A method for erecting floating spans on power transmission lines without power outages

Abstract

The present invention relates to a method for erecting a floating span across a transmission line without power outage, and belongs to the technical field of high-voltage power transmission. It solves the problems of insufficient safety, poor economy, and the need to shut down the existing high-voltage power lines in the prior art of erecting spanning frames and closing the network. The erection method of the present invention comprises the following steps: A: assembling a lifting unit; B: anchoring the lifting unit for the first time; C: filling with helium for the first time; D: flying the lifting unit to the working airspace; E: anchoring the lifting unit for the second time; F: filling with helium for the second time; G: erecting the transmission line; H: recovering the auxiliary device and ending the erection of the transmission line. The erection method of the present invention utilizes a plurality of suspension modules to be connected in sequence to form a lifting unit, which is suspended in the air to isolate the newly erected transmission line from the existing high-voltage power line or surface facilities, and can perform spanning line construction without shutting down the existing high-voltage power line.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission, and in particular relates to a method for erecting a floating spanning structure for a power transmission line without power outage. Background Art

[0002] In the high-voltage transmission line stringing project, the line often needs to cross the existing high-voltage power line, and the cross-over stringing construction needs to be carried out. The cross-over stringing 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 the live erection of the spanning frame for the 110kV and above crossed lines, especially when the height of the crossed line 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. Generally, the existing high-voltage power line needs to be shut down. 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 takes 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 line-laying auxiliary device to solve the problem that the existing technology of erecting a crossing frame and using newly built iron towers and poles on both sides of the crossed line to set up cross bars for network closing operations has poor safety and economy, and requires the existing high-voltage power lines to be shut down. Summary of the invention

[0006] In view of the above analysis, the present invention aims to provide a line-laying auxiliary device to solve the problems of insufficient safety, poor economy and the need to shut down the existing high-voltage power lines in the prior art of erecting crossing frames and network closing operations.

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

[0008] A method for installing floating spans on power transmission lines without power outages, using a line-laying auxiliary device to install spans on new power transmission lines without power outages on existing high-voltage power lines.

[0009] The spanning erection method comprises the following steps:

[0010] A: Assemble the lifting unit;

[0011] B: First anchoring of the lifting unit;

[0012] Connect the lifting unit to the ground through the third pulling module;

[0013] C: First filling with helium;

[0014] Filling the first airbag of the lifting unit with helium to suspend the lifting unit in the air;

[0015] D: Fly the lifting unit to the working airspace;

[0016] E: Second anchoring and lifting unit;

[0017] Connect the lifting unit to the ground through the anchoring unit;

[0018] F: Fill with helium for the second time;

[0019] Filling the second airbag of the lifting unit with helium so that the lifting unit can carry the power line without lowering its altitude;

[0020] G: erection of transmission lines;

[0021] Pull the transmission line toward the target tower; the lifting unit is used to isolate the transmission line from the existing high-voltage power line to prevent the transmission line from falling and contacting the existing high-voltage power line;

[0022] H: Recover the auxiliary equipment and complete the transmission line installation;

[0023] Exhausting the helium in the second airbag and making the lifting unit suspended in the air;

[0024] Separating the anchor unit from the ground;

[0025] The power unit rotates to make the lifting unit fly away from the working area;

[0026] Exhausting the helium in the first airbag;

[0027] Separate and store the lifting unit, power unit, control unit and anchoring unit;

[0028] Complete the transmission line installation.

[0029] Furthermore, the step B: the first anchoring of the lifting unit includes: the third pulling module is electrically connected to the third driving module, and the third driving module is connected to the controller through a pipeline; the anchor of the third pulling module is connected to the ground, and the sling of the third pulling module is connected to the anchor, so that the controller can remain set on the ground and will not be pulled by the lifting unit.

[0030] Furthermore, the step D: flying the lifting unit to the working airspace includes: the control unit only turns on the fourth driving module, the fourth driving module rotates to a position perpendicular to the first side wall of the lifting unit, and pushes the lifting unit toward the first side wall. Due to the pulling of the sling of the third pulling module, the lifting unit can rotate around the third pulling module, thereby finally allowing the lifting unit to cross the existing high-voltage power line.

[0031] Furthermore, step E: the second anchoring of the lifting unit includes: connecting the anchors of the first pulling module, the second pulling module and the fourth pulling module to the ground respectively, releasing the cranes of the first pulling module, the second pulling module and the fourth pulling module respectively, and connecting the slings of the first pulling module, the second pulling module and the fourth pulling module to their anchors respectively, so that the lifting unit maintains a fixed height with the ground to prevent the lifting unit from flying out of the working airspace.

[0032] Furthermore, the step G: before erecting the transmission line, further comprises the step of: using a wind speed sensor to detect the wind speed V in the airspace where the lifting unit is located. S , if the wind speed V S <V0, execute the step G: erect the transmission line; V0 is the minimum wind speed to push the lifting unit, V0 and V S The unit is m / s.

[0033] Furthermore, before the step G: erecting the transmission line, the method further includes the step of: stabilizing the lifting unit in windy conditions: the power unit drives the lifting unit in an upwind direction so that the lifting unit remains stationary with the ground.

[0034] Furthermore, the step: using a wind speed sensor to detect the wind speed V in the airspace where the lifting unit is located S Also includes: If the wind speed V S ≥V0, execute the steps: stabilize the lifting unit in windy conditions.

[0035] Furthermore, V0=5m / s.

[0036] Furthermore, the step: using a wind speed sensor to detect the wind speed V in the airspace where the lifting unit is located S It also includes: within each unit time t, the wind speed sensor detects the wind speed and wind direction once; 10s≤t≤30s.

[0037] Furthermore, in the step: stabilizing the lifting unit in the case of wind includes calculating the wind load, thereby determining the driving force of the power unit to drive the lifting unit in the upwind direction:

[0038] The calculation formula for wind pressure is:

[0039] P=0.5ρV S 2 ;

[0040] 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;

[0041] The calculation formula for wind load is:

[0042] P W =PA=0.5ρV S 2 A;

[0043] Among them, P W is the wind load acting on the lifting unit, in N; A is the equivalent windward area of ​​the lifting unit perpendicular to the wind direction, in m 2 ; The lifting unit includes a first side wall and a second side wall, the first side wall is the side wall between the first driving module and the second driving module, and the second side wall is the side wall between the second driving module and the third driving module; A1 is the area of ​​the first side wall, and A2 is the area of ​​the second side wall.

[0044] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0045] (1) The erection method of the present invention utilizes a plurality of suspension modules connected in sequence to form a lifting unit, which is suspended in the air to isolate the newly erected transmission line from the existing high-voltage power line or surface facilities, and can perform the cross-line erection construction without shutting down the existing high-voltage power line. The power unit can drive the lifting unit and enable the lifting unit to perform the transmission line erection work under windy weather conditions, thereby ensuring the smooth progress of the erection work;

[0046] (2) The present invention can change the length and lift of the lifting unit by increasing or decreasing the number of suspension modules. The modular lifting unit can be disassembled for easy transportation and storage, so that the auxiliary device of the present invention can be adapted to the installation of transmission lines with various spans.

[0047] (3) The power unit of the present invention can enable the auxiliary device of this embodiment to move autonomously, so that the lifting unit moves to the construction airspace. The controller can send a control signal to the drive module according to the wind direction and wind speed, and provide the lifting unit with a driving force in the direction of the wind by controlling the switch and speed of the four drive modules respectively, so as to keep the lifting unit stationary and prevent the lifting unit from changing its position and affecting the construction of the transmission line.

[0048] (4) When assembling the lifting unit, the middle block of the auxiliary device of the present invention can provide rigid support for the suspension module to prevent the lifting unit from being deformed in the length direction of the middle block; the plurality of air-filled first airbags can provide rigid support for the suspension module to prevent the lifting unit from being deformed in a direction perpendicular to the middle block. The lifting unit can provide hard support for the transmission line, facilitating the wiring operation;

[0049] (5) The first latch unit of the present invention is inserted into the first latch seat groove, and the plug-in rod pushes the rotating hook to rotate along the rotating hook axis, and the hook section is then connected to the plug-in rod, which can quickly connect the first latch unit to the first latch seat, thereby connecting the first air bag and the middle block; the plug block can be connected to the socket block, and the first electrical interface can be connected to the second electrical interface, and the first air interface can be connected to the second air interface; the first locking tooth can be connected to the second locking tooth, thereby preventing the plug ring from detaching from the socket block, and further preventing the second latch unit from detaching from the second latch seat, quickly connecting the first air bag and the middle block while connecting the circuit and the air path.

[0050] 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

[0051] 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;

[0052] Figure 1 It is a schematic diagram of the process of setting up the method of the present invention;

[0053] Figure 2 It is a schematic diagram of the overall structure of the auxiliary device of the present invention;

[0054] Figure 3 It is the overall structural schematic diagram of the power unit;

[0055] Figure 4 is a schematic diagram of the overall structure of the anchoring unit;

[0056] Figure 5 It is a schematic diagram of driving force distribution of the power unit in case 1;

[0057] Figure 6 It is a schematic diagram of the overall structure of the lifting assembly and the middle block;

[0058] Figure 7 is a schematic diagram of the overall structure of the first buckle unit and the pulling unit;

[0059] Figure 8 It is a schematic diagram of the exploded structure of the first buckle seat, the second buckle unit and the second buckle seat.

[0060] Reference numerals:

[0061] 1-lifting unit; 2-power unit; 3-control unit; 4-transmission unit; 5-anchoring unit; 6-first buckle unit; 7-first buckle seat; 8-second buckle unit; 9-second buckle seat; 11-lifting assembly; 12-middle block; 21-first drive module; 22-second drive module; 23-third drive module; 24-fourth drive module; 31-controller; 32-pipeline; 51-first pulling module; 52-second pulling module; 53 - the third pulling module; 54 - the fourth pulling module; 61 - the supporting rod; 62 - the plug-in rod; 63 - the rotating shaft rod; 71 - the rotating hook; 72 - the rotating hook shaft; 73 - the limiting pin; 74 - the limiting pin spring; 75 - the first buckle seat groove; 81 - the plug block; 82 - the plug ring; 83 - the first locking tooth; 91 - the socket block; 92 - the second locking tooth; 93 - the locking tooth groove; 111 - the first airbag; 112 - the second airbag; 501 - the crane; 502 - the sling. DETAILED DESCRIPTION

[0062] 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.

[0063] Example 1

[0064] A specific embodiment of the present invention, as Figure 1 As shown, a method for erecting a floating spanning transmission line without power outage (hereinafter referred to as the erection method) is disclosed. A line erection auxiliary device of Example 2 is used to erect a new transmission line without power outage on an existing high-voltage power line, including the following steps:

[0065] Step 1: Assemble the lifting unit 1;

[0066] Preferably, the lifting unit 1 is assembled on one side of an existing high-voltage power line; during the assembly process, the lifting unit 1 is made parallel to the high-voltage power line in the length direction;

[0067] The following steps are included:

[0068] Sub-step 11: Installing the power unit 2 and the anchor unit 5 on the first intermediate block 12

[0069] like Figure 3 As shown, a first driving module 21 and a fourth driving module 24 are respectively installed at both ends of the first intermediate block 12; the first driving module 21 and the fourth driving module 24 are both connected to the circuit;

[0070] Preferably, the first driving module 21 and the fourth driving module 24 are both provided with a second buckle unit 8, and the first driving module 21 and the fourth driving module 24 are both connected to the second buckle seat 9 on the first intermediate block 12 through the second buckle unit 8;

[0071] like Figure 4 As shown, the anchoring unit 5 includes a first pulling module 51, a second pulling module 52, a third pulling module 53 and a fourth pulling module 54. The crane 501 of the first pulling module 51 and the crane 501 of the fourth pulling module 54 are respectively connected to the first buckle unit 6 through the first buckle seat 7, thereby connecting to the middle block 12.

[0072] Step 12: Connect multiple lifting components 11 and intermediate blocks 12 in series

[0073] Connect the first airbag 111 of the lifting assembly 11 to the middle block 12 in the previous step, and then connect another middle block 12 to the first airbag 111; repeat this step until the preset length of the lifting unit 1 is reached;

[0074] Preferably, there are multiple lifting components 11 and intermediate blocks 12. By changing the number of lifting components 11 and intermediate blocks 12, the total length of the lifting unit 1 can be changed. The lifting unit 1 that can be assembled modularly can be disassembled for easy transportation and storage, so that the erection method of this embodiment can adapt to the erection of transmission lines with various spans.

[0075] Preferably, the first buckle unit 6 and the first buckle seat 7 are used to connect the lifting assembly 11 and the middle block 12; the second buckle unit 8 and the second buckle seat 9 are used to connect the waterway and the circuit between the lifting assembly 11.

[0076] Sub-step 13: Install the power unit 2 and the anchor unit 5 on the last intermediate block 12

[0077] like Figure 3As shown, a second driving module 22 and a third driving module 23 are respectively installed at both ends of the last middle block 12; the second driving module 22 and the third driving module 23 are both connected to the circuit;

[0078] Preferably, the second driving module 22 and the third driving module 23 are provided with a second buckle seat 9, and the second driving module 22 and the third driving module 23 are connected to the second buckle unit 8 on the middle block 12 through the second buckle seat 9;

[0079] Preferably, Figure 4 As shown, the two hoists 501 of the second pulling module 52 and the third pulling module 53 are respectively connected to the first buckle unit 6 through the first buckle seat 7, thereby connecting to the middle block 12.

[0080] Step 2: Anchoring the lifting unit 1 for the first time;

[0081] Preferably, the third pulling module 53 is electrically connected to the third driving module 23, and the third driving module 23 is connected to the controller 31 through the pipeline 32. The anchor of the third pulling module 53 is connected to the ground, and the sling 502 of the third pulling module 53 is connected to the anchor, so that the controller 31 can be kept on the ground and will not be pulled by the lifting unit 1.

[0082] Step 3: Fill with helium for the first time;

[0083] Fill all the first airbags 111 with helium and suspend the lifting unit 1 in the air;

[0084] Preferably, the amount of helium filled is just enough to enable the lifting unit 1 to be parallel to the horizontal plane.

[0085] Step 4: Lifting unit 1 flies to the working airspace;

[0086] The power unit 2 rotates to generate thrust in the direction opposite to the forward direction, so that the lifting unit 1 flies to the working airspace;

[0087] Preferably, in order to prevent the power unit 2 from squeezing the lifting unit 1 and causing deformation of the lifting unit 1 when the lifting unit 1 is flying, the control unit 3 only turns on the fourth driving module 24, and the fourth driving module 24 rotates to be perpendicular to the first side wall and pushes the lifting unit 1 toward the first side wall. Due to the pulling of the sling 502 of the third pulling module 53, the lifting unit 1 can rotate around the third pulling module 53, and finally the lifting unit 1 crosses the existing high-voltage power line;

[0088] After the lifting unit 1 is in place, turn off the power unit 2.

[0089] Step 5: Anchor the lifting unit 1 for the second time;

[0090] Preferably, the anchors of the first pulling module 51, the second pulling module 52 and the fourth pulling module 54 are respectively connected to the ground, the cranes 501 of the first pulling module 51, the second pulling module 52 and the fourth pulling module 54 release the slings 502 respectively, and the slings 502 of the first pulling module 51, the second pulling module 52 and the fourth pulling module 54 are respectively connected to the anchors, so that the lifting unit 1 maintains a fixed height with the ground to prevent the lifting unit 1 from flying out of the working airspace.

[0091] Step 6: Fill with helium for the second time;

[0092] All the second air bags 112 are filled with helium so that the lifting unit 1 can carry the power line without decreasing its height.

[0093] Step 7: Detect wind speed;

[0094] 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 auxiliary device in this embodiment are: maximum working wind speed 13.8m / s (10m above the ground, 10min average wind speed).

[0095] The wind speed sensor is used to detect the wind speed V in the airspace where the lifting unit 1 is located. S , if the wind speed V S ≥V0, go to step 8; if wind speed V S <V0, go to step 9; V0 is the minimum wind speed to push the lifting unit 1, V0 and V S The unit is m / s;

[0096] Preferably, V0=5m / s; due to the traction of the anchoring unit 5, the wind speed is less than 5m / s, and the displacement of the lifting unit 1 caused by the wind does not affect the wiring operation;

[0097] Preferably, the wind speed sensor detects the wind speed and wind direction once per unit time t;

[0098] Preferably, 10s≤t≤30s.

[0099] Step 8: Stabilize the lifting unit 1 in windy conditions;

[0100] The wind load calculation of this embodiment is based on the basic design parameters and requirements of the "Crane Design Code" (GB / T3811):

[0101] P=0.5ρV S 2 ;

[0102] 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;

[0103] The calculation formula for wind load is:

[0104] P W =PA

[0105] Among them, P W is the wind load acting on the lifting unit 1, in N; A is the equivalent windward area of ​​the lifting unit 1 perpendicular to the wind direction, in m 2 The lifting unit 1 includes a first side wall and a second side wall, wherein the first side wall is a side wall between the first driving module 21 and the second driving module 22, and the second side wall is a side wall between the second driving module 22 and the third driving module 23. A1 is the area of ​​the first side wall, and A2 is the area of ​​the second side wall.

[0106] 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°.

[0107] Case 1: If Figure 5 As shown, the wind load is applied vertically to the first side wall, the power unit 2 only turns on the first drive module 21 and the second drive module 22, and the controller 31 controls the driver to turn in the upwind direction and generates power to drive the auxiliary device of this embodiment to move;

[0108] A=A1;

[0109] F1=F2=P W / 2=PA1 / 2;

[0110] Wherein, F1 is the driving force provided by the first driving module 21, and F2 is the driving force provided by the second driving module 22, both in N.

[0111] Case 2: If Figure 3 As shown, the wind load is applied to the first side wall and the second side wall, the power unit 2 only turns on the first drive module 21, the second drive module 22 and the third drive module 23, the controller 31 controls the driver to turn in the upwind direction, and generates power to drive the auxiliary device of this embodiment to move;

[0112] A = A1Sinα + A2Cosα;

[0113] F1=F2=F3=P W / 3=P(A1Sinα+A2Cosα) / 3;

[0114] Wherein, F1 is the driving force provided by the first driving module 21 , F2 is the driving force provided by the second driving module 22 , and F3 is the driving force provided by the third driving module 23 , and the unit of all of them is N.

[0115] Step 9: Build transmission lines;

[0116] Pull the transmission line toward the target tower; the lifting unit 1 is used to isolate the transmission line from the existing high-voltage power line to prevent the transmission line from falling and contacting the existing high-voltage power line, causing the existing high-voltage power line to malfunction;

[0117] Preferably, if the power line falls, the power line can be dragged on the transmission unit 4 towards the target tower.

[0118] Step 10: Recover the auxiliary device and complete the transmission line installation;

[0119] Exhausting the helium in the second airbag 112 and making the lifting unit 1 suspended in the air;

[0120] The slings 502 of the first pulling module 51, the second pulling module 52 and the fourth pulling module 54 are all separated from the anchors, and the cranes 501 of the first pulling module 51, the second pulling module 52 and the fourth pulling module 54 respectively retract the slings 502, and the anchors of the first pulling module 51, the second pulling module 52 and the fourth pulling module 54 are all separated from the ground, so that the lifting unit 1 maintains a fixed height with the ground to prevent the lifting unit 1 from flying out of the working airspace;

[0121] The power unit 2 rotates to generate thrust in the direction opposite to the forward direction, so that the lifting unit 1 flies away from the working area;

[0122] Preferably, in order to prevent the power unit 2 from squeezing the lifting unit 1 and causing deformation of the lifting unit 1 when the lifting unit 1 is flying, the control unit 3 only turns on the first driving module 21, and the first driving module 21 rotates to be perpendicular to the first side wall and pushes the lifting unit 1 toward the fourth driving module 24. Due to the pulling of the sling 502 of the third pulling module 53, the lifting unit 1 can rotate around the third pulling module 53, and finally the lifting unit 1 is parallel to the existing high-voltage power line.

[0123] Exhausting the helium in the first airbag 111;

[0124] 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.

[0125] Separate and store the lifting unit 1, the power unit 2, the control unit 3 and the anchoring unit 5;

[0126] Complete the transmission line installation.

[0127] Compared with the prior art, the erection method of this embodiment utilizes the lifting unit 1 suspended in the air to isolate the newly erected transmission line from the existing high-voltage power line or surface facilities, and can carry out cross-line construction without shutting down the existing high-voltage power line. The power unit 2 can drive the lifting unit 1 and enable the lifting unit 1 to carry out the erection of the transmission line under windy weather conditions, ensuring the smooth progress of the erection work.

[0128] Example 2

[0129] A specific embodiment of the present invention, as Figure 2 As shown, a line-erecting auxiliary device (hereinafter referred to as the auxiliary device) used in Example 1 is disclosed, including a lifting unit 1, a power unit 2 and a control unit 3. The power unit 2 is arranged on the lifting unit 1, and the control unit 3 is connected to the power unit 2. The lifting unit 1 can float in the air to isolate the newly erected transmission line from the existing high-voltage power line or surface facilities to perform crossing construction. The control unit 3 is used to control the power unit 2, and the power unit 2 is used to drive the lifting unit 1 to enable the lifting unit 1 to move and remain in the construction airspace.

[0130] Preferably, the lifting unit 1 includes a skin and helium, and the skin can be filled with helium, so that the lifting unit 1 can be suspended in the air. When laying the line, it is only necessary to fill the lifting unit 1 of the auxiliary device of this embodiment with helium, and the auxiliary device can complete the deployment and laying, with high safety and economy, simple operation, and short laying time.

[0131] Preferably, the control unit 3 includes a controller 31, a pipeline 32 and a wind speed sensor (not shown in the figure). The wind speed sensor is arranged on the lifting unit 1. The wind speed sensor and the power unit 2 are both connected to the controller 31 through the pipeline 32. The wind speed sensor can sense the wind direction and wind speed in the airspace where the lifting unit 1 is located, and transmit them to the controller 31 through the pipeline 32. The pipeline 32 includes an air pipe and an electric wire. When the auxiliary device of this embodiment is blown by wind, the controller 31 can send a control signal to the power unit 2 according to the wind direction and wind speed, and provide the lifting unit 1 with a driving force in the direction of the wind by controlling the switch and speed of the power unit 2, so as to keep the lifting unit 1 stationary and prevent the lifting unit 1 from changing its position and affecting the construction of the transmission line.

[0132] Preferably, if Figure 3As shown, the power unit 2 includes a first drive module 21, a second drive module 22, a third drive module 23 and a fourth drive module 24, which are respectively arranged on the skins at both ends of the lifting unit 1, and the first drive module 21, the second drive module 22, the third drive module 23 and the fourth drive module 24 have the same structure. The first drive module 21 includes a motor and a driver, the motor is used to drive the driver to rotate and generate power to drive the auxiliary device of this embodiment to move, and the driver is a blade driver or a ducted fan driver. The motor is connected to the controller 31. The power unit 2 can make the auxiliary device of this embodiment move autonomously, so that the lifting unit 1 moves to the construction airspace.

[0133] Preferably, if Figure 2 As shown, the auxiliary device of this embodiment further includes a transmission unit 4, which is arranged on the skin. The transmission unit 4 includes a plurality of rotating rods, which can rotate and are used to support the transmission line to prevent the transmission line from generating sliding friction with the lifting unit 1, thereby protecting the transmission line and the lifting unit 1 and facilitating the installation of the transmission line.

[0134] Preferably, the auxiliary device of this embodiment further includes an anchoring unit 5, which includes four pulling modules, and the four pulling modules are respectively arranged on the skins at both ends of the lifting unit 1. The anchoring unit 5 is used to connect the lifting unit 1 to the ground, so that the lifting unit 1 maintains a suspended posture, which facilitates the construction of the transmission line erection.

[0135] According to calculations, the lift that helium can provide is: 1 cubic meter of helium can provide about 10N of lift in the atmosphere.

[0136] For a newly built 500kV line crossing a 220kV or lower operating line, the size of the lifting 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 lifting 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 lifting unit 1 carries about 10kN and 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 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 lifting unit 1 meets the engineering requirements. If the span exceeds 300 meters, the length, width and height of the lifting unit 1 can be increased to increase the volume to meet the buoyancy requirements.

[0137] After the helium is exhausted, the volume and weight of the lifting unit 1 are still large, which is not conducive to transportation. Figure 6 As shown, the lifting unit 1 includes a lifting assembly 11 and an intermediate block 12, and the intermediate block 12 is used to connect two lifting assemblies 11. By adding or removing the lifting assemblies 11, the length and lifting force of the lifting unit 1 can be changed, and the modular lifting unit 1 can be disassembled for easy transportation and storage, so that the auxiliary device of this embodiment can adapt to the installation of transmission lines of various spans.

[0138] Preferably, if Figure 6 As shown, the lifting assembly 11 includes a first airbag 111 and a second airbag 112. The first airbag 111 is arranged on the second airbag 112, and the first airbag 111 can be connected to the middle block 12. The first airbag 111 and the second airbag 112 are both flexible airbags that can be folded, and the middle block 12 is a hard middle block. When assembling the lifting unit 1, the middle block 12 is used to provide rigid support for the lifting assembly 11 to prevent the lifting unit 1 from deforming in the length direction of the middle block 12; the first airbag 111 can be inflated and maintain a fixed shape. Multiple inflated first airbags 111 provide rigid support for the suspension module to prevent the lifting unit 1 from deforming in a direction perpendicular to the middle block 12. The lifting unit 1 can provide hard support for the transmission line to facilitate the line stringing operation.

[0139] When assembling the lifting unit 1, the user inflates it twice. The first inflation fills all the first airbags 111 with helium, and the lifting unit 1 can be suspended in the air and complete the operation of crossing the existing high-voltage power lines, high-speed railways, and highways. Thereafter, the lifting unit 1 is anchored using the anchoring unit 5, and then the second inflation is performed to fill the second airbags 112 with helium. The buoyancy provided by the second airbags 112 enables the lifting unit 1 to lift the transmission line and complete the assumed work of the transmission line.

[0140] Preferably, in order to quickly connect the first airbag 111 and the middle block 12, the auxiliary device of this embodiment further includes a first buckle unit 6 and a first buckle seat 7, a plurality of first buckle units 6 are arranged at both ends of the middle block 12, and a plurality of first buckle seats 7 are arranged at both ends of the first airbag 111. Wires are arranged in the first airbag 111, and the wires of each suspension module can be interconnected to form a circuit.

[0141] Preferably, if Figure 7 and Figure 8 As shown, the first buckle unit 6 includes a support rod 61 and a plug rod 62, one end of the support rod 61 is fixedly connected to the side wall of the middle block 12, and the plug rod 62 is connected to the other end of the support rod 61. The first buckle seat 7 includes a rotating hook 71 and a rotating hook shaft 72, and the first airbag 111 is provided with a first buckle seat groove 75, and the rotating hook 71 is rotatably connected to the first buckle seat groove 75 through the rotating hook shaft 72.

[0142] Preferably, the rotating hook 71 includes a stopper section and a hooking section. When the first airbag 111 is connected to the middle block 12, the first buckle unit 6 is inserted into the first buckle seat groove 75, the plug-in rod 62 is first connected to the stopper section, and the rotating hook 71 is pushed to rotate along the rotating hook shaft 72, and the hooking section is then connected to the plug-in rod 62, the first buckle unit 6 is connected to the first buckle seat 7, and the first airbag 111 is connected to the middle block 12.

[0143] Preferably, in order to lock the rotating hook 71, a first slot is provided on the stop section, and a second slot is provided on the hook section, and the first slot and the second slot have the same structure. The first buckle seat 7 also includes a limit pin 73, which is a columnar limit pin, and the limit pin 73 is arranged on the first buckle seat groove 75. The limit pin 73 includes a rotating hook groove and a limit block, and the limit block is arranged on the rotating hook groove. The rotating hook 71 can be connected to the rotating hook groove and rotate in the rotating hook groove; the first slot and the second slot both include an unlocking inclined surface and a locking plane, and the limit block can be connected to the locking plane to prevent the rotating hook 71 from rotating in the direction of the stop section; when the rotating hook 71 rotates in the direction of the hook section, the unlocking inclined surface can be connected to the limit block and push the limit block away, and the rotating hook 71 can continue to rotate in the direction of the hook section. The limit block is connected to the first slot, and the rotating hook 71 is in a waiting state; the limit block is connected to the second slot, and the rotating hook 71 is connected to the plug-in rod 62 and cannot be separated from the plug-in rod 62.

[0144] Preferably, the first buckle seat 7 also includes a limit pin spring 74, one end of the limit pin spring 74 is connected to the limit pin 73, and the other end of the limit pin spring 74 is connected to the first buckle seat groove. The limit pin spring 74 is used to push the limit pin 73 to keep the limit block connected to the rotating hook 71.

[0145] In some optional embodiments, the first buckle unit 6 further includes a shaft rod 63, the shaft rod 63 is connected to the support rod 61, and the plug rod 62 is rotatably connected to the shaft rod 63. When the plug rod 62 is connected to the stopper section and pushes the rotating hook 71 to rotate along the rotating hook axis 72, the plug rod 62 can rotate around the shaft rod 63, and the friction between the plug rod 62 and the rotating hook 71 is rotational friction, which reduces the wear of the plug rod 62 and the rotating hook 71 and improves the service life of the first buckle unit 6 and the first buckle seat 7.

[0146] Preferably, if Figure 6 As shown, in order to connect the circuit, the auxiliary device of this embodiment further includes a second buckle unit 8 and a second buckle seat 9. The second buckle unit 8 can be plugged into the second buckle seat 9, so that the circuit can be quickly connected.

[0147] Preferably, if Figure 8As shown, the second buckle unit 8 includes a plug block 81 and a plug ring 82. A plurality of plug blocks 81 are arranged on the first air bag 111. The plug block 81 is a cylindrical plug block. The plug block 81 includes an annular groove, a first electrical interface and a first air interface. The plug ring 82 is an annular plug ring. An annular flange is provided on the plug ring 82. The annular flange can be connected to the annular groove, so that the plug ring 82 can rotate on the plug block 81, and the plug ring 82 cannot be separated from the plug block 81.

[0148] Preferably, the plug ring 82 is also provided with a first locking tooth 83. The second buckle seat 9 includes a socket block 91, a plurality of socket blocks 91 are arranged on the middle block 12, the socket block 91 includes a second electrical interface and a second gas interface, the first electrical interface can be connected to the second electrical interface, the first gas interface can be connected to the second gas interface, and the first gas interface and the second gas interface are used to input helium to the first air bag 111. The second buckle 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 socket block 91, and a locking tooth groove 93 is formed between the plurality of second locking teeth 92. The plug block 81 can be connected to the socket block 91, and the first electrical interface and the second electrical interface are connected, and the first gas interface and the second gas interface are connected, and the first locking tooth 83 can be connected to the locking tooth groove 93; the plug ring 82 is rotated, and the first locking tooth 83 can be connected to the second locking tooth 92, so as to prevent the plug ring 82 from being separated from the socket block 91, and then prevent the second buckle unit 8 from being separated from the second buckle seat 9.

[0149] Preferably, if Figure 7 As shown, the rotating rod of the transmission unit 4 is rotatably connected to the middle block 12. The first driving module 21, the second driving module 22, the third driving module 23 and the fourth driving module 24 all include a second buckle unit 8, and the first driving module 21, the second driving module 22, the third driving module 23 and the fourth driving module 24 are respectively connected to the middle block 12 through the second buckle unit 8, and the first driving module 21, the second driving module 22, the third driving module 23 and the fourth driving module 24 are mutually connected through the circuit.

[0150] Preferably, the anchoring unit 5 includes four pulling modules, which are arranged on the middle block 12; the four pulling modules of the anchoring unit 5 are interconnected through a circuit. The pulling module includes a first buckle seat 7, a crane 501, a sling 502 and an anchor (not shown in the figure), the first buckle seat 7 is arranged on the crane 501, and the crane 501 can be connected to the first buckle unit 6 through the first buckle seat 7, thereby connecting to the middle block 12, and the middle block 12 is used to provide a firm connection foundation for the crane 501; one end of the sling 502 is connected to the crane 501, and the other end of the sling 502 can be connected to the anchor connected to the ground, so as to keep the lifting unit 1 in a suspended posture and prevent the lifting unit 1 from flying out of the working airspace.

[0151] Compared with the prior art scheme of erecting a crossing frame and using newly built towers and poles on both sides of the crossed line to set up cross bars for network sealing operations, it is only necessary to fill the lifting unit 1 of the auxiliary device of this embodiment with helium, and the auxiliary device can complete the deployment and layout, with high safety and economy, simple deployment operation and short deployment time; the power unit 2 can enable the auxiliary device of this embodiment to move autonomously, so that the lifting unit 1 moves to the construction airspace, and the controller 31 can send a control signal to the drive module according to the wind direction and wind speed, and provide the lifting unit 1 with a driving force in the direction of the wind by controlling the switches and speeds of the four drive modules respectively, so as to keep the lifting unit 1 stationary and prevent the lifting unit 1 from changing its position and affecting the construction of the transmission line.

[0152] The multiple suspension modules of the auxiliary device of this embodiment are connected in sequence to form a lifting unit 1. By increasing or decreasing the number of suspension modules, the length and lift of the lifting unit 1 can be changed. The modular lifting unit 1 can be disassembled for easy transportation and storage, so that the auxiliary device of this embodiment can adapt to the installation of transmission lines with various spans. When assembling the lifting unit 1, the middle block 12 can provide rigid support for the suspension module to prevent the lifting unit 1 from deforming in the length direction of the middle block 12. The multiple air-filled first airbags 111 can provide rigid support for the suspension module to prevent the lifting unit 1 from deforming in a direction perpendicular to the middle block 12. The lifting unit 1 can provide hard support for the transmission line, which is convenient for the wiring operation. ; The first buckle unit 6 is inserted into the first buckle seat groove 75, and the plug-in rod 62 pushes the rotating hook 71 to rotate along the rotating hook shaft 72, and the hook section is immediately connected to the plug-in rod 62, which can quickly connect the first buckle unit 6 with the first buckle seat 7, thereby connecting the first air bag 111 and the middle block 12; the plug block 81 can be connected to the socket block 91, and connect the first electrical interface with the second electrical interface, and connect the first gas interface with the second gas interface; the first locking tooth 83 can be connected to the second locking tooth 92, thereby preventing the plug ring 82 from detaching from the socket block 91, and then preventing the second buckle unit 8 from detaching from the second buckle seat 9, quickly connecting the first air bag 111 and the middle block 12 while connecting the circuit and the gas path.

[0153] 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 erecting a floating spanning structure for a power transmission line without power outage, characterized in that: A wire-laying auxiliary device is used to erect new transmission lines across existing high-voltage power lines without shutting down the existing lines. The spanning erection method comprises the following steps: A: Assemble the lifting unit (1); B: First anchoring lifting unit (1); Connecting the lifting unit (1) to the ground via a third pulling module (53); C: First filling with helium; Filling the first air bag (111) of the lifting unit (1) with helium, and causing the lifting unit (1) to be suspended in the air; D: Fly the lifting unit (1) to the working airspace; E: Second anchoring and lifting unit (1); Connecting the lifting unit (1) to the ground via an anchoring unit (5); F: Fill with helium for the second time; Filling the second air bag (112) of the lifting unit (1) with helium so that the lifting unit (1) can carry the power transmission line without lowering its altitude; G: erection of transmission lines; The transmission line is pulled toward the target power tower; the lifting unit (1) is used to isolate the transmission line from the existing high-voltage power line to prevent the transmission line from falling and contacting the existing high-voltage power line; H: Recover the auxiliary equipment and complete the transmission line installation; Expelling the helium in the second airbag (112) and causing the lifting unit (1) to be suspended in the air; Separating the anchoring unit (5) from the ground; The power unit (2) rotates to cause the lifting unit (1) to fly away from the working area; Expelling the helium in the first air bag (111); The lifting unit (1), the power unit (2), the control unit (3) and the anchoring unit (5) are separated and stored; Complete the transmission line installation.

2. The method for installing a floating spanning structure for a power transmission line without power outage according to claim 1, characterized in that: The step B: anchoring the lifting unit (1) for the first time comprises: the third pulling module (53) is electrically connected to the third driving module (23), and the third driving module (23) is connected to the controller (31) via a pipeline (32); the anchor of the third pulling module (53) is connected to the ground, and the sling (502) of the third pulling module (53) is connected to the anchor, so that the controller (31) can remain set on the ground and will not be pulled by the lifting unit (1).

3. The method for installing a floating spanning structure for a power transmission line without power outage according to claim 2, characterized in that: The step D: flying the lifting unit (1) to the working airspace comprises: the control unit (3) only turns on the fourth driving module (24), the fourth driving module (24) rotates to a position perpendicular to the first side wall of the lifting unit (1), and pushes the lifting unit (1) toward the first side wall; due to the pulling of the sling (502) of the third pulling module (53), the lifting unit (1) can rotate around the third pulling module (53), and finally the lifting unit (1) crosses the existing high-voltage power line.

4. The method for erecting a floating spanning power transmission line without power outage according to claim 1, characterized in that: The step E: anchoring the lifting unit (1) for the second time comprises: connecting the anchors of the first pulling module (51), the second pulling module (52) and the fourth pulling module (54) to the ground respectively, releasing the hoists (501) of the first pulling module (51), the second pulling module (52) and the fourth pulling module (54) respectively, and connecting the slings (502) of the first pulling module (51), the second pulling module (52) and the fourth pulling module (54) to the anchors respectively, so that the lifting unit (1) maintains a fixed height with the ground, and prevents the lifting unit (1) from flying out of the working airspace.

5. The method for erecting a floating spanning power transmission line without power outage according to claim 1, characterized in that: The step G: before erecting the transmission line, further comprises the step of: using a wind speed sensor to detect the wind speed V in the airspace where the lifting unit (1) is located. S , if the wind speed V S < V0, execute step G: erect the transmission line; V0 is the minimum wind speed for pushing the lifting unit (1), V0 and V S The unit is m / s.

6. The method for erecting a floating spanning transmission line without power outage according to claim 5, characterized in that: Before the step G: erecting the transmission line, the method further comprises the step of: stabilizing the lifting unit (1) in a windy condition: the power unit (2) drives the lifting unit (1) in an upwind direction so that the lifting unit (1) remains stationary with the ground.

7. The method for installing a floating spanning structure for a power transmission line without power outage according to claim 6, characterized in that: The steps include: using a wind speed sensor to detect the wind speed V in the airspace where the lifting unit (1) is located. S Also includes: If the wind speed V S ≥V0, execute the steps: stabilize the lifting unit (1) in windy conditions.

8. The method for installing floating spans over power transmission lines without power outages according to claim 5, characterized in that: The V0=5m / s.

9. The method for erecting a floating spanning power transmission line without power outage according to claim 5, characterized in that: The steps include: using a wind speed sensor to detect the wind speed V in the airspace where the lifting unit (1) is located. S It also includes: within each unit time t, the wind speed sensor detects the wind speed and wind direction once; 10s≤t≤30s.

10. The method for erecting a floating spanning structure for a power transmission line without power outage according to claim 6, characterized in that: In the step: stabilizing the lifting unit (1) in the presence of wind includes calculating the wind load, thereby determining the driving force of the power unit (2) to drive the lifting unit (1) in the direction against the wind.

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