceles triangle plate body (4-1) and the hook (4-2) that is movably connected in isosceles triangle plate body both sides; Two angles, the bottom surface of isosceles triangle plate body (4-1) are be bent upwards hook-shaped, and its drift angle has projection upwards, and projection is provided with the screw (4-3) that is used to connect; Described holding clamp 2 is the stairstepping piece, and the fluted card of an end (2-1) in the lower surface has installing hole (2-2) at the other end of stairstepping piece.