A wind turbine hub and blade assembly aid

Abstract

The utility model discloses a kind of wind turbine hub and blade assembly auxiliary equipment, including hub and blade, the circumference of the hub is integrally formed with multiple variable pitch bearing flanges, one end of variable pitch bearing flange is equipped with multiple butt joint holes, one end of the blade is fixedly connected with multiple positioning rods, the one end of positioning rod is inserted with butt joint hole, the circumference outer wall of the blade is fixedly connected with multiple second positioning rings, the circumference outer wall of variable pitch bearing flange is fixedly connected with multiple first positioning rings, the circumference outer wall of the blade is sleeved with snap ring, the circumference outer wall of snap ring is fixedly connected with multiple winding machines, tensioned steel cable is wound on the reel of winding machine, another end of tensioned steel cable is fixed with clamping hook. The utility model is tightened simultaneously by multiple winding machines, to tensioned steel cable winding, to pull blade to variable pitch bearing flange movement, to facilitate positioning rod and butt joint hole butt joint, to facilitate blade and variable pitch bearing flange alignment, save time and effort.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine hub and blade assembly technology, and in particular to an auxiliary device for wind turbine hub and blade assembly. Background Technology

[0002] A wind turbine rotor mainly consists of three blades and a hub. The hub connects the blades and the main shaft, and its function is to withstand the thrust, torque, bending moment, and gyroscopic moment exerted by the wind on the blades, and then transmit the forces and moments of the rotor to the mechanism. During wind turbine hub installation, the hub and blades are assembled on the ground. Special clamps are used to clamp the hub, and the blades need to be supported by brackets to maintain a horizontal position. A crane uses slings to hook the tip of the remaining blade and then adjusts and assembles it.

[0003] Currently, the assembly of existing wind turbine hubs and blades is relatively complex, with poor alignment results, requiring repeated adjustments to achieve proper alignment. This process is time-consuming and labor-intensive. Therefore, in order to improve the assembly efficiency of wind turbine hubs and blades, and to promote technological advancement and enhance core technological competitiveness in the industry, this application proposes a new implementation scheme that differs from the auxiliary equipment and application methods used in the assembly of wind turbine hubs and blades in existing technologies. Utility Model Content

[0004] The purpose of this invention is to solve the problems of complex installation, poor alignment, and repeated adjustments required for proper alignment and installation of existing wind turbine hubs and blades, which are time-consuming and labor-intensive. Therefore, this invention proposes an auxiliary device for assembling wind turbine hubs and blades.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An auxiliary device for assembling a wind turbine hub and blades includes a retaining ring, multiple first positioning rings, and second positioning rings. The retaining ring is fixed to the outer circumference of the blade. Multiple winding machines are fixedly connected to the outer circumference of the retaining ring. A tension steel cable is wound on the spool of the winding machine. A hook is fixed to the other end of the tension steel cable. The tension steel cable passes through the first positioning ring, and the hook engages with the second positioning ring. A mounting base is fixedly connected to one side of the outer wall of the retaining ring. A PLC controller is fixedly connected to the mounting base. The PLC controller is connected to the winding machine via a wire.

[0007] Furthermore, the retaining ring is composed of two semi-circular structures, and a rotating shaft rotatably connects the two semi-circular structures.

[0008] Furthermore, a fastening bolt is inserted at one end between the two semi-circular retaining ring structures.

[0009] Furthermore, a protective cover is fixedly connected to the outer circumferential wall of the retaining ring, and the protective cover covers the outside of the winding machine.

[0010] Furthermore, a limiting ring is fixedly connected to the outer circumferential wall of the blade, and a retaining ring is located on one side of the limiting ring.

[0011] Furthermore, multiple second positioning rings are mounted on the circumferential outer wall of the blade.

[0012] Furthermore, multiple first positioning rings are fixedly installed on the outer circumferential wall of the pitch bearing flange.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By simultaneously tightening multiple winding machines, the tensioned steel cable is wound up, which in turn pulls the blades toward the pitch bearing flange, making it easier for the positioning rod to align with the docking hole, and thus easier to align the blades with the pitch bearing flange, saving time and effort.

[0015] 2. The use of a limiting ring and fastening bolts facilitates the limiting and fixing of the retaining ring, and the operation is simple, convenient and quick. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an auxiliary device for assembling a wind turbine hub and blades proposed in this utility model;

[0017] Figure 2 This is a rear view structural diagram of an auxiliary device for assembling a wind turbine hub and blades proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the open state structure of an auxiliary device for assembling a wind turbine hub and blades according to the present invention;

[0019] Figure 4 This is a cross-sectional structural diagram of an auxiliary device for assembling the hub and blades of a wind turbine proposed in this utility model.

[0020] In the diagram: 1. Hub; 2. Pitch bearing flange; 3. Blade; 4. Positioning rod; 5. First positioning ring; 6. Second positioning ring; 7. Snap ring; 8. Winding machine; 9. Tensioning cable; 10. Hook; 11. Rotating shaft; 12. Protective cover; 13. Fastening bolt; 14. Limit ring; 15. Mounting base; 16. PLC controller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 A type of auxiliary equipment for assembling wind turbine hubs and blades;

[0023] In the prior art, wind turbines include blades and hubs. When assembling the wind turbine hub and blades, multiple blades need to be installed on the hub. The auxiliary equipment in this solution is used to assist in installing the blades 3 onto the hub 1.

[0024] In the prior art, multiple pitch bearing flanges 2 are integrally formed on the circumference of the hub 1. Multiple mating holes are provided at one end of the pitch bearing flange 2. Multiple positioning rods 4 are welded to one end of the blade 3. One end of the positioning rod 4 is inserted into the mating hole.

[0025] This application seeks to protect: an auxiliary device for assembling wind turbine hubs and blades, including a retaining ring 7, multiple first positioning rings 5, and second positioning rings 6;

[0026] Multiple first positioning rings 5 ​​are welded to the outer circumference of the pitch bearing flange 2, multiple second positioning rings 6 are welded to the outer circumference of the blade 3, and a retaining ring 7 is fixed to the outer circumference of the blade 3.

[0027] Multiple winding machines 8 are fixed to the outer circumference of the retaining ring 7 by bolts. A tensioning steel cable 9 is wound on the winding machine 8. The other end of the tensioning steel cable 9 is fixed with a hook 10. The hook 10 is a ring eye hook with a built-in buckle. The tensioning steel cable 9 passes through the first positioning ring 5, and the hook 10 is engaged with the second positioning ring 6. One end of the tensioning steel cable 9 is passed through the first positioning ring 5, and then the hook 10 is engaged with the second positioning ring 6, which facilitates the subsequent pulling of the blade 3.

[0028] A mounting base 15 is fixed to one side of the outer wall of the retaining ring 7 by bolts. A PLC controller 16 is fixed to the mounting base 15 by bolts. The PLC controller 16 is model S7-1200. The PLC controller 16 is connected to the winding machine 8 by wires. Multiple winding machines 8 tighten at the same time, thereby winding the tensioned steel cable 9, which in turn pulls the blade 3 to move towards the pitch bearing flange 2, so as to facilitate the positioning rod 4 to align with the docking hole, and thus facilitate the auxiliary installation of the blade 3 and the pitch bearing flange 2.

[0029] The retaining ring 7 consists of two semi-circular structures, with a rotating shaft 11 rotatably connected between the two semi-circular structures. A fastening bolt 13 is inserted into one end between the two semi-circular structures, which facilitates fixing the retaining ring 7 to the blade 3.

[0030] The outer circumference of the retaining ring 7 is fixed with a protective cover 12 by bolts. The protective cover 12 covers the outside of the winding machine 8, thereby protecting the winding machine 8.

[0031] A limiting ring 14 is welded to the outer circumference of the blade 3, and a retaining ring 7 is located on one side of the limiting ring 14, which facilitates the installation of the retaining ring 7.

[0032] The working principle of this embodiment is as follows: In use, firstly, a special clamp is used to clamp the hub 1. Then, one end of the blade 3 is placed on the bracket. Next, the bracket holding the blade 3 is lifted by a crane, and the positioning rod 4 is aligned with the docking hole of the hub 1, leaving a certain space. Then, multiple winding machines 8 are started at the same time. The winding machines 8 unwind the tension cable 9. The operator passes one end of the tension cable 9 through the first positioning ring 5 and then locks the hook 10 on the second positioning ring 6 to complete the installation of the hook 10. Then, multiple winding machines 8 tighten at the same time, thereby winding the tension cable 9, which in turn pulls the blade 3 towards the pitch bearing flange 2, so that the positioning rod 4 can be docked with the docking hole. Then, the operator enters the nacelle of the hub 1, puts the nut on one end of the positioning rod 4 and tightens it, thereby fixing the blade 3 and the pitch bearing flange 2.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for assembling a wind turbine hub and blades, comprising a retaining ring (7), a plurality of first positioning rings (5), and second positioning rings (6), wherein the retaining ring (7) is fixed on the outer circumferential wall of the blade (3), characterized in that, Multiple winding machines (8) are fixedly connected to the outer circumference of the retaining ring (7). A tensioning steel cable (9) is wound on the reel of the winding machine (8). A hook (10) is fixed to the other end of the tensioning steel cable (9). The tensioning steel cable (9) passes through the first positioning ring (5). The hook (10) engages with the second positioning ring (6). A mounting base (15) is fixedly connected to one side of the outer wall of the retaining ring (7). A PLC controller (16) is fixedly connected to the mounting base (15). The PLC controller (16) is connected to the winding machine (8) through a wire.

2. The auxiliary equipment for assembling wind turbine hubs and blades according to claim 1, characterized in that, The retaining ring (7) is composed of two semi-arc structures, and a rotating shaft (11) is rotatably connected between the two semi-arc structures.

3. The auxiliary equipment for assembling wind turbine hubs and blades according to claim 2, characterized in that, A fastening bolt (13) is inserted at one end between the semi-circular structures of the two retaining rings (7).

4. The auxiliary equipment for assembling wind turbine hubs and blades according to claim 1, characterized in that, The outer circumferential wall of the retaining ring (7) is fixedly connected to a protective cover (12), which covers the outside of the winding machine (8).

5. The auxiliary equipment for assembling wind turbine hubs and blades according to claim 1, characterized in that, A limiting ring (14) is fixedly connected to the outer circumferential wall of the blade (3), and a retaining ring (7) is located on one side of the limiting ring (14).

6. The auxiliary equipment for assembling wind turbine hubs and blades according to claim 1, characterized in that, Multiple second positioning rings (6) are mounted on the outer circumferential wall of the blade (3).

7. The auxiliary equipment for assembling wind turbine hubs and blades according to claim 6, characterized in that, Multiple first positioning rings (5) are fixedly installed on the outer circumferential wall of the pitch bearing flange (2).

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