A wind turbine installation device

Abstract

This application belongs to the field of wind power equipment installation technology, and proposes a wind turbine installation device, including a hoisting system and a climbing mechanism. The hoisting system is installed on the upper surface of the climbing mechanism. Through the adaptive fitting design of the climbing mechanism with the outer surface of the tower, the installation device can autonomously climb and descend along the tower. The hoisting system includes a truss body. A secondary boom is hinged to the end of the main boom away from the boom flange, and a boom hook is installed at the end of the secondary boom away from the main boom. The boom hook is used for hoisting the tower, nacelle, and blades, thereby realizing the sequential assembly of the wind power equipment. The hoisting system is used to complete the hoisting and docking of tower segments, reducing the reliance on large lifting equipment, which is difficult to adapt to complex terrain operations. At the same time, it reduces installation costs and can be used for the daily maintenance of wind turbine units. It is particularly suitable for offshore wind power installation and large-capacity wind turbine installation scenarios.

Description

Technical Field

[0001] This application belongs to the field of wind power equipment installation technology, and specifically relates to a wind turbine installation device. Background Technology

[0002] With the increasing size and capacity of wind turbines, traditional crane lifting methods face severe challenges. For wind turbines of 5MW and above, with tower heights exceeding 100 meters and nacelle weights exceeding 150 tons, cranes with a lifting capacity of over 1,000 tons are required for installation. However, large cranes suffer from high equipment costs, difficulties in relocation, and significant limitations imposed by wind speeds. Especially in the offshore wind power sector, the short operating window for crane vessels further increases installation costs and risks.

[0003] Existing technologies offer various wind turbine installation solutions. Examples include the Davis Wind Lift System (DWLS) and crawler installation systems. However, these systems suffer from drawbacks such as poor adaptability (especially for offshore installations), the need for pre-installed rails, and the requirement for special modifications to the tower structure. While tower crane attachment installation avoids the use of large cranes, it involves significant equipment investment and cumbersome installation and dismantling. Although self-elevating wind turbine installation vessels provide a stable working platform, their large empty weight leads to high lifting energy consumption and requires specific water depths.

[0004] In summary, there is an urgent need for a new type of wind turbine installation device that can balance economy, adaptability, and installation efficiency to meet the installation requirements of large-capacity wind turbines on land and at sea. Summary of the Invention

[0005] To address the aforementioned issues, this application proposes a wind turbine installation device, comprising a hoisting system and a climbing mechanism, wherein the hoisting system is installed on the upper surface of the climbing mechanism; The hoisting system includes a truss body, on the upper surface of which a boom flange and a crane are mounted. The boom flange and the crane are symmetrically mounted about the axis of the climbing mechanism. A main boom is hinged to the upper surface of the boom flange. An auxiliary boom is hinged to the end of the main boom away from the boom flange, and a boom hook is mounted on the end of the auxiliary boom away from the main boom. The climbing mechanism includes two opposing mounted arm sliding rings, which are rotatably connected to the lower surface of the truss body; the outer surface of the arm sliding rings has a circumferential array of several slide rails, on which the arms are mounted; and a drive structure is installed between adjacent arms.

[0006] Furthermore, the truss body includes a first support, a second support, and a third support. The second support is fixedly installed on the side of the first support, and the boom flange is rotatably installed on the upper surface of the second support. The third support is fixedly installed on the upper surface of the first support, and the end of the third support away from the second support extends to the outside of the first support. The crane is slidably installed on the upper surface of the third support.

[0007] Furthermore, the lifting system also includes a main hydraulic rod, which is installed on the side of the main boom closer to the crane; one end of the main hydraulic rod is hinged to the boom flange, and the other end is hinged to the main boom.

[0008] Furthermore, the lifting system also includes an auxiliary hydraulic rod, which is installed on the side of the main boom away from the crane. One end of the auxiliary hydraulic rod is hinged to the main boom, and the other end is hinged to the auxiliary boom.

[0009] Furthermore, a winch is installed on the upper surface of the crane, and the winch is connected to the hook by ropes.

[0010] Furthermore, a first hydraulic rod is installed between adjacent clamping arms along the circumference of the slide ring; a second hydraulic rod is installed between adjacent clamping arms along the axial direction of the slide ring.

[0011] Furthermore, a rubber pad or positioning rod is installed on the side of the boom closest to the tower.

[0012] Furthermore, the installation device also includes a steering system, which is installed inside the truss body and is drive-connected to the boom flange and the climbing mechanism.

[0013] Furthermore, the steering system includes a boom steering motor, which is fixedly installed inside the second bracket and is connected to the boom flange via a drive connection.

[0014] Furthermore, the steering system also includes a main steering motor, which is installed inside the second bracket and located below the boom steering motor; the main steering motor is connected to the boom sliding ring drive.

[0015] Beneficial effects: 1. The wind turbine installation device of the present invention includes a hoisting system and a climbing mechanism. Through the adaptive fitting design of the climbing mechanism with the outer surface of the tower, the installation device can autonomously climb and descend along the tower. A boom flange and a crane are installed on the upper surface of the truss body. The main boom is hinged to the upper surface of the boom flange. An auxiliary boom is hinged to the end of the main boom away from the boom flange. A boom hook is installed at the end of the auxiliary boom away from the main boom. The boom hook is used for hoisting the tower, nacelle and blades, thereby realizing the sequential assembly of the wind power generation equipment. The hoisting system is used to complete the hoisting and docking of tower segments, reducing the dependence on large lifting equipment, which is difficult to adapt to complex terrain operations. At the same time, it reduces the installation cost and can be used for the daily maintenance of wind turbine units. It is particularly suitable for offshore wind power installation and large-capacity wind turbine installation scenarios.

[0016] 2. The wind turbine installation device of the present invention, by setting up a climbing mechanism, can adapt to towers with a diameter of 3-5 meters and can operate at wind speeds of 15 m / s, with wide adaptability; no additional crane is required, reducing equipment rental and transportation costs and improving installation efficiency; the present invention can also be used for routine maintenance and component replacement of wind turbines, improving equipment utilization.

[0017] 3. The climbing mechanism of the wind turbine installation device of the present invention includes two opposingly mounted arm sliding rings, which are rotatably connected to the lower surface of the truss body; the outer surface of the arm sliding rings has a plurality of slide rails arranged in a circular array, and the arms are mounted on the slide rails; a first hydraulic rod is installed between adjacent arms mounted on the same arm sliding ring; a second hydraulic rod is installed between the opposing arms of the two arm sliding rings; the first hydraulic rod retracts to drive the arms to move towards the tower, thereby clamping the tower and achieving fixation; the second hydraulic rod extends and retracts to realize the vertical movement of the upper and lower sets of arms, thereby realizing the upward or downward movement of the present invention along the tower.

[0018] 4. The wind turbine installation device of the present invention also includes a steering system, which is installed inside the truss body and is connected to the boom flange and the climbing mechanism in a transmission manner. By setting the steering system, the rotation of the hoisting system and the boom flange are realized, thereby facilitating the hoisting of wind turbine components in different directions.

[0019] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A three-dimensional structural schematic diagram of the wind turbine installation device in an embodiment of this application is shown.

[0022] Figure 2 A schematic diagram of the climbing mechanism of the wind turbine mounting device in an embodiment of this application is shown.

[0023] Figure 3 A top view schematic diagram of the climbing mechanism of the wind turbine mounting device in an embodiment of this application is shown.

[0024] Figure 4 A schematic diagram of the climbing mechanism of another embodiment of the wind turbine mounting device in this application is shown.

[0025] Figure 5 A partial structural schematic diagram of the climbing mechanism of the wind turbine installation device in an embodiment of this application is shown.

[0026] Figure 6 A schematic diagram of the operation of the wind turbine installation device in an embodiment of this application is shown.

[0027] Figure 7 A schematic diagram of the operation of the hoisting nacelle of the wind turbine installation device in an embodiment of this application is shown.

[0028] Explanation of reference numerals in the attached drawings: 100, hoisting system; 1, truss main body; 101, first support; 102, second support; 103, third support; 2, crane; 3, main boom; 4, auxiliary boom; 5, main hydraulic rod; 6, auxiliary hydraulic rod; 7, boom hook; 8, winch; 13, main flange; 15, boom flange; 200, climbing mechanism; 9, boom chute ring; 10, boom; 11, first hydraulic rod; 12, second hydraulic rod; 300, steering system; 14, main steering motor; 16, boom steering motor; 400, tower; 500, nacelle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Example 1 refer to Figure 1A wind turbine installation device includes a hoisting system 100. The hoisting system 100 uses a combination of a crane 2 and a boom to hoist the wind turbine. Specifically, the hoisting system 100 includes a truss body 1, a crane 2, a main boom 3, an auxiliary boom 4, a main hydraulic rod 5, an auxiliary hydraulic rod 6, a boom hook 7, and a winch 8. The truss body 1 adopts a detachable truss structure, including a first support 101. Construction work platforms (a second support 102 and a third support 103) are set on both sides of the first support 101 to facilitate construction work. Specifically, a circular window is set in the middle of the first support 101 for the tower 400 to pass through. A third support 103 is set on the upper surface of the first support 101, and a crane rail is set on the upper surface of the third support 103. The crane 2 moves along the crane rail. A winch 8 is set on the crane 2. By cooperating with the crane 2, the winch 8 can hoist small parts of the wind turbine to a designated height. Specifically, the small parts are hoisted to the designated position by the hook driven by the winch 8, and then the staff receive the parts.

[0031] refer to Figure 7 The tower 400, nacelle 500, or fan blades are hoisted to the designated positions using the main boom 3, auxiliary boom 4, and boom hook 7. Specifically, the tower 400 is hoisted above the already installed tower 400, and workers connect it with bolts; the nacelle 500 is hoisted above the top tower 400, and workers connect it with bolts; during the hoisting of the tower 400, nacelle 500, and fan blades, small components are hoisted using crane 2 to maintain the stability of the wind turbine installation device.

[0032] refer to Figure 1 A second bracket 102 is mounted on the side of the first bracket 101, and a boom flange 15 is mounted on the second bracket 102. The main boom 3 is fixed to the upper surface of the boom flange 15 by hinge. A main hydraulic rod 5 is hinged to the side of the main boom 3, and the other end of the main hydraulic rod 5 is hinged to the boom flange 15. The main hydraulic rod 5 can realize the lifting and lowering of the main boom 3 and provide power for the movement of the main boom 3.

[0033] Furthermore, the auxiliary boom 4 is fixed to the end of the main boom 3 away from the boom flange 15 by a hinge. The auxiliary boom 4 can be raised and lowered by the auxiliary hydraulic rod 6. The auxiliary hydraulic rod 6 is hinged to the main boom 3 and the auxiliary boom 4 respectively, providing power for the movement of the auxiliary boom 4.

[0034] Furthermore, a boom hook 7 is installed at the end of the auxiliary boom 4 away from the main boom 3, through which the tower 400, nacelle 500 and wind turbine blades can be hoisted.

[0035] refer to Figure 2The climbing mechanism 200 is composed of a ferrule ring 9, a ferrule 10, a first hydraulic rod 11, and a second hydraulic rod 12. The climbing mechanism 200 provides climbing power and maintains the stability of the mechanism. Specifically, the ferrule ring 9 is rotatably connected to the truss body 1, and the steering system 300 is used to provide power for the rotation of the hoisting system 100. The slide rail of the ferrule ring 9 mainly provides a track for the ferrule 10 to clamp and release the tower 400. Specifically, four slide rails are equidistantly arranged on the outer side of the ferrule ring 9, and a ferrule 10 is slidably installed on each slide rail. At least one first hydraulic rod 11 is installed between adjacent ferrules 10. The ferrules 10 are connected together by the first hydraulic rods 11 to form a clamping force, providing power for clamping and releasing the ferrules 10, thereby fixing the climbing mechanism 200 and the tower 400 together.

[0036] refer to Figure 4 Each climbing mechanism 200 includes two opposing clamping arm sliding rings 9. Each clamping arm sliding ring 9 has a clamping arm 10 mounted on its slide rail. A second hydraulic rod 12 is installed between the two opposing clamping arms 10, providing power for the lifting and lowering of the overall structure. Specifically, when the equipment needs to rise, initially, both sets of clamping arms 10 are tightly clamped to the outside of the tower 400. The first hydraulic rod 11 between the lower set of clamping arms 10 extends, causing the lower set of clamping arms 10 to release from the tower 400. Then, the second hydraulic rod 12 retracts, driving the lower set of clamping arms 10 and the first hydraulic rod 11 to move upwards. Then, the lower set of clamping arms... The first hydraulic rod 11 between the 10 retracts, thereby fixing the lower set of booms 10 to the outside of the tower 400; the first hydraulic rod 11 between the upper set of booms 10 extends, thereby releasing the upper set of booms 10 from the hoisting system 100; then the second hydraulic rod 12 extends, pushing the upper set of booms 10, the steering system 300, and the hoisting system 100 upward; then the first hydraulic rod 11 between the upper set of booms 10 retracts, thereby fixing the upper booms 10 to the hoisting system 100; then the steps of extending the first hydraulic rod 11 between the lower set of booms 10 are repeated until the equipment rises to the designated position.

[0037] When the equipment needs to be lowered, initially, both sets of clamping arms 10 are tightly clamped to the outside of the tower 400. The first hydraulic rod 11 between the upper set of clamping arms 10 extends, causing the upper set of clamping arms 10 to release from the tower 400. Then, the second hydraulic rod 12 retracts, causing the upper set of clamping arms 10 and the first hydraulic rod 11 to move downwards, thereby causing the steering system 300 and the hoisting system 100 to move downwards. Then, the first hydraulic rod 11 between the upper set of clamping arms 10 shortens, thus fixing the upper set of clamping arms 10 to the outside of the tower 400. Next, the first hydraulic rod 11 between the lower set of clamping arms 10 extends, causing the lower set of clamping arms 10 to release from the tower 400. The second hydraulic rod 12 extends, causing the lower set of clamping arms 10 to move downwards. The first hydraulic rod 11 between the lower set of clamping arms 10 retracts, thus fixing the lower set of clamping arms 10 to the tower 400. This process is repeated until the equipment is lowered to the designated position.

[0038] Furthermore, the present invention also includes a steering system 300, which includes a main steering motor 14 and a boom steering motor 16. The steering system 300 is located inside the second support 102. The steering system 300 enables the hoisting system 100 to steer in the XY plane with the Z-axis as the rotation center.

[0039] Specifically, the main flange 13 is fixedly installed on the lower surface of the truss body 1, and is rotatably connected to the boom sliding ring 9. The main steering motor 14 is fixed inside the truss body 1 and is drivenly connected to the boom sliding ring 9, providing power for the rotation of the hoisting system 100. The boom flange 15 is rotatably installed on the upper surface of the second support 102, and the boom steering motor 16 is fixedly installed inside the second support 102, and is drivenly connected to the boom flange 15, providing power for the rotation of the boom.

[0040] The tower 400, nacelle 500 and fan blade hoisting system 100 are located above the climbing mechanism 200. The hoisting system 100 can be rotated in the XY plane with the Z axis as the rotation center through the steering system 300, which facilitates the hoisting of the tower 400, nacelle 500 and fan blade.

[0041] Example 2 refer to Figure 6A wind turbine installation device includes a hoisting system 100 and a climbing mechanism 200. The hoisting system 100 is mounted on the upper surface of the climbing mechanism 200. Through the adaptive fit design between the climbing mechanism 200 and the outer surface of the tower 400, the installation device can autonomously climb and descend along the tower 400. The hoisting system 100 is used to complete the hoisting and docking of the tower 400. Its advantages include reducing reliance on large lifting equipment and lowering installation costs. This invention can be used for the routine maintenance of wind turbine units. It is particularly suitable for offshore wind power installation and large-capacity wind turbine installation scenarios.

[0042] Furthermore, the hoisting system 100 includes a truss body 1. A climbing mechanism 200 is installed on the lower surface of the truss body 1, and a boom flange 15 and a crane 2 are installed on the upper surface of the truss body 1. The boom flange 15 and the crane 2 are symmetrically installed about the axis of the climbing mechanism 200. By symmetrically installing the boom flange 15 and the crane 2, the force can be adjusted, thereby maintaining the balance of the equipment. A main boom 3 is hinged to the upper surface of the boom flange 15. An auxiliary boom 4 is hinged to the end of the main boom 3 away from the boom flange 15, and a boom hook 7 is installed at the end of the auxiliary boom 4 away from the main boom 3. Specifically, by sequentially hinged the boom flange 15, the main boom 3, and the auxiliary boom 4, the assembly of the boom is realized, which facilitates the hoisting of the tower 400, the nacelle 500, and the blades, thereby realizing the sequential assembly of the wind power generation equipment.

[0043] refer to Figure 2 The climbing mechanism 200 includes two opposingly mounted arm sliding rings 9, which are rotatably connected to the lower surface of the truss body 1. The outer surface of the arm sliding ring 9 has a circumferential array of several slide rails, on which arm 10s are mounted. A driving structure is installed between adjacent arm 10s. Specifically, a first hydraulic rod 11 (see reference) is installed between adjacent arm 10s mounted on the same arm sliding ring 9 (in the horizontal direction). Figure 3 A second hydraulic rod 12 is installed between the opposing clamping arms 10 (vertically). A first hydraulic rod 11 is installed horizontally between adjacent clamping arms 10, thereby enabling the first hydraulic rod 11 to retract and move the clamping arms 10 towards the tower 400, thus clamping the tower 400 and achieving fixation. The second hydraulic rod 12 is installed between the upper and lower clamping arms 10, enabling the upper and lower sets of clamping arms 10 to move up and down, thus allowing the invention to rise or fall along the tower 400.

[0044] Furthermore, a rubber pad or positioning rod is installed on the side of the boom 10 closest to the tower 400 (see reference). Figure 5 The friction between the rubber pad and the outer surface of the tower 400 is reduced, thereby improving the strength of the connection between the arm 10 and the tower 400.

[0045] refer to Figure 1 The truss body 1 includes a first support 101, a second support 102, and a third support 103. The lower surface of the first support 101 is rotatably connected to the boom sliding ring 9. The second support 102 is fixedly installed on the side of the first support 101, and the boom flange 15 is rotatably installed on the upper surface of the second support 102. The third support 103 is fixedly installed on the upper surface of the first support 101, with one end of the third support 103 away from the second support 102 extending to the outside of the first support 101. The crane 2 is slidably installed on the upper surface of the third support 103. By assembling the truss body 1 with the first support 101, the second support 102, and the third support 103, the boom flange 15 is installed on the upper surface of the second support 102, and the crane 2 and winch 8 are installed on the upper surface of the third support 103, thereby achieving balance when hoisting wind turbine components.

[0046] Furthermore, the lifting system 100 also includes a main hydraulic rod 5, which is installed on the side of the main boom 3 near the crane 2; one end of the main hydraulic rod 5 is hinged to the boom flange 15, and the other end is hinged to the main boom 3. The main hydraulic rod 5 drives the main boom 3 and the boom flange 15 to rotate, thereby adjusting the angle of the main boom 3 and the boom flange 15, facilitating the adjustment of the position of the boom hook 7 for lifting wind turbine components.

[0047] Furthermore, the lifting system 100 also includes an auxiliary hydraulic rod 6, which is installed on the side of the main boom 3 away from the crane 2. One end of the auxiliary hydraulic rod 6 is hinged to the main boom 3, and the other end is hinged to the auxiliary boom 4. By driving the auxiliary boom 4 to rotate relative to the main boom 3 through the auxiliary hydraulic rod 6, the angle of the auxiliary boom 4 and the boom hook 7 can be adjusted, facilitating the lifting of wind turbine components.

[0048] Specifically, a winch 8 is installed on the upper surface of crane 2, and the winch 8 is connected to the hook by a rope. By using the winch 8 to wind or unwind the rope, small components of the wind turbine can be hoisted.

[0049] refer to Figure 4 In another embodiment, a circular hole is provided on the outer surface of the tower 400. The positioning rod of the arm 10, which is located near the tower 400, cooperates with the circular hole, thereby improving the fixing strength between the arm 10 and the tower 400, and thus preventing the wind turbine components from sliding down the tower 400 when the invention is hoisting them.

[0050] refer to Figure 1The installation device also includes a steering system 300, which is installed inside the truss body 1 and is connected to both the boom flange 15 and the climbing mechanism 200. By setting up the steering system 300, the rotation of the hoisting system 100 and the boom flange 15 is achieved, facilitating the hoisting of wind turbine components in different directions. This invention, by incorporating the climbing mechanism 200, can accommodate towers 400 with diameters of 3-5 meters and can operate in wind speeds up to 15 m / s, demonstrating wide adaptability.

[0051] Furthermore, the steering system 300 includes a boom steering motor 16, which is fixedly installed inside the second bracket 102 and is connected to the boom flange 15 in a transmission manner. Specifically, the output end of the boom steering motor 16 is provided with a gear, which meshes with the teeth on the outer surface of the boom flange 15; the boom steering motor 16 drives the boom flange 15 to rotate, thereby driving the rotation of the main boom 3, the auxiliary boom 4, and the boom hook 7, facilitating lifting at different angles.

[0052] Furthermore, the steering system 300 also includes a main steering motor 14, which is installed inside the second bracket 102 and located below the boom steering motor 16. A main flange 13 is installed on the lower surface of the first bracket 101, and the main flange 13 is rotatably connected to the boom sliding ring 9. The main steering motor 14 is drive-connected to the boom sliding ring 9. Furthermore, the output shaft of the main steering motor 14 is connected to a synchronous pulley, and a synchronous pulley is provided on the outer surface of the boom sliding ring 9. The two synchronous pulleys are connected by a synchronous belt. The main steering motor 14 drives the synchronous belt, and since the boom sliding ring 9 is fixed to the outside of the tower 400, the main steering motor 14 drives the truss body 1 and thus the hoisting system 100 to rotate.

[0053] The installation method of this invention includes the following steps: S1, Ground Assembly: Install the first tower section 400 at the foundation location, then fix the installation device to the bottom of the first tower section 400, and complete the assembly of the nacelle 500 and the fan blades on the ground.

[0054] S2, Autonomous Climbing: The climbing mechanism 200 is activated, causing the device to climb segmentally along the installed tower 400 to the top. The control system maintains the truss body 1 horizontally to ensure stable climbing.

[0055] S3, the hoisting system 100 uses the boom hook 7 to hoist the tower 400 to be installed into the circular window inside the first support 101, and precisely connects it with the installed tower 400 through the positioning pin and tightens the bolts.

[0056] S4, Repeat climbing and hoisting: Cycle through steps S2 and S3 until all tower sections 400 are installed.

[0057] S5, Nacelle 500 Installation: After the tower 400 at the top is installed, the nacelle 500 is hoisted to the top of the tower 400 and fixed using the boom hook 7.

[0058] S6, Fan blade hoisting: The fan blades are hoisted to the designated position using a crane and then installed.

[0059] S7, Device Removal: The climbing mechanism 200 descends to the bottom of the tower 400, and the device is separated and lifted away from the site by opening the detachable frame.

[0060] This invention eliminates the need for additional cranes, reducing equipment rental and transportation costs. It is estimated that installation costs can be reduced by more than 30%, improving economic efficiency. This invention reduces maritime transportation and hoisting processes through an integrated operation mode, shortening the installation cycle by approximately 40%. This invention can also be used for routine wind turbine maintenance and component replacement, improving equipment utilization.

[0061] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A wind turbine generator installation device, characterized in that, It includes a hoisting system (100) and a climbing mechanism (200), wherein the hoisting system (100) is mounted on the upper surface of the climbing mechanism (200); The hoisting system (100) includes a truss body (1), on the upper surface of which a boom flange (15) and a crane (2) are mounted. The boom flange (15) and the crane (2) are symmetrical about the climbing mechanism (200). A main boom (3) is hinged to the upper surface of the boom flange (15). A secondary boom (4) is hinged to the end of the main boom (3) away from the boom flange (15). A boom hook (7) is mounted on the end of the secondary boom (4) away from the main boom (3). The climbing mechanism (200) includes two opposing mounted arm sliding rings (9), which are rotatably connected to the lower surface of the truss body (1); the outer surface of the arm sliding ring (9) has a plurality of slide rails arranged in a circular array, and the arm (10) is mounted on the slide rails; a drive structure is installed between adjacent arm (10).

2. The wind turbine generator installation device according to claim 1, characterized in that, The truss body (1) includes a first support (101), a second support (102) and a third support (103). The lower surface of the first support (101) is rotatably connected to the arm sliding groove ring (9). The second support (102) is fixedly installed on the side of the first support (101), and the boom flange (15) is rotatably installed on the upper surface of the second support (102). The third support (103) is fixedly installed on the upper surface of the first support (101), and one end of the third support (103) away from the second support (102) extends to the outside of the first support (101). The crane (2) is slidably installed on the upper surface of the third support (103).

3. The wind turbine generator installation device according to claim 1, characterized in that, The hoisting system (100) also includes a main hydraulic rod (5), which is installed on the side of the main boom (3) near the crane (2); one end of the main hydraulic rod (5) is hinged to the boom flange (15), and the other end is hinged to the main boom (3).

4. A wind turbine installation device according to claim 3, characterized in that, The hoisting system (100) also includes an auxiliary hydraulic rod (6), which is installed on the side of the main boom (3) away from the crane (2). One end of the auxiliary hydraulic rod (6) is hinged to the main boom (3), and the other end is hinged to the auxiliary boom (4).

5. A wind turbine installation device according to claim 1, characterized in that, A winch (8) is installed on the upper surface of the crane (2), and the winch (8) is connected to the hook (7) by a rope.

6. A wind turbine installation device according to claim 1, characterized in that, A first hydraulic rod (11) is installed between adjacent arms (10) along the circumferential direction of the sliding ring (9); a second hydraulic rod (12) is installed between adjacent arms (10) along the axial direction of the sliding ring (9).

7. A wind turbine installation device according to claim 6, characterized in that, The arm (10) is fitted with a rubber pad or positioning rod on the side near the tower (400).

8. A wind turbine installation device according to any one of claims 1-7, characterized in that, The installation device also includes a steering system (300) which is installed inside the truss body (1) and is connected to the boom flange (15) and the climbing mechanism (200).

9. A wind turbine installation device according to claim 8, characterized in that, The steering system (300) includes a boom steering motor (16), which is fixedly installed inside the second bracket (102) and is connected to the boom flange (15) in a transmission connection.

10. A wind turbine installation device according to claim 9, characterized in that, The steering system (300) also includes a main steering motor (14), which is installed inside the second bracket (102) and located below the boom steering motor (16); the main steering motor (14) is connected to the boom sliding ring (9) for transmission.

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