CN-121983885-A - Power transmission line guide rope arrangement operation method

Abstract

The invention discloses an operation method for arranging a guide rope of a power transmission line, and belongs to the technical field of power transmission line overhead construction. In the construction of the ultra-high voltage/extra-high voltage large-span transmission line, the traditional method has strong sealing dependence, low multiphase rope displacement efficiency and high overhead working risk. According to the invention, an unmanned aerial vehicle is adopted to spread the primary guide rope, a plurality of subsequent guide ropes are pulled to each crossing tower ground wire paying-off pulley through the primary guide rope, the guide ropes are alternately shifted on the opposite-bank crossing tower by utilizing a pulley group system comprising a double-door paying-off pulley, and the traction ropes are shifted in phase by a double-chain hoist lifting system for four split conductors. The invention does not need the sealing operation, the construction efficiency is obviously improved, the safety of the high-altitude operation is high, the sag and tension control are accurate, and the invention is suitable for the construction scene of the long-span power transmission line which can not be sealed, such as the crossing channel, the canyon and the like.

Inventors

• BAO QING
• CAO WENMING
• SHI BOFANG
• WANG LIN
• JIANG WEI
• YU PING
• XU CHUNXIN
• Wo Nan
• XIAO XIMING
• YU JIAJIN
• LIU LIBO

Assignees

• 浙江省送变电工程有限公司
• 国网浙江省电力有限公司

Dates

Publication Date

20260505

Application Date

20251211

Claims (5)

1. 1. An operation method for arranging a guide rope of an electric transmission line is characterized by comprising the following steps: 1) The unmanned aerial vehicle spreads the primary guide rope, namely, the unmanned aerial vehicle is adopted to drag and spread a phi 8mm Dinima primary guide rope, and the Dinima primary guide rope flies from the vicinity of a shore crossing tower to the shore crossing tower; 2) The primary guide rope is used for pulling a plurality of subsequent guide ropes to each paying-off pulley crossing the ground wire of the tower, and the specification of the guide ropes is gradually lifted until the guide ropes are mainly pulled, and each main guide rope is used for pulling two traction ropes in a one-pulling-two mode; 3) The traction ropes are alternately shifted, namely, on a crossing tower on the opposite bank, the traction ropes of each phase are transferred to a target phase pulley from an initial position through a winch adjusting tension by utilizing a pulley group system comprising a double-door paying-off pulley, and sag and tension are monitored and controlled in real time in the shifting process; 4) And the pulling ropes are shifted in phase, namely, aiming at the four split wires, the in-phase pulling ropes are emptied through a double-chain hoist lifting system, and a single pulling rope is moved into another paying-off pulley by using the double-door paying-off pulley.
2. 2. The method for arranging and operating the guide rope of the power transmission line according to claim 1, wherein in the step 1), the unmanned aerial vehicle is a multi-rotor heavy-duty unmanned aerial vehicle with a load of more than or equal to 180kg and a wind resistance level of more than or equal to 6 levels, the flying speed of the unmanned aerial vehicle is dynamically regulated by a tension control system to control the tension of the primary guide rope in the unfolding process, and the flying path is controlled by a positioning navigation system.
3. 3. The method for arranging and operating the guide rope of the power transmission line according to claim 1, wherein in the step 3), the pulley system comprises a winch, a pulley group and a double-door paying-off pulley, wherein the pulley group is an 80 kN-level pulley group, and a phi 13mm steel wire rope running 4 times is adopted as a grinding rope; The operation of alternately shifting the traction ropes comprises the steps of tightening the grinding ropes connected with the traction ropes through a winch and a pulley block, enabling wheel grooves of the traction ropes and an original pulley to be free, then operating a double-door opening structure of the double-door opening paying-off pulley, moving the traction ropes out of the original pulley and guiding the traction ropes into the paying-off pulley of a target phase.
4. 4. An electric transmission line guide rope arrangement operation method according to claim 3, wherein in the step 4), when the hauling ropes are shifted in phase, the two hauling ropes in phase are synchronously tightened by using a double chain hoist to make the hauling ropes approach to the sky, and then the double door paying-off pulley is operated to shift one hauling rope into the other paying-off pulley in phase.
5. 5. An electric transmission line guide rope arrangement operation method according to any one of claims 1-4, wherein during the displacement of step 3) or 4), the sag of the haulage rope is monitored in real time by a laser range finder, the distance from the lowest point to the ground or an obstacle is ensured to be not less than a set value, and the tension during the displacement is monitored by a tension sensor, so that the maximum allowable value is ensured not to be exceeded.

Description

Power transmission line guide rope arrangement operation method Technical Field The invention relates to the technical field of power transmission line overhead construction, in particular to a power transmission line guide rope arrangement operation method. Background In the construction of ultra-high voltage/extra-high voltage large-span transmission lines (such as a large-river crossing of a Yangtze river, an international channel and the like), primary guide ropes (such as phi 8mm Dinima ropes) need to be unfolded first and then lifted to main guide ropes and guide wires step by step. The conventional technology has the following core problems: The navigation sealing dependency is strong, when a ship or a helicopter is adopted to spread the primary guide rope, long-time navigation sealing is often required (particularly for an international channel, the navigation sealing cost is high, the coordination difficulty is high), the ship throwing precision is low, and the helicopter is greatly limited by weather conditions; The multi-phase rope shifting efficiency is low, after only one primary guide rope is unfolded, the guide ropes and the guide ropes of the other phases are needed to be unfolded and unfolded on the ground for multiple times, manual switching on the tower is completed, the high-altitude workload is large (such as high risk of manual adjustment of a pulley block on a 370m high tower) and the safety risk is high (such as rope winding and high-altitude falling risk); Sag and clearance control are difficult, namely the displacement of the traction rope needs to strictly ensure that the lowest point of the sag has enough safety distance (more than or equal to 70 m) from the water surface or an obstacle when crossing a sensitive area, but the tension is easy to overrun (the maximum displacement load can reach 77 kN), and the traditional manual adjustment mode has insufficient precision; And the cooperative operation mode is lost, namely the unmanned aerial vehicle is unfolded and put and the upper shift of the high-altitude tower are independently implemented in stages, and a cooperative control strategy is lacked, so that the whole construction period is long. The existing unmanned aerial vehicle unfolding guide rope method is generally only suitable for short-distance scenes of unfolding relatively thin Dinima ropes such as phi 2mm and the like as primary guide ropes, cannot meet the unfolding requirements of large-span, long-distance and large-specification (such as phi 8mm or more) high-strength Dinima ropes, does not cover the key link of high-altitude displacement of multiphase traction ropes on a spanning tower, namely, how to sequentially transfer the traction ropes to positions of target phases (such as upper phases, lower phases and the like) through a special pulley block and tension control technology, and meets the requirements of clearance, stress and operation safety. Disclosure of Invention The technical problems to be solved and the technical task to be put forward in the invention are to perfect and improve the prior art scheme, and provide an operation method for arranging the guide rope of the power transmission line, so as to solve the problems of strong sealing dependency, low efficiency, high risk and the like in the prior art and realize the efficient, safe and accurate displacement of the multiphase traction rope. For this purpose, the present invention adopts the following technical scheme. An operation method for arranging a guide rope of an electric transmission line comprises the following steps: 1) The unmanned aerial vehicle spreads the primary guide rope, namely, the unmanned aerial vehicle is adopted to drag and spread a phi 8mm Dinima primary guide rope, and the Dinima primary guide rope flies from the vicinity of a shore crossing tower to the shore crossing tower; 2) One traction and two traction, namely, a plurality of subsequent guide ropes are pulled to each paying-off pulley crossing the ground wire of the tower through primary guide ropes, the specification of the guide ropes is gradually lifted until the guide ropes are mainly led, and each main guide rope pulls two traction ropes in a one traction and two traction mode; 3) The traction ropes are alternately shifted, namely, on a crossing tower on the opposite bank, the traction ropes of each phase are transferred to a target phase pulley from an initial position through a winch adjusting tension by utilizing a pulley group system comprising a double-door paying-off pulley, and sag and tension are monitored and controlled in real time in the shifting process; 4) And the pulling ropes are shifted in phase, namely, aiming at the four split wires, the in-phase pulling ropes are emptied through a double-chain hoist lifting system, and a single pulling rope is moved into another paying-off pulley by using the double-door paying-off pulley. Adopt unmanned aerial vehicle to directly expand and put thicker dinima