CN102817552B - Direct-current 500kV circuit lower composite insulator flexible ladder - Google Patents

Abstract

The present invention relates to the field of maintenance work tools on power poles and towers, in particular to a composite insulator soft ladder under a DC 500kV line, which includes an upper hanging point, a lower single hook, a sling and a pedal crossbar, and is characterized in that the upper hanging point is double hanging The two upper hanging points are connected by insulating slats, the width of the lower single hook is 150-200mm, and the width of the pedal crossbar is 300-350mm; the upper hanging point includes the hanging body, the sling reel and the reel positioning device. There is a gap corresponding to the cross arm, and the sling reel is connected to the hanging body. One end of the sling reel is a polygonal head, and the other end of the sling reel is connected to the reel positioning device. superior. Compared with the prior art, the beneficial effect of the present invention is: the use of double hanging point structure increases the anti-rotation performance of the ladder, reduces the rotation and shaking of the maintenance personnel when they get off the ladder, and avoids the falling casualties caused by the maintenance personnel's panic Accidents happen.

Description

Composite insulator soft ladder for DC 500kV line

technical field

The invention relates to the field of maintenance work tools on power poles and towers, in particular to a composite insulator soft ladder under a DC 500kV line.

Background technique

The lower composite insulator soft ladder used in China at present mostly adopts a structure with a single hanging point at the upper end and a single hook at the lower end. When in use, hook the lower end on the wire first, hook the upper end on the angle steel of the cross arm, and then tighten the sling to allow the maintenance personnel to descend the ladder. Its shortcoming is that it is easy to rotate and shake when going down the soft ladder, which causes the climbers to panic, and there is a great potential safety hazard.

Contents of the invention

The purpose of the present invention is to provide a synthetic insulator soft ladder under a DC 500kV line, which avoids the rotation problem when getting off the ladder, is easy to install, and is safe and reliable.

In order to solve the problems of the technologies described above, the technical solution of the present invention is:

Composite insulator soft ladder under DC 500kV line, including upper hanging point, lower single hook, sling and pedal crossbar. The upper hanging point is double hanging point, and the two upper hanging points are connected by insulating slats. 150-200mm, the width of the pedal crossbar is 300-350mm;

The upper hanging point includes the hanging body, the sling reel and the reel positioning device. The corresponding cross arm is provided with a gap on the hanging body. The sling reel is connected with the hanging body. Connected, the sling reel is provided with a through groove, and the end of the sling is fixed on the through groove;

The reel positioning device includes a cover, a pawl, a ratchet and a rotary handle, the ratchet is arranged at the other end of the sling reel, the cover is provided with a pawl, a spring is arranged between the pawl and the cover, and the rotary handle is located on the ratchet. After the tail end of the pawl, the cover is connected with the hanging body, the head end of the pawl is embedded between the outer edge grooves of the ratchet, preventing the sling reel from rotating to achieve positioning.

One side of the handle is provided with a pointed protrusion for positioning, and a groove is provided at the corresponding cover. When the pointed protrusion falls into the groove, the sling reel is fixed and cannot rotate relative to the cover. When the handle is lifted When the pointed protrusion is separated from the groove, the sling reel can be rotated to realize the tightness adjustment of the sling.

The pedal crossbar includes insulating pipes, end caps and strap fixing strips, end caps are provided at both ends of the insulating tubing, strap fixing strips are arranged inside the insulating tubing, and the two ends of the strap fixing strips are respectively fixed to two straps running through the insulating tubing. connect.

Compared with the prior art, the beneficial effect of the present invention is: due to the double hanging point structure, the anti-rotation performance of the ladder is increased, the rotation and shaking of the maintenance personnel are reduced when they get off the ladder, and the maintenance personnel are prevented from falling due to panic Casualty accidents occur, and at the same time, the installation of the device is easier and the adjustment is more convenient.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a sectional view along line A-A of Fig. 2;

Fig. 4 is a sectional view along line B-B in Fig. 2 .

Among them: 1-upper hanging point 2-lower single hook 3-sling 4-pedal crossbar 5-insulation slat 6-hanging body 7-sling reel 8-reel positioning device 9-horn angle steel 10-notch 11-through slot 12-Cover 13-Pawl 14-Ratchet 15-Handle 16-Spring 17-Pointed protrusion 18-Groove 19-Insulation pipe 20-End cap 21-Sling fixing strip 22-Wire

Detailed ways

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

See Fig. 1, Fig. 2, Fig. 3, it is the structure schematic diagram of embodiment of synthetic insulator soft ladder under direct current 500kV line of the present invention, comprises upper hanging point 1, lower single hook 2, sling 3 and pedal crossbar 4, and upper hanging point 1 is double Hanging point, the two upper hanging points 1 are connected by insulating slats 5, and the insulating slats 5 are provided with long holes, which can realize the adjustment of the distance between the two upper hanging points 1. In order to improve the anti-rotation performance of the ladder, The width of the single hook 2 is 150-200mm, and the width of the pedal rail 4 is 300-350mm; during use, the single hook 2 is hooked on the wire 22, and the upper hanging point 1 is hung on the cross-arm angle steel 9.

The upper hanging point includes a hanging body 6, a sling reel 7 and a reel positioning device 8, and the hanging body 6 is provided with a gap 10 corresponding to the cross-arm angle steel 9. Rotate, in order to make the sling reel 7 rotate conveniently, one end of the sling reel 7 is a polygonal head, the other end of the sling reel 7 is connected with the reel positioning device 8, the sling reel 7 is provided with a through groove 11, and the end of the sling 3 is fixed on the through hole. slot 11, so that the sling 3 is wound around the sling reel 7;

Reel positioning device 8 comprises cover 12, ratchet 13, ratchet 14 and rotary handle 15, and ratchet 14 is located at the other end of sling reel 7, and cover 12 is provided with ratchet 13, between ratchet 13 and cover 12 A spring 16 is provided, and the handle 15 is arranged at the tail end of the ratchet 13. After the cover 12 is connected with the hanging body 6, the head end of the ratchet 13 is embedded between the outer edge grooves of the ratchet wheel 14, preventing the sling reel 7 from rotating to achieve position.

One side of the handle 15 is provided with a pointed protrusion 17 for positioning, and the corresponding cover 12 is provided with a groove 18. When the pointed protrusion 17 falls into the groove 18, the head end of the ratchet 13 and the surface of the ratchet 14 Contact, the sling reel 7 is fixed relative to the cover 12 and cannot rotate. When the handle 15 is lifted to make the pointed protrusion 17 break away from the groove 18, the sling reel 7 can rotate, thereby realizing the length adjustment of the sling 3, so that the soft ladder is in the Tension between cross arm angle steel 9 and lead wire 22.

See Fig. 4, pedal crossbar 4 comprises insulating pipe material 19, end cover 20 and suspender strap fixing bar 21, and insulating pipe material 19 two ends are provided with end cap 20, and insulating pipe material 19 inside is provided with suspender fixing bar 21, and the two ends of suspender fixing bar 21 The ends are respectively fixedly connected with two suspenders 3 that run through the insulating pipe material 19, usually by suture connection, and also by bolts and other connection methods. The suspender fixing strip 21 can fix the distance between adjacent pedal crossbars, and increase the distance between the suspenders and the feet. The strength of the connection between the rungs.

Claims (3)

1. synthetic insulator rope ladder under direct current 500kV circuit, comprise hanging point, the hook that places an order, suspender belt and foot-operated beam, it is characterized in that, described upper hanging point is double hanging point, connected by insulation lath between two upper hanging points, the hook width that places an order is 150-200mm, foot-operated beam width is 300-350mm;

Upper hanging point comprises hanging body, suspender belt spool and spool positioner, on hanging body, corresponding cross-arm is provided with gap, suspender belt spool is flexibly connected with hanging body, one end of suspender belt spool is polygonal head, the other end of suspender belt spool is connected with spool positioner, suspender belt spool is provided with groove, and suspender belt end winding support is on groove;

Described spool positioner comprises cover cap, ratchet, ratchet and swing handle, the other end of suspender belt spool is located at by ratchet, cover cap is provided with ratchet, spring is provided with between ratchet and cover cap, swing handle is located at the tail end of ratchet, after cover cap is connected with hanging body, the head end of ratchet is embedded between the outer rim groove of ratchet, stops suspender belt spool to rotate and realizes location.

2. synthetic insulator rope ladder under direct current 500kV circuit according to claim 1, it is characterized in that, the side of described swing handle is provided with the pointed projections of location, corresponding cover cap place is provided with groove, when pointed projections falls into groove, suspender belt spool opposing cover is fixed and can not rotates, when mentioning swing handle and making pointed projections and groove depart from, suspender belt spool is namely rotatable, and the degree of tightness realizing suspender belt regulates.

3. synthetic insulator rope ladder under direct current 500kV circuit according to claim 1, it is characterized in that, described foot-operated beam comprises insulated pipes used, end cap and suspender belt fixed strip, insulated pipes used two ends are provided with end cap, insulated pipes used inside is provided with suspender belt fixed strip, and the two ends of suspender belt fixed strip are fixedly connected with two suspender belts running through insulated pipes used respectively.