Operating method for leading-in and leading-out wires of straight pole tower of overhead transmission line

Abstract

The invention provides an overhead transmission line straight pole tower lead incoming and outgoing operation method, which comprises the following steps of: fixing a rope sleeve on hanging point cross arm angle steel on a composite insulator string of an overhead transmission line straight pole tower, and coupling a third through hole of a three-hole snap ring on the rope sleeve by using a main lock; a hanging point of the climbing rope descender is connected to a safety belt worn by an operator through a main lock; a safety rope of a safety belt is tied to the wire, the climbing rope descender, the falling stopper and the speed difference falling protector are unfastened, and operation is started; after the operation is completed, the chest type ascender is connected to the safety belt, and a safety rope of the safety belt is unfastened. The invention has the advantage of being suitable for emergency rescue, hot-line work and the like of overhead transmission lines. The safety coefficient of operators is increased, the power failure operation time is shortened, the economic benefit of a company is increased, and safe production and power supply reliability of the company are guaranteed; the operation is simple, safe and labor-saving. And multi-layer protection is realized, and safety guarantee is provided.

Description

Technical Field

[0001] This invention relates to the field of power transmission line operation and maintenance, and in particular to a method for handling incoming and outgoing conductors on straight towers of overhead power transmission lines. Background Technology

[0002] When performing maintenance work on the conductor ends of 220kV and above overhead transmission lines, both construction and troubleshooting operations require accessing and exiting the conductors. Traditional methods involve using rigid or flexible ladders. Rigid ladders, due to their large size, difficulty in carrying, and the need for ropes for transfer, have been gradually phased out. Flexible ladders, on the other hand, lack sufficient rigidity, have high rope elasticity, are prone to unhooking, and require significant physical exertion for workers, posing substantial safety hazards. Therefore, a new method for accessing and exiting conductors is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems and to provide a simple, safe and labor-saving method for the operation of incoming and outgoing conductors on straight towers of overhead transmission lines.

[0004] A method for handling incoming and outgoing conductors on straight-line towers of overhead transmission lines includes the following steps:

[0005] The first step is to fix the rope loop to the crossarm angle steel of the composite insulator string on the straight pole of the overhead transmission line. Then, pass the static rope through two of the through holes of the three-hole shackle and the rope adjuster in sequence. Connect the rope loop and the rope adjuster with the main lock. Hook one end of the static rope onto the conductor with a hook. Tighten the static rope with the rope adjuster so that the static rope is taut between the conductor and the rope adjuster. The tail of the static rope hangs down naturally after being led out from the rope adjuster.

[0006] The second step is to attach the third through hole of the three-hole shackle to the rope loop using the main lock, so that the three-hole shackle is against the inlet side of the rope adjuster, ensuring that the static rope will not come off the rope adjuster if the hook at one end of the static rope comes off.

[0007] The third step is to thread the tail rope of the static rope into the rappelling device, connect the anchor point of the rappelling device to the safety belt worn by the worker using the main carabiner, and tie a knot in the tail rope of the static rope 0.5 meters above the guide wire to prevent the rappelling device from slipping off the tail rope of the static rope.

[0008] The fourth step is for the worker to lock one end of the fall arrester to the taut static rope, and connect the other end to the safety belt via a protective strap; then hang the speed differential fall arrester on the crossbeam angle steel, and connect the safety rope of the speed differential fall arrester to the safety belt.

[0009] Fifth, the operator then uses their hands to control the control handle of the rope descender and slowly descends along the tail rope of the static rope to the guide wire.

[0010] Step 6: Secure the safety rope of the safety harness to the guide wire, and disconnect the rappelling descender, fall arrestor, and speed difference fall arrestor to begin the operation;

[0011] Step 7: After the operation is completed, connect the chest ascender to the safety belt, pass the tail rope of the static rope through the chest ascender and the hand ascender in sequence, lock the lock at one end of the fall arrester to the taut static rope, and connect the other end to the safety belt through the safety strap; connect the safety rope of the speed difference fall arrester to the safety belt; untie the safety rope of the safety belt, and the operator can climb upward along the tail rope of the static rope by using the chest ascender and the hand ascender in combination.

[0012] Step 8: When the worker climbs up the static rope to the crossbeam angle steel, he holds the crossbeam angle steel, flips over to the top of the crossbeam angle steel, fastens the safety rope on the safety belt, and unfastens the chest ascender, hand ascender, fall arrestor and speed difference fall arrestor. The operation is then completed.

[0013] As a further preferred option, the seat belt is a five-point seat belt.

[0014] The beneficial effects of this invention are:

[0015] When using this method to climb towers to enter and exit conductors, it can adapt to different geographical environments, different voltage levels, different types of composite insulator lengths, and V-type composite insulator strings and suspension insulator strings. It is not only applicable to the entry and exit of conductors on straight towers of 220kV and above overhead transmission lines, but also to emergency rescue and live-line work on overhead transmission lines.

[0016] When using this method to climb towers and access conductors, the tools used are small and lightweight, making them easier to carry, thus improving work efficiency and reducing the physical exertion of workers. Multiple layers of protection prevent falls from heights during conductor access operations, effectively preventing the risk of falls and increasing worker safety. This also reduces power outage time, increases the company's economic benefits, and ensures safe production and reliable power supply. The method is simple, safe, and labor-saving.

[0017] Compared with traditional methods of using rope ladders and hard ladders to access and exit conductors, this method can achieve multiple layers of protection through rope descenders, fall arresters, and speed difference fall arresters. This effectively reduces personal injury accidents caused by physical exhaustion or other unexpected reasons when workers are accessing and exiting conductors, prevents falls from heights, and provides safety assurance for overhead transmission line access and exit conductor maintenance operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the operation when the present invention proceeds to step two;

[0019] Figure 2 This is a schematic diagram of the operation when the present invention proceeds to step four;

[0020] Figure 3 This is a schematic diagram of the operation when the present invention proceeds to step six;

[0021] Figure 4 This is a schematic diagram of the operation when the present invention proceeds to step seven;

[0022] Figure 5 yes Figure 1 A magnified view of a portion of the image;

[0023] In the diagram: 1. Static rope; 2. Hook; 3. Sling; 4. Main carabiner; 5. Differential fall arrestor; 6. Three-hole shackle; 7. Rope adjuster; 8. Worker; 9. Safety belt; 10. Rope descender; 11. Fall arrestor; 12. Chest ascender; 13. Hand ascender; 14. Guide wire. Detailed Implementation

[0024] The present invention will be further explained below with reference to specific implementation schemes, but it is not limited to the present invention. The structures, proportions, sizes, etc. shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] like Figures 1-4 As shown, the present invention relates to a method for the operation of incoming and outgoing conductors on a straight tower of an overhead transmission line, comprising the following steps:

[0026] The first step is for the operator 8 to fix the rope loop 3 to the crossarm angle steel of the composite insulator string on the straight pole of the overhead transmission line. The static rope 1 is then passed through two of the through holes of the three-hole shackle 6 and the rope adjuster 7. The main lock 4 connects the rope loop 3 and the rope adjuster 7. One end of the static rope 1 is hooked onto the conductor 14 through the hook 2. The static rope 1 is tightened through the rope adjuster 7, so that the static rope 1 is taut between the conductor 14 and the rope adjuster 7. The tail of the static rope 1 is led out from the rope adjuster 7 and hangs down naturally. The three-hole shackle 6 is a pin-shaped adjustment plate with three through holes.

[0027] The second step is to attach the third through hole of the three-hole shackle 6 to the rope loop 3 using another main lock 4, so that the three-hole shackle 6 rests against the cable inlet side of the rope adjuster 7, ensuring that the static rope 1 will not come off the rope adjuster 7 if the hook 2 at one end of the static rope 1 becomes unhooked; Figure 1 and Figure 5 As shown;

[0028] The third step is to thread the tail rope of the static rope 1 into the rappelling descender 10, and use the main carabiner to connect the anchor point of the rappelling descender 10 to the safety belt 9 worn by the worker 8. The safety belt 9 is a five-point safety belt, which is used to achieve the first layer of protection. Tie a knot in the tail rope of the static rope 1 0.5 meters above the guide wire 14 to prevent the rappelling descender 10 from slipping off the tail rope of the static rope 1.

[0029] Fourthly, the operator locks one end of the fall arrester 11 to the taut static rope 1, and connects the other end to the safety belt 9 via a protective strap; this provides the second layer of protection. Then, the speed-differential fall arrester 5 is attached to the crossbeam angle steel via the main lock and rope loop 3 connected to its upper end, and the safety rope of the speed-differential fall arrester 5 is connected to the safety belt 9; this provides the third layer of protection. Figure 2 As shown;

[0030] Fifth step: Then the operator uses his hand to control the control handle of the rope descender 10 and slowly descends along the tail rope of the static rope 1 to the guide wire 14.

[0031] Step six: Secure the safety rope of safety harness 9 to guide wire 14, and untie the rappelling descender 10, fall arrester 11, and speed differential fall arrester 5. Work can then begin on guide wire 14. Figure 3 As shown;

[0032] Step 7: After the operation is completed, connect the chest ascender 12 to the safety belt 9. Pass the tail rope of the static rope 1 through the chest ascender 12 and the hand-held ascender 13 in sequence. Then, lock one end of the fall arrester 11 to the taut static rope 1, and connect the other end to the safety belt 9 via a safety strap. Connect the safety rope of the differential fall arrester 5 to the safety belt 9. Untie the safety rope of the safety belt 9 from the guide wire 14. The operator can then climb upwards along the tail rope of the static rope 1 by coordinating the chest ascender 12 and the hand-held ascender 13. Figure 4 As shown;

[0033] Step 8: When the worker climbs up the static rope 1 to the crossbeam angle steel, he holds the crossbeam angle steel and flips over to the top of the crossbeam angle steel. He then secures the safety rope on the safety belt 9, and unties the chest ascender 12, hand ascender 13, fall arrester 11, and speed difference fall arrester 5. The operation is then complete.

[0034] Compared with traditional methods of using rope ladders and hard ladders to enter and exit conductors, this method can achieve multi-layer protection through the climbing descender 10, the fall arrester 11 and the speed difference fall arrester 5. This effectively reduces personal injury accidents caused by physical exhaustion or other unexpected reasons when workers enter and exit conductors, prevents falls from heights, and provides safety assurance for the maintenance of overhead transmission lines.

[0035] Matters not covered in this invention are common knowledge.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for operating incoming and outgoing conductors on a straight tower of an overhead transmission line, characterized in that: The steps are as follows: The first step is to fix the rope loop to the crossarm angle steel of the composite insulator string on the straight pole of the overhead transmission line. Then, pass the static rope through two of the through holes of the three-hole shackle and the rope adjuster in sequence. Connect the rope loop and the rope adjuster with the main lock. Hook one end of the static rope onto the conductor with a hook. Tighten the static rope with the rope adjuster so that the static rope is taut between the conductor and the rope adjuster. The tail of the static rope hangs down naturally after being led out from the rope adjuster. The second step is to attach the third through hole of the three-hole shackle to the rope loop using the main lock, so that the three-hole shackle is against the inlet side of the rope adjuster, ensuring that the static rope will not come off the rope adjuster if the hook at one end of the static rope comes off. The third step is to thread the tail rope of the static rope into the rappelling device, connect the anchor point of the rappelling device to the safety belt worn by the worker using the main carabiner, and tie a knot in the tail rope of the static rope 0.5 meters above the guide wire to prevent the rappelling device from slipping off the tail rope of the static rope. The fourth step is for the worker to lock one end of the fall arrester to the taut static rope, and connect the other end to the safety belt via a protective strap; then hang the speed differential fall arrester on the crossbeam angle steel, and connect the safety rope of the speed differential fall arrester to the safety belt. Fifth, the operator then uses their hands to control the control handle of the rope descender and slowly descends along the tail rope of the static rope to the guide wire. Step 6: Secure the safety rope of the safety harness to the guide wire, and disconnect the rappelling descender, fall arrestor, and speed difference fall arrestor to begin the operation; Step 7: After the operation is completed, connect the chest ascender to the safety belt, pass the tail rope of the static rope through the chest ascender and the hand ascender in sequence, lock the lock at one end of the fall arrester to the taut static rope, and connect the other end to the safety belt through the safety strap; connect the safety rope of the speed difference fall arrester to the safety belt; untie the safety rope of the safety belt, and the operator can climb upward along the tail rope of the static rope by using the chest ascender and the hand ascender in combination. Step 8: When the worker climbs up the static rope to the crossbeam angle steel, he holds the crossbeam angle steel, flips over to the top of the crossbeam angle steel, fastens the safety rope on the safety belt, and unfastens the chest ascender, hand ascender, fall arrestor and speed difference fall arrestor. The operation is then completed.

2. The method for operating incoming and outgoing conductors on straight towers of overhead transmission lines according to claim 1, characterized in that: The safety belt mentioned is a five-point safety belt.

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