CN201252363Y - Combined tool for replacing a linear insulator of an electric transmission line - Google Patents

Abstract

The utility model combined tool for replacing linear insulators for transmission lines is characterized in that it includes a high-strength fiber rope, a hand tensioner and a soft ladder, one end of the high-strength fiber rope is provided with a connector, and the other end is connected with the wire tensioner The other end of the soft ladder is connected with the soft ladder, and the other end of the soft ladder is connected with the hook. When the operator needs to go down to the wire or lift the wire for inspection and maintenance, first wrap the high-strength fiber rope on the cross arm of the wire, make the hook at the lower end of the ladder hook the wire, and then use the ratchet wrench to tighten the ladder to lift the wire. Fasten the safety safety rope, and under the protection of the safety belt, you can work when you get down to the wire. The utility model reduces the weight of the tool, lowers the difficulty of operation, and improves the labor efficiency.

Description

Combined Tool for Replacing Linear Insulators on Transmission Lines

technical field

The utility model belongs to maintenance tools for transmission lines, in particular to a tool for replacing linear insulators in 110KV transmission lines.

Background technique

Porcelain and composite materials are commonly used in insulators in transmission lines. As the insulators used in the line, on the one hand, they must bear the electrical withstand voltage of the electrical parameters of the corresponding voltage level, on the other hand, they must bear the load of the line pole tower fittings, wires, vertical and longitudinal forces, as well as external natural wind loads, Conductors walking on ice, vibration and galloping of conductors caused by wind bring various fatigue, strain and aging to insulators. According to the regulations and recommended methods of international routines, long-term operation, severe aging, long-term depreciation, decline in various performance indicators, reaching decommissioning standards, and replacement of transmission line insulators caused by line overhaul, transformation, new construction and various accidents are required. . The straight pole towers in the line account for 80% of the entire line pole towers, and the methods and tools used to replace the straight pole insulators are relatively backward. According to the technical regulations of maintenance technology for power grid operations: there are three main routine methods for replacing insulators, one is the live work method, the other is the indirect live work method, and the third is the line power outage work method.

According to the technical requirements such as workload and weather, the maintenance plan of the entire power grid, and the requirements of specific implementation operation standards, from the balance of safety, reliability and operation risk coefficient, the main replacement method that is currently promoted is to choose the third method. It is usually arranged according to the plan and unified power outage scheduling. The operating unit and personnel wait for the entire line to be powered off; issue a work order; the staff perform work procedures, handle work tickets, and explain safety measures and dangerous points; After the grounding measures are taken, the work of boarding the pole to replace the insulator can be started. Replacing insulators is technically a high-altitude operation in terms of the working environment; due to the large amount of equipment involved, and the tools used are mostly inverted chain hoists, spare wire sleeves, pulley blocks and other operating conditions, it is a high-risk state; the replacement work generally requires two Two people work, work and supervise two people on the site under the pole to work around the security service on the pole. From preparation to replacement, the personnel working on the entire pole need to go up and down repeatedly. The personnel have to work twice on the tight and loose wires. Moreover, the size and distance of each part need to be adjusted in the middle. distance.

Existing tools used to replace insulators mainly include chain hoists, pulley blocks, safety ropes, hard ladders, transfer ropes, etc., with a total weight of 20Kg. The process is complicated and the required time is long. During the operation process, the labor intensity of the personnel on and off the pole is high, which may easily cause muscle fatigue and cause danger. Especially the personnel on the pole, working on the pole tower with narrow space, are very prone to accidents such as falling objects from high altitude.

Contents of the invention

The technical problem to be solved by the utility model is to provide a combined tool for replacing linear insulators on transmission lines, which reduces the weight of the tool, reduces the difficulty of operation, and improves labor efficiency.

The utility model combined tool for replacing linear insulators for transmission lines is characterized in that it includes a high-strength fiber rope, a hand tightener and a soft ladder, one end of the high-strength fiber rope is provided with a connector, and the other end is connected with the hand tightener. The other end of the tensioner is connected with the ladder, and the other end of the ladder is connected with the hook.

The hand tensioner can be various commercially available products with suitable structures, and the utility model preferably adopts a ratchet hand tensioner with pulley hooks at both ends. As a lifting tool, the wire tensioner adopts a ratchet hand plate wire tensioner with a load greater than 2 tons, and adjusts tightening and loosening by adjusting the rotation direction of the ratchet. The load-bearing material chooses high-strength fiber rope (such as 10mm in diameter), which can not only ensure the strength, but also reduce the weight. If steel wire rope is selected for use, the purpose of weight reduction cannot be achieved. The old-fashioned hard ladder is used for the original replacement tools, and dangers are likely to occur when the maintenance personnel go off the assembly line. The utility model adopts a soft ladder with adjustable length, which can ensure safety.

Advantage of the utility model:

(1) Reduced tool weight. Use high-strength fiber rope with a diameter of 10mm as the main material; choose a ratchet hand plate tensioner with a load greater than 2 tons. The total weight of the tool is less than 10Kg, which can not only ensure the strength, but also reduce the weight.

(2) Reduce the number of staff and reduce the difficulty of operation. Two people are needed on the original work pole, but only one person is needed to work on the pole of the utility model. The personnel can simply adjust the required force distance of the insulator to be replaced on the pole, and adjust it to the optimum, so as to save labor, time and reduce the cost. Minimize the expansion of various unbalanced forces caused by excessive working distance, which ensures the stability of the working force center of the operator on the pole, and achieves safe and reliable work.

(3) Compared with traditional tools, the utility model is greatly reduced in weight, reduces the labor intensity of staff, and indirectly ensures safe production. The number of people on the pole is reduced from 2 to 3 to 1, and the replacement time is reduced by an average of 17 minutes, which improves labor efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the ratchet hand tightener.

In the figure: 1 connector 2 high-strength fiber rope 3 ratchet handle tensioner 4 ladder 5 hook 6 pulley hook 7 pulley rope 8 ratchet 9 pulley hook 10 wrench

Detailed ways

Fig. 1, Fig. 2 are the structural representations of the embodiment of the utility model. Illustrate the utility model below in conjunction with accompanying drawing.

A combined tool for replacing linear insulators for 110KV transmission lines, including high-strength fiber rope 2 for load-bearing components, lifting tools, ratchet handle tensioner 3 and soft ladder 4, high-strength fiber rope 2 has a connector 1 at one end, and a ratchet handle at the other end The wire tensioner 3 is connected, and the other end of the ratchet hand pulling the wire tensioner is connected with the soft ladder 4, and the other end of the soft ladder 4 is connected with the hook 5. Fig. 2 is a kind of ratchet hand puller of known structural mode, just changes pulley rope 7 into high-strength fiber rope by original wire rope. The ratchet wrench has pulley hooks at both ends for easy connection to load-bearing elements and ladders.

The length of the soft ladder 4 is 0.9 meters, the tightening range is 0.5 meters, the load is greater than 2.0 tons, and the whole set has a self-weight of 6Kg. The high-strength fiber rope 2 has a diameter of 10cm, and the load of the ratchet hand tightener 3 is greater than 2 tons. When the operator needs to go down to the wire or lift the wire for maintenance, first wrap the high-strength fiber rope 2 on the cross arm of the wire, make the hook at the lower end of the ladder hook the wire, and then use the ratchet wrench to tighten the ladder to lift the wire. The personnel fasten the safety safety rope, and under the protection of the safety belt, they can work when they get down to the wire. First remove the connecting end of the insulator and the wire, then remove the end connected to the cross arm of the wire, and then replace with a new insulator. After the work is finished, release the safety rope, loosen the tensioner, withdraw the whole set of equipment and put it into the backpack.

Claims (2)

1, a kind of transmission line is changed the combination tool of straight line insulator, it is characterized in that comprising that high strength fibre rope (2), hand pull wire grip and rope ladder (4), high strength fibre rope (2) one ends have connector (1), the other end is pulled wire grip with hand and is connected, the other end that hand is pulled wire grip is connected with rope ladder (4), the other end coupling hook (5) of rope ladder (4).

2, combination tool according to claim 1 is characterized in that described hand pulls wire grip and pull wire grip (3) for the ratchet hand, and two ends have the pulley hook respectively.

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