Single-blade hoisting construction method for ultrahigh wind turbine generator

Abstract

The invention discloses an ultrahigh wind turbine generator single-blade hoisting construction method, and belongs to ultrahigh wind turbine generator single-blade hoisting construction.The ultrahigh wind turbine generator single-blade hoisting construction method comprises a crane, a lifting arm is installed above the crane, a lifting hook is installed at one end of the lifting arm, a suspension frame is arranged at the bottom of the lifting hook, the lifting hook and the suspension frame are connected through a cable, and the suspension frame comprises a driving box and a fixing frame; the driving box is located above the fixing frame. During use, angle overturning of the blades and external adjusting procedures for simplifying installation can be achieved in the hoisting process, the hoisting wind speed can be increased to 10 m / s from 8 m / s, the fan hoisting window period is greatly widened, the ground assembling time is shortened, the construction window period is prolonged, the installation efficiency is improved, and compared with a single-blade hoisting mode, the installation cost is reduced, and the installation efficiency is improved. And a single-blade hoisting working platform is small, so that forest felling is reduced, ecological damage is reduced, and the influence of construction on the environment is reduced.

Description

Technical Field

[0001] The present application relates to the hoisting construction of a single blade of an ultra-high wind turbine generator set, and in particular to a method for hoisting the construction of a single blade of an ultra-high wind turbine generator set. Background Art

[0002] With the continuous development of wind power generation, the power generation capacity of a single unit is getting higher and higher, and has developed to more than 6MW. As a result, the height and size of the wind turbine are also getting larger and larger. The traditional ground combination of wind turbines occupies a large area, land acquisition is difficult, and the requirements for the hoisting platform and the surrounding environment are high, which seriously restricts the hoisting of large wind turbines. In order to break through these limitations, researchers are constantly exploring new hoisting technologies and methods to meet the needs of complex terrain and limited sites; the commonly used solutions currently include: 1. Ground combination hoisting: pre-assemble the blades, hub and nacelle into a whole on the ground, and then hoist them. Although this method is simple to operate, it is difficult to achieve under complex terrain and limited site conditions because the required ground area is large and the environmental requirements are high; 2. Split hoisting: hoist the blades, hub and nacelle to the predetermined position separately, and then assemble them in the air. Although this method reduces the land demand of the ground combination, it has high requirements for hoisting equipment, and the hoisting process is more complicated and less safe.

[0003] The existing ground combination hoisting method occupies a large area, is difficult to acquire land, and has high requirements for the hoisting platform and the surrounding environment, which seriously restricts the hoisting of large wind turbines. Although the split hoisting method reduces the land requirements of the ground combination, it has high requirements for hoisting equipment, and the hoisting process is complicated, with low safety and is easily affected by factors such as wind speed. When hoisting the blades at high altitudes, the conversion of the blade angle often relies on the work on the ground to drive the wind rope fastened to the surface of the blade. However, in the case of strong wind at high altitudes, the angle change becomes more difficult, and the accuracy is difficult to guarantee, which reduces work efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present application provides a method for hoisting and constructing a single blade of an ultra-high wind turbine, which overcomes the shortcomings of the prior art and aims to solve the problem that the existing ground combination hoisting method in the prior art occupies a large area, is difficult to acquire land, and has high requirements for the hoisting platform and the surrounding environment, which seriously restricts the hoisting of large wind turbines. Although the split hoisting method reduces the land demand of the ground combination, it has high requirements for the hoisting equipment, and the hoisting process is complicated, with low safety, and is easily affected by factors such as wind speed. When the blade is hoisted at high altitude, the conversion of the blade angle often relies on the work on the ground to drive the cable wind rope fastened to the surface of the blade. However, in this way, when the wind is strong at high altitude, the angle change becomes more difficult, and the accuracy is difficult to guarantee, which reduces the work efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A method for hoisting and constructing a single blade of an ultra-high wind turbine, comprising a crane, a boom installed above the crane, a hook installed at one end of the boom, a suspension frame arranged at the bottom of the hook, the hook and the suspension frame being connected by a cable, the suspension frame comprising a drive box and a fixed frame, the drive box being located above the fixed frame, a plurality of groups of suspension hooks being installed on both sides of the fixed frame, a rotating disk being installed on the output end of the drive box passing through the fixed frame, a mounting frame being installed at the bottom of the suspension frame, a fixed block being arranged inside the mounting frame, a rotating groove matching the rotating disk being opened above the fixed block, a placing mechanism being installed on both sides of the suspension frame, the placing mechanism comprising a placing frame and a plug-in block, two groups of the plug-in blocks being installed at the bottom of the placing frame, an abutting fixing mechanism being arranged at the bottom of the placing frame, a winding mechanism being installed inside the plug-in block, and a cable wind system being installed on the outside of the suspension frame.

[0006] By adopting the above technical solution and setting up a suspension frame, when in use, the abutting fixing mechanism and the winding mechanism arranged at the bottom of the placing mechanism on both sides can clamp the fan blades installed between the winding mechanism and the abutting fixing mechanism to prevent shaking during the hoisting process. The set drive box can drive the mounting frame to rotate to achieve the lateral angle change of the fan blades, so that the angle of the blades can be flipped during the hoisting process, simplifying the external adjustment process of the installation, and the hoisting wind speed can be increased from 8m / s to 10m / s, which greatly broadens the window period for fan hoisting, reduces the ground assembly time, extends the construction window period, and improves the installation efficiency. Compared with the single-blade hoisting method, the single-blade hoisting working platform is small, which reduces deforestation, reduces ecological damage, and reduces the impact of construction on the environment.

[0007] As a preferred technical solution of the present application, the abutment and fixing mechanism includes a telescopic rod and an abutment arm, a rotating shaft is arranged between the telescopic rod and the abutment arm, the winding mechanism includes a plug-in rod and a tightening belt, the plug-in rod is rotatably connected to the inside of the plug-in block, and a tightening belt is arranged between the two groups of the plug-in rods.

[0008] By adopting the above technical solution and setting up an abutment fixing mechanism, when in use, the mutual hinge between the telescopic rod and the abutment arm can make the bottom of the abutment arm and the blade fit each other, and then the bottom of the blade is fixed by the tightening belt below, and then the telescopic rod can be used to move the abutment arm downward close to the blade, so as to facilitate the abutment and clamping of the irregular surface of the blade.

[0009] As a preferred technical solution of the present application, pitch mechanisms are provided on both sides of the mounting frame, and the pitch mechanisms include a pitch motor and a fixed plate. Both sides of the fixed plate are fixedly connected to the mounting frame, and the output end of the pitch motor passes through the fixed plate and is fixedly connected to the placement mechanism.

[0010] By adopting the above technical solution and setting up a pitch mechanism, the pitch angles of the two sets of placement mechanisms can be adjusted during use, which cooperates with the movement of the mounting frame, so that the blades can be installed more flexibly and the installation efficiency is improved.

[0011] As a preferred technical solution of the present application, a counterweight mechanism is provided on one side of one group of the placement mechanisms, and the counterweight mechanism includes two groups of counterweight rods and a counterweight box. One end of the two groups of counterweight rods is fixedly connected to the placement mechanism, and two groups of hinge blocks 2 are provided at the bottom of the counterweight box, and electromagnets are provided at the bottom of the two groups of hinge blocks 2.

[0012] By adopting the above technical solution and setting up a counterweight mechanism, when in use, the position of the counterweight box above the blade can be changed by the counterweight rod, the electromagnet set can adsorb the blade and can be firmly adsorbed and installed on the surface of the blade, and the hinge block 2 set can better fit the irregular surface of the blade, so that the blade can further maintain balance when hoisted in the air, ensuring the stability of the hoisting.

[0013] As a preferred technical solution of the present application, a plurality of groups of plug-in holes are provided inside the plug-in block, the plug-in rod is rotatably connected to the inside of the plug-in hole, the winding motor is provided on one side of the plug-in block, and one side of the plug-in rod is fixedly connected to the output end of the winding motor.

[0014] By adopting the above technical solution and setting a winding motor, the tightening belt can be wound up during use, which is convenient for workers to tighten and loosen the blades at high altitudes, and there is no need for workers to manually tighten the tightening belt when installing the blades, thereby improving practicality.

[0015] As a preferred technical solution of the present application, a camera system is arranged above the suspension frame, and the camera system includes multiple groups of cameras. The camera is arranged at one end of the crane, and a console is arranged on one side of the crane. A drone and a control panel are arranged inside the console.

[0016] By adopting the above technical solution and setting up a camera system, when in use, it is convenient for workers on the ground to accurately observe and control the lifting conditions of the blades above. The installed drone can observe the blades from multiple angles, thereby improving stability during use.

[0017] As a preferred technical solution of the present application, two groups of hinged blocks 1 are arranged below the abutment arm, the two groups of hinged blocks 1 are hinged to the abutment arm, and abutment blocks are arranged at the bottom of the hinged blocks 1.

[0018] By adopting the above technical solution and setting a hinge block, the fit with the blade surface can be further improved during use. The set resistance block can have a certain anti-slip effect and can also reduce damage to the blade surface.

[0019] As a preferred technical solution of the present application, the cable wind system includes a mounting frame and a mounting ring, a cable is installed on the outside of the mounting ring, and a ground anchor is provided at the bottom of the cable.

[0020] By adopting the above technical solution and setting up a cable wind system, it is possible to conveniently fix and adjust the posture and position of the suspension frame, thereby improving the wind resistance during the hoisting process and improving the stability of the hoisting.

[0021] As a preferred technical solution of the present application, a plurality of groups of mounting blocks are arranged inside the counterweight box, counterweight blocks are inserted into the interiors of the plurality of groups of mounting blocks, and the sizes of the mounting blocks match those of the counterweight blocks.

[0022] By adopting the above technical solution and setting up installation blocks, it is convenient for staff to flexibly adjust the weight of the counterweight box during use. Multiple installation blocks can fix the position of the internal counterweight block to prevent shaking during use.

[0023] A method for hoisting and constructing a single blade of an ultra-high wind turbine generator set, the method comprising the following steps: S1: Preparation before construction, check whether the number of marks on the bolts in the tower is consistent with the required tightening times. If they are consistent, it means that the torque of all bolts in the tower has reached the rated value. After the supervision organization has passed the acceptance, proceed to the next step of cabin installation.

[0024] S2: Ground assembly of the engine room: Assemble the auxiliary equipment of the engine room on the ground, including the assembly of the junction box on the top of the engine room, the maintenance platform, the cooling tower, the turning system, the main shaft flange installation, etc.

[0025] S3: Nacelle hoisting: According to the sling configuration plan, arrange the front and rear groups of slings on both sides of the main hoist hook as required. Note that the front lifting point sling is on the inside of the hook head.

[0026] S4: Hub installation. Install the hub top lifting device and lift the hub together with the transport bracket to the work site.

[0027] S5: Assembling a single blade hoist; before hoisting the blade, first assemble and install the blade-specific hoist, and assemble the suspension frame, mounting frame, placement mechanism, abutment and fixing mechanism, winding mechanism, pitch mechanism and counterweight mechanism of the special hoist; the blade-specific hoist is controlled through the control panel to perform centering adjustment when the blade is assembled at high altitude and aligned with the hub.

[0028] S6: Blade hoisting; plan the crane station position and site layout in advance, and determine the blade hoisting position in advance according to the site conditions and the direction of the crane; confirm the layout position of the cable wind system according to the on-site construction plan, and fix it as required.

[0029] S7: Clean the inside of the impeller; before leaving the hub, collect tools, clean the inside of the hub, confirm that the blade locking device is released, and change the blade pitch to the feathering state.

[0030] As a preferred technical solution of the present application, the abutment and fixing mechanism includes a telescopic rod and an abutment arm, a rotating shaft is arranged between the telescopic rod and the abutment arm, the winding mechanism includes a plug-in rod and a tightening belt, the plug-in rod is rotatably connected to the inside of the plug-in block, and a tightening belt is arranged between the two groups of the plug-in rods.

[0031] By adopting the above technical solution, Beneficial effects of this application: 1. By setting up a suspension frame, when in use, the abutting fixing mechanism and the winding mechanism arranged at the bottom of the placing mechanism on both sides can clamp the fan blades installed between the winding mechanism and the abutting fixing mechanism to prevent shaking during the hoisting process. The set drive box can drive the mounting frame to rotate to achieve the lateral angle change of the fan blades, so that the angle of the blades can be flipped during the hoisting process, simplifying the external adjustment process of the installation, and the hoisting wind speed can be increased from 8m / s to 10m / s, which greatly broadens the window period for fan hoisting, reduces the ground assembly time, extends the construction window period, and improves the installation efficiency. Compared with the single-blade hoisting method, the single-blade hoisting working platform is small, which reduces deforestation, reduces ecological damage, and reduces the impact of construction on the environment.

[0032] 2. By setting up an abutment fixing mechanism, when in use, the mutual hinge between the telescopic rod and the abutment arm can make the bottom of the abutment arm fit against the blade, and then the bottom of the blade is fixed by the tightening belt below, and then the telescopic rod can be used to move the abutment arm downward close to the blade, so as to facilitate the abutment and clamping of the irregular surface of the blade.

[0033] 3. By setting the pitch mechanism, the pitch angles of the two sets of placement mechanisms can be adjusted during use, which cooperates with the movement of the mounting frame to install the blades more flexibly and improve the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the suspension structure of this application; Figure 3 This is a schematic diagram of the internal structure of the suspension frame of this application; Figure 4 This is a schematic diagram of the placement mechanism structure of this application; Figure 5 This is a schematic diagram of the structure of the counterweight mechanism of this application; Figure 6 This is a schematic diagram of the console structure of this application.

[0035] In the figure: 1. crane; 101. boom; 102. hook; 2. suspension frame; 201. drive box; 202. fixed frame; 203. suspension hook; 205. rotating disk; 3. mounting frame; 301. fixed block; 302. rotating groove; 4. placing mechanism; 401. placing frame; 402. plug-in block; 403. plug-in hole; 5. abutting fixing mechanism; 501. telescopic rod; 502. abutting arm; 503. rotating shaft; 504. hinge block 1; 505. abutting block; 6. winding mechanism; 601. plug-in rod; 602. 02. Retracting belt; 603. Rewinding motor; 7. Pitch mechanism; 701. Pitch motor; 702. Fixing plate; 8. Counterweight mechanism; 801. Counterweight rod; 802. Counterweight box; 803. Articulated block 2; 804. Electromagnet; 805. Mounting block; 806. Counterweight block; 9. Camera system; 901. Camera; 10. Control console; 1001. UAV; 1002. Control panel; 11. Cable wind system; 1101. Mounting frame; 1102. Mounting ring; 1103. Cable; 1104. Ground anchor. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Reference Figure 1-6A method for hoisting a single blade of an ultra-high wind turbine generator system includes a crane 1, a boom 101 is installed above the crane 1, a hook 102 is installed at one end of the boom 101, a suspension frame 2 is arranged at the bottom of the hook 102, the hook 102 and the suspension frame 2 are connected by a cable, the suspension frame 2 includes a drive box 201 and a fixed frame 202, the drive box 201 is located above the fixed frame 202, multiple groups of suspension hooks 203 are installed on both sides of the fixed frame 202, and the output end of the drive box 201 passes through the fixed frame 202 and is equipped with a rotating disk 205 The bottom of the suspension frame 2 is provided with a mounting frame 3, a fixing block 301 is provided inside the mounting frame 3, a rotating groove 302 matching with the rotating disk 205 is provided above the fixing block 301, and a placing mechanism 4 is provided on both sides of the suspension frame 2, the placing mechanism 4 includes a placing frame 401 and a plug-in block 402, two groups of plug-in blocks 402 are provided at the bottom of the placing frame 401, abutting fixing mechanism 5 is provided at the bottom of the placing frame 401, a reeling mechanism 6 is provided inside the plug-in block 402, and a cable wind system 11 is provided on the outside of the suspension frame 2. The two sides of the mounting frame 3 are provided with a pitch mechanism 7, the pitch mechanism 7 includes a pitch motor 701 and a fixing plate 702, both sides of the fixing plate 702 are fixedly connected to the mounting frame 3, and the output end of the pitch motor 701 passes through the fixing plate 702 and is fixedly connected to the placing mechanism 4.

[0038] By setting the suspension frame 2, when in use, the abutting fixing mechanism 5 and the winding mechanism 6 set at the bottom of the placement mechanism 4 on both sides can clamp the fan blades installed between the winding mechanism 6 and the abutting fixing mechanism 5 to prevent shaking during the hoisting process. The set drive box 201 can drive the mounting frame 3 to rotate to achieve the lateral angle change of the fan blades, so that the angle of the blades can be flipped during the hoisting process, simplifying the external adjustment process of the installation, and the hoisting wind speed can be increased from 8m / s to 10m / s, which greatly broadens the window period for fan hoisting, reduces the ground assembly time, extends the construction window period, and improves the efficiency of installation. Compared with the single-blade hoisting method, the single-blade hoisting working platform is small, which reduces forest felling, reduces ecological damage, and reduces the impact of construction on the environment. By setting the pitch mechanism 7, when in use, the pitch angle adjustment of the two sets of placement mechanisms 4 can be achieved, and the movement of the mounting frame 3 cooperates with each other, so that the blades can be installed more flexibly and the installation efficiency can be improved.

[0039] Reference Figure 2The abutment fixing mechanism 5 includes a telescopic rod 501 and an abutment arm 502, a rotating shaft 503 is arranged between the telescopic rod 501 and the abutment arm 502, the winding mechanism 6 includes a plug rod 601 and a tightening belt 602, the plug rod 601 is rotatably connected to the inside of the plug block 402, and a tightening belt 602 is arranged between the two groups of plug rods 601; a counterweight mechanism 8 is arranged on one side of one group of the placing mechanism 4, and the counterweight mechanism 8 includes two groups of counterweight rods 801 and a counterweight box 802, one end of the two groups of counterweight rods 801 is connected to the placing mechanism 4, and the counterweight mechanism 8 includes two groups of counterweight rods 801 and a counterweight box 802. The mounting mechanism 4 is fixedly connected, two sets of hinge blocks 803 are arranged at the bottom of the counterweight box 802, and the bottoms of the two sets of hinge blocks 803 are both provided with electromagnets 804; a camera system 9 is arranged above the suspension frame 2, and the camera system 9 includes multiple sets of cameras 901, and a camera 901 is arranged at one end of the crane 1, and a console 10 is arranged on one side of the crane 1, and a drone 1001 and a control panel 1002 are arranged inside the console 10; by setting the abutment fixing mechanism 5, when in use, the telescopic rod 50 The mutual hinge between 1 and the abutment arm 502 can make the bottom of the abutment arm 502 fit with the blade, and then the bottom of the blade is fixed by the tightening belt 602 below, and then the abutment arm 502 can be moved downward to the blade by the telescopic rod 501, so as to facilitate the abutment and clamping of the irregular surface of the blade; by setting the counterweight mechanism 8, when in use, the position of the counterweight box 802 above the blade can be changed by the counterweight rod 801, the electromagnet 804 can adsorb the blade and can be firmly adsorbed and installed on the surface of the blade, and the hinge block 803 can be more in line with the irregular surface of the blade, so that the blade can further maintain balance when hoisted in the air, ensuring the stability of the hoisting; by setting the camera system 9, when in use, it can be convenient for the staff on the ground to accurately observe and control the hoisting situation of the upper blade, and the drone 1001 can observe the blade from all directions to improve the stability during use.

[0040] Reference Figure 2, a plurality of groups of plug holes 403 are provided inside the plug block 402, the plug rod 601 is rotatably connected to the inside of the plug hole 403, a winding motor 603 is provided on one side of the plug block 402, and one side of the plug rod 601 is fixedly connected to the output end of the winding motor 603; by providing the winding motor 603, the tightening belt 602 can be wound up when in use, which is convenient for the staff to tighten and relax the blades at high altitudes, and the staff does not need to manually tighten the tightening belt 602 when installing the blades, which improves Improve practicality; two sets of hinge blocks 504 are arranged below the abutment arm 502, and the two sets of hinge blocks 504 are hinged to each other between the abutment arm 502, and the bottom of the hinge block 504 is provided with a block 505; by providing the hinge block 504, the fit with the blade surface can be further improved during use, and the set block 505 can play a certain anti-slip effect and reduce the damage to the blade surface; the cable wind system 11 includes a mounting frame 1101 and a mounting ring 1102, and the mounting ring 1102 A cable 1103 is installed on the outside, and a ground anchor 1104 is set at the bottom of the cable 1103; by setting up the cable wind system 11, it is convenient to fix and adjust the posture and position of the suspension frame 2, improve the wind resistance during the hoisting process, and improve the stability of the hoisting; a plurality of groups of installation blocks 805 are arranged inside the counterweight box 802, and a counterweight block 806 is inserted inside the plurality of installation blocks 805, and the size of the installation block 805 matches the counterweight block 806; by setting up the installation block 805, when in use, It is convenient for the staff to flexibly adjust the weight of the counterweight box 802. Multiple installation blocks 805 can fix the position of the internal counterweight block 806 to prevent shaking during use; the abutment and fixing mechanism 5 includes a telescopic rod 501 and an abutment arm 502, and a rotating shaft 503 is arranged between the telescopic rod 501 and the abutment arm 502. The winding mechanism 6 includes a plug-in rod 601 and a tightening belt 602. The plug-in rod 601 is rotatably connected to the inside of the plug-in block 402, and a tightening belt 602 is arranged between the two groups of plug-in rods 601.

[0041] A method for hoisting and constructing a single blade of an ultra-high wind turbine generator set, the method comprising the following steps: S1: Preparation before construction, check whether the number of marks on the bolts in the tower is consistent with the required tightening times. If they are consistent, it means that the torque of all bolts in the tower has reached the rated value. After the supervision organization has passed the acceptance, proceed to the next step of cabin installation.

[0042] S2: Ground assembly of the engine room: Assemble the auxiliary equipment of the engine room on the ground, including the assembly of the junction box on the top of the engine room, the maintenance platform, the cooling tower, the turning system, the main shaft flange installation, etc.

[0043] S3: Nacelle hoisting: According to the sling configuration plan, arrange the front and rear groups of slings on both sides of the main hoist hook as required. Note that the front lifting point sling is on the inside of the hook head.

[0044] S4: Hub installation. Install the hub top lifting device and lift the hub together with the transport bracket to the work site.

[0045] S5: Assembling a single blade hoist; before hoisting the blade, first assemble and install the blade-specific hoist, and assemble the suspension frame 2, the mounting frame 3, the placement mechanism 4, the abutment and fixing mechanism 5, the winding mechanism 6, the pitch mechanism 7 and the counterweight mechanism 8 of the special hoist; the blade-specific hoist is controlled through the control panel 1002 to perform centering adjustment when the blade is assembled at high altitude and aligned with the hub.

[0046] S6: Blade hoisting; plan the crane station position and site layout in advance, and determine the blade hoisting position in advance according to the site conditions and the direction of the crane; confirm the layout position of the cable wind system 11 according to the on-site construction plan, and fix it as required.

[0047] S7: Clean the inside of the impeller; before leaving the hub, collect tools, clean the inside of the hub, confirm that the blade locking device is released, and change the blade pitch to the feathering state.

[0048] As a preferred technical solution of the present application, the abutment and fixing mechanism 5 includes a telescopic rod 501 and an abutment arm 502, a rotating shaft 503 is arranged between the telescopic rod 501 and the abutment arm 502, the winding mechanism 6 includes a plug-in rod 601 and a tightening belt 602, the plug-in rod 601 is rotatably connected to the inside of the plug-in block 402, and a tightening belt 602 is arranged between the two groups of plug-in rods 601.

[0049] Working principle: By setting up the suspension frame 2, when in use, the abutting fixing mechanism 5 and the winding mechanism 6 set at the bottom of the placing mechanism 4 on both sides can clamp the fan blades installed between the winding mechanism 6 and the abutting fixing mechanism 5 to prevent shaking during the hoisting process. The set drive box 201 can drive the mounting frame 3 to rotate to achieve the lateral angle change of the fan blades. In this way, the angle of the blades can be flipped during the hoisting process, simplifying the external adjustment process of the installation. The hoisting wind speed can be increased from 8m / s to 10m / s, which greatly broadens the window period for fan hoisting and reduces the ground splicing. The installation time is shortened, the construction window period is extended, and the installation efficiency is improved. Compared with the single-blade hoisting method, the single-blade hoisting working platform is small, which reduces the felling of trees, reduces ecological damage, and reduces the impact of construction on the environment. By setting the abutment fixing mechanism 5, when in use, the mutual hinge between the telescopic rod 501 and the abutment arm 502 can make the bottom of the abutment arm 502 fit with the blade, and then the bottom of the blade is fixed by the tightening belt 602 below, and then the telescopic rod 501 can be used to realize the downward movement of the abutment arm 502 close to the blade, so as to facilitate the abutment and clamping of the irregular surface of the blade; Among them, by setting the pitch mechanism 7, when in use, the pitch angle adjustment of the two sets of placement mechanisms 4 can be realized, and the movement of the mounting frame 3 is coordinated with each other, so that the blades can be installed more flexibly and the installation efficiency is improved. By setting the counterweight mechanism 8, when in use, the position of the counterweight box 802 above the blade can be changed by the counterweight rod 801, and the electromagnet 804 can adsorb the blade and can be firmly adsorbed and installed on the surface of the blade. The hinge block 803 can fit the irregular surface of the blade more closely, so that the blade can be further balanced when hoisted in the air, ensuring the stability of the hoisting. At the same time, by setting the winding motor 603, the tightening belt 602 can be rolled up when in use, which is convenient for the staff to tighten and loosen the blades at high altitudes, and the staff does not need to manually tighten the tightening belt 602 when installing the blades, thereby improving practicality; In addition, by setting up the camera system 9, when in use, it is convenient for the staff on the ground to accurately observe and control the hoisting situation of the upper blades. The set drone 1001 can observe the blades from all directions, thereby improving the stability during use; by setting up the hinge block 504, when in use, the fit to the blade surface can be further improved, and the set block 505 can have a certain anti-slip effect and reduce the damage to the blade surface; by setting up the cable wind system 11, it is convenient to fix and adjust the posture and position of the suspension frame 2, improve the wind resistance during the hoisting process, and improve the stability of the hoisting; by setting up the installation block 805, when in use, it is convenient for the staff to flexibly adjust the weight of the counterweight box 802, and multiple installation blocks 805 can fix the position of the internal counterweight block 806 to prevent shaking during use.

[0050] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for hoisting a single blade of an ultra-high wind turbine generator, comprising a crane (1), characterized in that: A boom (101) is installed above the crane (1), a hook (102) is installed at one end of the boom (101), a suspension frame (2) is arranged at the bottom of the hook (102), the hook (102) and the suspension frame (2) are connected via a cable, the suspension frame (2) comprises a drive box (201) and a fixed frame (202), the drive box (201) is located above the fixed frame (202), a plurality of groups of suspension hooks (203) are installed on both sides of the fixed frame (202), a rotating disk (205) is installed at the output end of the drive box (201) passing through the fixed frame (202), and a rotating disk (205) is installed at the bottom of the suspension frame (2). A mounting frame (3) is provided, a fixing block (301) is arranged inside the mounting frame (3), a rotating groove (302) matching the rotating disk (205) is opened above the fixing block (301), a placing mechanism (4) is installed on both sides of the suspension frame (2), the placing mechanism (4) comprises a placing frame (401) and a plug-in block (402), two groups of the plug-in blocks (402) are installed at the bottom of the placing frame (401), an abutting fixing mechanism (5) is arranged at the bottom of the placing frame (401), a winding mechanism (6) is installed inside the plug-in block (402), and a cable wind system (11) is installed on the outside of the suspension frame (2).

2. A method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 1, characterized in that: The abutment fixing mechanism (5) comprises a telescopic rod (501) and an abutment arm (502), a rotating shaft (503) is arranged between the telescopic rod (501) and the abutment arm (502), and the winding mechanism (6) comprises a plug rod (601) and a tightening belt (602), the plug rod (601) is rotatably connected to the inside of the plug block (402), and a tightening belt (602) is arranged between two groups of the plug rods (601).

3. The method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 1, characterized in that: A pitch mechanism (7) is provided on both sides of the mounting frame (3); the pitch mechanism (7) comprises a pitch motor (701) and a fixing plate (702); both sides of the fixing plate (702) are fixedly connected to the mounting frame (3); and an output end of the pitch motor (701) passes through the fixing plate (702) and is fixedly connected to the placement mechanism (4).

4. A method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 1, characterized in that: A counterweight mechanism (8) is provided on one side of one group of the placement mechanisms (4), the counterweight mechanism (8) comprising two groups of counterweight rods (801) and a counterweight box (802), one end of the two groups of counterweight rods (801) being fixedly connected to the placement mechanism (4), the bottom of the counterweight box (802) being provided with two groups of hinge blocks (803), the bottoms of the two groups of hinge blocks (803) being provided with electromagnets (804).

5. The method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 1, characterized in that: The plug block (402) has a plurality of groups of plug holes (403) formed inside, the plug rod (601) is rotatably connected to the inside of the plug hole (403), the winding motor (603) is provided on one side of the plug block (402), and one side of the plug rod (601) is fixedly connected to the output end of the winding motor (603).

6. The method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 1, characterized in that: A camera system (9) is arranged above the suspension frame (2), the camera system (9) comprising a plurality of camera groups (901), the camera (901) is arranged at one end of the crane (1), a control console (10) is arranged at one side of the crane (1), and a drone (1001) and a control panel (1002) are arranged inside the control console (10).

7. A method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 2, characterized in that: Two groups of hinged blocks (504) are arranged below the abutting arm (502), and the two groups of hinged blocks (504) are hinged to the abutting arm (502), and abutment blocks (505) are arranged at the bottom of the hinged blocks (504).

8. The method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 1, characterized in that: The cable wind system (11) comprises a mounting frame (1101) and a mounting ring (1102); a cable (1103) is mounted on the outside of the mounting ring (1102); and a ground anchor (1104) is provided at the bottom of the cable (1103).

9. A method for hoisting and installing a single blade of an ultra-high wind turbine according to claim 4, characterized in that: The counterweight box (802) is provided with a plurality of groups of mounting blocks (805) inside, and counterweight blocks (806) are inserted into the plurality of groups of mounting blocks (805), and the size of the mounting blocks (805) matches that of the counterweight blocks (806).

10. A method for hoisting and installing a single blade of an ultra-high wind turbine generator set, using the method for hoisting and installing a single blade of an ultra-high wind turbine generator set as described in any one of claims 1 to 8, wherein the process steps are as follows; S1: Preparation before construction, check whether the number of bolts marked in the tower is consistent with the required number of tightening times. If they are consistent, it means that the torque of all bolts in the tower has reached the rated value. After the supervision organization has passed the acceptance, the next step of cabin installation will be carried out; S2: Assembly on the ground of the engine room: Assemble the auxiliary equipment of the engine room on the ground, including the assembly of the junction box on the top of the engine room, the maintenance platform, the cooling tower, the turning system, the main shaft flange, etc.; S3: Nacelle hoisting: According to the sling configuration plan, arrange the front and rear slings on both sides of the main hoist hook as required. Note that the front sling is on the inside of the hook head; S4: Hub installation. Install the hub top hoist and hoist the hub together with the transport bracket to the work site; S5: assembling a single blade hoist; before hoisting the blade, firstly assemble and assemble the blade-specific hoist, assemble the suspension frame (2), the mounting frame (3), the placement mechanism (4), the abutment fixing mechanism (5), the winding mechanism (6), the pitch mechanism (7) and the counterweight mechanism (8) of the blade-specific hoist; the blade-specific hoist is controlled through the control panel (1002) to adjust the center of the blade when it is assembled at high altitude and aligned with the hub; S6: Blade hoisting; Plan the crane station location and site layout in advance, and determine the blade hoisting position in advance according to the site conditions and the direction of the crane. Confirm the layout of the cable wind system (11) according to the on-site construction plan and fix it as required. S7: Clean the inside of the impeller; before leaving the hub, collect tools, clean the inside of the hub, confirm that the blade locking device is released, and change the blade pitch to the feathering state.

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