CN103457199A

CN103457199A - Cross arm safety suspension wire ladder

Info

Publication number: CN103457199A
Application number: CN2012101911332A
Authority: CN
Inventors: 马兴誉; 张念军; 黄宗泽; 冀颖; 张淼; 刘峰
Original assignee: State Grid Corp of China SGCC; Taiyuan Power Supply Co of Shanxi Electric Power Co
Current assignee: State Grid Corp of China SGCC; Taiyuan Power Supply Co of Shanxi Electric Power Co
Priority date: 2012-06-02
Filing date: 2012-06-02
Publication date: 2013-12-18

Abstract

The invention relates to a cross arm safety suspension wire ladder and belongs to the technical field of power transmission and distribution engineering. A ladder body is provided with a U-shaped hanging ring which is hung on a leading wire cross arm through a hand-pulling reversed chain and is provided with a safety rope in a tying mode. A wire hanging hook is arranged below and can hang a leading wire. When a worker maintains a line on line, the worker can go between the cross arm and the leading wire by crossing an insulator and does not tread the insulator or climb the insulator, line maintaining is safe and efficient, labor intensity is low, and the insulator cannot be stained. The cross arm safety suspension wire ladder is used for power transmission line maintaining.

Description

Cross-arm insurance messenger wire ladder

The technical field power transmission and distribution project.

During background technology transmission line interruption maintenance, the workman need to be along lower wire on insulator string.Existing method is to climb up along free-hand the assigning of insulator string.This way: the one, labour intensity is large; The 2nd, the potential hazard of trick slippage is arranged; The 3rd, prevent the contamination insulator surface, encourage flashover and form.Upper lower wire needs the utensil of the two safety of a kind of personage.

Summary of the invention cross-arm insurance messenger wire ladder is a kind of light ladder be hung between cross-arm and wire, can make the people cross easily and safely insulator string, between cross-arm and wire, comes and goes.

Cross-arm insurance messenger wire ladder (Fig. 1) is comprised of safety rope 1, U-shaped link 2, terraced body 4, line hanging hook 6.The pin nail 5 that ladder body 4 has left and right alternately to be fixedly mounted with.Ladder is first by bolt 3 hinge dress U-shaped links 2.The ladder tail is fixedly mounted with line hanging hook 6 by two bolts 3.Line hanging hook 6 hangs wire 7.The first ladder of ladder has been fastened safety rope 1 with it.

During the maintenance circuit, the workman takes the lifting rope hand tool and first goes up on tower, toggles rear safety belt.Hand is climbed pin and is moved, and arches one's back and crawls, to wire cross-arm 8, to toggle front safety belt.Lifting rope is hung on the ground wire cross-arm and toggles.Then the hand of ground assembling is pulled down to chain 9 messenger wire ladder combinations, the drop in beam node that winches to insulator string 10 on wire cross-arm 8 is firmly linked with.The messenger wire ladder is reversed in the lifting push-and-pull, makes line hanging hook 6 tangle the wire 7 of 10 times companies of insulator string.Operation jack 9, make the messenger wire ladder sling wire 7.The workman can following be overhauled to wire 7 along the messenger wire ladder, complete after more suitable messenger wire ladder climb up cross-arm 8; Also can stand on the messenger wire ladder and change insulator.Overhaul completely, knock off by the reverse order of above-mentioned operation.

The advantage of cross-arm insurance messenger wire ladder is: 1, workman's lower wire on the messenger wire ladder, and hand is held, and pedal is steady, safe and reliable; 2, do not climb, labour intensity is low; 3, easy for going up and down, work efficiency is high; 4, contamination insulator not.

Description of drawings 1 is shown cross-arm insurance messenger wire ladder structure messenger wire operation schematic diagram; Fig. 2 shows the line hanging hook structural representation; Fig. 3 shows and leads the hook structure schematic diagram.

Embodiment ladder body 4 band steels are made, and above have pin to follow closely 5 installing holes, and arrange between two parties in all holes, pitch-row 450mm.First the first pin nail 5 of ladder is near bolt 3.The ladder tail is fixedly mounted with two holes of line hanging hook near terraced caudal leg nail 5.The high overall length for the insulator string 10 that will pass of ladder and the length that suspension clamp 11 length sums deduct line hanging hook 6, then deduct half meter.Pin nail 5 is selected M16x180 steel tower pin nail, and termination is welded with the anti-pin sideslip of back-up ring that Φ 6mm round steel curves ring-type.U-shaped link 2, according to thread hook 6 wire that hangs 7 weight, tower body 4 weight and contained workman's body weight sum, is drunk choosing in the electric armour clamp product.

Line hanging hook 6 (Fig. 2) has the two-wire hook A of applicable single conductor, double bundle conductor, 4 line hook C of 3 line hook B of applicable 3 bundle conductors and applicable 4 bundle conductors.3 line hook B, 6 bundle conductors of can also slinging.4 line hook C, 8 bundle conductors of can also slinging.

The neck of hook band steel of two-wire hook A is made, and button has two circular holes laterally placed in the middle; Handle body one side is welded with two round steel hook processed between two parties, and hook equals the double bundle conductor spacing apart from X.

The three-jaw neck of hook band steel of 3 line hook B is made, and middle neck of hook button has two circular holes laterally placed in the middle, and respectively there is a side handle both sides; Lower end one side of two side handles and the middle neck of hook is welded with round steel hook processed, and hook equals 3 bundle spacings apart from y.Upper end between both sides handle and the middle neck of hook is welded with crosspiece and supports.

The vulsellum hook handle band steel of 4 line hook C is made, and the left and right neck of hook is welded into one, in have crosspiece to support, button has two circular holes laterally placed in the middle; Be welded with the round steel hook at right neck of hook homonymy hypomere, hook equals 4 bundle spacings apart from Z.

Wire coupler body 12 steel pipe manufacture, drilling is flattened in upper end, with bolt 3, U-shaped link 2 is housed; Hypomere is flattened, and a side is welded with single hook 13 between two parties.

Claims

1. cross-arm insurance messenger wire ladder, be comprised of the line hanging hook under terraced body and terraced body, it is characterized in that: a, by safety rope (1), U-shaped link (2), terraced body (4), line hanging hook (6), formed, and had annex to lead hook; The pin nail (5) that b, terraced body (4) have left and right alternately to be fixedly mounted with; B, first bolt (3) the hinge dress U-shaped link (2) that passes through of ladder; C, terraced tail are fixedly mounted with line hanging hook (6) by two bolts (3); D, terraced first ladder have been fastened safety rope (1) with it.

2. cross-arm according to claim 1 insures the messenger wire ladder, and it is characterized in that: terraced body (4) band steel is made, and pin nail (5) installing hole is above arranged, and arrange between two parties in all holes, pitch-row 450mm; First the first pin nail (5) of ladder is near bolt (3); The ladder tail is fixedly mounted with two holes of line hanging hook (6) and follows closely (5) near terraced caudal leg; The high overall length for the insulator string 10 that will pass through of ladder and the length that suspension clamp (11) length sum deducts line hanging hook (6), then deduct half meter.

3. cross-arm according to claim 1 insures the messenger wire ladder, it is characterized in that: pin nail (5) is selected M16x180 steel tower pin nail, and termination is welded with the back-up ring that Φ 6mm round steel curves ring-type.

4. cross-arm according to claim 1 insures the lifting rope ladder, and it is characterized in that: the neck of hook band steel of two-wire hook (A) is made, and button has two circular holes laterally placed in the middle; Handle body one side is welded with two round steel hook processed between two parties, and hook equals the double bundle conductor spacing apart from (X).

5. cross-arm according to claim 1 insures the messenger wire ladder, and it is characterized in that: the three-jaw neck of hook band steel of 3 line hooks (B) is made, and middle neck of hook button has two circular holes laterally placed in the middle, and respectively there is a side handle both sides; Hypomere one side of two side handles and the middle neck of hook is welded with round steel hook processed, and hook equals the tripartition wire pitch apart from (Y); Upper end between two side handles and the middle neck of hook is welded with crosspiece and supports.

6. cross-arm according to claim 1 insurance messenger wire ladder, it is characterized in that: the vulsellum hook band steel of 4 line hooks (c) is made, and the left and right neck of hook is welded into one, in have crosspiece to support, button has two circular holes laterally placed in the middle; Neck of hook homonymy lower end, left and right is welded with round steel hook processed, and hook equals four apportion wire pitch apart from (Z).

7. cross-arm according to claim 1 insures the messenger wire ladder, and it is characterized in that: lead hook coupler body (12) and use the steel pipe manufacture, drilling is flattened in upper end, with bolt (3), U-shaped link (2) is housed; Lower end is flattened, and a side is welded with single hook (13) between two parties.