CN111342394A - Maintenance device for strain tower - Google Patents

Abstract

The invention relates to an overhauling device for a tension tower, which mainly comprises a pedal, a hook, an anti-slip device, a fixed ring, an adjusting rope and a tail rope. The pedal is a platform for standing when the overhead workers overhaul, and is divided into A, B, C areas; the hook is used for connecting the area A of the pedal and a lead, and the upper end of the hook is open-mouthed; two fixed rings: one is positioned in the pedal C area and is used for connecting an adjusting rope, and the length of the adjusting rope can be adjusted to ensure that the platform is in a horizontal position; the other is positioned in the pedal B area and is connected with a tail rope, so that the left-right swinging and the position running of the pedal are avoided, and the safety is improved. The maintenance device has the advantages of safety, reliability, labor intensity reduction, no abrasion to the insulator and the like.

Description

Maintenance device for strain tower

Technical Field

The invention relates to a maintenance device of a power grid, in particular to a maintenance operation platform for replacing a strain tower insulator.

Background

In order to ensure safe, stable and reliable operation of the power grid, the composite insulator and the porcelain insulator which operate to the specified scrappage period need to be replaced regularly or irregularly.

The insulator has two kinds: insulator of straight line pole tower-refers to the insulator arranged vertically (longitudinally) on the pole tower of the transmission line: strain tower insulator-refers to the insulator arranged horizontally (transversely) on the transmission line tower.

The way of replacing insulators is also different because of the difference of insulators: the replacement of the insulator of the linear pole tower and the replacement of the insulator of the strain pole tower. Compared with the labor intensity of replacing the insulator, the linear tower replacing insulator is replaced by a tension tower insulator, the labor intensity is higher, the high-altitude retention time is longer, the material consumption of tools is more, and the danger coefficient is higher. When the single strain insulator string is replaced, the conductor clamping head needs to be installed through the insulator string, the body of an operator keeps balance all the time, and the workload for replacing the double strain insulators is larger than that of the single strain insulator string, so that the time is longer. In practice, because the problem that the fall from a terminal tower to a portal frame of a transformer substation is large generally exists, A, B, C three-phase conductors form slopes with different angles, an operator needs to keep balance during operation, measures for preventing the conductor from sliding downwards need to be taken, the difficulty of replacing the insulator of the terminal tower entering and exiting the transformer substation is much higher than that of replacing the insulator of a common strain tower, and the operator can only climb on the insulator or the conductor to operate.

Disclosure of Invention

In order to solve the problems of high labor intensity, long high-altitude operation time and low efficiency in the operation of replacing the tension pole tower insulator, the invention provides the novel maintenance device for replacing the tension pole tower insulator, which can greatly reduce the labor intensity and improve the working efficiency.

The tension tower maintenance device is realized as follows:

this strain insulator shaft tower overhauls device includes: the anti-slip device comprises a pedal 1, a hook 2, an anti-slip device 3, an adjusting hole 4, a fixed ring 5, an adjusting rope 6 and a tail rope 7. The lower end of the adjusting rope 6 is fixed on the adjusting hole 4 at one end of the pedal 1, and the upper end of the adjusting rope 6 is fixed on the cross arm; the lower end of the hook 2 is fixed on the adjusting hole 4 at the other end of the pedal 1, and the upper end of the hook 2 is fixed on the electric wire; the upper end of the tail rope 7 is fixed in the middle of the pedal 1, and the lower end of the tail rope 7 is vertical to the ground.

The pedal 1 is rectangular and is a platform for a maintainer to stand when replacing the insulator. Is divided into A, B, C areas along the length direction of the pedal 1; the A, C areas of the two ends of the pedal 1 which are symmetrical are respectively provided with a plurality of groups of adjusting holes 4 for adjusting the distance between two hanging points.

The hook 2 is positioned above the C area of the pedal 1. The lower end of the hook 2 is fixed in an adjusting hole 4 of the pedal 1; when the device is used, the pedal 1 is lifted by the hook 2, and the upper end of the hook is fixed on a lead of the strain insulator. An operator can directly hang the insulator on the cross arm side (note that the cross arm side indicates the position of the insulator suspension point angle steel of the pole tower, and the hanging means that the hook 2 is installed on the lead). The lower part of the hook 2 is provided with a semicircular ring, one end of the rope is connected with the semicircular ring, and the other end of the rope is fixed on a nearby structure, so that the pedal 1 can be prevented from swinging and sliding.

The fixing ring 5 has two: a fixing ring 5 is fixed at the adjusting hole 4 of the pedal 1A area, an adjusting rope 6 is connected above the fixing ring 5, and the upper end of the adjusting rope 6 is fixed on the tower angle steel. The length of the adjusting rope 6 can be adjusted to meet the requirements of towers with different pole types; another solid fixed ring 5 is installed in the below in footboard 1B district, and the below and the tail rope 7 upper end of this solid fixed ring 5 are connected, and 7 lower extremes of tail rope are held to ground operating personnel, but cooperation control, avoid footboard left and right rocking, run, improve the security.

This strain tower overhauls installation of device, uses:

firstly, selecting a proper adjusting hole 4 according to the voltage grade and the pole type of a power line to be overhauled;

then, a hook 2 and a fixed ring 5 are inserted into the adjusting hole 4, and an adjusting rope 6 and a tail rope 7 are connected (if the overhaul tower is a terminal tower or a tension tower with a large fall, a rope needs to be connected at the anti-slip device 3 to prevent the hook 2 from slipping);

then, the maintainer hangs the connected hook 2 on the wire side on the cross arm side, and simultaneously connects the adjusting rope 6 to the tower cross arm. The length of the adjusting rope 6 can be adjusted by the maintainer according to the self-overhauling habit, so that the pedal 1 is kept in a horizontal state;

ground cooperation personnel hand-hold tail rope 7 lower extreme, and the maintenance device is well controlled in the cooperation, avoids footboard left and right rocking, runs the position.

After that, the service person on the step 1 can normally perform the service operation.

The beneficial effect of this maintenance device is:

(1) the operator can stand on the platform pedal safely and comfortably to replace the insulator, and the operation is not required to be carried out in the traditional mode that the operator only can climb on the insulator or the wire to work.

(2) The moving of operating personnel during operation is convenient, can not swing wantonly along with the wire, so safe and reliable, labour saving and time saving, not wearing and tearing insulator, work efficiency is high.

The overhauling device is suitable for overhauling operation of 35kV to 110kV strain pole towers, terminal towers entering and exiting a substation and strain pole towers with larger drop height.

The invention is further described with reference to the following drawings and detailed description.

Drawings

Fig. 1 is a schematic view of the overall shape and structure of an inspection device for a tension tower according to an embodiment of the present invention;

FIG. 2 is a schematic view of the shape and structure of the pedal of this embodiment;

FIG. 3 is a schematic view of the shape, structure and connection relationship of the hook of this embodiment;

FIG. 4 is a schematic view illustrating the shape, structure and connection relationship of the retaining ring of the present embodiment;

FIG. 5 is a schematic view showing the shape, structure and connection relationship of the adjusting rope and the tail rope of the present embodiment.

In the figure: 1-pedal, 2-hook, 3-anti-slip device, 4-adjusting hole, 5-fixing ring, 6-adjusting rope, 7-tail rope.

Detailed Description

Embodiment maintenance device that strain tower used

FIG. 1 shows the overall shape and components of a 110kV strain tower maintenance device

The tension tower maintenance device of this embodiment includes: the anti-slip device comprises a pedal 1, a hook 2, an anti-slip device 3, an adjusting hole 4, a fixed ring 5, an adjusting rope 6 and a tail rope 7. When the device is used, the lower end of the adjusting rope 6 is connected with the fixed ring 5 in the pedal A area, and the upper end of the adjusting rope 6 is fixed on the tower angle steel; the lower end of the hook 2 is fixed on the adjusting hole 4 of the pedal A area, and the upper end of the hook 2 is hung on the guide wire; the upper end of the tail rope 7 is connected with the fixed ring 5 in the pedal B area, and the lower end of the tail rope 7 is pulled by ground workers.

FIG. 2 shows the shape and structure of the pedal of this embodiment

The pedal 1 is a main component of the maintenance device of the embodiment. Is a wood board with the length of 240cm, the width of 10cm and the height (thickness) of 5 cm. The left, middle and right of the long wood board are divided into A, B, C areas; the pedal A, C district has 3 groups of regulation holes 4 respectively-is used for penetrating couple 2 and fixed ring 5-penetrates different eyelets for adjust the distance between wire side and the cross arm side hanging point, in order to satisfy the needs of different voltage class strain insulator tower overhauls. The area B is provided with a group of eyelets for penetrating the fixing ring 5.

FIG. 3 shows the shape, structure and connection relationship of the hook of this embodiment

A vertical hook 2 is arranged above a region C at the right end of the pedal 1, the lower end of the hook 2 is fixedly connected to an adjusting hole 4 of the region C of the pedal 1, and an open-top hook at the upper end of the hook 2 is hung on a wire; a semicircular iron ring 3 is arranged at a position 10cm below the opening-type hook and used for connecting a rope for fixation and preventing the hook 2 and the pedal 1 from sliding.

The hook 2 is processed by phi 14 steel bars, is 100cm long, has an open top and a 12cm lower end, is provided with a 3mm eyelet and is used for installing an opening pin. The lower end of the hook 2 is provided with an open pin for preventing the screw from withdrawing. The semicircular iron ring 3 is not used under the general condition, when the downward angle of the lead is more than 15 degrees, one end of the rope is fixed on the semicircular iron ring 3, and the other end of the rope is fixed at the angle steel of the tower, so that the overhauling device can not slide.

FIGS. 4 and 5 show the shape, structure and connection relationship of the retaining ring of this embodiment

Two sets of fixing rings 5 are respectively fixed above the A area adjusting hole 4 and below the B area adjusting hole 4 of the pedal 1 through ropes 6 and 2. The fixing ring 5 is made of phi 14 steel bars, the fixing ring 5 above the area A is connected with the lower end of the adjusting rope 6, and the upper end of the adjusting rope 6 is fixed on the tower angle steel. The length of the rope 6, namely the length of the rope 6 at the connecting part of the lower end of the rope 6 and the fixing ring 5, can be manually adjusted to meet the requirements of towers with different pole types. The fixed ring 5 that footboard B district was connected is connecting the upper end of tail rope 7, and 7 lower extremes of tail rope are handed to ground staff, can prevent footboard left and right rocking, run position according to on-the-spot condition cooperation control, improve the security.

Claims (4)

1. An overhauling device for a strain tower is characterized by mainly comprising a pedal (1), a hook (2), an anti-sliding device (3), an adjusting hole (4), a fixed ring (5), an adjusting rope (6) and a tail rope (7);

the pedal (1) is a platform on which a maintainer stands when replacing the insulator, and is divided into A, B, C three areas along the length direction of the pedal (1); a plurality of groups of adjusting holes (4) are respectively arranged in A, C areas which are symmetrical at the two ends of the pedal (1) and are used for adjusting the distance between two hanging points;

the hook (2) is positioned above the C area of the pedal (1). The lower end of the hook (2) is fixed in the adjusting hole (4) of the pedal (1), and the upper end of the hook is fixed on a lead of the strain insulator; the lower part of the hook (2) is provided with a semicircular ring, one end of the rope is connected with the semicircular ring, and the other end of the rope is fixed on a nearby structure, so that the pedal (1) can be prevented from swinging and sliding;

the fixing ring 5 has two: a fixing ring 5 is fixed at an adjusting hole (4) in the area A of the pedal (1), an adjusting rope (6) is connected above the fixing ring (5), and the upper end of the adjusting rope (6) is fixed on a tower angle steel; and the other fixing ring (5) is arranged below the B area of the pedal (1), and the lower part of the fixing ring (5) is connected with the upper end of the tail rope (7).

2. The maintenance device that strain tower used according to claim 1, characterized in that: the upper end of the hook (2) is an open hook (5), and a person standing on the cross arm side can directly hang the hook.

3. The 35 kV-110 kV strain tower overhauling device as recited in claim 1, wherein: a plurality of adjusting holes (4) are respectively arranged at the two ends of the A, C area of the pedal (1) and used for adjusting the distance between two hanging points so as to meet the requirements of 35kV to 110kV different voltage levels of tension pole tower maintenance operation.

4. The mounting and using method of the overhaul device for the tension tower according to claim 1, wherein the method comprises the following steps:

1) firstly, according to the voltage grade of an overhauled power line and the pole type of a pole tower, appropriate adjusting holes (4) are selected at two ends of an A, C area of a pedal (1);

2) then, a hook (2) and a fixed circular ring (5) penetrate into the adjusting hole (4) to connect an adjusting rope (6) and a tail rope (7);

3) then, the maintainer hangs the connected hook (2) on the side of the cross arm on the side of the wire, and simultaneously connects the adjusting rope (6) to the cross arm of the tower;

4) the length of the adjusting rope (6) can be adjusted by the maintainer according to the self-overhauling habit, so that the pedal (1) is kept in a horizontal state;

5) ground coordinators hold the lower end of the tail rope (7) to control the maintenance device, so that the pedal (1) is prevented from swinging left and right and running;

then, the maintainer on the pedal (1) can carry out maintenance operation normally.

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