CN201269042Y - Special ladder for repairing wire of high-tension line - Google Patents

Abstract

The utility model discloses a high-voltage line overhaul dedicated ladder which is operated conveniently, safely and reliably. The dedicated ladder comprises a ladder and a lap-joint device. The ladder consists of a top ladder joint and other joints connected with the top ladder joint. Two ends of the lap-joint device are provided with hooks, and the middle of the lap-joint device is provided with a rod body of a connector. The rod body between the hooks and the connector are fixedly provided with an elevation device. The lap-joint device is vertically and fixedly arranged at the upper end of the top ladder joint by the connector. The hooks at the two ends of the lap-joint device simultaneously clamp two parallel electric wires so that the ladder is firmer, works more safely and is convenient for arrangement; and, during the overhaul of conducting wires of transmission lines, the work efficiency is improved, the operation time is shortened and the safety is improved.

Description

A special ladder for maintenance of high-voltage line conductors

technical field

The utility model relates to a special ladder for maintenance.

Background technique

With the rapid development of our country's national economy and the rapid improvement of people's living standards, electricity has become an indispensable assistant in our lives. At present, as the main way to transmit electric power, the transmission line plays the role of link and bridge, and its safety and reliability directly affect the stability of the power system. In recent years, frequent natural disasters and accidents have caused many accidents of power transmission lines falling and disconnecting, resulting in large-scale power outages, which have seriously affected the healthy development of the economy and the stability and prosperity of the society. Power supply departments around the country have taken effective measures to prevent line galloping. The installation of phase-to-phase anti-galling spacers is the most effective and economical anti-galling method used on transmission lines at present. The principle is to reduce the vibration amplitude of the conductors through the mechanical connection between the three-phase conductors, thereby achieving the purpose of preventing conductor galloping. However, at present, the traditional ladder operation method is widely used in China to install the phase-to-phase anti-galling spacers, which is time-consuming, inefficient, and very inconvenient to operate. This method is labor-intensive, time-consuming, and inefficient, and the installation time of each group needs 154 minutes, which seriously affects the work progress.

Utility model content

The purpose of the utility model is to provide a convenient, safe and reliable ladder for the maintenance of high-voltage line conductors.

In order to achieve the above object, the utility model adopts the following technical solutions: including a ladder and an overlapping device, the ladder is composed of a top ladder section and a ladder section connected to it, the overlapping device is provided with hooks at both ends, and a The rod body of the connecting head is fixedly equipped with a lifting device on the rod body between the crotch and the connecting head, and the lapping device is vertically fixedly installed on the upper end of the top ladder section through the connecting head.

The lower end of the top ladder section is provided with a groove.

The ladder section is composed of a cylinder and pedals arranged on both sides of the cylinder. The upper end of the ladder section is provided with a protrusion whose diameter is smaller than that of the cylinder, and the lower end is provided with a groove matching the protrusion.

The cross-sectional shape of the cylinder is circular, square or polygonal.

The pedals are arranged alternately on both sides of the cylinder, and the distance between adjacent pedals on the same side is 50-90 cm.

The connecting head is tubular, with an inner diameter greater than the outer diameter of the cylinder. The connecting head is provided with at least one small hole, and at least one threaded hole matching the small hole on the connecting head is provided at the upper end of the top ladder section.

The rod body is made of stainless steel.

The lifting device is a movable pulley or a ring.

After adopting this technical scheme, the hooks at both ends of the lapping device hold two parallel electric wires at the same time, which makes the ladder more reliable, safer to work, convenient to erect, and improves work efficiency in the process of overhauling the wires of the transmission line, shortening the The working time is shortened and the safety factor is improved.

Description of drawings

Fig. 1 is the structural representation of the utility model special-purpose ladder for the maintenance of high-voltage line conductors;

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

Fig. 3 is the structural representation of the utility model to take the top ladder section;

Fig. 4 is the structural representation of the utility model ladder section;

Fig. 5 is the bottom view of Fig. 4;

Fig. 6 is the structural representation of the utility model lapping device;

Figure 7 is a top view of Figure 6;

Fig. 8 is a right side view of Fig. 6 .

Detailed ways

Including a ladder and a lapping device 3, the ladder is composed of a top ladder section and a ladder section connected to it, the lower end of the top ladder section is provided with a groove, and the ladder section is composed of a square cylinder 1 and two sides of the cylinder. Composed of pedals 2, the pedals are staggered on both sides of the cylinder, the distance between adjacent pedals on the same side is 70 cm, the upper end of the ladder section is provided with a protrusion 5 with a diameter smaller than the cylinder, and the lower end is provided with a protrusion corresponding to the protrusion. Fitted groove6. Overlapping device is that two ends are provided with crotch 7, the rod body that the middle is provided with the stainless steel of connector 9 to make, on the rod body between crotch and connector, be fixedly installed with annulus 8 or moving pulley. The connector is tubular, with an inner diameter larger than the outer diameter of the cylinder. The connector is provided with two small holes 11, and the upper end of the top ladder section is provided with two threaded holes 4 matching the small holes on the connector. The two screws 10 are respectively Through the 2 small holes on the connecting head, it is connected with the 2 threaded holes on the ladder, so that the lapping device is vertically fixed on the upper end of the ladder.

When in use, fix the lapping device and the ladder well, and connect the hooks at both ends of the lapping device to the two parallel wires, so as to fix the ladder. The hooks at both ends of the lapping device simultaneously clamp two Parallel wires make the ladder more reliable, safer to work, convenient to erect, improve work efficiency, shorten working time and improve safety factor in the process of overhauling transmission line conductors; pass the rope through the circle on the lapping device Ring or movable pulley, both ends are close to the ground, and one end has a box for placing items. When you need to transport things like the above, pull the other end, and the box with things will rise, thus saving the time for maintenance workers to climb up and down. Safe and fast.

Claims (8)

1, a kind of high-tension line lead maintenance special-purpose ladder, comprise ladder and lap device, it is characterized in that: described ladder is made up of top section of ladder and connected section of ladder, lap device is that two ends are provided with the body of rod that crotch, centre are provided with connector, be installed with lifting gear on the body of rod between crotch and the connector, lap device is installed in the upper end of top section of ladder by the connector vertical fixing.

2, according to the described high-tension line lead maintenance of claim 1 special-purpose ladder, it is characterized in that: the lower end of described top section of ladder is provided with groove.

3, according to the described high-tension line lead maintenance of claim 2 special-purpose ladder, it is characterized in that: described section of ladder is formed by a cylinder with at the pedal of cylinder both sides setting, the section of ladder upper end is provided with the projection of diameter less than cylinder, and the lower end is provided with the groove that matches with projection.

4, according to the described high-tension line lead maintenance of claim 3 special-purpose ladder, it is characterized in that: the shape of cross section of described cylinder is circular, square or polygon.

5, according to the described high-tension line lead maintenance of claim 4 special-purpose ladder, it is characterized in that: described pedal is crisscross arranged in the cylinder both sides, and the distance between the adjacent pedal of homonymy is 50～90 centimetres.

6, according to claim 1 or 2 described high-tension line lead maintenance special-purpose ladders, it is characterized in that: connector is a tubulose, internal diameter is greater than the cylinder external diameter, and connector is provided with at least 1 aperture, is provided with at least 1 screwed hole that matches with aperture on the connector in the upper end of top section of ladder.

7, according to the described high-tension line lead maintenance of claim 1 special-purpose ladder, it is characterized in that: the described body of rod is the body of rod that stainless steel is made.

8, according to the described high-tension line lead maintenance of claim 1 special-purpose ladder, it is characterized in that: described lifting gear is movable pulley or annulus.

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