A method for laying out a transmission line across a line

Abstract

The present invention relates to a method for laying out a transmission line across a power line, which belongs to the field of power transmission technology and solves the problems of insufficient safety, poor economy and long laying time in the prior art of erecting a spanning frame scheme and a network sealing operation mode. The method for laying out a transmission line across a power line of the present invention comprises the following steps: A: assembling a bearing unit; B: adjusting the amount of water in a counterweight unit; C: filling helium into a first side airbag, a middle airbag and a second side airbag; D: detecting wind speed and wind direction; E: stabilizing the bearing unit in windy conditions; F: erecting a power line; G: recovering a lifting device and ending the erection of a power line. The laying method of the present invention utilizes a bearing unit suspended in the air to isolate a newly erected power line from an existing power line or surface facilities, and to perform spanning construction. The lifting device can complete the laying and laying, and has high safety and economy, simple laying operation and short laying time.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission, and in particular relates to a method for laying out a power transmission line across a power transmission line. Background Art

[0002] In the transmission line erection project, the line often needs to cross high-voltage power lines, high-speed railways, highways, etc., and it is necessary to carry out the construction of the spanning line. The spanning line construction technology can be divided into conventional steel pipe or bamboo spanning frames, suspension spanning, and mechanical spanning frames. The spanning frame is built to provide support for the insulation net to ensure that a safe distance is maintained between the erected line and the object being crossed; the suspension spanning hangs the protective insulation net on the cross arm or false cross arm of the iron tower, and uses the iron tower support to complete the sealing of the object being crossed. There is a great safety risk in erecting a spanning frame for 110kV and above lines under power, especially when the height of the line being crossed exceeds 30 meters, the difficulty of using the ground support to build the spanning frame will increase significantly, and the safety risk level will also increase. When adopting the bamboo spanning frame erection scheme, a large amount of materials (bamboo, wire, drill pile, insulation rope, safety net, wire, etc.) and manpower are required, the cost is high, and the erection time is long. For the spanning frame with a height of about 30 meters, the erection time is about one week. Therefore, the plan of erecting a crossing frame performed poorly in terms of safety, economy and progress.

[0003] In addition, the newly built iron towers and poles on both sides of the crossed lines can be used to set up crossbars for network sealing operations. However, before closing the network, the power lines must be shut down, the guide ropes must be deployed, and the load-bearing ropes must be pulled. When using poles to set up crossbars to seal the network, although the cost and construction period are reduced compared to setting up a spanning frame, the poles are relatively heavy and difficult to transport, set up, and adjust. At the same time, the required materials (poles, wire ropes), machinery (motorized winches), and manpower are still relatively large.

[0004] Whether it is a spanning frame or a suspended cable spanning closure, power outage or suspension is required to cooperate with the closure, and power outage is also required during the deployment of the conductor to reduce safety risks. This is because during the deployment of the conductor, if the traction rope breaks or other unexpected situations occur, the conductor will fall and impact the closure frame, which may damage the closure and cause an accident. The main reason is that the vertical distance between the closure and the conductor is large, and it is a soft cable. The impact force generated after the conductor breaks is very large, which can easily cause the closure to fail.

[0005] Therefore, there is an urgent need for a method for laying out transmission line crossings to solve the problems of poor safety and economy and long laying time in the prior art of erecting crossing frames and using newly built iron towers and poles on both sides of the crossed lines to set up cross bars for network closing operations. Summary of the invention

[0006] In view of the above analysis, the present invention aims to provide a method for laying out a transmission line across a transmission line to solve the problems of insufficient safety, poor economy and long deployment time in the prior art of erecting a crossing frame and closing the network.

[0007] The purpose of the present invention is mainly achieved through the following technical solutions:

[0008] A method for laying out a transmission line across a power transmission line, using a lifting device to erect and install the transmission line;

[0009] The lifting device comprises a bearing unit, a flight power unit and a counterweight unit, wherein the flight power unit is arranged on the bearing unit; the bearing unit comprises a first side airbag, a middle airbag and a second side airbag, wherein two ends of the middle airbag are respectively connected to the first side airbag and the second side airbag; the counterweight unit comprises a plurality of counterweight modules, wherein the plurality of counterweight modules are respectively arranged on two ends of the bearing unit; the flight power unit comprises a first flight power module, a second flight power module and a third flight power module, wherein the first flight power module, the second flight power module and the third flight power module are respectively arranged on two ends of the bearing unit;

[0010] The bearing unit includes a first side wall and a second side wall, the first side wall is a side wall between the first flight power module and the second flight power module, and the second side wall is a side wall between the second flight power module and the third flight power module;

[0011] The laying-out method comprises the following steps:

[0012] A: Assemble the load-bearing unit;

[0013] B: Adjust the water volume of the counterweight unit;

[0014] C: The first side airbag, the middle airbag and the second side airbag are filled with helium;

[0015] D: Detect wind speed and direction;

[0016] Use wind speed sensor to detect wind speed V on the surface of the carrier unit S , if the wind speed V S ≥V0, go to step E; if wind speed V S <V0, execute step F; V0 is the minimum wind speed to push the bearing unit, V0 and V S The unit is m / s;

[0017] E: Stable load-bearing unit in windy conditions;

[0018] The angle between the wind direction and the first side wall is α; there are two cases of α, namely, α= 90° and α< 90°;

[0019] Case 1: The wind load is applied vertically to the first side wall, the flight power unit only turns on the first flight power module and the second flight power module, the main control module controls the driver to turn in the upwind direction, and generates power to drive the lifting device to move, so that the carrying unit remains stationary with the ground;

[0020] Case 2: The wind load is applied to the first side wall and the second side wall, the flight power unit turns on the first flight power module, the second flight power module and the third flight power module, the main control module controls the driver to turn in the upwind direction, and generates power to drive the lifting device to move, so that the bearing unit remains stationary with the ground;

[0021] F: erection of transmission lines;

[0022] G: Retrieve the lifting device and complete the transmission line installation.

[0023] Furthermore, the step B: adjusting the water volume of the counterweight unit includes: the total mass of the water in the counterweight unit is greater than the mass of the transmission line section to be installed, so that the bearing unit reserves the buoyancy to bear the transmission line section to be installed.

[0024] Furthermore, the step C: filling the first side airbag, the middle airbag and the second side airbag with helium includes: the amount of helium filled is sufficient to make the carrying unit suspended in the air.

[0025] Furthermore, in the step E: stabilizing the bearing unit in the case of wind includes performing the following calculations:

[0026] The calculation formula for wind pressure is:

[0027] P=0.5ρV S 2 ;

[0028] Where P is wind pressure, unit is N / m 2 ; V S is the wind speed, in m / s; ρ is the air density, in kg / m³;

[0029] The calculation formula for wind load is:

[0030] P W =PA= 0.5ρ V S 2 A ;

[0031] Among them, P W is the wind load acting on the load-bearing unit, in N; A is the equivalent windward area of ​​the load-bearing unit perpendicular to the wind direction, in m 2; The carrying unit includes a first side wall and a second side wall, the first side wall is the side wall between the first flight power module and the second flight power module, and the second side wall is the side wall between the second flight power module and the third flight power module; A1 is the area of ​​the first side wall, and A2 is the area of ​​the second side wall.

[0032] Furthermore, the situation 1 includes:

[0033] A=A 1 ；

[0034] F 1 =F 2 =P W / 2 ;

[0035] Among them, F1 is the driving force provided by the first flight power module, and F2 is the driving force provided by the second flight power module, and the unit is N.

[0036] Furthermore, the situation 1 includes:

[0037] A=A 1 ；

[0038] F 1 =F 2 =P W / 2cos(90°-β) ;

[0039] Among them, F1 is the driving force provided by the first flight power module, F2 is the driving force provided by the second flight power module, and the unit is N; β is the angle between the driving force and the wind direction.

[0040] Furthermore, the second situation includes:

[0041] A=A 1 Sinα+A 2 Cosα;

[0042] F 1 =F 2 =F 3 =P W / 3 ;

[0043] Among them, F1 is the driving force provided by the first flight power module, F2 is the driving force provided by the second flight power module, and F3 is the driving force provided by the third flight power module, and the unit is N.

[0044] Furthermore, the second situation includes:

[0045] A=A 1 Sinα+A 2 Cosα;

[0046] F 1 / cosβ=F 2 =F 3 / cosβ=P W / 3；

[0047] F 1 =F 2 =P W cosβ / 3;

[0048] Among them, F1 is the driving force provided by the first flight power module, F2 is the driving force provided by the second flight power module, and F3 is the driving force provided by the third flight power module, and the unit is N; β is the angle between the driving force and the wind direction.

[0049] Furthermore, 0°≤β≤10°.

[0050] Furthermore, the step F: erecting the transmission line includes: placing the transmission line on the sliding unit, and dragging the transmission line toward the target tower; during the process of dragging the transmission line toward the target tower, the counterweight unit drains water to keep the load-bearing unit in a suspended state unchanged.

[0051] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0052] (1) The laying method of the present invention utilizes the carrying unit suspended in the air to isolate the newly erected transmission line from the existing transmission line or surface facilities to carry out the crossing construction. The lifting device can complete the laying and laying, with high safety and economy, simple laying operation and short laying time.

[0053] (2) The line-laying method of the present invention can drive the bearing unit, so that the lifting device moves autonomously and advances to the construction airspace, and can send a control signal to the flight power module according to the wind direction and wind speed. By controlling the switch and rotation speed of the four flight power modules respectively, the bearing unit is provided with a driving force in the direction of the wind, thereby preventing the bearing unit from changing its position and affecting the transmission line erection construction, so that the bearing unit can carry out the transmission line erection work under windy weather conditions, ensuring the smooth progress of the erection work;

[0054] (3) The line-laying method of the present invention can control the power output direction of the first flight power module and the second flight power module or the first flight power module and the third flight power module to have an angle β with the wind direction, so that the first side wall and / or the second side wall remain in their original state, thereby avoiding the reduction of the volume of the bearing unit and the decrease of the lift, which is more conducive to the erection operation of the transmission line;

[0055] (4) The main control module of the present invention can inject water into the water tank through the water channel, and can control the water pumps of the four counterweight modules to distribute the water in the water tanks of the four counterweight modules. By adjusting the water storage volume of the four counterweight modules, the posture of the bearing unit is adjusted and the floating posture is maintained, which facilitates the installation of the transmission line;

[0056] (5) The first connecting unit of the present invention can be quickly connected to the first connecting seat, thereby connecting the first side airbag with the middle airbag or the middle airbag with the second side airbag; the first plug-in block can be connected to the second plug-in block, and connect the first electrical interface with the second electrical interface, and connect the first water channel interface with the second water channel interface; the first locking tooth can be connected to the second locking tooth, thereby preventing the connector sleeve from being separated from the second plug-in block, and further preventing the second connecting unit from being separated from the second connecting seat, and quickly connecting the first side airbag, the middle airbag and the second side airbag, while connecting the circuit and the water channel.

[0057] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can become obvious from the description or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0059] Figure 1 It is a schematic diagram of the process of the wire laying method of the present invention;

[0060] Figure 2 It is a schematic diagram of the overall structure of the lifting device of the present invention;

[0061] Figure 3 It is the overall structural diagram of the flight power unit;

[0062] Figure 4 This is a schematic diagram of driving force distribution of the flight power unit in case 1 of embodiment 1;

[0063] Figure 5 This is a schematic diagram of driving force distribution of the flight power unit in case 2 of embodiment 1;

[0064] Figure 6 This is a schematic diagram of driving force distribution of the flight power unit in case 1 of embodiment 2;

[0065] Figure 7 This is a schematic diagram of driving force distribution of the flight power unit in case 2 of embodiment 2;

[0066] Figure 8 It is a schematic diagram of the overall structure of the intermediate airbag;

[0067] Fig. 9 is a schematic diagram of the exploded structure of the first connecting unit and the first connecting socket;

[0068] Fig.10 It is a schematic diagram of the exploded structure of the second connecting unit and the second connecting socket.

[0069] Reference numerals:

[0070] 1-carrying unit; 2-flight power unit; 3-control unit; 4-sliding unit; 5-counterweight unit; 6-first connecting unit; 7-first connecting seat; 8-second connecting unit; 9-second connecting seat; 11-airbag body; 12-airbag guard wall; 21-first flight power module; 22-second flight power module; 23-third flight power module; 24-fourth flight power module; 31-main control module; 32-connection module; 61-support rod; 62-locking column; 63-pin; 71-hook; 72-hook shaft; 73-tenon; 74-tenon spring; 81-first plug block; 82-plug sleeve; 83-annular flange; 84-first locking tooth; 91-second plug block; 92-second locking tooth; 93-locking tooth groove. DETAILED DESCRIPTION

[0071] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0072] Example 1

[0073] A specific embodiment of the present invention, as Figure 1As shown, a method for laying out a transmission line across a power line (hereinafter referred to as the laying out method) is disclosed, which uses a floating line lifting device to erect the transmission line, including the following steps:

[0074] Step 1: Assemble the load-bearing unit 1;

[0075] Preferably, the carrying unit 1 is assembled on one side of the working area; during the assembly process, the carrying unit 1 is parallel to the high-voltage power line, high-speed railway, and highway in the length direction;

[0076] The following steps are included:

[0077] Sub-step 11: Install the flight power unit 2 and the counterweight unit 5 on the second side airbag

[0078] like Figure 3 As shown, a second flight power module 22 and a third flight power module 23 are respectively installed at both ends of the second side airbag; the second flight power module 22 and the third flight power module 23 are both connected to the circuit;

[0079] Preferably, a second connecting seat 9 is provided on the second flight power module 22 and the third flight power module 23, and a second connecting unit 8 is provided on the outer wall of the second side airbag;

[0080] Two water tanks of the counterweight unit 5 are installed at both ends of the second side airbag respectively; the water pump on the water tank is connected to the circuit through the second flight power module 22 or the third flight power module 23, and the water tank is connected to the waterway through the second flight power module 22 or the third flight power module 23;

[0081] Fill the water tank with water to prevent the second airbag from floating away after inflation; fill the second airbag with helium.

[0082] Step 12: Install the center airbag

[0083] Connect the middle airbag to the second side airbag;

[0084] Preferably, there are multiple intermediate airbags. By changing the number of intermediate airbags, the total length of the carrying unit 1 can be changed. The carrying unit 1 that can be modularly assembled can be disassembled for easy transportation and storage, so that the wire laying method of this embodiment can adapt to the installation of transmission lines with various spans.

[0085] Preferably, the middle airbag and the second side airbag are connected by the first connecting unit 6 and the first connecting seat 7; the water circuit and the circuit of the middle airbag and the second side airbag are connected by the second connecting unit 8 and the second connecting seat 9;

[0086] Continuously fill the water tank with water to prevent the middle airbag and the second side airbag from floating away after inflation; fill the middle airbag with helium.

[0087] Sub-step 13: Install the flight power unit 2 and the counterweight unit 5 on the first side airbag

[0088] A first flight power module 21 and a fourth flight power module 24 are respectively installed at both ends of the first side airbag; the first flight power module 21 and the fourth flight power module 24 are both connected to the circuit;

[0089] Preferably, the first flight power module 21 and the fourth flight power module 24 are both provided with a second connection unit 8, and the outer wall of the first side airbag is provided with a second connection seat 9;

[0090] Two water tanks of the counterweight unit 5 are respectively installed at both ends of the first side airbag; the water pump on the water tank is connected to the circuit through the first flight power module 21 or the fourth flight power module 24, and the water tank is connected to the waterway through the first flight power module 21 or the fourth flight power module 24;

[0091] Fill the water tank with water to prevent the first side airbag from floating away after inflation; fill the first side airbag with helium.

[0092] Step 14: Connect the first side airbag to the middle airbag

[0093] Preferably, the first side airbag and the middle airbag are connected by the first connecting unit 6 and the first connecting seat 7; and the water circuit and the electric circuit of the first side airbag and the middle airbag are connected by the second connecting unit 8 and the second connecting seat 9.

[0094] Step 2: Adjust the water volume of the counterweight unit 5;

[0095] Preferably, the total mass of water in the counterweight unit 5 is greater than the mass of the transmission line section to be installed, so that the carrying unit 1 reserves the buoyancy for carrying the transmission line section to be installed.

[0096] Step 3: Inflate the first side airbag, the middle airbag and the second side airbag with helium;

[0097] Preferably, the amount of helium filled is just enough to enable the carrying unit 1 to float in the air.

[0098] Step 4: Leveling the load-bearing unit 1;

[0099] Distribute the water in the four water tanks of the counterweight unit 5 so that the carrying unit 1 can be parallel to the ground;

[0100] Preferably, the carrying unit 1 is leveled visually.

[0101] Step 5: Fly the carrier unit 1 to the working area;

[0102] The flight power unit 2 rotates to generate thrust in the direction opposite to the forward direction, so that the carrying unit 1 flies to the working area;

[0103] Preferably, if Figure 3 As shown, in order to prevent the flight power unit 2 from squeezing the carrying unit 1 and causing deformation of the carrying unit 1 when the carrying unit 1 is flying, the control unit 3 only turns on the fourth flight power module 24, and the fourth flight power module 24 rotates to be perpendicular to the first side wall and pushes the carrying unit 1 toward the first side wall. Due to the pulling of the connection module 32, the carrying unit 1 can rotate around the third flight power module 23, and finally the carrying unit 1 crosses the high-voltage power line, high-speed railway, and highway;

[0104] After the carrying unit 1 is in place, the flight power unit 2 is turned off.

[0105] Step 6: Detect wind speed;

[0106] According to the provisions of the "Safety Work Regulations for Power Construction", high-altitude operations are not allowed in winds of level 6 or above. Therefore, the permissible meteorological conditions for the design of the lifting device in this embodiment are: maximum working wind speed of 13.8m / s (10m above the ground, 10min average wind speed).

[0107] The wind speed sensor is used to detect the wind speed V in the airspace where the carrying unit 1 is located. S , if the wind speed V S ≥V0, go to step 7; if wind speed V S <V0, go to step 8; V0 is the minimum wind speed to push the carrying unit 1, V0 and V S The unit is m / s;

[0108] Preferably, V0=1m / s;

[0109] Preferably, the wind speed sensor detects the wind speed and wind direction once per unit time t;

[0110] Preferably, 10s≤t≤30s.

[0111] Step 7: Stabilize the load-bearing unit 1 in windy conditions;

[0112] The wind load calculation of this embodiment is based on the basic design parameters and requirements of the "Crane Design Code" (GB / T3811):

[0113] The calculation formula for wind pressure is:

[0114] P=0.5ρV S 2 ;

[0115] Where P is wind pressure, unit is N / m 2 ; V Sis the wind speed, in m / s; ρ is the air density, in kg / m³;

[0116] The calculation formula for wind load is:

[0117] P W =PA

[0118] Among them, P W is the wind load acting on the load-bearing unit 1, in N; A is the equivalent windward area of ​​the load-bearing unit 1 perpendicular to the wind direction, in m 2 The carrying unit 1 includes a first side wall and a second side wall, wherein the first side wall is the side wall between the first flight power module 21 and the second flight power module 22, and the second side wall is the side wall between the second flight power module 22 and the third flight power module 23. A1 is the area of ​​the first side wall, and A2 is the area of ​​the second side wall.

[0119] The angle between the wind direction and the first side wall is α; there are two cases of α, namely α=90° and α<90°.

[0120] Case 1: If Figure 4 As shown, the wind load is applied vertically to the first side wall, the flight power unit 2 only turns on the first flight power module 21 and the second flight power module 22, the main control module 31 controls the driver to turn in the upwind direction, and generates power to drive the lifting device of this embodiment to move;

[0121] A=A 1 ;

[0122] F 1 =F 2 =P W / 2=PA 1 / 2= 0.5ρ V S 2 A 1 / 2 ;

[0123] Wherein, F1 is the driving force provided by the first flight power module 21, and F2 is the driving force provided by the second flight power module 22, both in N;

[0124] Case 2: If Figure 5As shown, the wind load is applied to the first side wall and the second side wall, the flight power unit 2 only turns on the first flight power module 21, the second flight power module 22 and the third flight power module 23, and the main control module 31 controls the driver to turn in the upwind direction and generates power to drive the lifting device of this embodiment to move;

[0125] Preferably, the driving force calculation method of the first flight power module 21, the second flight power module 22 and the third flight power module 23 is:

[0126] A=A 1 Sinα+A 2 Cosα ;

[0127] F 1 =F 2 =F 3 =P W / 3= 0.5ρ V S 2 (A 1 Sinα+A 2 Cosα) / 3 ;

[0128] Wherein, F1 is the driving force provided by the first flight power module 21, F2 is the driving force provided by the second flight power module 22, and F3 is the driving force provided by the third flight power module 23, and the unit is N;

[0129] Step 8: Build transmission lines;

[0130] Placing the transmission line on the sliding unit 4 and dragging the transmission line toward the target tower;

[0131] Preferably, during the process of dragging the transmission line toward the target tower, the counterweight unit 5 drains water to keep the load-bearing unit 1 in a suspended state;

[0132] Preferably, the mass of water discharged by the counterweight unit 5 per unit time is equal to the mass of the power transmission line on the sliding unit 4 .

[0133] Step 9: Recover the lifting device and complete the installation of the transmission line;

[0134] The flight power unit 2 rotates to generate thrust in the direction opposite to the forward direction, so that the carrying unit 1 flies away from the working area;

[0135] Preferably, in order to prevent the flight power unit 2 from squeezing the carrying unit 1 and causing deformation of the carrying unit 1 when the carrying unit 1 is flying, the control unit 3 only turns on the first flight power module 21, and the first flight power module 21 rotates to be perpendicular to the first side wall and pushes the carrying unit 1 toward the fourth flight power module 24. Due to the pulling of the connecting module 32, the carrying unit 1 can rotate around the third flight power module 23, and finally the carrying unit 1 is parallel to the high-voltage power line, high-speed railway, and highway.

[0136] Water is poured into the counterweight unit 5 to increase the gravity on the load-bearing unit 1, so that the load-bearing unit 1 descends;

[0137] Exhausting the helium in the first side airbag, the middle airbag, and the second side airbag;

[0138] Preferably, helium is relatively expensive and can be recycled by the manufacturer. The overall equipment cost can be reduced by collecting and releasing helium on board the vehicle. At the same time, the impact of helium on the atmospheric environment can also be reduced. The inflation and gas recovery time is theoretically controlled within 2 hours.

[0139] Drain the water in the counterweight unit 5;

[0140] The first side airbag, the middle airbag and the second side airbag are separated and stored;

[0141] Complete the transmission line installation.

[0142] Compared with the prior art, the line-laying method of this embodiment utilizes the carrying unit 1 suspended in the air to isolate the newly erected transmission line from the existing transmission line or surface facilities to carry out spanning construction. The flying power unit 2 can drive the carrying unit 1 and enable the carrying unit 1 to carry out the erection of the transmission line under windy weather conditions, ensuring the smooth progress of the erection work.

[0143] Example 2

[0144] Another specific embodiment of the present invention, as Figure 4 As shown, step 7 of the line-releasing method of embodiment 1 is improved to improve the output direction of the power of the flight power unit 2, to prevent the wind from squeezing the carrying unit 1, and to avoid deformation of the carrying unit 1, thereby causing the volume to decrease and the lift to decrease.

[0145] For situation 1: Figure 6 As shown, the wind load is applied vertically to the first side wall, the flight power unit 2 only turns on the first flight power module 21 and the second flight power module 22, the main control module 31 controls the driver to turn in the upwind direction, and generates power to drive the lifting device of this embodiment to move;

[0146] Preferably, there is an angle β between the power output directions of the first flight power module 21 and the second flight power module 22 and the wind direction, and the power of the first flight power module 21 and the second flight power module 22 both have a component force that stretches the first side wall to both sides, so that the first side wall remains in its original state, avoiding the volume of the carrying unit 1 from becoming smaller and the lift from decreasing.

[0147] The calculation formula of the driving force of the first flight power module 21 and the second flight power module 22 is:

[0148] A=A 1 ;

[0149] F 1 =F 2 =P W / 2cos(90°-β)= 0.5ρ V S 2 A 1 / 2cos(90°-β) ;

[0150] Wherein, F1 is the driving force provided by the first flight power module 21, and F2 is the driving force provided by the second flight power module 22, both in N;

[0151] For situation 2: Figure 7 As shown, the wind load is applied to the first side wall and the second side wall, the flight power unit 2 only turns on the first flight power module 21, the second flight power module 22 and the third flight power module 23, and the main control module 31 controls the driver to turn in the upwind direction and generates power to drive the lifting device of this embodiment to move;

[0152] Preferably, there is an angle β between the power output directions of the first flight power module 21 and the third flight power module 23 and the wind direction; the power of the first flight power module 21 has a component force that stretches the first side wall away from the second flight power module 22, so that the first side wall remains in its original state; the power of the third flight power module 23 has a component force that stretches the second side wall away from the second flight power module 22, so that the second side wall remains in its original state, thereby preventing the volume of the carrying unit 1 from becoming smaller and the lift from decreasing.

[0153] The calculation formula of the driving force of the first flight power module 21, the second flight power module 22 and the third flight power module 23 is:

[0154] A=A 1 Sinα+A 2 Cosα ;

[0155] F 1 / cosβ=F 2 =F 3 / cosβ=P W / 3=0.5ρV S 2 (A 1 Sinα+A 2 Cosα) / 3 ;

[0156] F 1 =F 2 =0.5ρV S 2 (A 1 Sinα+A 2 Cosα)cosβ / 3 ;

[0157] Among them, F1 is the driving force provided by the first flight power module 21, F2 is the driving force provided by the second flight power module 22, and F3 is the driving force provided by the third flight power module 23, and the unit is N.

[0158] Preferably, 0°≤β≤10°, specifically, β=5°.

[0159] Compared with Example 1, there is an angle β between the power output direction of the first flight power module 21 and the second flight power module 22 or the first flight power module 21 and the third flight power module 23 and the wind direction, so that the first side wall and / or the second side wall remains in its original state, avoiding the reduction in the volume of the carrying unit 1 and the decrease in lift, which is more conducive to the installation operation of the transmission line.

[0160] Example 3

[0161] Another specific embodiment of the present invention, as Figure 2 As shown, a floating line lifting device (hereinafter referred to as the lifting device) used in Example 1 and Example 2 is disclosed, including a bearing unit 1, a flight power unit 2 and a control unit 3. The flight power unit 2 is arranged on the bearing unit 1, and the control unit 3 is connected to the flight power unit 2. The bearing unit 1 can float in the air to isolate the newly erected transmission line from the existing transmission line or surface facilities to perform crossing construction. The control unit 3 is used to control the flight power unit 2, and the flight power unit 2 is used to drive the bearing unit 1 to enable the bearing unit 1 to move and remain in the construction airspace.

[0162] Preferably, the bearing unit 1 includes a skin and helium, and the skin can be filled with helium, so that the bearing unit 1 can be suspended in the air. The bearing unit 1 is a concave-shaped bearing unit, and the bearing unit 1 includes a bearing body and a guard wall, and the guard wall is arranged at both ends of the bearing body; a recessed portion is formed between the bearing body and the guard wall, and the recessed portion can support the power transmission line, and the guard wall is used to prevent the power transmission line from escaping from the recessed portion and falling under the bearing unit 1. When laying the line, it is only necessary to fill the bearing unit 1 of the lifting device of this embodiment with helium, and the lifting device can complete the deployment and layout, with high safety and economy, simple operation, and short deployment time.

[0163] Preferably, the control unit 3 includes a main control module 31, a connection module 32 and a wind speed sensor (not shown in the figure). The wind speed sensor is arranged on the carrying unit 1. The wind speed sensor and the flight power unit 2 are both connected to the main control module 31 through the connection module 32. The wind speed sensor can sense the wind direction and wind speed on the surface of the carrying unit 1, and transmit them to the main control module 31 through the connection module 32. The connection module 32 includes a circuit and a waterway. When the wind blows the lifting device of this embodiment, the main control module 31 can send a control signal to the flight power unit 2 according to the wind direction and wind speed, and provide the carrying unit 1 with a driving force in the direction of the wind by controlling the switch and speed of the flight power unit 2, so as to keep the carrying unit 1 still and prevent the carrying unit 1 from changing its position and affecting the construction of the transmission line.

[0164] Preferably, if Figure 3 As shown, the flight power unit 2 includes a first flight power module 21, a second flight power module 22, a third flight power module 23 and a fourth flight power module 24, which are respectively arranged on the skins at both ends of the carrying unit 1, and the first flight power module 21, the second flight power module 22, the third flight power module 23 and the fourth flight power module 24 have the same structure. The first flight power module 21 includes a motor and a driver, the motor is used to drive the driver to rotate and generate power to drive the lifting device of this embodiment to move, and the driver is a blade driver or a ducted fan driver. The motor is connected to the main control module 31. The flight power unit 2 can make the lifting device of this embodiment move autonomously, so that the carrying unit 1 moves to the construction airspace.

[0165] Preferably, if Figure 2 As shown, the lifting device of this embodiment further includes a sliding unit 4, which is arranged on the skin. The sliding unit 4 includes a plurality of rotating rods, which are rotatably connected to the retaining wall, and the rotating rods can rotate and are used to support the transmission line to prevent the transmission line and the bearing unit 1 from generating sliding friction, thereby protecting the transmission line and the bearing unit 1 and facilitating the installation of the transmission line.

[0166] Preferably, the lifting device of this embodiment further includes a counterweight unit 5, which includes four counterweight modules, and the four counterweight modules are respectively arranged on the skins at both ends of the load-bearing unit 1. The counterweight module includes a water tank and a water pump, and the water tanks of the four counterweight modules are interconnected through a water channel, and the water pumps of the four counterweight modules are connected to the main control module 31 through a circuit. The main control module 31 can fill water into the water tank through the water channel, and can control the water pumps of the four counterweight modules through the circuit to distribute the water in the water tanks of the four counterweight modules. By adjusting the water storage volume of the four counterweight modules, the posture of the load-bearing unit 1 of this embodiment is adjusted and kept in a floating posture, which is convenient for the installation of transmission line.

[0167] According to calculations, the lift that helium can provide is: 1 cubic meter of helium can provide about 10N of lift in the atmosphere.

[0168] For a newly built 500kV line crossing a 220kV or lower operating line, the size of the load-bearing unit 1 can be designed to be 35×6×6 meters, a total of 1260 cubic meters. For a line crossing 220kV or higher, the size of the load-bearing unit 1 can be designed to be about 55×5×5 meters, a total of 1375 cubic meters. The specific size can be adjusted according to needs. The load of the load-bearing unit 1 is about 10kN, and it mainly plays a bearing role. In the broken state, the deadweight of the conductor is not entirely borne by the floating device, and the specific calculation is based on the actual working conditions. If the conductor load ratio is large, it can be deployed in batches; 630 conductors are deployed across a span of 300 meters, two conductors are pulled at a time, and the full load after the line is dropped is 1.26 tons; 1250 conductors are deployed across a span of 300 meters, one conductor is pulled at a time, and the full load after the line is dropped is 1.26 tons. The buoyancy of the load-bearing unit 1 meets the engineering requirements. If the span exceeds 300 meters, the length, width and height of the load-bearing unit 1 can be increased to increase the volume to meet the buoyancy requirements.

[0169] Preferably, the bearing unit 1 includes a first side airbag, a middle airbag, and a second side airbag (not shown in the figure), the two ends of the middle airbag are respectively connected to the first side airbag and the second side airbag, and the first side airbag, the middle airbag and the second side airbag have the same structure. There are multiple middle airbags, and the total length of the bearing unit 1 can be changed by changing the number of middle airbags. The modular bearing unit 1 can be disassembled for easy transportation and storage, so that the lifting device of this embodiment can adapt to the installation of transmission lines of various spans.

[0170] Preferably, if Figure 8 As shown, the first side airbag includes an airbag body 11 and an airbag guard wall 12. The airbag guard wall 12 is arranged on the airbag body 11. Multiple airbag bodies 11 are connected to form a bearing body of the bearing unit 1, and multiple airbag guard walls 12 are connected to form a guard wall of the bearing unit 1.

[0171] Preferably, if Figure 8As shown, in order to quickly connect the first side airbag, the middle airbag and the second side airbag, the lifting device of this embodiment further includes a first connecting unit 6 and a first connecting seat 7. The first connecting unit 6 can be plugged into the first connecting seat 7, so that the first side airbag, the middle airbag and the second side airbag can be quickly connected. The first side airbag, the middle airbag and the second side airbag are all provided with electric wires and water pipes, and the electric wires of each airbag can be interconnected to form a circuit; the water pipes of each airbag can be interconnected to form a waterway.

[0172] Preferably, if Fig. 9 As shown, the first connection unit 6 includes a support rod 61 and a locking column 62, one end of the support rod 61 is fixedly connected to the side wall of the first side airbag or the side wall of the middle airbag, and the locking column 62 is connected to the other end of the support rod 61. The first connection seat 7 includes a hook 71 and a hook shaft 72, the middle airbag and the second side airbag include a first connection seat groove (not shown in the figure), and the hook 71 is rotatably connected to the first connection seat groove through the hook shaft 72.

[0173] The hook 71 includes a pushing portion and a hooking portion. When the first side airbag is connected to the middle airbag or the middle airbag is connected to the second side airbag, the first connecting unit 6 is inserted into the first connecting seat groove, the locking column 62 is first connected to the pushing portion, and the hook 71 is pushed to rotate along the hook shaft 72, and the hooking portion is then connected to the locking column 62, connecting the first connecting unit 6 to the first connecting seat 7, thereby connecting the first side airbag to the middle airbag or the middle airbag to the second side airbag.

[0174] Preferably, in order to lock the hook 71, a first slot is provided on the push portion, and a second slot is provided on the hook portion, and the first slot and the second slot have the same structure. The first connection seat 7 also includes a tenon 73, which is a columnar tenon, and is arranged on the first connection seat groove. The tenon 73 includes a hook groove and a locking protrusion, and the locking protrusion is arranged on the groove. The hook 71 can be connected with the hook groove and rotate in the groove; the first groove and the second groove both include an unlocking slope and a locking plane, and the locking protrusion can be connected with the locking plane to prevent the hook 71 from rotating toward the push portion; when the hook 71 rotates toward the hook portion, the unlocking slope can be connected with the locking protrusion and push the locking protrusion away, and the hook 71 can continue to rotate toward the hook portion. The locking protrusion is connected to the first slot, and the hook 71 is in a waiting state; the locking protrusion is connected to the second slot, and the hook 71 is connected to the locking column 62 and cannot be separated from the locking column 62.

[0175] Preferably, the first connecting seat 7 also includes a tenon spring 74, one end of the tenon spring 74 is connected to the tenon 73, and the other end of the tenon spring 74 is connected to the first connecting seat groove, and the tenon spring 74 is used to push the tenon 73 so that the locking protrusion remains connected to the hook 71.

[0176] In some optional embodiments, the first connection unit 6 further includes a pin 63, the pin 63 is connected to the support rod 61, and the locking column 62 is rotatably connected to the pin 63. When the locking column 62 is connected to the push portion and pushes the hook 71 to rotate along the hook axis 72, the locking column 62 can rotate around the pin 63, and the friction between the locking column 62 and the hook 71 is rotational friction, which reduces the wear of the locking column 62 and the hook 71 and improves the service life of the first connection unit 6 and the first connection seat 7.

[0177] Preferably, if Figure 8 and Fig.10 As shown, in order to connect the wires and water pipes of the first side airbag, the middle airbag and the second side airbag, the lifting device of this embodiment also includes a second connecting unit 8 and a second connecting seat 9. The second connecting unit 8 can be plugged into the second connecting seat 9, so that the circuit and the water can be quickly connected.

[0178] Preferably, the second connecting unit 8 includes a first plug-in block 81 and a plug-in sleeve 82. A plurality of first plug-in blocks 81 are respectively arranged on the first side airbag and the middle airbag. The first plug-in block 81 is a cylindrical plug-in block. The first plug-in block 81 includes an annular groove, a first electrical interface and a first water channel interface. The plug-in sleeve 82 is an annular plug-in sleeve. An annular flange 83 is provided on the plug-in sleeve 82. The annular flange 83 can be connected to the annular groove, so that the plug-in sleeve 82 can rotate on the first plug-in block 81, and the plug-in sleeve 82 cannot be separated from the first plug-in block 81.

[0179] Preferably, the plug-in sleeve 82 is also provided with a first locking tooth 84. The second connection seat 9 includes a second plug-in block 91, and a plurality of second plug-in blocks 91 are respectively arranged on the middle airbag and the second side airbag. The second plug-in block 91 includes a second electrical interface and a second water channel interface. The first electrical interface can be connected to the second electrical interface, and the first water channel interface can be connected to the second water channel interface. The second connection seat 9 also includes a second locking tooth 92 and a locking tooth groove 93. A plurality of second locking teeth 92 are arranged on the outer wall of the second plug-in block 91, and a locking tooth groove 93 is formed between the plurality of second locking teeth 92. The first plug-in block 81 can be connected with the second plug-in block 91, and the first electrical interface is connected with the second electrical interface, and the first water channel interface is connected with the second water channel interface, and the first locking tooth 84 can be connected with the locking tooth groove 93; the plug-in sleeve 82 is rotated, and the first locking tooth 84 can be connected with the second locking tooth 92, so as to prevent the plug-in sleeve 82 from being separated from the second plug-in block 91, and further prevent the second connection unit 8 from being separated from the second connection seat 9.

[0180] Preferably, the rotating rod of the sliding unit 4 is rotatably connected to the airbag guard wall 12. The two flight power modules of the flight power unit 2 are respectively arranged at the two ends of the first side airbag, and the other two flight power modules of the flight power unit 2 are respectively arranged at the two ends of the second side airbag, and the four flight power modules of the flight power unit 2 are connected through the circuit. The two counterweight modules of the counterweight unit 5 are respectively arranged at the two ends of the first side airbag, and the other two counterweight modules of the counterweight unit 5 are respectively arranged at the two ends of the second side airbag, and the four counterweight modules of the counterweight unit 5 are connected through the circuit and the waterway.

[0181] Compared with the prior art scheme of erecting a spanning frame and using newly built iron towers and holding poles on both sides of the spanned line to set up crossbars for network sealing operations, it is only necessary to fill the bearing unit 1 of the lifting device of this embodiment with helium, and the lifting device can complete the deployment and deployment, with high safety and economy, simple deployment operation and short deployment time; the flight power unit 2 can enable the lifting device of this embodiment to move autonomously, so that the bearing unit 1 moves to the construction airspace, and the main control module 31 can send a control signal to the flight power module according to the wind direction and wind speed, and provide the bearing unit 1 with a driving force in the direction of the wind by controlling the switches and speeds of the four flight power modules respectively, so as to keep the bearing unit 1 stationary and prevent the bearing unit 1 from changing its position and affecting the erection of the transmission line; the main control module 31 can fill the water tank with water through the waterway, and can control the water pumps of the four counterweight modules to distribute the water in the water tanks of the four counterweight modules, and adjust the posture of the bearing unit 1 of this embodiment by adjusting the water storage capacity of the four counterweight modules, and keep the floating posture, so as to facilitate the erection of the transmission line.

[0182] The bearing unit 1 of the lifting device of this embodiment includes a first side airbag, a middle airbag and a second side airbag. There are multiple middle airbags. By changing the number of middle airbags, the total length of the bearing unit 1 can be changed. The modular bearing unit 1 can be disassembled for easy transportation and storage, so that the lifting device of this embodiment can adapt to the installation of power transmission lines with various spans. The first connecting unit 6 is inserted into the first connecting seat groove, and the locking column 62 pushes the hook 71 to rotate along the hook shaft 72, and the hook part is immediately connected to the locking column 62, which can quickly connect the first connecting unit 6 with the first connecting seat groove. The first connecting seat 7 is connected, thereby connecting the first side airbag with the middle airbag or the middle airbag with the second side airbag; the first plug-in block 81 can be connected with the second plug-in block 91, and connect the first electrical interface with the second electrical interface, and connect the first water channel interface with the second water channel interface; the first locking tooth 84 can be connected with the second locking tooth 92, thereby preventing the plug-in sleeve 82 from detaching from the second plug-in block 91, and further preventing the second connecting unit 8 from detaching from the second connecting seat 9, quickly connecting the first side airbag, the middle airbag and the second side airbag, while connecting the circuit and the water channel.

[0183] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for laying out a transmission line across a power line, characterized in that: A lifting device is used to erect and install the transmission line; The lifting device comprises a bearing unit (1), a flight power unit (2) and a counterweight unit (5), wherein the flight power unit (2) is arranged on the bearing unit (1); the bearing unit (1) comprises a first side airbag, a middle airbag and a second side airbag, wherein two ends of the middle airbag are respectively connected to the first side airbag and the second side airbag; the counterweight unit (5) comprises a plurality of counterweight modules, wherein the plurality of counterweight modules are respectively arranged at two ends of the bearing unit (1); the flight power unit (2) comprises a first flight power module (21), a second flight power module (22) and a third flight power module (23), wherein the first flight power module (21), the second flight power module (22) and the third flight power module (23) are respectively arranged at two ends of the bearing unit (1); The carrying unit (1) comprises a first side wall and a second side wall, the first side wall being a side wall between the first flight power module (21) and the second flight power module (22), and the second side wall being a side wall between the second flight power module (22) and the third flight power module (23); The laying-out method comprises the following steps: A: Assemble the load-bearing unit (1); B: Adjust the water volume of the counterweight unit (5); C: filling the first side airbag, the middle airbag and the second side airbag with helium, leveling the carrying unit (1), and flying the carrying unit (1) to the working area; D: Detect wind speed and direction; The wind speed sensor is used to detect the wind speed V in the airspace where the carrier unit (1) is located. S , if the wind speed V S ≥V0, go to step E; if wind speed V S < V0, execute step F; V0 is the minimum wind speed for pushing the carrying unit (1), V0 and V S The unit is m / s; E: Stable load-bearing unit in windy conditions (1); The angle between the wind direction and the first side wall is α; there are two cases of α, namely, α= 90° and α< 90°; Case 1: The wind load is applied vertically to the first side wall, the flight power unit (2) only turns on the first flight power module (21) and the second flight power module (22), the main control module (31) controls the driver to turn in the direction against the wind, and generates power to drive the lifting device to move, so that the carrying unit (1) remains stationary with the ground; Case 2: The wind load is applied to the first side wall and the second side wall, the flight power unit (2) turns on the first flight power module (21), the second flight power module (22) and the third flight power module (23), the main control module (31) controls the driver to turn in the direction against the wind, and generates power to drive the lifting device to move, so that the carrying unit (1) remains stationary with the ground; F: erection of transmission lines; G: Retrieve the lifting device and complete the transmission line installation.

2. The method for laying out a transmission line across a power transmission line according to claim 1, characterized in that: The step B: adjusting the water volume of the counterweight unit (5) comprises: the total mass of the water in the counterweight unit (5) is greater than the mass of the transmission line section to be installed, so that the bearing unit (1) reserves the buoyancy for bearing the transmission line section to be installed.

3. The method for laying out a transmission line across a power transmission line according to claim 1, characterized in that: The step C: filling the first side airbag, the middle airbag and the second side airbag with helium includes: the amount of helium filled is sufficient to allow the carrying unit (1) to be suspended in the air.

4. The method for laying out a transmission line across a power transmission line according to claim 1, characterized in that: In the step E: stabilizing the load-bearing unit (1) in the case of wind, the following calculations are performed: The calculation formula for wind pressure is: P=0.5ρV S 2 ; Where P is wind pressure, unit is N / m 2 ; V S is the wind speed, in m / s; ρ is the air density, in kg / m³; The calculation formula for wind load is: P W =PA= 0.5p V S 2 A ; Among them, P W is the wind load acting on the load-bearing unit (1), in N; A is the equivalent windward area of ​​the load-bearing unit (1) perpendicular to the wind direction, in m 2 ; A1 is the area of ​​the first side wall, and A2 is the area of ​​the second side wall.

5. The method for laying out a transmission line across a power transmission line according to claim 4, characterized in that: The first situation includes: A=A 1 ； F 1 =F 2 =P W / 2 ； Wherein, F1 is the driving force provided by the first flight power module (21), and F2 is the driving force provided by the second flight power module (22), and the unit of both is N.

6. The method for laying out a transmission line across a power transmission line according to claim 4, characterized in that: The first situation includes: A=A 1 ； F 1 =F 2 =P W / 2cos(90°-β) ； Wherein, F1 is the driving force provided by the first flight power module (21), and F2 is the driving force provided by the second flight power module (22), both in units of N; and β is the angle between the driving force and the wind direction.

7. The method for laying out a transmission line across a power transmission line according to claim 4, characterized in that: The second situation includes: A=A 1 Sinα+A 2 Cosα; F 1 =F 2 =F 3 =P W / 3 ； Wherein, F1 is the driving force provided by the first flight power module (21), F2 is the driving force provided by the second flight power module (22), and F3 is the driving force provided by the third flight power module (23), and the unit of all of them is N.

8. The method for laying out a transmission line across a power transmission line according to claim 4, characterized in that: The second situation includes: A=A 1 Sinα+A 2 Cosα; F 1 / cosβ=F 2 =F 3 / cosβ=P W / 3； F 1 =F 2 =P W cosβ / 3; Wherein, F1 is the driving force provided by the first flight power module (21), F2 is the driving force provided by the second flight power module (22), and F3 is the driving force provided by the third flight power module (23), all in units of N; β is the angle between the driving force and the wind direction.

9. The method for laying out a transmission line across a transmission line according to claim 6 or 8, characterized in that: 0°≤β≤10°。 10. The method for laying out a transmission line across a power transmission line according to claim 1, characterized in that: The step F: erecting the transmission line comprises: placing the transmission line on the sliding unit (4), and dragging the transmission line towards the target tower; during the process of dragging the transmission line towards the target tower, the counterweight unit (5) drains water to keep the load-bearing unit (1) in a suspended state unchanged.

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